/*
* 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.ldapbrowser.common.widgets.entryeditor;
import java.util.ArrayList;
import java.util.List;
import org.apache.directory.studio.ldapbrowser.common.BrowserCommonActivator;
import org.apache.directory.studio.ldapbrowser.common.BrowserCommonConstants;
import org.apache.directory.studio.ldapbrowser.core.jobs.InitializeAttributesRunnable;
import org.apache.directory.studio.ldapbrowser.core.jobs.StudioBrowserJob;
import org.apache.directory.studio.ldapbrowser.core.model.AttributeHierarchy;
import org.apache.directory.studio.ldapbrowser.core.model.IAttribute;
import org.apache.directory.studio.ldapbrowser.core.model.IEntry;
import org.apache.directory.studio.ldapbrowser.core.model.IRootDSE;
import org.apache.directory.studio.ldapbrowser.core.model.IValue;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
/**
* The EntryEditorWidgetContentProvider implements the content provider for
* the entry editor widget. It accepts an {@link IEntry} or an
* {@link AttributeHierarchy} as input.
*
* @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
* @version $Rev$, $Date$
*/
public class EntryEditorWidgetContentProvider implements ITreeContentProvider
{
/** The preferences. */
protected EntryEditorWidgetPreferences preferences;
/** The main widget. */
protected EntryEditorWidget mainWidget;
/**
* Creates a new instance of EntryEditorWidgetContentProvider.
*
* @param preferences the preferences
* @param mainWidget the main widget
*/
public EntryEditorWidgetContentProvider( EntryEditorWidgetPreferences preferences, EntryEditorWidget mainWidget )
{
this.preferences = preferences;
this.mainWidget = mainWidget;
}
/**
* {@inheritDoc}
*
* This implementations updates the enabled state and the info text.
*/
public void inputChanged( Viewer viewer, Object oldInput, Object newInput )
{
if ( mainWidget != null )
{
String dn = ""; //$NON-NLS-1$
boolean enabled = true;
if ( newInput != null && newInput instanceof IEntry )
{
IEntry entry = ( IEntry ) newInput;
dn = Messages.getString( "EntryEditorWidgetContentProvider.DNLabel" ) + entry.getDn().getUpName(); //$NON-NLS-1$
}
else if ( newInput != null && newInput instanceof AttributeHierarchy )
{
AttributeHierarchy ah = ( AttributeHierarchy ) newInput;
dn = Messages.getString( "EntryEditorWidgetContentProvider.DNLabel" ) + ah.getAttribute().getEntry().getDn().getUpName(); //$NON-NLS-1$
}
else
{
dn = Messages.getString( "EntryEditorWidgetContentProvider.NoEntrySelected" ); //$NON-NLS-1$
enabled = false;
}
if ( mainWidget.getInfoText() != null && !mainWidget.getInfoText().isDisposed() )
{
mainWidget.getInfoText().setText( dn );
}
if ( mainWidget.getQuickFilterWidget() != null )
{
mainWidget.getQuickFilterWidget().setEnabled( enabled );
}
if ( mainWidget.getViewer() != null && !mainWidget.getViewer().getTree().isDisposed() )
{
mainWidget.getViewer().getTree().setEnabled( enabled );
}
}
}
/**
* {@inheritDoc}
*/
public void dispose()
{
preferences = null;
mainWidget = null;
}
/**
* {@inheritDoc}
*/
public Object[] getElements( Object inputElement )
{
boolean showOperationalAttributes = BrowserCommonActivator.getDefault().getPreferenceStore().getBoolean(
BrowserCommonConstants.PREFERENCE_ENTRYEDITOR_SHOW_OPERATIONAL_ATTRIBUTES );
if ( inputElement != null && inputElement instanceof IEntry )
{
IEntry entry = ( IEntry ) inputElement;
if ( !entry.isAttributesInitialized() )
{
InitializeAttributesRunnable runnable = new InitializeAttributesRunnable( entry );
StudioBrowserJob job = new StudioBrowserJob( runnable );
job.execute();
return new Object[0];
}
else
{
IAttribute[] attributes = entry.getAttributes();
Object[] values = getValues( attributes, showOperationalAttributes );
return values;
}
}
else if ( inputElement != null && inputElement instanceof AttributeHierarchy )
{
AttributeHierarchy ah = ( AttributeHierarchy ) inputElement;
IAttribute[] attributes = ah.getAttributes();
Object[] values = getValues( attributes, showOperationalAttributes );
return values;
}
else
{
return new Object[0];
}
}
/**
* Gets the values of the given attributes.
*
* @param attributes the attributes
* @param showOperationalAttributes true if operational attributes are visible
*
* @return the values
*/
private Object[] getValues( IAttribute[] attributes, boolean showOperationalAttributes )
{
List<Object> valueList = new ArrayList<Object>();
if ( attributes != null )
{
for ( IAttribute attribute : attributes )
{
if ( !attribute.isOperationalAttribute() || showOperationalAttributes
|| ( attribute.getEntry() instanceof IRootDSE ) )
{
IValue[] values = attribute.getValues();
if ( preferences == null || !preferences.isUseFolding()
|| ( values.length <= preferences.getFoldingThreshold() ) )
{
for ( IValue value : values )
{
valueList.add( value );
}
}
else
{
// if folding threshold is exceeded then return the attribute itself
valueList.add( attribute );
}
}
}
}
return valueList.toArray();
}
/**
* {@inheritDoc}
*/
public Object[] getChildren( Object parentElement )
{
if ( parentElement instanceof IAttribute )
{
IAttribute attribute = ( IAttribute ) parentElement;
IValue[] values = attribute.getValues();
return values;
}
return null;
}
/**
* {@inheritDoc}
*/
public Object getParent( Object element )
{
if ( element instanceof IValue )
{
return ( ( IValue ) element ).getAttribute();
}
return null;
}
/**
* {@inheritDoc}
*/
public boolean hasChildren( Object element )
{
return ( element instanceof IAttribute );
}
}