IE6/7 fix

svn changeset:9177/svn branch:6.2

1 files changed, 1703 insertions, 1703 deletions

diff --git a/src/com/vaadin/terminal/gwt/client/ApplicationConnection.java b/src/com/vaadin/terminal/gwt/client/ApplicationConnection.java
index 958b2a781e..969baa160f 100755
--- a/src/com/vaadin/terminal/gwt/client/ApplicationConnection.java
+++ b/src/com/vaadin/terminal/gwt/client/ApplicationConnection.java
@@ -44,1738 +44,1738 @@ import com.vaadin.terminal.gwt.client.ui.VNotification.HideEvent;
  * Entry point classes define <code>onModuleLoad()</code>.
  */
 public class ApplicationConnection {
-    private static final String MODIFIED_CLASSNAME = "v-modified";
+	private static final String MODIFIED_CLASSNAME = "v-modified";
 
-    private static final String REQUIRED_CLASSNAME_EXT = "-required";
+	private static final String REQUIRED_CLASSNAME_EXT = "-required";
 
-    private static final String ERROR_CLASSNAME_EXT = "-error";
+	private static final String ERROR_CLASSNAME_EXT = "-error";
 
-    public static final String VAR_RECORD_SEPARATOR = "\u001e";
+	public static final String VAR_RECORD_SEPARATOR = "\u001e";
 
-    public static final String VAR_FIELD_SEPARATOR = "\u001f";
+	public static final String VAR_FIELD_SEPARATOR = "\u001f";
 
-    public static final String VAR_BURST_SEPARATOR = "\u001d";
+	public static final String VAR_BURST_SEPARATOR = "\u001d";
 
-    public static final String VAR_ARRAYITEM_SEPARATOR = "\u001c";
+	public static final String VAR_ARRAYITEM_SEPARATOR = "\u001c";
 
-    public static final String UIDL_SECURITY_TOKEN_ID = "Vaadin-Security-Key";
-    /**
-     * @deprecated use UIDL_SECURITY_TOKEN_ID instead
-     */
-    @Deprecated
-    public static final String UIDL_SECURITY_HEADER = UIDL_SECURITY_TOKEN_ID;
+	public static final String UIDL_SECURITY_TOKEN_ID = "Vaadin-Security-Key";
+	/**
+	 * @deprecated use UIDL_SECURITY_TOKEN_ID instead
+	 */
+	@Deprecated
+	public static final String UIDL_SECURITY_HEADER = UIDL_SECURITY_TOKEN_ID;
 
-    public static final String PARAM_UNLOADBURST = "onunloadburst";
+	public static final String PARAM_UNLOADBURST = "onunloadburst";
 
-    public static final String ATTRIBUTE_DESCRIPTION = "description";
-    public static final String ATTRIBUTE_ERROR = "error";
+	public static final String ATTRIBUTE_DESCRIPTION = "description";
+	public static final String ATTRIBUTE_ERROR = "error";
 
-    private String uidl_security_key = "init";
+	private String uidl_security_key = "init";
 
-    private final HashMap<String, String> resourcesMap = new HashMap<String, String>();
+	private final HashMap<String, String> resourcesMap = new HashMap<String, String>();
 
-    private static Console console;
+	private static Console console;
 
-    private final ArrayList<String> pendingVariables = new ArrayList<String>();
+	private final ArrayList<String> pendingVariables = new ArrayList<String>();
 
-    private final ComponentDetailMap idToPaintableDetail = ComponentDetailMap
-            .create();
+	private final ComponentDetailMap idToPaintableDetail = ComponentDetailMap
+			.create();
 
-    private final WidgetSet widgetSet;
+	private final WidgetSet widgetSet;
 
-    private VContextMenu contextMenu = null;
+	private VContextMenu contextMenu = null;
 
-    private Timer loadTimer;
-    private Timer loadTimer2;
-    private Timer loadTimer3;
-    private Element loadElement;
+	private Timer loadTimer;
+	private Timer loadTimer2;
+	private Timer loadTimer3;
+	private Element loadElement;
 
-    private final VView view;
+	private final VView view;
 
-    private boolean applicationRunning = false;
+	private boolean applicationRunning = false;
 
-    private int activeRequests = 0;
+	private int activeRequests = 0;
 
-    /** Parameters for this application connection loaded from the web-page */
-    private final ApplicationConfiguration configuration;
+	/** Parameters for this application connection loaded from the web-page */
+	private final ApplicationConfiguration configuration;
 
-    /** List of pending variable change bursts that must be submitted in order */
-    private final ArrayList<ArrayList<String>> pendingVariableBursts = new ArrayList<ArrayList<String>>();
+	/** List of pending variable change bursts that must be submitted in order */
+	private final ArrayList<ArrayList<String>> pendingVariableBursts = new ArrayList<ArrayList<String>>();
 
-    /** Timer for automatic refirect to SessionExpiredURL */
-    private Timer redirectTimer;
+	/** Timer for automatic refirect to SessionExpiredURL */
+	private Timer redirectTimer;
 
-    /** redirectTimer scheduling interval in seconds */
-    private int sessionExpirationInterval;
+	/** redirectTimer scheduling interval in seconds */
+	private int sessionExpirationInterval;
 
-    private ArrayList<Paintable> relativeSizeChanges = new ArrayList<Paintable>();;
-    private ArrayList<Paintable> componentCaptionSizeChanges = new ArrayList<Paintable>();;
+	private ArrayList<Paintable> relativeSizeChanges = new ArrayList<Paintable>();;
+	private ArrayList<Paintable> componentCaptionSizeChanges = new ArrayList<Paintable>();;
 
-    private Date requestStartTime;
+	private Date requestStartTime;
 
-    private boolean validatingLayouts = false;
+	private boolean validatingLayouts = false;
 
-    private Set<Paintable> zeroWidthComponents = null;
+	private Set<Paintable> zeroWidthComponents = null;
 
-    private Set<Paintable> zeroHeightComponents = null;
+	private Set<Paintable> zeroHeightComponents = null;
 
