Mercurial > projects > dwt-linux
annotate dwt/custom/TreeEditor.d @ 322:96b14a31d9b3
Added missing dwthelper.utils imports. (catched by llvmdc)
author | Frank Benoit <benoit@tionex.de> |
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date | Mon, 06 Oct 2008 21:02:12 +0200 |
parents | c0d810de7093 |
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1 /******************************************************************************* |
259 | 2 * Copyright (c) 2000, 2008 IBM Corporation and others. |
102
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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 |
108 | 10 * Port to the D programming language: |
11 * Frank Benoit <benoit@tionex.de> | |
102
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12 *******************************************************************************/ |
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13 module dwt.custom.TreeEditor; |
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14 |
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Added missing dwthelper.utils imports. (catched by llvmdc)
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15 import dwt.dwthelper.utils; |
102
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16 |
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17 |
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18 import dwt.DWT; |
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19 import dwt.events.ControlEvent; |
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20 import dwt.events.ControlListener; |
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21 import dwt.events.TreeEvent; |
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22 import dwt.events.TreeListener; |
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23 import dwt.graphics.Rectangle; |
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24 import dwt.widgets.Control; |
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25 import dwt.widgets.Display; |
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26 import dwt.widgets.Tree; |
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27 import dwt.widgets.TreeColumn; |
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28 import dwt.widgets.TreeItem; |
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29 import dwt.custom.ControlEditor; |
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30 import dwt.dwthelper.Runnable; |
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31 |
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32 /** |
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33 * |
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34 * A TreeEditor is a manager for a Control that appears above a cell in a Tree and tracks with the |
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35 * moving and resizing of that cell. It can be used to display a text widget above a cell |
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36 * 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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37 * a button that can launch a dialog for modifying the contents of the associated cell. |
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38 * |
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39 * <p> Here is an example of using a TreeEditor: |
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40 * <code><pre> |
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41 * final Tree tree = new Tree(shell, DWT.BORDER); |
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42 * for (int i = 0; i < 3; i++) { |
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43 * TreeItem item = new TreeItem(tree, DWT.NONE); |
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44 * item.setText("item " + i); |
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45 * for (int j = 0; j < 3; j++) { |
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46 * TreeItem subItem = new TreeItem(item, DWT.NONE); |
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47 * subItem.setText("item " + i + " " + j); |
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48 * } |
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49 * } |
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50 * |
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51 * final TreeEditor editor = new TreeEditor(tree); |
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52 * //The editor must have the same size as the cell and must |
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53 * //not be any smaller than 50 pixels. |
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54 * editor.horizontalAlignment = DWT.LEFT; |
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55 * editor.grabHorizontal = true; |
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56 * editor.minimumWidth = 50; |
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57 * |
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58 * tree.addSelectionListener(new SelectionAdapter() { |
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59 * public void widgetSelected(SelectionEvent e) { |
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60 * // Clean up any previous editor control |
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61 * Control oldEditor = editor.getEditor(); |
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62 * if (oldEditor !is null) oldEditor.dispose(); |
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63 * |
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64 * // Identify the selected row |
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65 * TreeItem item = (TreeItem)e.item; |
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66 * if (item is null) return; |
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67 * |
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68 * // The control that will be the editor must be a child of the Tree |
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69 * Text newEditor = new Text(tree, DWT.NONE); |
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70 * newEditor.setText(item.getText()); |
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71 * newEditor.addModifyListener(new ModifyListener() { |
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72 * public void modifyText(ModifyEvent e) { |
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73 * Text text = (Text)editor.getEditor(); |
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74 * editor.getItem().setText(text.getText()); |
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75 * } |
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76 * }); |
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77 * newEditor.selectAll(); |
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78 * newEditor.setFocus(); |
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79 * editor.setEditor(newEditor, item); |
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80 * } |
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81 * }); |
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82 * </pre></code> |
259 | 83 * |
84 * @see <a href="http://www.eclipse.org/swt/snippets/#treeeditor">TreeEditor snippets</a> | |
85 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> | |
102
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86 */ |
103 | 87 |
102
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88 public class TreeEditor : ControlEditor { |
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89 Tree tree; |
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90 TreeItem item; |
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91 int column = 0; |
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92 ControlListener columnListener; |
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93 TreeListener treeListener; |
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94 Runnable timer; |
103 | 95 static const int TIMEOUT = 1500; |
102
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96 |
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97 /** |
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98 * Creates a TreeEditor for the specified Tree. |
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99 * |
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100 * @param tree the Tree Control above which this editor will be displayed |
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101 * |
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102 */ |
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103 public this (Tree tree) { |
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104 super(tree); |
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105 this.tree = tree; |
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106 |
