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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 * yidabu at gmail dot com ( D China http://www.d-programming-language-china.org/ )
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12 *******************************************************************************/
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13
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14 module jface.snippets.Snippet014TreeViewerNoMandatoryLabelProvider;
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15
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16
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17 import dwtx.jface.resource.FontRegistry;
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18 import dwtx.jface.viewers.ITableColorProvider;
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19 import dwtx.jface.viewers.ITableFontProvider;
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20 import dwtx.jface.viewers.ITableLabelProvider;
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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.DWT;
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26 import dwt.graphics.Color;
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27 import dwt.graphics.Font;
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28 import dwt.graphics.Image;
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29 import dwt.layout.FillLayout;
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30 import dwt.widgets.Display;
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31 import dwt.widgets.Shell;
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32 import dwt.widgets.TreeColumn;
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33
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34 import dwt.dwthelper.utils;
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35
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36 import tango.util.Convert;
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37 import tango.util.container.LinkedList;
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38
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39
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40
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41 void main(String[] args) {
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42 Display display = new Display();
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43 Shell shell = new Shell(display);
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44 shell.setLayout(new FillLayout());
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45 new Snippet014TreeViewerNoMandatoryLabelProvider(shell);
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46 shell.open();
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47
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48 while (!shell.isDisposed()) {
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49 if (!display.readAndDispatch())
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50 display.sleep();
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51 }
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52
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53 display.dispose();
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54 }
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55
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56 /**
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57 * A simple TreeViewer to demonstrate usage
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58 *
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59 * @author Tom Schindl <tom.schindl@bestsolution.at>
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60 *
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61 */
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62 public class Snippet014TreeViewerNoMandatoryLabelProvider {
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63 alias LinkedList!(MyModel) ArrayList;
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64
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65 private class MyContentProvider : ITreeContentProvider {
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66
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67 /*
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68 * (non-Javadoc)
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69 *
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70 * @see dwtx.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
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71 */
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72 public Object[] getElements(Object inputElement) {
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73 return (cast(MyModel) inputElement).child.toArray();
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74 }
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75
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76 /*
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77 * (non-Javadoc)
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78 *
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79 * @see dwtx.jface.viewers.IContentProvider#dispose()
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80 */
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81 public void dispose() {
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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 * (non-Javadoc)
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87 *
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88 * @see dwtx.jface.viewers.IContentProvider#inputChanged(dwtx.jface.viewers.Viewer,
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89 * java.lang.Object, java.lang.Object)
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90 */
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91 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
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92
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93 }
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94
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95 /*
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96 * (non-Javadoc)
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97 *
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98 * @see dwtx.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
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99 */
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100 public Object[] getChildren(Object parentElement) {
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101 return getElements(parentElement);
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102 }
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103
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104 /*
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105 * (non-Javadoc)
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106 *
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107 * @see dwtx.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
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108 */
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109 public Object getParent(Object element) {
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110 if (element is null) {
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111 return null;
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112 }
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113
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114 return (cast(MyModel) element).parent;
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115 }
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116
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117 /*
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118 * (non-Javadoc)
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119 *
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120 * @see dwtx.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
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121 */
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122 public bool hasChildren(Object element) {
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123 return (cast(MyModel) element).child.size() > 0;
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124 }
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125
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126 }
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127
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128 public class MyModel {
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129 public MyModel parent;
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130
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131 public ArrayList child;
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132
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133 public int counter;
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134
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135 public this(int counter, MyModel parent) {
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136 this.parent = parent;
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137 this.counter = counter;
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138 child = new ArrayList();
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139 }
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140
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141 public String toString() {
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142 String rv = "Item ";
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143 if (parent !is null) {
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144 rv = parent.toString() ~ ".";
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145 }
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146
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147 rv ~= to!(String)(counter);
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148
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149 return rv;
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150 }
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151 }
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152
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153 public class MyLabelProvider : LabelProvider,
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154 ITableLabelProvider, ITableFontProvider, ITableColorProvider {
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155 FontRegistry registry;
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156 this()
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157 {
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158 registry = new FontRegistry();
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159 }
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160
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161 public Image getColumnImage(Object element, int columnIndex) {
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162 return null;
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163 }
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164
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165 public String getColumnText(Object element, int columnIndex) {
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166 return "Column " ~ to!(String)(columnIndex) ~ " => " ~ element.toString();
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167 }
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168
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169 public Font getFont(Object element, int columnIndex) {
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170 if ((cast(MyModel) element).counter % 2 == 0) {
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171 return registry.getBold(Display.getCurrent().getSystemFont()
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172 .getFontData()[0].getName());
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173 }
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174 return null;
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175 }
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176
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177 public Color getBackground(Object element, int columnIndex) {
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178 if ((cast(MyModel) element).counter % 2 == 0) {
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179 return Display.getCurrent().getSystemColor(DWT.COLOR_RED);
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180 }
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181 return null;
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182 }
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183
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184 public Color getForeground(Object element, int columnIndex) {
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185 if ((cast(MyModel) element).counter % 2 == 1) {
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186 return Display.getCurrent().getSystemColor(DWT.COLOR_RED);
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187 }
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188 return null;
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189 }
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190
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191 }
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192
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193 public this(Shell shell) {
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194 final TreeViewer v = new TreeViewer(shell);
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195
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196 TreeColumn column = new TreeColumn(v.getTree(),DWT.NONE);
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197 column.setWidth(200);
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198 column.setText("Column 1");
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199
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200 column = new TreeColumn(v.getTree(),DWT.NONE);
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201 column.setWidth(200);
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202 column.setText("Column 2");
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203
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204 v.setLabelProvider(new MyLabelProvider());
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205 v.setContentProvider(new MyContentProvider());
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206 v.setInput(createModel());
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207 }
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208
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209 private MyModel createModel() {
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210
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211 MyModel root = new MyModel(0, null);
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212 root.counter = 0;
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213
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214 MyModel tmp;
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215 for (int i = 1; i < 10; i++) {
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216 tmp = new MyModel(i, root);
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217 root.child.add(tmp);
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218 for (int j = 1; j < i; j++) {
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219 tmp.child.add(new MyModel(j, tmp));
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220 }
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221 }
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222
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223 return root;
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224 }
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225
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226
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227 }
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