/*******************************************************************************
* Copyright (c) 2007, 2016 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
* Lars Vogel <Lars.Vogel@vogella.com> - Bug 413427, 510301
* Simon Scholz <simon.scholz@vogella.com> - Bug 442343
*******************************************************************************/
package org.eclipse.jface.snippets.viewers;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ColumnViewer;
import org.eclipse.jface.viewers.ColumnViewerToolTipSupport;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.TableViewer;
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();
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + index;
result = prime * result + ((item == null) ? 0 : item.hashCode());
return result;
}
@Override
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;
}
@Override
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;
}
@Override
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);
}
}
public class MyModel {
public int counter;
public MyModel(int counter) {
this.counter = counter;
}
@Override
public String toString() {
return "Item " + this.counter;
}
}
public class MyLabelProvider extends LabelProvider implements
ITableLabelProvider {
@Override
public Image getColumnImage(Object element, int columnIndex) {
if (columnIndex == 1) {
return images[((MyModel) element).counter % 4];
}
return null;
}
@Override
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(ArrayContentProvider.getInstance());
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 (Image image : images) {
image.dispose();
}
display.dispose();
}
}