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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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32
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12 module org.eclipse.jface.snippets.window.Snippet023TreeViewerCustomTooltips;
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13
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32
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14 import org.eclipse.jface.viewers.CellLabelProvider;
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15 import org.eclipse.jface.viewers.ITreeContentProvider;
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16 import org.eclipse.jface.viewers.LabelProvider;
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17 import org.eclipse.jface.viewers.TreeViewer;
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18 import org.eclipse.jface.viewers.Viewer;
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19 import org.eclipse.swt.SWT;
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20 import org.eclipse.swt.graphics.Point;
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21 import org.eclipse.swt.graphics.Rectangle;
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22 import org.eclipse.swt.layout.FillLayout;
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23 import org.eclipse.swt.widgets.Display;
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24 import org.eclipse.swt.widgets.Event;
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25 import org.eclipse.swt.widgets.Label;
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26 import org.eclipse.swt.widgets.Listener;
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27 import org.eclipse.swt.widgets.Shell;
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28 import org.eclipse.swt.widgets.TreeItem;
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31
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29
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32
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30 import java.lang.all;
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31 import java.util.ArrayList;
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32
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31
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33 import tango.text.convert.Format;
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34 import tango.util.log.Trace;
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35
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36 /**
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37 * A simple TreeViewer to demonstrate how custom tooltips could be created
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38 * easily. This is an extended version from
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32
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39 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet125.java
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31
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40 *
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41 * This code is for users pre 3.3 others could use newly added tooltip support in
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42 * {@link CellLabelProvider}
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43 *
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44 * @author Tom Schindl <tom.schindl@bestsolution.at>
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45 *
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46 */
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47 public class Snippet023TreeViewerCustomTooltips {
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48 private class MyContentProvider : ITreeContentProvider {
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49
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50 /*
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51 * (non-Javadoc)
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52 *
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53 * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
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31
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54 */
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55 public Object[] getElements(Object inputElement) {
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56 return (cast(MyModel) inputElement).child.toArray();
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57 }
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58
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59 /*
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60 * (non-Javadoc)
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61 *
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62 * @see org.eclipse.jface.viewers.IContentProvider#dispose()
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31
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63 */
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64 public void dispose() {
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65
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66 }
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67
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68 /*
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69 * (non-Javadoc)
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70 *
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71 * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer,
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72 * java.lang.Object, java.lang.Object)
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73 */
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74 public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
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75
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76 }
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77
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78 /*
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79 * (non-Javadoc)
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80 *
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81 * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
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82 */
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83 public Object[] getChildren(Object parentElement) {
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84 return getElements(parentElement);
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85 }
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86
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87 /*
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88 * (non-Javadoc)
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89 *
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90 * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
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91 */
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92 public Object getParent(Object element) {
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93 if (element is null) {
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94 return null;
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95 }
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96
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97 return (cast(MyModel) element).parent;
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98 }
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99
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100 /*
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101 * (non-Javadoc)
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102 *
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103 * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
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104 */
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105 public bool hasChildren(Object element) {
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106 return (cast(MyModel) element).child.size() > 0;
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107 }
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108
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109 }
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110
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111 public class MyModel {
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112 public MyModel parent;
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113
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114 public ArrayList child;
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115
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116 public int counter;
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117
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118 public this(int counter, MyModel parent) {
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119 this.parent = parent;
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120 this.counter = counter;
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121 child = new ArrayList();
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122 }
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123
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124 public String toString() {
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125 return Format( "Item {}{}", (parent !is null) ? "." : "", counter );
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126 }
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127 }
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128
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129 TreeViewer v;
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130 Listener labelListener;
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131
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132 public this(Shell shell) {
