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- /*
- @VaadinApache2LicenseForJavaFiles@
- */
- package com.vaadin.terminal.gwt.client.ui;
-
- import java.util.Set;
-
- import com.google.gwt.user.client.ui.Focusable;
- import com.google.gwt.user.client.ui.HasEnabled;
- import com.google.gwt.user.client.ui.Widget;
- import com.vaadin.terminal.gwt.client.ApplicationConnection;
- import com.vaadin.terminal.gwt.client.ComponentConnector;
- import com.vaadin.terminal.gwt.client.ComponentContainerConnector;
- import com.vaadin.terminal.gwt.client.ComponentState;
- import com.vaadin.terminal.gwt.client.ConnectorMap;
- import com.vaadin.terminal.gwt.client.LayoutManager;
- import com.vaadin.terminal.gwt.client.TooltipInfo;
- import com.vaadin.terminal.gwt.client.UIDL;
- import com.vaadin.terminal.gwt.client.Util;
- import com.vaadin.terminal.gwt.client.VConsole;
- import com.vaadin.terminal.gwt.client.communication.SharedState;
- import com.vaadin.terminal.gwt.client.communication.StateChangeEvent;
- import com.vaadin.terminal.gwt.client.ui.root.RootConnector;
-
- public abstract class AbstractComponentConnector extends AbstractConnector
- implements ComponentConnector {
-
- private ComponentContainerConnector parent;
-
- private Widget widget;
-
- // shared state from the server to the client
- private ComponentState state;
-
- private String lastKnownWidth = "";
- private String lastKnownHeight = "";
-
- /**
- * Default constructor
- */
- public AbstractComponentConnector() {
- }
-
- /**
- * Creates and returns the widget for this VPaintableWidget. This method
- * should only be called once when initializing the paintable.
- *
- * @return
- */
- protected abstract Widget createWidget();
-
- /**
- * Returns the widget associated with this paintable. The widget returned by
- * this method must not changed during the life time of the paintable.
- *
- * @return The widget associated with this paintable
- */
- public Widget getWidget() {
- if (widget == null) {
- widget = createWidget();
- }
-
- return widget;
- }
-
- /**
- * Returns the shared state object for this connector.
- *
- * If overriding this method to return a more specific type, also
- * {@link #createState()} must be overridden.
- *
- * @return current shared state (not null)
- */
- public ComponentState getState() {
- return state;
- }
-
- @Deprecated
- public static boolean isRealUpdate(UIDL uidl) {
- return !uidl.hasAttribute("cached");
- }
-
- @Override
- public void onStateChanged(StateChangeEvent stateChangeEvent) {
- super.onStateChanged(stateChangeEvent);
-
- ConnectorMap paintableMap = ConnectorMap.get(getConnection());
-
- if (getState().getDebugId() != null) {
- getWidget().getElement().setId(getState().getDebugId());
- } else {
- getWidget().getElement().removeAttribute("id");
-
- }
-
- setWidgetEnabled(isEnabled());
- /*
- * Disabled state may affect (override) tabindex so the order must be
- * first setting tabindex, then enabled state.
- */
- if (state instanceof TabIndexState && getWidget() instanceof Focusable) {
- ((Focusable) getWidget()).setTabIndex(((TabIndexState) state)
- .getTabIndex());
- }
-
- // Style names
- String styleName = getStyleNames(getWidget().getStylePrimaryName());
- getWidget().setStyleName(styleName);
-
- // Update tooltip
- TooltipInfo tooltipInfo = paintableMap.getTooltipInfo(this, null);
- if (getState().hasDescription()) {
- tooltipInfo.setTitle(getState().getDescription());
- } else {
- tooltipInfo.setTitle(null);
- }
- // add error info to tooltip if present
- tooltipInfo.setErrorMessage(getState().getErrorMessage());
-
- // Set captions
- if (delegateCaptionHandling()) {
- ComponentContainerConnector parent = getParent();
- if (parent != null) {
- parent.updateCaption(this);
- } else if (!(this instanceof RootConnector)) {
- VConsole.error("Parent of connector "
- + Util.getConnectorString(this)
- + " is null. This is typically an indication of a broken component hierarchy");
- }
- }
-
- /*
- * updateComponentSize need to be after caption update so caption can be
- * taken into account
- */
-
- updateComponentSize();
- }
-
- public void setWidgetEnabled(boolean widgetEnabled) {
- if (getWidget() instanceof HasEnabled) {
- HasEnabled hasEnabled = (HasEnabled) getWidget();
- if (hasEnabled.isEnabled() != widgetEnabled) {
- hasEnabled.setEnabled(widgetEnabled);
- }
- }
- }
-
- private void updateComponentSize() {
- String newWidth = getState().getWidth();
- String newHeight = getState().getHeight();
-
- // Parent should be updated if either dimension changed between relative
- // and non-relative
- if (newWidth.endsWith("%") != lastKnownWidth.endsWith("%")) {
- ComponentContainerConnector parent = getParent();
- if (parent instanceof ManagedLayout) {
- getLayoutManager().setNeedsHorizontalLayout(
- (ManagedLayout) parent);
- }
- }
-
- if (newHeight.endsWith("%") != lastKnownHeight.endsWith("%")) {
