Mercurial > projects > dwt2
view org.eclipse.jface.snippets/EclipseJfaceSnippets/org/eclipse/jface/snippets/window/Snippet023TreeViewerCustomTooltips.d @ 31:5d87d4191adf
Added JFace Snippets sources
author | Frank Benoit <benoit@tionex.de> |
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date | Mon, 23 Mar 2009 11:16:06 +0100 |
parents | |
children | c4b36186a9bc |
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/******************************************************************************* * 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 *******************************************************************************/ module dwtx.jface.snippets.window.Snippet023TreeViewerCustomTooltips; import dwtx.jface.viewers.CellLabelProvider; import dwtx.jface.viewers.ITreeContentProvider; import dwtx.jface.viewers.LabelProvider; import dwtx.jface.viewers.TreeViewer; import dwtx.jface.viewers.Viewer; import dwt.DWT; import dwt.graphics.Point; import dwt.graphics.Rectangle; import dwt.layout.FillLayout; import dwt.widgets.Display; import dwt.widgets.Event; import dwt.widgets.Label; import dwt.widgets.Listener; import dwt.widgets.Shell; import dwt.widgets.TreeItem; import dwtx.dwtxhelper.Collection; import dwt.dwthelper.utils; import tango.text.convert.Format; import tango.util.log.Trace; /** * A simple TreeViewer to demonstrate how custom tooltips could be created * easily. This is an extended version from * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/dwt.snippets/src/org/eclipse/swt/snippets/Snippet125.java * * This code is for users pre 3.3 others could use newly added tooltip support in * {@link CellLabelProvider} * * @author Tom Schindl <tom.schindl@bestsolution.at> * */ public class Snippet023TreeViewerCustomTooltips { private class MyContentProvider : ITreeContentProvider { /* * (non-Javadoc) * * @see dwtx.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object) */ public Object[] getElements(Object inputElement) { return (cast(MyModel) inputElement).child.toArray(); } /* * (non-Javadoc) * * @see dwtx.jface.viewers.IContentProvider#dispose() */ public void dispose() { } /* * (non-Javadoc) * * @see dwtx.jface.viewers.IContentProvider#inputChanged(dwtx.jface.viewers.Viewer, * java.lang.Object, java.lang.Object) */ public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { } /* * (non-Javadoc) * * @see dwtx.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object) */ public Object[] getChildren(Object parentElement) { return getElements(parentElement); } /* * (non-Javadoc) * * @see dwtx.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 dwtx.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object) */ public bool hasChildren(Object element) { return (cast(MyModel) element).child.size() > 0; } } public class MyModel { public MyModel parent; public ArrayList child; public int counter; public this(int counter, MyModel parent) { this.parent = parent; this.counter = counter; child = new ArrayList(); } public String toString() { return Format( "Item {}{}", (parent !is null) ? "." : "", counter ); } } TreeViewer v; Listener labelListener; public this(Shell shell) { v = new TreeViewer(shell); v.setLabelProvider(new LabelProvider()); v.setContentProvider(new MyContentProvider()); v.setInput(createModel()); v.getTree().setToolTipText(""); labelListener = dgListener ( (Event event){ Label label = cast(Label)event.widget; Shell shell_ = label.getShell (); switch (event.type) { case DWT.MouseDown: Event e = new Event (); e.item = cast(TreeItem) label.getData ("_TABLEITEM"); // Assuming table is single select, set the selection as if // the mouse down event went through to the table v.getTree().setSelection ([cast(TreeItem) e.item]); v.getTree().notifyListeners (DWT.Selection, e); shell_.dispose (); v.getTree().setFocus(); break; case DWT.MouseExit: shell_.dispose (); break; default: } }); Listener treeListener = new MyTreeListener(); v.getTree().addListener (DWT.Dispose, treeListener); v.getTree().addListener (DWT.KeyDown, treeListener); v.getTree().addListener (DWT.MouseMove, treeListener); v.getTree().addListener (DWT.MouseHover, treeListener); } class MyTreeListener : Listener { Shell tip = null; Label label = null; public void handleEvent (Event event) { switch (event.type) { case DWT.Dispose: case DWT.KeyDown: case DWT.MouseMove: { if (tip is null) break; tip.dispose (); tip = null; label = null; break; } case DWT.MouseHover: { Point coords = new Point(event.x, event.y); TreeItem item = v.getTree().getItem(coords); if (item !is null) { int columns = v.getTree().getColumnCount(); for (int i = 0; i < columns || i is 0; i++) { if (item.getBounds(i).contains(coords)) { if (tip !is null && !tip.isDisposed ()) tip.dispose (); tip = new Shell (v.getTree().getShell(), DWT.ON_TOP | DWT.NO_FOCUS | DWT.TOOL); tip.setBackground (v.getTree().getDisplay().getSystemColor (DWT.COLOR_INFO_BACKGROUND)); FillLayout layout = new FillLayout (); layout.marginWidth = 2; tip.setLayout (layout); label = new Label (tip, DWT.NONE); label.setForeground (v.getTree().getDisplay().getSystemColor (DWT.COLOR_INFO_FOREGROUND)); label.setBackground (v.getTree().getDisplay().getSystemColor (DWT.COLOR_INFO_BACKGROUND)); label.setData ("_TABLEITEM", item); label.setText (Format("Tooltip: {} => {}", item.getData(), i)); label.addListener (DWT.MouseExit, labelListener); label.addListener (DWT.MouseDown, labelListener); Point size = tip.computeSize (DWT.DEFAULT, DWT.DEFAULT); Rectangle rect = item.getBounds (i); Point pt = v.getTree().toDisplay (rect.x, rect.y); tip.setBounds (pt.x, pt.y, size.x, size.y); tip.setVisible (true); break; } } } } default: } } }; 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.add(tmp); for (int j = 1; j < i; j++) { tmp.child.add(new MyModel(j, tmp)); } } return root; } public static void main(String[] args) { Display display = new Display(); Shell shell = new Shell(display); shell.setLayout(new FillLayout()); new Snippet023TreeViewerCustomTooltips(shell); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); } } void main(){ Snippet023TreeViewerCustomTooltips.main(null); }