Examples of org.eclipse.swt.events.TreeListener

org.eclipse.swt.events.TreeListener
Classes which implement this interface provide methods that deal with the expanding and collapsing of tree branches.
After creating an instance of a class that implements this interface it can be added to a tree control using the addTreeListener method and removed using the removeTreeListener method. When a branch of the tree is expanded or collapsed, the appropriate method will be invoked.
@see TreeAdapter @see TreeEvent

  }


  /* (non-Javadoc) Method declared on Viewer. */
  protected void hookControl(Control control) {
    super.hookControl(control);
    addTreeListener(control, new TreeListener() {
      public void treeExpanded(TreeEvent event) {
        handleTreeExpand(event);
      }


      public void treeCollapsed(TreeEvent event) {

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          Object firstElement = selection.getFirstElement();
          onOpen(firstElement);
        }


      });
      viewer.getTree().addTreeListener(new TreeListener() {


        public void treeCollapsed(TreeEvent e) {


        }

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            public void controlResized(ControlEvent event) {
                tableLayout.layout(table, true);
            }
        };


        TreeListener treeExpansionListener = new TreeListener() {
            private void treeChanged() {
                tableLayout.layout(table, true);
            }


            // Javadoc inherited

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          notifyChanged();
        }
      }
    });


    getTree().addTreeListener(new TreeListener() {
      public void treeExpanded(TreeEvent e) {
        refresh();
      }


      public void treeCollapsed(TreeEvent e) {

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          notifyChanged();
        }
      }
    });


    getTree().addTreeListener(new TreeListener() {
      public void treeExpanded(TreeEvent e) {
        refresh();
      }


      public void treeCollapsed(TreeEvent e) {

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    composite = new Composite(sShell, SWT.NONE);
    composite.setLayoutData(gridData);
    composite.setLayout(gridLayout1);
    tree = new Tree(composite, SWT.SINGLE | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL | SWT.CHECK);
    tree.setLayoutData(gridData1);
    tree.addTreeListener(new TreeListener() {
          public void treeExpanded(TreeEvent e) {
            TreeItem ti = (TreeItem) e.item;
            ti.setImage(MaudeWorkstationGUIPlugin.getImage(Messages.getString("MaudeWorkstationGUIPlugin.DIALOGO_ELECCION_PATH_FOLDER_OPEN"))); //$NON-NLS-1$
            
          }

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                if (e.character == ' ')
                    removeSelected();
            }
        });


        selectedTree.addTreeListener(new TreeListener() {


            public void treeCollapsed(TreeEvent event) {
                selectedTreeCollapsed(event);
            }

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            }
        });


        // Add a tree listener to expand and collapse which
        // allows for lazy creation of children
        tree.addTreeListener(new TreeListener() {
            public void treeExpanded(final TreeEvent event) {
                handleTreeExpand(event);
            }


            public void treeCollapsed(final TreeEvent event) {

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          expanded.add(item2.getData());
        }
      }


    });
    gallery.addTreeListener(new TreeListener() {


      public void treeCollapsed(TreeEvent e) {
        expanded.remove(e.data);


      }

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  }


  /* (non-Javadoc) Method declared on Viewer. */
  protected void hookControl(Control control) {
    super.hookControl(control);
    addTreeListener(control, new TreeListener() {
      public void treeExpanded(TreeEvent event) {
        handleTreeExpand(event);
      }


      public void treeCollapsed(TreeEvent event) {

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