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/*******************************************************************************
* 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.internal.provisional;
import java.util.Map;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.QualifiedName;
import org.eclipse.core.runtime.Status;
import org.eclipse.jst.jsf.core.internal.JSFCorePlugin;
import org.eclipse.jst.jsf.designtime.internal.provisional.context.AbstractDTExternalContextFactory;
import org.eclipse.jst.jsf.designtime.internal.provisional.context.DTFacesContext;
import org.eclipse.jst.jsf.designtime.internal.provisional.context.IExternalContextFactoryLocator;
import org.eclipse.jst.jsf.designtime.internal.provisional.el.AbstractDTMethodResolver;
import org.eclipse.jst.jsf.designtime.internal.provisional.el.AbstractDTPropertyResolver;
import org.eclipse.jst.jsf.designtime.internal.provisional.el.AbstractDTVariableResolver;
/**
* Per-web-application manager that manages design time information for a corresponding
* project.
*
* Clients should not sub-class.
*
* @author cbateman
*
*/
public class DesignTimeApplicationManager
{
// TODO: load from property file?
private static final String PROPERTY_QUALIFIER = "org.eclipse.jst.jsf.designtime.internal";
private static final String SESSION_PROPERTY_NAME_PROJECT = "DesignTimeApplicationManager";
private static final QualifiedName SESSION_PROPERTY_KEY_PROJECT
= new QualifiedName(PROPERTY_QUALIFIER, SESSION_PROPERTY_NAME_PROJECT);
private static final String SESSION_PROPERTY_NAME_FACES_CONTEXT = "DTFacesContext";
private static final QualifiedName SESSION_PROPERTY_KEY_FACES_CONTEXT
= new QualifiedName(PROPERTY_QUALIFIER, SESSION_PROPERTY_NAME_FACES_CONTEXT);
private static final String PERSIST_PROPERTY_NAME_EXTERNAL_CONTEXT_PROVIDER =
"ExternalContextProvider";
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";
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";
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";
private static final QualifiedName PERSIST_PROPERTY_KEY_METHOD_RESOLVER_PROVIDER =
new QualifiedName(PROPERTY_QUALIFIER, PERSIST_PROPERTY_NAME_METHOD_RESOLVER_PROVIDER);
private static final String DEFAULT_EXTERNAL_CONTEXT_ID =
"org.eclipse.jst.jsf.core.externalcontext.default";
private static final String DEFAULT_VARIABLE_RESOLVER_ID =
"org.eclipse.jst.jsf.core.variableresolver.default";
private static final String DEFAULT_PROPERTY_RESOLVER_ID =
"org.eclipse.jst.jsf.core.propertyresolver.default";
private static final String DEFAULT_METHOD_RESOLVER_ID =
"org.eclipse.jst.jsf.core.methodresolver.default";
/**
* @param project
* @return the app manager associated with project
*/
public final static DesignTimeApplicationManager getInstance(IProject project)
{
if (project == null)
{
return null;
}
try
{
synchronized(project)
{
Object manager =
project.getSessionProperty(SESSION_PROPERTY_KEY_PROJECT);
if (manager == null)
{
manager = new DesignTimeApplicationManager(project);
project.setSessionProperty(SESSION_PROPERTY_KEY_PROJECT, manager);
}
return (DesignTimeApplicationManager) manager;
}
}
catch (CoreException ce)
{
Platform.getLog(JSFCorePlugin.getDefault().getBundle()).log(new Status(IStatus.ERROR, JSFCorePlugin.getDefault().getBundle().getSymbolicName(), 0, "Problem loading design time appmanager", new Throwable(ce)));
}
return null;
}
// instance definition
private final IProject _project;
private DesignTimeApplicationManager(IProject project)
{
_project = project;
}
/**
* @param file
* @return the faces context for the file or null if not found
*/
public DTFacesContext getFacesContext(IFile file)
{
try
{
synchronized(file)
{
Object context = file.getSessionProperty(SESSION_PROPERTY_KEY_FACES_CONTEXT);
if (context == null)
{
// TODO: change to non-anonymous class
IExternalContextFactoryLocator locator =
new IExternalContextFactoryLocator()
{
public AbstractDTExternalContextFactory getFactory()
{
return (AbstractDTExternalContextFactory)
getResolver(PERSIST_PROPERTY_KEY_EXTERNAL_CONTEXT_PROVIDER,
JSFCorePlugin.getExternalContextProviders(),
DEFAULT_EXTERNAL_CONTEXT_ID);
}
};
context = new DTFacesContext(locator);
