001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
039: * made subject to such option by the copyright holder.
040: */
041:
042: package org.netbeans.modules.uml.core.eventframework;
043:
044: import org.netbeans.modules.uml.core.coreapplication.ICoreProduct;
045: import org.netbeans.modules.uml.core.support.umlsupport.ProductRetriever;
046:
047: /**
048: * @author sumitabhk
049: *
050: */
051: public class EventBlocker {
052:
053: private IEventDispatcher m_Dispatch = null;
054: private IEventDispatchController m_Controller = null;
055: private boolean m_OrigFlag = false;
056:
057: /**
058: *
059: */
060: private EventBlocker() {
061: super ();
062: }
063:
064: /**
065: * EventBlocker constructor. Calls the put_PreventAllEvents( true )
066: * on the passed in IEventDispatcher.
067: */
068: public static boolean startBlocking(IEventDispatcher dispatcher) {
069: //m_OrigFlag = false;
070: //m_Controller = null;
071:
072: boolean retVal = false;
073:
074: if (dispatcher != null) {
075: retVal = dispatcher.getPreventAllEvents();
076: dispatcher.setPreventAllEvents(true);
077: }
078:
079: return retVal;
080: }
081:
082: /**
083: * Prevents all event from going out on any and every dispatcher that the
084: * passed in controller manages. If the passed in controller is 0, then
085: * the CoreProduct is retrieved, and the EventDispatchController on that
086: * product is used.
087: *
088: * @param controller[in] The controller to prevent events on. If null, the
089: * controller on the CoreProduct is used.
090: */
091: public static boolean startBlocking(
092: IEventDispatchController controller) {
093: boolean retVal = false;
094:
095: ICoreProduct coreProd = null;
096:
097: IEventDispatchController curController = controller;
098: if (curController == null) {
099: coreProd = ProductRetriever.retrieveProduct();
100:
101: if (coreProd != null) {
102: curController = coreProd.getEventDispatchController();
103: }
104: }
105:
106: if (curController != null) {
107: retVal = curController.getPreventAllEvents();
108: curController.setPreventAllEvents(true);
109: }
110:
111: return retVal;
112: }
113:
114: public static boolean startBlocking() {
115: boolean retVal = false;
116:
117: ICoreProduct product = ProductRetriever.retrieveProduct();
118: if (product != null) {
119: retVal = startBlocking(product.getEventDispatchController());
120: }
121:
122: return retVal;
123: }
124:
125: public static void stopBlocking(boolean origFlag,
126: IEventDispatcher dispatcher) {
127: if (dispatcher != null) {
128: dispatcher.setPreventAllEvents(origFlag);
129: }
130: }
131:
132: public static void stopBlocking(boolean origFlag,
133: IEventDispatchController controller) {
134: if (controller != null) {
135: controller.setPreventAllEvents(origFlag);
136: }
137: }
138:
139: public static void stopBlocking(boolean origFlag) {
140: ICoreProduct product = ProductRetriever.retrieveProduct();
141: if (product != null) {
142: stopBlocking(origFlag, product.getEventDispatchController());
143: }
144: }
145: }
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