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133 v = new TreeViewer(shell);
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134 v.setLabelProvider(new LabelProvider());
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135 v.setContentProvider(new MyContentProvider());
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136 v.setInput(createModel());
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137 v.getTree().setToolTipText("");
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138
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139 labelListener = dgListener ( (Event event){
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140 Label label = cast(Label)event.widget;
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141 Shell shell_ = label.getShell ();
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142 switch (event.type) {
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143 case SWT.MouseDown:
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144 Event e = new Event ();
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145 e.item = cast(TreeItem) label.getData ("_TABLEITEM");
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146 // Assuming table is single select, set the selection as if
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147 // the mouse down event went through to the table
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148 v.getTree().setSelection ([cast(TreeItem) e.item]);
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149 v.getTree().notifyListeners (SWT.Selection, e);
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150 shell_.dispose ();
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151 v.getTree().setFocus();
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152 break;
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153 case SWT.MouseExit:
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154 shell_.dispose ();
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155 break;
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156 default:
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157 }
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158 });
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159
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160 Listener treeListener = new MyTreeListener();
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161 v.getTree().addListener (SWT.Dispose, treeListener);
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162 v.getTree().addListener (SWT.KeyDown, treeListener);
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163 v.getTree().addListener (SWT.MouseMove, treeListener);
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164 v.getTree().addListener (SWT.MouseHover, treeListener);
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165 }
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166
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167 class MyTreeListener : Listener {
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168 Shell tip = null;
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169 Label label = null;
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170 public void handleEvent (Event event) {
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171 switch (event.type) {
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172 case SWT.Dispose:
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173 case SWT.KeyDown:
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174 case SWT.MouseMove: {
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175 if (tip is null) break;
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176 tip.dispose ();
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177 tip = null;
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178 label = null;
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179 break;
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180 }
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181 case SWT.MouseHover: {
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182 Point coords = new Point(event.x, event.y);
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183 TreeItem item = v.getTree().getItem(coords);
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184 if (item !is null) {
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185 int columns = v.getTree().getColumnCount();
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186
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187 for (int i = 0; i < columns || i is 0; i++) {
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188 if (item.getBounds(i).contains(coords)) {
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189 if (tip !is null && !tip.isDisposed ()) tip.dispose ();
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190 tip = new Shell (v.getTree().getShell(), SWT.ON_TOP | SWT.NO_FOCUS | SWT.TOOL);
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191 tip.setBackground (v.getTree().getDisplay().getSystemColor (SWT.COLOR_INFO_BACKGROUND));
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192 FillLayout layout = new FillLayout ();
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193 layout.marginWidth = 2;
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194 tip.setLayout (layout);
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195 label = new Label (tip, SWT.NONE);
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196 label.setForeground (v.getTree().getDisplay().getSystemColor (SWT.COLOR_INFO_FOREGROUND));
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197 label.setBackground (v.getTree().getDisplay().getSystemColor (SWT.COLOR_INFO_BACKGROUND));
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198 label.setData ("_TABLEITEM", item);
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199 label.setText (Format("Tooltip: {} => {}", item.getData(), i));
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200 label.addListener (SWT.MouseExit, labelListener);
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201 label.addListener (SWT.MouseDown, labelListener);
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202 Point size = tip.computeSize (SWT.DEFAULT, SWT.DEFAULT);
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203 Rectangle rect = item.getBounds (i);
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204 Point pt = v.getTree().toDisplay (rect.x, rect.y);
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205 tip.setBounds (pt.x, pt.y, size.x, size.y);
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206 tip.setVisible (true);
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207 break;
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208 }
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209 }
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210 }
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211 }
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212 default:
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213 }
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214 }
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215 };
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216
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217 private MyModel createModel() {
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218
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219 MyModel root = new MyModel(0, null);
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220 root.counter = 0;
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221
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222 MyModel tmp;
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223 for (int i = 1; i < 10; i++) {
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224 tmp = new MyModel(i, root);
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225 root.child.add(tmp);
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226 for (int j = 1; j < i; j++) {
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227 tmp.child.add(new MyModel(j, tmp));
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228 }
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229 }
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230
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231 return root;
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232 }
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233
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234 public static void main(String[] args) {
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235 Display display = new Display();
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236 Shell shell = new Shell(display);
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237 shell.setLayout(new FillLayout());
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238 new Snippet023TreeViewerCustomTooltips(shell);
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239 shell.open();
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240
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241 while (!shell.isDisposed()) {
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242 if (!display.readAndDispatch())
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243 display.sleep();
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244 }
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245
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246 display.dispose();
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247 }
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248 }
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249
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250 void main(){
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251 Snippet023TreeViewerCustomTooltips.main(null);
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252 }
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253
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254
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