file.setSessionProperty(SESSION_PROPERTY_KEY_PROJECT, context);
}
return (DTFacesContext) context;
}
}
catch (CoreException ce)
{
Platform.getLog(JSFCorePlugin.getDefault().getBundle())
.log(new Status(IStatus.ERROR,
JSFCorePlugin.getDefault().getBundle().getSymbolicName(),
0, "Problem loading design time facescontext",
new Throwable(ce)));
}
return null;
}
/**
* @param resolverPluginId
* @throws CoreException
*/
public synchronized void setExternalContextProvider(final String resolverPluginId)
throws CoreException
{
_project.setPersistentProperty
(PERSIST_PROPERTY_KEY_EXTERNAL_CONTEXT_PROVIDER, resolverPluginId);
}
/**
* @return the id of the active design time external context provider
*/
public synchronized String getExternalContextProvider()
{
return getResolverId(PERSIST_PROPERTY_KEY_EXTERNAL_CONTEXT_PROVIDER,
DEFAULT_EXTERNAL_CONTEXT_ID);
}
/**
* @return the designtime variable resolver for this application
*/
public synchronized AbstractDTVariableResolver getVariableResolver()
{
return (AbstractDTVariableResolver) getResolver(PERSIST_PROPERTY_KEY_VARIABLE_RESOLVER_PROVIDER,
JSFCorePlugin.getVariableResolvers(),
DEFAULT_VARIABLE_RESOLVER_ID);
}
/**
* 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
{
_project.setPersistentProperty
(PERSIST_PROPERTY_KEY_VARIABLE_RESOLVER_PROVIDER, resolverPluginId);
}
/**
* @return the id of the active design time variable resolver
*/
public synchronized String getVariableResolverProvider()
{
return getResolverId(PERSIST_PROPERTY_KEY_VARIABLE_RESOLVER_PROVIDER,
DEFAULT_VARIABLE_RESOLVER_ID);
}
/**
* @return the designtime property resolver for this application
*/
public synchronized AbstractDTPropertyResolver getPropertyResolver()
{
return (AbstractDTPropertyResolver) getResolver(PERSIST_PROPERTY_KEY_PROPERTY_RESOLVER_PROVIDER,
JSFCorePlugin.getPropertyResolvers(),
DEFAULT_PROPERTY_RESOLVER_ID);
}
/**
* @param resolverPluginId
* @throws CoreException -- if setting the provider fails
*/
public synchronized void setPropertyResolverProvider(final String resolverPluginId)
throws CoreException
{
_project.setPersistentProperty
(PERSIST_PROPERTY_KEY_PROPERTY_RESOLVER_PROVIDER, resolverPluginId);
}
/**
* @return the id of the active design time variable resolver
*/
public synchronized String getPropertyResolverProvider()
{
return getResolverId(PERSIST_PROPERTY_KEY_PROPERTY_RESOLVER_PROVIDER,
DEFAULT_PROPERTY_RESOLVER_ID);
}
/**
* @return the designtime method resolver for this application
*/
public synchronized AbstractDTMethodResolver getMethodResolver()
{
return (AbstractDTMethodResolver) getResolver(PERSIST_PROPERTY_KEY_METHOD_RESOLVER_PROVIDER,
JSFCorePlugin.getMethodResolvers(),
DEFAULT_METHOD_RESOLVER_ID);
}
/**
* @param resolverPluginId
* @throws CoreException -- if setting the plugin fails
*/
public synchronized void setMethodResolverProvider(final String resolverPluginId)
throws CoreException
{
_project.setPersistentProperty
(PERSIST_PROPERTY_KEY_METHOD_RESOLVER_PROVIDER, resolverPluginId);
}
/**
* @return the id of the active design time variable resolver
*/
public synchronized String getMethodResolverProvider()
{
return getResolverId(PERSIST_PROPERTY_KEY_METHOD_RESOLVER_PROVIDER,
DEFAULT_METHOD_RESOLVER_ID);
}
private Object getResolver(final QualifiedName pluginKey,
final Map registry,
final String defaultId)
{
String pluginId = defaultId;
try
{
pluginId =
_project.getPersistentProperty(pluginKey);
// if don't have the plugin in the registry, then
// revert to default
if (pluginId == null)
{
pluginId = defaultId;
}
else if (registry.get(pluginId) == null)
{
JSFCorePlugin.getDefault().getLog().log(
new Status(IStatus.WARNING, JSFCorePlugin.PLUGIN_ID,
0, "Plugin: "+pluginId+" not found",
new Throwable()));
pluginId = defaultId;
}
}
catch (CoreException ce)
{
JSFCorePlugin.getDefault().getLog().log(
new Status(IStatus.ERROR, JSFCorePlugin.PLUGIN_ID,
0, "Error getting plugin property",
ce));
pluginId = defaultId;
// fall-through and use the default
}
return registry.get(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 (CoreException ce)
{
// do nothing; fall through and return default
}
return id;
}
}
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