chrome/browser/accessibility/accessibility_extension_api.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/accessibility/accessibility_extension_api.h"
   6
   7 #include "base/json/json_writer.h"
   8 #include "base/strings/string_number_conversions.h"
   9 #include "base/values.h"
  10 #include "chrome/browser/extensions/api/tabs/tabs_constants.h"
  11 #include "chrome/browser/extensions/extension_service.h"
  12 #include "chrome/browser/extensions/extension_tab_util.h"
  13 #include "chrome/browser/infobars/infobar_service.h"
  14 #include "chrome/browser/profiles/profile.h"
  15 #include "chrome/common/extensions/api/accessibility_private.h"
  16 #include "chrome/common/extensions/extension_constants.h"
  17 #include "components/infobars/core/confirm_infobar_delegate.h"
  18 #include "components/infobars/core/infobar.h"
  19 #include "content/public/browser/browser_accessibility_state.h"
  20 #include "extensions/browser/event_router.h"
  21 #include "extensions/browser/extension_system.h"
  22 #include "extensions/browser/lazy_background_task_queue.h"
  23 #include "extensions/common/error_utils.h"
  24 #include "extensions/common/manifest_handlers/background_info.h"
  25
  26 #if defined(OS_CHROMEOS)
  27 #include "chrome/browser/chromeos/ui/accessibility_focus_ring_controller.h"
  28 #endif
  29
  30 namespace accessibility_private = extensions::api::accessibility_private;
  31
  32 namespace {
  33 #if defined(OS_CHROMEOS)
  34 // ScreenRect fields.
  35 const char kLeft[] = "left";
  36 const char kTop[] = "top";
  37 const char kWidth[] = "width";
  38 const char kHeight[] = "height";
  39 #endif  // defined(OS_CHROMEOS)
  40
  41 const char kErrorNotSupported[] = "This API is not supported on this platform.";
  42 }  // namespace
  43
  44 bool AccessibilityPrivateSetNativeAccessibilityEnabledFunction::RunSync() {
  45   bool enabled;
  46   EXTENSION_FUNCTION_VALIDATE(args_->GetBoolean(0, &enabled));
  47   if (enabled) {
  48     content::BrowserAccessibilityState::GetInstance()->
  49         EnableAccessibility();
  50   } else {
  51     content::BrowserAccessibilityState::GetInstance()->
  52         DisableAccessibility();
  53   }
  54   return true;
  55 }
  56
  57 bool AccessibilityPrivateSetFocusRingFunction::RunSync() {
  58 #if defined(OS_CHROMEOS)
  59   base::ListValue* rect_values = NULL;
  60   EXTENSION_FUNCTION_VALIDATE(args_->GetList(0, &rect_values));
  61
  62   std::vector<gfx::Rect> rects;
  63   for (size_t i = 0; i < rect_values->GetSize(); ++i) {
  64     base::DictionaryValue* rect_value = NULL;
  65     EXTENSION_FUNCTION_VALIDATE(rect_values->GetDictionary(i, &rect_value));
  66     int left, top, width, height;
  67     EXTENSION_FUNCTION_VALIDATE(rect_value->GetInteger(kLeft, &left));
  68     EXTENSION_FUNCTION_VALIDATE(rect_value->GetInteger(kTop, &top));
  69     EXTENSION_FUNCTION_VALIDATE(rect_value->GetInteger(kWidth, &width));
  70     EXTENSION_FUNCTION_VALIDATE(rect_value->GetInteger(kHeight, &height));
  71     rects.push_back(gfx::Rect(left, top, width, height));
  72   }
  73
  74   chromeos::AccessibilityFocusRingController::GetInstance()->SetFocusRing(
  75       rects);
  76   return true;
  77 #endif  // defined(OS_CHROMEOS)
  78
  79   error_ = kErrorNotSupported;
  80   return false;
  81 }