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annotate dwt/custom/TableEditor.d @ 156:969e7de37c3d default tip

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Fixes to get dwt to work with dmd and ldc
author Jacob Carlborg <doob@me.com>
date Wed, 08 Jul 2009 21:56:44 +0200
parents 07399639c0c8
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2008 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module dwt.custom.TableEditor;
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15 import dwt.dwthelper.utils;
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19 import dwt.DWT;
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20 import dwt.events.ControlEvent;
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21 import dwt.events.ControlListener;
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22 import dwt.graphics.Rectangle;
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23 import dwt.widgets.Control;
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24 import dwt.widgets.Display;
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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.widgets.TableItem;
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28 import dwt.custom.ControlEditor;
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30 /**
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31 *
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32 * A TableEditor is a manager for a Control that appears above a cell in a Table and tracks with the
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33 * moving and resizing of that cell. It can be used to display a text widget above a cell
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34 * in a Table so that the user can edit the contents of that cell. It can also be used to display
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35 * a button that can launch a dialog for modifying the contents of the associated cell.
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36 *
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37 * <p> Here is an example of using a TableEditor:
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38 * <code><pre>
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39 * final Table table = new Table(shell, DWT.FULL_SELECTION | DWT.HIDE_SELECTION);
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40 * TableColumn column1 = new TableColumn(table, DWT.NONE);
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41 * TableColumn column2 = new TableColumn(table, DWT.NONE);
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42 * for (int i = 0; i &lt; 10; i++) {
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43 * TableItem item = new TableItem(table, DWT.NONE);
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44 * item.setText(new String[] {"item " + i, "edit this value"});
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45 * }
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46 * column1.pack();
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47 * column2.pack();
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48 *
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49 * final TableEditor editor = new TableEditor(table);
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50 * //The editor must have the same size as the cell and must
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51 * //not be any smaller than 50 pixels.
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52 * editor.horizontalAlignment = DWT.LEFT;
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53 * editor.grabHorizontal = true;
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54 * editor.minimumWidth = 50;
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55 * // editing the second column
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56 * final int EDITABLECOLUMN = 1;
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57 *
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58 * table.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 * TableItem item = (TableItem)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 Table
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69 * Text newEditor = new Text(table, DWT.NONE);
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70 * newEditor.setText(item.getText(EDITABLECOLUMN));
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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(EDITABLECOLUMN, 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, EDITABLECOLUMN);
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80 * }
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81 * });
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82 * </pre></code>
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83 *
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84 * @see <a href="http://www.eclipse.org/swt/snippets/#tableeditor">TableEditor snippets</a>
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85 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
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86 */
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87 public class TableEditor : ControlEditor {
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88 Table table;
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89 TableItem item;
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90 int column = -1;
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91 ControlListener columnListener;
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92 Runnable timer;
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93 static final int TIMEOUT = 1500;
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94 /**
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95 * Creates a TableEditor for the specified Table.
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96 *
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97 * @param table the Table Control above which this editor will be displayed
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98 *
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99 */
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100 public this (Table table) {
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101 super(table);
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102 this.table = table;
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103
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104 columnListener = new class() ControlListener {
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105 public void controlMoved(ControlEvent e){
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106 layout ();
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107 }
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108 public void controlResized(ControlEvent e){
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109 layout ();
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110 }
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111 };
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112 timer = new class() Runnable {
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113 public void run() {
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114 layout ();
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115 }
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116 };
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117
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118 // To be consistent with older versions of DWT, grabVertical defaults to true
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119 grabVertical = true;
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120 }
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121 override Rectangle computeBounds () {
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122 if (item is null || column is -1 || item.isDisposed()) return new Rectangle(0, 0, 0, 0);
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123 Rectangle cell = item.getBounds(column);
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124 Rectangle rect = item.getImageBounds(column);
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125 cell.x = rect.x + rect.width;
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126 cell.width -= rect.width;
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127 Rectangle area = table.getClientArea();
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128 if (cell.x < area.x + area.width) {
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129 if (cell.x + cell.width > area.x + area.width) {
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130 cell.width = area.x + area.width - cell.x;
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131 }
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132 }
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133 Rectangle editorRect = new Rectangle(cell.x, cell.y, minimumWidth, minimumHeight);
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134
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135 if (grabHorizontal) {
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136 editorRect.width = Math.max(cell.width, minimumWidth);
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137 }
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138
0
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139 if (grabVertical) {
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140 editorRect.height = Math.max(cell.height, minimumHeight);
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141 }
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142
0
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143 if (horizontalAlignment is DWT.RIGHT) {
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144 editorRect.x += cell.width - editorRect.width;
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145 } else if (horizontalAlignment is DWT.LEFT) {
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146 // do nothing - cell.x is the right answer
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147 } else { // default is CENTER
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148 editorRect.x += (cell.width - editorRect.width)/2;
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149 }
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150
0
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151 if (verticalAlignment is DWT.BOTTOM) {
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152 editorRect.y += cell.height - editorRect.height;
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153 } else if (verticalAlignment is DWT.TOP) {
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154 // do nothing - cell.y is the right answer
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155 } else { // default is CENTER
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156 editorRect.y += (cell.height - editorRect.height)/2;
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157 }
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158 return editorRect;
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159 }
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160 /**
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161 * Removes all associations between the TableEditor and the cell in the table. The
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162 * Table and the editor Control are <b>not</b> disposed.
