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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2004 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 * D Port:
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11 * Bill Baxter <wbaxter@gmail.com>
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12 *******************************************************************************/
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13 module org.eclipse.swt.snippets.Snippet111;
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14
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15 /*
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16 * TreeEditor example snippet: edit the text of a tree item (in place, fancy)
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17 *
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18 * For a list of all SWT example snippets see
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19 * http://www.eclipse.org/swt/snippets/
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20 */
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21 import org.eclipse.swt.SWT;
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22 import org.eclipse.swt.graphics.Color;
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23 import org.eclipse.swt.graphics.Rectangle;
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24 import org.eclipse.swt.graphics.GC;
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25 import org.eclipse.swt.widgets.Display;
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26 import org.eclipse.swt.widgets.Shell;
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27 import org.eclipse.swt.widgets.Widget;
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28 import org.eclipse.swt.widgets.Composite;
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29 import org.eclipse.swt.widgets.Tree;
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30 import org.eclipse.swt.widgets.TreeItem;
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31 import org.eclipse.swt.widgets.Text;
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32 import org.eclipse.swt.widgets.Listener;
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33 import org.eclipse.swt.widgets.Event;
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34 import org.eclipse.swt.layout.FillLayout;
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35 import org.eclipse.swt.custom.TreeEditor;
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36
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37 import java.lang.all : String, substring, Math;
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38
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39 import tango.util.Convert;
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40 import tango.util.log.Trace;
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41 version(JIVE){
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42 import jive.stacktrace;
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43 }
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44
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45 void main () {
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46
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47 Tree tree;
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48 Color black;
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49 void handleResize (Event e, Composite composite, Text text, int inset ) {
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50 Rectangle rect = composite.getClientArea ();
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51 text.setBounds (rect.x + inset, rect.y + inset, rect.width - inset * 2, rect.height - inset * 2);
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52 }
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53 void handleTextEvent (Event e, Composite composite, TreeItem item, TreeEditor editor,Text text, int inset ) {
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54 switch (e.type) {
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55 case SWT.FocusOut: {
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56 item.setText (text.getText ());
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57 composite.dispose ();
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58 }
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59 break;
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60 case SWT.Verify: {
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61 String newText = text.getText ();
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62 String leftText = newText.substring (0, e.start);
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63 String rightText = newText.substring (e.end, newText.length);
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64 GC gc = new GC (text);
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65 Point size = gc.textExtent (leftText ~ e.text ~ rightText);
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66 gc.dispose ();
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67 size = text.computeSize (size.x, SWT.DEFAULT);
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68 editor.horizontalAlignment = SWT.LEFT;
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69 Rectangle itemRect = item.getBounds (), rect = tree.getClientArea ();
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70 editor.minimumWidth = Math.max (size.x, itemRect.width) + inset* 2;
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71 int left = itemRect.x, right = rect.x + rect.width;
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72 editor.minimumWidth = Math.min (editor.minimumWidth, right - left);
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73 editor.minimumHeight = size.y + inset* 2;
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74 editor.layout ();
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75 }
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76 break;
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77 case SWT.Traverse: {
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78 switch (e.detail) {
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79 case SWT.TRAVERSE_RETURN:
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80 item.setText (text.getText ());
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81 //FALL THROUGH
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82 case SWT.TRAVERSE_ESCAPE:
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83 composite.dispose ();
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84 e.doit = false;
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85 default:
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86 //no-op
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87 }
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88 break;
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89 }
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90 default:
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91 // no-op
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92 }
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93 }
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94 void handleSelection (Event event, TreeItem[] lastItem, TreeEditor editor ) {
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95 TreeItem item = cast(TreeItem) event.item;
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96 if (item !is null && item is lastItem [0]) {
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97 bool showBorder = true;
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98 Composite composite = new Composite (tree, SWT.NONE);
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99 if (showBorder) composite.setBackground (black);
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100 Text text = new Text (composite, SWT.NONE);
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101 int inset = showBorder ? 1 : 0;
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102 composite.addListener (SWT.Resize, dgListener( &handleResize, composite, text, inset ));
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103 Listener textListener = dgListener( &handleTextEvent, composite, item, editor, text, inset);
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104 text.addListener (SWT.FocusOut, textListener);
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105 text.addListener (SWT.Traverse, textListener);
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106 text.addListener (SWT.Verify, textListener);
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107 editor.setEditor (composite, item);
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108 text.setText (item.getText ());
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109 text.selectAll ();
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110 text.setFocus ();
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111 }
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112 lastItem [0] = item;
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113 }
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114
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115 Display display = new Display ();
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116 black = display.getSystemColor (SWT.COLOR_BLACK);
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117 Shell shell = new Shell (display);
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118 shell.setLayout (new FillLayout ());
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119 tree = new Tree (shell, SWT.BORDER);
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120 for (int i=0; i<16; i++) {
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121 TreeItem itemI = new TreeItem (tree, SWT.NONE);
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122 itemI.setText ("Item " ~ to!(char[])(i));
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123 for (int j=0; j<16; j++) {
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124 TreeItem itemJ = new TreeItem (itemI, SWT.NONE);
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125 itemJ.setText ("Item " ~ to!(char[])(j) );
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126 }
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127 }
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128 TreeItem [] lastItem = new TreeItem [1];
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129 TreeEditor editor = new TreeEditor (tree);
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130 tree.addListener (SWT.Selection, dgListener( &handleSelection, lastItem, editor ));
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131 shell.pack ();
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132 shell.open ();
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133 while (!shell.isDisposed()) {
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134 if (!display.readAndDispatch ()) display.sleep ();
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135 }
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136 display.dispose ();
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137 }
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138
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139
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