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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 *******************************************************************************/
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11
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12 module dwtx.jface.snippets.window.Snippet023TreeViewerCustomTooltips;
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13
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14 import dwtx.jface.viewers.CellLabelProvider;
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15 import dwtx.jface.viewers.ITreeContentProvider;
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16 import dwtx.jface.viewers.LabelProvider;
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17 import dwtx.jface.viewers.TreeViewer;
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18 import dwtx.jface.viewers.Viewer;
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19 import dwt.DWT;
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20 import dwt.graphics.Point;
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21 import dwt.graphics.Rectangle;
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22 import dwt.layout.FillLayout;
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23 import dwt.widgets.Display;
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24 import dwt.widgets.Event;
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25 import dwt.widgets.Label;
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26 import dwt.widgets.Listener;
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27 import dwt.widgets.Shell;
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28 import dwt.widgets.TreeItem;
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29
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30 import dwtx.dwtxhelper.Collection;
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31 import dwt.dwthelper.utils;
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32 import tango.text.convert.Format;
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33 import tango.util.log.Trace;
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34
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35 /**
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36 * A simple TreeViewer to demonstrate how custom tooltips could be created
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37 * easily. This is an extended version from
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38 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/dwt.snippets/src/org/eclipse/swt/snippets/Snippet125.java
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39 *
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40 * This code is for users pre 3.3 others could use newly added tooltip support in
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41 * {@link CellLabelProvider}
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42 *
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43 * @author Tom Schindl <tom.schindl@bestsolution.at>
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44 *
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45 */
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46 public class Snippet023TreeViewerCustomTooltips {
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47 private class MyContentProvider : ITreeContentProvider {
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48
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49 /*
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50 * (non-Javadoc)
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51 *
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52 * @see dwtx.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
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53 */
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54 public Object[] getElements(Object inputElement) {
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55 return (cast(MyModel) inputElement).child.toArray();
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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 *
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61 * @see dwtx.jface.viewers.IContentProvider#dispose()
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62 */
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63 public void dispose() {
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64
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65 }
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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.IContentProvider#inputChanged(dwtx.jface.viewers.Viewer,
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71 * java.lang.Object, java.lang.Object)
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72 */
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73 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
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74
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75 }
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76
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77 /*
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78 * (non-Javadoc)
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79 *
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80 * @see dwtx.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
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81 */
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82 public Object[] getChildren(Object parentElement) {
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83 return getElements(parentElement);
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84 }
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85
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86 /*
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87 * (non-Javadoc)
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88 *
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89 * @see dwtx.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
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90 */
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91 public Object getParent(Object element) {
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92 if (element is null) {
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93 return null;
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94 }
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95
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96 return (cast(MyModel) element).parent;
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97 }
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98
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99 /*
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100 * (non-Javadoc)
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101 *
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102 * @see dwtx.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
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103 */
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104 public bool hasChildren(Object element) {
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105 return (cast(MyModel) element).child.size() > 0;
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106 }
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107
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108 }
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109
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110 public class MyModel {
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111 public MyModel parent;
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112
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113 public ArrayList child;
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114
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115 public int counter;
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116
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117 public this(int counter, MyModel parent) {
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118 this.parent = parent;
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119 this.counter = counter;
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120 child = new ArrayList();
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121 }
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122
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123 public String toString() {
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124 return Format( "Item {}{}", (parent !is null) ? "." : "", counter );
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125 }
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126 }
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127
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128 TreeViewer v;
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129 Listener labelListener;
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130
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131 public this(Shell shell) {
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132 v = new TreeViewer(shell);
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133 v.setLabelProvider(new LabelProvider());
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134 v.setContentProvider(new MyContentProvider());
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135 v.setInput(createModel());
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136 v.getTree().setToolTipText("");
