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PhotoTagMenu.cs

//
// PhotoTagMenu.cs
//
// Copyright (C) 2004 Novell, Inc.
//
//
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//

using System;
using System.Collections;
using Gtk;

using FSpot;
using Hyena;

public class PhotoTagMenu : Menu {
      public delegate void TagSelectedHandler (Tag t);
      public event TagSelectedHandler TagSelected;

      public PhotoTagMenu () : base () {
      }
      
      protected PhotoTagMenu (IntPtr raw) : base (raw) {}

      public void Populate (Photo [] photos) {
            Hashtable hash = new Hashtable ();
            if (photos != null) {
                  foreach (Photo p in photos) {
                        foreach (Tag t in p.Tags) {
                              if (!hash.Contains (t.Id)) {
                                    hash.Add (t.Id, t);
                              }
                        }
                  }
            }

            foreach (Widget w in this.Children) {
                  w.Destroy ();
            }
            
            if (hash.Count == 0) {
                  /* Fixme this should really set parent menu
                     items insensitve */
                  MenuItem item = new MenuItem (Mono.Unix.Catalog.GetString ("(No Tags)"));
                  this.Append (item);
                  item.Sensitive = false;
                  item.ShowAll ();
                  return;
            }

            foreach (Tag t in hash.Values) {
                  MenuItem item = new TagMenu.TagMenuItem (t);
                  this.Append (item);
                  item.ShowAll ();
                  item.Activated += HandleActivate;
            }
                        
      }

      void HandleActivate (object obj, EventArgs args)
      {
            if (TagSelected != null) {
                  TagMenu.TagMenuItem t = obj as TagMenu.TagMenuItem;
                  if (t != null)
                        TagSelected (t.Value);
                  else 
                        Log.Debug ("Item was not a TagMenuItem");
            }
      }
}

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