annotate org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/custom/TreeEditor.d @ 120:536e43f63c81

Comprehensive update for Win32/Linux32 dmd-2.053/dmd-1.068+Tango-r5661 ===D2=== * added [Try]Immutable/Const/Shared templates to work with differenses in D1/D2 instead of version statements used these templates to work with strict type storage rules of dmd-2.053 * com.ibm.icu now also compilable with D2, but not tested yet * small fixes Snippet288 - shared data is in TLS ===Phobos=== * fixed critical bugs in Phobos implemention completely incorrect segfault prone fromStringz (Linux's port ruthless killer) terrible, incorrect StringBuffer realization (StyledText killer) * fixed small bugs as well Snippet72 - misprint in the snippet * implemented missed functionality for Phobos ByteArrayOutputStream implemented (image loading available) formatting correctly works for all DWT's cases As a result, folowing snippets now works with Phobos (Snippet### - what is fixed): Snippet24, 42, 111, 115, 130, 235, 276 - bad string formatting Snippet48, 282 - crash on image loading Snippet163, 189, 211, 213, 217, 218, 222 - crash on copy/cut in StyledText Snippet244 - hang-up ===Tango=== * few changes for the latest Tango trunc-r5661 * few small performance improvments ===General=== * implMissing-s for only one version changed to implMissingInTango/InPhobos * incorrect calls to Format in toString-s fixed * fixed loading \uXXXX characters in ResourceBundle * added good UTF-8 support for StyledText, TextLayout (Win32) and friends UTF functions revised and tested. It is now in java.nonstandard.*Utf modules StyledText and TextLayout (Win32) modules revised for UTF-8 support * removed small diferences in most identical files in *.swt.* folders *.swt.internal.image, *.swt.events and *.swt.custom are identical in Win32/Linux32 now 179 of 576 (~31%) files in *.swt.* folders are fully identical * Win32: snippets now have right subsystem, pretty icons and native system style controls * small fixes in snippets Snippet44 - it's not Snippet44 Snippet212 - functions work with different images and offsets arrays Win32: Snippet282 - crash on close if the button has an image Snippet293 - setGrayed is commented and others Win32: As a result, folowing snippets now works Snippet68 - color doesn't change Snippet163, 189, 211, 213, 217, 218, 222 - UTF-8 issues (see above) Snippet193 - no tabel headers
author Denis Shelomovskij <verylonglogin.reg@gmail.com>
date Sat, 09 Jul 2011 15:50:20 +0300
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2008 IBM Corporation 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 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module org.eclipse.swt.custom.TreeEditor;
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14
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15 import java.lang.all;
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16
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17
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18 import org.eclipse.swt.SWT;
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19 import org.eclipse.swt.events.ControlEvent;
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20 import org.eclipse.swt.events.ControlListener;
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21 import org.eclipse.swt.events.TreeEvent;
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22 import org.eclipse.swt.events.TreeListener;
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23 import org.eclipse.swt.graphics.Rectangle;
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24 import org.eclipse.swt.widgets.Control;
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25 import org.eclipse.swt.widgets.Display;
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26 import org.eclipse.swt.widgets.Tree;
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27 import org.eclipse.swt.widgets.TreeColumn;
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28 import org.eclipse.swt.widgets.TreeItem;
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29 import org.eclipse.swt.custom.ControlEditor;
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30
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31 /**
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32 *
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33 * A TreeEditor is a manager for a Control that appears above a cell in a Tree and tracks with the
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34 * moving and resizing of that cell. It can be used to display a text widget above a cell
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35 * in a Tree so that the user can edit the contents of that cell. It can also be used to display
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36 * a button that can launch a dialog for modifying the contents of the associated cell.
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37 *
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38 * <p> Here is an example of using a TreeEditor:
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39 * <code><pre>
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40 * final Tree tree = new Tree(shell, SWT.BORDER);
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41 * for (int i = 0; i &lt; 3; i++) {
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42 * TreeItem item = new TreeItem(tree, SWT.NONE);
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43 * item.setText("item " + i);
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44 * for (int j = 0; j &lt; 3; j++) {
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45 * TreeItem subItem = new TreeItem(item, SWT.NONE);
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46 * subItem.setText("item " + i + " " + j);
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47 * }
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48 * }
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49 *
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50 * final TreeEditor editor = new TreeEditor(tree);
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51 * //The editor must have the same size as the cell and must
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52 * //not be any smaller than 50 pixels.