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107 columnListener = new class() ControlListener { |
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108 public void controlMoved(ControlEvent e){ |
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109 layout(); |
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110 } |
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111 public void controlResized(ControlEvent e){ |
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112 layout(); |
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113 } |
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114 }; |
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115 timer = new class() Runnable { |
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116 public void run() { |
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117 layout (); |
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118 } |
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119 }; |
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120 treeListener = new class() TreeListener { |
103 | 121 Runnable runnable; |
122 this(){ | |
123 runnable = new class() Runnable { | |
124 public void run() { | |
237 | 125 if (this.outer.outer.editor is null || this.outer.outer.editor.isDisposed()) return; |
103 | 126 if (this.outer.outer.tree.isDisposed()) return; |
127 layout(); | |
237 | 128 this.outer.outer.editor.setVisible(true); |
103 | 129 } |
130 }; | |
131 } | |
102
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132 public void treeCollapsed(TreeEvent e) { |
237 | 133 if (this.outer.editor is null || this.outer.editor.isDisposed ()) return; |
134 this.outer.editor.setVisible(false); | |
102
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135 e.display.asyncExec(runnable); |
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136 } |
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137 public void treeExpanded(TreeEvent e) { |
237 | 138 if (this.outer.editor is null || this.outer.editor.isDisposed ()) return; |
139 this.outer.editor.setVisible(false); | |
102
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140 e.display.asyncExec(runnable); |
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141 } |
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142 }; |
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143 tree.addTreeListener(treeListener); |
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144 |
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145 // To be consistent with older versions of DWT, grabVertical defaults to true |
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146 grabVertical = true; |
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147 } |
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148 |
152
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149 override Rectangle computeBounds () { |
102
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150 if (item is null || column is -1 || item.isDisposed()) return new Rectangle(0, 0, 0, 0); |
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151 Rectangle cell = item.getBounds(column); |
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152 Rectangle rect = item.getImageBounds(column); |
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153 cell.x = rect.x + rect.width; |
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package custom, module and imports ok
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154 cell.width -= rect.width; |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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|
155 Rectangle area = tree.getClientArea(); |
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package custom, module and imports ok
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parents:
diff
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|
156 if (cell.x < area.x + area.width) { |
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package custom, module and imports ok
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157 if (cell.x + cell.width > area.x + area.width) { |
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package custom, module and imports ok
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158 cell.width = area.x + area.width - cell.x; |
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package custom, module and imports ok
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|
159 } |
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package custom, module and imports ok
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|
160 } |
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package custom, module and imports ok
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parents:
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161 Rectangle editorRect = new Rectangle(cell.x, cell.y, minimumWidth, minimumHeight); |
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package custom, module and imports ok
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162 |
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package custom, module and imports ok
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163 if (grabHorizontal) { |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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164 if (tree.getColumnCount() is 0) { |
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package custom, module and imports ok
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165 // Bounds of tree item only include the text area - stretch out to include |
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package custom, module and imports ok
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166 // entire client area |
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package custom, module and imports ok
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167 cell.width = area.x + area.width - cell.x; |
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package custom, module and imports ok
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168 } |
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package custom, module and imports ok
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169 editorRect.width = Math.max(cell.width, minimumWidth); |
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package custom, module and imports ok
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170 } |
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package custom, module and imports ok
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171 |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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172 if (grabVertical) { |
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package custom, module and imports ok
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173 editorRect.height = Math.max(cell.height, minimumHeight); |
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package custom, module and imports ok
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174 } |
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package custom, module and imports ok
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175 |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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176 if (horizontalAlignment is DWT.RIGHT) { |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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177 editorRect.x += cell.width - editorRect.width; |
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package custom, module and imports ok
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178 } else if (horizontalAlignment is DWT.LEFT) { |
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package custom, module and imports ok
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179 // do nothing - cell.x is the right answer |
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package custom, module and imports ok
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180 } else { // default is CENTER |
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package custom, module and imports ok
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181 editorRect.x += (cell.width - editorRect.width)/2; |
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package custom, module and imports ok
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182 } |
103 | 183 // don't let the editor overlap with the + / - of the tree |
102
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package custom, module and imports ok
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184 editorRect.x = Math.max(cell.x, editorRect.x); |
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package custom, module and imports ok
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185 |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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186 if (verticalAlignment is DWT.BOTTOM) { |
