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


    // Start All
    MenuItem start_all = new MenuItem(menu, SWT.PUSH);
    Messages.setLanguageText(start_all, "MainWindow.menu.transfers.startalltransfers");
    Utils.setMenuItemImage(start_all, "start");
    start_all.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event e) {
        ManagerUtils.asyncStartAll();
      }
    });
    start_all.setEnabled(true);


    // Stop All
    MenuItem stop_all = new MenuItem(menu, SWT.PUSH);
    Messages.setLanguageText(stop_all, "MainWindow.menu.transfers.stopalltransfers");
    Utils.setMenuItemImage(stop_all, "stop");
    stop_all.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event e) {
        ManagerUtils.asyncStopAll();
      }
    });
    stop_all.setEnabled(true);
    
    // Pause All
    MenuItem pause_all = new MenuItem(menu, SWT.PUSH);
    Messages.setLanguageText(pause_all, "MainWindow.menu.transfers.pausetransfers");
    Utils.setMenuItemImage(pause_all, "pause");
    pause_all.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event e) {
        ManagerUtils.asyncPause();
      }
    });
    pause_all.setEnabled(g_manager.canPauseDownloads());
    
    // Resume All
    MenuItem resume_all = new MenuItem(menu, SWT.PUSH);
    Messages.setLanguageText(resume_all, "MainWindow.menu.transfers.resumetransfers");
    Utils.setMenuItemImage(resume_all, "resume");
    resume_all.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event e) {
        ManagerUtils.asyncResume();
      }
    });
    resume_all.setEnabled(g_manager.canResumeDownloads());

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    this.needs_update = true;
    this_mon.exit();
  }


  public void created(final MainStatusBar.CLabelPadding label) {
    final Listener click_listener = new Listener() {
      public void handleEvent(Event e) {
        onClick();
      }
    };

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    data.right = new FormAttachment(100,-5);
    data.width = 100;
    data.bottom = new FormAttachment(100,-5);
    action.setLayoutData(data);
    
    cancel.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event arg0) {
        if(lookup != null) {
          lookup.cancel();
        }
        if(!shell.isDisposed()) {
          shell.dispose();
        }
      }
    });
    
    mainLayout = new StackLayout();
    mainComposite.setLayout(mainLayout);
    
    loadingPanel = new Composite(mainComposite,SWT.NONE);
    loadingPanel.setLayout(new FormLayout());
    
    listPanel = new Composite(mainComposite,SWT.NONE);
    listPanel.setLayout(new FillLayout());
    
    subscriptionsList = new Table(listPanel,SWT.V_SCROLL | SWT.SINGLE | SWT.FULL_SELECTION | SWT.VIRTUAL);
    subscriptionsList.setHeaderVisible(true);
    
    TableColumn name = new TableColumn(subscriptionsList,SWT.NONE);
    name.setText(MessageText.getString("subscriptions.listwindow.name"));
    name.setWidth(310);
    name.setResizable(false);
    
    TableColumn popularity = new TableColumn(subscriptionsList,SWT.NONE);
    popularity.setText(MessageText.getString("subscriptions.listwindow.popularity"));
    popularity.setWidth(70);
    popularity.setResizable(false);
    
    subscriptionsList.addListener(SWT.SetData, new Listener() {
      public void handleEvent(Event e) {
        TableItem item = (TableItem) e.item;
        int index = subscriptionsList.indexOf(item);
        if(index >= 0 && index < subscriptionItems.length) {
          SubscriptionItemModel subscriptionItem = subscriptionItems[index];
          item.setText(0,subscriptionItem.name);
          item.setText(1,subscriptionItem.popularityDisplay);
        }
      }
    });
    
    subscriptionsList.setSortColumn(popularity);
    subscriptionsList.setSortDirection(SWT.DOWN);
    
    subscriptionsList.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event arg0) {
        action.setEnabled(subscriptionsList.getSelectionIndex() != -1);
      }
    });
    
    Listener sortListener = new Listener() {
      public void handleEvent(Event e) {
        // determine new sort column and direction
        TableColumn sortColumn = subscriptionsList.getSortColumn();
        TableColumn currentColumn = (TableColumn) e.widget;
        int dir = subscriptionsList.getSortDirection();
        if (sortColumn == currentColumn) {
          dir = dir == SWT.UP ? SWT.DOWN : SWT.UP;
        } else {
          subscriptionsList.setSortColumn(currentColumn);
          dir = SWT.DOWN;
        }
        subscriptionsList.setSortDirection(dir);
        sortAndRefresh();
      }
    };
    name.addListener(SWT.Selection, sortListener);
    popularity.addListener(SWT.Selection, sortListener);
    
