ui/events/test/keyboard_layout_mac.cc

// Copyright 2016 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 "ui/events/test/keyboard_layout.h"

#include "base/logging.h"

namespace ui {

PlatformKeyboardLayout GetPlatformKeyboardLayout(KeyboardLayout layout) {
  // Right now tests only need US English.  If other layouts need to be
  // supported in the future this code should be extended.
  DCHECK_EQ(KEYBOARD_LAYOUT_ENGLISH_US, layout);

  const char kUsInputSourceId[] = "com.apple.keylayout.US";

  base::ScopedCFTypeRef<CFMutableDictionaryRef> input_source_list_filter(
      CFDictionaryCreateMutable(kCFAllocatorDefault, 1,
                                &kCFTypeDictionaryKeyCallBacks,
                                &kCFTypeDictionaryValueCallBacks));
  base::ScopedCFTypeRef<CFStringRef> input_source_id_ref(
      CFStringCreateWithCString(kCFAllocatorDefault, kUsInputSourceId,
                                kCFStringEncodingUTF8));
  CFDictionaryAddValue(input_source_list_filter, kTISPropertyInputSourceID,
                       input_source_id_ref);
  base::ScopedCFTypeRef<CFArrayRef> input_source_list(
      TISCreateInputSourceList(input_source_list_filter, true));
  if (CFArrayGetCount(input_source_list) != 1)
    return PlatformKeyboardLayout();

  return base::ScopedCFTypeRef<TISInputSourceRef>(
      (TISInputSourceRef)CFArrayGetValueAtIndex(input_source_list, 0),
      base::scoped_policy::RETAIN);
}

PlatformKeyboardLayout ScopedKeyboardLayout::GetActiveLayout() {
  return PlatformKeyboardLayout(TISCopyCurrentKeyboardInputSource());
}

void ScopedKeyboardLayout::ActivateLayout(PlatformKeyboardLayout layout) {
  DCHECK(layout);
  OSStatus result = TISSelectInputSource(layout);
  DCHECK_EQ(noErr, result);
}

}  // namespace ui