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annotate dwt/custom/TableTreeEditor.d @ 128:07399639c0c8

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Added DWT extension to dwt.widgets.MessageBox
author Jacob Carlborg <doob@me.com>
date Sat, 17 Jan 2009 16:26:49 +0100
parents 63a09873578e
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2007 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 dwt.custom.TableTreeEditor;
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15 import dwt.dwthelper.utils;
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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.Table;
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26 import dwt.widgets.TableColumn;
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27 import dwt.custom.ControlEditor;
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28 import dwt.custom.TableTree;
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29 import dwt.custom.TableTreeItem;
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31 /**
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32 *
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33 * A TableTreeEditor is a manager for a Control that appears above a cell in a TableTree
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34 * and tracks with the moving and resizing of that cell. It can be used to display a
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35 * text widget above a cell in a TableTree so that the user can edit the contents of
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36 * that cell. It can also be used to display a button that can launch a dialog for
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37 * 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 TableTreeEditor:
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40 * <code><pre>
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41 * final TableTree tableTree = new TableTree(shell, DWT.FULL_SELECTION | DWT.HIDE_SELECTION);
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42 * final Table table = tableTree.getTable();
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43 * TableColumn column1 = new TableColumn(table, DWT.NONE);
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44 * TableColumn column2 = new TableColumn(table, DWT.NONE);
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45 * for (int i = 0; i &lt; 10; i++) {
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46 * TableTreeItem item = new TableTreeItem(tableTree, DWT.NONE);
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47 * item.setText(0, "item " + i);
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48 * item.setText(1, "edit this value");
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49 * for (int j = 0; j &lt; 3; j++) {
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50 * TableTreeItem subitem = new TableTreeItem(item, DWT.NONE);
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51 * subitem.setText(0, "subitem " + i + " " + j);
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52 * subitem.setText(1, "edit this value");
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53 * }
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54 * }
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55 * column1.setWidth(100);
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56 * column2.pack();
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57 *
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58 * final TableTreeEditor editor = new TableTreeEditor(tableTree);
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59 * //The editor must have the same size as the cell and must
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60 * //not be any smaller than 50 pixels.
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61 * editor.horizontalAlignment = DWT.LEFT;
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62 * editor.grabHorizontal = true;
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63 * editor.minimumWidth = 50;
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64 * // editing the second column
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65 * final int EDITABLECOLUMN = 1;
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66 *
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67 * tableTree.addSelectionListener(new SelectionAdapter() {
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68 * public void widgetSelected(SelectionEvent e) {
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69 * // Clean up any previous editor control
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70 * Control oldEditor = editor.getEditor();
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71 * if (oldEditor !is null) oldEditor.dispose();
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72 *
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73 * // Identify the selected row
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74 * TableTreeItem item = (TableTreeItem)e.item;
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75 * if (item is null) return;
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76 *
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77 * // The control that will be the editor must be a child of the Table
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78 * Text newEditor = new Text(table, DWT.NONE);
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79 * newEditor.setText(item.getText(EDITABLECOLUMN));
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80 * newEditor.addModifyListener(new ModifyListener() {
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81 * public void modifyText(ModifyEvent e) {
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82 * Text text = (Text)editor.getEditor();
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83 * editor.getItem().setText(EDITABLECOLUMN, text.getText());
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84 * }
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85 * });
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86 * newEditor.selectAll();
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87 * newEditor.setFocus();
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88 * editor.setEditor(newEditor, item, EDITABLECOLUMN);
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89 * }
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90 * });
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91 * </pre></code>
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92 *
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93 * @deprecated As of 3.1 use TreeEditor with Tree, TreeItem and TreeColumn
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94 */
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95 public class TableTreeEditor : ControlEditor {
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96
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97 alias ControlEditor.setEditor setEditor;
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98
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99 TableTree tableTree;
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100 TableTreeItem item;
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101 int column = -1;
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102 ControlListener columnListener;
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103 TreeListener treeListener;
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104 /**
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105 * Creates a TableTreeEditor for the specified TableTree.
