/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.directory.studio.schemaeditor.controller;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.commons.collections.map.MultiValueMap;
import org.apache.directory.api.util.Strings;
import org.apache.directory.studio.schemaeditor.model.Project;
import org.apache.directory.studio.schemaeditor.model.Project.ProjectState;
/**
* This class represents the ProjectsHandler.
* <p>
* It used to handle the schema projects.
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
*/
public class ProjectsHandler
{
/** The ProjectsHandler instance */
private static ProjectsHandler instance;
/** The projects List */
private List<Project> projectsList;
/** The projects Map */
private Map<String, Project> projectsMap;
/** The ProjectsHandler listeners */
private List<ProjectsHandlerListener> projectsHandlerListeners;
/** The projects listeners */
private MultiValueMap projectsListeners;
/** The open project */
private Project openProject;
/**
* Gets the singleton instance of the ProjectsHandler.
*
* @return
* the singleton instance of the ProjectsHandler
*/
public static ProjectsHandler getInstance()
{
if ( instance == null )
{
instance = new ProjectsHandler();
}
return instance;
}
/**
* Private Constructor.
*/
private ProjectsHandler()
{
projectsList = new ArrayList<Project>();
projectsMap = new HashMap<String, Project>();
projectsHandlerListeners = new ArrayList<ProjectsHandlerListener>();
projectsListeners = new MultiValueMap();
}
/**
* Adds a project.
*
* @param project
* a project
*/
public void addProject( Project project )
{
projectsList.add( project );
projectsMap.put( Strings.toLowerCase( project.getName() ), project );
notifyProjectAdded( project );
}
/**
* Removes the given project.
*
* @param project
* the project
*/
public void removeProject( Project project )
{
projectsList.remove( project );
projectsMap.remove( Strings.toLowerCase( project.getName() ) );
notifyProjectRemoved( project );
}
/**
* Gets the project identified by the given name.
*
* @param name
* the name of the project
* @return
* the corresponding project
*/
public Project getProject( String name )
{
return projectsMap.get( Strings.toLowerCase( name ) );
}
/**
* Gets the projects List.
*
* @return
* the projects List
*/
public List<Project> getProjects()
{
return projectsList;
}
/**
* Renames the given project.
*
* @param project
* the project
* @param name
* the new name
*/
public void renameProject( Project project, String name )
{
projectsMap.remove( Strings.toLowerCase( project.getName() ) );
project.setName( name );
projectsMap.put( Strings.toLowerCase( name ), project );
notifyProjectRenamed( project );
}
/**
* Return whether or not the given name is already taken by another project
*
* @param name
* the name
* @return
* true if the given name is already taken, false if not
*/
public boolean isProjectNameAlreadyTaken( String name )
{
return projectsMap.containsKey( Strings.toLowerCase( name ) );
}
/**
* Opens the given project (and closes the previously opened project)
*
* @param project
* the project
*/
public void openProject( Project project )
{
Project oldOpenProject = openProject;
if ( oldOpenProject != null )
{
oldOpenProject.setState( ProjectState.CLOSED );
}
openProject = project;
openProject.setState( ProjectState.OPEN );
notifyOpenProjectChanged( oldOpenProject, openProject );
}
/**
* Closes the given project
*
* @param project
* the project
*/
public void closeProject( Project project )
{
Project oldOpenProject = openProject;
if ( oldOpenProject.equals( project ) )
{
oldOpenProject.setState( ProjectState.CLOSED );
openProject = null;
}
notifyOpenProjectChanged( oldOpenProject, openProject );
}
/**
* Gets the 'Open' project.
*
* @return
* the 'Open' project
*/
public Project getOpenProject()
{
return openProject;
}
/**
* Sets the 'Open' project
*
* @param project
* the project
*/
public void setOpenProject( Project project )
{
openProject = project;
}
/**
* Adds a ProjectsHandlerListener to the ProjectsHandler.
*
* @param listener
* the listener
*/
public void addListener( ProjectsHandlerListener listener )
{
projectsHandlerListeners.add( listener );
}
/**
* Remove the given ProjectsHandlerListener.
*
* @param listener
* the listener
*/
public void removeListener( ProjectsHandlerListener listener )
{
projectsHandlerListeners.remove( listener );
}
/**
* Adds a ProjectListener to the given Project.
*
* @param project
* the project
* @param listener
* the listener
*/
public void addListener( Project project, ProjectListener listener )
{
if ( !projectsListeners.containsValue( project, listener ) )
{
projectsListeners.put( project, listener );
}
}
/**
* Removes the given ProjectListener.
*
* @param project
* the project
* @param listener
* the listener
*/
public void removeListener( Project project, ProjectListener listener )
{
projectsListeners.remove( project, listener );
}
/**
* Notifies the ProjectsHandler's listener that a project has been added.
*
* @param project
* the added project
*/
private void notifyProjectAdded( Project project )
{
for ( ProjectsHandlerListener listener : projectsHandlerListeners )
{
listener.projectAdded( project );
}
}
/**
* Notifies the ProjectsHandler's listener that a project has been removed.
*
* @param project
* the removed project
*/
private void notifyProjectRemoved( Project project )
{
for ( ProjectsHandlerListener listener : projectsHandlerListeners )
{
listener.projectRemoved( project );
}
}
/**
* Notifies the project's Listeners that the project has been renamed.
*
* @param project
* the renamed project
*/
@SuppressWarnings("unchecked")
private void notifyProjectRenamed( Project project )
{
List<ProjectListener> listeners = ( List<ProjectListener> ) projectsListeners.get( project );
for ( ProjectListener listener : listeners )
{
listener.projectRenamed();
}
}
/**
* Notifies the ProjectsHandler's listener that a new project has been opened.
*
* @param oldProject
* the old opened project
* @param newProject
* the new opened project
*/
private void notifyOpenProjectChanged( Project oldProject, Project newProject )
{
for ( ProjectsHandlerListener listener : projectsHandlerListeners )
{
listener.openProjectChanged( oldProject, newProject );
}
}
}