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53 * editor.horizontalAlignment = SWT.LEFT;
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54 * editor.grabHorizontal = true;
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55 * editor.minimumWidth = 50;
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56 *
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57 * tree.addSelectionListener(new SelectionAdapter() {
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58 * public void widgetSelected(SelectionEvent e) {
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59 * // Clean up any previous editor control
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60 * Control oldEditor = editor.getEditor();
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61 * if (oldEditor !is null) oldEditor.dispose();
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62 *
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63 * // Identify the selected row
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64 * TreeItem item = (TreeItem)e.item;
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65 * if (item is null) return;
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66 *
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67 * // The control that will be the editor must be a child of the Tree
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68 * Text newEditor = new Text(tree, SWT.NONE);
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69 * newEditor.setText(item.getText());
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70 * newEditor.addModifyListener(new ModifyListener() {
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71 * public void modifyText(ModifyEvent e) {
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72 * Text text = (Text)editor.getEditor();
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73 * editor.getItem().setText(text.getText());
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74 * }
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75 * });
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76 * newEditor.selectAll();
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77 * newEditor.setFocus();
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78 * editor.setEditor(newEditor, item);
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79 * }
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80 * });
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81 * </pre></code>
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82 *
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83 * @see <a href="http://www.eclipse.org/swt/snippets/#treeeditor">TreeEditor snippets</a>
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84 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
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85 */
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86
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87 public class TreeEditor : ControlEditor {
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88 Tree tree;
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89 TreeItem item;
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90 int column = 0;
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91 ControlListener columnListener;
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92 TreeListener treeListener;
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93 Runnable timer;
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94 static const int TIMEOUT = 1500;
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95
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96 /**
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97 * Creates a TreeEditor for the specified Tree.
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98 *
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99 * @param tree the Tree Control above which this editor will be displayed
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100 *
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101 */
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102 public this (Tree tree) {
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103 super(tree);
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104 this.tree = tree;
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105
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106 columnListener = new class() ControlListener {
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107 public void controlMoved(ControlEvent e){
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108 layout();
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109 }
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110 public void controlResized(ControlEvent e){
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111 layout();
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112 }
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113 };
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114 timer = new class() Runnable {
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115 public void run() {
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116 layout ();
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117 }
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118 };
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119 treeListener = new class() TreeListener {
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120 Runnable runnable;
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121 this(){
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122 runnable = new class() Runnable {
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123 public void run() {
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124 if (this.outer.outer.editor is null || this.outer.outer.editor.isDisposed()) return;
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125 if (this.outer.outer.tree.isDisposed()) return;
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126 layout();
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127 this.outer.outer.editor.setVisible(true);
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128 }
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129 };
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130 }
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131 public void treeCollapsed(TreeEvent e) {
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132 if (this.outer.editor is null || this.outer.editor.isDisposed ()) return;
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133 this.outer.editor.setVisible(false);
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134 e.display.asyncExec(runnable);
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135 }
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136 public void treeExpanded(TreeEvent e) {
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137 if (this.outer.editor is null || this.outer.editor.isDisposed ()) return;
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138 this.outer.editor.setVisible(false);
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139 e.display.asyncExec(runnable);
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140 }
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141 };
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142 tree.addTreeListener(treeListener);
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143
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144 // To be consistent with older versions of SWT, grabVertical defaults to true
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145 grabVertical = true;
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146 }
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147
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148 override Rectangle computeBounds () {
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149 if (item is null || column is -1 || item.isDisposed()) return new Rectangle(0, 0, 0, 0);
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150 Rectangle cell = item.getBounds(column);
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151 Rectangle rect = item.getImageBounds(column);
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152 cell.x = rect.x + rect.width;
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153 cell.width -= rect.width;
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154 Rectangle area = tree.getClientArea();
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155 if (cell.x < area.x + area.width) {
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156 if (cell.x + cell.width > area.x + area.width) {
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157 cell.width = area.x + area.width - cell.x;
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158 }
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159 }
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160 Rectangle editorRect = new Rectangle(cell.x, cell.y, minimumWidth, minimumHeight);
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161
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162 if (grabHorizontal) {
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163 if (tree.getColumnCount() is 0) {
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164 // Bounds of tree item only include the text area - stretch out to include
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165 // entire client area
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166 cell.width = area.x + area.width - cell.x;
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167 }
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168 editorRect.width = Math.max(cell.width, minimumWidth);
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169 }
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170
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171 if (grabVertical) {
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172 editorRect.height = Math.max(cell.height, minimumHeight);
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173 }
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174
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175 if (horizontalAlignment is SWT.RIGHT) {
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176 editorRect.x += cell.width - editorRect.width;
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177 } else if (horizontalAlignment is SWT.LEFT) {
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178 // do nothing - cell.x is the right answer
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179 } else { // default is CENTER
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180 editorRect.x += (cell.width - editorRect.width)/2;
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181 }
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182 // don't let the editor overlap with the + / - of the tree
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183 editorRect.x = Math.max(cell.x, editorRect.x);
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184
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185 if (verticalAlignment is SWT.BOTTOM) {
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186 editorRect.y += cell.height - editorRect.height;
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187 } else if (verticalAlignment is SWT.TOP) {
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188 // do nothing - cell.y is the right answer
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189 } else { // default is CENTER
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190 editorRect.y += (cell.height - editorRect.height)/2;
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191 }
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192 return editorRect;
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193 }
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194
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195 /**
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196 * Removes all associations between the TreeEditor and the row in the tree. The
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197 * tree and the editor Control are <b>not</b> disposed.
