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annotate jface/snippets/Snippet031TableViewerCustomTooltipsMultiSelection.d @ 92:f5c5b4bf7971

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added jface.snippets.Snippet031TableViewerCustomTooltipsMultiSelection
author yidabu <yidabu@gmail.com>
date Fri, 23 May 2008 07:53:22 +0800
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children bf8adb3de664
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92
f5c5b4bf7971 added jface.snippets.Snippet031TableViewerCustomTooltipsMultiSelection
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1 module jface.snippets.Snippet031TableViewerCustomTooltipsMultiSelection;
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2
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3 /*******************************************************************************
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4 * Copyright (c) 2007 Adam Neal and others.
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5 * All rights reserved. This program and the accompanying materials
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6 * are made available under the terms of the Eclipse Public License v1.0
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7 * which accompanies this distribution, and is available at
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8 * http://www.eclipse.org/legal/epl-v10.html
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9 *
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10 * Contributors:
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11 * Adam Neal - initial API and implementation
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12 * Port to the D programming language:
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13 * yidabu at gmail dot com ( D China http://www.d-programming-language-china.org/ )
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14 *******************************************************************************/
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16
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17 // http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.jface.snippets/Eclipse%20JFace%20Snippets/org/eclipse/jface/snippets/viewers/Snippet031TableViewerCustomTooltipsMultiSelection.java?view=markup
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18
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19 import tango.util.collection.ArrayBag;
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20 alias ArrayBag!(MyModel) ArrayList;
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21 import tango.util.Convert;
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22
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23 import dwtx.jface.viewers.ArrayContentProvider;
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24 import dwtx.jface.viewers.ILabelProviderListener;
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25 import dwtx.jface.viewers.ITableLabelProvider;
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26 import dwtx.jface.viewers.TableViewer;
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27 import dwt.DWT;
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28 import dwt.graphics.Image;
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29 import dwt.graphics.Point;
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30 import dwt.graphics.Rectangle;
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31 import dwt.layout.FillLayout;
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32 import dwt.widgets.Display;
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33 import dwt.widgets.Event;
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34 import dwt.widgets.Label;
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35 import dwt.widgets.Listener;
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36 import dwt.widgets.Shell;
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37 import dwt.widgets.Table;
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38 import dwt.widgets.TableColumn;
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39 import dwt.widgets.TableItem;
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40 import dwt.dwthelper.System;
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41 import dwt.widgets.Listener;
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42
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43 alias char[] String;
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44 void main(String[] args)
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45 {
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46 Snippet031TableViewerCustomTooltipsMultiSelection.main(args);
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47 }
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48
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49 /**
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50 * A simple TableViewer to demonstrate how custom tooltips could be created easily while preserving
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51 * the multiple selection.
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52 *
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53 * This is a modified example taken from Tom Schindl's Snippet023TreeViewerCustomTooltips.java
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54 *
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55 * This code is for users pre 3.3 others could use newly added tooltip support in {@link CellLabelProvider}
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56
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57 * @author Adam Neal <Adam_Neal@ca.ibm.com>
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58 *
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59 */
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60 public class Snippet031TableViewerCustomTooltipsMultiSelection {
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61 public class MyLableProvider : ITableLabelProvider {
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62
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63 public Image getColumnImage(Object element, int columnIndex) {
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64 return null;
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65 }
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66
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67 public String getColumnText(Object element, int columnIndex) {
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68 //if (element instanceof MyModel) {
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69 switch (columnIndex) {
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70 case 0: return (cast(MyModel)element).col1;
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71 case 1: return (cast(MyModel)element).col2;
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72 }
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73 //}
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74
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75 return "";
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76 }
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77
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78 public void addListener(ILabelProviderListener listener) {
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79 /* Ignore */
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80 }
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81
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82 public void dispose() {
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83 /* Ignore */
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84 }
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85
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86 public bool isLabelProperty(Object element, String property) {
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87 return false;
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88 }
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89
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90 public void removeListener(ILabelProviderListener listener) {
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91 /* Ignore */
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92 }
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93
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94 }
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97
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98 public this(Shell shell) {
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99
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100
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101 final Table table = new Table(shell, DWT.H_SCROLL | DWT.V_SCROLL | DWT.MULTI | DWT.FULL_SELECTION);
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102 table.setHeaderVisible(true);
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103 table.setLinesVisible(true);
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104
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105 final TableViewer v = new TableViewer(table);
