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annotate jface/snippets/viewers/Snippet031TableViewerCustomTooltipsMultiSelection.d @ 145:161f7698cfb8

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Moved jface snippets to viewers subpackage, there are more with conflicting numbers for other packages
author Frank Benoit <benoit@tionex.de>
date Fri, 08 Aug 2008 14:40:21 +0200
parents jface/snippets/Snippet031TableViewerCustomTooltipsMultiSelection.d@42c3056512ba
children
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1 /*******************************************************************************
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2 * Copyright (c) 2007 Adam Neal 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 * Adam Neal - 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 snippets.viewers.Snippet031TableViewerCustomTooltipsMultiSelection;
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16 // 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 import dwtx.dwtxhelper.Collection;
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19 import tango.util.Convert;
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20
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21 import dwtx.jface.viewers.ArrayContentProvider;
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22 import dwtx.jface.viewers.ILabelProviderListener;
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23 import dwtx.jface.viewers.ITableLabelProvider;
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24 import dwtx.jface.viewers.TableViewer;
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25 import dwt.DWT;
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26 import dwt.graphics.Image;
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27 import dwt.graphics.Point;
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28 import dwt.graphics.Rectangle;
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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.Event;
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32 import dwt.widgets.Label;
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33 import dwt.widgets.Listener;
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34 import dwt.widgets.Shell;
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35 import dwt.widgets.Table;
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36 import dwt.widgets.TableColumn;
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37 import dwt.widgets.TableItem;
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38 import dwt.dwthelper.System;
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39 import dwt.widgets.Listener;
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40
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41 alias char[] String;
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42 void main(String[] args)
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43 {
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44 Snippet031TableViewerCustomTooltipsMultiSelection.main(args);
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45 }
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46
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47 /**
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48 * A simple TableViewer to demonstrate how custom tooltips could be created easily while preserving
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49 * the multiple selection.
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50 *
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51 * This is a modified example taken from Tom Schindl's Snippet023TreeViewerCustomTooltips.java
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52 *
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53 * This code is for users pre 3.3 others could use newly added tooltip support in {@link CellLabelProvider}
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54 * @author Adam Neal <Adam_Neal@ca.ibm.com>
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55 *
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56 */
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57 public class Snippet031TableViewerCustomTooltipsMultiSelection {
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58 public class MyLableProvider : ITableLabelProvider {
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59
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60 public Image getColumnImage(Object element, int columnIndex) {
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61 return null;
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62 }
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63
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64 public String getColumnText(Object element, int columnIndex) {
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65 //if (element instanceof MyModel) {
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66 switch (columnIndex) {
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67 case 0: return (cast(MyModel)element).col1;
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68 case 1: return (cast(MyModel)element).col2;
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69 }
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70 //}
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71
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72 return "";
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73 }
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74
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75 public void addListener(ILabelProviderListener listener) {
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76 /* Ignore */
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77 }
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78
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79 public void dispose() {
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80 /* Ignore */
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81 }
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82
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83 public bool isLabelProperty(Object element, String property) {
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84 return false;
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85 }
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86
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87 public void removeListener(ILabelProviderListener listener) {
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88 /* Ignore */
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89 }
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90
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91 }
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93
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94
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95 public this(Shell shell) {
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96
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97
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98 final Table table = new Table(shell, DWT.H_SCROLL | DWT.V_SCROLL | DWT.MULTI | DWT.FULL_SELECTION);
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99 table.setHeaderVisible(true);
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100 table.setLinesVisible(true);
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101
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102 final TableViewer v = new TableViewer(table);
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103 TableColumn tableColumn1 = new TableColumn(table, DWT.NONE);
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104 TableColumn tableColumn2 = new TableColumn(table, DWT.NONE);
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105
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106 String column1 = "Column 1", column2 = "Column 2";
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107 /* Setup the table columns */
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108 tableColumn1.setText(column1);
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109 tableColumn2.setText(column2);
