1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.browsing.ui.swt;
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14 /*******************************************************************************
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15 * Copyright (c) 2000, 2007 IBM Corporation and others.
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16 * All rights reserved. This program and the accompanying materials
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17 * are made available under the terms of the Eclipse Public License v1.0
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18 * which accompanies this distribution, and is available at
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19 * http://www.eclipse.org/legal/epl-v10.html
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22 * IBM Corporation - initial API and implementation
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23 *******************************************************************************/
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25 import org.eclipse.core.runtime.Assert;
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26 import org.eclipse.core.runtime.ListenerList;
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27 import org.eclipse.core.runtime.SafeRunner;
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28 import org.eclipse.jface.util.SafeRunnable;
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29 import org.eclipse.jface.viewers.IPostSelectionProvider;
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30 import org.eclipse.jface.viewers.ISelection;
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31 import org.eclipse.jface.viewers.ISelectionChangedListener;
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32 import org.eclipse.jface.viewers.ISelectionProvider;
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33 import org.eclipse.jface.viewers.SelectionChangedEvent;
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34 import org.eclipse.jface.viewers.StructuredSelection;
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35 import org.eclipse.ui.IEditorPart;
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38 * Manages the current selection in a multi-page editor by tracking the active
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39 * nested editor within the multi-page editor. When the selection changes,
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40 * notifications are sent to all registered listeners.
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42 * This class may be instantiated; it is not intended to be subclassed.
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43 * The base implementation of <code>MultiPageEditor.init</code> creates
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44 * an instance of this class.
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47 public class TabbedPageSelectionProvider implements IPostSelectionProvider {
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50 * Registered selection changed listeners (element type:
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51 * <code>ISelectionChangedListener</code>).
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53 private final ListenerList listeners = new ListenerList();
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56 * Registered post selection changed listeners.
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58 private final ListenerList postListeners = new ListenerList();
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61 * The multi-page editor.
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63 private final TabbedPropertyPage multiPageEditor;
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66 * Creates a selection provider for the given multi-page editor.
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68 * @param multiPageEditor the multi-page editor
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70 public TabbedPageSelectionProvider(TabbedPropertyPage multiPageEditor) {
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71 Assert.isNotNull(multiPageEditor);
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72 this.multiPageEditor = multiPageEditor;
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76 * Method declared on <code>ISelectionProvider</code>.
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78 public void addSelectionChangedListener(ISelectionChangedListener listener) {
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79 listeners.add(listener);
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83 * Adds a listener for post selection changes in this multi page selection provider.
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85 * @param listener a selection changed listener
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88 public void addPostSelectionChangedListener(ISelectionChangedListener listener) {
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89 postListeners.add(listener);
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93 * Notifies all registered selection changed listeners that the editor's
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94 * selection has changed. Only listeners registered at the time this method is
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95 * called are notified.
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97 * @param event the selection changed event
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99 public void fireSelectionChanged(final SelectionChangedEvent event) {
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100 Object[] listeners = this.listeners.getListeners();
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101 fireEventChange(event, listeners);
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105 * Notifies all post selection changed listeners that the editor's
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106 * selection has changed.
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108 * @param event the event to propogate.
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111 public void firePostSelectionChanged(final SelectionChangedEvent event) {
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112 Object[] listeners = postListeners.getListeners();
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113 fireEventChange(event, listeners);
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116 private void fireEventChange(final SelectionChangedEvent event, Object[] listeners) {
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117 for (int i = 0; i < listeners.length; ++i) {
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118 final ISelectionChangedListener l = (ISelectionChangedListener) listeners[i];
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119 SafeRunner.run(new SafeRunnable() {
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120 public void run() {
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121 l.selectionChanged(event);
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128 * Returns the multi-page editor.
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129 * @return the multi-page editor.
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131 public TabbedPropertyPage getMultiPageEditor() {
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132 return multiPageEditor;
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136 * Method declared on <code>ISelectionProvider</code>.
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138 public ISelection getSelection() {
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139 IEditorPart activeEditor = multiPageEditor.getActiveEditor();
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140 if (activeEditor != null) {
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141 ISelectionProvider selectionProvider = activeEditor.getSite()
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142 .getSelectionProvider();
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143 if (selectionProvider != null) {
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144 return selectionProvider.getSelection();
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147 return StructuredSelection.EMPTY;
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151 * Method declaed on <code>ISelectionProvider</code>.
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153 public void removeSelectionChangedListener(
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154 ISelectionChangedListener listener) {
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155 listeners.remove(listener);
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159 * Removes a listener for post selection changes in this multi page selection provider.
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161 * @param listener a selection changed listener
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164 public void removePostSelectionChangedListener(ISelectionChangedListener listener) {
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165 postListeners.remove(listener);
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169 * Method declared on <code>ISelectionProvider</code>.
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171 public void setSelection(ISelection selection) {
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172 IEditorPart activeEditor = multiPageEditor.getActiveEditor();
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173 if (activeEditor != null) {
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174 ISelectionProvider selectionProvider = activeEditor.getSite()
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175 .getSelectionProvider();
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176 if (selectionProvider != null) {
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177 selectionProvider.setSelection(selection);
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