-    public ApplicationConnection(WidgetSet widgetSet,
-            ApplicationConfiguration cnf) {
-        this.widgetSet = widgetSet;
-        configuration = cnf;
-        windowName = configuration.getInitialWindowName();
-        if (isDebugMode()) {
-            console = new VDebugConsole(this, cnf, !isQuietDebugMode());
-        } else {
-            console = new NullConsole();
-        }
-
-        ComponentLocator componentLocator = new ComponentLocator(this);
-
-        String appRootPanelName = cnf.getRootPanelId();
-        // remove the end (window name) of autogenerated rootpanel id
-        appRootPanelName = appRootPanelName.replaceFirst("-\\d+$", "");
-
-        initializeTestbenchHooks(componentLocator, appRootPanelName);
-
-        initializeClientHooks();
-
-        view = new VView(cnf.getRootPanelId());
-        showLoadingIndicator();
-
-    }
-
-    /**
-     * Starts this application. Don't call this method directly - it's called by
-     * {@link ApplicationConfiguration#startNextApplication()}, which should be
-     * called once this application has started (first response received) or
-     * failed to start. This ensures that the applications are started in order,
-     * to avoid session-id problems.
-     */
-    void start() {
-        makeUidlRequest("", true, false, false);
-    }
-
-    private native void initializeTestbenchHooks(
-            ComponentLocator componentLocator, String TTAppId)
-    /*-{
-        var ap = this;
-        var client = {};
-        client.isActive = function() {
-            return ap.@com.vaadin.terminal.gwt.client.ApplicationConnection::hasActiveRequest()() || ap.@com.vaadin.terminal.gwt.client.ApplicationConnection::isLoadingIndicatorVisible()();
-        }
-        var vi = ap.@com.vaadin.terminal.gwt.client.ApplicationConnection::getVersionInfo()();
-        if (vi) {
-            client.getVersionInfo = function() {
-                return vi;
-            }
-        }
-
-        client.getElementByPath = function(id) {
-           return componentLocator.@com.vaadin.terminal.gwt.client.ComponentLocator::getElementByPath(Ljava/lang/String;)(id);
-        }
-        client.getPathForElement = function(element) {
-           return componentLocator.@com.vaadin.terminal.gwt.client.ComponentLocator::getPathForElement(Lcom/google/gwt/user/client/Element;)(element);
-        }
-
-        if(!$wnd.vaadin.clients) {
-           $wnd.vaadin.clients = {};
-        }
-
-        $wnd.vaadin.clients[TTAppId] = client;
-    }-*/;
-
-    /**
-     * Helper for tt initialization
-     */
-    @SuppressWarnings("unused")
-    private JavaScriptObject getVersionInfo() {
-        return configuration.getVersionInfoJSObject();
-    }
-
-    /**
-     * Publishes a JavaScript API for mash-up applications.
-     * <ul>
-     * <li><code>vaadin.forceSync()</code> sends pending variable changes, in
-     * effect synchronizing the server and client state. This is done for all
-     * applications on host page.</li>
-     * <li><code>vaadin.postRequestHooks</code> is a map of functions which gets
-     * called after each XHR made by vaadin application. Note, that it is
-     * attaching js functions responsibility to create the variable like this:
-     * 
-     * <code><pre>
-     * if(!vaadin.postRequestHooks) {vaadin.postRequestHooks = new Object();}
-     * postRequestHooks.myHook = function(appId) {
-     *          if(appId == "MyAppOfInterest") {
-     *                  // do the staff you need on xhr activity
-     *          }
-     * }
-     * </pre></code> First parameter passed to these functions is the identifier
-     * of Vaadin application that made the request.
-     * </ul>
-     * 
-     * TODO make this multi-app aware
-     */
-    private native void initializeClientHooks()
-    /*-{
-        var app = this;
-        var oldSync;
-        if($wnd.vaadin.forceSync) {
-            oldSync = $wnd.vaadin.forceSync;
-        }
-        $wnd.vaadin.forceSync = function() {
-            if(oldSync) {
-                oldSync();
-            }
-            app.@com.vaadin.terminal.gwt.client.ApplicationConnection::sendPendingVariableChanges()();
-        }
-        var oldForceLayout;
-        if($wnd.vaadin.forceLayout) {
-            oldForceLayout = $wnd.vaadin.forceLayout;
-        }
-        $wnd.vaadin.forceLayout = function() {
-            if(oldForceLayout) {
-                oldForceLayout();
-            }
-            app.@com.vaadin.terminal.gwt.client.ApplicationConnection::forceLayout()();
-        }
-    }-*/;
-
-    /**
-     * Runs possibly registered client side post request hooks. This is expected
-     * to be run after each uidl request made by Vaadin application.
-     * 
-     * @param appId
-     */
-    private static native void runPostRequestHooks(String appId)
-    /*-{
-        if($wnd.vaadin.postRequestHooks) {
-            for(var hook in $wnd.vaadin.postRequestHooks) {
-                if(typeof($wnd.vaadin.postRequestHooks[hook]) == "function") {
-                    try {
-                        $wnd.vaadin.postRequestHooks[hook](appId);
-                    } catch(e) {}
-                }
-            }
-        }
-    }-*/;
-
-    public static Console getConsole() {
-        return console;
-    }
-
-    /**
-     * Checks if client side is in debug mode. Practically this is invoked by
-     * adding ?debug parameter to URI.
-     * 
-     * @return true if client side is currently been debugged
-     */
-    public native static boolean isDebugMode()
-    /*-{
-        if($wnd.vaadin.debug) {
-            var parameters = $wnd.location.search;
-            var re = /debug[^\/]*$/;
-            return re.test(parameters);
-        } else {
-            return false;
-        }
-    }-*/;
-
-    private native static boolean isQuietDebugMode()
-    /*-{
-        var uri = $wnd.location;
-        var re = /debug=q[^\/]*$/;
-        return re.test(uri);
-    }-*/;
-
-    public String getAppUri() {
-        return configuration.getApplicationUri();
-    };
-
-    public boolean hasActiveRequest() {
-        return (activeRequests > 0);
-    }
-
-    private void makeUidlRequest(final String requestData,
-            final boolean repaintAll, final boolean forceSync,
-            final boolean analyzeLayouts) {
-        startRequest();
-
-        // Security: double cookie submission pattern
-        final String rd = uidl_security_key + VAR_BURST_SEPARATOR + requestData;
-
-        console.log("Making UIDL Request with params: " + rd);
-        String uri = getAppUri() + "UIDL" + configuration.getPathInfo();
-        if (repaintAll) {
-            // collect some client side data that will be sent to server on
-            // initial uidl request
-            int clientHeight = Window.getClientHeight();
-            int clientWidth = Window.getClientWidth();
-            com.google.gwt.dom.client.Element pe = view.getElement()
-                    .getParentElement();
-            int offsetHeight = pe.getOffsetHeight();
-            int offsetWidth = pe.getOffsetWidth();
-            int screenWidth = BrowserInfo.get().getScreenWidth();
-            int screenHeight = BrowserInfo.get().getScreenHeight();
-
-            String token = History.getToken();
-
-            // TODO figure out how client and view size could be used better on
-            // server. screen size can be accessed via Browser object, but other
-            // values currently only via transaction listener.
-            uri += "?repaintAll=1&" + "sh=" + screenHeight + "&sw="
-                    + screenWidth + "&cw=" + clientWidth + "&ch="
-                    + clientHeight + "&vw=" + offsetWidth + "&vh="
-                    + offsetHeight + "&fr=" + token;
-            if (analyzeLayouts) {
-                uri += "&analyzeLayouts=1";
-            }
-        }
-        if (windowName != null && windowName.length() > 0) {
-            uri += (repaintAll ? "&" : "?") + "windowName=" + windowName;
-        }
-
-        if (!forceSync) {
-            boolean success = false;
-            final RequestBuilder rb = new RequestBuilder(RequestBuilder.POST,
-                    uri);
-            // TODO enable timeout
-            // rb.setTimeoutMillis(timeoutMillis);
-            rb.setHeader("Content-Type", "text/plain;charset=utf-8");
-            try {
-                rb.sendRequest(rd, new RequestCallback() {
-                    public void onError(Request request, Throwable exception) {
-                        showCommunicationError(exception.getMessage());
-                        endRequest();
-                        if (!applicationRunning) {
-                            // start failed, let's try to start the next app
-                            ApplicationConfiguration.startNextApplication();
-                        }
-                    }
-
-                    public void onResponseReceived(Request request,
-                            Response response) {
-                        console.log("Server visit took "
-                                + String.valueOf((new Date()).getTime()
-                                        - requestStartTime.getTime()) + "ms");
-
-                        switch (response.getStatusCode()) {
-                        case 0:
-                            showCommunicationError("Invalid status code 0 (server down?)");
-                            return;
-                            // TODO could add more cases
-                        case 503:
-                            // We'll assume msec instead of the usual seconds
-                            int delay = Integer.parseInt(response
-                                    .getHeader("Retry-After"));
-                            console.log("503, retrying in " + delay + "msec");
-                            (new Timer() {
-                                @Override
-                                public void run() {
-                                    activeRequests--;
-                                    makeUidlRequest(requestData, repaintAll,
-                                            forceSync, analyzeLayouts);
-                                }
-                            }).schedule(delay);
-                            return;
-
-                        }
-
-                        if (applicationRunning) {
-                            handleReceivedJSONMessage(response);
-                        } else {
-                            applicationRunning = true;
-                            handleWhenCSSLoaded(response);
-                            ApplicationConfiguration.startNextApplication();
-                        }
-                    }
-
-                    int cssWaits = 0;
-                    static final int MAX_CSS_WAITS = 20;
-
-                    private void handleWhenCSSLoaded(final Response response) {
-                        int heightOfLoadElement = DOM.getElementPropertyInt(
-                                loadElement, "offsetHeight");
-                        if (heightOfLoadElement == 0
-                                && cssWaits < MAX_CSS_WAITS) {
-                            (new Timer() {
-                                @Override
-                                public void run() {
-                                    handleWhenCSSLoaded(response);
-                                }
-                            }).schedule(50);
-                            console
-                                    .log("Assuming CSS loading is not complete, "
-                                            + "postponing render phase. "
-                                            + "(.v-loading-indicator height == 0)");
-                            cssWaits++;
-                        } else {
-                            handleReceivedJSONMessage(response);
-                            if (cssWaits >= MAX_CSS_WAITS) {
-                                console
-                                        .error("CSS files may have not loaded properly.");
-                            }
-                        }
-                    }
-
-                });
-
-            } catch (final RequestException e) {
-                ClientExceptionHandler.displayError(e);
-                endRequest();
-            }
-        } else {
-            // Synchronized call, discarded response
-
-            syncSendForce(((HTTPRequestImpl) GWT.create(HTTPRequestImpl.class))
-                    .createXmlHTTPRequest(), uri + "&" + PARAM_UNLOADBURST
-                    + "=1", rd);
-        }
-    }
-
-    /**
-     * Shows the communication error notification. The 'details' only go to the
-     * console for now.
-     * 
-     * @param details
-     *            Optional details for debugging.
-     */
-    private void showCommunicationError(String details) {
-        console.error("Communication error: " + details);
-        String html = "";
-        if (configuration.getCommunicationErrorCaption() != null) {
-            html += "<h1>" + configuration.getCommunicationErrorCaption()
-                    + "</h1>";
-        }
-        if (configuration.getCommunicationErrorMessage() != null) {
-            html += "<p>" + configuration.getCommunicationErrorMessage()
-                    + "</p>";
-        }
-        if (html.length() > 0) {
-            VNotification n = new VNotification(1000 * 60 * 45);
-            n.addEventListener(new NotificationRedirect(configuration
-                    .getCommunicationErrorUrl()));
-            n
-                    .show(html, VNotification.CENTERED_TOP,
-                            VNotification.STYLE_SYSTEM);
-        } else {
-            redirect(configuration.getCommunicationErrorUrl());
-        }
-    }
-
-    private native void syncSendForce(JavaScriptObject xmlHttpRequest,
-            String uri, String requestData)
-    /*-{
-        try {
-            xmlHttpRequest.open("POST", uri, false);
-            xmlHttpRequest.setRequestHeader("Content-Type", "text/plain;charset=utf-8");
-            xmlHttpRequest.send(requestData);
-        } catch (e) {
-           // No errors are managed as this is synchronous forceful send that can just fail
-        }
-        this.@com.vaadin.terminal.gwt.client.ApplicationConnection::endRequest()();
-    }-*/;
-
-    private void startRequest() {
-        activeRequests++;
-        requestStartTime = new Date();
-        // show initial throbber
-        if (loadTimer == null) {
-            loadTimer = new Timer() {
-                @Override
-                public void run() {
-                    /*
-                     * IE7 does not properly cancel the event with
-                     * loadTimer.cancel() so we have to check that we really
-                     * should make it visible
-                     */
-                    if (loadTimer != null) {
-                        showLoadingIndicator();
-                    }
-
-                }
-            };
-            // First one kicks in at 300ms
-        }
-        loadTimer.schedule(300);
-    }
-
-    private void endRequest() {
-        if (applicationRunning) {
-            checkForPendingVariableBursts();
-            runPostRequestHooks(configuration.getRootPanelId());
-        }
-        activeRequests--;
-        // deferring to avoid flickering
-        DeferredCommand.addCommand(new Command() {
-            public void execute() {
-                if (activeRequests == 0) {
-                    hideLoadingIndicator();
-                }
-            }
-        });
-    }
-
-    /**
-     * This method is called after applying uidl change set to application.
-     * 
-     * It will clean current and queued variable change sets. And send next
-     * change set if it exists.
-     */
-    private void checkForPendingVariableBursts() {
-        cleanVariableBurst(pendingVariables);
-        if (pendingVariableBursts.size() > 0) {
