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Viewing changes to external/xwt/Xwt.Gtk/Xwt.GtkBackend/LinkLabelBackend.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/LinkLabelBackend.cs
 
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//
 
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// LinkLabelBackend.cs
 
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//
 
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// Author:
 
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//       Jérémie Laval <jeremie.laval@xamarin.com>
 
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//
 
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// Copyright (c) 2012 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 System.Security;
 
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using Xwt;
 
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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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        class LinkLabelBackend : LabelBackend, ILinkLabelBackend
 
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        {
 
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                Uri uri;
 
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                bool ClickEnabled {
 
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                        get; set;
 
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                }
 
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                new ILinkLabelEventSink EventSink {
 
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                        get { return (ILinkLabelEventSink)base.EventSink; }
 
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                }
 
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                public Uri Uri {
 
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                        get {
 
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                                return uri;
 
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                        }
 
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                        set {
 
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                                uri = value;
 
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                                SetMarkup ();
 
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                        }
 
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                }
 
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                public override string Text {
 
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                        get { return base.Text; }
 
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                        set {
 
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                                base.Text = value;
 
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                                SetMarkup ();
 
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                        }
 
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                }
 
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                public LinkLabelBackend ()
 
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                {
 
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                        Label.UseMarkup = true;
 
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                        Label.SetLinkHandler (OpenLink);
 
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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 LinkLabelEvent) {
 
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                                switch ((LinkLabelEvent) eventId) {
 
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                                case LinkLabelEvent.NavigateToUrl:
 
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                                        ClickEnabled = true;
 
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                                        break;
 
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                                }
 
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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 LinkLabelEvent) {
 
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                                switch ((LinkLabelEvent) eventId) {
 
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                                case LinkLabelEvent.NavigateToUrl:
 
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                                        ClickEnabled = false;
 
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                                        break;
 
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                                }
 
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                        }
 
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                }
 
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                void SetMarkup ()
 
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                {
 
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                        var text = Label.Text;
 
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                        string url = string.Format ("<a href=\"{1}\">{0}</a>", SecurityElement.Escape (text), uri != null ? SecurityElement.Escape (uri.ToString ()) : "");
 
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                        Label.Markup = url;
 
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                }
 
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                void OpenLink (string link)
 
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                {
 
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                        if (ClickEnabled) {
 
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                                var uri = !string.IsNullOrEmpty (link)? new Uri (link, UriKind.RelativeOrAbsolute) : null;
 
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                                Xwt.Engine.Toolkit.Invoke (() => {
 
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                                        EventSink.OnNavigateToUrl (uri);
 
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                                });
 
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                        }
 
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                }
 
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        }
 
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}
 
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