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      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(BrowserThread::CurrentlyOn(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(BrowserThread::CurrentlyOn(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
     78