| /******************************************************************************* |
| * Copyright (c) 2005, 2012 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.bpel.ui.properties; |
| |
| import org.eclipse.bpel.common.ui.command.ICommandFramework; |
| import org.eclipse.bpel.common.ui.details.IOngoingChange; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.custom.CCombo; |
| import org.eclipse.swt.widgets.Button; |
| import org.eclipse.swt.widgets.Combo; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Control; |
| import org.eclipse.swt.widgets.Event; |
| import org.eclipse.swt.widgets.Listener; |
| import org.eclipse.swt.widgets.Text; |
| |
| |
| /** |
| * Tracks changes on controls and execute commands to report them. |
| */ |
| public class ChangeTracker { |
| |
| protected IOngoingChange fChange; |
| protected ICommandFramework fFramework; |
| protected boolean fIsTracking; |
| |
| /** |
| * Brand new shiny change tracker. |
| * |
| * @param target |
| * @param change |
| * @param framework |
| */ |
| public ChangeTracker(Control target, IOngoingChange change, ICommandFramework framework) { |
| this(change, framework, target ); |
| } |
| |
| /** |
| * Brand new shiny change tracker. |
| * @param change |
| * @param framework |
| * @param targets |
| */ |
| |
| public ChangeTracker(IOngoingChange change, ICommandFramework framework, Control ... targets ) { |
| this.fChange = change; |
| this.fFramework = framework; |
| fIsTracking = true; |
| for (Control c : targets ) { |
| addListeners(c); |
| } |
| } |
| |
| /** |
| * Start tracking changes. |
| */ |
| public void startTracking() { |
| fIsTracking = true; |
| } |
| |
| /** |
| * Stop tracking changes. |
| */ |
| |
| public void stopTracking() { |
| fIsTracking = false; |
| } |
| |
| protected void addListeners(Control target) { |
| if (target instanceof Text) { |
| trackModify(target); |
| trackFocus(target); |
| trackEnterKey(target); |
| } else if (target instanceof Button) { |
| trackSelection(target); |
| } else if (target instanceof Composite) { |
| trackFocus(target); |
| trackSelection(target); |
| } else if (target instanceof CCombo) { |
| trackFocus(target); |
| trackSelection(target); |
| trackEnterKey(target); |
| } else if (target instanceof Combo) { |
| trackFocus(target); |
| trackSelection(target); |
| trackEnterKey(target); |
| } |
| } |
| |
| protected void trackSelection(Control target) { |
| target.addListener(SWT.Selection, new Listener() { |
| public void handleEvent(Event event) { |
| if (fIsTracking) { |
| fFramework.notifyChangeInProgress(fChange); |
| fFramework.notifyChangeDone(fChange); |
| } |
| } |
| }); |
| } |
| |
| protected void trackFocus(Control target) { |
| target.addListener(SWT.FocusOut, new Listener() { |
| public void handleEvent(Event event) { |
| if (fIsTracking) { |
| fFramework.notifyChangeDone(fChange); |
| } |
| } |
| }); |
| } |
| |
| protected void trackEnterKey(Control target) { |
| target.addListener(SWT.KeyDown, new Listener() { |
| public void handleEvent(Event event) { |
| if (fIsTracking && event.keyCode == SWT.CR) { |
| fFramework.notifyChangeDone(fChange); |
| } |
| } |
| }); |
| } |
| |
| protected void trackModify(Control target) { |
| target.addListener(SWT.Modify, new Listener() { |
| public void handleEvent(Event event) { |
| if (fIsTracking) { |
| fFramework.notifyChangeInProgress(fChange); |
| } |
| } |
| }); |
| } |
| } |