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
|
// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/renderer_host/webmenurunner_mac.h"
#include "base/strings/sys_string_conversions.h"
@interface WebMenuRunner (PrivateAPI)
// Worker function used during initialization.
- (void)addItem:(const content::MenuItem&)item;
// A callback for the menu controller object to call when an item is selected
// from the menu. This is not called if the menu is dismissed without a
// selection.
- (void)menuItemSelected:(id)sender;
@end // WebMenuRunner (PrivateAPI)
@implementation WebMenuRunner
- (id)initWithItems:(const std::vector<content::MenuItem>&)items
fontSize:(CGFloat)fontSize
rightAligned:(BOOL)rightAligned {
if ((self = [super init])) {
menu_.reset([[NSMenu alloc] initWithTitle:@""]);
[menu_ setAutoenablesItems:NO];
index_ = -1;
fontSize_ = fontSize;
rightAligned_ = rightAligned;
for (size_t i = 0; i < items.size(); ++i)
[self addItem:items[i]];
}
return self;
}
- (void)addItem:(const content::MenuItem&)item {
if (item.type == content::MenuItem::SEPARATOR) {
[menu_ addItem:[NSMenuItem separatorItem]];
return;
}
NSString* title = base::SysUTF16ToNSString(item.label);
NSMenuItem* menuItem = [menu_ addItemWithTitle:title
action:@selector(menuItemSelected:)
keyEquivalent:@""];
if (!item.tool_tip.empty()) {
NSString* toolTip = base::SysUTF16ToNSString(item.tool_tip);
[menuItem setToolTip:toolTip];
}
[menuItem setEnabled:(item.enabled && item.type != content::MenuItem::GROUP)];
[menuItem setTarget:self];
// Set various alignment/language attributes. Note that many (if not most) of
// these attributes are functional only on 10.6 and above.
base::scoped_nsobject<NSMutableDictionary> attrs(
[[NSMutableDictionary alloc] initWithCapacity:3]);
base::scoped_nsobject<NSMutableParagraphStyle> paragraphStyle(
[[NSMutableParagraphStyle alloc] init]);
[paragraphStyle setAlignment:rightAligned_ ? NSRightTextAlignment
: NSLeftTextAlignment];
NSWritingDirection writingDirection =
item.rtl ? NSWritingDirectionRightToLeft
: NSWritingDirectionLeftToRight;
[paragraphStyle setBaseWritingDirection:writingDirection];
[attrs setObject:paragraphStyle forKey:NSParagraphStyleAttributeName];
if (item.has_directional_override) {
base::scoped_nsobject<NSNumber> directionValue(
[[NSNumber alloc] initWithInteger:
writingDirection + NSTextWritingDirectionOverride]);
base::scoped_nsobject<NSArray> directionArray(
[[NSArray alloc] initWithObjects:directionValue.get(), nil]);
[attrs setObject:directionArray forKey:NSWritingDirectionAttributeName];
}
[attrs setObject:[NSFont menuFontOfSize:fontSize_]
forKey:NSFontAttributeName];
base::scoped_nsobject<NSAttributedString> attrTitle(
[[NSAttributedString alloc] initWithString:title attributes:attrs]);
[menuItem setAttributedTitle:attrTitle];
// We set the title as well as the attributed title here. The attributed title
// will be displayed in the menu, but typeahead will use the non-attributed
// string that doesn't contain any leading or trailing whitespace. This is
// what Apple uses in WebKit as well:
// http://trac.webkit.org/browser/trunk/Source/WebKit2/UIProcess/mac/WebPopupMenuProxyMac.mm#L90
NSCharacterSet* whitespaceSet = [NSCharacterSet whitespaceCharacterSet];
[menuItem setTitle:[title stringByTrimmingCharactersInSet:whitespaceSet]];
[menuItem setTag:[menu_ numberOfItems] - 1];
}
// Reflects the result of the user's interaction with the popup menu. If NO, the
// menu was dismissed without the user choosing an item, which can happen if the
// user clicked outside the menu region or hit the escape key. If YES, the user
// selected an item from the menu.
- (BOOL)menuItemWasChosen {
return menuItemWasChosen_;
}
- (void)menuItemSelected:(id)sender {
menuItemWasChosen_ = YES;
}
- (void)runMenuInView:(NSView*)view
withBounds:(NSRect)bounds
initialIndex:(int)index {
// Set up the button cell, converting to NSView coordinates. The menu is
// positioned such that the currently selected menu item appears over the
// popup button, which is the expected Mac popup menu behavior.
base::scoped_nsobject<NSPopUpButtonCell> cell(
[[NSPopUpButtonCell alloc] initTextCell:@"" pullsDown:NO]);
[cell setMenu:menu_];
// We use selectItemWithTag below so if the index is out-of-bounds nothing
// bad happens.
[cell selectItemWithTag:index];
if (rightAligned_ &&
[cell respondsToSelector:@selector(setUserInterfaceLayoutDirection:)]) {
[cell setUserInterfaceLayoutDirection:
NSUserInterfaceLayoutDirectionRightToLeft];
}
// When popping up a menu near the Dock, Cocoa restricts the menu
// size to not overlap the Dock, with a scroll arrow. Below a
// certain point this doesn't work. At that point the menu is
// popped up above the element, so that the current item can be
// selected without mouse-tracking selecting a different item
// immediately.
//
// Unfortunately, instead of popping up above the passed |bounds|,
// it pops up above the bounds of the view passed to inView:. Use a
// dummy view to fake this out.
base::scoped_nsobject<NSView> dummyView(
[[NSView alloc] initWithFrame:bounds]);
[view addSubview:dummyView];
// Display the menu, and set a flag if a menu item was chosen.
[cell attachPopUpWithFrame:[dummyView bounds] inView:dummyView];
[cell performClickWithFrame:[dummyView bounds] inView:dummyView];
[dummyView removeFromSuperview];
if ([self menuItemWasChosen])
index_ = [cell indexOfSelectedItem];
}
- (void)hide {
[menu_ cancelTracking];
}
- (int)indexOfSelectedItem {
return index_;
}
@end // WebMenuRunner
|
