| /******************************************************************************* |
| * Copyright (c) 2007 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 |
| ******************************************************************************/ |
| |
| package org.eclipse.jface.snippets.viewers; |
| |
| import java.util.ArrayList; |
| |
| import org.eclipse.jface.viewers.ColumnViewer; |
| import org.eclipse.jface.viewers.StructuredSelection; |
| import org.eclipse.jface.viewers.ViewerCell; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.graphics.Point; |
| import org.eclipse.swt.widgets.Canvas; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Event; |
| import org.eclipse.swt.widgets.Listener; |
| |
| /** |
| * @since 3.3 |
| * |
| */ |
| public abstract class AbstractCellCursor extends Canvas { |
| private ViewerCell[] cells = new ViewerCell[0]; |
| |
| private ColumnViewer viewer; |
| |
| private int activationTime = 0; |
| |
| private boolean inFocusRequest = false; |
| |
| /** |
| * @param viewer |
| * @param style |
| */ |
| public AbstractCellCursor(ColumnViewer viewer, int style) { |
| super((Composite) viewer.getControl(),style); |
| this.viewer = viewer; |
| |
| Listener l = new Listener() { |
| |
| public void handleEvent(Event event) { |
| switch (event.type) { |
| case SWT.Paint: |
| paint(event); |
| break; |
| case SWT.KeyDown: |
| getParent().notifyListeners(SWT.KeyDown, event); |
| ArrayList list = new ArrayList(); |
| for( int i = 0; i < cells.length; i++ ) { |
| list.add(cells[i].getElement()); |
| } |
| AbstractCellCursor.this.viewer.setSelection(new StructuredSelection(list)); |
| |
| break; |
| case SWT.MouseDown: |
| if( event.time < activationTime ) { |
| Event cEvent = copyEvent(event); |
| cEvent.type = SWT.MouseDoubleClick; |
| getParent().notifyListeners(SWT.MouseDoubleClick, cEvent); |
| } else { |
| getParent().notifyListeners(SWT.MouseDown, copyEvent(event)); |
| } |
| break; |
| case SWT.MouseDoubleClick: |
| getParent().notifyListeners(SWT.MouseDoubleClick, copyEvent(event)); |
| break; |
| case SWT.FocusIn: |
| if( isVisible() ) { |
| inFocusRequest = true; |
| if( ! inFocusRequest ) { |
| forceFocus(); |
| } |
| inFocusRequest = false; |
| } |
| default: |
| break; |
| } |
| } |
| }; |
| |
| addListener(SWT.Paint, l); |
| addListener(SWT.KeyDown, l); |
| addListener(SWT.MouseDown, l); |
| addListener(SWT.MouseDoubleClick, l); |
| getParent().addListener(SWT.FocusIn,l); |
| } |
| |
| /** |
| * @param cell |
| * @param eventTime |
| */ |
| public void setSelection(ViewerCell cell, int eventTime) { |
| this.cells = new ViewerCell[] { cell }; |
| setBounds(cell.getBounds()); |
| forceFocus(); |
| redraw(); |
| activationTime = eventTime + getDisplay().getDoubleClickTime(); |
| } |
| |
| /** |
| * @return the cells who should be highlighted |
| */ |
| protected ViewerCell[] getSelectedCells() { |
| return cells; |
| } |
| |
| private Event copyEvent(Event event) { |
| Event cEvent = new Event(); |
| cEvent.button = event.button; |
| cEvent.character = event.character; |
| cEvent.count = event.count; |
| cEvent.data = event.data; |
| cEvent.detail = event.detail; |
| cEvent.display = event.display; |
| cEvent.doit = event.doit; |
| cEvent.end = event.end; |
| cEvent.gc = event.gc; |
| cEvent.height = event.height; |
| cEvent.index = event.index; |
| cEvent.item = getSelectedCells()[0].getControl(); |
| cEvent.keyCode = event.keyCode; |
| cEvent.start = event.start; |
| cEvent.stateMask = event.stateMask; |
| cEvent.text = event.text; |
| cEvent.time = event.time; |
| cEvent.type = event.type; |
| cEvent.widget = event.widget; |
| cEvent.width = event.width; |
| Point p = viewer.getControl().toControl(toDisplay(event.x, event.y)); |
| cEvent.x = p.x; |
| cEvent.y = p.y; |
| |
| return cEvent; |
| } |
| |
| /** |
| * @param event |
| */ |
| protected abstract void paint(Event event); |
| } |