-            for (Iterator<ArrayList<String>> iterator = pendingVariableBursts
-                    .iterator(); iterator.hasNext();) {
-                cleanVariableBurst(iterator.next());
-            }
-            ArrayList<String> nextBurst = pendingVariableBursts.get(0);
-            pendingVariableBursts.remove(0);
-            buildAndSendVariableBurst(nextBurst, false);
-        }
-    }
-
-    /**
-     * Cleans given queue of variable changes of such changes that came from
-     * components that do not exist anymore.
-     * 
-     * @param variableBurst
-     */
-    private void cleanVariableBurst(ArrayList<String> variableBurst) {
-        for (int i = 1; i < variableBurst.size(); i += 2) {
-            String id = variableBurst.get(i);
-            id = id.substring(0, id.indexOf(VAR_FIELD_SEPARATOR));
-            if (!idToPaintableDetail.containsKey(id)) {
-                // variable owner does not exist anymore
-                variableBurst.remove(i - 1);
-                variableBurst.remove(i - 1);
-                i -= 2;
-                ApplicationConnection.getConsole().log(
-                        "Removed variable from removed component: " + id);
-            }
-        }
-    }
-
-    private void showLoadingIndicator() {
-        // show initial throbber
-        if (loadElement == null) {
-            loadElement = DOM.createDiv();
-            DOM.setStyleAttribute(loadElement, "position", "absolute");
-            DOM.appendChild(view.getElement(), loadElement);
-            ApplicationConnection.getConsole().log("inserting load indicator");
-        }
-        DOM.setElementProperty(loadElement, "className", "v-loading-indicator");
-        DOM.setStyleAttribute(loadElement, "display", "block");
-        // Initialize other timers
-        loadTimer2 = new Timer() {
-            @Override
-            public void run() {
-                DOM.setElementProperty(loadElement, "className",
-                        "v-loading-indicator-delay");
-            }
-        };
-        // Second one kicks in at 1500ms from request start
-        loadTimer2.schedule(1200);
-
-        loadTimer3 = new Timer() {
-            @Override
-            public void run() {
-                DOM.setElementProperty(loadElement, "className",
-                        "v-loading-indicator-wait");
-            }
-        };
-        // Third one kicks in at 5000ms from request start
-        loadTimer3.schedule(4700);
-    }
-
-    private void hideLoadingIndicator() {
-        if (loadTimer != null) {
-            loadTimer.cancel();
-            if (loadTimer2 != null) {
-                loadTimer2.cancel();
-                loadTimer3.cancel();
-            }
-            loadTimer = null;
-        }
-        if (loadElement != null) {
-            DOM.setStyleAttribute(loadElement, "display", "none");
-        }
-    }
-
-    public boolean isLoadingIndicatorVisible() {
-        if (loadElement == null) {
-            return false;
-        }
-        if (loadElement.getStyle().getProperty("display").equals("none")) {
-            return false;
-        }
-
-        return true;
-    }
-
-    private static native ValueMap parseJSONResponse(String jsonText)
-    /*-{
-        if(JSON && JSON.parse) {
-            return JSON.parse(jsonText);
-        } else {
-            return eval('(' + jsonText + ')');
-        }
-    }-*/;
-
-    private void handleReceivedJSONMessage(Response response) {
-        final Date start = new Date();
-        String jsonText = response.getText();
-        // for(;;);[realjson]
-        jsonText = jsonText.substring(9, jsonText.length() - 1);
-        ValueMap json;
-        try {
-            json = parseJSONResponse(jsonText);
-        } catch (final Exception e) {
-            endRequest();
-            showCommunicationError(e.getMessage() + " - Original JSON-text:");
-            console.log(jsonText);
-            return;
-        }
-
-        ApplicationConnection.getConsole()
-                .log(
-                        "JSON parsing took "
-                                + (new Date().getTime() - start.getTime()));
-        // Handle redirect
-        if (json.containsKey("redirect")) {
-            String url = json.getValueMap("redirect").getString("url");
-            console.log("redirecting to " + url);
-            redirect(url);
-            return;
-        }
-
-        // Get security key
-        if (json.containsKey(UIDL_SECURITY_TOKEN_ID)) {
-            uidl_security_key = json.getString(UIDL_SECURITY_TOKEN_ID);
-        }
-
-        if (json.containsKey("resources")) {
-            ValueMap resources = json.getValueMap("resources");
-            JsArrayString keyArray = resources.getKeyArray();
-            int l = keyArray.length();
-            for (int i = 0; i < l; i++) {
-                String key = keyArray.get(i);
-                resourcesMap.put(key, resources.getAsString(key));
-            }
-        }
-
-        if (json.containsKey("typeMappings")) {
-            configuration.addComponentMappings(
-                    json.getValueMap("typeMappings"), widgetSet);
-        }
-
-        if (json.containsKey("locales")) {
-            // Store locale data
-            JsArray<ValueMap> valueMapArray = json
-                    .getJSValueMapArray("locales");
-            LocaleService.addLocales(valueMapArray);
-        }
-
-        ValueMap meta = null;
-        if (json.containsKey("meta")) {
-            meta = json.getValueMap("meta");
-            if (meta.containsKey("repaintAll")) {
-                view.clear();
-                idToPaintableDetail.clear();
-                if (meta.containsKey("invalidLayouts")) {
-                    validatingLayouts = true;
-                    zeroWidthComponents = new HashSet<Paintable>();
-                    zeroHeightComponents = new HashSet<Paintable>();
-                }
-            }
-            if (meta.containsKey("timedRedirect")) {
-                final ValueMap timedRedirect = meta
-                        .getValueMap("timedRedirect");
-                redirectTimer = new Timer() {
-                    @Override
-                    public void run() {
-                        redirect(timedRedirect.getString("url"));
-                    }
-                };
-                sessionExpirationInterval = timedRedirect.getInt("interval");
-            }
-        }
-
-        if (redirectTimer != null) {
-            redirectTimer.schedule(1000 * sessionExpirationInterval);
-        }
-
-        // Process changes
-        JsArray<ValueMap> changes = json.getJSValueMapArray("changes");
-
-        ArrayList<Paintable> updatedWidgets = new ArrayList<Paintable>();
-        relativeSizeChanges.clear();
-        componentCaptionSizeChanges.clear();
-
-        int length = changes.length();
-        for (int i = 0; i < length; i++) {
-            try {
-                final UIDL change = changes.get(i).cast();
-                try {
-                    console.dirUIDL(change);
-                } catch (final Exception e) {
-                    ClientExceptionHandler.displayError(e);
-                    // TODO: dir doesn't work in any browser although it should
-                    // work (works in hosted mode)
-                    // it partially did at some part but now broken.
-                }
-                final UIDL uidl = change.getChildUIDL(0);
-                // TODO optimize
-                final Paintable paintable = getPaintable(uidl.getId());
-                if (paintable != null) {
-                    paintable.updateFromUIDL(uidl, this);
-                    // paintable may have changed during render to another
-                    // implementation, use the new one for updated widgets map
-                    updatedWidgets.add(idToPaintableDetail.get(uidl.getId())
-                            .getComponent());
-                } else {
-                    if (!uidl.getTag().equals("0")) {
-                        ClientExceptionHandler
-                                .displayError("Received update for "
-                                        + uidl.getTag()
-                                        + ", but there is no such paintable ("
-                                        + uidl.getId() + ") rendered.");
-                    } else {
-                        view.updateFromUIDL(uidl, this);
-                    }
-                }
-            } catch (final Throwable e) {
-                ClientExceptionHandler.displayError(e);
-            }
-        }
-
-        // Check which widgets' size has been updated
-        Set<Paintable> sizeUpdatedWidgets = new HashSet<Paintable>();
-
-        updatedWidgets.addAll(relativeSizeChanges);
-        sizeUpdatedWidgets.addAll(componentCaptionSizeChanges);
-
-        for (Paintable paintable : updatedWidgets) {
-            ComponentDetail detail = idToPaintableDetail.get(getPid(paintable));
-            Widget widget = (Widget) paintable;
-            Size oldSize = detail.getOffsetSize();
-            Size newSize = new Size(widget.getOffsetWidth(), widget
-                    .getOffsetHeight());
-
-            if (oldSize == null || !oldSize.equals(newSize)) {
-                sizeUpdatedWidgets.add(paintable);
-                detail.setOffsetSize(newSize);
-            }
-
-        }
-
-        Util.componentSizeUpdated(sizeUpdatedWidgets);
-
-        if (meta != null) {
-            if (meta.containsKey("appError")) {
-                ValueMap error = meta.getValueMap("appError");
-                String html = "";
-                if (error.containsKey("caption")
-                        && error.getString("caption") != null) {
-                    html += "<h1>" + error.getAsString("caption") + "</h1>";
-                }
-                if (error.containsKey("message")
-                        && error.getString("message") != null) {
-                    html += "<p>" + error.getAsString("message") + "</p>";
-                }
-                String url = null;
-                if (error.containsKey("url")) {
-                    url = error.getString("url");
-                }
-
-                if (html.length() != 0) {
-                    /* 45 min */
-                    VNotification n = new VNotification(1000 * 60 * 45);
-                    n.addEventListener(new NotificationRedirect(url));
-                    n.show(html, VNotification.CENTERED_TOP,
-                            VNotification.STYLE_SYSTEM);
-                } else {
-                    redirect(url);
-                }
-                applicationRunning = false;
-            }
-            if (validatingLayouts) {
-                getConsole().printLayoutProblems(meta, this,
-                        zeroHeightComponents, zeroWidthComponents);
-                zeroHeightComponents = null;
-                zeroWidthComponents = null;
-                validatingLayouts = false;
-
-            }
-        }
-
-        final long prosessingTime = (new Date().getTime()) - start.getTime();
-        console.log(" Processing time was " + String.valueOf(prosessingTime)
-                + "ms for " + jsonText.length() + " characters of JSON");
-        console.log("Referenced paintables: " + idToPaintableDetail.size());
-
-        endRequest();
-    }
-
-    /**
-     * This method assures that all pending variable changes are sent to server.
-     * Method uses synchronized xmlhttprequest and does not return before the
-     * changes are sent. No UIDL updates are processed and thus UI is left in
-     * inconsistent state. This method should be called only when closing
-     * windows - normally sendPendingVariableChanges() should be used.
-     */
-    public void sendPendingVariableChangesSync() {
-        if (applicationRunning) {
-            pendingVariableBursts.add(pendingVariables);
-            ArrayList<String> nextBurst = pendingVariableBursts.get(0);
-            pendingVariableBursts.remove(0);
-            buildAndSendVariableBurst(nextBurst, true);
-        }
-    }
-
-    // Redirect browser, null reloads current page
-    private static native void redirect(String url)
-    /*-{
-        if (url) {
-           $wnd.location = url;
-        } else {
-            $wnd.location.reload(false);
-        }
-    }-*/;
-
-    public void registerPaintable(String id, Paintable paintable) {
-        ComponentDetail componentDetail = new ComponentDetail();
-        componentDetail.setComponent(paintable);
-        idToPaintableDetail.put(id, componentDetail);
-        setPid(((Widget) paintable).getElement(), id);
-    }
-
-    private native void setPid(Element el, String pid)
-    /*-{
-        el.tkPid = pid;
-    }-*/;
-
-    public String getPid(Paintable paintable) {
-        return getPid(((Widget) paintable).getElement());
-    }
-
-    public native String getPid(Element el)
-    /*-{
-        return el.tkPid;
-    }-*/;
-
-    public Element getElementByPid(String pid) {
-        return ((Widget) getPaintable(pid)).getElement();
-    }
-
-    public void unregisterPaintable(Paintable p) {
-        if (p == null) {
-            ApplicationConnection.getConsole().error(
-                    "WARN: Trying to unregister null paintable");
-            return;
-        }
-        String id = getPid(p);
-        idToPaintableDetail.remove(id);
-        if (p instanceof HasWidgets) {
-            unregisterChildPaintables((HasWidgets) p);
-        }
-    }
-
-    public void unregisterChildPaintables(HasWidgets container) {
-        final Iterator<Widget> it = container.iterator();
-        while (it.hasNext()) {
-            final Widget w = it.next();
-            if (w instanceof Paintable) {
-                unregisterPaintable((Paintable) w);
-            } else if (w instanceof HasWidgets) {
-                unregisterChildPaintables((HasWidgets) w);
-            }
-        }
-    }
-
-    /**
-     * Returns Paintable element by its id
-     * 
-     * @param id
-     *            Paintable ID
-     */
-    public Paintable getPaintable(String id) {
-        ComponentDetail componentDetail = idToPaintableDetail.get(id);
-        if (componentDetail == null) {
-            return null;
-        } else {
-            return componentDetail.getComponent();
-        }
-    }
-
-    private void addVariableToQueue(String paintableId, String variableName,
-            String encodedValue, boolean immediate, char type) {
-        final String id = paintableId + VAR_FIELD_SEPARATOR + variableName
-                + VAR_FIELD_SEPARATOR + type;
-        for (int i = 1; i < pendingVariables.size(); i += 2) {
-            if ((pendingVariables.get(i)).equals(id)) {
-                pendingVariables.remove(i - 1);
-                pendingVariables.remove(i - 1);
-                break;
-            }
-        }
-        pendingVariables.add(encodedValue);
-        pendingVariables.add(id);
-        if (immediate) {
-            sendPendingVariableChanges();
-        }
-    }
-
-    /**
-     * This method sends currently queued variable changes to server. It is
-     * called when immediate variable update must happen.
-     * 
-     * To ensure correct order for variable changes (due servers multithreading
-     * or network), we always wait for active request to be handler before
-     * sending a new one. If there is an active request, we will put varible
-     * "burst" to queue that will be purged after current request is handled.
-     * 
-     */
-    @SuppressWarnings("unchecked")
-    public void sendPendingVariableChanges() {
-        if (applicationRunning) {
-            if (hasActiveRequest()) {
-                // skip empty queues if there are pending bursts to be sent
-                if (pendingVariables.size() > 0
-                        || pendingVariableBursts.size() == 0) {
-                    ArrayList<String> burst = (ArrayList<String>) pendingVariables
-                            .clone();