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package custom, module and imports ok
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187 editorRect.y += cell.height - editorRect.height; |
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package custom, module and imports ok
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188 } else if (verticalAlignment is DWT.TOP) { |
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package custom, module and imports ok
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189 // do nothing - cell.y is the right answer |
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package custom, module and imports ok
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190 } else { // default is CENTER |
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package custom, module and imports ok
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191 editorRect.y += (cell.height - editorRect.height)/2; |
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package custom, module and imports ok
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192 } |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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193 return editorRect; |
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package custom, module and imports ok
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194 } |
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package custom, module and imports ok
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195 |
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package custom, module and imports ok
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196 /** |
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package custom, module and imports ok
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197 * Removes all associations between the TreeEditor and the row in the tree. The |
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package custom, module and imports ok
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198 * tree and the editor Control are <b>not</b> disposed. |
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package custom, module and imports ok
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199 */ |
150
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reworked overrides and superclass aliases
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108
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200 public override void dispose () { |
102
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
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|
201 if (tree !is null && !tree.isDisposed()) { |
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package custom, module and imports ok
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|
202 if (this.column > -1 && this.column < tree.getColumnCount()){ |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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203 TreeColumn treeColumn = tree.getColumn(this.column); |
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package custom, module and imports ok
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|
204 treeColumn.removeControlListener(columnListener); |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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205 } |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
206 if (treeListener !is null) tree.removeTreeListener(treeListener); |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
207 } |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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diff
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|
208 columnListener = null; |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
209 treeListener = null; |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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|
210 tree = null; |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
211 item = null; |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
212 column = 0; |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
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213 timer = null; |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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|
214 super.dispose(); |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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|
215 } |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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216 |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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|
217 /** |
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218 * Returns the zero based index of the column of the cell being tracked by this editor. |
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package custom, module and imports ok
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|
219 * |
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package custom, module and imports ok
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220 * @return the zero based index of the column of the cell being tracked by this editor |
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package custom, module and imports ok
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|
221 * |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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|
222 * @since 3.1 |
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|
223 */ |
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Frank Benoit <benoit@tionex.de>
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224 public int getColumn () { |
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package custom, module and imports ok
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225 return column; |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
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|
226 } |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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|
227 |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
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|
228 /** |
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229 * Returns the TreeItem for the row of the cell being tracked by this editor. |
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package custom, module and imports ok
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parents:
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|
230 * |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
231 * @return the TreeItem for the row of the cell being tracked by this editor |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
232 */ |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
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|
233 public TreeItem getItem () { |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
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|
234 return item; |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
235 } |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
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|
236 |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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diff
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|
237 void resize () { |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
238 layout(); |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
239 /* |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
240 * On some platforms, the table scrolls when an item that |
12e3e0e477cd
package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
241 * is partially visible at the bottom of the table is |
12e3e0e477cd
package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
242 * selected. Ensure that the correct row is edited by |
12e3e0e477cd
package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
243 * laying out one more time in a timerExec(). |
12e3e0e477cd
package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
244 */ |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
245 if (tree !is null) { |
12e3e0e477cd
package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
246 Display display = tree.getDisplay(); |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
247 display.timerExec(-1, timer); |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
248 display.timerExec(TIMEOUT, timer); |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
249 } |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
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|
250 } |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
251 |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