    animatedImage = new AnimatedImage(loadingPanel);
    loadingText = new Label(loadingPanel,SWT.WRAP | SWT.CENTER);
    loadingProgress = new ProgressBar(loadingPanel,SWT.HORIZONTAL);
    
    animatedImage.setImageFromName("spinner_big");
    String contentName = "Dummy";
    if(download != null) {
      contentName = download.getDisplayName();
    }
    loadingText.setText(MessageText.getString("subscriptions.listwindow.loadingtext", new String[] {contentName}));
    
    loadingProgress.setMinimum(0);
    loadingProgress.setMaximum(300);
    loadingProgress.setSelection(0);
    
    data = new FormData();
    data.left = new FormAttachment(1,2,-16);
    data.top = new FormAttachment(1,2,-32);
    data.width = 32;
    data.height = 32;
    animatedImage.setLayoutData(data);
    
    data = new FormData();
    data.left = new FormAttachment(0,5);
    data.right = new FormAttachment(100,-5);
    data.top = new FormAttachment(animatedImage.getControl(),10);
    data.height = 50;
    loadingText.setLayoutData(data);
    
    data = new FormData();
    data.left = new FormAttachment(0,5);
    data.right = new FormAttachment(100,-5);
    data.top = new FormAttachment(loadingText,5);
    loadingProgress.setLayoutData(data);
    
    boolean autoCheck = COConfigurationManager.getBooleanParameter("subscriptions.autocheck");
    
    if(autoCheck) {
      startChecking();
    } else {
      action.setText(MessageText.getString("Button.yes"));
      Composite acceptPanel = new Composite(mainComposite,SWT.NONE);
      acceptPanel.setLayout(new FormLayout());
      
      Label acceptLabel = new Label(acceptPanel,SWT.WRAP | SWT.CENTER);
      
      acceptLabel.setText(MessageText.getString("subscriptions.listwindow.autochecktext"));
      
      data = new FormData();
      data.left = new FormAttachment(0,5);
      data.right = new FormAttachment(100,-5);
      data.top = new FormAttachment(1,3,0);
      acceptLabel.setLayoutData(data);
      
      action.addListener(SWT.Selection, new Listener() {
        public void handleEvent(Event event) {
          action.removeListener(SWT.Selection,this);
          COConfigurationManager.setParameter("subscriptions.autocheck",true);
          startChecking();
          mainComposite.layout();

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            mainComposite.layout();
            
            sortAndRefresh();
            subscriptionsList.setSelection(0);
            
            action.addListener(SWT.Selection, new Listener() {
              public void handleEvent(Event arg0) {
                if(subscriptionsList != null && !subscriptionsList.isDisposed()) {
                  int selectedIndex = subscriptionsList.getSelectionIndex();
                  if(selectedIndex >= 0 && selectedIndex < subscriptionItems.length) {
                    Subscription subscription = (Subscription) subscriptionItems[selectedIndex].subscription;

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    // Queue
    final MenuItem itemQueue = new MenuItem(menu, SWT.PUSH);
    Messages.setLanguageText(itemQueue, "MyTorrentsView.menu.queue");
    Utils.setMenuItemImage(itemQueue, "start");
    itemQueue.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event e) {
        ManagerUtils.queue(download, splash);
      }
    });
    itemQueue.setEnabled(ManagerUtils.isStartable(download));




    // Stop
    final MenuItem itemStop = new MenuItem(menu, SWT.PUSH);
    Messages.setLanguageText(itemStop, "MyTorrentsView.menu.stop");
    Utils.setMenuItemImage(itemStop, "stop");
    itemStop.addListener(SWT.Selection, new Listener() {
      public void handleEvent(Event e) {
        ManagerUtils.stop(download, splash);
      }
    });
    itemStop.setEnabled(ManagerUtils.isStopable(download));

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    textPath.setLayoutData(gridData);
    textPath.setText(((ImportTorrentWizard)wizard).getTorrentFile());
  
    Button browse = new Button(panel,SWT.PUSH);
    Messages.setLanguageText(browse, "importTorrentWizard.torrentfile.browse");
    browse.addListener(SWT.Selection,new Listener() {
      
      public void handleEvent(Event arg0){
        
      FileDialog fd = new FileDialog(wizard.getWizardWindow(), SWT.SAVE);
      
      fd.setFileName(textPath.getText());
      
      fd.setFilterExtensions(new String[]{"*.torrent", "*.tor", Constants.FILE_WILDCARD});
      
      String path = fd.open();
      
      if(path != null) {
        
        textPath.setText(path);
      }     
      }
    });
  
    textPath.addListener(SWT.Modify, new Listener(){
      
      public void handleEvent(Event event) {
      String path = textPath.getText();
      
      pathSet( path );

