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/*******************************************************************************
* Copyright (c) 2001, 2008 IBM 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.xsd.ui.internal.editor;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.GraphicalEditPart;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.PlatformUI;
import org.eclipse.wst.xsd.ui.internal.adapters.XSDAttributeDeclarationAdapter;
import org.eclipse.wst.xsd.ui.internal.adapters.XSDElementDeclarationAdapter;
import org.eclipse.wst.xsd.ui.internal.adt.design.IKeyboardDrag;
import org.eclipse.wst.xsd.ui.internal.adt.design.editpolicies.KeyBoardAccessibilityEditPolicy;
import org.eclipse.wst.xsd.ui.internal.commands.BaseDragAndDropCommand;
import org.eclipse.wst.xsd.ui.internal.commands.XSDAttributeDragAndDropCommand;
import org.eclipse.wst.xsd.ui.internal.commands.XSDElementDragAndDropCommand;
import org.eclipse.wst.xsd.ui.internal.design.editparts.XSDBaseFieldEditPart;
import org.eclipse.xsd.XSDWildcard;
public class KeyboardDragImpl implements IKeyboardDrag
{
public void performKeyboardDrag(GraphicalEditPart movingElement, int direction)
{
KeyBoardAccessibilityEditPolicy policy = (KeyBoardAccessibilityEditPolicy) movingElement.getEditPolicy(KeyBoardAccessibilityEditPolicy.KEY);
EditPart rightElement = policy.getRelativeEditPart(movingElement, direction);
policy = (KeyBoardAccessibilityEditPolicy) rightElement.getEditPolicy(KeyBoardAccessibilityEditPolicy.KEY);
EditPart leftElement = (policy != null) ? policy.getRelativeEditPart(rightElement, direction) : null;
// TODO: add support for extenders
if (!(movingElement instanceof XSDBaseFieldEditPart)) return;
XSDBaseFieldEditPart movingField = (XSDBaseFieldEditPart) movingElement;
XSDBaseFieldEditPart leftField = (XSDBaseFieldEditPart) leftElement;
XSDBaseFieldEditPart rightField = (XSDBaseFieldEditPart) rightElement;
Object movingObject = movingField.getModel();
BaseDragAndDropCommand command = null;
if (movingObject instanceof XSDElementDeclarationAdapter || movingObject instanceof XSDWildcard)
{
command = new XSDElementDragAndDropCommand(movingField, leftField, rightField, direction);
}
else if (movingObject instanceof XSDAttributeDeclarationAdapter)
{
command = new XSDAttributeDragAndDropCommand(movingField, leftField, rightField, direction);
}
if (command != null && command.canExecute())
{
command.execute();
// This is to reselect the moved item
try
{
IEditorPart editor = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getActiveEditor();
if (editor != null && editor.getAdapter(ISelectionProvider.class) != null)
{
ISelectionProvider provider = (ISelectionProvider) editor.getAdapter(ISelectionProvider.class);
if (provider != null)
{
provider.setSelection(new StructuredSelection(movingElement.getModel()));
}
}
}
catch (Exception e)
{
}
}
}
}
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