/*
* 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.templateeditor.view.preferences;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.collections.map.MultiValueMap;
import org.apache.directory.api.ldap.model.schema.ObjectClass;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.apache.directory.studio.templateeditor.EntryTemplatePlugin;
import org.apache.directory.studio.templateeditor.EntryTemplatePluginConstants;
import org.apache.directory.studio.templateeditor.EntryTemplatePluginUtils;
import org.apache.directory.studio.templateeditor.TemplatesManagerListener;
import org.apache.directory.studio.templateeditor.model.Template;
/**
* This class implements a content provider for the table viewer of
* the Template Entry Editor preference page.
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
*/
public class TemplatesContentProvider implements ITreeContentProvider, TemplatesManagerListener
{
/** The associated page */
private TemplateEntryEditorPreferencePage page;
/** The templates manager */
private PreferencesTemplatesManager manager;
/** The preference store */
private IPreferenceStore store;
/** A flag indicating if the content provider has already been initialized */
private boolean initialized = false;
/** The list of templates */
private List<Template> templates;
/** The map where templates are organized by object classes */
private MultiValueMap objectClassesTemplatesMap;
/**
* Creates a new instance of TemplatesContentProvider.
*
* @param page
* the associated page
* @param manager
* the templates manager
*/
public TemplatesContentProvider( TemplateEntryEditorPreferencePage page, PreferencesTemplatesManager manager )
{
this.page = page;
this.manager = manager;
manager.addListener( this );
store = EntryTemplatePlugin.getDefault().getPreferenceStore();
templates = new ArrayList<Template>();
objectClassesTemplatesMap = new MultiValueMap();
}
/**
* {@inheritDoc}
*/
public Object[] getChildren( Object parentElement )
{
// Object class presentation
if ( isObjectClassPresentation() )
{
if ( parentElement instanceof ObjectClass )
{
List<Template> templates = ( List<Template> ) objectClassesTemplatesMap
.get( ( ObjectClass ) parentElement );
if ( templates != null )
{
return templates.toArray();
}
}
}
// Template presentation
else if ( isTemplatePresentation() )
{
// Elements have no children
return new Object[0];
}
return new Object[0];
}
/**
* {@inheritDoc}
*/
public Object getParent( Object element )
{
// Elements have no parent, as they have no children
return null;
}
/**
* {@inheritDoc}
*/
public boolean hasChildren( Object element )
{
// Object class presentation
if ( isObjectClassPresentation() )
{
if ( element instanceof ObjectClass )
{
return objectClassesTemplatesMap.containsKey( ( ObjectClass ) element );
}
}
// Template presentation
else if ( isTemplatePresentation() )
{
// Elements have no children
return false;
}
return false;
}
/**
* {@inheritDoc}
*/
public Object[] getElements( Object inputElement )
{
if ( !initialized )
{
// Looping on the templates
for ( Template template : manager.getTemplates() )
{
// Adding the template
templates.add( template );
// Adding the structural object class
objectClassesTemplatesMap.put( EntryTemplatePluginUtils
.getObjectClassDescriptionFromDefaultSchema( template.getStructuralObjectClass() ), template );
}
// Setting the initialized flag to true
initialized = true;
}
// Object class presentation
if ( isObjectClassPresentation() )
{
// Returning the object classes
return objectClassesTemplatesMap.keySet().toArray();
}
// Template presentation
else if ( isTemplatePresentation() )
{
// Returning the templates
return templates.toArray();
}
return new Object[0];
}
/**
* {@inheritDoc}
*/
public void dispose()
{
EntryTemplatePlugin.getDefault().getTemplatesManager().removeListener( this );
}
/**
* {@inheritDoc}
*/
public void inputChanged( Viewer viewer, Object oldInput, Object newInput )
{
// Nothing to do.
}
/**
* Indicates if the template presentation is selected.
*
* @return
* <code>true</code> if the template presentation is selected,
* <code>false</code> if not
*/
public boolean isTemplatePresentation()
{
return ( store.getInt( EntryTemplatePluginConstants.PREF_TEMPLATES_PRESENTATION ) == EntryTemplatePluginConstants.PREF_TEMPLATES_PRESENTATION_TEMPLATE );
}
/**
* Indicates if the object class presentation is selected.
*
* @return
* <code>true</code> if the object class presentation is selected,
* <code>false</code> if not
*/
public boolean isObjectClassPresentation()
{
return ( store.getInt( EntryTemplatePluginConstants.PREF_TEMPLATES_PRESENTATION ) == EntryTemplatePluginConstants.PREF_TEMPLATES_PRESENTATION_OBJECT_CLASS );
}
/**
* {@inheritDoc}
*/
public void templateAdded( Template template )
{
// Adding the template
templates.add( template );
// Adding the structural object class
objectClassesTemplatesMap.put( EntryTemplatePluginUtils.getObjectClassDescriptionFromDefaultSchema( template
.getStructuralObjectClass() ), template );
// Refreshing the viewer
page.refreshViewer();
}
/**
* {@inheritDoc}
*/
public void templateRemoved( Template template )
{
// Removing the structural object class
objectClassesTemplatesMap.remove( EntryTemplatePluginUtils.getObjectClassDescriptionFromDefaultSchema( template
.getStructuralObjectClass() ), template );
// Removing the template
templates.remove( template );
// Refreshing the viewer
page.refreshViewer();
}
/**
* {@inheritDoc}
*/
public void templateDisabled( Template template )
{
// Nothing to do
}
/**
* {@inheritDoc}
*/
public void templateEnabled( Template template )
{
// Nothing to do
}
}