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137
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138 labelListener = dgListener ( (Event event){
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139 Label label = cast(Label)event.widget;
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140 Shell shell_ = label.getShell ();
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141 switch (event.type) {
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142 case DWT.MouseDown:
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143 Event e = new Event ();
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144 e.item = cast(TreeItem) label.getData ("_TABLEITEM");
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145 // Assuming table is single select, set the selection as if
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146 // the mouse down event went through to the table
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147 v.getTree().setSelection ([cast(TreeItem) e.item]);
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148 v.getTree().notifyListeners (DWT.Selection, e);
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149 shell_.dispose ();
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150 v.getTree().setFocus();
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151 break;
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152 case DWT.MouseExit:
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153 shell_.dispose ();
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154 break;
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155 default:
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156 }
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157 });
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158
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159 Listener treeListener = new MyTreeListener();
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160 v.getTree().addListener (DWT.Dispose, treeListener);
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161 v.getTree().addListener (DWT.KeyDown, treeListener);
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162 v.getTree().addListener (DWT.MouseMove, treeListener);
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163 v.getTree().addListener (DWT.MouseHover, treeListener);
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164 }
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165
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166 class MyTreeListener : Listener {
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167 Shell tip = null;
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168 Label label = null;
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169 public void handleEvent (Event event) {
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170 switch (event.type) {
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171 case DWT.Dispose:
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172 case DWT.KeyDown:
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173 case DWT.MouseMove: {
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174 if (tip is null) break;
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175 tip.dispose ();
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176 tip = null;
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177 label = null;
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178 break;
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179 }
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180 case DWT.MouseHover: {
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181 Point coords = new Point(event.x, event.y);
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182 TreeItem item = v.getTree().getItem(coords);
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183 if (item !is null) {
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184 int columns = v.getTree().getColumnCount();
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185
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186 for (int i = 0; i < columns || i is 0; i++) {
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187 if (item.getBounds(i).contains(coords)) {
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188 if (tip !is null && !tip.isDisposed ()) tip.dispose ();
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189 tip = new Shell (v.getTree().getShell(), DWT.ON_TOP | DWT.NO_FOCUS | DWT.TOOL);
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190 tip.setBackground (v.getTree().getDisplay().getSystemColor (DWT.COLOR_INFO_BACKGROUND));
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191 FillLayout layout = new FillLayout ();
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192 layout.marginWidth = 2;
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193 tip.setLayout (layout);
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194 label = new Label (tip, DWT.NONE);
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195 label.setForeground (v.getTree().getDisplay().getSystemColor (DWT.COLOR_INFO_FOREGROUND));
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196 label.setBackground (v.getTree().getDisplay().getSystemColor (DWT.COLOR_INFO_BACKGROUND));
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197 label.setData ("_TABLEITEM", item);
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198 label.setText (Format("Tooltip: {} => {}", item.getData(), i));
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199 label.addListener (DWT.MouseExit, labelListener);
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200 label.addListener (DWT.MouseDown, labelListener);
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201 Point size = tip.computeSize (DWT.DEFAULT, DWT.DEFAULT);
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202 Rectangle rect = item.getBounds (i);
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203 Point pt = v.getTree().toDisplay (rect.x, rect.y);
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204 tip.setBounds (pt.x, pt.y, size.x, size.y);
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205 tip.setVisible (true);
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206 break;
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207 }
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208 }
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209 }
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210 }
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211 default:
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212 }
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213 }
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214 };
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215
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216 private MyModel createModel() {
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217
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218 MyModel root = new MyModel(0, null);
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219 root.counter = 0;
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220
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221 MyModel tmp;
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222 for (int i = 1; i < 10; i++) {
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223 tmp = new MyModel(i, root);
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224 root.child.add(tmp);
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225 for (int j = 1; j < i; j++) {
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226 tmp.child.add(new MyModel(j, tmp));
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227 }
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228 }
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229
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230 return root;
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231 }
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232
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233 public static void main(String[] args) {
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234 Display display = new Display();
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235 Shell shell = new Shell(display);
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236 shell.setLayout(new FillLayout());
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237 new Snippet023TreeViewerCustomTooltips(shell);
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238 shell.open();
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239
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240 while (!shell.isDisposed()) {
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241 if (!display.readAndDispatch())
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242 display.sleep();
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243 }
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244
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245 display.dispose();
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246 }
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247 }
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248
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249 void main(){
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250 Snippet023TreeViewerCustomTooltips.main(null);
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251 }
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252
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253
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