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annotate org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractComboBoxCellEditor.d @ 12:bc29606a740c

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Added dwt-addons in original directory structure of eclipse.org
author Frank Benoit <benoit@tionex.de>
date Sat, 14 Mar 2009 18:23:29 +0100
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1 /*******************************************************************************
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2 * Copyright (c) 2008 Tom Schindl 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 * Tom Schindl <tom.schindl@bestsolution.at> - initial API and implementation (bug 174739)
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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
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14 module org.eclipse.jface.viewers.AbstractComboBoxCellEditor;
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15
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16 import org.eclipse.jface.viewers.CellEditor;
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17 import org.eclipse.jface.viewers.ColumnViewerEditorActivationEvent;
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18
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19 import org.eclipse.swt.SWT;
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20 import org.eclipse.swt.custom.CCombo;
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21 import org.eclipse.swt.widgets.Composite;
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22
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23 import java.lang.all;
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24 import java.util.Set;
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25
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26 /**
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27 * Abstract base class for Cell-Editors presented as combo boxes
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28 *
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29 * @since 3.4
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30 *
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31 */
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32 abstract class AbstractComboBoxCellEditor : CellEditor {
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33 /**
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34 * The list is dropped down when the activation is done through the mouse
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35 */
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36 public static const int DROP_DOWN_ON_MOUSE_ACTIVATION = 1;
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37
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38 /**
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39 * The list is dropped down when the activation is done through the keyboard
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40 */
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41 public static const int DROP_DOWN_ON_KEY_ACTIVATION = 1 << 1;
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42
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43 /**
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44 * The list is dropped down when the activation is done without
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45 * ui-interaction
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46 */
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47 public static const int DROP_DOWN_ON_PROGRAMMATIC_ACTIVATION = 1 << 2;
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48
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49 /**
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50 * The list is dropped down when the activation is done by traversing from
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51 * cell to cell
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52 */
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53 public static const int DROP_DOWN_ON_TRAVERSE_ACTIVATION = 1 << 3;
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54
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55 private int activationStyle = SWT.NONE;
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56
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57 /**
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58 * Create a new cell-editor
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59 *
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60 * @param parent
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61 * the parent of the combo
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62 * @param style
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63 * the style used to create the combo
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64 */
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65 this(Composite parent, int style) {
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66 super(parent, style);
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67 }
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68
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69 /**
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70 * Creates a new cell editor with no control and no st of choices.
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71 * Initially, the cell editor has no cell validator.
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72 *
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73 */
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74 this() {
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75 }
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76
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77 /*
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78 * (non-Javadoc)
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79 *
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80 * @see org.eclipse.jface.viewers.CellEditor#activate(org.eclipse.jface.viewers.ColumnViewerEditorActivationEvent)
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81 */
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82 public void activate(ColumnViewerEditorActivationEvent activationEvent) {
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83 super.activate(activationEvent);
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84 if (activationStyle !is SWT.NONE) {
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85 bool dropDown = false;
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86 if ((activationEvent.eventType is ColumnViewerEditorActivationEvent.MOUSE_CLICK_SELECTION || activationEvent.eventType is ColumnViewerEditorActivationEvent.MOUSE_DOUBLE_CLICK_SELECTION)
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87 && (activationStyle & DROP_DOWN_ON_MOUSE_ACTIVATION) !is 0 ) {
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88 dropDown = true;
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89 } else if (activationEvent.eventType is ColumnViewerEditorActivationEvent.KEY_PRESSED
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90 && (activationStyle & DROP_DOWN_ON_KEY_ACTIVATION) !is 0 ) {
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91 dropDown = true;
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92 } else if (activationEvent.eventType is ColumnViewerEditorActivationEvent.PROGRAMMATIC
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93 && (activationStyle & DROP_DOWN_ON_PROGRAMMATIC_ACTIVATION) !is 0) {
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94 dropDown = true;
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95 } else if (activationEvent.eventType is ColumnViewerEditorActivationEvent.TRAVERSAL
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96 && (activationStyle & DROP_DOWN_ON_TRAVERSE_ACTIVATION) !is 0) {
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97 dropDown = true;
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98 }
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99
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100 if (dropDown) {
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101 getControl().getDisplay().asyncExec(new class Runnable {
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102
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103 public void run() {
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104 (cast(CCombo) getControl()).setListVisible(true);
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105 }
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106
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107 });
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108
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109 }
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110 }
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111 }
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112
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113 /**
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114 * This method allows to control how the combo reacts when activated
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115 *
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116 * @param activationStyle
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117 * the style used
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118 */
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119 public void setActivationStyle(int activationStyle) {
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120 this.activationStyle = activationStyle;
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121 }
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122 }