/*******************************************************************************
* Copyright (c) 2006 Oracle Corporation.
* 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:
* Cameron Bateman/Oracle - initial API and implementation
*
********************************************************************************/
package org.eclipse.jst.jsf.designtime;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.atomic.AtomicBoolean;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.IWorkspaceRunnable;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.QualifiedName;
import org.eclipse.core.runtime.Status;
import org.eclipse.jst.jsf.common.internal.resource.EventResult;
import org.eclipse.jst.jsf.common.internal.resource.IResourceLifecycleListener;
import org.eclipse.jst.jsf.common.internal.resource.LifecycleListener;
import org.eclipse.jst.jsf.common.internal.resource.ResourceLifecycleEvent;
import org.eclipse.jst.jsf.core.JSFVersion;
import org.eclipse.jst.jsf.core.internal.JSFCorePlugin;
import org.eclipse.jst.jsf.core.jsfappconfig.JSFAppConfigUtils;
import org.eclipse.jst.jsf.designtime.context.AbstractDTExternalContextFactory;
import org.eclipse.jst.jsf.designtime.context.DTFacesContext;
import org.eclipse.jst.jsf.designtime.context.IExternalContextFactoryLocator;
import org.eclipse.jst.jsf.designtime.el.AbstractDTMethodResolver;
import org.eclipse.jst.jsf.designtime.el.AbstractDTPropertyResolver;
import org.eclipse.jst.jsf.designtime.el.AbstractDTVariableResolver;
import org.eclipse.jst.jsf.designtime.internal.BasicExtensionFactory.ExtensionData;
import org.eclipse.jst.jsf.designtime.internal.view.AbstractDTViewHandler;
import org.eclipse.jst.jsf.designtime.internal.view.IDTViewHandler;
import org.eclipse.wst.common.project.facet.core.IProjectFacetVersion;
/**
* Per-web-application manager that manages design time information for a
* corresponding project.
*
* TODO: migrate to managed singleton
*
* @author cbateman
*
*/
public final class DesignTimeApplicationManager
{
private static final String SETTINGS_DIR_NAME = ".settings"; //$NON-NLS-1$
private static final String ORG_ECLIPSE_JST_JSF_DESIGNTIME_APPMGR_PREFS = "org.eclipse.jst.jsf.designtime.appmgr.prefs"; //$NON-NLS-1$
private static final String PROPERTY_QUALIFIER = "org.eclipse.jst.jsf.designtime.internal"; //$NON-NLS-1$
private static final String SESSION_PROPERTY_NAME_PROJECT = "DesignTimeApplicationManager"; //$NON-NLS-1$
private static final QualifiedName SESSION_PROPERTY_KEY_PROJECT = new QualifiedName(
PROPERTY_QUALIFIER,
SESSION_PROPERTY_NAME_PROJECT);
private static final String PERSIST_PROPERTY_NAME_EXTERNAL_CONTEXT_PROVIDER = "ExternalContextProvider"; //$NON-NLS-1$
private static final QualifiedName PERSIST_PROPERTY_KEY_EXTERNAL_CONTEXT_PROVIDER = new QualifiedName(
PROPERTY_QUALIFIER,
PERSIST_PROPERTY_NAME_EXTERNAL_CONTEXT_PROVIDER);
private static final String PERSIST_PROPERTY_NAME_VARIABLE_RESOLVER_PROVIDER = "VariableResolverProvider"; //$NON-NLS-1$
private static final QualifiedName PERSIST_PROPERTY_KEY_VARIABLE_RESOLVER_PROVIDER = new QualifiedName(
PROPERTY_QUALIFIER,
PERSIST_PROPERTY_NAME_VARIABLE_RESOLVER_PROVIDER);
private static final String PERSIST_PROPERTY_NAME_PROPERTY_RESOLVER_PROVIDER = "PropertyResolverProvider"; //$NON-NLS-1$
private static final QualifiedName PERSIST_PROPERTY_KEY_PROPERTY_RESOLVER_PROVIDER = new QualifiedName(
PROPERTY_QUALIFIER,
