Mercurial > projects > dwt-addons
annotate dwtx/jface/viewers/ColumnViewerToolTipSupport.d @ 90:7ffeace6c47f
Update 3.4M7 to 3.4
| author | Frank Benoit <benoit@tionex.de> |
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| date | Sun, 06 Jul 2008 23:30:07 +0200 |
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| 10 | 1 /******************************************************************************* |
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2 * Copyright (c) 2006, 2008 IBM Corporation and others. |
| 10 | 3 * All rights reserved. This program and the accompanying materials |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 10 * Tom Schindl <tom.schindl@bestsolution.at> - initial API and implementation | |
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11 * bugfix in: 195137, 198089 |
| 10 | 12 * Fredy Dobler <fredy@dobler.net> - bug 159600 |
| 13 * Brock Janiczak <brockj@tpg.com.au> - bug 182443 | |
| 14 * Port to the D programming language: | |
| 15 * Frank Benoit <benoit@tionex.de> | |
| 16 *******************************************************************************/ | |
| 17 | |
| 18 module dwtx.jface.viewers.ColumnViewerToolTipSupport; | |
| 19 | |
| 20 import dwtx.jface.viewers.ColumnViewer; | |
| 21 import dwtx.jface.viewers.ViewerRow; | |
| 22 import dwtx.jface.viewers.ViewerColumn; | |
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23 import dwtx.jface.viewers.ViewerCell; |
| 10 | 24 import dwtx.jface.viewers.CellLabelProvider; |
| 25 import dwtx.jface.viewers.StructuredSelection; | |
| 26 | |
| 27 import dwt.graphics.Image; | |
| 28 import dwt.graphics.Point; | |
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29 import dwt.widgets.Composite; |
| 10 | 30 import dwt.widgets.Event; |
| 31 import dwtx.jface.util.Policy; | |
| 32 import dwtx.jface.window.DefaultToolTip; | |
| 33 import dwtx.jface.window.ToolTip; | |
| 34 | |
| 35 import dwt.dwthelper.utils; | |
| 36 | |
| 37 /** | |
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38 * The ColumnViewerTooltipSupport is the class that provides tool tips for |
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39 * ColumnViewers. |
| 10 | 40 * |
| 41 * @since 3.3 | |
| 42 * | |
| 43 */ | |
| 44 public class ColumnViewerToolTipSupport : DefaultToolTip { | |
| 45 private ColumnViewer viewer; | |
| 46 | |
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47 private static const String VIEWER_CELL_KEY = Policy.JFACE |
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48 ~ "_VIEWER_CELL_KEY"; //$NON-NLS-1$ |
| 10 | 49 |
| 50 private static const int DEFAULT_SHIFT_X = 10; | |
| 51 | |
| 52 private static const int DEFAULT_SHIFT_Y = 0; | |
| 53 | |
| 54 /** | |
| 55 * Enable ToolTip support for the viewer by creating an instance from this | |
| 56 * class. To get all necessary informations this support class consults the | |
| 57 * {@link CellLabelProvider}. | |
| 58 * | |
| 59 * @param viewer | |
| 60 * the viewer the support is attached to | |
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61 * @param style |
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62 * style passed to control tool tip behavior |
| 10 | 63 * |
| 64 * @param manualActivation | |
| 65 * <code>true</code> if the activation is done manually using | |
| 66 * {@link #show(Point)} | |
| 67 */ | |
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68 protected this(ColumnViewer viewer, int style, |
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69 bool manualActivation) { |
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70 super(viewer.getControl(), style, manualActivation); |
| 10 | 71 this.viewer = viewer; |
| 72 } | |
| 73 | |
| 74 /** | |
| 75 * Enable ToolTip support for the viewer by creating an instance from this | |
| 76 * class. To get all necessary informations this support class consults the | |
| 77 * {@link CellLabelProvider}. | |
| 78 * | |
| 79 * @param viewer | |
| 80 * the viewer the support is attached to | |
| 81 */ | |
| 82 public static void enableFor(ColumnViewer viewer) { | |
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83 new ColumnViewerToolTipSupport(viewer, ToolTip.NO_RECREATE, false); |
| 10 | 84 } |
| 85 | |
| 86 /** | |
| 87 * Enable ToolTip support for the viewer by creating an instance from this | |
| 88 * class. To get all necessary informations this support class consults the | |
| 89 * {@link CellLabelProvider}. | |
| 90 * | |
| 91 * @param viewer | |
| 92 * the viewer the support is attached to | |
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93 * @param style |
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94 * style passed to control tool tip behavior |
| 10 | 95 * |
| 96 * @see ToolTip#RECREATE | |
| 97 * @see ToolTip#NO_RECREATE | |
| 98 */ | |
| 99 public static void enableFor(ColumnViewer viewer, int style) { | |
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100 new ColumnViewerToolTipSupport(viewer, style, false); |
| 10 | 101 } |
| 102 | |
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103 protected override Object getToolTipArea(Event event) { |
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104 return viewer.getCell(new Point(event.x, event.y)); |
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105 } |
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106 |
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107 /** |
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108 * Instead of overwriting this method subclasses should overwrite |
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109 * {@link #createViewerToolTipContentArea(Event, ViewerCell, Composite)} |
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110 */ |
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111 protected Composite createToolTipContentArea(Event event, Composite parent) { |
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112 ViewerCell cell = cast(ViewerCell) getData(VIEWER_CELL_KEY); |