- ComponentContainerConnector parent = getParent();
- if (parent instanceof ManagedLayout) {
- getLayoutManager().setNeedsVerticalLayout(
- (ManagedLayout) parent);
- }
- }
-
- lastKnownWidth = newWidth;
- lastKnownHeight = newHeight;
-
- // Set defined sizes
- Widget widget = getWidget();
-
- widget.setStyleName("v-has-width", !isUndefinedWidth());
- widget.setStyleName("v-has-height", !isUndefinedHeight());
-
- widget.setHeight(newHeight);
- widget.setWidth(newWidth);
- }
-
- public boolean isRelativeHeight() {
- return getState().getHeight().endsWith("%");
- }
-
- public boolean isRelativeWidth() {
- return getState().getWidth().endsWith("%");
- }
-
- public boolean isUndefinedHeight() {
- return getState().getHeight().length() == 0;
- }
-
- public boolean isUndefinedWidth() {
- return getState().getWidth().length() == 0;
- }
-
- /*
- * (non-Javadoc)
- *
- * @see com.vaadin.terminal.gwt.client.Connector#isEnabled()
- */
- public boolean isEnabled() {
- if (!getState().isEnabled()) {
- return false;
- }
-
- if (getParent() == null) {
- return true;
- } else {
- return getParent().isEnabled();
- }
- }
-
- /*
- * (non-Javadoc)
- *
- * @see
- * com.vaadin.terminal.gwt.client.ComponentConnector#delegateCaptionHandling
- * ()
- */
- public boolean delegateCaptionHandling() {
- return true;
- }
-
- /**
- * Generates the style name for the widget based on the given primary style
- * name and the shared state.
- * <p>
- * This method can be overridden to provide additional style names for the
- * component
- * </p>
- *
- * @param primaryStyleName
- * The primary style name to use when generating the final style
- * names
- * @return The style names, settable using
- * {@link Widget#setStyleName(String)}
- */
- protected String getStyleNames(String primaryStyleName) {
- ComponentState state = getState();
-
- StringBuilder styleBuf = new StringBuilder();
- styleBuf.append(primaryStyleName);
- styleBuf.append(" v-connector");
-
- // Uses connector methods to enable connectors to take hierarchy or
- // multiple state variables into account
- if (!isEnabled()) {
- styleBuf.append(" ");
- styleBuf.append(ApplicationConnection.DISABLED_CLASSNAME);
- }
- if (isReadOnly()) {
- styleBuf.append(" ");
- styleBuf.append("v-readonly");
- }
-
- // add additional styles as css classes, prefixed with component default
- // stylename
- if (state.hasStyles()) {
- for (String style : state.getStyles()) {
- styleBuf.append(" ");
- styleBuf.append(primaryStyleName);
- styleBuf.append("-");
- styleBuf.append(style);
- styleBuf.append(" ");
- styleBuf.append(style);
- }
- }
-
- // add error classname to components w/ error
- if (null != state.getErrorMessage()) {
- styleBuf.append(" ");
- styleBuf.append(primaryStyleName);
- styleBuf.append(ApplicationConnection.ERROR_CLASSNAME_EXT);
- }
-
- return styleBuf.toString();
- }
-
- /*
- * (non-Javadoc)
- *
- * @see com.vaadin.terminal.gwt.client.ComponentConnector#isReadOnly()
- */
- @Deprecated
- public boolean isReadOnly() {
- return getState().isReadOnly();
- }
-
- /**
- * Sets the shared state for the paintable widget.
- *
- * @param new shared state (must be compatible with the return value of
- * {@link #getState()} - {@link ComponentState} if
- * {@link #getState()} is not overridden
- */
- public final void setState(SharedState state) {
- this.state = (ComponentState) state;
- }
-
- public LayoutManager getLayoutManager() {
- return LayoutManager.get(getConnection());
- }
-
- /*
- * (non-Javadoc)
- *
- * @see com.vaadin.terminal.gwt.client.Connector#getParent()
- */
- public ComponentContainerConnector getParent() {
- return parent;
- }
-
- /*
- * (non-Javadoc)
- *
- * @see
- * com.vaadin.terminal.gwt.client.Connector#setParent(com.vaadin.terminal
- * .gwt.client.ComponentContainerConnector)
- */
- public void setParent(ComponentContainerConnector parent) {
- this.parent = parent;
- }
-
- /**
- * Checks if there is a registered server side listener for the given event
- * identifier.
- *
- * @param eventIdentifier
- * The identifier to check for
- * @return true if an event listener has been registered with the given
- * event identifier on the server side, false otherwise
- */
- public boolean hasEventListener(String eventIdentifier) {
- Set<String> reg = getState().getRegisteredEventListeners();
- return (reg != null && reg.contains(eventIdentifier));
- }
-
- @Override
- public void onUnregister() {
- super.onUnregister();
-
- // Show an error if widget is still attached to DOM. It should never be
- // at this point.
- if (getWidget() != null && getWidget().isAttached()) {
- getWidget().removeFromParent();
- VConsole.error("Widget is still attached to the DOM after the connector ("
- + Util.getConnectorString(this)
- + ") has been unregistered. Widget was removed.");
- }
- }
- }
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