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- /*
- * Copyright 2011 Vaadin Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
-
- package com.vaadin.server;
-
- import java.io.Serializable;
- import java.lang.reflect.Method;
- import java.util.EventObject;
- import java.util.Iterator;
- import java.util.LinkedList;
- import java.util.List;
-
- import com.vaadin.event.EventRouter;
- import com.vaadin.server.WrappedRequest.BrowserDetails;
- import com.vaadin.shared.ui.BorderStyle;
- import com.vaadin.shared.ui.ui.PageClientRpc;
- import com.vaadin.shared.ui.ui.UIConstants;
- import com.vaadin.tools.ReflectTools;
- import com.vaadin.ui.JavaScript;
- import com.vaadin.ui.Notification;
- import com.vaadin.ui.UI;
-
- public class Page implements Serializable {
-
- /**
- * Listener that gets notified when the size of the browser window
- * containing the uI has changed.
- *
- * @see UI#addListener(BrowserWindowResizeListener)
- */
- public interface BrowserWindowResizeListener extends Serializable {
- /**
- * Invoked when the browser window containing a UI has been resized.
- *
- * @param event
- * a browser window resize event
- */
- public void browserWindowResized(BrowserWindowResizeEvent event);
- }
-
- /**
- * Event that is fired when a browser window containing a uI is resized.
- */
- public class BrowserWindowResizeEvent extends EventObject {
-
- private final int width;
- private final int height;
-
- /**
- * Creates a new event
- *
- * @param source
- * the uI for which the browser window has been resized
- * @param width
- * the new width of the browser window
- * @param height
- * the new height of the browser window
- */
- public BrowserWindowResizeEvent(Page source, int width, int height) {
- super(source);
- this.width = width;
- this.height = height;
- }
-
- @Override
- public Page getSource() {
- return (Page) super.getSource();
- }
-
- /**
- * Gets the new browser window height
- *
- * @return an integer with the new pixel height of the browser window
- */
- public int getHeight() {
- return height;
- }
-
- /**
- * Gets the new browser window width
- *
- * @return an integer with the new pixel width of the browser window
- */
- public int getWidth() {
- return width;
- }
- }
-
- /**
- * Private class for storing properties related to opening resources.
- */
- private class OpenResource implements Serializable {
-
- /**
- * The resource to open
- */
- private final Resource resource;
-
- /**
- * The name of the target window
- */
- private final String name;
-
- /**
- * The width of the target window
- */
- private final int width;
-
- /**
- * The height of the target window
- */
- private final int height;
-
- /**
- * The border style of the target window
- */
- private final BorderStyle border;
-
- /**
- * Creates a new open resource.
- *
- * @param resource
- * The resource to open
- * @param name
- * The name of the target window
- * @param width
- * The width of the target window
- * @param height
- * The height of the target window
- * @param border
- * The border style of the target window
- */
- private OpenResource(Resource resource, String name, int width,
- int height, BorderStyle border) {
- this.resource = resource;
- this.name = name;
- this.width = width;
- this.height = height;
- this.border = border;
- }
-
- /**
- * Paints the open request. Should be painted inside the window.
- *
- * @param target
- * the paint target
- * @throws PaintException
- * if the paint operation fails
- */
- private void paintContent(PaintTarget target) throws PaintException {
- target.startTag("open");
- target.addAttribute("src", resource);
- if (name != null && name.length() > 0) {
- target.addAttribute("name", name);
- }
- if (width >= 0) {
- target.addAttribute("width", width);
- }
- if (height >= 0) {
- target.addAttribute("height", height);
- }
- switch (border) {
- case MINIMAL:
- target.addAttribute("border", "minimal");
- break;
- case NONE:
- target.addAttribute("border", "none");
- break;
- }
-
- target.endTag("open");
- }
- }
-
- private static final Method BROWSWER_RESIZE_METHOD = ReflectTools
- .findMethod(BrowserWindowResizeListener.class,
- "browserWindowResized", BrowserWindowResizeEvent.class);
-
- /**
- * A border style used for opening resources in a window without a border.
- */
- @Deprecated
- public static final BorderStyle BORDER_NONE = BorderStyle.NONE;
-
- /**
- * A border style used for opening resources in a window with a minimal
- * border.
