SimpleTreeView.java

   1 /*
   2  * Copyright (C) 2007-2012 Mathieu Baudier
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.demo.i18n.views;
  17
  18 import org.argeo.demo.i18n.I18nDemoPlugin;
  19 import org.argeo.demo.i18n.providers.SimpleContentProvider;
  20 import org.argeo.demo.i18n.providers.SimpleLabelProvider;
  21 import org.argeo.demo.i18n.utils.GenericDoubleClickListener;
  22 import org.eclipse.jface.action.MenuManager;
  23 import org.eclipse.jface.viewers.ISelectionChangedListener;
  24 import org.eclipse.jface.viewers.ITreeContentProvider;
  25 import org.eclipse.jface.viewers.SelectionChangedEvent;
  26 import org.eclipse.jface.viewers.TreeViewer;
  27 import org.eclipse.swt.SWT;
  28 import org.eclipse.swt.layout.FillLayout;
  29 import org.eclipse.swt.layout.GridData;
  30 import org.eclipse.swt.layout.GridLayout;
  31 import org.eclipse.swt.widgets.Composite;
  32 import org.eclipse.swt.widgets.Menu;
  33 import org.eclipse.ui.part.ViewPart;
  34
  35 /**
  36  * Basic View to display a tree with internationalized labels
  37  */
  38
  39 public class SimpleTreeView extends ViewPart {
  40         // private final static Log log = LogFactory.getLog(SimpleTreeView.class);
  41         public final static String ID = I18nDemoPlugin.ID + ".simpleTreeView";
  42
  43         // This page widgets
  44         private TreeViewer treeViewer;
  45         private SimpleContentProvider treeContentProvider;
  46
  47         @Override
  48         public void createPartControl(Composite parent) {
  49                 parent.setLayout(new FillLayout());
  50
  51                 // Creates the tree
  52                 Composite composite = new Composite(parent, SWT.NONE);
  53                 GridLayout gl = new GridLayout(1, false);
  54                 composite.setLayout(gl);
  55
  56                 // tree viewer
  57                 treeContentProvider = new SimpleContentProvider();
  58                 treeViewer = createTreeViewer(composite, treeContentProvider);
  59
  60                 // context menu : it is completely defined in the plugin.xml file.
  61                 MenuManager menuManager = new MenuManager();
  62                 Menu menu = menuManager.createContextMenu(treeViewer.getTree());
  63                 treeViewer.getTree().setMenu(menu);
  64                 getSite().registerContextMenu(menuManager, treeViewer);
  65
  66                 getSite().setSelectionProvider(treeViewer);
  67
  68                 treeViewer.setInput(getViewSite());
  69         }
  70
  71         protected TreeViewer createTreeViewer(Composite parent,
  72                         final ITreeContentProvider treeContentProvider) {
  73
  74                 final TreeViewer tmpTreeViewer = new TreeViewer(parent, SWT.MULTI);
  75
  76                 tmpTreeViewer.getTree().setLayoutData(
  77                                 new GridData(SWT.FILL, SWT.FILL, true, true));
  78
  79                 tmpTreeViewer.setContentProvider(treeContentProvider);
  80                 tmpTreeViewer.setLabelProvider(new SimpleLabelProvider());
  81                 tmpTreeViewer
  82                                 .addSelectionChangedListener(new ISelectionChangedListener() {
  83                                         public void selectionChanged(SelectionChangedEvent event) {
  84                                                 // something can be done here
  85                                         }
  86                                 });
  87
  88                 tmpTreeViewer.addDoubleClickListener(new GenericDoubleClickListener(
  89                                 tmpTreeViewer));
  90                 return tmpTreeViewer;
  91         }
  92
  93         @Override
  94         public void setFocus() {
  95                 // Do nothing for the time being.
  96         }
  97 }