Source Code Cross Referenced for DesignEvent.java in  » IDE-Netbeans » vmd.analyzer » org » netbeans » modules » vmd » api » model » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE Netbeans » vmd.analyzer » org.netbeans.modules.vmd.api.model 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


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.model;
042:
043:        import java.util.Set;
044:        import java.util.HashMap;
045:
046:        /**
047:         * The class represents a document change event. There is an only one event type for document changes. The class tracks
048:         * all types of changes. Types of changes are: Any change of a property value, components hierarchy, or selection.
049:         * <p>
050:         * The event also contains all values of property values. These old values are one that were store at the begining of the transaction.
051:         * When a property is overriden many times, only the newest value is stored in the document and the oldest value is stored
052:         * in the event.
053:         * <p>
054:         * When a component hierarchy is changed, the event remembers which components were affected during the transaction.
055:         * The newest hierarchy is stored in the document. There is no way how to resolve state before the transaction. Also
056:         * when a component is removed from and then added back to structure, so hierarchy is the same as before, an event is fired
057:         * anyway and the component and its parent are marked as hierarchy-modified.
058:         * <p>
059:         * When a component is created, the event remembers all those components that were created during the transaction.
060:         *
061:         * @author David Kaspar
062:         */
063:        public final class DesignEvent {
064:
065:            private final long eventID;
066:
067:            private final Set<DesignComponent> fullyComponents;
068:            private final Set<DesignComponent> partlyComponents;
069:
070:            private final Set<DesignComponent> fullyHierarchies;
071:            private final Set<DesignComponent> partlyHierarchies;
072:
073:            private Set<DesignComponent> descriptorChangedComponents;
074:
075:            private Set<DesignComponent> createdComponents;
076:
077:            // NOTE - do not expose this
078:            private HashMap<DesignComponent, HashMap<String, PropertyValue>> oldPropertyValues;
079:
080:            private boolean selectionChanged;
081:
082:            private boolean structureChanged;
083:
084:            DesignEvent(
085:                    long eventID,
086:                    Set<DesignComponent> fullyComponents,
087:                    Set<DesignComponent> partlyComponents,
088:                    Set<DesignComponent> fullyHierarchies,
089:                    Set<DesignComponent> partlyHierarchies,
090:                    Set<DesignComponent> descriptorChangedComponents,
091:                    Set<DesignComponent> createdComponents,
092:                    HashMap<DesignComponent, HashMap<String, PropertyValue>> oldPropertyValues,
093:                    boolean selectionChanged) {
094:                this .eventID = eventID;
095:                this .fullyComponents = fullyComponents;
096:                this .partlyComponents = partlyComponents;
097:                this .fullyHierarchies = fullyHierarchies;
098:                this .partlyHierarchies = partlyHierarchies;
099:                this .descriptorChangedComponents = descriptorChangedComponents;
100:                this .createdComponents = createdComponents;
101:                this .oldPropertyValues = oldPropertyValues;
102:                this .selectionChanged = selectionChanged;
103:
104:                this .structureChanged = !(fullyComponents.isEmpty()
105:                        && partlyComponents.isEmpty()
106:                        && fullyHierarchies.isEmpty()
107:                        && partlyHierarchies.isEmpty()
108:                        && descriptorChangedComponents.isEmpty()
109:                        && createdComponents.isEmpty() && oldPropertyValues
110:                        .isEmpty());
111:            }
112:
113:            /**
114:             * Returns an event id. The id is increasing non-negative number.
115:             * @return the event id
116:             */
117:            public long getEventID() {
118:                return eventID;
119:            }
120:
121:            /**
122:             * Returns a set of all components that have at least one property changed during a transaction.
123:             * @return the set of fully property-affected components
124:             */
125:            public Set<DesignComponent> getFullyAffectedComponents() {
126:                return fullyComponents;
127:            }
128:
129:            /**
130:             * Returns a set of all components that have changed their placement in components-hierarchy during a transaction.
131:             * <p>
132:             * An affected component is the one that is added to or removed from a parent component. The parent component is
133:             * an affected component too.
134:             * @return the set of fully hierarchy-affected components
135:             */
136:            public Set<DesignComponent> getFullyAffectedHierarchies() {
137:                return fullyHierarchies;
138:            }
139:
140:            /**
141:             * Returns a set of all components where they or one of their sub-components have at least one property changed during a transaction.
142:             * @return the set of partly property-affected components
143:             */
144:            public Set<DesignComponent> getPartlyAffectedComponents() {
145:                return partlyComponents;
146:            }
147:
148:            /**
149:             * Returns a set of all components where they or one of their sub-components have changed their placement
150:             * in components-hierarchy during a transaction.
151:             * <p>
152:             * An affected component is the one that is added to or removed from a parent component. The parent component is
153:             * an affected component too.
154:             * @return the set of partly hierarchy-affected components
155:             */
156:            public Set<DesignComponent> getPartlyAffectedHierarchies() {
157:                return partlyHierarchies;
158:            }
159:
160:            /**
161:             * Returns a set of all components whose component descriptor is changed during a transaction because of component-descriptor-registry update.
162:             * @return the set of components with changed descriptor
163:             */
164:            public Set<DesignComponent> getDescriptorChangedComponents() {
165:                return descriptorChangedComponents;
166:            }
167:
168:            /**
169:             * Returns a set of all components that were created during a transaction.
170:             * @return the set of created components
171:             */
172:            public Set<DesignComponent> getCreatedComponents() {
173:                return createdComponents;
174:            }
175:
176:            /**
177:             * Returns an old value of a property of a component.
178:             * @param component the component
179:             * @param propertyName the property name
180:             * @return the old value, null if a property is not changed
181:             */
182:            public PropertyValue getOldPropertyValue(DesignComponent component,
183:                    String propertyName) {
184:                HashMap<String, PropertyValue> properties = oldPropertyValues
185:                        .get(component);
186:                if (properties == null)
187:                    return null;
188:                return properties.get(propertyName);
189:            }
190:
191:            /**
192:             * Returns whether a property of a component is changed.
193:             * @param component the component
194:             * @param propertyName the property name
195:             * @return true, if a property is changed
196:             */
197:            public boolean isComponentPropertyChanged(
198:                    DesignComponent component, String propertyName) {
199:                HashMap<String, PropertyValue> properties = oldPropertyValues
200:                        .get(component);
201:                return properties != null
202:                        && properties.containsKey(propertyName);
203:            }
204:
205:            /**
206:             * Returns whether a selection is changed. The actual selection is store in a document.
207:             * @return true if changed.
208:             */
209:            public boolean isSelectionChanged() {
210:                return selectionChanged;
211:            }
212:
213:            /**
214:             * Returns whether a document structure is changed. It means a property, hierarchy, or a descriptor is changed.
215:             * @return true if a structure is changed
216:             */
217:            public boolean isStructureChanged() {
218:                return structureChanged;
219:            }
220:
221:        }
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