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
|
// 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.
#include "chrome/browser/media/media_internals.h"
#include "base/memory/scoped_ptr.h"
#include "base/string16.h"
#include "base/stringprintf.h"
#include "chrome/browser/media/media_internals_observer.h"
#include "content/browser/browser_thread.h"
#include "content/browser/webui/web_ui.h"
// The names of the javascript functions to call with updates.
static const char kDeleteItemFunction[] = "onItemDeleted";
static const char kAudioUpdateFunction[] = "onAudioUpdate";
static const char kSendEverythingFunction[] = "onReceiveEverything";
MediaInternals::~MediaInternals() {}
void MediaInternals::OnDeleteAudioStream(void* host, int stream_id) {
std::string stream = base::StringPrintf("audio_streams.%p:%d",
host, stream_id);
DeleteItem(stream);
}
void MediaInternals::OnSetAudioStreamPlaying(
void* host, int stream_id, bool playing) {
UpdateAudioStream(host, stream_id,
"playing", Value::CreateBooleanValue(playing));
}
void MediaInternals::OnSetAudioStreamStatus(
void* host, int stream_id, const std::string& status) {
UpdateAudioStream(host, stream_id,
"status", Value::CreateStringValue(status));
}
void MediaInternals::OnSetAudioStreamVolume(
void* host, int stream_id, double volume) {
UpdateAudioStream(host, stream_id,
"volume", Value::CreateDoubleValue(volume));
}
void MediaInternals::AddUI(MediaInternalsObserver* ui) {
observers_->AddObserver(ui);
}
void MediaInternals::RemoveUI(MediaInternalsObserver* ui) {
observers_->RemoveObserver(ui);
}
void MediaInternals::SendEverything() {
SendUpdate(kSendEverythingFunction, &data_);
}
MediaInternals::MediaInternals()
: observers_(new ObserverListThreadSafe<MediaInternalsObserver>()) {}
void MediaInternals::UpdateAudioStream(
void* host, int stream_id, const std::string& property, Value* value) {
std::string stream = base::StringPrintf("audio_streams.%p:%d",
host, stream_id);
UpdateItem(kAudioUpdateFunction, stream, property, value);
}
void MediaInternals::DeleteItem(const std::string& item) {
data_.Remove(item, NULL);
scoped_ptr<Value> value(Value::CreateStringValue(item));
SendUpdate(kDeleteItemFunction, value.get());
}
void MediaInternals::UpdateItem(
const std::string& update_fn, const std::string& id,
const std::string& property, Value* value) {
DictionaryValue* item_properties;
if (!data_.GetDictionary(id, &item_properties)) {
item_properties = new DictionaryValue();
data_.Set(id, item_properties);
item_properties->SetString("id", id);
}
item_properties->Set(property, value);
SendUpdate(update_fn, item_properties);
}
void MediaInternals::SendUpdate(const std::string& function, Value* value) {
scoped_ptr<std::vector<const Value*> > args(new std::vector<const Value*>());
args->push_back(value);
string16 update = WebUI::GetJavascriptCall(function, *args.get());
observers_->Notify(&MediaInternalsObserver::OnUpdate, update);
}
|