PERSIST_PROPERTY_NAME_PROPERTY_RESOLVER_PROVIDER);
private static final String PERSIST_PROPERTY_NAME_METHOD_RESOLVER_PROVIDER = "MethodResolverProvider"; //$NON-NLS-1$
private static final QualifiedName PERSIST_PROPERTY_KEY_METHOD_RESOLVER_PROVIDER = new QualifiedName(
PROPERTY_QUALIFIER,
PERSIST_PROPERTY_NAME_METHOD_RESOLVER_PROVIDER);
private static final String PERSIST_PROPERTY_NAME_VIEW_HANDLER = "ViewHandler"; //$NON-NLS-1$
private static final String DEFAULT_EXTERNAL_CONTEXT_ID = "org.eclipse.jst.jsf.core.externalcontext.default"; //$NON-NLS-1$
private static final String DEFAULT_VARIABLE_RESOLVER_ID = "org.eclipse.jst.jsf.core.variableresolver.default.decorative"; //$NON-NLS-1$
private static final String DEFAULT_PROPERTY_RESOLVER_ID = "org.eclipse.jst.jsf.core.propertyresolver.default.decorative"; //$NON-NLS-1$
private static final String DEFAULT_METHOD_RESOLVER_ID = "org.eclipse.jst.jsf.core.methodresolver.default"; //$NON-NLS-1$
private static final String PRE_20_DEFAULT_VIEW_HANDLER_ID = "org.eclipse.jst.jsf.designtime.view.jspviewhandler"; //$NON-NLS-1$
private static final String JSF_20_DEFAULT_VIEW_HANDLER_ID = "org.eclipse.jst.jsf.facelet.core.html.viewhandler"; //$NON-NLS-1$
private static final Object GET_INSTANCE_LOCK = new Object();
/**
* @param project
* @return the app manager associated with project
*/
public static DesignTimeApplicationManager getInstance(
final IProject project)
{
if (!hasJSFDesignTime(project))
{
return null;
}
try
{
synchronized (GET_INSTANCE_LOCK)
{
DesignTimeApplicationManager manager = (DesignTimeApplicationManager) project
.getSessionProperty(SESSION_PROPERTY_KEY_PROJECT);
if (manager != null && !project.equals(manager._project))
{
if (!manager._isDisposed.get())
{
manager.dispose();
}
// bug 147729: pretend we starting with a new project (we kind of are)
manager = null;
}
if (manager == null)
{
manager = new DesignTimeApplicationManager(project);
project.setSessionProperty(SESSION_PROPERTY_KEY_PROJECT,
manager);
}
return manager;
}
}
catch (final CoreException ce)
{
Platform
.getLog(JSFCorePlugin.getDefault().getBundle())
.log(
new Status(
IStatus.ERROR,
JSFCorePlugin.getDefault().getBundle()
.getSymbolicName(),
0,
"Problem loading design time appmanager", new Exception(ce))); //$NON-NLS-1$
}
return null;
}
// private void checkAndMaybeUpdateProject(final IProject project)
// {
// boolean needsPropertyStore = false;
//
// synchronized(this)
// {
// if (!project.equals(_project))
// {
// _lifecycleListener.removeResource(_project);
// _project = project;
// _lifecycleListener.addResource(_project);
// _properties.setProject(project);
// needsPropertyStore = true;
// }
// }
//
// if (needsPropertyStore)
// {
// _properties.store();
// }
// }
private synchronized void dispose()
{
if (_isDisposed.compareAndSet(false, true))
{
// dispose viewhandler
removeViewHandler();
_lifecycleListener.dispose();
_facesContexts.clear();
}
}
/**
* <p>
* The criteria for a project having a JSF design time are:
* </p>
*
* <ul>
* <li>project is non-null.</li>
* <li>project is accessible (project.isAccessible() == true)</li>
* <li>project has a JSF facet (this implies that it's dependent facets are
* also present).</li>
* </ul>
*
* @param project
* @return true if project can have a JSF DesignTimeApplicationManager
* associated with it. getInstance(project) uses this determine if
* should construct an instance for a project.