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113 setData(VIEWER_CELL_KEY, null); |
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114 |
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115 return createViewerToolTipContentArea(event, cell, parent); |
| 10 | 116 } |
| 117 | |
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118 /** |
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119 * Creates the content area of the tool tip giving access to the cell the |
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120 * tip is shown for. Subclasses can overload this method to implement their |
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121 * own tool tip design. |
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122 * |
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123 * <p> |
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124 * This method is called from |
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125 * {@link #createToolTipContentArea(Event, Composite)} and by default calls |
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126 * the {@link DefaultToolTip#createToolTipContentArea(Event, Composite)}. |
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127 * </p> |
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128 * |
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129 * @param event |
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130 * the event that which |
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131 * @param cell |
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132 * the cell the tool tip is shown for |
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133 * @param parent |
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134 * the parent of the control to create |
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135 * @return the control to be displayed in the tool tip area |
| 90 | 136 * @since 3.4 |
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137 */ |
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138 protected Composite createViewerToolTipContentArea(Event event, |
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139 ViewerCell cell, Composite parent) { |
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140 return super.createToolTipContentArea(event, parent); |
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141 } |
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142 |
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143 protected override bool shouldCreateToolTip(Event event) { |
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144 if (!super.shouldCreateToolTip(event)) { |
| 10 | 145 return false; |
| 146 } | |
| 147 | |
| 148 bool rv = false; | |
| 149 | |
| 150 ViewerRow row = viewer.getViewerRow_package(new Point(event.x, event.y)); | |
| 151 | |
| 152 viewer.getControl().setToolTipText(""); //$NON-NLS-1$ | |
| 153 Point point = new Point(event.x, event.y); | |
| 154 | |
| 155 if (row !is null) { | |
| 156 Object element = row.getItem().getData(); | |
| 157 | |
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158 ViewerCell cell = row.getCell(point); |
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159 ViewerColumn viewPart = viewer.getViewerColumn(cell |
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160 .getColumnIndex()); |
| 10 | 161 |
| 162 if (viewPart is null) { | |
| 163 return false; | |
| 164 } | |
| 165 | |
| 166 CellLabelProvider labelProvider = viewPart.getLabelProvider(); | |
| 167 bool useNative = labelProvider.useNativeToolTip(element); | |
| 168 | |
| 169 String text = labelProvider.getToolTipText(element); | |
| 170 Image img = null; | |
| 171 | |
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172 if (!useNative) { |
| 10 | 173 img = labelProvider.getToolTipImage(element); |
| 174 } | |
| 175 | |
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176 if (useNative || (text is null && img is null)) { |
| 10 | 177 viewer.getControl().setToolTipText(text); |
| 178 rv = false; | |
| 179 } else { | |
| 180 setPopupDelay(labelProvider.getToolTipDisplayDelayTime(element)); | |
| 181 setHideDelay(labelProvider.getToolTipTimeDisplayed(element)); | |
| 182 | |
| 183 Point shift = labelProvider.getToolTipShift(element); | |
| 184 | |
| 185 if (shift is null) { | |
| 186 setShift(new Point(DEFAULT_SHIFT_X, DEFAULT_SHIFT_Y)); | |
| 187 } else { | |
| 188 setShift(new Point(shift.x, shift.y)); | |
| 189 } | |
| 190 | |
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191 setData(VIEWER_CELL_KEY, cell); |
| 10 | 192 |
| 193 setText(text); | |
| 194 setImage(img); | |
| 195 setStyle(labelProvider.getToolTipStyle(element)); | |
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196 setForegroundColor(labelProvider |
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197 .getToolTipForegroundColor(element)); |
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198 setBackgroundColor(labelProvider |
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199 .getToolTipBackgroundColor(element)); |
| 10 | 200 setFont(labelProvider.getToolTipFont(element)); |
| 201 | |
| 202 // Check if at least one of the values is set | |
| 203 rv = getText(event) !is null || getImage(event) !is null; | |
| 204 } | |
| 205 } | |
| 206 | |
| 207 return rv; | |
| 208 } | |
| 209 | |
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210 protected override void afterHideToolTip(Event event) { |
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211 super.afterHideToolTip(event); |
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212 // Clear the restored value else this could be a source of a leak |
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213 setData(VIEWER_CELL_KEY, null); |
| 10 | 214 if (event !is null && event.widget !is viewer.getControl()) { |
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215 viewer.getControl().setFocus(); |
| 10 | 216 } |
| 217 } | |
| 218 } |