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106 *
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107 * @param tableTree the TableTree Control above which this editor will be displayed
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108 *
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109 */
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110 public this (TableTree tableTree) {
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111 super(tableTree.getTable());
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112 this.tableTree = tableTree;
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113
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114 treeListener = new class() TreeListener {
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115 Runnable runnable;
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116 this() {
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117 runnable = new class() Runnable {
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118 public void run() {
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119 if (this.outer.outer.editor is null || this.outer.outer.editor.isDisposed()) return;
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120 if (this.outer.outer.tableTree.isDisposed()) return;
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121 this.outer.outer.layout();
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122 this.outer.outer.editor.setVisible(true);
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123 }
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124 };
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125 }
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126 public void treeCollapsed(TreeEvent e) {
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127 if (editor is null || editor.isDisposed ()) return;
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128 editor.setVisible(false);
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129 e.display.asyncExec(runnable);
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130 }
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131 public void treeExpanded(TreeEvent e) {
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132 if (editor is null || editor.isDisposed ()) return;
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133 editor.setVisible(false);
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134 e.display.asyncExec(runnable);
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135 }
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136 };
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137 tableTree.addTreeListener(treeListener);
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138
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139 columnListener = new class() ControlListener {
0
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140 public void controlMoved(ControlEvent e){
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141 layout ();
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142 }
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143 public void controlResized(ControlEvent e){
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144 layout ();
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145 }
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146 };
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147
0
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148 // To be consistent with older versions of DWT, grabVertical defaults to true
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149 grabVertical = true;
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150 }
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151
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152 override Rectangle computeBounds () {
0
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153 if (item is null || column is -1 || item.isDisposed() || item.tableItem is null) return new Rectangle(0, 0, 0, 0);
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154 Rectangle cell = item.getBounds(column);
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155 Rectangle area = tableTree.getClientArea();
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156 if (cell.x < area.x + area.width) {
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157 if (cell.x + cell.width > area.x + area.width) {
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158 cell.width = area.x + area.width - cell.x;
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159 }
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160 }
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161 Rectangle editorRect = new Rectangle(cell.x, cell.y, minimumWidth, minimumHeight);
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162
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163 if (grabHorizontal) {
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164 editorRect.width = Math.max(cell.width, minimumWidth);
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165 }
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166
0
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167 if (grabVertical) {
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168 editorRect.height = Math.max(cell.height, minimumHeight);
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169 }
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170
0
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171 if (horizontalAlignment is DWT.RIGHT) {
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172 editorRect.x += cell.width - editorRect.width;
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173 } else if (horizontalAlignment is DWT.LEFT) {
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174 // do nothing - cell.x is the right answer
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175 } else { // default is CENTER
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176 editorRect.x += (cell.width - editorRect.width)/2;
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177 }
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178
0
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179 if (verticalAlignment is DWT.BOTTOM) {
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180 editorRect.y += cell.height - editorRect.height;
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181 } else if (verticalAlignment is DWT.TOP) {
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182 // do nothing - cell.y is the right answer
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183 } else { // default is CENTER
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184 editorRect.y += (cell.height - editorRect.height)/2;
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185 }
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186 return editorRect;
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187 }
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188 /**
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189 * Removes all associations between the TableTreeEditor and the cell in the table tree. The
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190 * TableTree and the editor Control are <b>not</b> disposed.
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191 */
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192 public override void dispose () {
0
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193 if (tableTree !is null && !tableTree.isDisposed()) {
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194 Table table = tableTree.getTable();
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195 if (table !is null && !table.isDisposed()) {
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196 if (this.column > -1 && this.column < table.getColumnCount()){
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197 TableColumn tableColumn = table.getColumn(this.column);
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198 tableColumn.removeControlListener(columnListener);
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199 }
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200 }
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201 if (treeListener !is null) tableTree.removeTreeListener(treeListener);
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202 }
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203 treeListener = null;
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204 columnListener = null;
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205 tableTree = null;
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206 item = null;
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207 column = -1;
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208 super.dispose();
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209 }
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210 /**
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211 * Returns the zero based index of the column of the cell being tracked by this editor.
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212 *
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213 * @return the zero based index of the column of the cell being tracked by this editor
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214 */
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215 public int getColumn () {
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216 return column;
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217 }
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218 /**
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219 * Returns the TableTreeItem for the row of the cell being tracked by this editor.
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220 *
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221 * @return the TableTreeItem for the row of the cell being tracked by this editor
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222 */
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223 public TableTreeItem getItem () {
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224 return item;
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225 }
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226 public void setColumn(int column) {
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227 Table table = tableTree.getTable();
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228 int columnCount = table.getColumnCount();
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229 // Separately handle the case where the table has no TableColumns.
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230 // In this situation, there is a single default column.
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231 if (columnCount is 0) {
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232 this.column = (column is 0) ? 0 : -1;
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233 layout();
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234 return;
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235 }
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236 if (this.column > -1 && this.column < columnCount){
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237 TableColumn tableColumn = table.getColumn(this.column);
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238 tableColumn.removeControlListener(columnListener);
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239 this.column = -1;
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240 }
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241
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242 if (column < 0 || column >= table.getColumnCount()) return;
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243
0
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244 this.column = column;
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245 TableColumn tableColumn = table.getColumn(this.column);
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246 tableColumn.addControlListener(columnListener);
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247 layout();
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248 }
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249 public void setItem (TableTreeItem item) {
0
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250 this.item = item;
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251 layout();
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252 }
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253
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254 /**
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255 * Specify the Control that is to be displayed and the cell in the table that it is to be positioned above.
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256 *
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257 * <p>Note: The Control provided as the editor <b>must</b> be created with its parent being the Table control
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258 * specified in the TableEditor constructor.
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259 *
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260 * @param editor the Control that is displayed above the cell being edited
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261 * @param item the TableItem for the row of the cell being tracked by this editor
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262 * @param column the zero based index of the column of the cell being tracked by this editor
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263 */
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264 alias ControlEditor.setEditor setEditor;
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265 public void setEditor (Control editor, TableTreeItem item, int column) {
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266 setItem(item);
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267 setColumn(column);
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268 setEditor(editor);
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269 }
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270 public override void layout () {
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271 if (tableTree is null || tableTree.isDisposed()) return;
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272 if (item is null || item.isDisposed()) return;
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273 Table table = tableTree.getTable();
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274 int columnCount = table.getColumnCount();
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275 if (columnCount is 0 && column !is 0) return;
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276 if (columnCount > 0 && (column < 0 || column >= columnCount)) return;
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277 super.layout();
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278 }
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279
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280 }