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annotate dwtx/jface/viewers/AbstractComboBoxCellEditor.d @ 70:46a6e0e6ccd4

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Merge with d-fied sources of 3.4M7
author Frank Benoit <benoit@tionex.de>
date Thu, 22 May 2008 01:36:46 +0200
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children 4878bef4a38e
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70
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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 dwtx.jface.viewers.AbstractComboBoxCellEditor;
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15
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16 import dwt.DWT;
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17 import dwt.custom.CCombo;
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18 import dwt.widgets.Composite;
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19
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20 /**
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21 * Abstract base class for Cell-Editors presented as combo boxes
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22 *
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23 * @since 3.4
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24 *
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25 */
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26 abstract class AbstractComboBoxCellEditor extends CellEditor {
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27 /**
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28 * The list is dropped down when the activation is done through the mouse
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29 */
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30 public static final int DROP_DOWN_ON_MOUSE_ACTIVATION = 1;
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31
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32 /**
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33 * The list is dropped down when the activation is done through the keyboard
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34 */
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35 public static final int DROP_DOWN_ON_KEY_ACTIVATION = 1 << 1;
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36
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37 /**
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38 * The list is dropped down when the activation is done without
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39 * ui-interaction
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40 */
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41 public static final int DROP_DOWN_ON_PROGRAMMATIC_ACTIVATION = 1 << 2;
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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 by traversing from
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45 * cell to cell
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46 */
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47 public static final int DROP_DOWN_ON_TRAVERSE_ACTIVATION = 1 << 3;
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48
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49 private int activationStyle = DWT.NONE;
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50
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51 /**
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52 * Create a new cell-editor
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53 *
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54 * @param parent
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55 * the parent of the combo
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56 * @param style
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57 * the style used to create the combo
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58 */
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59 AbstractComboBoxCellEditor(Composite parent, int style) {
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60 super(parent, style);
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61 }
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62
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63 /**
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64 * Creates a new cell editor with no control and no st of choices.
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65 * Initially, the cell editor has no cell validator.
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66 *
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67 */
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68 AbstractComboBoxCellEditor() {
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69 }
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70
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71 /*
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72 * (non-Javadoc)
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73 *
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74 * @see dwtx.jface.viewers.CellEditor#activate(dwtx.jface.viewers.ColumnViewerEditorActivationEvent)
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75 */
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76 public void activate(ColumnViewerEditorActivationEvent activationEvent) {
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77 super.activate(activationEvent);
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78 if (activationStyle !is DWT.NONE) {
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79 bool dropDown = false;
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80 if ((activationEvent.eventType is ColumnViewerEditorActivationEvent.MOUSE_CLICK_SELECTION || activationEvent.eventType is ColumnViewerEditorActivationEvent.MOUSE_DOUBLE_CLICK_SELECTION)
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81 && (activationStyle & DROP_DOWN_ON_MOUSE_ACTIVATION) !is 0 ) {
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82 dropDown = true;
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83 } else if (activationEvent.eventType is ColumnViewerEditorActivationEvent.KEY_PRESSED
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84 && (activationStyle & DROP_DOWN_ON_KEY_ACTIVATION) !is 0 ) {
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85 dropDown = true;
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86 } else if (activationEvent.eventType is ColumnViewerEditorActivationEvent.PROGRAMMATIC
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87 && (activationStyle & DROP_DOWN_ON_PROGRAMMATIC_ACTIVATION) !is 0) {
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88 dropDown = true;
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89 } else if (activationEvent.eventType is ColumnViewerEditorActivationEvent.TRAVERSAL
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90 && (activationStyle & DROP_DOWN_ON_TRAVERSE_ACTIVATION) !is 0) {
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91 dropDown = true;
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92 }
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93
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94 if (dropDown) {
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95 getControl().getDisplay().asyncExec(new Runnable() {
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96
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97 public void run() {
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98 ((CCombo) getControl()).setListVisible(true);
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99 }
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100
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101 });
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102
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103 }
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104 }
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105 }
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106
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107 /**
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108 * This method allows to control how the combo reacts when activated
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109 *
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110 * @param activationStyle
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111 * the style used
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112 */
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113 public void setActivationStyle(int activationStyle) {
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114 this.activationStyle = activationStyle;
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115 }
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116 }