base/runtime/org.argeo.eclipse.ui.jcr/src/main/java/org/argeo/eclipse/ui/jcr/views/AbstractJcrBrowser.java

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   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.eclipse.ui.jcr.views;
  17
  18 import javax.jcr.Node;
  19
  20 import org.eclipse.jface.viewers.IStructuredSelection;
  21 import org.eclipse.jface.viewers.ITreeContentProvider;
  22 import org.eclipse.jface.viewers.StructuredSelection;
  23 import org.eclipse.jface.viewers.TreeViewer;
  24 import org.eclipse.swt.widgets.Composite;
  25 import org.eclipse.ui.part.ViewPart;
  26
  27 public abstract class AbstractJcrBrowser extends ViewPart {
  28
  29         @Override
  30         public abstract void createPartControl(Composite parent);
  31
  32         /**
  33          * To be overridden to adapt size of form and result frames.
  34          */
  35         abstract protected int[] getWeights();
  36
  37         /**
  38          * To be overridden to provide an adapted size nodeViewer
  39          */
  40         abstract protected TreeViewer createNodeViewer(Composite parent,
  41                         ITreeContentProvider nodeContentProvider);
  42
  43         /**
  44          * To be overridden to retrieve the current nodeViewer
  45          */
  46         abstract protected TreeViewer getNodeViewer();
  47
  48         /*
  49          * Enables the refresh of the tree.
  50          */
  51         @Override
  52         public void setFocus() {
  53                 getNodeViewer().getTree().setFocus();
  54         }
  55
  56         public void refresh(Object obj) {
  57                 // getNodeViewer().update(obj, null);
  58                 getNodeViewer().refresh(obj);
  59                 // getNodeViewer().expandToLevel(obj, 1);
  60         }
  61
  62         public void nodeAdded(Node parentNode, Node newNode) {
  63                 getNodeViewer().refresh(parentNode);
  64                 getNodeViewer().expandToLevel(newNode, 0);
  65         }
  66
  67         public void nodeRemoved(Node parentNode) {
  68                 IStructuredSelection newSel = new StructuredSelection(parentNode);
  69                 getNodeViewer().setSelection(newSel, true);
  70                 // Force refresh
  71                 IStructuredSelection tmpSel = (IStructuredSelection) getNodeViewer()
  72                                 .getSelection();
  73                 getNodeViewer().refresh(tmpSel.getFirstElement());
  74         }
  75 }