/*******************************************************************************
* Copyright (c) 2000, 2012 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* EclipseSource - adaptation for RAP
*******************************************************************************/
package org.eclipse.ui.internal;
//import java.io.BufferedReader;
//import java.io.File;
import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.rap.rwt.RWT;
import org.eclipse.rap.rwt.service.SettingStore;
import org.eclipse.ui.IMemento;
import org.eclipse.ui.IWorkingSet;
import org.eclipse.ui.IWorkingSetManager;
import org.eclipse.ui.WorkbenchException;
import org.eclipse.ui.XMLMemento;
import org.eclipse.ui.statushandlers.IStatusAdapterConstants;
import org.eclipse.ui.statushandlers.StatusAdapter;
import org.eclipse.ui.statushandlers.StatusManager;
import org.osgi.framework.BundleContext;
import org.osgi.framework.BundleListener;
/**
* A working set manager stores working sets and provides property change
* notification when a working set is added or removed. Working sets are
* persisted whenever one is added or removed.
*
* @see IWorkingSetManager
*/
public class WorkingSetManager extends AbstractWorkingSetManager implements
IWorkingSetManager, BundleListener {
// Working set persistence
public static final String WORKING_SET_STATE_FILENAME = "workingsets.xml"; //$NON-NLS-1$
// RAP [rh]: key for storing state into setting store
private static final String KEY_WORKING_SET_MANAGER_STATE
= WorkingSetManager.class.getName() + "#XMLMemento";
public WorkingSetManager(BundleContext context) {
super(context);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.ui.IWorkingSetManager
*/
public void addRecentWorkingSet(IWorkingSet workingSet) {
internalAddRecentWorkingSet(workingSet);
saveState();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.ui.IWorkingSetManager
*/
public void addWorkingSet(IWorkingSet workingSet) {
super.addWorkingSet(workingSet);
saveState();
}
// RAP [rh] unused code
// /**
// * Returns the file used as the persistence store, or <code>null</code> if
// * there is no available file.
// *
// * @return the file used as the persistence store, or <code>null</code>
// */
// private File getWorkingSetStateFile() {
// IPath path = WorkbenchPlugin.getDefault().getDataLocation();
// if (path == null) {
// return null;
// }
// path = path.append(WORKING_SET_STATE_FILENAME);
// return path.toFile();
// }
/*
* (non-Javadoc)
*
* @see org.eclipse.ui.IWorkingSetManager
*/
public void removeWorkingSet(IWorkingSet workingSet) {
if (internalRemoveWorkingSet(workingSet)) {
saveState();
}
}
/**
* Reads the persistence store and creates the working sets stored in it.
*/
public void restoreState() {
// RAP [rh] reading from state-location does not work with multiple sessions
// File stateFile = getWorkingSetStateFile();
SettingStore settingStore = RWT.getSettingStore();
String state = settingStore.getAttribute( KEY_WORKING_SET_MANAGER_STATE );
// if (stateFile != null && stateFile.exists()) {
if( state != null ) {
try {
// RAP [rh] replaced InputStream/Reader with Reader that reads from SettingStore attribute
// FileInputStream input = new FileInputStream(stateFile);
// BufferedReader reader = new BufferedReader(
// new InputStreamReader(input, "utf-8")); //$NON-NLS-1$
StringReader reader = new StringReader( state );
IMemento memento = XMLMemento.createReadRoot(reader);
restoreWorkingSetState(memento);
restoreMruList(memento);
reader.close();
// RAP [rh] unreachable catch-block, since no IOException is thrown
// } catch (IOException e) {
// handleInternalError(
// e,
// WorkbenchMessages.get().ProblemRestoringWorkingSetState_title,
// WorkbenchMessages.get().ProblemRestoringWorkingSetState_message);
} catch (WorkbenchException e) {
handleInternalError(
e,
WorkbenchMessages.get().ProblemRestoringWorkingSetState_title,
WorkbenchMessages.get().ProblemRestoringWorkingSetState_message);
}
}
}
/**
* Saves the working sets in the persistence store
*/
private void saveState() {
// RAP [rh] cannot save state to state-location in multi-session environment
// File stateFile = getWorkingSetStateFile();
// if (stateFile == null) {
// return;
// }
// try {
// saveState(stateFile);
// } catch (IOException e) {
// stateFile.delete();
// MessageDialog.openError((Shell) null,
// WorkbenchMessages.get().ProblemSavingWorkingSetState_title,
// WorkbenchMessages.get().ProblemSavingWorkingSetState_message);
// }
// RAP [rh] copied from AbstractWorkingSetManager#saveState(File)
XMLMemento memento = XMLMemento.createWriteRoot(IWorkbenchConstants.TAG_WORKING_SET_MANAGER);
saveWorkingSetState(memento);
saveMruList(memento);
// RAP [rh] store state in SettingStore instead
try {
StringWriter writer = new StringWriter();
memento.save( writer );
writer.close();
SettingStore settingStore = RWT.getSettingStore();
settingStore.setAttribute( KEY_WORKING_SET_MANAGER_STATE, writer.toString() );
} catch ( IOException ioe ) {
WorkbenchPlugin.log( WorkbenchMessages.get().ProblemSavingWorkingSetState_title, ioe );
}
}
/**
* Persists all working sets and fires a property change event for the
* changed working set. Should only be called by
* org.eclipse.ui.internal.WorkingSet.
*
* @param changedWorkingSet
* the working set that has changed
* @param propertyChangeId
* the changed property. one of CHANGE_WORKING_SET_CONTENT_CHANGE
* and CHANGE_WORKING_SET_NAME_CHANGE
*/
public void workingSetChanged(IWorkingSet changedWorkingSet,
String propertyChangeId, Object oldValue) {
saveState();
super.workingSetChanged(changedWorkingSet, propertyChangeId, oldValue);
}
/**
* Show and Log the exception using StatusManager.
*/
private void handleInternalError(Exception exp, String title, String message) {
Status status = new Status(IStatus.ERROR, WorkbenchPlugin.PI_WORKBENCH,
message, exp);
StatusAdapter sa = new StatusAdapter(status);
sa.setProperty(IStatusAdapterConstants.TITLE_PROPERTY, title);
StatusManager.getManager().handle(sa,
StatusManager.SHOW | StatusManager.LOG);
}
}