*/
public static boolean hasJSFDesignTime(final IProject project)
{
return project != null && project.isAccessible()
&& JSFAppConfigUtils.isValidJSFProject(project);
}
// instance definition
// _project must be writable in case the manager needs to be retargetted
// after a rename/move etc.
private final IProject _project;
private final IExternalContextFactoryLocator _locator;
private final LifecycleListener _lifecycleListener;
private final AtomicBoolean _isDisposed;
private final ViewHandlerManager _viewHandlerManager;
private final Map<IFile, DTFacesContext> _facesContexts;
private DesignTimeApplicationManager(final IProject project)
{
_project = project;
_locator = new MyExternalContextFactoryLocator();
_isDisposed = new AtomicBoolean();
_lifecycleListener = new LifecycleListener(_project, ResourcesPlugin.getWorkspace());
_lifecycleListener.addListener(new IResourceLifecycleListener()
{
public EventResult acceptEvent(final ResourceLifecycleEvent event)
{
if (event.getAffectedResource() == _project)
{
if (event.getEventType() == ResourceLifecycleEvent.EventType.RESOURCE_INACCESSIBLE
&& event.getReasonType() == ResourceLifecycleEvent.ReasonType.RESOURCE_PROJECT_CLOSED)
{
dispose();
}
}
return EventResult.getDefaultEventResult();
}
});
final PropertyFileManager properties = new PropertyFileManager(_project);
_viewHandlerManager = new ViewHandlerManager(properties);
_facesContexts = new HashMap<IFile, DTFacesContext>();
}
/**
* Method is thread-safe and may block the caller.
*
* @param file
* must not be null
* @return the faces context for the file or null if not found
*/
public DTFacesContext getFacesContext(final IFile file)
{
checkIsDisposed();
if (!hasDTFacesContext(file))
{
return null;
}
synchronized (_facesContexts)
{
DTFacesContext context = _facesContexts.get(file);
if (context == null)
{
context = new DTFacesContext(file, _locator);
context.initialize(_lifecycleListener);
_facesContexts.put(file, context);
}
return context;
}
}
/**
* Method is thread-safe and may block the caller.
*
* Only files for which a runtime request context will be generated have a
* corresponding design time context. This is generally confined to view
* definition files such as JSP's.
*
* General criteria for a file to have a design time faces context are: -
* the file is non-null and isAccessible() - the file has designtime view
* handler (getViewHandler(file) != null) and it supports the content type
* of file.
*
* getFacesContext uses this to decide whether to generate a context for an
* IFile.
*
* @param file
* @return true if file has a design time faces context
*/
public boolean hasDTFacesContext(final IFile file)
{
checkIsDisposed();
final IDTViewHandler viewHandler = getViewHandler();
if (file != null && file.isAccessible() && viewHandler != null
&& viewHandler.supportsViewDefinition(file))
{
return true;
}
return false;
}
/**
* Method is thread-safe and may block the caller.
*
* @return the design time view handler for this webapp (project).
*/
public IDTViewHandler getViewHandler()
{
checkIsDisposed();
/* NOTE: it is critical that view handler calls _NEVER_ take the
DesignTimeApplicationManager lock. let ViewHandlerManager manage it
instead.*/
return _viewHandlerManager.getViewHandler(_project, _lifecycleListener);
}
/**
* Remove and dispose of any currently registered view handler
*/
private void removeViewHandler()
{
/* NOTE: it is critical that view handler calls _NEVER_ take the
DesignTimeApplicationManager lock. let ViewHandlerManager manage it
instead.*/
_viewHandlerManager.removeViewHandler(_project);
}
/**
* Method is thread-safe and may block the caller.
*
* Sets the persistent id on this project that will be used to load the view
* handler.
*
* @param viewHandlerId
*/
public void setViewHandlerId(final String viewHandlerId)
{
checkIsDisposed();
/* NOTE: it is critical that view handler calls _NEVER_ take the
DesignTimeApplicationManager lock. let ViewHandlerManager manage it
instead.*/
_viewHandlerManager.setViewHandlerId(_project, viewHandlerId);
}
/**
* Method is thread-safe and may block the caller.
*
* @param resolverPluginId
* @throws CoreException
*/
public synchronized void setExternalContextProvider(
final String resolverPluginId) throws CoreException
{
checkIsDisposed();
_project.setPersistentProperty(
PERSIST_PROPERTY_KEY_EXTERNAL_CONTEXT_PROVIDER,
resolverPluginId);
}
/**
* Method is thread-safe and may block the caller.
