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Added dwt-addons in original directory structure of eclipse.org
author Frank Benoit <benoit@tionex.de>
date Sat, 14 Mar 2009 18:23:29 +0100
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2006 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module org.eclipse.jface.window.WindowManager;
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14
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15 import org.eclipse.jface.window.Window;
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16
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17
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18 import org.eclipse.core.runtime.Assert;
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19
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20 import java.lang.all;
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21 import java.util.List;
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22 import java.util.ArrayList;
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23 import java.util.Iterator;
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24 import java.util.Set;
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25
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26 /**
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27 * A manager for a group of windows. Window managers are an optional JFace
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28 * feature used in applications which create many different windows (dialogs,
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29 * wizards, etc.) in addition to a main window. A window manager can be used to
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30 * remember all the windows that an application has created (independent of
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31 * whether they are presently open or closed). There can be several window
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32 * managers, and they can be arranged into a tree. This kind of organization
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33 * makes it simple to close whole subgroupings of windows.
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34 * <p>
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35 * Creating a window manager is as simple as creating an instance of
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36 * <code>WindowManager</code>. Associating a window with a window manager is
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37 * done with <code>WindowManager.add(Window)</code>. A window is automatically
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38 * removed from its window manager as a side effect of closing the window.
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39 * </p>
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40 *
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41 * @see Window
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42 */
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43 public class WindowManager {
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44
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45 /**
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46 * List of windows managed by this window manager
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47 * (element type: <code>Window</code>).
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48 */
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49 private ArrayList windows;
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50
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51 /**
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52 * List of window managers who have this window manager
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53 * as their parent (element type: <code>WindowManager</code>).
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54 */
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55 private List subManagers;
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56
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57 /**
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58 * Creates an empty window manager without a parent window
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59 * manager (that is, a root window manager).
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60 */
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61 public this() {
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62 windows = new ArrayList();
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63 }
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64
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65 /**
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66 * Creates an empty window manager with the given
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67 * window manager as parent.
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68 *
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69 * @param parent the parent window manager
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70 */
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71 public this(WindowManager parent) {
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72 windows = new ArrayList();
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73 Assert.isNotNull(parent);
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74 parent.addWindowManager(this);
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75 }
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76
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77 /**
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78 * Adds the given window to the set of windows managed by
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79 * this window manager. Does nothing is this window is
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80 * already managed by this window manager.
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81 *
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82 * @param window the window
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83 */
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84 public void add(Window window) {
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85 if (!windows.contains(window)) {
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86 windows.add(window);
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87 window.setWindowManager(this);
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88 }
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89 }
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90
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91 /**
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92 * Adds the given window manager to the list of
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93 * window managers that have this one as a parent.
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94 * </p>
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95 * @param wm the child window manager
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96 */
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97 private void addWindowManager(WindowManager wm) {
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98 if (subManagers is null) {
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99 subManagers = new ArrayList();
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100 }
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101 if (!subManagers.contains(wm)) {
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102 subManagers.add(wm);
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103 }
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104 }
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105
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106 /**
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107 * Attempts to close all windows managed by this window manager,
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108 * as well as windows managed by any descendent window managers.
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109 *
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110 * @return <code>true</code> if all windows were sucessfully closed,
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111 * and <code>false</code> if any window refused to close
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112 */
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113 public bool close() {
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114 List t = cast(List) windows.clone(); // make iteration robust
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115 Iterator e = t.iterator();
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116 while (e.hasNext()) {
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117 Window window = cast(Window) e.next();
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118 bool closed = window.close();
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119 if (!closed) {
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120 return false;
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121 }
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122 }
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123 if (subManagers !is null) {
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124 e = subManagers.iterator();
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125 while (e.hasNext()) {
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126 WindowManager wm = cast(WindowManager) e.next();
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127 bool closed = wm.close();
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128 if (!closed) {
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129 return false;
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130 }
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131 }
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132 }
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133 return true;
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134 }
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135
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136 /**
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137 * Returns this window manager's number of windows
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138 *
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139 * @return the number of windows
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140 * @since 3.0
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141 */
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142 public int getWindowCount() {
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143 return windows.size();
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144 }
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145
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146 /**
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147 * Returns this window manager's set of windows.
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148 *
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149 * @return a possibly empty list of window
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150 */
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151 public Window[] getWindows() {
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152 return arraycast!(Window)(windows.toArray());
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153 }
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154
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155 /**
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156 * Removes the given window from the set of windows managed by
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157 * this window manager. Does nothing is this window is
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158 * not managed by this window manager.
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159 *
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160 * @param window the window
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161 */
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162 public final void remove(Window window) {
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163 if (windows.contains(window)) {
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164 windows.remove(window);
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165 window.setWindowManager(null);
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166 }
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167 }
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168 }