multitrackereditor.java

来自「Azureus is a powerful, full-featured, cr」· Java 代码 · 共 511 行 · 第 1/2 页

    oldName = currentName;
  }

  private void computeSaveEnable() 
  {
  	boolean	enabled = anonymous || !("".equals(currentName));
  	
  	if ( enabled ){
  		
 	  	TreeItem[] groupItems = treeGroups.getItems();
		 
 	  	outer:
	  	for(int i = 0 ; i < groupItems.length ; i++) {
	  		TreeItem group = groupItems[i];      
	  		TreeItem[] trackerItems = group.getItems();
	  		for(int j = 0 ; j < trackerItems.length ; j++) {
		  			
	  			if ( ! validURL(trackerItems[j].getText())){
	  				
	  				enabled = false;
	  				
	  				break outer;
		  		}
		  	}
	  	}
  	}
  	
  	if ( enabled != btnSave.getEnabled()){
  		
  		btnSave.setEnabled( enabled );
  	}
  }
  
  private void refresh() {
    treeGroups.removeAll();    
    Iterator iter = trackers.iterator();
    while(iter.hasNext()) {
      List trackerGroup = (List) iter.next();
      TreeItem itemRoot = newGroup();
      Iterator iter2 = trackerGroup.iterator();
      while(iter2.hasNext()) {
        String url =  (String) iter2.next();
        newTracker(itemRoot,url);
      }      
    }      
  }
  
  private void constructMenu() {
    menu = new Menu(shell,SWT.NULL);
    menu.addListener(SWT.Show, new Listener() {
      public void handleEvent(Event e) {
        //1. Empty the menu
        MenuItem[] items = menu.getItems();
        for(int i = 0 ; i < items.length ; i++) {
          items[i].dispose();
        }
        
        //2. Test for the number of element selected
        // should be 1
        if(treeGroups.getSelectionCount() != 1) {
          MenuItem item = new MenuItem(menu,SWT.NULL);
          Messages.setLanguageText(item,"wizard.multitracker.edit.newgroup");
          item.addListener(SWT.Selection, new Listener() {
            public void handleEvent(Event arg0) {
              TreeItem group = newGroup();
              TreeItem itemTracker = newTracker(group,"http://");
              editTreeItem(itemTracker);
            }
          });
          return;
        }
        
        //3. Grab the element
        final TreeItem treeItem = treeGroups.getSelection()[0];
        String type = (String) treeItem.getData("type");
        if(type.equals("tracker")) {
          //The Tracker menu
          MenuItem item = new MenuItem(menu,SWT.NULL);
          Messages.setLanguageText(item,"wizard.multitracker.edit.deletetracker");
          item.addListener(SWT.Selection,new Listener(){
            public void handleEvent(Event arg0) {
              treeItem.dispose();
            }
          });
          
          item = new MenuItem(menu,SWT.NULL);
          Messages.setLanguageText(item,"wizard.multitracker.edit.edit");
          item.addListener(SWT.Selection,new Listener(){
	          public void handleEvent(Event arg0) {
	            editTreeItem(treeItem);
	          }
          });
        } else
        if(type.equals("group")) {
          //The Group menu
          MenuItem item = new MenuItem(menu,SWT.NULL);
          Messages.setLanguageText(item,"wizard.multitracker.edit.newgroup");
          item.addListener(SWT.Selection, new Listener() {
            public void handleEvent(Event arg0) {
              TreeItem group = newGroup();
              TreeItem itemTracker = newTracker(group,"http://");
              editTreeItem(itemTracker);
            }
          });
          
          item = new MenuItem(menu,SWT.NULL);
          Messages.setLanguageText(item,"wizard.multitracker.edit.deletegroup");
          item.addListener(SWT.Selection, new Listener() {
            public void handleEvent(Event arg0) {
              TreeItem[] subItems = treeItem.getItems();
              for(int i = 0 ; i < subItems.length ; i++) {
                subItems[i].dispose();
              }
              treeItem.dispose();
            }
          });
                              
