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// Copyright 2017 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
interface H5vccAccessibility {
// True if the host operating system's "high contrast text" option
// has been enabled.
readonly attribute boolean highContrastText;
void addHighContrastTextListener(H5vccAccessibilityCallback callback);
// True if the host operating system's "text to speech" accessibility
// option is enabled.
readonly attribute boolean textToSpeech;
// This callback is invoked when text-to-speech settings have changed. It
// may also be invoked if other accessibility settings (ones not related to
// text-to-speech) have changed.
void addTextToSpeechListener(H5vccAccessibilityCallback callback);
// True if the built-in screen reader is enabled.
// Setting it to false disables the built-in screen reader.
attribute boolean builtInScreenReader;
};
callback H5vccAccessibilityCallback = void();