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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/base/ime/ash/component_extension_ime_manager.h"
#include <stddef.h>
#include <utility>
#include "base/command_line.h"
#include "base/strings/string_util.h"
#include "base/trace_event/trace_event.h"
#include "ui/base/ime/ash/extension_ime_util.h"
namespace ash {
namespace {
// Gets the input method category according to the given input method id.
// This is used for sorting a list of input methods.
int GetInputMethodCategory(const std::string& id) {
const std::string engine_id =
extension_ime_util::GetComponentIDByInputMethodID(id);
if (engine_id.starts_with("xkb:")) {
return 0;
}
if (engine_id.starts_with("vkd_")) {
return 1;
}
if (engine_id.find("-t-i0-") != std::string::npos &&
!engine_id.starts_with("zh-")) {
return 2;
}
return 3;
}
bool InputMethodCompare(const input_method::InputMethodDescriptor& im1,
const input_method::InputMethodDescriptor& im2) {
return GetInputMethodCategory(im1.id()) < GetInputMethodCategory(im2.id());
}
} // namespace
ComponentExtensionEngine::ComponentExtensionEngine() = default;
ComponentExtensionEngine::ComponentExtensionEngine(
const ComponentExtensionEngine& other) = default;
ComponentExtensionEngine::~ComponentExtensionEngine() = default;
ComponentExtensionIME::ComponentExtensionIME() = default;
ComponentExtensionIME::ComponentExtensionIME(
const ComponentExtensionIME& other) = default;
ComponentExtensionIME::~ComponentExtensionIME() = default;
ComponentExtensionIMEManager::ComponentExtensionIMEManager(
std::unique_ptr<ComponentExtensionIMEManagerDelegate> delegate)
: delegate_(std::move(delegate)) {
// Creates internal mapping between input method id and engine components.
std::vector<ComponentExtensionIME> ext_list = delegate_->ListIME();
for (const auto& ext : ext_list) {
bool extension_exists = IsAllowlistedExtension(ext.id);
if (!extension_exists) {
component_extension_imes_[ext.id] = ext;
}
for (const auto& ime : ext.engines) {
const std::string input_method_id =
extension_ime_util::GetComponentInputMethodID(ext.id, ime.engine_id);
if (extension_exists && !IsAllowlisted(input_method_id)) {
component_extension_imes_[ext.id].engines.push_back(ime);
}
input_method_id_set_.insert(input_method_id);
}
}
}
ComponentExtensionIMEManager::~ComponentExtensionIMEManager() = default;
bool ComponentExtensionIMEManager::LoadComponentExtensionIME(
content::BrowserContext* context,
const std::string& input_method_id,
std::set<std::string>* extension_loaded) {
TRACE_EVENT0("ime",
"ComponentExtensionIMEManager::LoadComponentExtensionIME");
ComponentExtensionIME ime;
if (FindEngineEntry(input_method_id, &ime)) {
bool will_load = extension_loaded == nullptr;
if (!will_load &&
extension_loaded->find(ime.id) == extension_loaded->end()) {
extension_loaded->insert(ime.id);
will_load = true;
}
if (will_load) {
delegate_->Load(context, ime.id, ime.manifest, ime.path);
}
return will_load;
}
return false;
}
bool ComponentExtensionIMEManager::IsAllowlisted(
const std::string& input_method_id) {
return input_method_id_set_.find(input_method_id) !=
input_method_id_set_.end();
}
bool ComponentExtensionIMEManager::IsAllowlistedExtension(
const std::string& extension_id) {
return component_extension_imes_.find(extension_id) !=
component_extension_imes_.end();
}
input_method::InputMethodDescriptors
ComponentExtensionIMEManager::GetAllIMEAsInputMethodDescriptor() {
input_method::InputMethodDescriptors result;
for (std::map<std::string, ComponentExtensionIME>::const_iterator it =
component_extension_imes_.begin();
it != component_extension_imes_.end(); ++it) {
const ComponentExtensionIME& ext = it->second;
for (size_t j = 0; j < ext.engines.size(); ++j) {
const ComponentExtensionEngine& ime = ext.engines[j];
const std::string input_method_id =
extension_ime_util::GetComponentInputMethodID(ext.id, ime.engine_id);
result.push_back(input_method::InputMethodDescriptor(
input_method_id, ime.display_name, ime.indicator, ime.layout,
ime.language_codes,
// Enables extension based xkb keyboards on login screen.
extension_ime_util::IsKeyboardLayoutExtension(input_method_id) &&
delegate_->IsInLoginLayoutAllowlist(ime.layout),
ime.options_page_url, ime.input_view_url, ime.handwriting_language));
}
}
std::stable_sort(result.begin(), result.end(), InputMethodCompare);
return result;
}
input_method::InputMethodDescriptors
ComponentExtensionIMEManager::GetXkbIMEAsInputMethodDescriptor() {
input_method::InputMethodDescriptors result;
const input_method::InputMethodDescriptors& descriptors =
GetAllIMEAsInputMethodDescriptor();
for (const auto& descriptor : descriptors) {
if (extension_ime_util::IsKeyboardLayoutExtension(descriptor.id())) {
result.push_back(descriptor);
}
}
return result;
}
bool ComponentExtensionIMEManager::FindEngineEntry(
const std::string& input_method_id,
ComponentExtensionIME* out_extension) {
if (!IsAllowlisted(input_method_id)) {
return false;
}
std::string extension_id =
extension_ime_util::GetExtensionIDFromInputMethodID(input_method_id);
auto it = component_extension_imes_.find(extension_id);
if (it == component_extension_imes_.end()) {
return false;
}
if (out_extension) {
*out_extension = it->second;
}
return true;
}
} // namespace ash
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