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163 */
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164 public override void dispose () {
0
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165 if (table !is null && !table.isDisposed()) {
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166 if (this.column > -1 && this.column < table.getColumnCount()){
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167 TableColumn tableColumn = table.getColumn(this.column);
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168 tableColumn.removeControlListener(columnListener);
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169 }
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170 }
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171 columnListener = null;
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172 table = null;
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173 item = null;
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174 column = -1;
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175 timer = null;
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176 super.dispose();
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177 }
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178 /**
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179 * Returns the zero based index of the column of the cell being tracked by this editor.
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180 *
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181 * @return the zero based index of the column of the cell being tracked by this editor
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182 */
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183 public int getColumn () {
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184 return column;
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185 }
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186 /**
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187 * Returns the TableItem for the row of the cell being tracked by this editor.
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188 *
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189 * @return the TableItem for the row of the cell being tracked by this editor
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190 */
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191 public TableItem getItem () {
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192 return item;
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193 }
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194 void resize () {
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195 layout();
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196 /*
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197 * On some platforms, the table scrolls when an item that
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198 * is partially visible at the bottom of the table is
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199 * selected. Ensure that the correct row is edited by
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200 * laying out one more time in a timerExec().
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201 */
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202 if (table !is null) {
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203 Display display = table.getDisplay();
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204 display.timerExec(-1, timer);
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205 display.timerExec(TIMEOUT, timer);
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206 }
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207 }
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208 /**
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209 * Sets the zero based index of the column of the cell being tracked by this editor.
41
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210 *
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211 * @param column the zero based index of the column of the cell being tracked by this editor
0
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212 */
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213 public void setColumn(int column) {
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214 int columnCount = table.getColumnCount();
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215 // Separately handle the case where the table has no TableColumns.
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216 // In this situation, there is a single default column.
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217 if (columnCount is 0) {
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218 this.column = (column is 0) ? 0 : -1;
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219 resize();
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220 return;
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221 }
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222 if (this.column > -1 && this.column < columnCount){
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223 TableColumn tableColumn = table.getColumn(this.column);
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224 tableColumn.removeControlListener(columnListener);
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225 this.column = -1;
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226 }
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227
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228 if (column < 0 || column >= table.getColumnCount()) return;
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229
0
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230 this.column = column;
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231 TableColumn tableColumn = table.getColumn(this.column);
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232 tableColumn.addControlListener(columnListener);
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233 resize();
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234 }
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235 /**
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236 * Specifies the <code>TableItem</code> that is to be edited.
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237 *
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238 * @param item the item to be edited
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239 */
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240 public void setItem (TableItem item) {
0
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241 this.item = item;
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242 resize();
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243 }
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244 public override void setEditor (Control editor) {
0
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245 super.setEditor(editor);
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246 resize();
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247 }
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248 /**
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249 * 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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250 *
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251 * <p>Note: The Control provided as the editor <b>must</b> be created with its parent being the Table control
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252 * specified in the TableEditor constructor.
41
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253 *
0
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254 * @param editor the Control that is displayed above the cell being edited
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255 * @param item the TableItem for the row of the cell being tracked by this editor
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256 * @param column the zero based index of the column of the cell being tracked by this editor
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257 */
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258 public void setEditor (Control editor, TableItem item, int column) {
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259 setItem(item);
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260 setColumn(column);
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261 setEditor(editor);
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262 }
41
6337764516f1 Sync dwt/custom with dwt-linux (took copy of complete folder)
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263 public override void layout () {
0
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264 if (table is null || table.isDisposed()) return;
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265 if (item is null || item.isDisposed()) return;
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266 int columnCount = table.getColumnCount();
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267 if (columnCount is 0 && column !is 0) return;
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268 if (columnCount > 0 && (column < 0 || column >= columnCount)) return;
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269 super.layout();
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270 }
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271 }