*
* @return the id of the active design time external context provider
*/
public synchronized String getExternalContextProvider()
{
checkIsDisposed();
return getResolverId(PERSIST_PROPERTY_KEY_EXTERNAL_CONTEXT_PROVIDER,
DEFAULT_EXTERNAL_CONTEXT_ID);
}
/**
* Method is thread-safe and may block the caller.
*
* @return the designtime variable resolver for this application
*/
public synchronized AbstractDTVariableResolver getVariableResolver()
{
checkIsDisposed();
ExtensionData<AbstractDTVariableResolver> extData = null;
final String id = getResolverId_OLD(PERSIST_PROPERTY_KEY_VARIABLE_RESOLVER_PROVIDER);
if (id != null)
{
extData = JSFCorePlugin.getVariableResolvers(id);
}
if (extData == null)
{
extData = JSFCorePlugin
.getVariableResolvers(DEFAULT_VARIABLE_RESOLVER_ID);
}
return extData.getInstance(_project);
}
/**
* Method is thread-safe and may block the caller.
*
* Sets the plugin used to determine the designtime variable resolver. To
* reset to the default, pass null.
*
* @param resolverPluginId
* @throws CoreException --
* if the setting the new value fails
*/
public synchronized void setVariableResolverProvider(
final String resolverPluginId) throws CoreException
{
checkIsDisposed();
_project.setPersistentProperty(
PERSIST_PROPERTY_KEY_VARIABLE_RESOLVER_PROVIDER,
resolverPluginId);
}
/**
* Method is thread-safe and may block the caller.
*
* @return the id of the active design time variable resolver
*/
public synchronized String getVariableResolverProvider()
{
checkIsDisposed();
return getResolverId(PERSIST_PROPERTY_KEY_VARIABLE_RESOLVER_PROVIDER,
DEFAULT_VARIABLE_RESOLVER_ID);
}
/**
* Method is thread-safe and may block the caller.
*
* @return the default property resolver that will be used if no other is
* provided. The default property resolver is intended to match the
* similar resolver used by the runtime.
*/
public synchronized AbstractDTPropertyResolver getDefaultPropertyResolver()
{
checkIsDisposed();
return JSFCorePlugin.getPropertyResolver(DEFAULT_PROPERTY_RESOLVER_ID)
.getInstance(_project);
}
/**
* Method is thread-safe and may block the caller.
*
* @return the designtime property resolver for this application
*/
public synchronized AbstractDTPropertyResolver getPropertyResolver()
{
checkIsDisposed();
ExtensionData<AbstractDTPropertyResolver> extData = null;
final String id = getResolverId_OLD(PERSIST_PROPERTY_KEY_PROPERTY_RESOLVER_PROVIDER);
if (id != null)
{
extData = JSFCorePlugin.getPropertyResolver(id);
}
if (extData == null)
{
extData = JSFCorePlugin
.getPropertyResolver(DEFAULT_PROPERTY_RESOLVER_ID);
}
return extData.getInstance(_project);
}
/**
* Method is thread-safe and may block the caller.
*
* @param resolverPluginId
* @throws CoreException --
* if setting the provider fails
*/
public synchronized void setPropertyResolverProvider(
final String resolverPluginId) throws CoreException
{
checkIsDisposed();
_project.setPersistentProperty(
PERSIST_PROPERTY_KEY_PROPERTY_RESOLVER_PROVIDER,
resolverPluginId);
}
/**
* Method is thread-safe and may block the caller.
*
* @return the id of the active design time variable resolver
*/
public synchronized String getPropertyResolverProvider()
{
checkIsDisposed();
return getResolverId(PERSIST_PROPERTY_KEY_PROPERTY_RESOLVER_PROVIDER,
DEFAULT_PROPERTY_RESOLVER_ID);
}
/**
* Method is thread-safe and may block the caller.
*
* @return the designtime method resolver for this application
*/
public synchronized AbstractDTMethodResolver getMethodResolver()
{
checkIsDisposed();
ExtensionData<AbstractDTMethodResolver> extData = null;
final String id = getResolverId_OLD(PERSIST_PROPERTY_KEY_METHOD_RESOLVER_PROVIDER);
if (id != null)
{
extData = JSFCorePlugin.getMethodResolvers(id);
}
if (extData == null)
{
extData = JSFCorePlugin
.getMethodResolvers(DEFAULT_METHOD_RESOLVER_ID);
}
return extData.getInstance(_project);
}
/**
* Method is thread-safe and may block the caller.
