/* ******************************************************************************
* Copyright (c) 2006-2012 XMind Ltd. and others.
*
* This file is a part of XMind 3. XMind releases 3 and
* above are dual-licensed under the Eclipse Public License (EPL),
* which is available at http://www.eclipse.org/legal/epl-v10.html
* and the GNU Lesser General Public License (LGPL),
* which is available at http://www.gnu.org/licenses/lgpl.html
* See http://www.xmind.net/license.html for details.
*
* Contributors:
* XMind Ltd. - initial API and implementation
*******************************************************************************/
package org.xmind.ui.internal;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.eclipse.ui.internal.registry.RegistryReader;
import org.xmind.ui.mindmap.INumberFormat;
import org.xmind.ui.mindmap.INumberFormatDescriptor;
import org.xmind.ui.mindmap.INumberFormatManager;
import org.xmind.ui.mindmap.MindMapUI;
import org.xmind.ui.util.Logger;
public class NumberFormatExtensionManager extends RegistryReader
implements INumberFormatManager {
private static class NumberFormatProxy
implements INumberFormat, INumberFormatDescriptor {
private IConfigurationElement element;
private String id;
private String name;
private String description;
private INumberFormat implementation;
private boolean failedInitImplementation = false;
public NumberFormatProxy(IConfigurationElement element)
throws CoreException {
this.element = element;
this.id = element.getAttribute(RegistryConstants.ATT_ID);
this.name = element.getAttribute(RegistryConstants.ATT_NAME);
this.description = element
.getAttribute(RegistryConstants.ATT_DESCRIPTION);
if (getClassValue(element, RegistryConstants.ATT_CLASS) == null)
throw new CoreException(new Status(IStatus.ERROR,
element.getNamespaceIdentifier(), 0,
"Invalid extension (missing class name): " + id, //$NON-NLS-1$
null));
}
private INumberFormat getImplementation() {
if (implementation == null && !failedInitImplementation) {
try {
implementation = (INumberFormat) element
.createExecutableExtension(
RegistryConstants.ATT_CLASS);
} catch (CoreException e) {
Logger.log(e,
"Failed to create number format from class: " //$NON-NLS-1$
+ getClassValue(element,
RegistryConstants.ATT_CLASS));
failedInitImplementation = true;
}
}
return implementation;
}
public String getText(int index) {
INumberFormat impl = getImplementation();
if (impl != null)
return impl.getText(index);
return null;
}
public String getId() {
return id;
}
public String getName() {
return name;
}
public String getDescription() {
return description;
}
}
private static final String LANGUAGE_OSGI_NL_KEY = "osgi.nl"; //$NON-NLS-1$
private static final String SIMPLECHINESEFORMAT = "org.xmind.numbering.simplechinese"; //$NON-NLS-1$
private static final String TRADITIONALCHINESEFORMAT = "org.xmind.numbering.traditionalchinese"; //$NON-NLS-1$
private Map<String, NumberFormatProxy> formats = null;
private List<INumberFormatDescriptor> list = null;
private Properties configIniProperties;
/* package */ NumberFormatExtensionManager() {
}
protected boolean readElement(IConfigurationElement element) {
String name = element.getName();
if (RegistryConstants.TAG_FORMAT.equals(name)) {
readFormat(element);
return true;
}
return false;
}
private void readFormat(IConfigurationElement element) {
NumberFormatProxy proxy;
try {
proxy = new NumberFormatProxy(element);
} catch (CoreException e) {
Logger.log(e, "Failed to load numbering format: " + element); //$NON-NLS-1$
return;
}
String id = proxy.getId();
if (configIniProperties == null)
configIniProperties = loadProperties(getConfigFile());
/// "zh_CN", "zh_TW"
if (SIMPLECHINESEFORMAT.equals(id) && !"zh_CN" //$NON-NLS-1$
.equals(configIniProperties.getProperty(LANGUAGE_OSGI_NL_KEY)))
return;
if (TRADITIONALCHINESEFORMAT.equals(id) && !"zh_TW" //$NON-NLS-1$
.equals(configIniProperties.getProperty(LANGUAGE_OSGI_NL_KEY)))
return;
if (formats == null)
formats = new HashMap<String, NumberFormatProxy>();
formats.put(proxy.getId(), proxy);
if (list == null)
list = new ArrayList<INumberFormatDescriptor>();
list.add(proxy);
}
private void ensureLoaded() {
if (formats != null && list != null)
return;
lazyLoad();
if (formats == null)
formats = Collections.emptyMap();
if (list == null)
list = Collections.emptyList();
}
private void lazyLoad() {
readRegistry(Platform.getExtensionRegistry(), MindMapUI.PLUGIN_ID,
RegistryConstants.EXT_NUMBER_FORMATS);
}
public INumberFormatDescriptor getDescriptor(String formatId) {
ensureLoaded();
return formats.get(formatId);
}
public List<INumberFormatDescriptor> getDescriptors() {
ensureLoaded();
return list;
}
public INumberFormat getFormat(String formatId) {
ensureLoaded();
return formats.get(formatId);
}
public String getNumberText(String formatId, int index) {
INumberFormat format = getFormat(formatId);
if (format != null)
return format.getText(index);
return null;
}
private Properties loadProperties(File file) {
if (file != null && file.exists() && file.canRead()) {
try {
InputStream stream = new BufferedInputStream(
new FileInputStream(file), 1024);
try {
Properties properties = new Properties();
properties.load(stream);
return properties;
} finally {
try {
stream.close();
} catch (IOException e) {
}
}
} catch (IOException e) {
}
}
return null;
}
private File getConfigFile() {
URL configDir = Platform.getConfigurationLocation().getURL();
try {
URL configIni = new URL(configDir, "config.ini"); //$NON-NLS-1$
File file = new File(configIni.getFile());
return file;
} catch (MalformedURLException e) {
e.printStackTrace();
}
return null;
}
}