-                    pendingVariableBursts.add(burst);
-                    pendingVariables.clear();
-                }
-            } else {
-                buildAndSendVariableBurst(pendingVariables, false);
-            }
-        }
-    }
-
-    /**
-     * Build the variable burst and send it to server.
-     * 
-     * When sync is forced, we also force sending of all pending variable-bursts
-     * at the same time. This is ok as we can assume that DOM will never be
-     * updated after this.
-     * 
-     * @param pendingVariables
-     *            Vector of variable changes to send
-     * @param forceSync
-     *            Should we use synchronous request?
-     */
-    private void buildAndSendVariableBurst(ArrayList<String> pendingVariables,
-            boolean forceSync) {
-        final StringBuffer req = new StringBuffer();
-
-        while (!pendingVariables.isEmpty()) {
-            for (int i = 0; i < pendingVariables.size(); i++) {
-                if (i > 0) {
-                    if (i % 2 == 0) {
-                        req.append(VAR_RECORD_SEPARATOR);
-                    } else {
-                        req.append(VAR_FIELD_SEPARATOR);
-                    }
-                }
-                req.append(pendingVariables.get(i));
-            }
-
-            pendingVariables.clear();
-            // Append all the busts to this synchronous request
-            if (forceSync && !pendingVariableBursts.isEmpty()) {
-                pendingVariables = pendingVariableBursts.get(0);
-                pendingVariableBursts.remove(0);
-                req.append(VAR_BURST_SEPARATOR);
-            }
-        }
-        makeUidlRequest(req.toString(), false, forceSync, false);
-    }
-
-    public void updateVariable(String paintableId, String variableName,
-            Paintable newValue, boolean immediate) {
-        String pid = (newValue != null) ? getPid(newValue) : null;
-        addVariableToQueue(paintableId, variableName, pid, immediate, 'p');
-    }
-
-    public void updateVariable(String paintableId, String variableName,
-            String newValue, boolean immediate) {
-        addVariableToQueue(paintableId, variableName, newValue, immediate, 's');
-    }
-
-    public void updateVariable(String paintableId, String variableName,
-            int newValue, boolean immediate) {
-        addVariableToQueue(paintableId, variableName, "" + newValue, immediate,
-                'i');
-    }
-
-    public void updateVariable(String paintableId, String variableName,
-            long newValue, boolean immediate) {
-        addVariableToQueue(paintableId, variableName, "" + newValue, immediate,
-                'l');
-    }
-
-    public void updateVariable(String paintableId, String variableName,
-            float newValue, boolean immediate) {
-        addVariableToQueue(paintableId, variableName, "" + newValue, immediate,
-                'f');
-    }
-
-    public void updateVariable(String paintableId, String variableName,
-            double newValue, boolean immediate) {
-        addVariableToQueue(paintableId, variableName, "" + newValue, immediate,
-                'd');
-    }
-
-    public void updateVariable(String paintableId, String variableName,
-            boolean newValue, boolean immediate) {
-        addVariableToQueue(paintableId, variableName, newValue ? "true"
-                : "false", immediate, 'b');
-    }
-
-    public void updateVariable(String paintableId, String variableName,
-            Object[] values, boolean immediate) {
-        final StringBuffer buf = new StringBuffer();
-        for (int i = 0; i < values.length; i++) {
-            if (i > 0) {
-                buf.append(VAR_ARRAYITEM_SEPARATOR);
-            }
-            buf.append(values[i].toString());
-        }
-        addVariableToQueue(paintableId, variableName, buf.toString(),
-                immediate, 'a');
-    }
-
-    /**
-     * Update generic component features.
-     * 
-     * <h2>Selecting correct implementation</h2>
-     * 
-     * <p>
-     * The implementation of a component depends on many properties, including
-     * styles, component features, etc. Sometimes the user changes those
-     * properties after the component has been created. Calling this method in
-     * the beginning of your updateFromUIDL -method automatically replaces your
-     * component with more appropriate if the requested implementation changes.
-     * </p>
-     * 
-     * <h2>Caption, icon, error messages and description</h2>
-     * 
-     * <p>
-     * Component can delegate management of caption, icon, error messages and
-     * description to parent layout. This is optional an should be decided by
-     * component author
-     * </p>
-     * 
-     * <h2>Component visibility and disabling</h2>
-     * 
-     * This method will manage component visibility automatically and if
-     * component is an instanceof FocusWidget, also handle component disabling
-     * when needed.
-     * 
-     * @param component
-     *            Widget to be updated, expected to implement an instance of
-     *            Paintable
-     * @param uidl
-     *            UIDL to be painted
-     * @param manageCaption
-     *            True if you want to delegate caption, icon, description and
-     *            error message management to parent.
-     * 
-     * @return Returns true iff no further painting is needed by caller
-     */
-    public boolean updateComponent(Widget component, UIDL uidl,
-            boolean manageCaption) {
-        String pid = getPid(component.getElement());
-        if (pid == null) {
-            getConsole().error(
-                    "Trying to update an unregistered component: "
-                            + Util.getSimpleName(component));
-            return true;
-        }
-
-        ComponentDetail componentDetail = idToPaintableDetail.get(pid);
-
-        if (componentDetail == null) {
-            getConsole().error(
-                    "ComponentDetail not found for "
-                            + Util.getSimpleName(component) + " with PID "
-                            + pid + ". This should not happen.");
-            return true;
-        }
-
-        // If the server request that a cached instance should be used, do
-        // nothing
-        if (uidl.getBooleanAttribute("cached")) {
-            return true;
-        }
-
-        // Visibility
-        boolean visible = !uidl.getBooleanAttribute("invisible");
-        boolean wasVisible = component.isVisible();
-        component.setVisible(visible);
-        if (wasVisible != visible) {
-            // Changed invisibile <-> visible
-            if (wasVisible && manageCaption) {
-                // Must hide caption when component is hidden
-                final Container parent = Util.getLayout(component);
-                if (parent != null) {
-                    parent.updateCaption((Paintable) component, uidl);
-                }
-
-            }
-        }
-
-        if (!visible) {
-            // component is invisible, delete old size to notify parent, if
-            // later make visible
-            componentDetail.setOffsetSize(null);
-            return true;
-        }
-
-        // Switch to correct implementation if needed
-        if (!widgetSet.isCorrectImplementation(component, uidl, configuration)) {
-            final Container parent = Util.getLayout(component);
-            if (parent != null) {
-                final Widget w = (Widget) widgetSet.createWidget(uidl,
-                        configuration);
-                parent.replaceChildComponent(component, w);
-                unregisterPaintable((Paintable) component);
-                registerPaintable(uidl.getId(), (Paintable) w);
-                ((Paintable) w).updateFromUIDL(uidl, this);
-                return true;
-            }
-        }
-
-        boolean enabled = !uidl.getBooleanAttribute("disabled");
-        if (component instanceof FocusWidget) {
-            FocusWidget fw = (FocusWidget) component;
-            if (uidl.hasAttribute("tabindex")) {
-                fw.setTabIndex(uidl.getIntAttribute("tabindex"));
-            }
-            // Disabled state may affect tabindex
-            fw.setEnabled(enabled);
-        }
-
-        StringBuffer styleBuf = new StringBuffer();
-        final String primaryName = component.getStylePrimaryName();
-        styleBuf.append(primaryName);
-
-        // first disabling and read-only status
-        if (!enabled) {
-            styleBuf.append(" ");
-            styleBuf.append("v-disabled");
-        }
-        if (uidl.getBooleanAttribute("readonly")) {
-            styleBuf.append(" ");
-            styleBuf.append("v-readonly");
-        }
-
-        // add additional styles as css classes, prefixed with component default
-        // stylename
-        if (uidl.hasAttribute("style")) {
-            final String[] styles = uidl.getStringAttribute("style").split(" ");
-            for (int i = 0; i < styles.length; i++) {
-                styleBuf.append(" ");
-                styleBuf.append(primaryName);
-                styleBuf.append("-");
-                styleBuf.append(styles[i]);
-                styleBuf.append(" ");
-                styleBuf.append(styles[i]);
-            }
-        }
-
-        // add modified classname to Fields
-        if (uidl.hasAttribute("modified") && component instanceof Field) {
-            styleBuf.append(" ");
-            styleBuf.append(MODIFIED_CLASSNAME);
-        }
-
-        TooltipInfo tooltipInfo = componentDetail.getTooltipInfo(null);
-        // Update tooltip
-        if (uidl.hasAttribute(ATTRIBUTE_DESCRIPTION)) {
-            tooltipInfo
-                    .setTitle(uidl.getStringAttribute(ATTRIBUTE_DESCRIPTION));
-        } else {
-            tooltipInfo.setTitle(null);
-        }
-
-        // add error classname to components w/ error
-        if (uidl.hasAttribute(ATTRIBUTE_ERROR)) {
-            tooltipInfo.setErrorUidl(uidl.getErrors());
-            styleBuf.append(" ");
-            styleBuf.append(primaryName);
-            styleBuf.append(ERROR_CLASSNAME_EXT);
-        } else {
-            tooltipInfo.setErrorUidl(null);
-        }
-
-        // add required style to required components
-        if (uidl.hasAttribute("required")) {
-            styleBuf.append(" ");
-            styleBuf.append(primaryName);
-            styleBuf.append(REQUIRED_CLASSNAME_EXT);
-        }
-
-        // Styles + disabled & readonly
-        component.setStyleName(styleBuf.toString());
-
-        // Set captions
-        if (manageCaption) {
-            final Container parent = Util.getLayout(component);
-            if (parent != null) {
-                parent.updateCaption((Paintable) component, uidl);
-            }
-        }
-
-        if (configuration.useDebugIdInDOM() && uidl.getId().startsWith("PID_S")) {
-            DOM.setElementProperty(component.getElement(), "id", uidl.getId()
-                    .substring(5));
-        }
-
-        /*
-         * updateComponentSize need to be after caption update so caption can be
-         * taken into account
-         */
-
-        updateComponentSize(componentDetail, uidl);
-
-        return false;
-    }
-
-    private void updateComponentSize(ComponentDetail cd, UIDL uidl) {
-        String w = uidl.hasAttribute("width") ? uidl
-                .getStringAttribute("width") : "";
-
-        String h = uidl.hasAttribute("height") ? uidl
-                .getStringAttribute("height") : "";
-
-        float relativeWidth = Util.parseRelativeSize(w);
-        float relativeHeight = Util.parseRelativeSize(h);
-
-        // First update maps so they are correct in the setHeight/setWidth calls
-        if (relativeHeight >= 0.0 || relativeWidth >= 0.0) {
-            // One or both is relative
-            FloatSize relativeSize = new FloatSize(relativeWidth,
-                    relativeHeight);
-            if (cd.getRelativeSize() == null && cd.getOffsetSize() != null) {
-                // The component has changed from absolute size to relative size
-                relativeSizeChanges.add(cd.getComponent());
-            }
-            cd.setRelativeSize(relativeSize);
-        } else if (relativeHeight < 0.0 && relativeWidth < 0.0) {
-            if (cd.getRelativeSize() != null) {
-                // The component has changed from relative size to absolute size
-                relativeSizeChanges.add(cd.getComponent());
-            }
-            cd.setRelativeSize(null);
-        }
-
-        Widget component = (Widget) cd.getComponent();
-        // Set absolute sizes
-        if (relativeHeight < 0.0) {
-            component.setHeight(h);
-        }
-        if (relativeWidth < 0.0) {
-            component.setWidth(w);
-        }
-
-        // Set relative sizes
-        if (relativeHeight >= 0.0 || relativeWidth >= 0.0) {
-            // One or both is relative
-            handleComponentRelativeSize(cd);
-        }
-
-    }
-
-    /**
-     * Traverses recursively child widgets until ContainerResizedListener child
-     * widget is found. They will delegate it further if needed.
-     * 
-     * @param container
-     */
-    private boolean runningLayout = false;
-
-    public void runDescendentsLayout(HasWidgets container) {
-        if (runningLayout) {
-            // getConsole().log(
-            // "Already running descendents layout. Not running again for "
-            // + Util.getSimpleName(container));
-            return;
-        }
-        runningLayout = true;
-        internalRunDescendentsLayout(container);
-        runningLayout = false;
-    }
-
-    /**
-     * This will cause re-layouting of all components. Mainly used for
-     * development. Published to JavaScript.
-     */
-    public void forceLayout() {
-        Set<Paintable> set = new HashSet<Paintable>();
-        for (ComponentDetail cd : idToPaintableDetail.values()) {
-            set.add(cd.getComponent());
-        }
-        Util.componentSizeUpdated(set);
-    }
-
-    private void internalRunDescendentsLayout(HasWidgets container) {
-        // getConsole().log(
-        // "runDescendentsLayout(" + Util.getSimpleName(container) + ")");
-        final Iterator<Widget> childWidgets = container.iterator();
-        while (childWidgets.hasNext()) {
-            final Widget child = childWidgets.next();
-
-            if (child instanceof Paintable) {
-
-                if (handleComponentRelativeSize(child)) {
-                    /*
-                     * Only need to propagate event if "child" has a relative
-                     * size
-                     */
-
-                    if (child instanceof ContainerResizedListener) {
-                        ((ContainerResizedListener) child).iLayout();
-                    }
-
-                    if (child instanceof HasWidgets) {
-                        final HasWidgets childContainer = (HasWidgets) child;
-                        internalRunDescendentsLayout(childContainer);
-                    }
-                }
-            } else if (child instanceof HasWidgets) {
-                // propagate over non Paintable HasWidgets
-                internalRunDescendentsLayout((HasWidgets) child);
-            }
-
-        }
-    }
-
-    /**
-     * Converts relative sizes into pixel sizes.
-     * 
-     * @param child
-     * @return true if the child has a relative size
-     */
-    private boolean handleComponentRelativeSize(ComponentDetail cd) {
-        if (cd == null) {
-            return false;
-        }
-        boolean debugSizes = false;
-
-        FloatSize relativeSize = cd.getRelativeSize();
-        if (relativeSize == null) {
-            return false;
-        }
-        Widget widget = (Widget) cd.getComponent();
-
-        boolean horizontalScrollBar = false;
-        boolean verticalScrollBar = false;
-
-        Container parent = Util.getLayout(widget);