*
* @param resolverPluginId
* @throws CoreException --
* if setting the plugin fails
*/
public synchronized void setMethodResolverProvider(
final String resolverPluginId) throws CoreException
{
checkIsDisposed();
_project
.setPersistentProperty(
PERSIST_PROPERTY_KEY_METHOD_RESOLVER_PROVIDER,
resolverPluginId);
}
/**
* Method is thread-safe and may block the caller.
*
* @return the id of the active design time variable resolver
*/
public synchronized String getMethodResolverProvider()
{
checkIsDisposed();
return getResolverId(PERSIST_PROPERTY_KEY_METHOD_RESOLVER_PROVIDER,
DEFAULT_METHOD_RESOLVER_ID);
}
private String getResolverId_OLD(final QualifiedName pluginKey)
{
String pluginId = null;
try
{
pluginId = _project.getPersistentProperty(pluginKey);
}
catch (final CoreException ce)
{
JSFCorePlugin.getDefault().getLog().log(
new Status(IStatus.ERROR, JSFCorePlugin.PLUGIN_ID, 0,
"Error getting plugin property", //$NON-NLS-1$
ce));
pluginId = null;
// fall-through and use the default
}
return pluginId;
}
private String getResolverId(final QualifiedName key,
final String defaultValue)
{
String id = defaultValue;
try
{
final String userId = _project.getPersistentProperty(key);
if (userId != null)
{
id = userId;
}
}
catch (final CoreException ce)
{
// do nothing; fall through and return default
}
return id;
}
private class MyExternalContextFactoryLocator implements
IExternalContextFactoryLocator
{
public AbstractDTExternalContextFactory getFactory()
{
ExtensionData<AbstractDTExternalContextFactory> extData = null;
final String id = getResolverId_OLD(PERSIST_PROPERTY_KEY_EXTERNAL_CONTEXT_PROVIDER);
if (id != null)
{
extData = JSFCorePlugin.getExternalContextProviders(id);
}
if (extData == null)
{
extData = JSFCorePlugin
.getExternalContextProviders(DEFAULT_EXTERNAL_CONTEXT_ID);
}
return extData.getInstance(_project);
}
}
private void checkIsDisposed()
{
// TODO: need to add isDisposed to this and throw an exception
// for now, we just log what's happening to aid debugging
if (_isDisposed.get())
{
JSFCorePlugin
.log(
"A call to a disposed DesignTimeApplicationManager was attempted", //$NON-NLS-1$
new Throwable(
"This exception is only to record a stack trace")); //$NON-NLS-1$
}
}
private static class ViewHandlerManager
{
private final PropertyFileManager _propertyFileManager;
ViewHandlerManager(final PropertyFileManager properties)
{
_propertyFileManager = properties;
}
public synchronized void removeViewHandler(final IProject project)
{
final String viewHandlerId = getHandlerId(project);
if (viewHandlerId != null)
{
final ExtensionData<AbstractDTViewHandler> extData =
JSFCorePlugin.getViewHandlers(viewHandlerId);
if (extData != null)
{
final AbstractDTViewHandler handler = extData.removeInstance(project);
if (handler != null)
{
handler.dispose();
}
}
}
}
protected String getHandlerId(final IProject project)
{
IProjectFacetVersion projectFacet = JSFAppConfigUtils.getProjectFacet(project);
if (projectFacet != null)
{
JSFVersion projectVersion = JSFVersion.valueOfFacetVersion(projectFacet);
String defaultHandler = PRE_20_DEFAULT_VIEW_HANDLER_ID;
// starting with JSF 2.0 a new view handler that first
// processes as Facelet and then delegates to JSP is
// used by default
// TODO: check the web.xml flag that reverts things to 1.2 defaults
if (projectVersion.compareTo(JSFVersion.V2_0) >= 0)
{
defaultHandler = JSF_20_DEFAULT_VIEW_HANDLER_ID;
}
final String viewHandlerId = _propertyFileManager
.getProperty(PERSIST_PROPERTY_NAME_VIEW_HANDLER,
defaultHandler);
return viewHandlerId;
}
return null;
}
public synchronized IDTViewHandler getViewHandler(
final IProject project, final LifecycleListener listener)
{
