content/browser/cocoa/system_hotkey_helper_mac.mm

   1 // Copyright 2014 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/browser/cocoa/system_hotkey_helper_mac.h"
   6
   7 #include "base/bind.h"
   8 #include "base/files/file_path.h"
   9 #include "base/mac/foundation_util.h"
  10 #include "base/message_loop/message_loop.h"
  11 #include "base/metrics/histogram.h"
  12 #include "content/browser/cocoa/system_hotkey_map.h"
  13 #include "content/public/browser/browser_thread.h"
  14
  15 namespace {
  16
  17 NSString* kSystemHotkeyPlistExtension =
  18     @"/Preferences/com.apple.symbolichotkeys.plist";
  19
  20 // Amount of time to delay loading the hotkeys in seconds.
  21 const int kLoadHotkeysDelaySeconds = 10;
  22
  23 }  // namespace
  24
  25 namespace content {
  26
  27 // static
  28 SystemHotkeyHelperMac* SystemHotkeyHelperMac::GetInstance() {
  29   return Singleton<SystemHotkeyHelperMac>::get();
  30 }
  31
  32 void SystemHotkeyHelperMac::DeferredLoadSystemHotkeys() {
  33   BrowserThread::PostDelayedTask(
  34       BrowserThread::FILE,
  35       FROM_HERE,
  36       base::Bind(&SystemHotkeyHelperMac::LoadSystemHotkeys,
  37                  base::Unretained(this)),
  38       base::TimeDelta::FromSeconds(kLoadHotkeysDelaySeconds));
  39 }
  40
  41 SystemHotkeyHelperMac::SystemHotkeyHelperMac() : map_(new SystemHotkeyMap) {
  42 }
  43
  44 SystemHotkeyHelperMac::~SystemHotkeyHelperMac() {
  45 }
  46
  47 void SystemHotkeyHelperMac::LoadSystemHotkeys() {
  48   DCHECK_CURRENTLY_ON(BrowserThread::FILE);
  49
  50   std::string library_path(base::mac::GetUserLibraryPath().value());
  51   NSString* expanded_file_path =
  52       [NSString stringWithFormat:@"%s%@",
  53                                  library_path.c_str(),
  54                                  kSystemHotkeyPlistExtension];
  55
  56   // Loads the file into memory.
  57   NSData* data = [NSData dataWithContentsOfFile:expanded_file_path];
  58   // Intentionally create the object with +1 retain count, as FileDidLoad
  59   // will destroy the object.
  60   NSDictionary* dictionary = [SystemHotkeyMap::DictionaryFromData(data) retain];
  61
  62   BrowserThread::PostTask(BrowserThread::UI,
  63                           FROM_HERE,
  64                           base::Bind(&SystemHotkeyHelperMac::FileDidLoad,
  65                                      base::Unretained(this),
  66                                      dictionary));
  67 }
  68
  69 void SystemHotkeyHelperMac::FileDidLoad(NSDictionary* dictionary) {
  70   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  71
  72   bool success = map()->ParseDictionary(dictionary);
  73   UMA_HISTOGRAM_BOOLEAN("OSX.SystemHotkeyMap.LoadSuccess", success);
  74   [dictionary release];
  75 }
  76
  77 }  // namespace content