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