- */
- public static final BorderStyle BORDER_MINIMAL = BorderStyle.MINIMAL;
-
- /**
- * A border style that indicates that the default border style should be
- * used when opening resources.
- */
- public static final BorderStyle BORDER_DEFAULT = BorderStyle.DEFAULT;
-
- /**
- * Listener that listens changes in URI fragment.
- */
- public interface FragmentChangedListener extends Serializable {
- public void fragmentChanged(FragmentChangedEvent event);
- }
-
- private static final Method FRAGMENT_CHANGED_METHOD = ReflectTools
- .findMethod(Page.FragmentChangedListener.class, "fragmentChanged",
- FragmentChangedEvent.class);
-
- /**
- * Resources to be opened automatically on next repaint. The list is
- * automatically cleared when it has been sent to the client.
- */
- private final LinkedList<OpenResource> openList = new LinkedList<OpenResource>();
-
- /**
- * A list of notifications that are waiting to be sent to the client.
- * Cleared (set to null) when the notifications have been sent.
- */
- private List<Notification> notifications;
-
- /**
- * Event fired when uri fragment changes.
- */
- public class FragmentChangedEvent extends EventObject {
-
- /**
- * The new uri fragment
- */
- private final String fragment;
-
- /**
- * Creates a new instance of UriFragmentReader change event.
- *
- * @param source
- * the Source of the event.
- */
- public FragmentChangedEvent(Page source, String fragment) {
- super(source);
- this.fragment = fragment;
- }
-
- /**
- * Gets the uI in which the fragment has changed.
- *
- * @return the uI in which the fragment has changed
- */
- public Page getPage() {
- return (Page) getSource();
- }
-
- /**
- * Get the new fragment
- *
- * @return the new fragment
- */
- public String getFragment() {
- return fragment;
- }
- }
-
- private EventRouter eventRouter;
-
- /**
- * The current URI fragment.
- */
- private String fragment;
-
- private final UI uI;
-
- private int browserWindowWidth = -1;
- private int browserWindowHeight = -1;
-
- private JavaScript javaScript;
-
- public Page(UI uI) {
- this.uI = uI;
- }
-
- private void addListener(Class<?> eventType, Object target, Method method) {
- if (eventRouter == null) {
- eventRouter = new EventRouter();
- }
- eventRouter.addListener(eventType, target, method);
- }
-
- private void removeListener(Class<?> eventType, Object target, Method method) {
- if (eventRouter != null) {
- eventRouter.removeListener(eventType, target, method);
- }
- }
-
- public void addListener(Page.FragmentChangedListener listener) {
- addListener(FragmentChangedEvent.class, listener,
- FRAGMENT_CHANGED_METHOD);
- }
-
- public void removeListener(Page.FragmentChangedListener listener) {
- removeListener(FragmentChangedEvent.class, listener,
- FRAGMENT_CHANGED_METHOD);
- }
-
- /**
- * Sets URI fragment. Optionally fires a {@link FragmentChangedEvent}
- *
- * @param newFragment
- * id of the new fragment
- * @param fireEvent
- * true to fire event
- * @see FragmentChangedEvent
- * @see Page.FragmentChangedListener
- */
- public void setFragment(String newFragment, boolean fireEvents) {
- if (newFragment == null) {
- throw new NullPointerException("The fragment may not be null");
- }
- if (!newFragment.equals(fragment)) {
- fragment = newFragment;
- if (fireEvents) {
- fireEvent(new FragmentChangedEvent(this, newFragment));
- }
- uI.markAsDirty();
- }
- }
-
- private void fireEvent(EventObject event) {
- if (eventRouter != null) {
- eventRouter.fireEvent(event);
- }
- }
-
- /**
- * Sets URI fragment. This method fires a {@link FragmentChangedEvent}
- *
- * @param newFragment
- * id of the new fragment
- * @see FragmentChangedEvent
- * @see Page.FragmentChangedListener
- */
- public void setFragment(String newFragment) {
- setFragment(newFragment, true);
- }
-
- /**
- * Gets currently set URI fragment.
- * <p>
- * To listen changes in fragment, hook a
- * {@link Page.FragmentChangedListener}.
