// Copyright (c) 2012 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/ui/cocoa/extensions/extension_keybinding_registry_cocoa.h"

#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/extensions/api/commands/command_service.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/profiles/profile.h"
#include "content/public/browser/native_web_keyboard_event.h"
#include "content/public/browser/notification_service.h"
#include "extensions/common/extension.h"
#include "extensions/common/manifest_constants.h"

namespace values = extensions::manifest_values;

// static
void extensions::ExtensionKeybindingRegistry::SetShortcutHandlingSuspended(
    bool suspended) {
  ExtensionKeybindingRegistryCocoa::set_shortcut_handling_suspended(suspended);
}

bool ExtensionKeybindingRegistryCocoa::shortcut_handling_suspended_ = false;

ExtensionKeybindingRegistryCocoa::ExtensionKeybindingRegistryCocoa(
    Profile* profile,
    gfx::NativeWindow window,
    ExtensionFilter extension_filter,
    Delegate* delegate)
    : ExtensionKeybindingRegistry(profile, extension_filter, delegate),
      profile_(profile),
      window_(window) {
  Init();
}

ExtensionKeybindingRegistryCocoa::~ExtensionKeybindingRegistryCocoa() {
}

bool ExtensionKeybindingRegistryCocoa::ProcessKeyEvent(
    const content::NativeWebKeyboardEvent& event) {
  if (shortcut_handling_suspended_)
    return false;

  ui::Accelerator accelerator(
      static_cast<ui::KeyboardCode>(event.windowsKeyCode),
      content::GetModifiersFromNativeWebKeyboardEvent(event));
  EventTargets::iterator targets = event_targets_.find(accelerator);
  if (targets == event_targets_.end())
    return false;

  TargetList::const_iterator first_target = targets->second.begin();
  DCHECK(!targets->second.empty());

  std::string extension_id = first_target->first;
  std::string command_name = first_target->second;
  int type = 0;
  if (command_name == values::kPageActionCommandEvent) {
    type = chrome::NOTIFICATION_EXTENSION_COMMAND_PAGE_ACTION_MAC;
  } else if (command_name == values::kBrowserActionCommandEvent) {
    type = chrome::NOTIFICATION_EXTENSION_COMMAND_BROWSER_ACTION_MAC;
  } else if (command_name == values::kScriptBadgeCommandEvent) {
    type = chrome::NOTIFICATION_EXTENSION_COMMAND_SCRIPT_BADGE_MAC;
  } else {
    // Not handled by using notifications. Route it through the Browser Event
    // Router using the base class (it will iterate through all targets).
    return ExtensionKeybindingRegistry::NotifyEventTargets(accelerator);
  }

  // Type != named command, so we need to dispatch this event directly.
  std::pair<const std::string, gfx::NativeWindow> details =
      std::make_pair(extension_id, window_);
  content::NotificationService::current()->Notify(
      type,
      content::Source<Profile>(profile_),
      content::Details<
          std::pair<const std::string, gfx::NativeWindow> >(&details));
  // We expect only one target for these types of events.
  DCHECK_EQ(1u, targets->second.size());
  return true;
}

void ExtensionKeybindingRegistryCocoa::AddExtensionKeybinding(
    const extensions::Extension* extension,
    const std::string& command_name) {
  extensions::CommandService* command_service =
      extensions::CommandService::Get(profile_);
  extensions::CommandMap commands;
  command_service->GetNamedCommands(
          extension->id(),
          extensions::CommandService::ACTIVE_ONLY,
          extensions::CommandService::REGULAR,
          &commands);

  for (extensions::CommandMap::const_iterator iter = commands.begin();
       iter != commands.end(); ++iter) {
    if (!command_name.empty() && (iter->second.command_name() != command_name))
      continue;

    ui::Accelerator accelerator(iter->second.accelerator());
    event_targets_[accelerator].push_back(
        std::make_pair(extension->id(), iter->second.command_name()));
     // Shortcuts except media keys have only one target in the list. See
     // comment about |event_targets_|.
     if (!extensions::CommandService::IsMediaKey(iter->second.accelerator()))
        DCHECK_EQ(1u, event_targets_[iter->second.accelerator()].size());
  }

  // Mac implemenetation behaves like GTK with regards to what is kept in the
  // event_targets_ map, because both GTK and Mac need to keep track of Browser
  // and Page actions, as well as Script Badges.
  extensions::Command browser_action;
  if (command_service->GetBrowserActionCommand(
          extension->id(),
          extensions::CommandService::ACTIVE_ONLY,
          &browser_action,
          NULL)) {
    ui::Accelerator accelerator(browser_action.accelerator());
    event_targets_[accelerator].push_back(
        std::make_pair(extension->id(), browser_action.command_name()));
    // We should have only one target. See comment about |event_targets_|.
    DCHECK_EQ(1u, event_targets_[accelerator].size());
  }

  // Add the Page Action (if any).
  extensions::Command page_action;
  if (command_service->GetPageActionCommand(
          extension->id(),
          extensions::CommandService::ACTIVE_ONLY,
          &page_action,
          NULL)) {
    ui::Accelerator accelerator(page_action.accelerator());
    event_targets_[accelerator].push_back(
        std::make_pair(extension->id(), page_action.command_name()));
    // We should have only one target. See comment about |event_targets_|.
    DCHECK_EQ(1u, event_targets_[accelerator].size());
  }

  // Add the Script Badge (if any).
  extensions::Command script_badge;
  if (command_service->GetScriptBadgeCommand(
          extension->id(),
          extensions::CommandService::ACTIVE_ONLY,
          &script_badge,
          NULL)) {
    ui::Accelerator accelerator(script_badge.accelerator());
    event_targets_[accelerator].push_back(
        std::make_pair(extension->id(), script_badge.command_name()));
    // We should have only one target. See comment about |event_targets_|.
    DCHECK_EQ(1u, event_targets_[accelerator].size());
  }
}

void ExtensionKeybindingRegistryCocoa::RemoveExtensionKeybindingImpl(
    const ui::Accelerator& accelerator,
    const std::string& command_name) {
}