package org.xmind.cathy.internal;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.HashMap;
import java.util.Properties;
import org.eclipse.core.runtime.FileLocator;
import org.eclipse.core.runtime.Platform;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.preference.FieldEditorPreferencePage;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.ListViewer;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;
import org.eclipse.ui.PlatformUI;
public class LanguagePrefPage extends FieldEditorPreferencePage implements
IWorkbenchPreferencePage {
private static final String LANGUAGE_OSGI_NL_KEY = "osgi.nl"; //$NON-NLS-1$
private static final String LOADED_LANGUAGES_URL = "platform:/plugin/org.xmind.cathy/resource/langs.properties"; //$NON-NLS-1$
@SuppressWarnings("nls")
private static final String[] supportedLangsKey = { "en_US", "de", "fr",
"zh_CN", "zh_TW", "ja", "ko", "da", "ru", "it", "sl", "ar", "es",
"pt_BR" };
private class LanguageLabelProvider extends LabelProvider {
@Override
public String getText(Object element) {
if (element instanceof String) {
StringBuffer buffer = new StringBuffer(3);
String langKey = (String) element;
String supportLang = supportLanguageProperties
.getProperty(langKey);
buffer.append(supportLang);
buffer.append(" - "); //$NON-NLS-1$
buffer.append(supportLangsMap.get(langKey));
return buffer.toString();
}
return super.getText(element);
}
}
private static String oldLangKey = null;
private Properties configIniProperties;
private Properties supportLanguageProperties;
private HashMap<String, String> supportLangsMap;
private ListViewer langsViewer;
private Label changingToLangText;
private Button changeButton;
public LanguagePrefPage() {
super(WorkbenchMessages.LanguagePrefPage_title, FLAT);
configIniProperties = loadProperties(getConfigFile());
supportLanguageProperties = loadProperties(getSupportLanguageFile());
initSupportLanguageMap();
if (oldLangKey == null) {
String languageKey = configIniProperties
.getProperty(LANGUAGE_OSGI_NL_KEY);
oldLangKey = languageKey != null ? languageKey : System
.getProperty(LANGUAGE_OSGI_NL_KEY);
}
}
private void initSupportLanguageMap() {
if (supportLangsMap != null)
return;
supportLangsMap = new HashMap<String, String>();
supportLangsMap.put(
"en_US", WorkbenchMessages.SupportLanguageName_English); //$NON-NLS-1$
supportLangsMap.put("ar", WorkbenchMessages.SupportLanguageName_Arabic); //$NON-NLS-1$
supportLangsMap.put("da", WorkbenchMessages.SupportLanguageName_Danish); //$NON-NLS-1$
supportLangsMap.put("de", WorkbenchMessages.SupportLanguageName_German); //$NON-NLS-1$
supportLangsMap.put(
"es", WorkbenchMessages.SupportLanguageName_Spanish); //$NON-NLS-1$
supportLangsMap.put("fr", WorkbenchMessages.SupportLanguageName_French); //$NON-NLS-1$
supportLangsMap
.put("it", WorkbenchMessages.SupportLanguageName_Italian); //$NON-NLS-1$
supportLangsMap.put(
"ja", WorkbenchMessages.SupportLanguageName_Japanese); //$NON-NLS-1$
supportLangsMap.put("ko", WorkbenchMessages.SupportLanguageName_Korean); //$NON-NLS-1$
supportLangsMap
.put("pt_BR", WorkbenchMessages.SupportLanguageName_Portuguese_Brazilian); //$NON-NLS-1$
supportLangsMap
.put("ru", WorkbenchMessages.SupportLanguageName_Russian); //$NON-NLS-1$
supportLangsMap.put(
"sl", WorkbenchMessages.SupportLanguageName_Slovenian); //$NON-NLS-1$
supportLangsMap.put(
"zh_CN", WorkbenchMessages.SupportLanguageName_SimplifiedCN); //$NON-NLS-1$
supportLangsMap.put(
"zh_TW", WorkbenchMessages.SupportLanguageName_TraditionalCN); //$NON-NLS-1$
}
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 void storeProperties(Properties properties, File file) {
if (file != null && file.exists() && file.canWrite()) {
try {
OutputStream stream = new BufferedOutputStream(
new FileOutputStream(file), 1024);
try {
properties.store(stream, "Store properties into file."); //$NON-NLS-1$
} finally {
try {
stream.close();
} catch (IOException e) {
}
}
} catch (IOException e) {
}
}
}
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;
}
private File getSupportLanguageFile() {
try {
URL url = FileLocator.find(new URL(LOADED_LANGUAGES_URL));
File supportLanguageFile = new File(FileLocator.toFileURL(url)
.getPath());
return supportLanguageFile;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
public void init(IWorkbench workbench) {
}
@Override
protected void createFieldEditors() {
addLanguageGroup();
}
private void addLanguageGroup() {
Composite parent = getFieldEditorParent();
GridLayout gridLayout = new GridLayout(1, false);
gridLayout.marginWidth = 0;
gridLayout.marginHeight = 0;
gridLayout.verticalSpacing = 0;
gridLayout.horizontalSpacing = 0;
parent.setLayout(gridLayout);
addChangeLanguageField(parent);
}
private void addChangeLanguageField(Composite parent) {
Composite composite = new Composite(parent, SWT.NONE);
composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
composite.setLayout(new GridLayout());
createLangsDescription(composite);
createChangeLanguageControl(parent);
}
private void createChangeLanguageControl(Composite parent) {
Composite line = new Composite(parent, SWT.NONE);
