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annotate jface/snippets/Snippet005TreeCustomMenu.d @ 89:cbba80cceb7a

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Port of jface Snippets 1,2,4,5,7
author Bill Baxter <bill@billbaxter.com>
date Mon, 19 May 2008 23:42:48 +0900
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89
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1 /*******************************************************************************
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2 * Copyright (c) 2006 Tom Schindl 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 * Tom Schindl - initial API and implementation
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10 * Port to the D programming language:
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11 * wbaxter at gmail dot com
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12 *******************************************************************************/
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13
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14 module jface.snippets.Snippet005TreeCustomMenu;
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15
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16 import dwtx.jface.action.Action;
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17 import dwtx.jface.action.IMenuListener;
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18 import dwtx.jface.action.IMenuManager;
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19 import dwtx.jface.action.MenuManager;
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20 import dwtx.jface.viewers.IStructuredSelection;
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21 import dwtx.jface.viewers.ITreeContentProvider;
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22 import dwtx.jface.viewers.LabelProvider;
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23 import dwtx.jface.viewers.TreeViewer;
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24 import dwtx.jface.viewers.Viewer;
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25 import dwt.layout.FillLayout;
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26 import dwt.widgets.Display;
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27 import dwt.widgets.Shell;
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28 import dwt.DWT;
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29
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30 import dwt.dwthelper.utils;
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31
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32 import tango.util.Convert;
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33 import tango.io.Stdout;
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34
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35 /**
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36 * Customized context menu based on TreeItem-Selection
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37 *
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38 * @author Tom Schindl <tom.schindl@bestsolution.at>
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39 *
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40 */
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41 public class Snippet005TreeCustomMenu {
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42 private class MyContentProvider : ITreeContentProvider {
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43
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44 public Object[] getElements(Object inputElement) {
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45 return (cast(MyModel) inputElement).child;
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46 }
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47
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48 /* (non-Javadoc)
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49 * @see org.eclipse.jface.viewers.IContentProvider#dispose()
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50 */
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51 public void dispose() {
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52
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53 }
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54
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55 /* (non-Javadoc)
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56 * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
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57 */
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58 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
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59
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60 }
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61
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62 /* (non-Javadoc)
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63 * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
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64 */
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65 public Object[] getChildren(Object parentElement) {
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66 return getElements(parentElement);
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67 }
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68
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69 /* (non-Javadoc)
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70 * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
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71 */
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72 public Object getParent(Object element) {
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73 if (element is null) {
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74 return null;
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75 }
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76
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77 return (cast(MyModel) element).parent;
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78 }
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79
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80 /* (non-Javadoc)
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81 * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
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82 */
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83 public bool hasChildren(Object element) {
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84 return (cast(MyModel) element).child.length > 0;
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85 }
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86
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87 }
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88
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89 public class MyModel {
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90 public MyModel parent;
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91
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92 public MyModel[] child;
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93
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94 public int counter;
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95
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96 public this(int counter, MyModel parent) {
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97 this.parent = parent;
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98 this.counter = counter;
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99 }
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100
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101 public String toString() {
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102 String rv = "Item ";
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103 if (parent !is null) {
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104 rv = parent.toString() ~ ".";
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105 }
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106
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107 rv ~= to!(char[])(counter);
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108
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109 return rv;
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110 }
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111 }
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112
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113 public this(Shell shell) {
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114 final TreeViewer v = new TreeViewer(shell);
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115 v.setLabelProvider(new LabelProvider());
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116 v.setContentProvider(new MyContentProvider());
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117 v.setInput(createModel());
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118
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119 final Action a = new class Action {};
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120 final MenuManager mgr = new MenuManager();
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121 mgr.setRemoveAllWhenShown(true);
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122
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123 class MyMenuListener : IMenuListener {
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124 TreeViewer v;
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125 Action a;
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126 MenuManager mgr;
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127
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128 this(TreeViewer v_, Action a_, MenuManager mgr_) {
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129 this.v = v_; this.a = a_; this.mgr = mgr_;
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130 }
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131
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132 /* (non-Javadoc)
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133 * @see org.eclipse.jface.action.IMenuListener#menuAboutToShow(org.eclipse.jface.action.IMenuManager)
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134 */
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135 public void menuAboutToShow(IMenuManager manager) {
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136 IStructuredSelection selection = cast(IStructuredSelection) v
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137 .getSelection();
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138 if (!selection.isEmpty()) {
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139 a.setText("Action for "
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140 ~ (cast(MyModel) selection.getFirstElement())
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141 .toString());
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142 mgr.add(a);
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143 }
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144 }
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145 }
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146
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147 mgr.addMenuListener(new MyMenuListener(v,a,mgr));
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148 v.getControl().setMenu(mgr.createContextMenu(v.getControl()));
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149 }
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150
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151 private MyModel createModel() {
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152
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153 MyModel root = new MyModel(0, null);
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154 root.counter = 0;
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155
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156 MyModel tmp;
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157 for (int i = 1; i < 10; i++) {
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158 tmp = new MyModel(i, root);
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159 root.child ~= tmp;
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160 for (int j = 1; j < i; j++) {
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161 tmp.child ~= new MyModel(j, tmp);
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162 }
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163 }
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164
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165 return root;
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166 }
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167
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168 }
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169
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170 void main() {
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171 Display display = new Display();
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172 Shell shell = new Shell(display);
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173 shell.setLayout(new FillLayout());
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174 new Snippet005TreeCustomMenu(shell);
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175 shell.open();
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176
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177 while (!shell.isDisposed()) {
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178 if (!display.readAndDispatch())
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179 display.sleep();
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180 }
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181
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182 display.dispose();
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183 }