| /******************************************************************************* |
| * Copyright (c) 2009, 2010 Oracle. 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: |
| * Oracle - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.jpt.common.ui.internal.utility.swt; |
| |
| import org.eclipse.jpt.utility.model.value.PropertyValueModel; |
| import org.eclipse.swt.widgets.Control; |
| |
| /** |
| * This controller enables a boolean model to control either the |
| * <em>enabled</em> or <em>visible</em> properties of an SWT control; i.e. the |
| * control's property is kept in synch with the boolean model, |
| * but <em>not</em> vice-versa. |
| * <p> |
| * Once the control is disposed, this controller is kaput. |
| * |
| * @see PropertyValueModel |
| * @see Control#setEnabled(boolean) |
| * @see Control#setVisible(boolean) |
| */ |
| final class SimpleBooleanStateController |
| extends BooleanStateController |
| { |
| private final Control control; |
| |
| |
| // ********** constructor ********** |
| |
| /** |
| * Constructor - the boolean model, the control, and the adapter are required. |
| */ |
| SimpleBooleanStateController( |
| PropertyValueModel<Boolean> booleanModel, |
| Control control, |
| boolean defaultValue, |
| Adapter adapter |
| ) { |
| super(booleanModel, defaultValue, adapter); |
| if (control == null) { |
| throw new NullPointerException(); |
| } |
| this.control = control; |
| this.engageBooleanModel(); |
| this.engageControl(control); |
| this.setControlState(control, this.getBooleanValue()); |
| } |
| |
| |
| // ********** controls ********** |
| |
| @Override |
| void setControlState(boolean b) { |
| this.setControlState(this.control, b); |
| } |
| |
| @Override |
| void controlDisposed(Control c) { |
| super.controlDisposed(c); |
| this.disengageBooleanModel(); |
| } |
| |
| } |