252 /** |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
253 * Sets the zero based index of the column of the cell being tracked by this editor. |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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diff
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|
254 * |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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|
255 * @param column the zero based index of the column of the cell being tracked by this editor |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
256 * |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
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|
257 * @since 3.1 |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
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|
258 */ |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
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|
259 public void setColumn(int column) { |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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260 int columnCount = tree.getColumnCount(); |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
261 // Separately handle the case where the tree has no TreeColumns. |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
262 // In this situation, there is a single default column. |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
263 if (columnCount is 0) { |
12e3e0e477cd
package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
264 this.column = (column is 0) ? 0 : -1; |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
265 resize(); |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
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|
266 return; |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
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|
267 } |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
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|
268 if (this.column > -1 && this.column < columnCount){ |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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|
269 TreeColumn treeColumn = tree.getColumn(this.column); |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
270 treeColumn.removeControlListener(columnListener); |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
271 this.column = -1; |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
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|
272 } |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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273 |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
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274 if (column < 0 || column >= tree.getColumnCount()) return; |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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|
275 |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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276 this.column = column; |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
277 TreeColumn treeColumn = tree.getColumn(this.column); |
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package custom, module and imports ok
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|
278 treeColumn.addControlListener(columnListener); |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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diff
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279 resize(); |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
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|
280 } |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
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|
281 |
259 | 282 /** |
283 * Specifies the <code>TreeItem</code> that is to be edited. | |
284 * | |
285 * @param item the item to be edited | |
286 */ | |
102
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
287 public void setItem (TreeItem item) { |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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288 this.item = item; |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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289 resize(); |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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290 } |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
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291 |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
292 /** |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
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293 * Specify the Control that is to be displayed and the cell in the tree that it is to be positioned above. |
12e3e0e477cd
package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
294 * |
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package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
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|
295 * <p>Note: The Control provided as the editor <b>must</b> be created with its parent being the Tree control |
12e3e0e477cd
package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
296 * specified in the TreeEditor constructor. |
12e3e0e477cd
package custom, module and imports ok
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
297 * |
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298 * @param editor the Control that is displayed above the cell being edited |
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299 * @param item the TreeItem for the row of the cell being tracked by this editor |
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300 * @param column the zero based index of the column of the cell being tracked by this editor |
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301 * |
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302 * @since 3.1 |
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303 */ |
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304 public void setEditor (Control editor, TreeItem item, int column) { |
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305 setItem(item); |
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306 setColumn(column); |
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307 setEditor(editor); |
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308 } |
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309 public override void setEditor (Control editor) { |
102
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310 super.setEditor(editor); |
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311 resize(); |
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312 } |
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313 |
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314 /** |
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315 * 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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316 * |
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317 * <p>Note: The Control provided as the editor <b>must</b> be created with its parent being the Tree control |
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318 * specified in the TreeEditor constructor. |
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319 * |
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320 * @param editor the Control that is displayed above the cell being edited |
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321 * @param item the TreeItem for the row of the cell being tracked by this editor |
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322 */ |
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323 public void setEditor (Control editor, TreeItem item) { |
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324 setItem(item); |
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325 setEditor(editor); |
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326 } |
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327 |
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328 public override void layout () { |
102
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329 if (tree is null || tree.isDisposed()) return; |
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330 if (item is null || item.isDisposed()) return; |
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331 int columnCount = tree.getColumnCount(); |
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332 if (columnCount is 0 && column !is 0) return; |
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333 if (columnCount > 0 && (column < 0 || column >= columnCount)) return; |
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334 super.layout(); |
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335 } |
103 | 336 |
102
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337 } |