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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 snippets.viewers.Snippet002TreeViewer;
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15
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16 import dwt.DWT;
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17 import dwtx.jface.viewers.ITreeContentProvider;
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18 import dwtx.jface.viewers.LabelProvider;
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19 import dwtx.jface.viewers.TreeViewer;
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20 import dwtx.jface.viewers.Viewer;
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21 import dwt.layout.FillLayout;
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22 import dwt.widgets.Display;
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23 import dwt.widgets.Shell;
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24
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25 import dwt.dwthelper.utils;
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26
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27 import tango.util.Convert;
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28
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29 /**
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30 * A simple TreeViewer to demonstrate usage
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31 *
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32 * @author Tom Schindl <tom.schindl@bestsolution.at>
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33 *
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34 */
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35 class Snippet002TreeViewer {
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36 private class MyContentProvider : ITreeContentProvider {
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37
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38 /* (non-Javadoc)
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39 * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
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40 */
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41 public Object[] getElements(Object inputElement) {
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42 return (cast(MyModel)inputElement).child/*.dup*/;
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43 }
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44
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45 /* (non-Javadoc)
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46 * @see org.eclipse.jface.viewers.IContentProvider#dispose()
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47 */
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48 public void dispose() {
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49
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50 }
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51
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52 /* (non-Javadoc)
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53 * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
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54 */
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55 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
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56
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57 }
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58
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59 /* (non-Javadoc)
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60 * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
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61 */
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62 public Object[] getChildren(Object parentElement) {
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63 return getElements(parentElement);
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64 }
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65
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66 /* (non-Javadoc)
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67 * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
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68 */
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69 public Object getParent(Object element) {
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70 if( element is null) {
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71 return null;
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72 }
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73
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74 return (cast(MyModel)element).parent;
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75 }
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76
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77 /* (non-Javadoc)
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78 * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
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79 */
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80 public bool hasChildren(Object element) {
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81 return (cast(MyModel)element).child.length > 0;
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82 }
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83
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84 }
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85
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86 public class MyModel {
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87 public MyModel parent;
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88 public MyModel[] child;
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89 public int counter;
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90
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91 public this(int counter, MyModel parent) {
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92 this.parent = parent;
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93 this.counter = counter;
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94 }
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95
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96 public String toString() {
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97 String rv = "Item ";
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98 if( parent !is null ) {
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99 rv = parent.toString() ~ ".";
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100 }
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101
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102 rv ~= to!(char[])(counter);
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103
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104 return rv;
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105 }
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106 }
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107
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108 public this(Shell shell) {
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109 TreeViewer v = new TreeViewer(shell);
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110 v.setLabelProvider(new LabelProvider());
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111 v.setContentProvider(new MyContentProvider());
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112 v.setInput(createModel());
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113 }
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114
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115 private MyModel createModel() {
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116 MyModel root = new MyModel(0,null);
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117 root.counter = 0;
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118
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119 MyModel tmp;
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120 for( int i = 1; i < 10; i++ ) {
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121 tmp = new MyModel(i, root);
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122 root.child ~= tmp;
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123 for( int j = 1; j < i; j++ ) {
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124 tmp.child ~= new MyModel(j,tmp);
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125 }
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126 }
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127
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128 return root;
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129 }
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130
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131 }
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132
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133
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134 void main() {
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135 Display display = new Display ();
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136 Shell shell = new Shell(display);
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137 shell.setLayout(new FillLayout());
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138 new Snippet002TreeViewer(shell);
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139 shell.open ();
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140
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141 while (!shell.isDisposed ()) {
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142 if (!display.readAndDispatch ()) display.sleep ();
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143 }
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144
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145 display.dispose ();
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146 }
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