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
|
// Copyright (c) 2011 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/renderer_host/text_input_client_mac.h"
#include "base/memory/singleton.h"
#include "base/metrics/histogram.h"
#include "base/time.h"
#include "chrome/common/text_input_client_messages.h"
#include "content/browser/renderer_host/render_widget_host.h"
// The amount of time in milliseconds that the browser process will wait for a
// response from the renderer.
// TODO(rsesek): Using the histogram data, find the best upper-bound for this
// value.
const float kWaitTimeout = 1500;
TextInputClientMac::TextInputClientMac()
: character_index_(NSNotFound),
lock_(),
condition_(&lock_) {
}
TextInputClientMac::~TextInputClientMac() {
}
// static
TextInputClientMac* TextInputClientMac::GetInstance() {
return Singleton<TextInputClientMac>::get();
}
NSUInteger TextInputClientMac::GetCharacterIndexAtPoint(RenderWidgetHost* rwh,
gfx::Point point) {
base::TimeTicks start = base::TimeTicks::Now();
BeforeRequest();
rwh->Send(new TextInputClientMsg_CharacterIndexForPoint(rwh->routing_id(),
point));
condition_.TimedWait(base::TimeDelta::FromMilliseconds(kWaitTimeout));
AfterRequest();
base::TimeDelta delta(base::TimeTicks::Now() - start);
UMA_HISTOGRAM_TIMES("TextInputClient.CharacterIndex",
delta * base::Time::kMicrosecondsPerMillisecond);
return character_index_;
}
NSRect TextInputClientMac::GetFirstRectForRange(RenderWidgetHost* rwh,
NSRange range) {
base::TimeTicks start = base::TimeTicks::Now();
BeforeRequest();
rwh->Send(new TextInputClientMsg_FirstRectForCharacterRange(rwh->routing_id(),
ui::Range(range)));
condition_.TimedWait(base::TimeDelta::FromMilliseconds(kWaitTimeout));
AfterRequest();
base::TimeDelta delta(base::TimeTicks::Now() - start);
UMA_HISTOGRAM_TIMES("TextInputClient.FirstRect",
delta * base::Time::kMicrosecondsPerMillisecond);
return first_rect_;
}
NSAttributedString* TextInputClientMac::GetAttributedSubstringFromRange(
RenderWidgetHost* rwh,
NSRange range) {
base::TimeTicks start = base::TimeTicks::Now();
BeforeRequest();
rwh->Send(new TextInputClientMsg_StringForRange(rwh->routing_id(),
ui::Range(range)));
condition_.TimedWait(base::TimeDelta::FromMilliseconds(kWaitTimeout));
AfterRequest();
base::TimeDelta delta(base::TimeTicks::Now() - start);
UMA_HISTOGRAM_TIMES("TextInputClient.Substring",
delta * base::Time::kMicrosecondsPerMillisecond);
// Lookup.framework calls this method repeatedly and expects that repeated
// calls don't deallocate previous results immediately. Returning an
// autoreleased string is better convention anyway.
return [[substring_.get() retain] autorelease];
}
void TextInputClientMac::SetCharacterIndexAndSignal(NSUInteger index) {
lock_.Acquire();
character_index_ = index;
lock_.Release();
condition_.Signal();
}
void TextInputClientMac::SetFirstRectAndSignal(NSRect first_rect) {
lock_.Acquire();
first_rect_ = first_rect;
lock_.Release();
condition_.Signal();
}
void TextInputClientMac::SetSubstringAndSignal(NSAttributedString* string) {
lock_.Acquire();
substring_.reset([string copy]);
lock_.Release();
condition_.Signal();
}
void TextInputClientMac::BeforeRequest() {
base::TimeTicks start = base::TimeTicks::Now();
lock_.Acquire();
base::TimeDelta delta(base::TimeTicks::Now() - start);
UMA_HISTOGRAM_TIMES("TextInputClient.LockWait",
delta * base::Time::kMicrosecondsPerMillisecond);
character_index_ = NSNotFound;
first_rect_ = NSZeroRect;
substring_.reset();
}
void TextInputClientMac::AfterRequest() {
lock_.Release();
}
|
