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1 /*******************************************************************************
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2 * Copyright (c) 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 * Tom Schindl <tom.schindl@bestsolution.at> - initial API and implementation
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10 * - fix for bug 178280, 183999, 184609
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11 * IBM Corporation - API refactoring and general maintenance
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12 * Port to the D programming language:
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13 * Frank Benoit <benoit@tionex.de>
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14 *******************************************************************************/
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15
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16 module dwtx.jface.layout.TreeColumnLayout;
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17
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18 import dwtx.jface.layout.AbstractColumnLayout;
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19
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20 import dwt.events.TreeEvent;
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21 import dwt.events.TreeListener;
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22 import dwt.widgets.Composite;
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23 import dwt.widgets.Layout;
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24 import dwt.widgets.Scrollable;
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25 import dwt.widgets.Tree;
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26 import dwt.widgets.TreeColumn;
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27 import dwt.widgets.Widget;
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28 import dwtx.jface.viewers.ColumnLayoutData;
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29 import dwtx.jface.viewers.ColumnPixelData;
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30
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31 import dwt.dwthelper.utils;
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32 import dwt.dwthelper.Runnable;
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33
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34 /**
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35 * The TreeColumnLayout is the {@link Layout} used to maintain {@link TreeColumn} sizes in a
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36 * {@link Tree}.
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37 *
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38 * <p>
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39 * <b>You can only add the {@link Layout} to a container whose <i>only</i>
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40 * child is the {@link Tree} control you want the {@link Layout} applied to.
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41 * Don't assign the layout directly the {@link Tree}</b>
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42 * </p>
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43 *
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44 * @since 3.3
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45 */
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46 public class TreeColumnLayout : AbstractColumnLayout {
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47 private bool addListener = true;
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48
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49 private static class TreeLayoutListener : TreeListener {
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50
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51 public void treeCollapsed(TreeEvent e) {
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52 update(cast(Tree) e.widget);
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53 }
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54
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55 public void treeExpanded(TreeEvent e) {
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56 update(cast(Tree) e.widget);
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57 }
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58
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59 private void update(Tree tree) {
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60 tree.getDisplay().asyncExec(new class Runnable {
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61 Tree tree_;
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62 this(){
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63 tree_=tree;
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64 }
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65 public void run() {
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66 tree_.update();
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67 tree_.getParent().layout();
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68 }
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69
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70 });
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71 }
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72
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73 }
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74
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75 private static const TreeLayoutListener listener;
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76
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77 static this(){
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78 listener = new TreeLayoutListener();
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79 }
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80
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81 protected void layout(Composite composite, bool flushCache) {
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82 super.layout(composite, flushCache);
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83 if( addListener ) {
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84 addListener=false;
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85 (cast(Tree)getControl(composite)).addTreeListener(listener);
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86 }
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87 }
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88
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89 /* (non-Javadoc)
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90 * @see dwtx.jface.layout.AbstractColumnLayout#getColumnCount(dwt.widgets.Scrollable)
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91 */
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92 int getColumnCount(Scrollable tree) {
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93 return (cast(Tree) tree).getColumnCount();
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94 }
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95
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96 /* (non-Javadoc)
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97 * @see dwtx.jface.layout.AbstractColumnLayout#setColumnWidths(dwt.widgets.Scrollable, int[])
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98 */
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99 void setColumnWidths(Scrollable tree, int[] widths) {
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100 TreeColumn[] columns = (cast(Tree) tree).getColumns();
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101 for (int i = 0; i < widths.length; i++) {
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102 columns[i].setWidth(widths[i]);
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103 }
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104 }
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105
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106 /* (non-Javadoc)
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107 * @see dwtx.jface.layout.AbstractColumnLayout#getLayoutData(dwt.widgets.Scrollable, int)
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108 */
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109 ColumnLayoutData getLayoutData(Scrollable tableTree, int columnIndex) {
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110 TreeColumn column = (cast(Tree) tableTree).getColumn(columnIndex);
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111 return cast(ColumnLayoutData) column.getData(LAYOUT_DATA);
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112 }
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113
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114 void updateColumnData(Widget column) {
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115 TreeColumn tColumn = cast(TreeColumn) column;
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116 Tree t = tColumn.getParent();
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117
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118 if( ! IS_GTK || t.getColumn(t.getColumnCount()-1) !is tColumn ){
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119 tColumn.setData(LAYOUT_DATA,new ColumnPixelData(tColumn.getWidth()));
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120 layout(t.getParent(), true);
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121 }
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122 }
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123 }
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