Remove virtual keyboard support.

chrome/browser/chromeos/input_method/virtual_keyboard_selector.cc

-// 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/chromeos/input_method/virtual_keyboard_selector.h"
-
-#include "base/logging.h"
-#include "base/stl_util.h"
-
-namespace {
-
-const char kDefaultURLPath[] = "index.html";
-const size_t kDefaultURLPathLen = arraysize(kDefaultURLPath) - 1;
-
-namespace ime = ::chromeos::input_method;
-
-// Selects and returns a virtual keyboard extension from |keyboards| which
-// supports the |layout|.
-const ime::VirtualKeyboard* SelectVirtualKeyboardInternal(
-    const std::list<const ime::VirtualKeyboard*>& keyboards,
-    const std::string& layout) {
-  for (std::list<const ime::VirtualKeyboard*>::const_iterator iter =
-           keyboards.begin(); iter != keyboards.end(); ++iter) {
-    const ime::VirtualKeyboard* keyboard = *iter;
-    if (keyboard->IsLayoutSupported(layout))
-      return keyboard;
-  }
-  return NULL;
-}
-
-}  // namespace
-
-namespace chromeos {
-namespace input_method {
-
-VirtualKeyboard::VirtualKeyboard(const GURL& url,
-                                 const std::string& name,
-                                 const std::set<std::string>& supported_layouts,
-                                 bool is_system)
-    : url_(url),
-      name_(name),
-      supported_layouts_(supported_layouts),
-      is_system_(is_system) {
-}
-
-VirtualKeyboard::~VirtualKeyboard() {
-}
-
-GURL VirtualKeyboard::GetURLForLayout(const std::string& layout) const {
-  if (layout.empty()) {
-    return url_;
-  }
-  url_canon::Replacements<char> replacements;
-  replacements.SetPath(
-      kDefaultURLPath, url_parse::Component(0, kDefaultURLPathLen));
-  // TODO(yusukes): would be better to URL-encode the |layout|?
-  replacements.SetRef(layout.c_str(), url_parse::Component(0, layout.length()));
-  return url_.ReplaceComponents(replacements);
-}
-
-bool VirtualKeyboard::IsLayoutSupported(const std::string& layout) const {
-  return supported_layouts_.count(layout) > 0;
-}
-
-VirtualKeyboardSelector::VirtualKeyboardSelector()
-    : current_(NULL) {
-}
-
-VirtualKeyboardSelector::~VirtualKeyboardSelector() {
-  STLDeleteElements(&keyboards_);
-  STLDeleteElements(&system_keyboards_);
-}
-
-bool VirtualKeyboardSelector::AddVirtualKeyboard(
-    const GURL& url,
-    const std::string& name,
-    const std::set<std::string>& supported_layouts,
-    bool is_system) {
-  if (url_to_keyboard_.count(url))
-    return false;  // the URL is already in use.
-
-  const VirtualKeyboard* new_keyboard = new VirtualKeyboard(url,
-                                                            name,
-                                                            supported_layouts,
-                                                            is_system);
-  if (is_system) {
-    system_keyboards_.push_front(new_keyboard);
-  } else {
-    keyboards_.push_front(new_keyboard);
-  }
-
-  url_to_keyboard_.insert(std::make_pair(url, new_keyboard));
-  std::set<std::string>::const_iterator layout_iter;
-  for (layout_iter = new_keyboard->supported_layouts().begin();
-       layout_iter != new_keyboard->supported_layouts().end();
-       ++layout_iter) {
-    const std::string& layout = *layout_iter;
-    layout_to_keyboard_.insert(std::make_pair(layout, new_keyboard));
-  }
-
-  return true;
-}
-
-const VirtualKeyboard* VirtualKeyboardSelector::SelectVirtualKeyboard(
-    const std::string& layout) {
-  if (layout.empty()) {
-    DVLOG(1) << "No layout is specified";
-    return NULL;
-  }
-
-  // First, check the user pref.
-  std::map<std::string, const VirtualKeyboard*>::const_iterator iter =
-      user_preference_.find(layout);
-  if (iter != user_preference_.end() &&
-      iter->second->IsLayoutSupported(layout)) {
-    current_ = iter->second;
-    return current_;
-  }
-
-  // Second, check whether the current keyboard supports the layout.
-  if (current_ && current_->IsLayoutSupported(layout)) {
-    return current_;
-  }
-
-  const VirtualKeyboard* keyboard =
-      SelectVirtualKeyboardWithoutPreferences(layout);
-  if (!keyboard) {
-    DVLOG(1) << "No virtual keyboard for " << layout << " is found";
-    return NULL;
-  }
-
-  current_ = keyboard;
-  return keyboard;
-}
-
-bool VirtualKeyboardSelector::SetUserPreference(
-    const std::string& layout, const GURL& url) {
-  std::map<GURL, const VirtualKeyboard*>::const_iterator iter =
-      url_to_keyboard_.find(url);
-  if (iter == url_to_keyboard_.end()) {
-    DVLOG(1) << "Can't set user preference: unknown URL";
-    return false;
-  }
-
-  const VirtualKeyboard* keyboard = iter->second;
-  if (!keyboard->IsLayoutSupported(layout)) {
-    DVLOG(1) << "Requested layout is not supported by requested URL";
-    return false;
-  }
-
-  RemoveUserPreference(layout);
-  user_preference_.insert(std::make_pair(layout, keyboard));
-  return true;
-}
-
-void VirtualKeyboardSelector::RemoveUserPreference(const std::string& layout) {
-  user_preference_.erase(layout);
-}
-
-void VirtualKeyboardSelector::ClearAllUserPreferences() {
-  user_preference_.clear();
-}
-
-const VirtualKeyboard*
-VirtualKeyboardSelector::SelectVirtualKeyboardWithoutPreferences(
-    const std::string& layout) {
-  const VirtualKeyboard* keyboard =
-      SelectVirtualKeyboardInternal(keyboards_, layout);
-  if (!keyboard)
-    keyboard = SelectVirtualKeyboardInternal(system_keyboards_, layout);
-  return keyboard;
-}
-
-}  // namespace input_method
-}  // namespace chromeos