Examples of org.eclipse.swt.widgets.Listener

org.eclipse.swt.widgets.Listener
Implementers of Listener provide a simple handleEvent() method that is used internally by SWT to dispatch events.
After creating an instance of a class that implements this interface it can be added to a widget using the addListener(int eventType, Listener handler) method and removed using the removeListener (int eventType, Listener handler) method. When the specified event occurs, handleEvent(...) will be sent to the instance.

Classes which implement this interface are described within SWT as providing the untyped listener API. Typically, widgets will also provide a higher-level typed listener API, that is based on the standard java.util.EventListener pattern.

Note that, since all internal SWT event dispatching is based on untyped listeners, it is simple to build subsets of SWT for use on memory constrained, small footprint devices, by removing the classes and methods which implement the typed listener API.
@see Widget#addListener @see java.util.EventListener @see org.eclipse.swt.events

    final Label label = new Label(cMode, SWT.WRAP);
    gridData.horizontalSpan = 4;
    label.setLayoutData(gridData);
  text[0] = MessageText.getString("ConfigView.section.mode." + initsMode);
  label.setText(text[0]);
  label.addListener (SWT.Selection, new Listener () {
    public void handleEvent(Event event) {
      Utils.launch(event.text);
    }
  });
  
  Group gWiki = new Group(cMode, SWT.WRAP);
    gridData = new GridData();
    gridData.widthHint = 350;
    gWiki.setLayoutData(gridData);
    layout = new GridLayout();
    layout.numColumns = 1;
    layout.marginHeight = 1;
    gWiki.setLayout(layout);
    
    gWiki.setText(MessageText.getString("Utils.link.visit"));


      final Label linkLabel = new Label(gWiki, SWT.NULL);
      linkLabel.setText( MessageText.getString( messTexts[userMode] ) );
      linkLabel.setData( links[userMode] );
      linkLabel.setCursor(linkLabel.getDisplay().getSystemCursor(SWT.CURSOR_HAND));
      linkLabel.setForeground(Colors.blue);
      gridData = new GridData(GridData.FILL_HORIZONTAL);
      gridData.horizontalIndent = 10;
      linkLabel.setLayoutData( gridData );
      linkLabel.addMouseListener(new MouseAdapter() {
        public void mouseDoubleClick(MouseEvent arg0) {
          Utils.launch((String) ((Label) arg0.widget).getData());
        }
        public void mouseUp(MouseEvent arg0) {
          Utils.launch((String) ((Label) arg0.widget).getData());
        }
      });
      
      final Label linkLabel1 = new Label(gWiki, SWT.NULL);
      linkLabel1.setText( (userMode == 1)?MessageText.getString(messTexts[3]):"");
      linkLabel1.setData( links[3] );
      linkLabel1.setCursor(linkLabel1.getDisplay().getSystemCursor(SWT.CURSOR_HAND));
      linkLabel1.setForeground(Colors.blue);
      gridData = new GridData(GridData.FILL_HORIZONTAL);
      gridData.horizontalIndent = 10;
      linkLabel1.setLayoutData( gridData );
      linkLabel1.addMouseListener(new MouseAdapter() {
        public void mouseDoubleClick(MouseEvent arg0) {
          Utils.launch((String) ((Label) arg0.widget).getData());
        }
        public void mouseUp(MouseEvent arg0) {
          Utils.launch((String) ((Label) arg0.widget).getData());
        }
      });


    
    Listener radioGroup = new Listener () {
      public void handleEvent (Event event) {
        
        Control [] children = gRadio.getChildren ();
        
        for (int j=0; j<children.length; j++) {
           Control child = children [j];
           if (child instanceof Button) {
             Button button = (Button) child;
             if ((button.getStyle () & SWT.RADIO) != 0) button.setSelection (false);
           }
        }


        Button button = (Button) event.widget;
        button.setSelection (true);
        int mode = Integer.parseInt((String)button.getData("iMode"));
        text[0] = MessageText.getString("ConfigView.section.mode." + (String)button.getData("sMode"));
        label.setText(text[0]);
        linkLabel.setText( MessageText.getString(messTexts[mode]) );
        linkLabel.setData( links[mode] );
        if(mode == 1){
          linkLabel1.setText( MessageText.getString(messTexts[3]) );
          linkLabel1.setData( links[3] );
        } else{
          linkLabel1.setText( "" );
          linkLabel1.setData( "" );
        }
        COConfigurationManager.setParameter("User Mode", Integer.parseInt((String)button.getData("iMode")));
        }
    };
    
    button0.addListener (SWT.Selection, radioGroup);
    button1.addListener (SWT.Selection, radioGroup);
    button2.addListener (SWT.Selection, radioGroup);


    Label padding = new Label(cMode, SWT.NULL );
    gridData = new GridData();
    gridData.horizontalSpan = 3;
    padding.setLayoutData( gridData );
    
      // reset to defaults
    
  Composite gReset = new Composite(cMode, SWT.WRAP);
    gridData = new GridData();
    gridData.horizontalSpan = 4;
    gReset.setLayoutData(gridData);
    layout = new GridLayout();
    layout.numColumns = 3;
    gReset.setLayout(layout);


    Label reset_label = new Label(gReset, SWT.NULL );
    Messages.setLanguageText(reset_label, "ConfigView.section.mode.resetdefaults" );
    
    Button reset_button = new Button(gReset, SWT.PUSH);


    Messages.setLanguageText(reset_button, "Button.reset" );


    reset_button.addListener(SWT.Selection, 
    new Listener() 
    {
          public void 
      handleEvent(Event event) 
          {
            MessageBoxShell mb = new MessageBoxShell(

