Mercurial > projects > dwt-samples
diff jface/snippets/Snippet002TreeViewer.d @ 89:cbba80cceb7a
Port of jface Snippets 1,2,4,5,7
author | Bill Baxter <bill@billbaxter.com> |
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date | Mon, 19 May 2008 23:42:48 +0900 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/jface/snippets/Snippet002TreeViewer.d Mon May 19 23:42:48 2008 +0900 @@ -0,0 +1,146 @@ +/******************************************************************************* + * Copyright (c) 2006 Tom Schindl 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: + * Tom Schindl - initial API and implementation + * Port to the D programming language: + * wbaxter at gmail dot com + *******************************************************************************/ + +module jface.snippets.Snippet002TreeViewer; + +import dwt.DWT; +import dwtx.jface.viewers.ITreeContentProvider; +import dwtx.jface.viewers.LabelProvider; +import dwtx.jface.viewers.TreeViewer; +import dwtx.jface.viewers.Viewer; +import dwt.layout.FillLayout; +import dwt.widgets.Display; +import dwt.widgets.Shell; + +import dwt.dwthelper.utils; + +import tango.util.Convert; + +/** + * A simple TreeViewer to demonstrate usage + * + * @author Tom Schindl <tom.schindl@bestsolution.at> + * + */ +class Snippet002TreeViewer { + private class MyContentProvider : ITreeContentProvider { + + /* (non-Javadoc) + * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object) + */ + public Object[] getElements(Object inputElement) { + return (cast(MyModel)inputElement).child/*.dup*/; + } + + /* (non-Javadoc) + * @see org.eclipse.jface.viewers.IContentProvider#dispose() + */ + public void dispose() { + + } + + /* (non-Javadoc) + * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object) + */ + public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { + + } + + /* (non-Javadoc) + * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object) + */ + public Object[] getChildren(Object parentElement) { + return getElements(parentElement); + } + + /* (non-Javadoc) + * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object) + */ + public Object getParent(Object element) { + if( element is null) { + return null; + } + + return (cast(MyModel)element).parent; + } + + /* (non-Javadoc) + * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object) + */ + public bool hasChildren(Object element) { + return (cast(MyModel)element).child.length > 0; + } + + } + + public class MyModel { + public MyModel parent; + public MyModel[] child; + public int counter; + + public this(int counter, MyModel parent) { + this.parent = parent; + this.counter = counter; + } + + public String toString() { + String rv = "Item "; + if( parent !is null ) { + rv = parent.toString() ~ "."; + } + + rv ~= to!(char[])(counter); + + return rv; + } + } + + public this(Shell shell) { + TreeViewer v = new TreeViewer(shell); + v.setLabelProvider(new LabelProvider()); + v.setContentProvider(new MyContentProvider()); + v.setInput(createModel()); + } + + private MyModel createModel() { + MyModel root = new MyModel(0,null); + root.counter = 0; + + MyModel tmp; + for( int i = 1; i < 10; i++ ) { + tmp = new MyModel(i, root); + root.child ~= tmp; + for( int j = 1; j < i; j++ ) { + tmp.child ~= new MyModel(j,tmp); + } + } + + return root; + } + +} + + +void main() { + Display display = new Display (); + Shell shell = new Shell(display); + shell.setLayout(new FillLayout()); + new Snippet002TreeViewer(shell); + shell.open (); + + while (!shell.isDisposed ()) { + if (!display.readAndDispatch ()) display.sleep (); + } + + display.dispose (); +}