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106 TableColumn tableColumn1 = new TableColumn(table, DWT.NONE);
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107 TableColumn tableColumn2 = new TableColumn(table, DWT.NONE);
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108
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109 String column1 = "Column 1", column2 = "Column 2";
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110 /* Setup the table columns */
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111 tableColumn1.setText(column1);
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112 tableColumn2.setText(column2);
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113 tableColumn1.pack();
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114 tableColumn2.pack();
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115
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116 v.setColumnProperties([ column1, column2 ]);
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117 v.setLabelProvider(new MyLableProvider());
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118 v.setContentProvider(new ArrayContentProvider!(MyModel));
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119 v.setInput(createModel());
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120
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121 tooltipLabelListener = new TooltipLabelListener();
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122
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123 /**
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124 * The listener that gets added to the table. This listener is responsible for creating the tooltips
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125 * when hovering over a cell item. This listener will listen for the following events:
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126 * <li>DWT.KeyDown - to remove the tooltip</li>
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127 * <li>DWT.Dispose - to remove the tooltip</li>
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128 * <li>DWT.MouseMove - to remove the tooltip</li>
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129 * <li>DWT.MouseHover - to set the tooltip</li>
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130 */
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131
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132 Listener tableListener = dgListener(&handleTableListener, table);
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133
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134 table.addListener (DWT.Dispose, tableListener);
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135 table.addListener (DWT.KeyDown, tableListener);
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136 table.addListener (DWT.MouseMove, tableListener);
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137 table.addListener (DWT.MouseHover, tableListener);
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138 }
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139
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140 void handleTableListener(Event event, Table table)
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141 {
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142 Shell tooltip = null;
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143 Label label = null;
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144
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145 /*
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146 * (non-Javadoc)
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147 * @see dwt.widgets.Listener#handleEvent(dwt.widgets.Event)
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148 */
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149 switch (event.type) {
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150 case DWT.KeyDown:
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151 case DWT.Dispose:
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152 case DWT.MouseMove: {
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153 if (tooltip is null) break;
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154 tooltip.dispose ();
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155 tooltip = null;
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156 label = null;
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157 break;
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158 }
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159 case DWT.MouseHover: {
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160 Point coords = new Point(event.x, event.y);
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161 TableItem item = table.getItem(coords);
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162 if (item !is null) {
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163 int columnCount = table.getColumnCount();
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164 for (int columnIndex = 0; columnIndex < columnCount; columnIndex++) {
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165 if (item.getBounds(columnIndex).contains(coords)) {
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166 /* Dispose of the old tooltip (if one exists */
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167 if (tooltip !is null && !tooltip.isDisposed ()) tooltip.dispose ();
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168
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169 /* Create a new Tooltip */
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170 tooltip = new Shell (table.getShell(), DWT.ON_TOP | DWT.NO_FOCUS | DWT.TOOL);
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171 tooltip.setBackground (table.getDisplay().getSystemColor (DWT.COLOR_INFO_BACKGROUND));
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172 FillLayout layout = new FillLayout ();
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173 layout.marginWidth = 2;
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174 tooltip.setLayout (layout);
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175 label = new Label (tooltip, DWT.NONE);
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176 label.setForeground (table.getDisplay().getSystemColor (DWT.COLOR_INFO_FOREGROUND));
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177 label.setBackground (table.getDisplay().getSystemColor (DWT.COLOR_INFO_BACKGROUND));
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178
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179 /* Store the TableItem with the label so we can pass the mouse event later */
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180 label.setData ("_TableItem_", item);
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181
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182 /* Set the tooltip text */
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183 label.setText("Tooltip: " ~ to!(char[])(item.getData()) ~ " : " ~ to!(char[])(columnIndex));
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184
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185 /* Setup Listeners to remove the tooltip and transfer the received mouse events */
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186 label.addListener (DWT.MouseExit, tooltipLabelListener);
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187 label.addListener (DWT.MouseDown, tooltipLabelListener);
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188
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189 /* Set the size and position of the tooltip */
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190 Point size = tooltip.computeSize (DWT.DEFAULT, DWT.DEFAULT);
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191 Rectangle rect = item.getBounds (columnIndex);
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192 Point pt = table.toDisplay (rect.x, rect.y);
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193 tooltip.setBounds (pt.x, pt.y, size.x, size.y);
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194
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195 /* Show it */
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196 tooltip.setVisible (true);
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197 break;
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198 }
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199 }
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200 }
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201 }
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202 }
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203
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204 }
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205
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206 /**
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207 * This listener is added to the tooltip so that it can either dispose itself if the mouse
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208 * exits the tooltip or so it can pass the selection event through to the table.