          new MenuItem(menu,SWT.SEPARATOR);
          
          item = new MenuItem(menu,SWT.NULL);
          Messages.setLanguageText(item,"wizard.multitracker.edit.newtracker");
          item.addListener(SWT.Selection, new Listener() {
            public void handleEvent(Event arg0) {
              TreeItem itemTracker = newTracker(treeItem,"http://");
              editTreeItem(itemTracker);
            }
          });
          /*
          new MenuItem(menu,SWT.SEPARATOR);
          
          item = new MenuItem(menu,SWT.NULL);
          Messages.setLanguageText(item,"wizard.multitracker.edit.tracker.moveUp");
          
          item = new MenuItem(menu,SWT.NULL);
          Messages.setLanguageText(item,"wizard.multitracker.edit.tracker.moveDown");
          */    
        }
      }
    });
    treeGroups.setMenu(menu);
  }
  
  private void editTreeItem(final TreeItem item) {
    // Clean up any previous editor control
    Control oldEditor = editor.getEditor();
    if (oldEditor != null)
      oldEditor.dispose();	
 
    itemEdited = item;
    // The control that will be the editor must be a child of the Tree
    final Text text = new Text(treeGroups, SWT.BORDER);
    text.setText(item.getText());
    text.setForeground(item.getForeground());
    text.setSelection(item.getText().length());
    text.addListener (SWT.DefaultSelection, new Listener () {
      public void handleEvent (Event e) {
      	String url = text.getText();
      	if ( validURL(url)){
      		text.setForeground( null );
      		item.setForeground( null );
      	}else{
      		text.setForeground( Colors.colorError );
      		item.setForeground( Colors.colorError );
      	}
      	item.setText(url);
        computeSaveEnable();
        removeEditor();
      }
    });
    
    text.addListener(SWT.Modify, new Listener() {
    	public void handleEvent (Event e) {
    		String url = text.getText();
    		if ( validURL(url)){
    			text.setForeground( null );
    			item.setForeground( null );
    		}else{
    			text.setForeground( Colors.colorError );
    			item.setForeground( Colors.colorError );
    		}
    		item.setText(url);
     		computeSaveEnable();
    	}
    });
    
    text.addKeyListener(new KeyAdapter() {
	    public void keyReleased(KeyEvent keyEvent) {
	     if(keyEvent.character == SWT.ESC) {	       
	       removeEditor();
	     }
	    }
    });
    

    //The text editor must have the same size as the cell and must
    //not be any smaller than 50 pixels.
    editor.horizontalAlignment = SWT.LEFT;
    editor.grabHorizontal = true;
    editor.minimumWidth = 50;

    Rectangle r = text.computeTrim(0, 0, 100, text.getLineHeight());
    editor.minimumHeight = r.height;


    // Open the text editor on the selected row.
    editor.setEditor (text, item);

    // Assign focus to the text control
    text.setFocus ();
  }
  
  private boolean
  validURL(
  	String	str )
  {
  	try{
  		URL url = new URL(str);
  		
  		String prot = url.getProtocol().toLowerCase();
  		
  		if ( prot.equals( "http") || prot.equals( "https" ) || prot.equals( "udp")){
  			
  			return( true );
  		}
  		
  		return( false );
  		
  	}catch( Throwable e ){
  		
  		return( false );
  	}
  }
  
  private void removeEditor() {
    Control oldEditor = editor.getEditor();
    if (oldEditor != null)
      oldEditor.dispose();
  }
  
  private TreeItem newGroup() {
    TreeItem item = new TreeItem(treeGroups,SWT.NULL);
    item.setData("type","group");
    Messages.setLanguageText(item, "wizard.multitracker.group");
    return item;
  }
  
  private TreeItem newTracker(TreeItem root,String url) {
    TreeItem item = new TreeItem(root,SWT.NULL);
    item.setText(url);
    item.setData("type","tracker");
    root.setExpanded(true);
    return item;
  }
}