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annotate dwt/custom/TableTreeEditor.d @ 7:e831403a80a9

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Add 'cast' to casts
author Frank Benoit <benoit@tionex.de>
date Wed, 27 Aug 2008 14:30:35 +0200
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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 *******************************************************************************/
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11 module dwt.custom;
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12
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13
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14 import dwt.*;
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15 import dwt.graphics.*;
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16 import dwt.widgets.*;
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17 import dwt.events.*;
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18 /**
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19 *
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20 * A TableTreeEditor is a manager for a Control that appears above a cell in a TableTree
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21 * and tracks with the moving and resizing of that cell. It can be used to display a
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22 * text widget above a cell in a TableTree so that the user can edit the contents of
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23 * that cell. It can also be used to display a button that can launch a dialog for
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24 * modifying the contents of the associated cell.
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25 *
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26 * <p> Here is an example of using a TableTreeEditor:
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27 * <code><pre>
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28 * final TableTree tableTree = new TableTree(shell, DWT.FULL_SELECTION | DWT.HIDE_SELECTION);
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29 * final Table table = tableTree.getTable();
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30 * TableColumn column1 = new TableColumn(table, DWT.NONE);
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31 * TableColumn column2 = new TableColumn(table, DWT.NONE);
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32 * for (int i = 0; i &lt; 10; i++) {
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33 * TableTreeItem item = new TableTreeItem(tableTree, DWT.NONE);
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34 * item.setText(0, "item " + i);
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35 * item.setText(1, "edit this value");
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36 * for (int j = 0; j &lt; 3; j++) {
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37 * TableTreeItem subitem = new TableTreeItem(item, DWT.NONE);
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38 * subitem.setText(0, "subitem " + i + " " + j);
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39 * subitem.setText(1, "edit this value");
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40 * }
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41 * }
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42 * column1.setWidth(100);
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43 * column2.pack();
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44 *
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45 * final TableTreeEditor editor = new TableTreeEditor(tableTree);
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46 * //The editor must have the same size as the cell and must
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47 * //not be any smaller than 50 pixels.
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48 * editor.horizontalAlignment = DWT.LEFT;
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49 * editor.grabHorizontal = true;
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50 * editor.minimumWidth = 50;
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51 * // editing the second column
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52 * final int EDITABLECOLUMN = 1;
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53 *
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54 * tableTree.addSelectionListener(new SelectionAdapter() {
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55 * public void widgetSelected(SelectionEvent e) {
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56 * // Clean up any previous editor control
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57 * Control oldEditor = editor.getEditor();
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58 * if (oldEditor !is null) oldEditor.dispose();
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59 *
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60 * // Identify the selected row
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61 * TableTreeItem item = cast(TableTreeItem)e.item;
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62 * if (item is null) return;
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63 *
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64 * // The control that will be the editor must be a child of the Table
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65 * Text newEditor = new Text(table, DWT.NONE);
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66 * newEditor.setText(item.getText(EDITABLECOLUMN));
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67 * newEditor.addModifyListener(new ModifyListener() {
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68 * public void modifyText(ModifyEvent e) {
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69 * Text text = cast(Text)editor.getEditor();
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70 * editor.getItem().setText(EDITABLECOLUMN, text.getText());
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71 * }
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72 * });
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73 * newEditor.selectAll();
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74 * newEditor.setFocus();
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75 * editor.setEditor(newEditor, item, EDITABLECOLUMN);
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76 * }
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77 * });
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78 * </pre></code>
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79 *
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80 * @deprecated As of 3.1 use TreeEditor with Tree, TreeItem and TreeColumn
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81 */
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82 public class TableTreeEditor : ControlEditor {
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83
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84 TableTree tableTree;
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85 TableTreeItem item;
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86 int column = -1;
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87 ControlListener columnListener;
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88 TreeListener treeListener;
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89 /**
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90 * Creates a TableTreeEditor for the specified TableTree.
