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: * The Original Software is NetBeans. The Initial Developer of the Original
026: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
027: * Microsystems, Inc. All Rights Reserved.
028: *
029: * If you wish your version of this file to be governed by only the CDDL
030: * or only the GPL Version 2, indicate your decision by adding
031: * "[Contributor] elects to include this software in this distribution
032: * under the [CDDL or GPL Version 2] license." If you do not indicate a
033: * single choice of license, a recipient has the option to distribute
034: * your version of this file under either the CDDL, the GPL Version 2 or
035: * to extend the choice of license to its licensees as provided above.
036: * However, if you add GPL Version 2 code and therefore, elected the GPL
037: * Version 2 license, then the option applies only if the new code is
038: * made subject to such option by the copyright holder.
039: */
040:
041: package org.netbeans.modules.profiler.attach.providers;
042:
043: import org.openide.filesystems.FileObject;
044: import org.openide.filesystems.FileUtil;
045: import java.io.File;
046: import java.io.FileInputStream;
047: import java.io.FileOutputStream;
048: import java.io.IOException;
049: import java.util.Iterator;
050: import java.util.Properties;
051: import java.util.Set;
052: import org.netbeans.modules.profiler.utilities.queries.SettingsFolderQuery;
053:
054: /**
055: *
056: * @author Jaroslav Bachorik
057: */
058: public abstract class IDESettingsPersistor implements SettingsPersistor {
059: //~ Methods ------------------------------------------------------------------------------------------------------------------
060:
061: public void loadSettings() {
062: Properties settings = loadProperties();
063: parsePersistableSettings(settings);
064: }
065:
066: public void storeSettings() {
067: Properties settings = loadProperties();
068: Properties newSettings = preparePersistableSettings();
069: mergeProperties(newSettings, settings);
070:
071: storeProperties(settings);
072: }
073:
074: protected abstract String getSettingsFileName();
075:
076: protected abstract void parsePersistableSettings(
077: final Properties settings);
078:
079: protected abstract Properties preparePersistableSettings();
080:
081: private File getSettingsFile() {
082: FileObject settingsFO = null;
083:
084: try {
085: settingsFO = SettingsFolderQuery.getDefault()
086: .getSettingsFolder(true);
087: } catch (IOException e) {
088: // IGNORE
089: }
090:
091: File settingsDir = (settingsFO == null) ? null : FileUtil
092: .toFile(settingsFO);
093:
094: return new File(settingsDir, getSettingsFileName());
095: }
096:
097: private Properties loadProperties() {
098: FileInputStream fis = null;
099: Properties settings = new Properties();
100:
101: try {
102: fis = new FileInputStream(getSettingsFile());
103: settings.load(fis);
104: } catch (IOException e) {
105: // IGNORE
106: } finally {
107: try {
108: fis.close();
109: } catch (Exception e) {
110: // IGNORE
111: }
112: }
113:
114: return settings;
115: }
116:
117: private void mergeProperties(final Properties sourceProperties,
118: final Properties destProperties) {
119: Set propKeySet = sourceProperties.keySet();
120:
121: for (Iterator it = propKeySet.iterator(); it.hasNext();) {
122: String key = (String) it.next();
123: String value = sourceProperties.getProperty(key);
124: destProperties.setProperty(key, sourceProperties
125: .getProperty(key));
126: }
127: }
128:
129: private void storeProperties(final Properties properties) {
130: FileOutputStream fos = null;
131:
132: try {
133: fos = new FileOutputStream(getSettingsFile());
134: properties.store(fos, ""); // NOI18N
135: } catch (IOException e) {
136: // IGNORE
137: } finally {
138: try {
139: fos.close();
140: } catch (IOException e) {
141: // IGNORE
142: }
143: }
144: }
145: }
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