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
|
// Copyright (c) 2012 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.
#import "chrome/browser/ui/cocoa/url_drop_target.h"
#include "base/basictypes.h"
#include "chrome/browser/ui/cocoa/drag_util.h"
#import "third_party/mozilla/NSPasteboard+Utils.h"
#include "url/gurl.h"
namespace {
// Mac WebKit uses this type, declared in
// WebKit/mac/History/WebURLsWithTitles.h.
NSString* const kCrWebURLsWithTitlesPboardType =
@"WebURLsWithTitlesPboardType";
} // namespace
@interface URLDropTargetHandler(Private)
// Gets the appropriate drag operation given the |NSDraggingInfo|.
- (NSDragOperation)getDragOperation:(id<NSDraggingInfo>)sender;
// Tell the window controller to hide the drop indicator.
- (void)hideIndicator;
@end // @interface URLDropTargetHandler(Private)
@implementation URLDropTargetHandler
+ (NSArray*)handledDragTypes {
return [NSArray arrayWithObjects:kCrWebURLsWithTitlesPboardType,
NSURLPboardType,
NSStringPboardType,
NSFilenamesPboardType,
nil];
}
- (id)initWithView:(NSView<URLDropTarget>*)view {
if ((self = [super init])) {
view_ = view;
[view_ registerForDraggedTypes:[URLDropTargetHandler handledDragTypes]];
}
return self;
}
// The following four methods implement parts of the |NSDraggingDestination|
// protocol, which the owner should "forward" to its |URLDropTargetHandler|
// (us).
- (NSDragOperation)draggingEntered:(id<NSDraggingInfo>)sender {
if ([[view_ urlDropController] isUnsupportedDropData:sender])
return NSDragOperationNone;
return [self getDragOperation:sender];
}
- (NSDragOperation)draggingUpdated:(id<NSDraggingInfo>)sender {
NSDragOperation dragOp = NSDragOperationNone;
BOOL showIndicator = NO;
// Show indicator for drag data supported for tab contents as well as for
// local file drags that may not be viewable in tab contents, but should
// still trigger hover tab selection.
if (![[view_ urlDropController] isUnsupportedDropData:sender]) {
dragOp = [self getDragOperation:sender];
if (dragOp == NSDragOperationCopy)
showIndicator = YES;
} else if (!drag_util::GetFileURLFromDropData(sender).is_empty()) {
showIndicator = YES;
}
if (showIndicator) {
// Just tell the window controller to update the indicator.
NSPoint hoverPoint = [view_ convertPoint:[sender draggingLocation]
fromView:nil];
[[view_ urlDropController] indicateDropURLsInView:view_ at:hoverPoint];
}
return dragOp;
}
- (void)draggingExited:(id<NSDraggingInfo>)sender {
[self hideIndicator];
}
- (BOOL)performDragOperation:(id<NSDraggingInfo>)sender {
[self hideIndicator];
NSPasteboard* pboard = [sender draggingPasteboard];
NSArray* supportedTypes = [NSArray arrayWithObjects:NSStringPboardType, nil];
NSString* bestType = [pboard availableTypeFromArray:supportedTypes];
NSPoint dropPoint =
[view_ convertPoint:[sender draggingLocation] fromView:nil];
// Tell the window controller about the dropped URL(s).
if ([pboard containsURLData]) {
NSArray* urls = nil;
NSArray* titles; // discarded
[pboard getURLs:&urls andTitles:&titles convertingFilenames:YES];
if ([urls count]) {
[[view_ urlDropController] dropURLs:urls inView:view_ at:dropPoint];
return YES;
}
} else if (NSString* text = [pboard stringForType:bestType]) {
// This does not include any URLs, so treat it as plain text if we can
// get NSString.
[[view_ urlDropController] dropText:text inView:view_ at:dropPoint];
return YES;
}
return NO;
}
@end // @implementation URLDropTargetHandler
@implementation URLDropTargetHandler(Private)
- (NSDragOperation)getDragOperation:(id<NSDraggingInfo>)sender {
NSPasteboard* pboard = [sender draggingPasteboard];
NSArray *supportedTypes = [NSArray arrayWithObjects:NSStringPboardType, nil];
NSString *bestType = [pboard availableTypeFromArray:supportedTypes];
if (![pboard containsURLData] && ![pboard stringForType:bestType])
return NSDragOperationNone;
// Only allow the copy operation.
return [sender draggingSourceOperationMask] & NSDragOperationCopy;
}
- (void)hideIndicator {
[[view_ urlDropController] hideDropURLsIndicatorInView:view_];
}
@end // @implementation URLDropTargetHandler(Private)
|