- *
- * @return the current fragment in browser uri or null if not known
- */
- public String getFragment() {
- return fragment;
- }
-
- public void init(WrappedRequest request) {
- BrowserDetails browserDetails = request.getBrowserDetails();
- if (browserDetails != null) {
- fragment = browserDetails.getUriFragment();
- }
- }
-
- public WebBrowser getWebBrowser() {
- return ((WebApplicationContext) uI.getApplication().getContext())
- .getBrowser();
- }
-
- public void setBrowserWindowSize(int width, int height) {
- boolean fireEvent = false;
-
- if (width != browserWindowWidth) {
- browserWindowWidth = width;
- fireEvent = true;
- }
-
- if (height != browserWindowHeight) {
- browserWindowHeight = height;
- fireEvent = true;
- }
-
- if (fireEvent) {
- fireEvent(new BrowserWindowResizeEvent(this, browserWindowWidth,
- browserWindowHeight));
- }
-
- }
-
- /**
- * Adds a new {@link BrowserWindowResizeListener} to this uI. The listener
- * will be notified whenever the browser window within which this uI
- * resides is resized.
- *
- * @param resizeListener
- * the listener to add
- *
- * @see BrowserWindowResizeListener#browserWindowResized(BrowserWindowResizeEvent)
- * @see #setResizeLazy(boolean)
- */
- public void addListener(BrowserWindowResizeListener resizeListener) {
- addListener(BrowserWindowResizeEvent.class, resizeListener,
- BROWSWER_RESIZE_METHOD);
- }
-
- /**
- * Removes a {@link BrowserWindowResizeListener} from this uI. The
- * listener will no longer be notified when the browser window is resized.
- *
- * @param resizeListener
- * the listener to remove
- */
- public void removeListener(BrowserWindowResizeListener resizeListener) {
- removeListener(BrowserWindowResizeEvent.class, resizeListener,
- BROWSWER_RESIZE_METHOD);
- }
-
- /**
- * Gets the last known height of the browser window in which this uI
- * resides.
- *
- * @return the browser window height in pixels
- */
- public int getBrowserWindowHeight() {
- return browserWindowHeight;
- }
-
- /**
- * Gets the last known width of the browser window in which this uI
- * resides.
- *
- * @return the browser window width in pixels
- */
- public int getBrowserWindowWidth() {
- return browserWindowWidth;
- }
-
- public JavaScript getJavaScript() {
- if (javaScript == null) {
- // Create and attach on first use
- javaScript = new JavaScript();
- javaScript.extend(uI);
- }
-
- return javaScript;
- }
-
- public void paintContent(PaintTarget target) throws PaintException {
- if (!openList.isEmpty()) {
- for (final Iterator<OpenResource> i = openList.iterator(); i
- .hasNext();) {
- (i.next()).paintContent(target);
- }
- openList.clear();
- }
-
- // Paint notifications
- if (notifications != null) {
- target.startTag("notifications");
- for (final Iterator<Notification> it = notifications.iterator(); it
- .hasNext();) {
- final Notification n = it.next();
- target.startTag("notification");
- if (n.getCaption() != null) {
- target.addAttribute(
- UIConstants.ATTRIBUTE_NOTIFICATION_CAPTION,
- n.getCaption());
- }
- if (n.getDescription() != null) {
- target.addAttribute(
- UIConstants.ATTRIBUTE_NOTIFICATION_MESSAGE,
- n.getDescription());
- }
- if (n.getIcon() != null) {
- target.addAttribute(
- UIConstants.ATTRIBUTE_NOTIFICATION_ICON,
- n.getIcon());
- }
- if (!n.isHtmlContentAllowed()) {
- target.addAttribute(
- UIConstants.NOTIFICATION_HTML_CONTENT_NOT_ALLOWED,
- true);
- }
- target.addAttribute(
- UIConstants.ATTRIBUTE_NOTIFICATION_POSITION, n
- .getPosition().ordinal());
- target.addAttribute(UIConstants.ATTRIBUTE_NOTIFICATION_DELAY,
- n.getDelayMsec());
- if (n.getStyleName() != null) {
- target.addAttribute(
- UIConstants.ATTRIBUTE_NOTIFICATION_STYLE,
- n.getStyleName());
- }
- target.endTag("notification");
- }
- target.endTag("notifications");
- notifications = null;
- }
-
- if (fragment != null) {
- target.addAttribute(UIConstants.FRAGMENT_VARIABLE, fragment);
- }
-
- }
-
- /**
- * Opens the given resource in this uI. The contents of this UI is
- * replaced by the {@code Resource}.