-        RenderSpace renderSpace;
-
-        // Parent-less components (like sub-windows) are relative to browser
-        // window.
-        if (parent == null) {
-            renderSpace = new RenderSpace(Window.getClientWidth(), Window
-                    .getClientHeight());
-        } else {
-            renderSpace = parent.getAllocatedSpace(widget);
-        }
-
-        if (relativeSize.getHeight() >= 0) {
-            if (renderSpace != null) {
-
-                if (renderSpace.getScrollbarSize() > 0) {
-                    if (relativeSize.getWidth() > 100) {
-                        horizontalScrollBar = true;
-                    } else if (relativeSize.getWidth() < 0
-                            && renderSpace.getWidth() > 0) {
-                        int offsetWidth = widget.getOffsetWidth();
-                        int width = renderSpace.getWidth();
-                        if (offsetWidth > width) {
-                            horizontalScrollBar = true;
-                        }
-                    }
-                }
-
-                int height = renderSpace.getHeight();
-                if (horizontalScrollBar) {
-                    height -= renderSpace.getScrollbarSize();
-                }
-                if (validatingLayouts && height <= 0) {
-                    zeroHeightComponents.add(cd.getComponent());
-                }
-
-                height = (int) (height * relativeSize.getHeight() / 100.0);
-
-                if (height < 0) {
-                    height = 0;
-                }
-
-                if (debugSizes) {
-                    getConsole()
-                            .log(
-                                    "Widget "
-                                            + Util.getSimpleName(widget)
-                                            + "/"
-                                            + getPid(widget.getElement())
-                                            + " relative height "
-                                            + relativeSize.getHeight()
-                                            + "% of "
-                                            + renderSpace.getHeight()
-                                            + "px (reported by "
-
-                                            + Util.getSimpleName(parent)
-                                            + "/"
-                                            + (parent == null ? "?" : parent
-                                                    .hashCode()) + ") : "
-                                            + height + "px");
-                }
-                widget.setHeight(height + "px");
-            } else {
-                widget.setHeight(relativeSize.getHeight() + "%");
-                ApplicationConnection.getConsole().error(
-                        Util.getLayout(widget).getClass().getName()
-                                + " did not produce allocatedSpace for "
-                                + widget.getClass().getName());
-            }
-        }
-
-        if (relativeSize.getWidth() >= 0) {
-
-            if (renderSpace != null) {
-
-                int width = renderSpace.getWidth();
-
-                if (renderSpace.getScrollbarSize() > 0) {
-                    if (relativeSize.getHeight() > 100) {
-                        verticalScrollBar = true;
-                    } else if (relativeSize.getHeight() < 0
-                            && renderSpace.getHeight() > 0
-                            && widget.getOffsetHeight() > renderSpace
-                                    .getHeight()) {
-                        verticalScrollBar = true;
-                    }
-                }
-
-                if (verticalScrollBar) {
-                    width -= renderSpace.getScrollbarSize();
-                }
-                if (validatingLayouts && width <= 0) {
-                    zeroWidthComponents.add(cd.getComponent());
-                }
-
-                width = (int) (width * relativeSize.getWidth() / 100.0);
-
-                if (width < 0) {
-                    width = 0;
-                }
-
-                if (debugSizes) {
-                    getConsole().log(
-                            "Widget " + Util.getSimpleName(widget) + "/"
-                                    + getPid(widget.getElement())
-                                    + " relative width "
-                                    + relativeSize.getWidth() + "% of "
-                                    + renderSpace.getWidth()
-                                    + "px (reported by "
-                                    + Util.getSimpleName(parent) + "/"
-                                    + (parent == null ? "?" : getPid(parent))
-                                    + ") : " + width + "px");
-                }
-                widget.setWidth(width + "px");
-            } else {
-                widget.setWidth(relativeSize.getWidth() + "%");
-                ApplicationConnection.getConsole().error(
-                        Util.getLayout(widget).getClass().getName()
-                                + " did not produce allocatedSpace for "
-                                + widget.getClass().getName());
-            }
-        }
-
-        return true;
-    }
-
-    /**
-     * Converts relative sizes into pixel sizes.
-     * 
-     * @param child
-     * @return true if the child has a relative size
-     */
-    public boolean handleComponentRelativeSize(Widget child) {
-        return handleComponentRelativeSize(idToPaintableDetail.get(getPid(child
-                .getElement())));
-
-    }
-
-    public FloatSize getRelativeSize(Widget widget) {
-        return idToPaintableDetail.get(getPid(widget.getElement()))
-                .getRelativeSize();
-    }
-
-    /**
-     * Get either existing or new Paintable for given UIDL.
-     * 
-     * If corresponding Paintable has been previously painted, return it.
-     * Otherwise create and register a new Paintable from UIDL. Caller must
-     * update the returned Paintable from UIDL after it has been connected to
-     * parent.
-     * 
-     * @param uidl
-     *            UIDL to create Paintable from.
-     * @return Either existing or new Paintable corresponding to UIDL.
-     */
-    public Paintable getPaintable(UIDL uidl) {
-        final String id = uidl.getId();
-        Paintable w = getPaintable(id);
-        if (w != null) {
-            return w;
-        } else {
-            w = widgetSet.createWidget(uidl, configuration);
-            registerPaintable(id, w);
-            return w;
-
-        }
-    }
-
-    /**
-     * Returns a Paintable element by its root element
-     * 
-     * @param element
-     *            Root element of the paintable
-     */
-    public Paintable getPaintable(Element element) {
-        return getPaintable(getPid(element));
-    }
-
-    public String getResource(String name) {
-        return resourcesMap.get(name);
-    }
-
-    /**
-     * Singleton method to get instance of app's context menu.
-     * 
-     * @return VContextMenu object
-     */
-    public VContextMenu getContextMenu() {
-        if (contextMenu == null) {
-            contextMenu = new VContextMenu();
-            DOM.setElementProperty(contextMenu.getElement(), "id",
-                    "PID_VAADIN_CM");
-        }
-        return contextMenu;
-    }
-
-    /**
-     * Translates custom protocols in UIDL URI's to be recognizable by browser.
-     * All uri's from UIDL should be routed via this method before giving them
-     * to browser due URI's in UIDL may contain custom protocols like theme://.
-     * 
-     * @param uidlUri
-     *            Vaadin URI from uidl
-     * @return translated URI ready for browser
-     */
-    public String translateVaadinUri(String uidlUri) {
-        if (uidlUri == null) {
-            return null;
-        }
-        if (uidlUri.startsWith("theme://")) {
-            final String themeUri = configuration.getThemeUri();
-            if (themeUri == null) {
-                console
-                        .error("Theme not set: ThemeResource will not be found. ("
-                                + uidlUri + ")");
-            }
-            uidlUri = themeUri + uidlUri.substring(7);
-        }
-        return uidlUri;
-    }
-
-    public String getThemeUri() {
-        return configuration.getThemeUri();
-    }
-
-    /**
-     * Listens for Notification hide event, and redirects. Used for system
-     * messages, such as session expired.
-     * 
-     */
-    private class NotificationRedirect implements VNotification.EventListener {
-        String url;
-
-        NotificationRedirect(String url) {
-            this.url = url;
-        }
-
-        public void notificationHidden(HideEvent event) {
-            redirect(url);
-        }
-
-    }
-
-    /* Extended title handling */
-
-    /**
-     * Data showed in tooltips are stored centrilized as it may be needed in
-     * varios place: caption, layouts, and in owner components themselves.
-     * 
-     * Updating TooltipInfo is done in updateComponent method.
-     * 
-     */
-    public TooltipInfo getTooltipTitleInfo(Paintable titleOwner, Object key) {
-        if (null == titleOwner) {
-            return null;
-        }
-        ComponentDetail cd = idToPaintableDetail.get(getPid(titleOwner));
-        if (null != cd) {
-            return cd.getTooltipInfo(key);
-        } else {
-            return null;
-        }
-    }
-
-    private final VTooltip tooltip = new VTooltip(this);
-
-    /**
-     * Component may want to delegate Tooltip handling to client. Layouts add
-     * Tooltip (description, errors) to caption, but some components may want
-     * them to appear one other elements too.
-     * 
-     * Events wanted by this handler are same as in Tooltip.TOOLTIP_EVENTS
-     * 
-     * @param event
-     * @param owner
-     */
-    public void handleTooltipEvent(Event event, Paintable owner) {
-        tooltip.handleTooltipEvent(event, owner, null);
-
-    }
-
-    /**
-     * Component may want to delegate Tooltip handling to client. Layouts add
-     * Tooltip (description, errors) to caption, but some components may want
-     * them to appear one other elements too.
-     * 
-     * Events wanted by this handler are same as in Tooltip.TOOLTIP_EVENTS
-     * 
-     * @param event
-     * @param owner
-     * @param key
-     *            the key for tooltip if this is "additional" tooltip, null for
-     *            components "main tooltip"
-     */
-    public void handleTooltipEvent(Event event, Paintable owner, Object key) {
-        tooltip.handleTooltipEvent(event, owner, key);
-
-    }
-
-    /**
-     * Adds PNG-fix conditionally (only for IE6) to the specified IMG -element.
-     * 
-     * @param el
-     *            the IMG element to fix
-     */
-    public void addPngFix(Element el) {
-        BrowserInfo b = BrowserInfo.get();
-        if (b.isIE6()) {
-            Util.addPngFix(el, getThemeUri() + "/../runo/common/img/blank.gif");
-        }
-    }
-
-    /*
-     * Helper to run layout functions triggered by child components with a
-     * decent interval.
-     */
-    private final Timer layoutTimer = new Timer() {
-
-        private boolean isPending = false;
-
-        @Override
-        public void schedule(int delayMillis) {
-            if (!isPending) {
-                super.schedule(delayMillis);
-                isPending = true;
-            }
-        }
-
-        @Override
-        public void run() {
-            getConsole().log(
-                    "Running re-layout of " + view.getClass().getName());
-            runDescendentsLayout(view);
-            isPending = false;
-        }
-    };
-
-    /**
-     * Components can call this function to run all layout functions. This is
-     * usually done, when component knows that its size has changed.
-     */
-    public void requestLayoutPhase() {
-        layoutTimer.schedule(500);
-    }
-
-    private String windowName = null;
-
-    /**
-     * Reset the name of the current browser-window. This should reflect the
-     * window-name used in the server, but might be different from the
-     * window-object target-name on client.
-     * 
-     * @param stringAttribute
-     *            New name for the window.
-     */
-    public void setWindowName(String newName) {
-        windowName = newName;
-    }
-
-    public void captionSizeUpdated(Paintable component) {
-        componentCaptionSizeChanges.add(component);
-    }
-
-    public void analyzeLayouts() {
-        makeUidlRequest("", true, false, true);
-    }
-
-    public VView getView() {
-        return view;
-    }
-
-    /**
-     * If component has several tooltips in addition to the one provided by
-     * {@link com.vaadin.ui.AbstractComponent}, component can register them with
-     * this method.
-     * <p>
-     * Component must also pipe events to
-     * {@link #handleTooltipEvent(Event, Paintable, Object)} method.
-     * <p>
-     * This method can also be used to deregister tooltips by using null as
-     * tooltip
-     * 
-     * @param paintable
-     *            Paintable "owning" this tooltip
-     * @param key
-     *            key assosiated with given tooltip. Can be any object. For
-     *            example a related dom element. Same key must be given for
-     *            {@link #handleTooltipEvent(Event, Paintable, Object)} method.
-     * 
-     * @param tooltip
-     *            the TooltipInfo object containing details shown in tooltip,
-     *            null if deregistering tooltip
-     */
-    public void registerTooltip(Paintable paintable, Object key,
-            TooltipInfo tooltip) {
-        ComponentDetail componentDetail = idToPaintableDetail
-                .get(getPid(paintable));
-        componentDetail.putAdditionalTooltip(key, tooltip);
-    }
-
-    public ApplicationConfiguration getConfiguration() {
-        return configuration;
-    }
+	public ApplicationConnection(WidgetSet widgetSet,
+			ApplicationConfiguration cnf) {
+		this.widgetSet = widgetSet;
+		configuration = cnf;
+		windowName = configuration.getInitialWindowName();
+		if (isDebugMode()) {
+			console = new VDebugConsole(this, cnf, !isQuietDebugMode());
+		} else {
+			console = new NullConsole();
+		}
+
+		ComponentLocator componentLocator = new ComponentLocator(this);
+
+		String appRootPanelName = cnf.getRootPanelId();
+		// remove the end (window name) of autogenerated rootpanel id
+		appRootPanelName = appRootPanelName.replaceFirst("-\\d+$", "");
+
+		initializeTestbenchHooks(componentLocator, appRootPanelName);
+
+		initializeClientHooks();
+
+		view = new VView(cnf.getRootPanelId());
+		showLoadingIndicator();
+
+	}
+
+	/**
+	 * Starts this application. Don't call this method directly - it's called by
+	 * {@link ApplicationConfiguration#startNextApplication()}, which should be
+	 * called once this application has started (first response received) or
+	 * failed to start. This ensures that the applications are started in order,
+	 * to avoid session-id problems.
+	 */
+	void start() {
+		makeUidlRequest("", true, false, false);
+	}
+
+	private native void initializeTestbenchHooks(
+			ComponentLocator componentLocator, String TTAppId)
+	/*-{
+	    var ap = this;
+	    var client = {};
+	    client.isActive = function() {
+	        return ap.@com.vaadin.terminal.gwt.client.ApplicationConnection::hasActiveRequest()() || ap.@com.vaadin.terminal.gwt.client.ApplicationConnection::isLoadingIndicatorVisible()();
+	    }
+	    var vi = ap.@com.vaadin.terminal.gwt.client.ApplicationConnection::getVersionInfo()();
+	    if (vi) {
+	        client.getVersionInfo = function() {
+	            return vi;
+	        }
+	    }
+
+	    client.getElementByPath = function(id) {
+	       return componentLocator.@com.vaadin.terminal.gwt.client.ComponentLocator::getElementByPath(Ljava/lang/String;)(id);
+	    }
