// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

package com.symbian.smt.gui;

import org.eclipse.core.resources.IFile;

import org.eclipse.core.resources.IMarker;

import org.eclipse.core.resources.IResource;

import org.eclipse.core.runtime.CoreException;

import org.eclipse.jface.action.Action;

import org.eclipse.jface.viewers.ISelection;

import org.eclipse.jface.viewers.ISelectionProvider;

import org.eclipse.jface.viewers.IStructuredSelection;

import org.eclipse.ui.IWorkbenchPage;

import org.eclipse.ui.PartInitException;

import org.eclipse.ui.part.FileEditorInput;

/**

 * @author barbararosi-schwartz

 * 

 */

public class OpenFileAction extends Action {

	IWorkbenchPage page;

	ISelectionProvider selectionProvider;

	public OpenFileAction(IWorkbenchPage page,

			ISelectionProvider selectionProvider) {

		this.page = page;

		this.selectionProvider = selectionProvider;

		setText("Open");

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see org.eclipse.jface.action.Action#isEnabled()

	 */

	@Override

	public boolean isEnabled() {

		ISelection selection = selectionProvider.getSelection();

		if (!selection.isEmpty()) {

			IStructuredSelection ssel = (IStructuredSelection) selection;

			if (ssel.size() > 1) {

				return false;

			}

			IResource resource = (IResource) ssel.getFirstElement();

			if (resource instanceof IFile) {

				try {

					return !isResourceMarkedAsUrl((IFile) resource);

				} catch (CoreException e) {

					return false;

				}

			}

		}

		return false;

	}

	private boolean isResourceMarkedAsUrl(IFile file) throws CoreException {

		IMarker[] messageMarkers = file.findMarkers(IMarker.TASK, false,

				IResource.DEPTH_ZERO);

		for (int i = 0; i < messageMarkers.length; i++) {

			IMarker marker = messageMarkers[i];

			if (marker.getAttribute(ManageResources.IS_URL, false)) {

				return true;

			}

		}

		return false;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see org.eclipse.jface.action.Action#run()

	 */

	@Override

	public void run() {

		IStructuredSelection ssel = (IStructuredSelection) selectionProvider

				.getSelection();

		IFile file = (IFile) ssel.getFirstElement();

		try {

			page.openEditor(new FileEditorInput(file),

					"com.symbian.smt.gui.editors.xmleditor.XMLEditor", true);

		} catch (PartInitException e) {

			Logger.log(e.getMessage(), e);

		}

	}

}