src/chrome/browser/extensions/extension_commands_global_registry.cc

   1 // Copyright (c) 2013 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 "chrome/browser/extensions/extension_commands_global_registry.h"
   6
   7 #include "base/lazy_instance.h"
   8 #include "chrome/browser/extensions/api/commands/command_service.h"
   9 #include "chrome/browser/extensions/global_shortcut_listener.h"
  10 #include "extensions/common/extension.h"
  11
  12 namespace extensions {
  13
  14 ExtensionCommandsGlobalRegistry::ExtensionCommandsGlobalRegistry(
  15     content::BrowserContext* context)
  16     : ExtensionKeybindingRegistry(context,
  17                                   ExtensionKeybindingRegistry::ALL_EXTENSIONS,
  18                                   NULL),
  19       browser_context_(context) {
  20   Init();
  21 }
  22
  23 ExtensionCommandsGlobalRegistry::~ExtensionCommandsGlobalRegistry() {
  24   if (!IsEventTargetsEmpty()) {
  25     GlobalShortcutListener* global_shortcut_listener =
  26         GlobalShortcutListener::GetInstance();
  27
  28     // Resume GlobalShortcutListener before we clean up if the shortcut handling
  29     // is currently suspended.
  30     if (global_shortcut_listener->IsShortcutHandlingSuspended())
  31       global_shortcut_listener->SetShortcutHandlingSuspended(false);
  32
  33     global_shortcut_listener->UnregisterAccelerators(this);
  34   }
  35 }
  36
  37 static base::LazyInstance<
  38     BrowserContextKeyedAPIFactory<ExtensionCommandsGlobalRegistry> > g_factory =
  39     LAZY_INSTANCE_INITIALIZER;
  40
  41 // static
  42 BrowserContextKeyedAPIFactory<ExtensionCommandsGlobalRegistry>*
  43 ExtensionCommandsGlobalRegistry::GetFactoryInstance() {
  44   return g_factory.Pointer();
  45 }
  46
  47 // static
  48 ExtensionCommandsGlobalRegistry* ExtensionCommandsGlobalRegistry::Get(
  49     content::BrowserContext* context) {
  50   return BrowserContextKeyedAPIFactory<ExtensionCommandsGlobalRegistry>::Get(
  51       context);
  52 }
  53
  54 // static
  55 void ExtensionCommandsGlobalRegistry::SetShortcutHandlingSuspended(
  56     bool suspended) {
  57   GlobalShortcutListener::GetInstance()->SetShortcutHandlingSuspended(
  58       suspended);
  59 }
  60
  61 void ExtensionCommandsGlobalRegistry::AddExtensionKeybinding(
  62     const extensions::Extension* extension,
  63     const std::string& command_name) {
  64   // This object only handles named commands, not browser/page actions.
  65   if (ShouldIgnoreCommand(command_name))
  66     return;
  67
  68   extensions::CommandService* command_service =
  69       extensions::CommandService::Get(browser_context_);
  70   // Add all the active global keybindings, if any.
  71   extensions::CommandMap commands;
  72   if (!command_service->GetNamedCommands(
  73           extension->id(),
  74           extensions::CommandService::ACTIVE_ONLY,
  75           extensions::CommandService::GLOBAL,
  76           &commands))
  77     return;
  78
  79   extensions::CommandMap::const_iterator iter = commands.begin();
  80   for (; iter != commands.end(); ++iter) {
  81     if (!command_name.empty() && (iter->second.command_name() != command_name))
  82       continue;
  83     const ui::Accelerator& accelerator = iter->second.accelerator();
  84
  85     VLOG(0) << "Adding global keybinding for " << extension->name().c_str()
  86             << " " << command_name.c_str()
  87             << " key: " << accelerator.GetShortcutText();
  88
  89     if (!IsAcceleratorRegistered(accelerator)) {
  90       if (!GlobalShortcutListener::GetInstance()->RegisterAccelerator(
  91               accelerator, this))
  92         continue;
  93     }
  94
  95     AddEventTarget(accelerator, extension->id(), iter->second.command_name());
  96   }
  97 }
  98
  99 void ExtensionCommandsGlobalRegistry::RemoveExtensionKeybindingImpl(
 100     const ui::Accelerator& accelerator,
 101     const std::string& command_name) {
 102   VLOG(0) << "Removing keybinding for " << command_name.c_str();
 103
 104   GlobalShortcutListener::GetInstance()->UnregisterAccelerator(
 105       accelerator, this);
 106 }
 107
 108 void ExtensionCommandsGlobalRegistry::OnKeyPressed(
 109     const ui::Accelerator& accelerator) {
 110   ExtensionKeybindingRegistry::NotifyEventTargets(accelerator);
 111 }
 112
 113 }  // namespace extensions