/*******************************************************************************
 *  Copyright (c) 2012 Google, Inc.
 *  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:
 *  Google, Inc. - initial API and implementation
 *******************************************************************************/
package com.windowtester.runtime.swt.internal.finder.eclipse.views;

import org.eclipse.ui.views.IViewCategory;
import org.eclipse.ui.views.IViewDescriptor;
import org.eclipse.ui.views.IViewRegistry;

import com.windowtester.runtime.swt.internal.finder.eclipse.WorkbenchFinder;
import com.windowtester.runtime.swt.internal.finder.eclipse.views.ViewFinder.IViewMatcher;

/**
 * A helper for navigating and exploring views.
 */
public class ViewExplorer {

	public void spelunk() {
		IViewDescriptor[] views = getViews();
		for (int i = 0; i < views.length; i++) {
			IViewDescriptor view = views[i];
//			System.out.println(Arrays.toString(view.getCategoryPath()));
			System.out.println(view);
			System.out.println(findCategoryPath(view));
			System.out.println("----");
		}
		
	}


	private IViewDescriptor[] getViews() {
		return getViewRegistry().getViews();
	}

	
	public String findCategory(String viewName) {
		return findCategoryPath(findView(viewName));
		
	}

	
	public String findCategoryPath(IViewDescriptor view) {
		if (view == null)
			return null;
		IViewCategory[] categories = getViewRegistry().getCategories();
		for (int i = 0; i < categories.length; i++) {
			IViewCategory category = categories[i];
			IViewDescriptor[] views = category.getViews();
			for (int j = 0; j < views.length; j++) {
				IViewDescriptor candidateView = views[i];
				if (view == candidateView)
					return category.getLabel();
			}
		}
		// TODO Auto-generated method stub
		return null;
	}


	private IViewRegistry getViewRegistry() {
		return WorkbenchFinder.getWorkbench().getViewRegistry();
	}


	public IViewDescriptor findView(String name) {
		if (name == null)
			return null;
		IViewDescriptor[] views = getViews();
		for (int i = 0; i < views.length; i++) {
			IViewDescriptor view = views[i];
			String label = view.getLabel();
			if (label == null)
				continue;
			if (name.equals(view.getLabel()))
				return view;
		}
		return null;
	}
	



	public IViewDescriptor findMatchInRegistry(IViewMatcher matcher) {
		IViewDescriptor[] views = getViews();
		for (int i = 0; i < views.length; i++) {
			IViewDescriptor view = views[i];
			if (matcher.matches(view))
				return view;
		}
		return null;
	}






}