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198 */
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199 public override void dispose () {
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200 if (tree !is null && !tree.isDisposed()) {
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201 if (this.column > -1 && this.column < tree.getColumnCount()){
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202 TreeColumn treeColumn = tree.getColumn(this.column);
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203 treeColumn.removeControlListener(columnListener);
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204 }
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205 if (treeListener !is null) tree.removeTreeListener(treeListener);
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206 }
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207 columnListener = null;
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208 treeListener = null;
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209 tree = null;
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210 item = null;
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211 column = 0;
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212 timer = null;
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213 super.dispose();
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214 }
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215
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216 /**
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217 * Returns the zero based index of the column of the cell being tracked by this editor.
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218 *
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219 * @return the zero based index of the column of the cell being tracked by this editor
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220 *
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221 * @since 3.1
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222 */
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223 public int getColumn () {
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224 return column;
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225 }
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226
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227 /**
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228 * Returns the TreeItem for the row of the cell being tracked by this editor.
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229 *
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230 * @return the TreeItem for the row of the cell being tracked by this editor
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231 */
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232 public TreeItem getItem () {
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233 return item;
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234 }
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235
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236 void resize () {
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237 layout();
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238 /*
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239 * On some platforms, the table scrolls when an item that
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240 * is partially visible at the bottom of the table is
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241 * selected. Ensure that the correct row is edited by
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242 * laying out one more time in a timerExec().
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243 */
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244 if (tree !is null) {
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245 Display display = tree.getDisplay();
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246 display.timerExec(-1, timer);
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247 display.timerExec(TIMEOUT, timer);
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248 }
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249 }
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250
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251 /**
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252 * Sets the zero based index of the column of the cell being tracked by this editor.
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253 *
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254 * @param column the zero based index of the column of the cell being tracked by this editor
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255 *
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256 * @since 3.1
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257 */
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258 public void setColumn(int column) {
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259 int columnCount = tree.getColumnCount();
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260 // Separately handle the case where the tree has no TreeColumns.
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261 // In this situation, there is a single default column.
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262 if (columnCount is 0) {
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263 this.column = (column is 0) ? 0 : -1;
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264 resize();
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265 return;
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266 }
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267 if (this.column > -1 && this.column < columnCount){
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268 TreeColumn treeColumn = tree.getColumn(this.column);
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269 treeColumn.removeControlListener(columnListener);
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270 this.column = -1;
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271 }
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272
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273 if (column < 0 || column >= tree.getColumnCount()) return;
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274
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275 this.column = column;
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276 TreeColumn treeColumn = tree.getColumn(this.column);
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277 treeColumn.addControlListener(columnListener);
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278 resize();
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279 }
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280
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281 /**
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282 * Specifies the <code>TreeItem</code> that is to be edited.
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283 *
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284 * @param item the item to be edited
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285 */
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286 public void setItem (TreeItem item) {
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287 this.item = item;
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288 resize();
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289 }
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290
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291 /**
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292 * Specify the Control that is to be displayed and the cell in the tree that it is to be positioned above.
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293 *
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294 * <p>Note: The Control provided as the editor <b>must</b> be created with its parent being the Tree control
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295 * specified in the TreeEditor constructor.
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296 *
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297 * @param editor the Control that is displayed above the cell being edited
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298 * @param item the TreeItem for the row of the cell being tracked by this editor
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299 * @param column the zero based index of the column of the cell being tracked by this editor
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300 *
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diff changeset
301 * @since 3.1
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302 */
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303 public void setEditor (Control editor, TreeItem item, int column) {
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304 setItem(item);
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305 setColumn(column);
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306 setEditor(editor);
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307 }
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308 public override void setEditor (Control editor) {
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309 super.setEditor(editor);
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310 resize();
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311 }
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312
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313 /**
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314 * Specify the Control that is to be displayed and the cell in the tree that it is to be positioned above.
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315 *
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316 * <p>Note: The Control provided as the editor <b>must</b> be created with its parent being the Tree control
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317 * specified in the TreeEditor constructor.
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318 *
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319 * @param editor the Control that is displayed above the cell being edited
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320 * @param item the TreeItem for the row of the cell being tracked by this editor
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321 */
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322 public void setEditor (Control editor, TreeItem item) {
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323 setItem(item);
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324 setEditor(editor);
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325 }
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326
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327 public override void layout () {
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328 if (tree is null || tree.isDisposed()) return;
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329 if (item is null || item.isDisposed()) return;
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330 int columnCount = tree.getColumnCount();
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331 if (columnCount is 0 && column !is 0) return;
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332 if (columnCount > 0 && (column < 0 || column >= columnCount)) return;
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333 super.layout();
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334 }
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335
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336 }