File: GoogleMapAction.cs

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/* GoogleMapAction.cs
 *
 * GNOME Do is the legal property of its developers. Please refer to the
 * COPYRIGHT file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

using System;

using Do.Universe;
using Do.Addins;

namespace Do.Plugins.Universe
{
	/// <summary>
	/// Given an ITextItem, GoogleMapAction will plot its location,
	/// with a modifier item it will plot the route from the item location
	/// to the modifier location
	/// </summary>
	public class GoogleMapAction : AbstractAction
	{
		public GoogleMapAction ()
		{ }
		
		public override string Name {
			get { return "Map"; }
		}
		
		public override string Description
		{
			get { return "Map a location or route in Google maps."; }
		}
		
		public override string Icon
		{
			get { return "applications-internet"; }
		}
		
		public override Type[] SupportedItemTypes
		{
			get {
				return new Type[] {
					typeof (ITextItem),
				};
			}
		}

		public override Type[] SupportedModifierItemTypes
		{
			get {
				return new Type[] {
					typeof (ITextItem),
				};
			}		
		}
				
		public override bool SupportsItem (IItem item)
		{
			string word;

			word = null;
			if (item is ITextItem) {
				word = (item as ITextItem).Text;
			}
			return !string.IsNullOrEmpty (word);
		}
		
		public override IItem[] Perform (IItem[] items, IItem[] modifierItems)
		{
			string expression, url;
			int i = 0;
			foreach (IItem item in items) {
				// Will evaluate to true when modifier item has
				// text, and hence plot a route rather than a single location.
				if (i < modifierItems.Length &&
				    ((modifierItems[i] as ITextItem).Text) != "") {
					expression = "from: "+((item as ITextItem).Text);
					expression = expression + " to: "+((modifierItems[i] as ITextItem).Text);
					url = GoogleMapsURLWithExpression (expression);
				}
				else {
					url = GoogleMapsURLWithExpression ((item as ITextItem).Text);
				}
				Util.Environment.Open (url);
			}
			return null;
		}
		
		string GoogleMapsURLWithExpression (string e)
		{
			return "http://maps.google.com/maps?q=" + (e ?? "")
				.Replace (" ", "+");
		}
		
				
	}
}