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Viewing changes to external/xwt/Xwt.Gtk/Xwt.GtkBackend/ComboBoxBackend.cs

  • Committer: Package Import Robot
  • Author(s): Jo Shields
  • Date: 2013-05-12 09:46:03 UTC
  • mto: This revision was merged to the branch mainline in revision 29.
  • Revision ID: package-import@ubuntu.com-20130512094603-mad323bzcxvmcam0
Tags: upstream-4.0.5+dfsg
Import upstream version 4.0.5+dfsg

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external/xwt/Xwt.Gtk/Xwt.GtkBackend/ComboBoxBackend.cs
 
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// 
 
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// ComboBoxBackend.cs
 
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//  
 
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// Author:
 
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//       Lluis Sanchez <lluis@xamarin.com>
 
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// 
 
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// Copyright (c) 2011 Xamarin Inc
 
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// 
 
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// Permission is hereby granted, free of charge, to any person obtaining a copy
 
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// of this software and associated documentation files (the "Software"), to deal
 
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// in the Software without restriction, including without limitation the rights
 
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 
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// copies of the Software, and to permit persons to whom the Software is
 
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// furnished to do so, subject to the following conditions:
 
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// 
 
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// The above copyright notice and this permission notice shall be included in
 
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// all copies or substantial portions of the Software.
 
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// 
 
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 
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// THE SOFTWARE.
 
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using System;
 
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using Xwt.Backends;
 
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using Xwt.Engine;
 
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namespace Xwt.GtkBackend
 
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{
 
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        public class ComboBoxBackend: WidgetBackend, IComboBoxBackend, ICellRendererTarget
 
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        {
 
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                public ComboBoxBackend ()
 
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                {
 
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                }
 
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                public override void Initialize ()
 
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                {
 
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                        Widget = (Gtk.ComboBox) CreateWidget ();
 
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                        var cr = new Gtk.CellRendererText ();
 
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                        Widget.PackStart (cr, false);
 
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                        Widget.AddAttribute (cr, "text", 0);
 
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                        Widget.Show ();
 
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                        Widget.RowSeparatorFunc = IsRowSeparator;
 
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                }
 
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                protected virtual Gtk.Widget CreateWidget ()
 
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                {
 
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                        return new Gtk.ComboBox ();
 
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                }
 
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                protected new Gtk.ComboBox Widget {
 
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                        get { return (Gtk.ComboBox)base.Widget; }
 
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                        set { base.Widget = value; }
 
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                }
 
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                protected new IComboBoxEventSink EventSink {
 
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                        get { return (IComboBoxEventSink)base.EventSink; }
 
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                }
 
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                bool IsRowSeparator (Gtk.TreeModel model, Gtk.TreeIter iter)
 
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                {
 
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                        Gtk.TreePath path = model.GetPath (iter);
 
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                        bool res = false;
 
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                        Toolkit.Invoke (delegate {
 
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                                res = EventSink.RowIsSeparator (path.Indices[0]);
 
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                        });
 
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                        return res;
 
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                }
 
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                public override void EnableEvent (object eventId)
 
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                {
 
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                        base.EnableEvent (eventId);
 
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                        if (eventId is ComboBoxEvent) {
 
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                                if ((ComboBoxEvent)eventId == ComboBoxEvent.SelectionChanged)
 
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                                        Widget.Changed += HandleChanged;
 
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                        }
 
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                }
 
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                public override void DisableEvent (object eventId)
 
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                {
 
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                        base.DisableEvent (eventId);
 
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                        if (eventId is ComboBoxEvent) {
 
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                                if ((ComboBoxEvent)eventId == ComboBoxEvent.SelectionChanged)
 
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                                        Widget.Changed -= HandleChanged;
 
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                        }
 
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                }
 
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                void HandleChanged (object sender, EventArgs e)
 
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                {
 
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                        Toolkit.Invoke (delegate {
 
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                                EventSink.OnSelectionChanged ();
 
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                        });
 
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                }
 
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                #region IComboBoxBackend implementation
 
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                public void SetViews (CellViewCollection views)
 
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                {
 
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                        Widget.Clear ();
 
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                        foreach (var v in views)
 
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                                CellUtil.CreateCellRenderer (this, null, v);
 
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                }
 
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                public void SetSource (IListDataSource source, IBackend sourceBackend)
 
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                {
 
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                        ListStoreBackend b = sourceBackend as ListStoreBackend;
 
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                        if (b == null) {
 
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                                CustomListModel model = new CustomListModel (source, Widget);
 
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                                Widget.Model = model.Store;
 
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                        } else
 
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                                Widget.Model = b.Store;
 
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                }
 
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                public int SelectedRow {
 
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                        get {
 
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                                return Widget.Active;
 
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                        }
 
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                        set {
 
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                                Widget.Active = value;
 
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                        }
 
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                }
 
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                #endregion
 
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                #region ICellRendererTarget implementation
 
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                public void PackStart (object target, Gtk.CellRenderer cr, bool expand)
 
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                {
 
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                        Widget.PackStart (cr, expand);
 
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                }
 
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                public void PackEnd (object target, Gtk.CellRenderer cr, bool expand)
 
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                {
 
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                        Widget.PackEnd (cr, expand);
 
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                }
 
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                public void AddAttribute (object target, Gtk.CellRenderer cr, string field, int column)
 
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                {
 
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                        Widget.AddAttribute (cr, field, column);
 
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                }
 
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                #endregion
 
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        }
 
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}
 
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