1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
//
// LinkLabelBackend.cs
//
// Author:
// Alex Corrado <corrado@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 AppKit;
using CoreGraphics;
using Foundation;
using Xwt.Backends;
namespace Xwt.Mac
{
public class LinkLabelBackend : LabelBackend, ILinkLabelBackend
{
Uri uri;
new ILinkLabelEventSink EventSink {
get { return (ILinkLabelEventSink)base.EventSink; }
}
public Uri Uri {
get { return uri; }
set {
uri = value;
if (value != null) {
Widget.AccessibilityRole = NSAccessibilityRoles.LinkRole;
Widget.AccessibilityUrl = value;
} else {
Widget.AccessibilityRole = NSAccessibilityRoles.StaticTextRole;
if (Widget.AccessibilityUrl != null)
Widget.AccessibilityUrl = new NSUrl (string.Empty);
}
}
}
public override string Text {
get { return base.Text; }
set {
base.Text = value;
Widget.Cell.AttributedStringValue = GetAttributedString (value);
Widget.AccessibilityTitle = value;
}
}
public LinkLabelBackend () : base (new LinkLabelView ())
{
}
public override void Initialize ()
{
base.Initialize ();
CanGetFocus = true;
Widget.AllowsEditingTextAttributes = true;
}
public override void EnableEvent (object eventId)
{
base.EnableEvent (eventId);
if (eventId is LinkLabelEvent) {
switch ((LinkLabelEvent) eventId) {
case LinkLabelEvent.NavigateToUrl:
((LinkLabelView)Widget).Clicked += HandleClicked;
break;
}
}
}
public override void DisableEvent (object eventId)
{
base.DisableEvent (eventId);
if (eventId is LinkLabelEvent) {
switch ((LinkLabelEvent) eventId) {
case LinkLabelEvent.NavigateToUrl:
((LinkLabelView)Widget).Clicked -= HandleClicked;
break;
}
}
}
void HandleClicked (object sender, EventArgs e)
{
ApplicationContext.InvokeUserCode (() => {
EventSink.OnNavigateToUrl (uri);
});
}
static NSAttributedString GetAttributedString (string text)
{
var attrStr = new NSMutableAttributedString (text);
var range = new NSRange (0, attrStr.Length);
var singleUnderlineStyle = NSNumber.FromInt32 ((int)NSUnderlineStyle.Single);
attrStr.AddAttribute (NSStringAttributeKey.ForegroundColor, Toolkit.CurrentEngine.Defaults.FallbackLinkColor.ToNSColor (), range);
attrStr.AddAttribute (NSStringAttributeKey.UnderlineStyle, singleUnderlineStyle, range);
return attrStr;
}
bool canGetFocus;
public override bool CanGetFocus
{
get { return canGetFocus; }
set { canGetFocus = value; }
}
public override void SetFocus()
{
if (Widget.Window != null && CanGetFocus)
Widget.Window.MakeFirstResponder(Widget);
}
public override bool HasFocus
{
get {
return Widget.Window != null && Widget.Window.FirstResponder == Widget;
}
}
}
class LinkLabelView : TextFieldView
{
public event EventHandler Clicked;
public LinkLabelView ()
{
FocusRingType = NSFocusRingType.Default;
}
public override void ResetCursorRects ()
{
AddCursorRect (Bounds, NSCursor.PointingHandCursor);
}
public override void MouseUp (NSEvent theEvent)
{
// Unfortunately, cocoa calls MouseUp even if the mouse is not still over this control so we have to check that
var location = ConvertPointFromView (theEvent.LocationInWindow, null);
if (Clicked != null && IsMouseInRect (location, Cell.DrawingRectForBounds (Bounds)))
Clicked (this, EventArgs.Empty);
}
public override void KeyDown (NSEvent theEvent)
{
var key = theEvent.ToXwtKeyEventArgs ().Key;
if ((key == Key.Return || key == Key.Space) && Clicked != null)
Clicked(this, EventArgs.Empty);
else
base.KeyDown(theEvent);
}
public override bool AcceptsFirstResponder ()
{
return Backend?.CanGetFocus ?? false;
}
public override CGRect FocusRingMaskBounds { get { return Bounds; } }
public override void DrawFocusRingMask ()
{
NSGraphicsContext.CurrentContext.GraphicsPort.FillRect (Bounds);
}
}
}
|