+	    client.getPathForElement = function(element) {
+	       return componentLocator.@com.vaadin.terminal.gwt.client.ComponentLocator::getPathForElement(Lcom/google/gwt/user/client/Element;)(element);
+	    }
+
+	    if(!$wnd.vaadin.clients) {
+	       $wnd.vaadin.clients = {};
+	    }
+
+	    $wnd.vaadin.clients[TTAppId] = client;
+	}-*/;
+
+	/**
+	 * Helper for tt initialization
+	 */
+	@SuppressWarnings("unused")
+	private JavaScriptObject getVersionInfo() {
+		return configuration.getVersionInfoJSObject();
+	}
+
+	/**
+	 * Publishes a JavaScript API for mash-up applications.
+	 * <ul>
+	 * <li><code>vaadin.forceSync()</code> sends pending variable changes, in
+	 * effect synchronizing the server and client state. This is done for all
+	 * applications on host page.</li>
+	 * <li><code>vaadin.postRequestHooks</code> is a map of functions which gets
+	 * called after each XHR made by vaadin application. Note, that it is
+	 * attaching js functions responsibility to create the variable like this:
+	 * 
+	 * <code><pre>
+	 * if(!vaadin.postRequestHooks) {vaadin.postRequestHooks = new Object();}
+	 * postRequestHooks.myHook = function(appId) {
+	 *          if(appId == "MyAppOfInterest") {
+	 *                  // do the staff you need on xhr activity
+	 *          }
+	 * }
+	 * </pre></code> First parameter passed to these functions is the identifier
+	 * of Vaadin application that made the request.
+	 * </ul>
+	 * 
+	 * TODO make this multi-app aware
+	 */
+	private native void initializeClientHooks()
+	/*-{
+	    var app = this;
+	    var oldSync;
+	    if($wnd.vaadin.forceSync) {
+	        oldSync = $wnd.vaadin.forceSync;
+	    }
+	    $wnd.vaadin.forceSync = function() {
+	        if(oldSync) {
+	            oldSync();
+	        }
+	        app.@com.vaadin.terminal.gwt.client.ApplicationConnection::sendPendingVariableChanges()();
+	    }
+	    var oldForceLayout;
+	    if($wnd.vaadin.forceLayout) {
+	        oldForceLayout = $wnd.vaadin.forceLayout;
+	    }
+	    $wnd.vaadin.forceLayout = function() {
+	        if(oldForceLayout) {
+	            oldForceLayout();
+	        }
+	        app.@com.vaadin.terminal.gwt.client.ApplicationConnection::forceLayout()();
+	    }
+	}-*/;
+
+	/**
+	 * Runs possibly registered client side post request hooks. This is expected
+	 * to be run after each uidl request made by Vaadin application.
+	 * 
+	 * @param appId
+	 */
+	private static native void runPostRequestHooks(String appId)
+	/*-{
+	    if($wnd.vaadin.postRequestHooks) {
+	        for(var hook in $wnd.vaadin.postRequestHooks) {
+	            if(typeof($wnd.vaadin.postRequestHooks[hook]) == "function") {
+	                try {
+	                    $wnd.vaadin.postRequestHooks[hook](appId);
+	                } catch(e) {}
+	            }
+	        }
+	    }
+	}-*/;
+
+	public static Console getConsole() {
+		return console;
+	}
+
+	/**
+	 * Checks if client side is in debug mode. Practically this is invoked by
+	 * adding ?debug parameter to URI.
+	 * 
+	 * @return true if client side is currently been debugged
+	 */
+	public native static boolean isDebugMode()
+	/*-{
+	    if($wnd.vaadin.debug) {
+	        var parameters = $wnd.location.search;
+	        var re = /debug[^\/]*$/;
+	        return re.test(parameters);
+	    } else {
+	        return false;
+	    }
+	}-*/;
+
+	private native static boolean isQuietDebugMode()
+	/*-{
+	    var uri = $wnd.location;
+	    var re = /debug=q[^\/]*$/;
+	    return re.test(uri);
+	}-*/;
+
+	public String getAppUri() {
+		return configuration.getApplicationUri();
+	};
+
+	public boolean hasActiveRequest() {
+		return (activeRequests > 0);
+	}
+
+	private void makeUidlRequest(final String requestData,
+			final boolean repaintAll, final boolean forceSync,
+			final boolean analyzeLayouts) {
+		startRequest();
+
+		// Security: double cookie submission pattern
+		final String rd = uidl_security_key + VAR_BURST_SEPARATOR + requestData;
+
+		console.log("Making UIDL Request with params: " + rd);
+		String uri = getAppUri() + "UIDL" + configuration.getPathInfo();
+		if (repaintAll) {
+			// collect some client side data that will be sent to server on
+			// initial uidl request
+			int clientHeight = Window.getClientHeight();
+			int clientWidth = Window.getClientWidth();
+			com.google.gwt.dom.client.Element pe = view.getElement()
+					.getParentElement();
+			int offsetHeight = pe.getOffsetHeight();
+			int offsetWidth = pe.getOffsetWidth();
+			int screenWidth = BrowserInfo.get().getScreenWidth();
+			int screenHeight = BrowserInfo.get().getScreenHeight();
+
+			String token = History.getToken();
+
+			// TODO figure out how client and view size could be used better on
+			// server. screen size can be accessed via Browser object, but other
+			// values currently only via transaction listener.
+			uri += "?repaintAll=1&" + "sh=" + screenHeight + "&sw="
+					+ screenWidth + "&cw=" + clientWidth + "&ch="
+					+ clientHeight + "&vw=" + offsetWidth + "&vh="
+					+ offsetHeight + "&fr=" + token;
+			if (analyzeLayouts) {
+				uri += "&analyzeLayouts=1";
+			}
+		}
+		if (windowName != null && windowName.length() > 0) {
+			uri += (repaintAll ? "&" : "?") + "windowName=" + windowName;
+		}
+
+		if (!forceSync) {
+			boolean success = false;
+			final RequestBuilder rb = new RequestBuilder(RequestBuilder.POST,
+					uri);
+			// TODO enable timeout
+			// rb.setTimeoutMillis(timeoutMillis);
+			rb.setHeader("Content-Type", "text/plain;charset=utf-8");
+			try {
+				rb.sendRequest(rd, new RequestCallback() {
+					public void onError(Request request, Throwable exception) {
+						showCommunicationError(exception.getMessage());
+						endRequest();
+						if (!applicationRunning) {
+							// start failed, let's try to start the next app
+							ApplicationConfiguration.startNextApplication();
+						}
+					}
+
+					public void onResponseReceived(Request request,
+							Response response) {
+						console.log("Server visit took "
+								+ String.valueOf((new Date()).getTime()
+										- requestStartTime.getTime()) + "ms");
+
+						switch (response.getStatusCode()) {
+						case 0:
+							showCommunicationError("Invalid status code 0 (server down?)");
+							return;
+							// TODO could add more cases
+						case 503:
+							// We'll assume msec instead of the usual seconds
+							int delay = Integer.parseInt(response
+									.getHeader("Retry-After"));
+							console.log("503, retrying in " + delay + "msec");
+							(new Timer() {
+								@Override
+								public void run() {
+									activeRequests--;
+									makeUidlRequest(requestData, repaintAll,
+											forceSync, analyzeLayouts);
+								}
+							}).schedule(delay);
+							return;
+
+						}
+
+						if (applicationRunning) {
+							handleReceivedJSONMessage(response);
+						} else {
+							applicationRunning = true;
+							handleWhenCSSLoaded(response);
+							ApplicationConfiguration.startNextApplication();
+						}
+					}
+
+					int cssWaits = 0;
+					static final int MAX_CSS_WAITS = 20;
+
+					private void handleWhenCSSLoaded(final Response response) {
+						int heightOfLoadElement = DOM.getElementPropertyInt(
+								loadElement, "offsetHeight");
+						if (heightOfLoadElement == 0
+								&& cssWaits < MAX_CSS_WAITS) {
+							(new Timer() {
+								@Override
+								public void run() {
+									handleWhenCSSLoaded(response);
+								}
+							}).schedule(50);
+							console
+									.log("Assuming CSS loading is not complete, "
+											+ "postponing render phase. "
+											+ "(.v-loading-indicator height == 0)");
+							cssWaits++;
+						} else {
+							handleReceivedJSONMessage(response);
+							if (cssWaits >= MAX_CSS_WAITS) {
+								console
+										.error("CSS files may have not loaded properly.");
+							}
+						}
+					}
+
+				});
+
+			} catch (final RequestException e) {
+				ClientExceptionHandler.displayError(e);
+				endRequest();
+			}
+		} else {
+			// Synchronized call, discarded response
+
+			syncSendForce(((HTTPRequestImpl) GWT.create(HTTPRequestImpl.class))
+					.createXmlHTTPRequest(), uri + "&" + PARAM_UNLOADBURST
+					+ "=1", rd);
+		}
+	}
+
+	/**
+	 * Shows the communication error notification. The 'details' only go to the
+	 * console for now.
+	 * 
+	 * @param details
+	 *            Optional details for debugging.
+	 */
+	private void showCommunicationError(String details) {
+		console.error("Communication error: " + details);
+		String html = "";
+		if (configuration.getCommunicationErrorCaption() != null) {
+			html += "<h1>" + configuration.getCommunicationErrorCaption()
+					+ "</h1>";
+		}
+		if (configuration.getCommunicationErrorMessage() != null) {
+			html += "<p>" + configuration.getCommunicationErrorMessage()
+					+ "</p>";
+		}
+		if (html.length() > 0) {
+			VNotification n = new VNotification(1000 * 60 * 45);
+			n.addEventListener(new NotificationRedirect(configuration
+					.getCommunicationErrorUrl()));
+			n
+					.show(html, VNotification.CENTERED_TOP,
+							VNotification.STYLE_SYSTEM);
+		} else {
+			redirect(configuration.getCommunicationErrorUrl());
+		}
+	}
+
+	private native void syncSendForce(JavaScriptObject xmlHttpRequest,
+			String uri, String requestData)
+	/*-{
+	    try {
+	        xmlHttpRequest.open("POST", uri, false);
+	        xmlHttpRequest.setRequestHeader("Content-Type", "text/plain;charset=utf-8");
+	        xmlHttpRequest.send(requestData);
+	    } catch (e) {
+	       // No errors are managed as this is synchronous forceful send that can just fail
+	    }
+	    this.@com.vaadin.terminal.gwt.client.ApplicationConnection::endRequest()();
+	}-*/;
+
+	private void startRequest() {
+		activeRequests++;
+		requestStartTime = new Date();
+		// show initial throbber
+		if (loadTimer == null) {
+			loadTimer = new Timer() {
+				@Override
+				public void run() {
+					/*
+					 * IE7 does not properly cancel the event with
+					 * loadTimer.cancel() so we have to check that we really
+					 * should make it visible
+					 */
+					if (loadTimer != null) {
+						showLoadingIndicator();
+					}
+
+				}
+			};
+			// First one kicks in at 300ms
+		}
+		loadTimer.schedule(300);
+	}
+
+	private void endRequest() {
+		if (applicationRunning) {
+			checkForPendingVariableBursts();
+			runPostRequestHooks(configuration.getRootPanelId());
+		}
+		activeRequests--;
+		// deferring to avoid flickering
+		DeferredCommand.addCommand(new Command() {
+			public void execute() {
+				if (activeRequests == 0) {
+					hideLoadingIndicator();
+				}
+			}
+		});
+	}
+
+	/**
+	 * This method is called after applying uidl change set to application.
+	 * 
+	 * It will clean current and queued variable change sets. And send next
+	 * change set if it exists.
+	 */
+	private void checkForPendingVariableBursts() {
+		cleanVariableBurst(pendingVariables);
+		if (pendingVariableBursts.size() > 0) {
+			for (Iterator<ArrayList<String>> iterator = pendingVariableBursts
+					.iterator(); iterator.hasNext();) {
+				cleanVariableBurst(iterator.next());
+			}
+			ArrayList<String> nextBurst = pendingVariableBursts.get(0);
+			pendingVariableBursts.remove(0);
+			buildAndSendVariableBurst(nextBurst, false);
+		}
+	}
+
+	/**
+	 * Cleans given queue of variable changes of such changes that came from
+	 * components that do not exist anymore.
+	 * 
+	 * @param variableBurst
+	 */
+	private void cleanVariableBurst(ArrayList<String> variableBurst) {
+		for (int i = 1; i < variableBurst.size(); i += 2) {
+			String id = variableBurst.get(i);
+			id = id.substring(0, id.indexOf(VAR_FIELD_SEPARATOR));
+			if (!idToPaintableDetail.containsKey(id)) {
+				// variable owner does not exist anymore
+				variableBurst.remove(i - 1);
+				variableBurst.remove(i - 1);
+				i -= 2;
+				ApplicationConnection.getConsole().log(
+						"Removed variable from removed component: " + id);
+			}
+		}
+	}
+
+	private void showLoadingIndicator() {
+		// show initial throbber
+		if (loadElement == null) {
+			loadElement = DOM.createDiv();
+			DOM.setStyleAttribute(loadElement, "position", "absolute");
+			DOM.appendChild(view.getElement(), loadElement);
+			ApplicationConnection.getConsole().log("inserting load indicator");
+		}
+		DOM.setElementProperty(loadElement, "className", "v-loading-indicator");
+		DOM.setStyleAttribute(loadElement, "display", "block");
+		// Initialize other timers
+		loadTimer2 = new Timer() {
+			@Override
+			public void run() {
+				DOM.setElementProperty(loadElement, "className",
+						"v-loading-indicator-delay");
+			}
+		};
+		// Second one kicks in at 1500ms from request start
+		loadTimer2.schedule(1200);
+
+		loadTimer3 = new Timer() {
+			@Override
+			public void run() {
+				DOM.setElementProperty(loadElement, "className",
+						"v-loading-indicator-wait");
+			}
+		};
+		// Third one kicks in at 5000ms from request start
+		loadTimer3.schedule(4700);
+	}
+
+	private void hideLoadingIndicator() {
+		if (loadTimer != null) {
+			loadTimer.cancel();
+			if (loadTimer2 != null) {
+				loadTimer2.cancel();
+				loadTimer3.cancel();
+			}
+			loadTimer = null;
+		}
+		if (loadElement != null) {
+			DOM.setStyleAttribute(loadElement, "display", "none");
+		}
+	}
+
+	public boolean isLoadingIndicatorVisible() {
+		if (loadElement == null) {
+			return false;
+		}
+		if (loadElement.getStyle().getProperty("display").equals("none")) {
+			return false;
+		}
+
+		return true;
+	}
+
+	private static native ValueMap parseJSONResponse(String jsonText)
+	/*-{
+	    try {
+	        return JSON.parse(jsonText);
+	    } catch(ignored) {
+	        return eval('(' + jsonText + ')');
+	    }
+	}-*/;
+
+	private void handleReceivedJSONMessage(Response response) {
+		final Date start = new Date();
+		String jsonText = response.getText();
+		// for(;;);[realjson]
+		jsonText = jsonText.substring(9, jsonText.length() - 1);
+		ValueMap json;
+		try {
+			json = parseJSONResponse(jsonText);
+		} catch (final Exception e) {
+			endRequest();
+			showCommunicationError(e.getMessage() + " - Original JSON-text:");
+			console.log(jsonText);
+			return;
+		}
+
+		ApplicationConnection.getConsole()
+				.log(
+						"JSON parsing took "
+								+ (new Date().getTime() - start.getTime()));
+		// Handle redirect
+		if (json.containsKey("redirect")) {
+			String url = json.getValueMap("redirect").getString("url");
+			console.log("redirecting to " + url);
+			redirect(url);
+			return;
+		}
+
+		// Get security key
+		if (json.containsKey(UIDL_SECURITY_TOKEN_ID)) {
+			uidl_security_key = json.getString(UIDL_SECURITY_TOKEN_ID);
+		}
+
+		if (json.containsKey("resources")) {
+			ValueMap resources = json.getValueMap("resources");
+			JsArrayString keyArray = resources.getKeyArray();
+			int l = keyArray.length();
+			for (int i = 0; i < l; i++) {
+				String key = keyArray.get(i);
+				resourcesMap.put(key, resources.getAsString(key));
+			}
+		}
+
+		if (json.containsKey("typeMappings")) {
+			configuration.addComponentMappings(
+					json.getValueMap("typeMappings"), widgetSet);
+		}
+
+		if (json.containsKey("locales")) {
+			// Store locale data
+			JsArray<ValueMap> valueMapArray = json
+					.getJSValueMapArray("locales");
+			LocaleService.addLocales(valueMapArray);
+		}
+
+		ValueMap meta = null;
+		if (json.containsKey("meta")) {
+			meta = json.getValueMap("meta");
+			if (meta.containsKey("repaintAll")) {
+				view.clear();
+				idToPaintableDetail.clear();
+				if (meta.containsKey("invalidLayouts")) {
+					validatingLayouts = true;
+					zeroWidthComponents = new HashSet<Paintable>();
+					zeroHeightComponents = new HashSet<Paintable>();
+				}
+			}
+			if (meta.containsKey("timedRedirect")) {
+				final ValueMap timedRedirect = meta
+						.getValueMap("timedRedirect");
+				redirectTimer = new Timer() {
+					@Override
+					public void run() {
+						redirect(timedRedirect.getString("url"));
+					}
+				};
+				sessionExpirationInterval = timedRedirect.getInt("interval");
+			}
+		}
+
+		if (redirectTimer != null) {
