Revert of Proposed alternative for supporting ChromeVox keyboard commands.

chrome/browser/chromeos/accessibility/spoken_feedback_event_rewriter.cc

-// Copyright 2015 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/accessibility/spoken_feedback_event_rewriter.h"
-
-#include <string>
-
-#include "base/values.h"
-#include "chrome/browser/browser_process.h"
-#include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
-#include "chrome/browser/profiles/profile_manager.h"
-#include "chrome/common/extensions/api/commands/commands_handler.h"
-#include "chrome/common/extensions/extension_constants.h"
-#include "extensions/browser/event_router.h"
-#include "extensions/browser/extension_registry.h"
-#include "ui/events/event.h"
-
-bool SpokenFeedbackEventRewriterDelegate::IsSpokenFeedbackEnabled() const {
-  return true;
-}
-
-bool SpokenFeedbackEventRewriterDelegate::DispatchKeyToChromeVox(
-    ui::KeyEvent key_event) {
-  int kAllModifiers = ui::EF_SHIFT_DOWN | ui::EF_CONTROL_DOWN |
-                      ui::EF_ALT_DOWN | ui::EF_COMMAND_DOWN;
-
-  if (!g_browser_process->profile_manager())
-    return false;
-
-  content::BrowserContext* context =
-      g_browser_process->profile_manager()->GetLastUsedProfile();
-
-  const extensions::Extension* extension =
-      extensions::ExtensionRegistry::Get(context)->enabled_extensions().GetByID(
-          extension_misc::kChromeVoxExtensionId);
-  if (!extension)
-    return false;
-
-  extensions::EventRouter* event_router = extensions::EventRouter::Get(context);
-  if (!event_router->ExtensionHasEventListener(
-          extension_misc::kChromeVoxExtensionId, "commands.onCommand"))
-    return false;
-
-  const extensions::CommandMap* commands =
-      extensions::CommandsInfo::GetNamedCommands(extension);
-  if (!commands)
-    return false;
-
-  int modifiers = key_event.flags() & kAllModifiers;
-  std::string command_name;
-  for (extensions::CommandMap::const_iterator iter = commands->begin();
-       iter != commands->end(); ++iter) {
-    int command_modifiers =
-        iter->second.accelerator().modifiers() & kAllModifiers;
-    if (iter->second.accelerator().key_code() == key_event.key_code() &&
-        command_modifiers == modifiers)
-      command_name = iter->second.command_name();
-  }
-
-  if (command_name.empty())
-    return false;
-
-  scoped_ptr<base::ListValue> args(new base::ListValue());
-  args->Append(new base::StringValue(command_name));
-
-  scoped_ptr<extensions::Event> extension_event(
-      new extensions::Event("commands.onCommand", args.Pass()));
-  extension_event->restrict_to_browser_context = context;
-
-  event_router->DispatchEventToExtension(extension_misc::kChromeVoxExtensionId,
-                                         extension_event.Pass());
-
-  return true;
-}
-
-SpokenFeedbackEventRewriter::SpokenFeedbackEventRewriter(
-    SpokenFeedbackEventRewriterDelegate* delegate)
-    : delegate_(delegate) {
-  if (!delegate_)
-    delegate_ = &default_delegate_;
-}
-
-SpokenFeedbackEventRewriter::~SpokenFeedbackEventRewriter() {
-}
-
-ui::EventRewriteStatus SpokenFeedbackEventRewriter::RewriteEvent(
-    const ui::Event& event,
-    scoped_ptr<ui::Event>* new_event) {
-  if (!delegate_->IsSpokenFeedbackEnabled())
-    return ui::EVENT_REWRITE_CONTINUE;
-
-  if ((event.type() != ui::ET_KEY_PRESSED &&
-       event.type() != ui::ET_KEY_RELEASED))
-    return ui::EVENT_REWRITE_CONTINUE;
-
-  const ui::KeyEvent key_event = static_cast<const ui::KeyEvent&>(event);
-  if (event.type() == ui::ET_KEY_RELEASED) {
-    std::vector<int>::iterator it =
-        std::find(captured_key_codes_.begin(), captured_key_codes_.end(),
-                  key_event.key_code());
-    if (it != captured_key_codes_.end()) {
-      captured_key_codes_.erase(it);
-      return ui::EVENT_REWRITE_DISCARD;
-    }
-    return ui::EVENT_REWRITE_CONTINUE;
-  }
-
-  if (delegate_->DispatchKeyToChromeVox(key_event)) {
-    captured_key_codes_.push_back(key_event.key_code());
-    return ui::EVENT_REWRITE_DISCARD;
-  }
-  return ui::EVENT_REWRITE_CONTINUE;
-}
-
-ui::EventRewriteStatus SpokenFeedbackEventRewriter::NextDispatchEvent(
-    const ui::Event& last_event,
-    scoped_ptr<ui::Event>* new_event) {
-  return ui::EVENT_REWRITE_CONTINUE;
-}