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// 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/extensions/api/commands/command_service.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/extensions/extension_keybinding_registry.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/extensions/extension_system.h"
#include "chrome/browser/prefs/scoped_user_pref_update.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/chrome_notification_types.h"
#include "chrome/common/pref_names.h"
#include "content/public/browser/notification_service.h"
using extensions::Extension;
namespace {
const char kExtension[] = "extension";
const char kCommandName[] = "command_name";
std::string GetPlatformKeybindingKeyForAccelerator(
const ui::Accelerator& accelerator) {
return extensions::Command::CommandPlatform() + ":" +
UTF16ToUTF8(accelerator.GetShortcutText());
}
} // namespace
namespace extensions {
// static
void CommandService::RegisterUserPrefs(
PrefService* user_prefs) {
user_prefs->RegisterDictionaryPref(prefs::kExtensionKeybindings,
PrefService::SYNCABLE_PREF);
}
CommandService::CommandService(Profile* profile)
: profile_(profile) {
registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_INSTALLED,
content::Source<Profile>(profile));
registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNINSTALLED,
content::Source<Profile>(profile));
}
CommandService::~CommandService() {
}
const extensions::Command* CommandService::GetBrowserActionCommand(
const std::string& extension_id, QueryType type) {
const ExtensionSet* extensions =
ExtensionSystem::Get(profile_)->extension_service()->extensions();
const Extension* extension = extensions->GetByID(extension_id);
CHECK(extension);
const extensions::Command* command = extension->browser_action_command();
if (!command)
return NULL;
if (type == ACTIVE_ONLY &&
!IsKeybindingActive(command->accelerator(),
extension_id,
command->command_name())) {
return NULL;
}
return command;
}
const extensions::Command* CommandService::GetPageActionCommand(
const std::string& extension_id, QueryType type) {
const ExtensionSet* extensions =
ExtensionSystem::Get(profile_)->extension_service()->extensions();
const Extension* extension = extensions->GetByID(extension_id);
CHECK(extension);
const extensions::Command* command = extension->page_action_command();
if (!command)
return NULL;
if (type == ACTIVE_ONLY &&
!IsKeybindingActive(command->accelerator(),
extension_id,
command->command_name())) {
return NULL;
}
return command;
}
extensions::CommandMap CommandService::GetNamedCommands(
const std::string& extension_id, QueryType type) {
const ExtensionSet* extensions =
ExtensionSystem::Get(profile_)->extension_service()->extensions();
const Extension* extension = extensions->GetByID(extension_id);
CHECK(extension);
extensions::CommandMap result;
const extensions::CommandMap& commands = extension->named_commands();
if (commands.empty())
return result;
extensions::CommandMap::const_iterator iter = commands.begin();
for (; iter != commands.end(); ++iter) {
if (type == ACTIVE_ONLY &&
!IsKeybindingActive(iter->second.accelerator(),
extension_id,
iter->second.command_name())) {
continue;
}
result[iter->second.command_name()] = iter->second;
}
return result;
}
bool CommandService::IsKeybindingActive(
const ui::Accelerator& accelerator,
const std::string& extension_id,
const std::string& command_name) const {
CHECK(!extension_id.empty());
CHECK(!command_name.empty());
std::string key = GetPlatformKeybindingKeyForAccelerator(accelerator);
const DictionaryValue* bindings =
profile_->GetPrefs()->GetDictionary(prefs::kExtensionKeybindings);
if (!bindings->HasKey(key))
return false;
DictionaryValue* value = NULL;
if (!bindings->GetDictionary(key, &value))
return false;
std::string id;
if (!value->GetString(kExtension, &id) || id != extension_id)
return false; // Not active for this extension.
std::string command;
if (!value->GetString(kCommandName, &command) || command != command_name)
return false; // Not active for this command.
return true; // We found a match, this one is active.
}
bool CommandService::AddKeybindingPref(
const ui::Accelerator& accelerator,
std::string extension_id,
std::string command_name,
bool allow_overrides) {
DictionaryPrefUpdate updater(profile_->GetPrefs(),
prefs::kExtensionKeybindings);
DictionaryValue* bindings = updater.Get();
std::string key = GetPlatformKeybindingKeyForAccelerator(accelerator);
if (bindings->HasKey(key) && !allow_overrides)
return false; // Already taken.
DictionaryValue* keybinding = new DictionaryValue();
keybinding->SetString(kExtension, extension_id);
keybinding->SetString(kCommandName, command_name);
bindings->Set(key, keybinding);
return true;
}
void CommandService::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
switch (type) {
case chrome::NOTIFICATION_EXTENSION_INSTALLED:
AssignInitialKeybindings(
content::Details<const Extension>(details).ptr());
break;
case chrome::NOTIFICATION_EXTENSION_UNINSTALLED:
RemoveKeybindingPrefs(*content::Details<std::string>(details).ptr());
break;
default:
NOTREACHED();
break;
}
}
void CommandService::AssignInitialKeybindings(const Extension* extension) {
const extensions::CommandMap& commands = extension->named_commands();
extensions::CommandMap::const_iterator iter = commands.begin();
for (; iter != commands.end(); ++iter) {
AddKeybindingPref(iter->second.accelerator(),
extension->id(),
iter->second.command_name(),
false); // Overwriting not allowed.
}
const extensions::Command* browser_action_command =
extension->browser_action_command();
if (browser_action_command) {
AddKeybindingPref(browser_action_command->accelerator(),
extension->id(),
browser_action_command->command_name(),
false); // Overwriting not allowed.
}
const extensions::Command* page_action_command =
extension->page_action_command();
if (page_action_command) {
AddKeybindingPref(page_action_command->accelerator(),
extension->id(),
page_action_command->command_name(),
false); // Overwriting not allowed.
}
}
void CommandService::RemoveKeybindingPrefs(std::string extension_id) {
DictionaryPrefUpdate updater(profile_->GetPrefs(),
prefs::kExtensionKeybindings);
DictionaryValue* bindings = updater.Get();
typedef std::vector<std::string> KeysToRemove;
KeysToRemove keys_to_remove;
for (DictionaryValue::key_iterator it = bindings->begin_keys();
it != bindings->end_keys(); ++it) {
std::string key = *it;
DictionaryValue* item = NULL;
bindings->GetDictionary(key, &item);
std::string extension;
item->GetString(kExtension, &extension);
if (extension == extension_id)
keys_to_remove.push_back(key);
}
for (KeysToRemove::const_iterator it = keys_to_remove.begin();
it != keys_to_remove.end(); ++it) {
bindings->Remove(*it, NULL);
}
}
} // namespace extensions
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