Source Code Cross Referenced for ResourceFactory.java in  » IDE-Eclipse » ui-ide » org » eclipse » ui » internal » ide » model » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE Eclipse » ui ide » org.eclipse.ui.internal.ide.model 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*******************************************************************************
002:         * Copyright (c) 2000, 2006 IBM Corporation and others.
003:         * All rights reserved. This program and the accompanying materials
004:         * are made available under the terms of the Eclipse Public License v1.0
005:         * which accompanies this distribution, and is available at
006:         * http://www.eclipse.org/legal/epl-v10.html
007:         *
008:         * Contributors:
009:         *     IBM Corporation - initial API and implementation
010:         *******************************************************************************/package org.eclipse.ui.internal.ide.model;
011:
012:        import org.eclipse.core.resources.IResource;
013:        import org.eclipse.core.resources.IWorkspaceRoot;
014:        import org.eclipse.core.resources.ResourcesPlugin;
015:        import org.eclipse.core.runtime.IAdaptable;
016:        import org.eclipse.core.runtime.Path;
017:        import org.eclipse.ui.IElementFactory;
018:        import org.eclipse.ui.IMemento;
019:        import org.eclipse.ui.IPersistableElement;
020:
021:        /**
022:         * The ResourceFactory is used to save and recreate an IResource object.
023:         * As such, it implements the IPersistableElement interface for storage
024:         * and the IElementFactory interface for recreation.
025:         *
026:         * @see IMemento
027:         * @see IPersistableElement
028:         * @see IElementFactory
029:         */
030:        public class ResourceFactory implements  IElementFactory,
031:                IPersistableElement {
032:
033:            // These persistence constants are stored in XML.  Do not
034:            // change them.
035:            private static final String TAG_PATH = "path";//$NON-NLS-1$
036:
037:            private static final String TAG_TYPE = "type";//$NON-NLS-1$
038:
039:            private static final String FACTORY_ID = "org.eclipse.ui.internal.model.ResourceFactory";//$NON-NLS-1$
040:
041:            // IPersistable data.
042:            private IResource res;
043:
044:            /**
045:             * Create a ResourceFactory.  This constructor is typically used
046:             * for our IElementFactory side.
047:             */
048:            public ResourceFactory() {
049:            }
050:
051:            /**
052:             * Create a ResourceFactory.  This constructor is typically used
053:             * for our IPersistableElement side.
054:             */
055:            public ResourceFactory(IResource input) {
056:                res = input;
057:            }
058:
059:            /**
060:             * @see IElementFactory
061:             */
062:            public IAdaptable createElement(IMemento memento) {
063:                // Get the file name.
064:                String fileName = memento.getString(TAG_PATH);
065:                if (fileName == null) {
066:                    return null;
067:                }
068:
069:                IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
070:                String type = memento.getString(TAG_TYPE);
071:                if (type == null) {
072:                    // Old format memento. Create an IResource using findMember. 
073:                    // Will return null for resources in closed projects.
074:                    res = root.findMember(new Path(fileName));
075:                } else {
076:                    int resourceType = Integer.parseInt(type);
077:
078:                    if (resourceType == IResource.ROOT) {
079:                        res = root;
080:                    } else if (resourceType == IResource.PROJECT) {
081:                        res = root.getProject(fileName);
082:                    } else if (resourceType == IResource.FOLDER) {
083:                        res = root.getFolder(new Path(fileName));
084:                    } else if (resourceType == IResource.FILE) {
085:                        res = root.getFile(new Path(fileName));
086:                    }
087:                }
088:                return res;
089:            }
090:
091:            /**
092:             * @see IPersistableElement
093:             */
094:            public String getFactoryId() {
095:                return FACTORY_ID;
096:            }
097:
098:            /**
099:             * @see IPersistableElement
100:             */
101:            public void saveState(IMemento memento) {
102:                memento.putString(TAG_PATH, res.getFullPath().toString());
103:                memento.putString(TAG_TYPE, Integer.toString(res.getType()));
104:            }
105:        }
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