Examples of org.eclipse.swt.events.HelpListener

org.eclipse.swt.events.HelpListener
Classes which implement this interface provide a method that deals with the event that is generated when help is requested for a control, typically when the user presses F1.
After creating an instance of a class that implements this interface it can be added to a control using the addHelpListener method and removed using the removeHelpListener method. When help is requested for a control, the helpRequested method will be invoked.
@see HelpEvent

        });


        /*
         * Trap F1 Help to pop up a custom help box
         */
        control.addHelpListener(new HelpListener() {
            public void helpRequested(HelpEvent event) {
                if (tipWidget == null)
                    return;
                ToolTipHelpTextHandler handler = (ToolTipHelpTextHandler) tipWidget.getData("TIP_HELPTEXTHANDLER");
                if (handler == null)

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    protected static final void attachHelp( final Control control, final Property property )
    {
        final SapphireHelpContext context = new SapphireHelpContext( property.element(), property.definition() );
        if( context.getText() != null || ( context.getRelatedTopics() != null && context.getRelatedTopics().length > 0 ) )
        {
            control.addHelpListener( new HelpListener()
            {
                public void helpRequested( HelpEvent event )
                {
                    // determine a location in the upper right corner of the
                    // widget

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        helpListeners.add(listener);
        if (!helpHooked) {
            Control control = getControl();
            if (control != null && !control.isDisposed()) {
                if (this.helpListener == null) {
                    this.helpListener = new HelpListener() {
                        public void helpRequested(HelpEvent event) {
                            handleHelpRequest(event);
                        }
                    };
                }

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   * (non-Javadoc) Method declared on Window.
   */
  protected void configureShell(Shell newShell) {
    super.configureShell(newShell);
    // Register help listener on the shell
    newShell.addHelpListener(new HelpListener() {
      public void helpRequested(HelpEvent event) {
        // call perform help on the current page
        if (currentPage != null) {
          currentPage.performHelp();
        }

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        boolean expanded = viewer.getExpandedState(singleSelection);
        viewer.setExpandedState(singleSelection, !expanded);
      }
    });
    //Register help listener on the tree to use context sensitive help
    viewer.getControl().addHelpListener(new HelpListener() {
      public void helpRequested(HelpEvent event) {
        // call perform help on the current page
        if (currentPage != null) {
          currentPage.performHelp();
        }

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