final String viewHandlerId = getHandlerId(project);
if (viewHandlerId != null)
{
ExtensionData<AbstractDTViewHandler> viewHandlers = JSFCorePlugin
.getViewHandlers(viewHandlerId);
if (viewHandlers == null)
{
viewHandlers = JSFCorePlugin
.getViewHandlers(PRE_20_DEFAULT_VIEW_HANDLER_ID);
}
final AbstractDTViewHandler viewHandler = viewHandlers
.getInstance(project);
viewHandler.setLifecycleListener(listener);
return viewHandler;
}
return null;
}
public void setViewHandlerId(final IProject project,
final String viewHandlerId)
{
// remove any previous handler before the id is lost
removeViewHandler(project);
_propertyFileManager.setProperty(
PERSIST_PROPERTY_NAME_VIEW_HANDLER, viewHandlerId);
}
}
private static class PropertyFileManager
{
private final Properties _properties;
private IProject _project;
PropertyFileManager(final IProject project)
{
_project = project;
_properties = new Properties();
load(_project, _properties);
}
private synchronized IProject getProject()
{
return _project;
}
public void setProperty(final String key, final String value) {
_properties.setProperty(key, value);
store();
}
public String getProperty(final String key, final String defaultValue) {
return _properties.getProperty(key, defaultValue);
}
public void store()
{
final IWorkspaceRunnable storeJob = new IWorkspaceRunnable()
{
public void run(IProgressMonitor monitor) throws CoreException {
IFile propFile;
try {
propFile = getPropsFile(getProject());
if (propFile != null) {
final ByteArrayOutputStream outstream = new ByteArrayOutputStream();
// properties will thread-safe save to the array
// stream
// no further locking is needed since we have
// already have a lock
// on the workspace sub-tree for the settings file
// if this job
// is running.
_properties.store(outstream, null);
propFile.setContents(new ByteArrayInputStream(
outstream.toByteArray()), true, true, null);
}
} catch (final CoreException e) {
JSFCorePlugin.log(e, "Problem storing properties"); //$NON-NLS-1$
} catch (final IOException e) {
JSFCorePlugin.log(e, "Problem storing properties"); //$NON-NLS-1$
}
}
};
final IWorkspace workspace = ResourcesPlugin.getWorkspace();
try
{
// need to lock the project tree, since may need to create
// .settings directory
workspace.run(storeJob, getProject(), IWorkspace.AVOID_UPDATE,
null);
} catch (CoreException ce)
{
JSFCorePlugin.log(ce, "Problem storing properties"); //$NON-NLS-1$
}
}
private static void load(final IProject project,
final Properties properties)
{
try
{
final IFile propFile = getPropsFileHandle(project);
if (propFile != null && propFile.isAccessible())
{
InputStream inStream = null;
try
{
inStream = propFile.getContents();
properties.load(inStream);
}
finally
{
if (inStream != null)
{
inStream.close();
}
}
}
}
catch (final CoreException ce)
{
JSFCorePlugin.log(ce, "Problem loading properties"); //$NON-NLS-1$
}
catch (final IOException ce)
{
JSFCorePlugin.log(ce, "Problem loading properties"); //$NON-NLS-1$
}
}
private static IFile getPropsFile(final IProject project) throws CoreException
{
final IFolder folder = project.getFolder(new Path(SETTINGS_DIR_NAME));
if (!folder.exists())
{
folder.create(false, true, null);
}
final IFile file = folder.getFile(new Path(ORG_ECLIPSE_JST_JSF_DESIGNTIME_APPMGR_PREFS));
if (!file.exists())
{
file.create(new ByteArrayInputStream(new byte[0]), false, null);
}
return file;
}
/**
* @param project
* @return the file handle for the properties file. Doesn't create the
* resource if it doesn't exist
*/
private static IFile getPropsFileHandle(final IProject project)
{
return project.getFile(new Path(SETTINGS_DIR_NAME).append(ORG_ECLIPSE_JST_JSF_DESIGNTIME_APPMGR_PREFS));
}
}
}