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110 tableColumn1.pack();
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111 tableColumn2.pack();
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112
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113 v.setColumnProperties([ column1, column2 ]);
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114 v.setLabelProvider(new MyLableProvider());
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115 v.setContentProvider(new ArrayContentProvider!(MyModel));
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116 v.setInput(createModel());
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118 tooltipLabelListener = new TooltipLabelListener();
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119
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120 /**
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121 * The listener that gets added to the table. This listener is responsible for creating the tooltips
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122 * when hovering over a cell item. This listener will listen for the following events:
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123 * <li>DWT.KeyDown - to remove the tooltip</li>
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124 * <li>DWT.Dispose - to remove the tooltip</li>
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125 * <li>DWT.MouseMove - to remove the tooltip</li>
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126 * <li>DWT.MouseHover - to set the tooltip</li>
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127 */
92
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128
93
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129 Listener tableListener = dgListener(&handleTableListener, table);
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130
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131 table.addListener (DWT.Dispose, tableListener);
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132 table.addListener (DWT.KeyDown, tableListener);
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133 table.addListener (DWT.MouseMove, tableListener);
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134 table.addListener (DWT.MouseHover, tableListener);
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135 }
92
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136
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137 void handleTableListener(Event event, Table table)
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138 {
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139 Shell tooltip = null;
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140 Label label = null;
93
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141
92
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142 /*
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143 * (non-Javadoc)
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144 * @see dwt.widgets.Listener#handleEvent(dwt.widgets.Event)
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145 */
93
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146 switch (event.type) {
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147 case DWT.KeyDown:
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148 case DWT.Dispose:
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149 case DWT.MouseMove: {
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150 if (tooltip is null) break;
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151 tooltip.dispose ();
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152 tooltip = null;
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153 label = null;
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154 break;
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155 }
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156 case DWT.MouseHover: {
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157 Point coords = new Point(event.x, event.y);
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158 TableItem item = table.getItem(coords);
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159 if (item !is null) {
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160 int columnCount = table.getColumnCount();
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161 for (int columnIndex = 0; columnIndex < columnCount; columnIndex++) {
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162 if (item.getBounds(columnIndex).contains(coords)) {
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163 /* Dispose of the old tooltip (if one exists */
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164 if (tooltip !is null && !tooltip.isDisposed ()) tooltip.dispose ();
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165
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166 /* Create a new Tooltip */
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167 tooltip = new Shell (table.getShell(), DWT.ON_TOP | DWT.NO_FOCUS | DWT.TOOL);
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168 tooltip.setBackground (table.getDisplay().getSystemColor (DWT.COLOR_INFO_BACKGROUND));
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169 FillLayout layout = new FillLayout ();
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170 layout.marginWidth = 2;
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171 tooltip.setLayout (layout);
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172 label = new Label (tooltip, DWT.NONE);
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173 label.setForeground (table.getDisplay().getSystemColor (DWT.COLOR_INFO_FOREGROUND));
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174 label.setBackground (table.getDisplay().getSystemColor (DWT.COLOR_INFO_BACKGROUND));
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175
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176 /* Store the TableItem with the label so we can pass the mouse event later */
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177 label.setData ("_TableItem_", item);
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178
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179 /* Set the tooltip text */
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180 label.setText("Tooltip: " ~ to!(char[])(item.getData()) ~ " : " ~ to!(char[])(columnIndex));
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181
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182 /* Setup Listeners to remove the tooltip and transfer the received mouse events */
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183 label.addListener (DWT.MouseExit, tooltipLabelListener);
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184 label.addListener (DWT.MouseDown, tooltipLabelListener);
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185
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186 /* Set the size and position of the tooltip */
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187 Point size = tooltip.computeSize (DWT.DEFAULT, DWT.DEFAULT);
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188 Rectangle rect = item.getBounds (columnIndex);
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189 Point pt = table.toDisplay (rect.x, rect.y);
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190 tooltip.setBounds (pt.x, pt.y, size.x, size.y);
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191
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192 /* Show it */
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193 tooltip.setVisible (true);
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194 break;
92
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195 }
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196 }
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197 }
93
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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 * This listener is added to the tooltip so that it can either dispose itself if the mouse
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204 * exits the tooltip or so it can pass the selection event through to the table.