line.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false));
line.setLayout(new GridLayout(2, false));
int flags = SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL | SWT.SINGLE;
langsViewer = new ListViewer(line, flags);
GridData layoutData = new GridData(SWT.FILL, SWT.BEGINNING, true, false);
langsViewer.getControl().setLayoutData(layoutData);
langsViewer.setContentProvider(new ArrayContentProvider());
langsViewer.setLabelProvider(new LanguageLabelProvider());
langsViewer.setInput(supportedLangsKey);
String languageKey = configIniProperties
.getProperty(LANGUAGE_OSGI_NL_KEY);
String currentLanguageKey = languageKey != null ? languageKey
: oldLangKey;
langsViewer.setSelection(new StructuredSelection(currentLanguageKey));
langsViewer
.addSelectionChangedListener(new ISelectionChangedListener() {
public void selectionChanged(SelectionChangedEvent event) {
ISelection langElementSelection = event.getSelection();
if (langElementSelection instanceof StructuredSelection) {
Object langKey = ((StructuredSelection) langElementSelection)
.getFirstElement();
boolean isChanged = !oldLangKey.equals(langKey);
if (isChanged) {
String langSelected = ((LanguageLabelProvider) langsViewer
.getLabelProvider()).getText(langKey);
changingToLangText.setText(langSelected);
} else {
changingToLangText.setText(""); //$NON-NLS-1$
}
changeButton.setEnabled(isChanged);
}
}
});
changeButton = new Button(line, SWT.NONE);
changeButton.setText(WorkbenchMessages.ChangeLanguage_button);
changeButton.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false,
false));
changeButton.setEnabled(!currentLanguageKey.equals(oldLangKey));
changeButton.addSelectionListener(new SelectionListener() {
public void widgetSelected(SelectionEvent e) {
ISelection langElementSelection = langsViewer.getSelection();
if (langElementSelection instanceof StructuredSelection) {
Object langKey = ((StructuredSelection) langElementSelection)
.getFirstElement();
String langSelected = ((LanguageLabelProvider) langsViewer
.getLabelProvider()).getText(langKey);
String message = NLS.bind(
WorkbenchMessages.ConfirmToRestart_description,
langSelected);
MessageDialog confirmDialog = new MessageDialog(
getShell(),
WorkbenchMessages.ConfirmToRestart_title,
null,
message,
MessageDialog.CONFIRM,
new String[] {
WorkbenchMessages.ConfirmToRestart_defaultButton,
WorkbenchMessages.ConfirmToRestart_cancelButton },
IDialogConstants.OK_ID);
int restart = confirmDialog.open();
configIniProperties.put(LANGUAGE_OSGI_NL_KEY, langKey);
storeProperties(configIniProperties, getConfigFile());
if (restart == 0) {
PlatformUI.getWorkbench().restart();
}
}
}
public void widgetDefaultSelected(SelectionEvent e) {
widgetSelected(e);
}
});
}
private void createLangsDescription(Composite composite) {
Composite descriptionComposite = new Composite(composite, SWT.NONE);
descriptionComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL,
true, false));
GridLayout descriptionLayout = new GridLayout(2, false);
descriptionLayout.marginHeight = 0;
descriptionLayout.marginWidth = 0;
descriptionComposite.setLayout(descriptionLayout);
Label langToChangeDescription = new Label(descriptionComposite,
SWT.NONE);
langToChangeDescription
.setText(WorkbenchMessages.ChangeLanguageTo_description);
langToChangeDescription.setLayoutData(new GridData(SWT.FILL));
changingToLangText = new Label(descriptionComposite, SWT.READ_ONLY
| SWT.SINGLE | SWT.BORDER | SWT.SHADOW_IN | SWT.LEFT);
changingToLangText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER,
true, true));
String languageKey = configIniProperties
.getProperty(LANGUAGE_OSGI_NL_KEY);
String supportLang = supportLangsMap.get(languageKey);
if (supportLang != null)
changingToLangText.setText(supportLang);
}
@Override
protected void performDefaults() {
configIniProperties.put(LANGUAGE_OSGI_NL_KEY,
System.getProperty(LANGUAGE_OSGI_NL_KEY));
langsViewer.setSelection(
new StructuredSelection(System
.getProperty(LANGUAGE_OSGI_NL_KEY)), true);
storeProperties(configIniProperties, getConfigFile());
super.performDefaults();
}
@Override
public boolean performOk() {
if (!super.performOk())
return false;
ISelection langElementSelection = langsViewer.getSelection();
if (langElementSelection instanceof StructuredSelection) {
Object langKey = ((StructuredSelection) langElementSelection)
.getFirstElement();
if (!oldLangKey.equals(langKey)) {
String message = WorkbenchMessages.LanguagePrefPage_ConfirmToRestart2_description;
MessageDialog confirmDialog = new MessageDialog(
getShell(),
WorkbenchMessages.ConfirmToRestart_title,
null,
message,
MessageDialog.CONFIRM,
new String[] {
WorkbenchMessages.LanguagePrefPage_ConfirmToRestart2_defaultButton,
WorkbenchMessages.LanguagePrefPage_ConfirmToRestart_laterButton },
IDialogConstants.OK_ID);
int restart = confirmDialog.open();
if (restart == -1)
return false;
configIniProperties.put(LANGUAGE_OSGI_NL_KEY, langKey);
storeProperties(configIniProperties, getConfigFile());
if (restart == IDialogConstants.OK_ID) {
PlatformUI.getWorkbench().restart();
}
}
}
return true;
}
}