+			redirectTimer.schedule(1000 * sessionExpirationInterval);
+		}
+
+		// Process changes
+		JsArray<ValueMap> changes = json.getJSValueMapArray("changes");
+
+		ArrayList<Paintable> updatedWidgets = new ArrayList<Paintable>();
+		relativeSizeChanges.clear();
+		componentCaptionSizeChanges.clear();
+
+		int length = changes.length();
+		for (int i = 0; i < length; i++) {
+			try {
+				final UIDL change = changes.get(i).cast();
+				try {
+					console.dirUIDL(change);
+				} catch (final Exception e) {
+					ClientExceptionHandler.displayError(e);
+					// TODO: dir doesn't work in any browser although it should
+					// work (works in hosted mode)
+					// it partially did at some part but now broken.
+				}
+				final UIDL uidl = change.getChildUIDL(0);
+				// TODO optimize
+				final Paintable paintable = getPaintable(uidl.getId());
+				if (paintable != null) {
+					paintable.updateFromUIDL(uidl, this);
+					// paintable may have changed during render to another
+					// implementation, use the new one for updated widgets map
+					updatedWidgets.add(idToPaintableDetail.get(uidl.getId())
+							.getComponent());
+				} else {
+					if (!uidl.getTag().equals("0")) {
+						ClientExceptionHandler
+								.displayError("Received update for "
+										+ uidl.getTag()
+										+ ", but there is no such paintable ("
+										+ uidl.getId() + ") rendered.");
+					} else {
+						view.updateFromUIDL(uidl, this);
+					}
+				}
+			} catch (final Throwable e) {
+				ClientExceptionHandler.displayError(e);
+			}
+		}
+
+		// Check which widgets' size has been updated
+		Set<Paintable> sizeUpdatedWidgets = new HashSet<Paintable>();
+
+		updatedWidgets.addAll(relativeSizeChanges);
+		sizeUpdatedWidgets.addAll(componentCaptionSizeChanges);
+
+		for (Paintable paintable : updatedWidgets) {
+			ComponentDetail detail = idToPaintableDetail.get(getPid(paintable));
+			Widget widget = (Widget) paintable;
+			Size oldSize = detail.getOffsetSize();
+			Size newSize = new Size(widget.getOffsetWidth(), widget
+					.getOffsetHeight());
+
+			if (oldSize == null || !oldSize.equals(newSize)) {
+				sizeUpdatedWidgets.add(paintable);
+				detail.setOffsetSize(newSize);
+			}
+
+		}
+
+		Util.componentSizeUpdated(sizeUpdatedWidgets);
+
+		if (meta != null) {
+			if (meta.containsKey("appError")) {
+				ValueMap error = meta.getValueMap("appError");
+				String html = "";
+				if (error.containsKey("caption")
+						&& error.getString("caption") != null) {
+					html += "<h1>" + error.getAsString("caption") + "</h1>";
+				}
+				if (error.containsKey("message")
+						&& error.getString("message") != null) {
+					html += "<p>" + error.getAsString("message") + "</p>";
+				}
+				String url = null;
+				if (error.containsKey("url")) {
+					url = error.getString("url");
+				}
+
+				if (html.length() != 0) {
+					/* 45 min */
+					VNotification n = new VNotification(1000 * 60 * 45);
+					n.addEventListener(new NotificationRedirect(url));
+					n.show(html, VNotification.CENTERED_TOP,
+							VNotification.STYLE_SYSTEM);
+				} else {
+					redirect(url);
+				}
+				applicationRunning = false;
+			}
+			if (validatingLayouts) {
+				getConsole().printLayoutProblems(meta, this,
+						zeroHeightComponents, zeroWidthComponents);
+				zeroHeightComponents = null;
+				zeroWidthComponents = null;
+				validatingLayouts = false;
+
+			}
+		}
+
+		final long prosessingTime = (new Date().getTime()) - start.getTime();
+		console.log(" Processing time was " + String.valueOf(prosessingTime)
+				+ "ms for " + jsonText.length() + " characters of JSON");
+		console.log("Referenced paintables: " + idToPaintableDetail.size());
+
+		endRequest();
+	}
+
+	/**
+	 * This method assures that all pending variable changes are sent to server.
+	 * Method uses synchronized xmlhttprequest and does not return before the
+	 * changes are sent. No UIDL updates are processed and thus UI is left in
+	 * inconsistent state. This method should be called only when closing
+	 * windows - normally sendPendingVariableChanges() should be used.
+	 */
+	public void sendPendingVariableChangesSync() {
+		if (applicationRunning) {
+			pendingVariableBursts.add(pendingVariables);
+			ArrayList<String> nextBurst = pendingVariableBursts.get(0);
+			pendingVariableBursts.remove(0);
+			buildAndSendVariableBurst(nextBurst, true);
+		}
+	}
+
+	// Redirect browser, null reloads current page
+	private static native void redirect(String url)
+	/*-{
+	    if (url) {
+	       $wnd.location = url;
+	    } else {
+	        $wnd.location.reload(false);
+	    }
+	}-*/;
+
+	public void registerPaintable(String id, Paintable paintable) {
+		ComponentDetail componentDetail = new ComponentDetail();
+		componentDetail.setComponent(paintable);
+		idToPaintableDetail.put(id, componentDetail);
+		setPid(((Widget) paintable).getElement(), id);
+	}
+
+	private native void setPid(Element el, String pid)
+	/*-{
+	    el.tkPid = pid;
+	}-*/;
+
+	public String getPid(Paintable paintable) {
+		return getPid(((Widget) paintable).getElement());
+	}
+
+	public native String getPid(Element el)
+	/*-{
+	    return el.tkPid;
+	}-*/;
+
+	public Element getElementByPid(String pid) {
+		return ((Widget) getPaintable(pid)).getElement();
+	}
+
+	public void unregisterPaintable(Paintable p) {
+		if (p == null) {
+			ApplicationConnection.getConsole().error(
+					"WARN: Trying to unregister null paintable");
+			return;
+		}
+		String id = getPid(p);
+		idToPaintableDetail.remove(id);
+		if (p instanceof HasWidgets) {
+			unregisterChildPaintables((HasWidgets) p);
+		}
+	}
+
+	public void unregisterChildPaintables(HasWidgets container) {
+		final Iterator<Widget> it = container.iterator();
+		while (it.hasNext()) {
+			final Widget w = it.next();
+			if (w instanceof Paintable) {
+				unregisterPaintable((Paintable) w);
+			} else if (w instanceof HasWidgets) {
+				unregisterChildPaintables((HasWidgets) w);
+			}
+		}
+	}
+
+	/**
+	 * Returns Paintable element by its id
+	 * 
+	 * @param id
+	 *            Paintable ID
+	 */
+	public Paintable getPaintable(String id) {
+		ComponentDetail componentDetail = idToPaintableDetail.get(id);
+		if (componentDetail == null) {
+			return null;
+		} else {
+			return componentDetail.getComponent();
+		}
+	}
+
+	private void addVariableToQueue(String paintableId, String variableName,
+			String encodedValue, boolean immediate, char type) {
+		final String id = paintableId + VAR_FIELD_SEPARATOR + variableName
+				+ VAR_FIELD_SEPARATOR + type;
+		for (int i = 1; i < pendingVariables.size(); i += 2) {
+			if ((pendingVariables.get(i)).equals(id)) {
+				pendingVariables.remove(i - 1);
+				pendingVariables.remove(i - 1);
+				break;
+			}
+		}
+		pendingVariables.add(encodedValue);
+		pendingVariables.add(id);
+		if (immediate) {
+			sendPendingVariableChanges();
+		}
+	}
+
+	/**
+	 * This method sends currently queued variable changes to server. It is
+	 * called when immediate variable update must happen.
+	 * 
+	 * To ensure correct order for variable changes (due servers multithreading
+	 * or network), we always wait for active request to be handler before
+	 * sending a new one. If there is an active request, we will put varible
+	 * "burst" to queue that will be purged after current request is handled.
+	 * 
+	 */
+	@SuppressWarnings("unchecked")
+	public void sendPendingVariableChanges() {
+		if (applicationRunning) {
+			if (hasActiveRequest()) {
+				// skip empty queues if there are pending bursts to be sent
+				if (pendingVariables.size() > 0
+						|| pendingVariableBursts.size() == 0) {
+					ArrayList<String> burst = (ArrayList<String>) pendingVariables
+							.clone();
+					pendingVariableBursts.add(burst);
+					pendingVariables.clear();
+				}
+			} else {
+				buildAndSendVariableBurst(pendingVariables, false);
+			}
+		}
+	}
+
+	/**
+	 * Build the variable burst and send it to server.
+	 * 
+	 * When sync is forced, we also force sending of all pending variable-bursts
+	 * at the same time. This is ok as we can assume that DOM will never be
+	 * updated after this.
+	 * 
+	 * @param pendingVariables
+	 *            Vector of variable changes to send
+	 * @param forceSync
+	 *            Should we use synchronous request?
+	 */
+	private void buildAndSendVariableBurst(ArrayList<String> pendingVariables,
+			boolean forceSync) {
+		final StringBuffer req = new StringBuffer();
+
+		while (!pendingVariables.isEmpty()) {
+			for (int i = 0; i < pendingVariables.size(); i++) {
+				if (i > 0) {
+					if (i % 2 == 0) {
+						req.append(VAR_RECORD_SEPARATOR);
+					} else {
+						req.append(VAR_FIELD_SEPARATOR);
+					}
+				}
+				req.append(pendingVariables.get(i));
+			}
+
+			pendingVariables.clear();
+			// Append all the busts to this synchronous request
+			if (forceSync && !pendingVariableBursts.isEmpty()) {
+				pendingVariables = pendingVariableBursts.get(0);
+				pendingVariableBursts.remove(0);
+				req.append(VAR_BURST_SEPARATOR);
+			}
+		}
+		makeUidlRequest(req.toString(), false, forceSync, false);
+	}
+
+	public void updateVariable(String paintableId, String variableName,
+			Paintable newValue, boolean immediate) {
+		String pid = (newValue != null) ? getPid(newValue) : null;
+		addVariableToQueue(paintableId, variableName, pid, immediate, 'p');
+	}
+
+	public void updateVariable(String paintableId, String variableName,
+			String newValue, boolean immediate) {
+		addVariableToQueue(paintableId, variableName, newValue, immediate, 's');
+	}
+
+	public void updateVariable(String paintableId, String variableName,
+			int newValue, boolean immediate) {
+		addVariableToQueue(paintableId, variableName, "" + newValue, immediate,
+				'i');
+	}
+
+	public void updateVariable(String paintableId, String variableName,
+			long newValue, boolean immediate) {
+		addVariableToQueue(paintableId, variableName, "" + newValue, immediate,
+				'l');
+	}
+
+	public void updateVariable(String paintableId, String variableName,
+			float newValue, boolean immediate) {
+		addVariableToQueue(paintableId, variableName, "" + newValue, immediate,
+				'f');
+	}
+
+	public void updateVariable(String paintableId, String variableName,
+			double newValue, boolean immediate) {
+		addVariableToQueue(paintableId, variableName, "" + newValue, immediate,
+				'd');
+	}
+
+	public void updateVariable(String paintableId, String variableName,
+			boolean newValue, boolean immediate) {
+		addVariableToQueue(paintableId, variableName, newValue ? "true"
+				: "false", immediate, 'b');
+	}
+
+	public void updateVariable(String paintableId, String variableName,
+			Object[] values, boolean immediate) {
+		final StringBuffer buf = new StringBuffer();
+		for (int i = 0; i < values.length; i++) {
+			if (i > 0) {
+				buf.append(VAR_ARRAYITEM_SEPARATOR);
+			}
+			buf.append(values[i].toString());
+		}
+		addVariableToQueue(paintableId, variableName, buf.toString(),
+				immediate, 'a');
+	}
+
+	/**
+	 * Update generic component features.
+	 * 
+	 * <h2>Selecting correct implementation</h2>
+	 * 
+	 * <p>
+	 * The implementation of a component depends on many properties, including
+	 * styles, component features, etc. Sometimes the user changes those
+	 * properties after the component has been created. Calling this method in
+	 * the beginning of your updateFromUIDL -method automatically replaces your
+	 * component with more appropriate if the requested implementation changes.
+	 * </p>
+	 * 
+	 * <h2>Caption, icon, error messages and description</h2>
+	 * 
+	 * <p>
+	 * Component can delegate management of caption, icon, error messages and
+	 * description to parent layout. This is optional an should be decided by
+	 * component author
+	 * </p>
+	 * 
+	 * <h2>Component visibility and disabling</h2>
+	 * 
+	 * This method will manage component visibility automatically and if
+	 * component is an instanceof FocusWidget, also handle component disabling
+	 * when needed.
+	 * 
+	 * @param component
+	 *            Widget to be updated, expected to implement an instance of
+	 *            Paintable
+	 * @param uidl
+	 *            UIDL to be painted
+	 * @param manageCaption
+	 *            True if you want to delegate caption, icon, description and
+	 *            error message management to parent.
+	 * 
+	 * @return Returns true iff no further painting is needed by caller
+	 */
+	public boolean updateComponent(Widget component, UIDL uidl,
+			boolean manageCaption) {
+		String pid = getPid(component.getElement());
+		if (pid == null) {
+			getConsole().error(
+					"Trying to update an unregistered component: "
+							+ Util.getSimpleName(component));
+			return true;
+		}
+
+		ComponentDetail componentDetail = idToPaintableDetail.get(pid);
+
+		if (componentDetail == null) {
+			getConsole().error(
+					"ComponentDetail not found for "
+							+ Util.getSimpleName(component) + " with PID "
+							+ pid + ". This should not happen.");
+			return true;
+		}
+
+		// If the server request that a cached instance should be used, do
+		// nothing
+		if (uidl.getBooleanAttribute("cached")) {
+			return true;
+		}
+
+		// Visibility
+		boolean visible = !uidl.getBooleanAttribute("invisible");
+		boolean wasVisible = component.isVisible();
+		component.setVisible(visible);
+		if (wasVisible != visible) {
+			// Changed invisibile <-> visible
+			if (wasVisible && manageCaption) {
+				// Must hide caption when component is hidden
+				final Container parent = Util.getLayout(component);
+				if (parent != null) {
+					parent.updateCaption((Paintable) component, uidl);
+				}
+
+			}
+		}
+
+		if (!visible) {
+			// component is invisible, delete old size to notify parent, if
+			// later make visible
+			componentDetail.setOffsetSize(null);
+			return true;
+		}
+
+		// Switch to correct implementation if needed
+		if (!widgetSet.isCorrectImplementation(component, uidl, configuration)) {
+			final Container parent = Util.getLayout(component);
+			if (parent != null) {
+				final Widget w = (Widget) widgetSet.createWidget(uidl,
+						configuration);
+				parent.replaceChildComponent(component, w);
+				unregisterPaintable((Paintable) component);
+				registerPaintable(uidl.getId(), (Paintable) w);
+				((Paintable) w).updateFromUIDL(uidl, this);
+				return true;
+			}
+		}
+
+		boolean enabled = !uidl.getBooleanAttribute("disabled");
+		if (component instanceof FocusWidget) {
+			FocusWidget fw = (FocusWidget) component;
+			if (uidl.hasAttribute("tabindex")) {
+				fw.setTabIndex(uidl.getIntAttribute("tabindex"));
+			}
+			// Disabled state may affect tabindex
+			fw.setEnabled(enabled);
+		}
+
+		StringBuffer styleBuf = new StringBuffer();
+		final String primaryName = component.getStylePrimaryName();
+		styleBuf.append(primaryName);
+
+		// first disabling and read-only status
+		if (!enabled) {
+			styleBuf.append(" ");
+			styleBuf.append("v-disabled");
+		}
+		if (uidl.getBooleanAttribute("readonly")) {
+			styleBuf.append(" ");
+			styleBuf.append("v-readonly");
+		}
+
+		// add additional styles as css classes, prefixed with component default
+		// stylename
+		if (uidl.hasAttribute("style")) {
+			final String[] styles = uidl.getStringAttribute("style").split(" ");
+			for (int i = 0; i < styles.length; i++) {
+				styleBuf.append(" ");
+				styleBuf.append(primaryName);
+				styleBuf.append("-");
+				styleBuf.append(styles[i]);
+				styleBuf.append(" ");
+				styleBuf.append(styles[i]);
+			}
+		}
+
+		// add modified classname to Fields
+		if (uidl.hasAttribute("modified") && component instanceof Field) {
+			styleBuf.append(" ");
+			styleBuf.append(MODIFIED_CLASSNAME);
+		}
+
+		TooltipInfo tooltipInfo = componentDetail.getTooltipInfo(null);
+		// Update tooltip
+		if (uidl.hasAttribute(ATTRIBUTE_DESCRIPTION)) {
+			tooltipInfo
+					.setTitle(uidl.getStringAttribute(ATTRIBUTE_DESCRIPTION));
+		} else {
+			tooltipInfo.setTitle(null);
+		}
+
+		// add error classname to components w/ error
+		if (uidl.hasAttribute(ATTRIBUTE_ERROR)) {