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       bOk.setText(MessageText.getString("Button.ok"));
       gridData = new GridData(GridData.FILL_HORIZONTAL | GridData.HORIZONTAL_ALIGN_END | GridData.HORIZONTAL_ALIGN_FILL);
       gridData.grabExcessHorizontalSpace = true;
       gridData.widthHint = 70;
       bOk.setLayoutData(gridData);
       bOk.addListener(SWT.Selection,new Listener() {
          public void handleEvent(Event e) {
           close(true);
           }
       });
      
       Button bCancel = new Button(shell,SWT.PUSH);
       bCancel.setText(MessageText.getString("Button.cancel"));
       gridData = new GridData(GridData.HORIZONTAL_ALIGN_END);
       gridData.grabExcessHorizontalSpace = false;
       gridData.widthHint = 70;
       bCancel.setLayoutData(gridData);    
       bCancel.addListener(SWT.Selection,new Listener() {
         public void handleEvent(Event e) {
           close(false);
           }
       });
      
      shell.setDefaultButton( bOk );
      
      shell.addListener(SWT.Traverse, new Listener() {  
        public void handleEvent(Event e) {
          if ( e.character == SWT.ESC){
            close( false );
          }
        }

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    if (true == isDocked) {


      performDocking();


      if (null == dockingEnabler) {
        dockingEnabler = new Listener() {


          public void handleEvent(Event event) {
            if (event.type == SWT.Resize) {


              if (true == isResizeWithShell()) {
                System.out.println("resizing");//KN: sysout
              } else {
                performDocking();
              }
            } else if (event.type == SWT.Move) {
              performDocking();
            }


          }
        };
      }


      if (null != mainShell && false == mainShell.isDisposed()) {
        if (true == isMoveWithShell()) {
          mainShell.addListener(SWT.Move, dockingEnabler);
        }
        if (true == isResizeWithShell()) {
          mainShell.addListener(SWT.Resize, dockingEnabler);
        }
        anchorControl.addListener(SWT.Move, dockingEnabler);
        anchorControl.addListener(SWT.Resize, dockingEnabler);
      }


      anchorControl.addDisposeListener(new DisposeListener() {
        public void widgetDisposed(DisposeEvent e) {
          setDocked(false);
        }
      });


      dockedShell.addListener(SWT.Close, new Listener() {
        public void handleEvent(Event e) {
          setDocked(false);


        }
      });

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    textPath.setLayoutData(gridData);
    textPath.setText("");
  
    Button browse = new Button(panel,SWT.PUSH);
    Messages.setLanguageText(browse, "importTorrentWizard.importfile.browse");
    browse.addListener(SWT.Selection,new Listener() {
      public void handleEvent(Event arg0) {
        
      FileDialog fd = new FileDialog(wizard.getWizardWindow());
      
      fd.setFileName(textPath.getText());
      
      fd.setFilterExtensions(new String[]{"*.xml", Constants.FILE_WILDCARD});
      
      String path = fd.open();
      
      if(path != null) {
        
        textPath.setText(path);      
      }     
      }
    });
  
    textPath.addListener(SWT.Modify, new Listener(){
      
      public void handleEvent(Event event) {
        
      String path = textPath.getText();

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    if (skinObject instanceof SWTSkinObjectButton) {
      return;
    }
    
    Listener l = new Listener() {
      boolean bDownPressed;
      private TimerEvent timerEvent;


      public void handleEvent(Event event) {
        if (event.type == SWT.MouseDown) {
          if (timerEvent == null) {
            timerEvent = SimpleTimer.addEvent("MouseHold",
                SystemTime.getOffsetTime(1000), new TimerEventPerformer() {
                  public void perform(TimerEvent event) {
                    timerEvent = null;


                    if (!bDownPressed) {
                      return;
                    }
                    bDownPressed = false;


                    boolean stillPressed = true;
                    for (Iterator iter = listeners.iterator(); iter.hasNext();) {
                      ButtonListenerAdapter l = (ButtonListenerAdapter) iter.next();
                      stillPressed &= !l.held(SWTSkinButtonUtility.this);
                    }
                    bDownPressed = stillPressed;
                  }
                });
          }
          bDownPressed = true;
          return;
        } else {
          if (timerEvent != null) {
            timerEvent.cancel();
            timerEvent = null;
          }
          if (!bDownPressed) {
            return;
          }
        }


        bDownPressed = false;


        if (isDisabled()) {
          return;
        }


        for (Iterator iter = listeners.iterator(); iter.hasNext();) {
          ButtonListenerAdapter l = (ButtonListenerAdapter) iter.next();
          l.pressed(SWTSkinButtonUtility.this);
          l.pressed(SWTSkinButtonUtility.this,
              SWTSkinButtonUtility.this.skinObject, event.stateMask);
        }
      }
    };
    if (skinObject instanceof SWTSkinObjectContainer) {

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