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205 */
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206 final TooltipLabelListener tooltipLabelListener;
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207 final class TooltipLabelListener : Listener {
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208 private bool isCTRLDown(Event e) {
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209 return (e.stateMask & DWT.CTRL) != 0;
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210 }
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211 /*
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212 * (non-Javadoc)
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213 * @see dwt.widgets.Listener#handleEvent(dwt.widgets.Event)
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214 */
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215 public void handleEvent (Event event) {
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216 Label label = cast(Label)event.widget;
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217 Shell shell = label.getShell ();
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218 switch (event.type) {
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219 case DWT.MouseDown: /* Handle a user Click */
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220 /* Extract our Data */
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221 Event e = new Event ();
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222 e.item = cast(TableItem) label.getData ("_TableItem_");
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223 Table table = (cast(TableItem) e.item).getParent();
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224
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225 /* Construct the new Selection[] to show */
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226 TableItem [] newSelection = null;
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227 if (isCTRLDown(event)) {
143
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228 /* We have 2 scenario's.
93
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229 * 1) We are selecting an already selected element - so remove it from the selected indices
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230 * 2) We are selecting a non-selected element - so add it to the selected indices
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231 */
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232 TableItem[] sel = table.getSelection();
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233 for (int i = 0; i < sel.length; ++i) {
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234 //if (e.item.equals(sel[i])) {
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235 if (e.item is sel[i]) {
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236 // We are de-selecting this element
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237 newSelection = new TableItem[sel.length - 1];
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238 System.arraycopy(sel, 0, newSelection, 0, i);
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239 System.arraycopy(sel, i+1, newSelection, i, sel.length - i - 1);
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240 break;
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241 }
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242 }
92
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243
93
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244 /*
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245 * If we haven't created the newSelection[] yet, than we are adding the newly selected element
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246 * into the list of selected indicies
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247 */
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248 if (newSelection is null) {
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249 newSelection = new TableItem[sel.length + 1];
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250 System.arraycopy(sel, 0, newSelection, 0, sel.length);
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251 newSelection[sel.length] = cast(TableItem) e.item;
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252 }
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253
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254 } else {
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255 /* CTRL is not down, so we simply select the single element */
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256 newSelection = [ cast(TableItem) e.item ];
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257 }
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258 /* Set the new selection of the table and notify the listeners */
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diff changeset
259 table.setSelection (newSelection);
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260 table.notifyListeners (DWT.Selection, e);
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261
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262 /* Remove the Tooltip */
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263 shell.dispose ();
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264 table.setFocus();
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265 break;
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266 case DWT.MouseExit:
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267 shell.dispose ();
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268 break;
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269 }
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270 }
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271 }
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272
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273
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274 private ArrayList createModel() {
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275 ArrayList list = new ArrayList;
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276 list.add(new MyModel("A", "B"));
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277 list.add(new MyModel("C", "D"));
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278 list.add(new MyModel("E", "F"));
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279 return list;
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280 }
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281
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282 public static void main(String[] args) {
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283 Display display = new Display();
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284 Shell shell = new Shell(display);
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285 shell.setLayout(new FillLayout());
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286 new Snippet031TableViewerCustomTooltipsMultiSelection(shell);
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287 shell.open();
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288
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289 while (!shell.isDisposed()) {
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290 if (!display.readAndDispatch())
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291 display.sleep();
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292 }
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293
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294 display.dispose();
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295 }
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296 }
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297
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298 public class MyModel {
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299 public String col1, col2;
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300
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301 public this(String c1, String c2) {
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302 col1 = c1;
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303 col2 = c2;
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304 }
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305
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306 public String toString() {
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307 return col1 ~ col2;
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308 }
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309 }
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310