- *
- * @param resource
- * the resource to show in this uI
- */
- public void open(Resource resource) {
- openList.add(new OpenResource(resource, null, -1, -1, BORDER_DEFAULT));
- uI.markAsDirty();
- }
-
- /**
- * Opens the given resource in a window with the given name.
- * <p>
- * The supplied {@code windowName} is used as the target name in a
- * window.open call in the client. This means that special values such as
- * "_blank", "_self", "_top", "_parent" have special meaning. An empty or
- * <code>null</code> window name is also a special case.
- * </p>
- * <p>
- * "", null and "_self" as {@code windowName} all causes the resource to be
- * opened in the current window, replacing any old contents. For
- * downloadable content you should avoid "_self" as "_self" causes the
- * client to skip rendering of any other changes as it considers them
- * irrelevant (the page will be replaced by the resource). This can speed up
- * the opening of a resource, but it might also put the client side into an
- * inconsistent state if the window content is not completely replaced e.g.,
- * if the resource is downloaded instead of displayed in the browser.
- * </p>
- * <p>
- * "_blank" as {@code windowName} causes the resource to always be opened in
- * a new window or tab (depends on the browser and browser settings).
- * </p>
- * <p>
- * "_top" and "_parent" as {@code windowName} works as specified by the HTML
- * standard.
- * </p>
- * <p>
- * Any other {@code windowName} will open the resource in a window with that
- * name, either by opening a new window/tab in the browser or by replacing
- * the contents of an existing window with that name.
- * </p>
- *
- * @param resource
- * the resource.
- * @param windowName
- * the name of the window.
- */
- public void open(Resource resource, String windowName) {
- openList.add(new OpenResource(resource, windowName, -1, -1,
- BORDER_DEFAULT));
- uI.markAsDirty();
- }
-
- /**
- * Opens the given resource in a window with the given size, border and
- * name. For more information on the meaning of {@code windowName}, see
- * {@link #open(Resource, String)}.
- *
- * @param resource
- * the resource.
- * @param windowName
- * the name of the window.
- * @param width
- * the width of the window in pixels
- * @param height
- * the height of the window in pixels
- * @param border
- * the border style of the window.
- */
- public void open(Resource resource, String windowName, int width,
- int height, BorderStyle border) {
- openList.add(new OpenResource(resource, windowName, width, height,
- border));
- uI.markAsDirty();
- }
-
- /**
- * Internal helper method to actually add a notification.
- *
- * @param notification
- * the notification to add
- */
- private void addNotification(Notification notification) {
- if (notifications == null) {
- notifications = new LinkedList<Notification>();
- }
- notifications.add(notification);
- uI.markAsDirty();
- }
-
- /**
- * Shows a notification message.
- *
- * @see Notification
- *
- * @param notification
- * The notification message to show
- *
- * @deprecated Use Notification.show(Page) instead.
- */
- @Deprecated
- public void showNotification(Notification notification) {
- addNotification(notification);
- }
-
- /**
- * Gets the Page to which the current uI belongs. This is automatically
- * defined when processing requests to the server. In other cases, (e.g.
- * from background threads), the current uI is not automatically defined.
- *
- * @see UI#getCurrent()
- *
- * @return the current page instance if available, otherwise
- * <code>null</code>
- */
- public static Page getCurrent() {
- UI currentUI = UI.getCurrent();
- if (currentUI == null) {
- return null;
- }
- return currentUI.getPage();
- }
-
- /**
- * Sets the page title. The page title is displayed by the browser e.g. as
- * the title of the browser window or as the title of the tab.
- *
- * @param title
- * the new page title to set
- */
- public void setTitle(String title) {
- uI.getRpcProxy(PageClientRpc.class).setTitle(title);
- }
-
- }
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