| /******************************************************************************* |
| * Copyright (c) 2007 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 |
| *******************************************************************************/ |
| |
| package org.eclipse.jface.snippets.viewers; |
| |
| import org.eclipse.jface.viewers.ColumnViewer; |
| import org.eclipse.jface.viewers.ColumnViewerToolTipSupport; |
| import org.eclipse.jface.viewers.IStructuredContentProvider; |
| import org.eclipse.jface.viewers.ITableLabelProvider; |
| import org.eclipse.jface.viewers.LabelProvider; |
| import org.eclipse.jface.viewers.TableViewer; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.jface.window.DefaultToolTip; |
| import org.eclipse.jface.window.ToolTip; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.graphics.Color; |
| import org.eclipse.swt.graphics.GC; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.graphics.Point; |
| import org.eclipse.swt.layout.FillLayout; |
| import org.eclipse.swt.widgets.Button; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.swt.widgets.Event; |
| import org.eclipse.swt.widgets.Item; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.swt.widgets.Table; |
| import org.eclipse.swt.widgets.TableColumn; |
| import org.eclipse.swt.widgets.TableItem; |
| |
| /** |
| * Example usage of ToolTips with the OLD viewer API but similar to |
| * {@link ColumnViewerToolTipSupport} |
| * |
| * @author Tom Schindl <tom.schindl@bestsolution.at> |
| * |
| */ |
| public class Snippet042ToolTipSupportFor32API { |
| private static Image[] images; |
| |
| private static class Cell { |
| private Item item; |
| private int index; |
| |
| public Cell(Item item, int index) { |
| this.item = item; |
| this.index = index; |
| } |
| |
| public Object getData() { |
| return item.getData(); |
| } |
| |
| public int hashCode() { |
| final int prime = 31; |
| int result = 1; |
| result = prime * result + index; |
| result = prime * result + ((item == null) ? 0 : item.hashCode()); |
| return result; |
| } |
| |
| public boolean equals(Object obj) { |
| if (this == obj) |
| return true; |
| if (obj == null) |
| return false; |
| if (getClass() != obj.getClass()) |
| return false; |
| final Cell other = (Cell) obj; |
| if (index != other.index) |
| return false; |
| if (item == null) { |
| if (other.item != null) |
| return false; |
| } else if (!item.equals(other.item)) |
| return false; |
| return true; |
| } |
| |
| } |
| |
| private static class ToolTipSupport extends DefaultToolTip { |
| private Cell cell; |
| private ColumnViewer viewer; |
| |
| protected ToolTipSupport(ColumnViewer viewer, int style, |
| boolean manualActivation) { |
| super(viewer.getControl(), style, manualActivation); |
| this.viewer = viewer; |
| } |
| |
| protected Object getToolTipArea(Event event) { |
| Table table = (Table) event.widget; |
| int columns = table.getColumnCount(); |
| Point point = new Point(event.x, event.y); |
| TableItem item = table.getItem(point); |
| |
| if (item != null) { |
| for (int i = 0; i < columns; i++) { |
| if (item.getBounds(i).contains(point)) { |
| this.cell = new Cell(item, i); |
| return cell; |
| } |
| } |
| } |
| |
| return null; |
| } |
| |
| protected Composite createToolTipContentArea(Event event, |
| Composite parent) { |
| Composite comp = new Composite(parent, SWT.NONE); |
| comp.setLayout(new FillLayout()); |
| Button b = new Button(comp, SWT.PUSH); |
| b.setText(((ITableLabelProvider) viewer.getLabelProvider()) |
| .getColumnText(cell.getData(), cell.index)); |
| b.setImage(((ITableLabelProvider) viewer.getLabelProvider()) |
| .getColumnImage(cell.getData(), cell.index)); |
| |
| return comp; |
| } |
| |
| public static void enableFor(ColumnViewer viewer) { |
| new ToolTipSupport(viewer, ToolTip.NO_RECREATE, false); |
| } |
| } |
| |
| private class MyContentProvider implements IStructuredContentProvider { |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object) |
| */ |
| public Object[] getElements(Object inputElement) { |
| return (MyModel[]) inputElement; |
| } |
| |
| /* |
| * (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) { |
| |
| } |
| |
| } |
| |
| public class MyModel { |
| public int counter; |
| |
| public MyModel(int counter) { |
| this.counter = counter; |
| } |
| |
| public String toString() { |
| return "Item " + this.counter; |
| } |
| } |
| |
| public class MyLabelProvider extends LabelProvider implements |
| ITableLabelProvider { |
| |
| public Image getColumnImage(Object element, int columnIndex) { |
| if (columnIndex == 1) { |
| return images[((MyModel) element).counter % 4]; |
| } |
| |
| return null; |
| } |
| |
| public String getColumnText(Object element, int columnIndex) { |
| return "Column " + columnIndex + " => " + element.toString(); |
| } |
| |
| } |
| |
| private static Image createImage(Display display, int red, int green, |
| int blue) { |
| Color color = new Color(display, red, green, blue); |
| Image image = new Image(display, 10, 10); |
| GC gc = new GC(image); |
| gc.setBackground(color); |
| gc.fillRectangle(0, 0, 10, 10); |
| gc.dispose(); |
| |
| return image; |
| } |
| |
| public Snippet042ToolTipSupportFor32API(Shell shell) { |
| final TableViewer v = new TableViewer(shell, SWT.BORDER |
| | SWT.FULL_SELECTION); |
| v.setLabelProvider(new MyLabelProvider()); |
| v.setContentProvider(new MyContentProvider()); |
| |
| TableColumn column = new TableColumn(v.getTable(), SWT.NONE); |
| column.setWidth(200); |
| column.setText("Column 1"); |
| |
| column = new TableColumn(v.getTable(), SWT.NONE); |
| column.setWidth(200); |
| column.setText("Column 2"); |
| |
| MyModel[] model = createModel(); |
| v.setInput(model); |
| ToolTipSupport.enableFor(v); |
| v.getTable().setLinesVisible(true); |
| v.getTable().setHeaderVisible(true); |
| } |
| |
| private MyModel[] createModel() { |
| MyModel[] elements = new MyModel[10]; |
| |
| for (int i = 0; i < 10; i++) { |
| elements[i] = new MyModel(i); |
| } |
| |
| return elements; |
| } |
| |
| /** |
| * @param args |
| */ |
| public static void main(String[] args) { |
| Display display = new Display(); |
| |
| images = new Image[4]; |
| images[0] = createImage(display, 0, 0, 255); |
| images[1] = createImage(display, 0, 255, 255); |
| images[2] = createImage(display, 0, 255, 0); |
| images[3] = createImage(display, 255, 0, 255); |
| |
| Shell shell = new Shell(display); |
| shell.setLayout(new FillLayout()); |
| new Snippet042ToolTipSupportFor32API(shell); |
| shell.open(); |
| |
| while (!shell.isDisposed()) { |
| if (!display.readAndDispatch()) |
| display.sleep(); |
| } |
| |
| for (int i = 0; i < images.length; i++) { |
| images[i].dispose(); |
| } |
| |
| display.dispose(); |
| |
| } |
| |
| } |