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    configList = new Combo(panel,SWT.READ_ONLY);
    gridData = new GridData(GridData.FILL_HORIZONTAL);
    gridData.horizontalSpan = 3;
    configList.setLayoutData(gridData);
    configList.addListener(SWT.Selection,new Listener() {
      public void handleEvent(Event e) {                
        updateWebSeeds();
        refreshDetails();
      }
    });
           
    btnNew = new Button(panel, SWT.PUSH);   
    Messages.setLanguageText(btnNew, "wizard.multitracker.new");
    gridData = new GridData();
    gridData.widthHint = 100;
    btnNew.setLayoutData(gridData);
    btnNew.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event e) {
      Map webseeds = new HashMap();
         webseeds.put( "getright", new ArrayList());
         webseeds.put( "webseed", new ArrayList());
        new WebSeedsEditor(null,webseeds,WebSeedPanel.this);
      }
    });
    
    btnEdit = new Button(panel, SWT.PUSH);   
    Messages.setLanguageText(btnEdit, "wizard.multitracker.edit");
    gridData = new GridData();
    gridData.widthHint = 100;
    btnEdit.setLayoutData(gridData);
    btnEdit.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event e) {
        int selection = configList.getSelectionIndex();
        String selected = configList.getItem(selection);
        Map webseeds = TrackersUtil.getInstance().getWebSeeds();
        new WebSeedsEditor(selected,(Map)webseeds.get(selected),WebSeedPanel.this);
      }
    });
    
    btnDelete = new Button(panel, SWT.PUSH);   
    Messages.setLanguageText(btnDelete, "wizard.multitracker.delete");
    gridData = new GridData(GridData.HORIZONTAL_ALIGN_END);
    gridData.widthHint = 100;    
    btnDelete.setLayoutData(gridData);
    btnDelete.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event e) {
        int selection = configList.getSelectionIndex();
        String selected = configList.getItem(selection);
        TrackersUtil.getInstance().removeWebSeed(selected);
        refreshList("");

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    file.setText(((NewTorrentWizard) wizard).singlePath);
    GridData gridData = new GridData(GridData.FILL_HORIZONTAL);
    file.setLayoutData(gridData);
    
    Button browse = new Button(panel, SWT.PUSH);
    browse.addListener(SWT.Selection, new Listener() {
      /*
       * (non-Javadoc)
       * 
       * @see org.eclipse.swt.widgets.Listener#handleEvent(org.eclipse.swt.widgets.Event)
       */

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        list.add(labels[i]);
      }
      
      setIndex(index);
      
      list.addListener(SWT.Selection, new Listener() {
           public void handleEvent(Event e) {
             setIndex(list.getSelectionIndex());
           }
         });

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          }
          menuItem.setSelection(selection_value.booleanValue());
        }
      }
      
      final Listener main_listener = controller.makeSelectionListener(az_menuitem);
      menuItem.addListener(SWT.Selection, new Listener() {
        public void handleEvent(Event e) {
          if (az_menuitem.getStyle() == MenuItem.STYLE_CHECK
              || az_menuitem.getStyle() == MenuItem.STYLE_RADIO) {
            if (!menuItem.isDisposed()) {
              az_menuitem.setData(new Boolean(menuItem.getSelection()));
            }
          }
          main_listener.handleEvent(e);
        }
      });
      
      if (is_container) {
        Menu this_menu = new Menu(composite.getShell(), SWT.DROP_DOWN);

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      this.objects = o;
    }


    public Listener makeSelectionListener(MenuItem menu_item) {
      final MenuItemImpl mii = (MenuItemImpl) menu_item;
      return new Listener() {
        public void handleEvent(Event e) {
          mii.invokeListenersMulti(objects);
        }
      };
    }

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    label = new Label(shell,SWT.WRAP);
    
    combo = new Combo(shell,SWT.READ_ONLY);
    
    Button ok = new Button(shell,SWT.PUSH);
    ok.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event arg0) {
       result = combo.getText();
       shell.dispose();       
      }
    });
    ok.setText(MessageText.getString("Button.ok"));
    
    Button cancel = new Button(shell,SWT.PUSH);
    cancel.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event arg0) {
        
        result = null;
       
       shell.dispose();       
      }
    });
    cancel.setText(MessageText.getString("Button.cancel"));
    
    
    shell.addListener(SWT.Dispose,new Listener() {
      public void handleEvent(Event arg0) {
      }
    });
    
    data = new GridData(GridData.FILL_HORIZONTAL);

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    });


    /*
     * On closing remove all reporters that was handled by this instance of the window from the registry 
     */
    shell.addListener(SWT.Close, new Listener() {
      public void handleEvent(Event event) {


        /*
         * Remove this class as a listener to the disposal event for the panels or else
         * as the shell is closing the panels would be disposed one-by-one and each one would

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    });
    file.setText(((NewTorrentWizard) wizard).directoryPath);
    GridData gridData = new GridData(GridData.FILL_HORIZONTAL);
    file.setLayoutData(gridData);
    Button browse = new Button(panel, SWT.PUSH);
    browse.addListener(SWT.Selection, new Listener() {
      /*
       * (non-Javadoc)
       * 
       * @see org.eclipse.swt.widgets.Listener#handleEvent(org.eclipse.swt.widgets.Event)
       */

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  Button bFileMode = new Button(panel,SWT.RADIO);
  Messages.setLanguageText(bFileMode,"installPluginsWizard.mode.file");
  bFileMode.setData("mode",new Integer(MODE_FROM_FILE));
  if(((InstallPluginWizard)wizard).mode == MODE_FROM_FILE) bFileMode.setSelection(true);
  
  Listener modeListener = new Listener() {
    public void handleEvent(Event e) {
      mode = ((Integer) e.widget.getData("mode")).intValue();
      ((InstallPluginWizard)wizard).mode = mode;
    }
  };

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