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 1997-2006 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: package org.netbeans.modules.vmd.api.flow;
042:
043: import org.netbeans.modules.vmd.api.flow.visual.*;
044: import org.netbeans.modules.vmd.api.model.Debug;
045:
046: import java.util.Collection;
047: import java.util.Collections;
048:
049: /**
050: * This presenter manages a single edge.
051: *
052: * @author David Kaspar
053: */
054: public abstract class FlowEdgePresenter extends FlowPresenter implements
055: FlowPresenter.FlowUIResolver {
056:
057: private FlowPresenter.FlowUIResolver resolver = new FlowUIResolver() {
058: public FlowDescriptor.Decorator getDecorator() {
059: return FlowEdgePresenter.this .getDynamicPinDecorator();
060: }
061:
062: public FlowDescriptor.Behaviour getBehaviour() {
063: return FlowEdgePresenter.this .getDynamicPinBehaviour();
064: }
065: };
066:
067: private FlowEdgeDescriptor edge = null;
068:
069: private FlowEdgeDescriptor newEdge;
070: private boolean removeAdd;
071:
072: public final void resolveRemoveBadge() {
073: }
074:
075: public final void resolveRemoveEdge() {
076: newEdge = isVisible() ? getEdgeDescriptor() : null;
077: removeAdd = !equals(edge, newEdge);
078:
079: if (removeAdd) {
080: if (edge != null) {
081: removeDettachSourcePin(edge);
082: removeDettachTargetPin(edge);
083: FlowScene scene = getScene();
084: scene.removeEdge(edge);
085: scene.unregisterUI(edge, this );
086: }
087: }
088: }
089:
090: public final void resolveRemovePin() {
091: }
092:
093: public final void resolveRemoveNode() {
094: }
095:
096: public final void resolveAddNode() {
097: }
098:
099: public final void resolveAddPin() {
100: }
101:
102: public final void resolveAddEdge() {
103: if (removeAdd) {
104: edge = newEdge;
105: if (edge != null) {
106: FlowScene scene = getScene();
107: scene.registerUI(edge, this );
108: scene.addEdge(edge);
109: scene.updateBadges(edge);
110: createAssignSourcePin(edge);
111: createAssignTargetPin(edge);
112:
113: }
114: } else if (edge != null && newEdge != null) {
115: boolean sourceChanged = !equals(edge
116: .getSourcePinDescriptor(), newEdge
117: .getSourcePinDescriptor())
118: || edge.isDynamicSourcePin() != newEdge
119: .isDynamicSourcePin();
120: boolean targetChanged = !equals(edge
121: .getTargetPinDescriptor(), newEdge
122: .getTargetPinDescriptor())
123: || edge.isDynamicTargetPin() != newEdge
124: .isDynamicTargetPin();
125:
126: if (sourceChanged)
127: removeDettachSourcePin(edge);
128: if (targetChanged)
129: removeDettachTargetPin(edge);
130:
131: edge.update(newEdge);
132:
133: createAssignSourcePin(edge);
134: createAssignTargetPin(edge);
135: }
136: newEdge = null;
137: }
138:
139: public final void resolveAddBadge() {
140: }
141:
142: public final void resolveUpdate() {
143: FlowScene scene = getScene();
144: if (edge != null) {
145: scene.getDecorator(edge).update(edge, scene);
146: if (edge.isDynamicSourcePin()) {
147: FlowPinDescriptor sourcePin = edge
148: .getSourcePinDescriptor();
149: scene.getDecorator(sourcePin).update(sourcePin, scene);
150: }
151: if (edge.isDynamicTargetPin()) {
152: FlowPinDescriptor targetPin = edge
153: .getTargetPinDescriptor();
154: scene.getDecorator(targetPin).update(targetPin, scene);
155: }
156: }
157: }
158:
159: private void createAssignSourcePin(FlowEdgeDescriptor edge) {
160: FlowScene scene = getScene();
161: FlowPinDescriptor pin = edge.getSourcePinDescriptor();
162: if (pin != null) {
163: if (edge.isDynamicSourcePin()) {
164: if (!scene.isObject(pin)) {
165: FlowNodeDescriptor node = getSourceNodeDescriptor(pin);
166: assert node != null;
167: scene.registerUI(pin, resolver);
168: scene.addPin(node, pin);
169: scene.updateBadges(pin);
170: } else {
171: FlowPinDescriptor original = pin;
172: pin = (FlowPinDescriptor) scene
173: .findStoredObject(pin);
174: if (pin == null)
175: Debug.warning("Source pin not found", edge,
176: original); // NOI18N
177: }
178: } else {
179: FlowPinDescriptor original = pin;
180: pin = (FlowPinDescriptor) scene.findStoredObject(pin);
181: if (pin == null)
182: Debug.warning("Source pin not found", edge,
183: original); // NOI18N
184: }
185: }
186: scene.setEdgeSource(edge, pin);
187: }
188:
189: private void createAssignTargetPin(FlowEdgeDescriptor edge) {
190: FlowScene scene = getScene();
191: FlowPinDescriptor pin = edge.getTargetPinDescriptor();
192: if (pin != null) {
193: if (edge.isDynamicTargetPin()) {
194: if (!scene.isObject(pin)) {
195: FlowNodeDescriptor node = getTargetNodeDescriptor(pin);
196: assert node != null;
197: scene.registerUI(pin, resolver);
198: scene.addPin(node, pin);
199: } else {
200: FlowPinDescriptor original = pin;
201: pin = (FlowPinDescriptor) scene
202: .findStoredObject(pin);
203: if (pin == null)
204: Debug.warning("Target pin not found", edge,
205: original); // NOI18N
206: }
207: } else {
208: FlowPinDescriptor original = pin;
209: pin = (FlowPinDescriptor) scene.findStoredObject(pin);
210: if (pin == null)
211: Debug.warning("Target pin not found", edge,
212: original); // NOI18N
213: }
214: }
215: scene.setEdgeTarget(edge, pin);
216: }
217:
218: private void removeDettachSourcePin(FlowEdgeDescriptor edge) {
219: if (!edge.isDynamicSourcePin())
220: return;
221: FlowScene scene = getScene();
222: FlowPinDescriptor pin = scene.getEdgeSource(edge);
223: scene.removePin(pin);
224: scene.unregisterUI(pin, resolver);
225: }
226:
227: private void removeDettachTargetPin(FlowEdgeDescriptor edge) {
228: if (!edge.isDynamicTargetPin())
229: return;
230: FlowScene scene = getScene();
231: FlowPinDescriptor pin = scene.getEdgeTarget(edge);
232: scene.removePin(pin);
233: scene.unregisterUI(pin, resolver);
234: }
235:
236: public final Collection<? extends FlowDescriptor> getFlowDescriptors() {
237: return edge != null ? Collections.singleton(edge) : Collections
238: .<FlowDescriptor> emptySet();
239: }
240:
241: protected abstract FlowNodeDescriptor getSourceNodeDescriptor(
242: FlowPinDescriptor sourcePinDescriptor);
243:
244: protected abstract FlowNodeDescriptor getTargetNodeDescriptor(
245: FlowPinDescriptor targetPinDescriptor);
246:
247: public abstract FlowEdgeDescriptor getEdgeDescriptor();
248:
249: public abstract FlowEdgeDescriptor.EdgeDecorator getDecorator();
250:
251: public abstract FlowEdgeDescriptor.EdgeBehaviour getBehaviour();
252:
253: public abstract FlowPinDescriptor.PinDecorator getDynamicPinDecorator();
254:
255: public abstract FlowPinDescriptor.PinBehaviour getDynamicPinBehaviour();
256:
257: }
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