/**
 * 
 */
package org.eclipse.epf.diagramming.base.actions;

import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.epf.diagram.core.bridge.BridgeHelper;
import org.eclipse.epf.diagram.core.bridge.DiagramAdapter;
import org.eclipse.epf.diagram.core.bridge.NodeAdapter;
import org.eclipse.epf.diagram.core.part.DiagramEditorInput;
import org.eclipse.epf.diagram.core.part.util.DiagramEditorUtil;
import org.eclipse.epf.diagramming.part.EPFDiagramEditorPlugin;
import org.eclipse.epf.library.edit.util.IDiagramManager;
import org.eclipse.gef.EditPart;
import org.eclipse.gmf.runtime.diagram.ui.editparts.DiagramEditPart;
import org.eclipse.gmf.runtime.notation.Diagram;
import org.eclipse.gmf.runtime.notation.Node;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPart;

/**
 * Action to open activity detail diagram for selected Activity.
 * @author Shashidhar Kannoori
 */
public class OpenActivityDetailDiagramAction implements IObjectActionDelegate {

	private EditPart selectedPart;
	private IWorkbenchPart targetPart;

	/* (non-Javadoc)
	 * @see org.eclipse.ui.IObjectActionDelegate#setActivePart(org.eclipse.jface.action.IAction, org.eclipse.ui.IWorkbenchPart)
	 */
	public void setActivePart(IAction action, IWorkbenchPart targetPart) {
		this.targetPart = targetPart;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
	 */
	public void run(IAction action) {
		
		
		if(selectedPart != null){
			Node view = (Node)selectedPart.getModel();
			DiagramEditPart diagramEditPart = (DiagramEditPart)selectedPart.getParent();
			Diagram diagram = (Diagram)diagramEditPart.getModel();
			DiagramAdapter diagramAdapter = BridgeHelper.getDiagramAdapter(diagram.getElement());
			
			NodeAdapter adapter = BridgeHelper.getNodeAdapter(view.getElement());
			Object selectedObject = adapter.getWrapper();
			if(selectedObject == null){
				selectedObject = adapter.getElement();
			}
			//IEditorPart parent = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getActiveEditor();
			DiagramEditorInput input = new org.eclipse.epf.diagram.core.part.DiagramEditorInput(
					selectedObject, diagramAdapter.getSuppression(), IDiagramManager.ACTIVITY_DIAGRAM);
			DiagramEditorUtil.openDiagramEditor(targetPart.getSite().getPage(), input, 
					EPFDiagramEditorPlugin.DIAGRAM_PREFERENCES_HINT, new NullProgressMonitor());
		}
	}

	/* (non-Javadoc)
	 * @see org.eclipse.ui.IActionDelegate#selectionChanged(org.eclipse.jface.action.IAction, org.eclipse.jface.viewers.ISelection)
	 */
	public void selectionChanged(IAction action, ISelection selection) {
		if (selection instanceof IStructuredSelection) {
			IStructuredSelection structuredSelection = (IStructuredSelection) selection;
			if (structuredSelection.size() == 1
					&& structuredSelection.getFirstElement() instanceof EditPart) {
				selectedPart = (EditPart) structuredSelection
						.getFirstElement();
			}
		}
	}
}