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// Copyright (c) 2011 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 "input_method_event_router.h"
#include <algorithm>
#include "base/json/json_writer.h"
#include "base/lazy_instance.h"
#include "base/values.h"
#include "chrome/browser/chromeos/web_socket_proxy_controller.h"
#include "chrome/browser/extensions/extension_event_names.h"
#include "chrome/browser/extensions/extension_event_router.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/profiles/profile.h"
namespace {
// Prefix, which is used by XKB.
const char kXkbPrefix[] = "xkb:";
// Extension ID which is used in browser_tests.
const char kInputMethodTestExtensionID[] = "ilanclmaeigfpnmdlgelmhkpkegdioip";
class InputMethodPrivateExtensionsWhitelist {
public:
InputMethodPrivateExtensionsWhitelist() {
chromeos::FillWithExtensionsIdsWithPrivateAccess(&ids_);
ids_.push_back(kInputMethodTestExtensionID);
std::sort(ids_.begin(), ids_.end());
}
bool HasId(const std::string& id) {
return std::binary_search(ids_.begin(), ids_.end(), id);
}
const std::vector<std::string>& ids() { return ids_; }
private:
std::vector<std::string> ids_;
};
base::LazyInstance<InputMethodPrivateExtensionsWhitelist>
g_input_method_private_extensions_whitelist(base::LINKER_INITIALIZED);
} // namespace
namespace chromeos {
ExtensionInputMethodEventRouter::ExtensionInputMethodEventRouter() {
input_method::InputMethodManager::GetInstance()->AddObserver(this);
}
ExtensionInputMethodEventRouter::~ExtensionInputMethodEventRouter() {
input_method::InputMethodManager::GetInstance()->RemoveObserver(this);
}
void ExtensionInputMethodEventRouter::InputMethodChanged(
input_method::InputMethodManager *manager,
const input_method::InputMethodDescriptor ¤t_input_method,
size_t num_active_input_methods) {
Profile *profile = ProfileManager::GetDefaultProfile();
ExtensionEventRouter *router = profile->GetExtensionEventRouter();
if (!router->HasEventListener(extension_event_names::kOnInputMethodChanged))
return;
ListValue args;
StringValue *input_method_name =
new StringValue(GetInputMethodForXkb(current_input_method.id()));
args.Append(input_method_name);
std::string args_json;
base::JSONWriter::Write(&args, false, &args_json);
const std::vector<std::string>& ids =
g_input_method_private_extensions_whitelist.Get().ids();
for (size_t i = 0; i < ids.size(); ++i) {
// ExtensionEventRoutner will check that the extension is listening for the
// event.
router->DispatchEventToExtension(
ids[i], extension_event_names::kOnInputMethodChanged,
args_json, profile, GURL());
}
}
void ExtensionInputMethodEventRouter::ActiveInputMethodsChanged(
input_method::InputMethodManager *manager,
const input_method::InputMethodDescriptor & current_input_method,
size_t num_active_input_methods) {
}
void ExtensionInputMethodEventRouter::PropertyListChanged(
input_method::InputMethodManager *manager,
const input_method::ImePropertyList & current_ime_properties) {
}
std::string ExtensionInputMethodEventRouter::GetInputMethodForXkb(
const std::string& xkb_id) {
size_t prefix_length = std::string(kXkbPrefix).length();
DCHECK(xkb_id.substr(0, prefix_length) == kXkbPrefix);
return xkb_id.substr(prefix_length);
}
bool ExtensionInputMethodEventRouter::IsExtensionWhitelisted(
const std::string& extension_id) {
return g_input_method_private_extensions_whitelist.Get().HasId(extension_id);
}
} // namespace chromeos
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