1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "content/public/browser/font_list_async.h"
6
7 #include "base/bind.h"
8 #include "base/values.h"
9 #include "content/common/font_list.h"
10 #include "content/public/browser/browser_thread.h"
11
12 namespace content {
13
14 namespace {
15
16 // Just executes the given callback with the parameter.
ReturnFontListToOriginalThread(const base::Callback<void (scoped_ptr<base::ListValue>)> & callback,scoped_ptr<base::ListValue> result)17 void ReturnFontListToOriginalThread(
18 const base::Callback<void(scoped_ptr<base::ListValue>)>& callback,
19 scoped_ptr<base::ListValue> result) {
20 callback.Run(result.Pass());
21 }
22
GetFontListInBlockingPool(BrowserThread::ID calling_thread_id,const base::Callback<void (scoped_ptr<base::ListValue>)> & callback)23 void GetFontListInBlockingPool(
24 BrowserThread::ID calling_thread_id,
25 const base::Callback<void(scoped_ptr<base::ListValue>)>& callback) {
26 scoped_ptr<base::ListValue> result(GetFontList_SlowBlocking());
27 BrowserThread::PostTask(calling_thread_id, FROM_HERE,
28 base::Bind(&ReturnFontListToOriginalThread, callback,
29 base::Passed(&result)));
30 }
31
32 } // namespace
33
GetFontListAsync(const base::Callback<void (scoped_ptr<base::ListValue>)> & callback)34 void GetFontListAsync(
35 const base::Callback<void(scoped_ptr<base::ListValue>)>& callback) {
36 BrowserThread::ID id;
37 bool well_known_thread = BrowserThread::GetCurrentThreadIdentifier(&id);
38 DCHECK(well_known_thread)
39 << "Can only call GetFontList from a well-known thread.";
40
41 BrowserThread::PostBlockingPoolSequencedTask(
42 kFontListSequenceToken,
43 FROM_HERE,
44 base::Bind(&GetFontListInBlockingPool, id, callback));
45 }
46
47 } // namespace content
48