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209 */
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210 final TooltipLabelListener tooltipLabelListener;
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211 final class TooltipLabelListener : Listener {
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212 private bool isCTRLDown(Event e) {
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213 return (e.stateMask & DWT.CTRL) != 0;
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214 }
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215 /*
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216 * (non-Javadoc)
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217 * @see dwt.widgets.Listener#handleEvent(dwt.widgets.Event)
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218 */
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219 public void handleEvent (Event event) {
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220 Label label = cast(Label)event.widget;
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221 Shell shell = label.getShell ();
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222 switch (event.type) {
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223 case DWT.MouseDown: /* Handle a user Click */
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224 /* Extract our Data */
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225 Event e = new Event ();
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226 e.item = cast(TableItem) label.getData ("_TableItem_");
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227 Table table = (cast(TableItem) e.item).getParent();
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228
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229 /* Construct the new Selection[] to show */
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230 TableItem [] newSelection = null;
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231 if (isCTRLDown(event)) {
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232 /* We have 2 scenario's.
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233 * 1) We are selecting an already selected element - so remove it from the selected indices
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234 * 2) We are selecting a non-selected element - so add it to the selected indices
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235 */
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236 TableItem[] sel = table.getSelection();
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237 for (int i = 0; i < sel.length; ++i) {
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238 //if (e.item.equals(sel[i])) {
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239 if (e.item is sel[i]) {
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240 // We are de-selecting this element
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241 newSelection = new TableItem[sel.length - 1];
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242 System.arraycopy(sel, 0, newSelection, 0, i);
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243 System.arraycopy(sel, i+1, newSelection, i, sel.length - i - 1);
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244 break;
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245 }
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246 }
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247
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248 /*
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249 * If we haven't created the newSelection[] yet, than we are adding the newly selected element
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250 * into the list of selected indicies
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251 */
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252 if (newSelection is null) {
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253 newSelection = new TableItem[sel.length + 1];
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254 System.arraycopy(sel, 0, newSelection, 0, sel.length);
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255 newSelection[sel.length] = cast(TableItem) e.item;
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256 }
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257
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258 } else {
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259 /* CTRL is not down, so we simply select the single element */
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260 newSelection = [ cast(TableItem) e.item ];
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261 }
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262 /* Set the new selection of the table and notify the listeners */
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263 table.setSelection (newSelection);
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264 table.notifyListeners (DWT.Selection, e);
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265
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266 /* Remove the Tooltip */
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267 shell.dispose ();
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268 table.setFocus();
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269 break;
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270 case DWT.MouseExit:
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271 shell.dispose ();
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272 break;
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273 }
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274 }}
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275
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276
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277 private ArrayList createModel() {
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278 ArrayList list = new ArrayList;
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279 list.add(new MyModel("A", "B"));
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280 list.add(new MyModel("C", "D"));
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281 list.add(new MyModel("E", "F"));
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282 return list;
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283 }
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284
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285 public static void main(String[] args) {
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286 Display display = new Display();
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287 Shell shell = new Shell(display);
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288 shell.setLayout(new FillLayout());
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289 new Snippet031TableViewerCustomTooltipsMultiSelection(shell);
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290 shell.open();
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291
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292 while (!shell.isDisposed()) {
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293 if (!display.readAndDispatch())
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294 display.sleep();
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295 }
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296
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297 display.dispose();
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298 }
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299 }
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300
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301 public class MyModel {
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302 public String col1, col2;
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303
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304 public this(String c1, String c2) {
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305 col1 = c1;
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306 col2 = c2;
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307 }
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308
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309 public String toString() {
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310 return col1 ~ col2;
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311 }
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312
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313 }