/*******************************************************************************
* Copyright (c) 2001, 2008 Oracle 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:
* Oracle Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.jsf.designtime.internal.view.model.jsp.registry;
import java.util.Collection;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.ISaveContext;
import org.eclipse.core.resources.ISaveParticipant;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jst.jsf.common.internal.resource.ResourceSingletonObjectManager;
import org.eclipse.jst.jsf.core.internal.JSFCorePlugin;
import org.eclipse.jst.jsf.core.internal.JSFCoreTraceOptions;
import org.eclipse.jst.jsf.designtime.internal.Messages;
import org.eclipse.jst.jsf.designtime.internal.view.model.ITagRegistry;
import org.eclipse.jst.jsf.designtime.internal.view.model.TagRegistryFactory;
import org.eclipse.wst.common.project.facet.core.IFacetedProject;
import org.eclipse.wst.common.project.facet.core.IProjectFacet;
import org.eclipse.wst.common.project.facet.core.ProjectFacetsManager;
/**
* A per-resource singleton manager for TLDTagRegistry's.
*
* @author cbateman
*
*/
public final class TLDRegistryManager extends
ResourceSingletonObjectManager<TLDTagRegistry, IProject>
{
// STATIC
private final static String JST_WEB_MODULE = "jst.web"; //$NON-NLS-1$
private static TLDRegistryManager INSTANCE;
/**
* @return the singleton instance
*/
private static TLDRegistryManager getGlobalManager()
{
synchronized (TLDRegistryManager.class)
{
if (INSTANCE == null)
{
if (JSFCoreTraceOptions.TRACE_TLDREGISTRYMANAGER)
{
JSFCoreTraceOptions
.log("TLDRegistryManager: Initializing TLDRegistryManager singleton"); //$NON-NLS-1$
}
INSTANCE = new TLDRegistryManager();
}
return INSTANCE;
}
}
private TLDRegistryManager()
{
super(ResourcesPlugin.getWorkspace());
final ISaveParticipant participant = new MyWorkspaceSaveParticipant();
try
{
ResourcesPlugin.getWorkspace().addSaveParticipant(JSFCorePlugin.getDefault().getPluginID()
, participant);
}
catch (CoreException e)
{
JSFCorePlugin.log(e, "TLDRegistryManager failed to install save participant"); //$NON-NLS-1$
}
}
@Override
protected TLDTagRegistry createNewInstance(final IProject project)
{
if (JSFCoreTraceOptions.TRACE_TLDREGISTRYMANAGER)
{
JSFCoreTraceOptions
.log("TLDRegistryManager: creating new instance for " //$NON-NLS-1$
+ project.toString());
}
return new TLDTagRegistry(project);
}
@Override
protected void runAfterGetInstance(final IProject resource)
{
if (JSFCoreTraceOptions.TRACE_TLDREGISTRYMANAGER)
{
JSFCoreTraceOptions
.log("TLDRegistryManager: Acquired instance for " //$NON-NLS-1$
+ resource.toString());
}
}
@Override
protected void runBeforeGetInstance(final IProject resource)
{
if (JSFCoreTraceOptions.TRACE_TLDREGISTRYMANAGER)
{
JSFCoreTraceOptions.log("TLDRegistryManager: Getting registry for " //$NON-NLS-1$
+ resource.toString());
}
}
/**
* Adapter used to allow creation by extension point.
*
* @author cbateman
*
*/
public static class MyRegistryFactory extends TagRegistryFactory
{
@Override
public ITagRegistry createTagRegistry(IProject project)
throws TagRegistryFactoryException
{
try
{
return getGlobalManager().getInstance(project);
}
catch (ManagedObjectException e)
{
throw new TagRegistryFactoryException(e);
}
}
@Override
public boolean isInstance(IProject project)
{
return getGlobalManager().isInstance(project);
}
public String getDisplayName()
{
return Messages.TLDRegistryManager_DisplayName;
}
@Override
public boolean projectIsValid(IProject project) {
if (project == null)
{
return false;
}
// Check that this is a dynamic web project
// (I.E. the JST Web facet is installed)
try
{
if (ProjectFacetsManager.isProjectFacetDefined(JST_WEB_MODULE))
{
IFacetedProject faceted = ProjectFacetsManager.create(project);
IProjectFacet webModuleFacet = ProjectFacetsManager.getProjectFacet(JST_WEB_MODULE);
if (faceted != null && faceted.hasProjectFacet(webModuleFacet))
{
return true;
}
}
}
catch (CoreException ce)
{
JSFCorePlugin.log(ce, "TLDRegistryManager failed checking web project"); //$NON-NLS-1$
}
return false;
}
}
private class MyWorkspaceSaveParticipant implements ISaveParticipant
{
public void saving(ISaveContext context) throws CoreException
{
if (JSFCoreTraceOptions.TRACE_TLDREGISTRYMANAGER)
{
JSFCoreTraceOptions.log("MyWorkspaceSaveParticipant.saving: Kind="+context.getKind()); //$NON-NLS-1$
}
try
{
if (context.getKind() == ISaveContext.FULL_SAVE)
{
final Collection<IProject> projects = TLDRegistryManager.this
.getManagedResources();
for (final IProject project : projects)
{
saveProject(project);
}
}
else if (context.getKind() == ISaveContext.PROJECT_SAVE)
{
saveProject(context.getProject());
}
}
catch (ManagedObjectException moe)
{
throw new CoreException(new Status(IStatus.ERROR,
JSFCorePlugin.PLUGIN_ID, "Couldn't commit workspace", //$NON-NLS-1$
moe));
}
}
private void saveProject(final IProject project)
throws ManagedObjectException
{
if (JSFCoreTraceOptions.TRACE_TLDREGISTRYMANAGER)
{
JSFCoreTraceOptions.log("MyWorkspaceSaveParticipant.saveProject: Project="+project.toString()); //$NON-NLS-1$
}
// check that there is already instance -- don't do anything if there
// isn't already an instance for project.
if (TLDRegistryManager.this.isInstance(project))
{
final TLDTagRegistry registry = TLDRegistryManager.this
.getInstance(project);
if (JSFCoreTraceOptions.TRACE_TLDREGISTRYMANAGER)
{
JSFCoreTraceOptions.log("MyWorkspaceSaveParticipant.saveProject: calling checkpoint on registry: "+registry.toString()); //$NON-NLS-1$
}
registry.checkpoint();
}
}
public void doneSaving(ISaveContext context)
{
// nothing to do
}
public void prepareToSave(ISaveContext context) throws CoreException
{
// nothing to do
}
public void rollback(ISaveContext context)
{
// nothing to do
}
}
}