+			tooltipInfo.setErrorUidl(uidl.getErrors());
+			styleBuf.append(" ");
+			styleBuf.append(primaryName);
+			styleBuf.append(ERROR_CLASSNAME_EXT);
+		} else {
+			tooltipInfo.setErrorUidl(null);
+		}
+
+		// add required style to required components
+		if (uidl.hasAttribute("required")) {
+			styleBuf.append(" ");
+			styleBuf.append(primaryName);
+			styleBuf.append(REQUIRED_CLASSNAME_EXT);
+		}
+
+		// Styles + disabled & readonly
+		component.setStyleName(styleBuf.toString());
+
+		// Set captions
+		if (manageCaption) {
+			final Container parent = Util.getLayout(component);
+			if (parent != null) {
+				parent.updateCaption((Paintable) component, uidl);
+			}
+		}
+
+		if (configuration.useDebugIdInDOM() && uidl.getId().startsWith("PID_S")) {
+			DOM.setElementProperty(component.getElement(), "id", uidl.getId()
+					.substring(5));
+		}
+
+		/*
+		 * updateComponentSize need to be after caption update so caption can be
+		 * taken into account
+		 */
+
+		updateComponentSize(componentDetail, uidl);
+
+		return false;
+	}
+
+	private void updateComponentSize(ComponentDetail cd, UIDL uidl) {
+		String w = uidl.hasAttribute("width") ? uidl
+				.getStringAttribute("width") : "";
+
+		String h = uidl.hasAttribute("height") ? uidl
+				.getStringAttribute("height") : "";
+
+		float relativeWidth = Util.parseRelativeSize(w);
+		float relativeHeight = Util.parseRelativeSize(h);
+
+		// First update maps so they are correct in the setHeight/setWidth calls
+		if (relativeHeight >= 0.0 || relativeWidth >= 0.0) {
+			// One or both is relative
+			FloatSize relativeSize = new FloatSize(relativeWidth,
+					relativeHeight);
+			if (cd.getRelativeSize() == null && cd.getOffsetSize() != null) {
+				// The component has changed from absolute size to relative size
+				relativeSizeChanges.add(cd.getComponent());
+			}
+			cd.setRelativeSize(relativeSize);
+		} else if (relativeHeight < 0.0 && relativeWidth < 0.0) {
+			if (cd.getRelativeSize() != null) {
+				// The component has changed from relative size to absolute size
+				relativeSizeChanges.add(cd.getComponent());
+			}
+			cd.setRelativeSize(null);
+		}
+
+		Widget component = (Widget) cd.getComponent();
+		// Set absolute sizes
+		if (relativeHeight < 0.0) {
+			component.setHeight(h);
+		}
+		if (relativeWidth < 0.0) {
+			component.setWidth(w);
+		}
+
+		// Set relative sizes
+		if (relativeHeight >= 0.0 || relativeWidth >= 0.0) {
+			// One or both is relative
+			handleComponentRelativeSize(cd);
+		}
+
+	}
+
+	/**
+	 * Traverses recursively child widgets until ContainerResizedListener child
+	 * widget is found. They will delegate it further if needed.
+	 * 
+	 * @param container
+	 */
+	private boolean runningLayout = false;
+
+	public void runDescendentsLayout(HasWidgets container) {
+		if (runningLayout) {
+			// getConsole().log(
+			// "Already running descendents layout. Not running again for "
+			// + Util.getSimpleName(container));
+			return;
+		}
+		runningLayout = true;
+		internalRunDescendentsLayout(container);
+		runningLayout = false;
+	}
+
+	/**
+	 * This will cause re-layouting of all components. Mainly used for
+	 * development. Published to JavaScript.
+	 */
+	public void forceLayout() {
+		Set<Paintable> set = new HashSet<Paintable>();
+		for (ComponentDetail cd : idToPaintableDetail.values()) {
+			set.add(cd.getComponent());
+		}
+		Util.componentSizeUpdated(set);
+	}
+
+	private void internalRunDescendentsLayout(HasWidgets container) {
+		// getConsole().log(
+		// "runDescendentsLayout(" + Util.getSimpleName(container) + ")");
+		final Iterator<Widget> childWidgets = container.iterator();
+		while (childWidgets.hasNext()) {
+			final Widget child = childWidgets.next();
+
+			if (child instanceof Paintable) {
+
+				if (handleComponentRelativeSize(child)) {
+					/*
+					 * Only need to propagate event if "child" has a relative
+					 * size
+					 */
+
+					if (child instanceof ContainerResizedListener) {
+						((ContainerResizedListener) child).iLayout();
+					}
+
+					if (child instanceof HasWidgets) {
+						final HasWidgets childContainer = (HasWidgets) child;
+						internalRunDescendentsLayout(childContainer);
+					}
+				}
+			} else if (child instanceof HasWidgets) {
+				// propagate over non Paintable HasWidgets
+				internalRunDescendentsLayout((HasWidgets) child);
+			}
+
+		}
+	}
+
+	/**
+	 * Converts relative sizes into pixel sizes.
+	 * 
+	 * @param child
+	 * @return true if the child has a relative size
+	 */
+	private boolean handleComponentRelativeSize(ComponentDetail cd) {
+		if (cd == null) {
+			return false;
+		}
+		boolean debugSizes = false;
+
+		FloatSize relativeSize = cd.getRelativeSize();
+		if (relativeSize == null) {
+			return false;
+		}
+		Widget widget = (Widget) cd.getComponent();
+
+		boolean horizontalScrollBar = false;
+		boolean verticalScrollBar = false;
+
+		Container parent = Util.getLayout(widget);
+		RenderSpace renderSpace;
+
+		// Parent-less components (like sub-windows) are relative to browser
+		// window.
+		if (parent == null) {
+			renderSpace = new RenderSpace(Window.getClientWidth(), Window
+					.getClientHeight());
+		} else {
+			renderSpace = parent.getAllocatedSpace(widget);
+		}
+
+		if (relativeSize.getHeight() >= 0) {
+			if (renderSpace != null) {
+
+				if (renderSpace.getScrollbarSize() > 0) {
+					if (relativeSize.getWidth() > 100) {
+						horizontalScrollBar = true;
+					} else if (relativeSize.getWidth() < 0
+							&& renderSpace.getWidth() > 0) {
+						int offsetWidth = widget.getOffsetWidth();
+						int width = renderSpace.getWidth();
+						if (offsetWidth > width) {
+							horizontalScrollBar = true;
+						}
+					}
+				}
+
+				int height = renderSpace.getHeight();
+				if (horizontalScrollBar) {
+					height -= renderSpace.getScrollbarSize();
+				}
+				if (validatingLayouts && height <= 0) {
+					zeroHeightComponents.add(cd.getComponent());
+				}
+
+				height = (int) (height * relativeSize.getHeight() / 100.0);
+
+				if (height < 0) {
+					height = 0;
+				}
+
+				if (debugSizes) {
+					getConsole()
+							.log(
+									"Widget "
+											+ Util.getSimpleName(widget)
+											+ "/"
+											+ getPid(widget.getElement())
+											+ " relative height "
+											+ relativeSize.getHeight()
+											+ "% of "
+											+ renderSpace.getHeight()
+											+ "px (reported by "
+
+											+ Util.getSimpleName(parent)
+											+ "/"
+											+ (parent == null ? "?" : parent
+													.hashCode()) + ") : "
+											+ height + "px");
+				}
+				widget.setHeight(height + "px");
+			} else {
+				widget.setHeight(relativeSize.getHeight() + "%");
+				ApplicationConnection.getConsole().error(
+						Util.getLayout(widget).getClass().getName()
+								+ " did not produce allocatedSpace for "
+								+ widget.getClass().getName());
+			}
+		}
+
+		if (relativeSize.getWidth() >= 0) {
+
+			if (renderSpace != null) {
+
+				int width = renderSpace.getWidth();
+
+				if (renderSpace.getScrollbarSize() > 0) {
+					if (relativeSize.getHeight() > 100) {
+						verticalScrollBar = true;
+					} else if (relativeSize.getHeight() < 0
+							&& renderSpace.getHeight() > 0
+							&& widget.getOffsetHeight() > renderSpace
+									.getHeight()) {
+						verticalScrollBar = true;
+					}
+				}
+
+				if (verticalScrollBar) {
+					width -= renderSpace.getScrollbarSize();
+				}
+				if (validatingLayouts && width <= 0) {
+					zeroWidthComponents.add(cd.getComponent());
+				}
+
+				width = (int) (width * relativeSize.getWidth() / 100.0);
+
+				if (width < 0) {
+					width = 0;
+				}
+
+				if (debugSizes) {
+					getConsole().log(
+							"Widget " + Util.getSimpleName(widget) + "/"
+									+ getPid(widget.getElement())
+									+ " relative width "
+									+ relativeSize.getWidth() + "% of "
+									+ renderSpace.getWidth()
+									+ "px (reported by "
+									+ Util.getSimpleName(parent) + "/"
+									+ (parent == null ? "?" : getPid(parent))
+									+ ") : " + width + "px");
+				}
+				widget.setWidth(width + "px");
+			} else {
+				widget.setWidth(relativeSize.getWidth() + "%");
+				ApplicationConnection.getConsole().error(
+						Util.getLayout(widget).getClass().getName()
+								+ " did not produce allocatedSpace for "
+								+ widget.getClass().getName());
+			}
+		}
+
+		return true;
+	}
+
+	/**
+	 * Converts relative sizes into pixel sizes.
+	 * 
+	 * @param child
+	 * @return true if the child has a relative size
+	 */
+	public boolean handleComponentRelativeSize(Widget child) {
+		return handleComponentRelativeSize(idToPaintableDetail.get(getPid(child
+				.getElement())));
+
+	}
+
+	public FloatSize getRelativeSize(Widget widget) {
+		return idToPaintableDetail.get(getPid(widget.getElement()))
+				.getRelativeSize();
+	}
+
+	/**
+	 * Get either existing or new Paintable for given UIDL.
+	 * 
+	 * If corresponding Paintable has been previously painted, return it.
+	 * Otherwise create and register a new Paintable from UIDL. Caller must
+	 * update the returned Paintable from UIDL after it has been connected to
+	 * parent.
+	 * 
+	 * @param uidl
+	 *            UIDL to create Paintable from.
+	 * @return Either existing or new Paintable corresponding to UIDL.
+	 */
+	public Paintable getPaintable(UIDL uidl) {
+		final String id = uidl.getId();
+		Paintable w = getPaintable(id);
+		if (w != null) {
+			return w;
+		} else {
+			w = widgetSet.createWidget(uidl, configuration);
+			registerPaintable(id, w);
+			return w;
+
+		}
+	}
+
+	/**
+	 * Returns a Paintable element by its root element
+	 * 
+	 * @param element
+	 *            Root element of the paintable
+	 */
+	public Paintable getPaintable(Element element) {
+		return getPaintable(getPid(element));
+	}
+
+	public String getResource(String name) {
+		return resourcesMap.get(name);
+	}
+
+	/**
+	 * Singleton method to get instance of app's context menu.
+	 * 
+	 * @return VContextMenu object
+	 */
+	public VContextMenu getContextMenu() {
+		if (contextMenu == null) {
+			contextMenu = new VContextMenu();
+			DOM.setElementProperty(contextMenu.getElement(), "id",
+					"PID_VAADIN_CM");
+		}
+		return contextMenu;
+	}
+
+	/**
+	 * Translates custom protocols in UIDL URI's to be recognizable by browser.
+	 * All uri's from UIDL should be routed via this method before giving them
+	 * to browser due URI's in UIDL may contain custom protocols like theme://.
+	 * 
+	 * @param uidlUri
+	 *            Vaadin URI from uidl
+	 * @return translated URI ready for browser
+	 */
+	public String translateVaadinUri(String uidlUri) {
+		if (uidlUri == null) {
+			return null;
+		}
+		if (uidlUri.startsWith("theme://")) {
+			final String themeUri = configuration.getThemeUri();
+			if (themeUri == null) {
+				console
+						.error("Theme not set: ThemeResource will not be found. ("
+								+ uidlUri + ")");
+			}
+			uidlUri = themeUri + uidlUri.substring(7);
+		}
+		return uidlUri;
+	}
+
+	public String getThemeUri() {
+		return configuration.getThemeUri();
+	}
+
+	/**
+	 * Listens for Notification hide event, and redirects. Used for system
+	 * messages, such as session expired.
+	 * 
+	 */
+	private class NotificationRedirect implements VNotification.EventListener {
+		String url;
+
+		NotificationRedirect(String url) {
+			this.url = url;
+		}
+
+		public void notificationHidden(HideEvent event) {
+			redirect(url);
+		}
+
+	}
+
+	/* Extended title handling */
+
+	/**
+	 * Data showed in tooltips are stored centrilized as it may be needed in
+	 * varios place: caption, layouts, and in owner components themselves.
+	 * 
+	 * Updating TooltipInfo is done in updateComponent method.
+	 * 
+	 */
+	public TooltipInfo getTooltipTitleInfo(Paintable titleOwner, Object key) {
+		if (null == titleOwner) {
+			return null;
+		}
+		ComponentDetail cd = idToPaintableDetail.get(getPid(titleOwner));
+		if (null != cd) {
+			return cd.getTooltipInfo(key);
+		} else {
+			return null;
+		}
+	}
+
+	private final VTooltip tooltip = new VTooltip(this);
+
+	/**
+	 * Component may want to delegate Tooltip handling to client. Layouts add
+	 * Tooltip (description, errors) to caption, but some components may want
+	 * them to appear one other elements too.
+	 * 
+	 * Events wanted by this handler are same as in Tooltip.TOOLTIP_EVENTS
+	 * 
+	 * @param event
+	 * @param owner
+	 */
+	public void handleTooltipEvent(Event event, Paintable owner) {
+		tooltip.handleTooltipEvent(event, owner, null);
+
+	}
+
+	/**
+	 * Component may want to delegate Tooltip handling to client. Layouts add
+	 * Tooltip (description, errors) to caption, but some components may want
+	 * them to appear one other elements too.
+	 * 
+	 * Events wanted by this handler are same as in Tooltip.TOOLTIP_EVENTS
+	 * 
+	 * @param event
+	 * @param owner
+	 * @param key
+	 *            the key for tooltip if this is "additional" tooltip, null for
+	 *            components "main tooltip"
+	 */
+	public void handleTooltipEvent(Event event, Paintable owner, Object key) {
+		tooltip.handleTooltipEvent(event, owner, key);
+
+	}
+
+	/**
+	 * Adds PNG-fix conditionally (only for IE6) to the specified IMG -element.
+	 * 
+	 * @param el
+	 *            the IMG element to fix
+	 */
+	public void addPngFix(Element el) {
+		BrowserInfo b = BrowserInfo.get();
+		if (b.isIE6()) {
+			Util.addPngFix(el, getThemeUri() + "/../runo/common/img/blank.gif");
+		}
+	}
+
+	/*
+	 * Helper to run layout functions triggered by child components with a
+	 * decent interval.
+	 */
+	private final Timer layoutTimer = new Timer() {
+
+		private boolean isPending = false;
+
+		@Override
+		public void schedule(int delayMillis) {
+			if (!isPending) {
+				super.schedule(delayMillis);
+				isPending = true;
+			}
+		}
+
+		@Override
+		public void run() {
+			getConsole().log(
+					"Running re-layout of " + view.getClass().getName());
+			runDescendentsLayout(view);
+			isPending = false;
+		}
+	};
+
+	/**
+	 * Components can call this function to run all layout functions. This is
+	 * usually done, when component knows that its size has changed.
+	 */
+	public void requestLayoutPhase() {
+		layoutTimer.schedule(500);
+	}
+
+	private String windowName = null;
+
+	/**
+	 * Reset the name of the current browser-window. This should reflect the
+	 * window-name used in the server, but might be different from the
+	 * window-object target-name on client.
+	 * 
+	 * @param stringAttribute
+	 *            New name for the window.
+	 */
+	public void setWindowName(String newName) {
+		windowName = newName;
+	}
+
+	public void captionSizeUpdated(Paintable component) {
+		componentCaptionSizeChanges.add(component);
+	}
+
+	public void analyzeLayouts() {
+		makeUidlRequest("", true, false, true);
+	}
+
+	public VView getView() {
+		return view;
+	}
+
+	/**
+	 * If component has several tooltips in addition to the one provided by
+	 * {@link com.vaadin.ui.AbstractComponent}, component can register them with
+	 * this method.
+	 * <p>
+	 * Component must also pipe events to
+	 * {@link #handleTooltipEvent(Event, Paintable, Object)} method.
+	 * <p>
+	 * This method can also be used to deregister tooltips by using null as
+	 * tooltip
+	 * 
+	 * @param paintable
+	 *            Paintable "owning" this tooltip
+	 * @param key
+	 *            key assosiated with given tooltip. Can be any object. For
+	 *            example a related dom element. Same key must be given for
+	 *            {@link #handleTooltipEvent(Event, Paintable, Object)} method.
+	 * 
+	 * @param tooltip
+	 *            the TooltipInfo object containing details shown in tooltip,
+	 *            null if deregistering tooltip
+	 */
+	public void registerTooltip(Paintable paintable, Object key,
+			TooltipInfo tooltip) {
+		ComponentDetail componentDetail = idToPaintableDetail
+				.get(getPid(paintable));
+		componentDetail.putAdditionalTooltip(key, tooltip);
+	}
+
+	public ApplicationConfiguration getConfiguration() {
+		return configuration;
+	}
 
 }