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91 *
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92 * @param tableTree the TableTree Control above which this editor will be displayed
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93 *
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94 */
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95 public this (TableTree tableTree) {
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96 super(tableTree.getTable());
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97 this.tableTree = tableTree;
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98
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99 treeListener = new TreeListener () {
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100 final Runnable runnable = new Runnable() {
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101 public void run() {
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102 if (editor is null || editor.isDisposed()) return;
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103 if (TableTreeEditor.this.tableTree.isDisposed()) return;
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104 layout();
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105 editor.setVisible(true);
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106 }
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107 };
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108 public void treeCollapsed(TreeEvent e) {
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109 if (editor is null || editor.isDisposed ()) return;
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110 editor.setVisible(false);
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111 e.display.asyncExec(runnable);
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112 }
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113 public void treeExpanded(TreeEvent e) {
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114 if (editor is null || editor.isDisposed ()) return;
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115 editor.setVisible(false);
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116 e.display.asyncExec(runnable);
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117 }
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118 };
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119 tableTree.addTreeListener(treeListener);
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120
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121 columnListener = new ControlListener() {
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122 public void controlMoved(ControlEvent e){
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123 layout ();
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124 }
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125 public void controlResized(ControlEvent e){
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126 layout ();
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127 }
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128 };
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129
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130 // To be consistent with older versions of DWT, grabVertical defaults to true
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131 grabVertical = true;
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132 }
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133 Rectangle computeBounds () {
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134 if (item is null || column is -1 || item.isDisposed() || item.tableItem is null) return new Rectangle(0, 0, 0, 0);
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135 Rectangle cell = item.getBounds(column);
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136 Rectangle area = tableTree.getClientArea();
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137 if (cell.x < area.x + area.width) {
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138 if (cell.x + cell.width > area.x + area.width) {
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139 cell.width = area.x + area.width - cell.x;
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140 }
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141 }
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142 Rectangle editorRect = new Rectangle(cell.x, cell.y, minimumWidth, minimumHeight);
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143
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144 if (grabHorizontal) {
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145 editorRect.width = Math.max(cell.width, minimumWidth);
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146 }
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147
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148 if (grabVertical) {
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149 editorRect.height = Math.max(cell.height, minimumHeight);
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150 }
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151
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152 if (horizontalAlignment is DWT.RIGHT) {
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153 editorRect.x += cell.width - editorRect.width;
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154 } else if (horizontalAlignment is DWT.LEFT) {
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155 // do nothing - cell.x is the right answer
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156 } else { // default is CENTER
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157 editorRect.x += (cell.width - editorRect.width)/2;
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158 }
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159
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160 if (verticalAlignment is DWT.BOTTOM) {
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161 editorRect.y += cell.height - editorRect.height;
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162 } else if (verticalAlignment is DWT.TOP) {
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163 // do nothing - cell.y is the right answer
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164 } else { // default is CENTER
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165 editorRect.y += (cell.height - editorRect.height)/2;
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166 }
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167 return editorRect;
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168 }
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169 /**
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170 * Removes all associations between the TableTreeEditor and the cell in the table tree. The
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171 * TableTree and the editor Control are <b>not</b> disposed.
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172 */
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173 public void dispose () {
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174 if (tableTree !is null && !tableTree.isDisposed()) {
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175 Table table = tableTree.getTable();
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176 if (table !is null && !table.isDisposed()) {
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177 if (this.column > -1 && this.column < table.getColumnCount()){
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178 TableColumn tableColumn = table.getColumn(this.column);
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179 tableColumn.removeControlListener(columnListener);
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180 }
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181 }
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182 if (treeListener !is null) tableTree.removeTreeListener(treeListener);
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183 }
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184 treeListener = null;
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185 columnListener = null;
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186 tableTree = null;
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187 item = null;
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188 column = -1;
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189 super.dispose();
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190 }
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191 /**
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192 * Returns the zero based index of the column of the cell being tracked by this editor.
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193 *
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194 * @return the zero based index of the column of the cell being tracked by this editor
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195 */
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196 public int getColumn () {
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197 return column;
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198 }
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199 /**
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200 * Returns the TableTreeItem for the row of the cell being tracked by this editor.
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201 *
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202 * @return the TableTreeItem for the row of the cell being tracked by this editor
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203 */
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204 public TableTreeItem getItem () {
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205 return item;
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206 }
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207 public void setColumn(int column) {
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208 Table table = tableTree.getTable();
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209 int columnCount = table.getColumnCount();
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210 // Separately handle the case where the table has no TableColumns.
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211 // In this situation, there is a single default column.
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212 if (columnCount is 0) {
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213 this.column = (column is 0) ? 0 : -1;
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214 layout();
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215 return;
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216 }
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217 if (this.column > -1 && this.column < columnCount){
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218 TableColumn tableColumn = table.getColumn(this.column);
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219 tableColumn.removeControlListener(columnListener);
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220 this.column = -1;
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221 }
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222
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223 if (column < 0 || column >= table.getColumnCount()) return;
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224
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225 this.column = column;
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226 TableColumn tableColumn = table.getColumn(this.column);
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227 tableColumn.addControlListener(columnListener);
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228 layout();
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229 }
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230 public void setItem (TableTreeItem item) {
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231 this.item = item;
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232 layout();
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233 }
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234
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235 /**
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236 * 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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237 *
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238 * <p>Note: The Control provided as the editor <b>must</b> be created with its parent being the Table control
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239 * specified in the TableEditor constructor.
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240 *
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241 * @param editor the Control that is displayed above the cell being edited
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242 * @param item the TableItem for the row of the cell being tracked by this editor
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243 * @param column the zero based index of the column of the cell being tracked by this editor
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244 */
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245 public void setEditor (Control editor, TableTreeItem item, int column) {
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246 setItem(item);
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247 setColumn(column);
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248 setEditor(editor);
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249 }
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250 public void layout () {
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251 if (tableTree is null || tableTree.isDisposed()) return;
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252 if (item is null || item.isDisposed()) return;
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253 Table table = tableTree.getTable();
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254 int columnCount = table.getColumnCount();
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255 if (columnCount is 0 && column !is 0) return;
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Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
256 if (columnCount > 0 && (column < 0 || column >= columnCount)) return;
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
257 super.layout();
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
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258 }
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
259 }