Mercurial > projects > dwt-samples
diff snippets/treeeditor/Snippet111.d @ 84:398aa64a7243
Two new snippets -- don't quite work yet though.
author | Bill Baxter <bill@billbaxter.com> |
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date | Sat, 17 May 2008 13:06:43 +0900 |
parents | |
children | fa286c85e7b8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/snippets/treeeditor/Snippet111.d Sat May 17 13:06:43 2008 +0900 @@ -0,0 +1,134 @@ +/******************************************************************************* + * Copyright (c) 2000, 2004 IBM Corporation and others. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * IBM Corporation - initial API and implementation + * D Port: + * Bill Baxter <wbaxter@gmail.com> + *******************************************************************************/ +module dwtsnippets.treeeditor.Snippet111; + +/* + * TreeEditor example snippet: edit the text of a tree item (in place, fancy) + * + * For a list of all SWT example snippets see + * http://www.eclipse.org/swt/snippets/ + */ +import dwt.DWT; +import dwt.graphics.Color; +import dwt.graphics.Rectangle; +import dwt.graphics.GC; +import dwt.widgets.Display; +import dwt.widgets.Shell; +import dwt.widgets.Widget; +import dwt.widgets.Composite; +import dwt.widgets.Tree; +import dwt.widgets.TreeItem; +import dwt.widgets.Text; +import dwt.widgets.Listener; +import dwt.widgets.Event; +import dwt.layout.FillLayout; +import dwt.custom.TreeEditor; + +import dwt.dwthelper.utils : String, substring, Math; +import std.stdio; + +import tango.util.Convert; + +void main () { + final Display display = new Display (); + final Color black = display.getSystemColor (DWT.COLOR_BLACK); + Shell shell = new Shell (display); + shell.setLayout (new FillLayout ()); + final Tree tree = new Tree (shell, DWT.BORDER); + for (int i=0; i<16; i++) { + TreeItem itemI = new TreeItem (tree, DWT.NONE); + itemI.setText ("Item " ~ to!(char[])(i)); + for (int j=0; j<16; j++) { + TreeItem itemJ = new TreeItem (itemI, DWT.NONE); + itemJ.setText ("Item " ~ to!(char[])(j) ); + } + } + final TreeItem [] lastItem = new TreeItem [1]; + final TreeEditor editor = new TreeEditor (tree); + tree.addListener (DWT.Selection, new class Listener { + public void handleEvent (Event event) { + final TreeItem item = cast(TreeItem) event.item; + if (item !is null && item is lastItem [0]) { + bool showBorder = true; + final Composite composite = new Composite (tree, DWT.NONE); + if (showBorder) composite.setBackground (black); + final Text text = new Text (composite, DWT.NONE); + final int inset = showBorder ? 1 : 0; + composite.addListener (DWT.Resize, new class Listener { + public void handleEvent (Event e) { + Rectangle rect = composite.getClientArea (); + text.setBounds (rect.x + inset, rect.y + inset, rect.width - inset * 2, rect.height - inset * 2); + } + }); + Listener textListener = new class Listener { + public void handleEvent (Event e) { + switch (e.type) { + case DWT.FocusOut: { + item.setText (text.getText ()); + composite.dispose (); + } + break; + case DWT.Verify: { + String newText = text.getText (); + String leftText = newText.substring (0, e.start); + String rightText = newText.substring (e.end, newText.length); + GC gc = new GC (text); + Point size = gc.textExtent (leftText ~ e.text ~ rightText); + gc.dispose (); + size = text.computeSize (size.x, DWT.DEFAULT); + editor.horizontalAlignment = DWT.LEFT; + Rectangle itemRect = item.getBounds (), rect = tree.getClientArea (); + editor.minimumWidth = Math.max (size.x, itemRect.width) + inset * 2; + int left = itemRect.x, right = rect.x + rect.width; + editor.minimumWidth = Math.min (editor.minimumWidth, right - left); + editor.minimumHeight = size.y + inset * 2; + editor.layout (); + } + break; + case DWT.Traverse: { + switch (e.detail) { + case DWT.TRAVERSE_RETURN: + item.setText (text.getText ()); + //FALL THROUGH + case DWT.TRAVERSE_ESCAPE: + composite.dispose (); + e.doit = false; + default: + //no-op + } + break; + } + default: + // no-op + } + } + }; + text.addListener (DWT.FocusOut, textListener); + text.addListener (DWT.Traverse, textListener); + text.addListener (DWT.Verify, textListener); + editor.setEditor (composite, item); + text.setText (item.getText ()); + text.selectAll (); + text.setFocus (); + } + lastItem [0] = item; + } + }); + shell.pack (); + shell.open (); + while (!shell.isDisposed()) { + if (!display.readAndDispatch ()) display.sleep (); + } + display.dispose (); +} +