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Diffstat (limited to 'StoneIsland/plugins/phonegap-plugin-mobile-accessibility/src/windows/mobile-accessibility-proxy.js')
| -rw-r--r-- | StoneIsland/plugins/phonegap-plugin-mobile-accessibility/src/windows/mobile-accessibility-proxy.js | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/StoneIsland/plugins/phonegap-plugin-mobile-accessibility/src/windows/mobile-accessibility-proxy.js b/StoneIsland/plugins/phonegap-plugin-mobile-accessibility/src/windows/mobile-accessibility-proxy.js new file mode 100644 index 00000000..166c3e5e --- /dev/null +++ b/StoneIsland/plugins/phonegap-plugin-mobile-accessibility/src/windows/mobile-accessibility-proxy.js @@ -0,0 +1,261 @@ +/** + * + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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. + * +*/ + +/*global Windows:true*/ + +var cordova = require('cordova'), + accessibilitySettings, + uiSettings, + callbackContext, + fontScale = 1, + styleElement, + bodyStyleDeclaration, + audio, + synth; + +function getAccessibilitySettings() { + if (!accessibilitySettings) { + accessibilitySettings = new Windows.UI.ViewManagement.AccessibilitySettings(); + } + return accessibilitySettings; +} + +function getUISettings() { + if (!uiSettings) { + uiSettings = new Windows.UI.ViewManagement.UISettings(); + } + return uiSettings; +} + +function getFontScale() { + if (!uiSettings) { + uiSettings = getUISettings(); + } + var scale = uiSettings.textScaleFactor; + // console.log("getFontScale " + scale); + return scale; +} + +function getTextZoom() { + var zoom = Math.round(fontScale * 100); + // console.log("getTextZoom " + zoom); + return zoom; +} + +function createStyleElement() { + if (!styleElement) { + styleElement = document.createElement("style"); + styleElement.type = "text/css"; + document.head.appendChild(styleElement); + } +} + +function setTextZoom(zoom) { + // console.log("setTextZoom " + zoom); + fontScale = zoom/100; + + createStyleElement(); + + if (bodyStyleDeclaration) { + styleElement.removeChild(bodyStyleDeclaration); + } + + bodyStyleDeclaration = document.createTextNode("body {-ms-text-size-adjust: " + zoom + "%}"); + + styleElement.appendChild(bodyStyleDeclaration); +} + +function onHighContrastChanged(event) { + cordova.fireWindowEvent(MobileAccessibilityNotifications.HIGH_CONTRAST_CHANGED, + getMobileAccessibilityStatus()); + sendMobileAccessibilityStatusChangedCallback(); +} + +function sendMobileAccessibilityStatusChangedCallback() { + console.log("sendMobileAccessibilityStatusChangedCallback"); + if (callbackContext && typeof callbackContext === "function") { + callbackContext(getMobileAccessibilityStatus()); + } +} + +function getMobileAccessibilityStatus() { + return { + isScreenReaderRunning: false, + isClosedCaptioningEnabled: false, + isHighContrastEnabled: accessibilitySettings.highContrast, + highContrastScheme: (accessibilitySettings.highContrast ? accessibilitySettings.highContrastScheme : undefined) + }; +} + +module.exports = { + start:function(win, fail, args) { + if (typeof win === "function") { + callbackContext = win; + } + if (!accessibilitySettings) { + accessibilitySettings = getAccessibilitySettings(); + } + accessibilitySettings.addEventListener("highcontrastchanged", onHighContrastChanged); + + if (!uiSettings) { + uiSettings = getUISettings(); + } + }, + stop:function(win, fail, args) { + if (accessibilitySettings) { + accessibilitySettings.removeEventListener("highcontrastchanged", onHighContrastChanged); + } + + if (synth) { + synth.close(); + synth = null; + } + + if (audio) { + audio = null; + } + + if (callbackContext) { + callbackContext = null; + } + }, + isScreenReaderRunning:function(win, fail, args) { + console && console.error && console.error("Error : Windows 8.1 does not yet have a way to detect that Narrator is running."); + fail && setTimeout(function() { + fail(new Error("Windows Phone 8.1 does not yet have a way to detect that Narrator is running.")); + }, 0); + if (win && typeof win === "function") { + win(false); + } + }, + isClosedCaptioningEnabled:function(win, fail, args) { + console && console.error && console.error("Error : MobileAccessibility.isClosedCaptioningEnabled is not yet implemented on Windows 8.1."); + fail && setTimeout(function() { + fail(new Error("MobileAccessibility.isClosedCaptioningEnabled is not yet implemented on Windows 8.1.")); + }, 0); + if (win && typeof win === "function") { + win(false); + } + }, + isHighContrastEnabled:function(win, fail, args) { + if (!accessibilitySettings) { + accessibilitySettings = getAccessibilitySettings(); + } + + if (win && typeof win === "function") { + win(accessibilitySettings.highContrast); + } + return accessibilitySettings.highContrast; + }, + getHighContrastScheme:function(win, fail, args) { + if (!accessibilitySettings) { + accessibilitySettings = getAccessibilitySettings(); + } + + var highContrastScheme = accessibilitySettings.highContrast ? accessibilitySettings.highContrastScheme : undefined; + + if (win) { + win(highContrastScheme); + } + return highContrastScheme; + }, + getTextZoom:function(win, fail, args) { + var zoom = Math.round(fontScale * 100); + + if (win) { + win(zoom); + } + + return zoom; + }, + setTextZoom:function(win, fail, args) { + var zoom = args[0]; + setTextZoom(args[0]); + + if (win) { + win(zoom); + } + + return zoom; + }, + updateTextZoom:function(win, fail, args) { + var scale = getFontScale(), + zoom; + if (scale !== fontScale) { + fontScale = scale; + } + zoom = getTextZoom(); + setTextZoom(zoom); + + if (win) { + win(zoom); + } + + return zoom; + }, + postNotification:function(win, fail, args) { + var str = args[1]; + + if (str && typeof str === "string") { + // The object for controlling and playing audio. + if (!audio) { + audio = new Audio(); + } else if (audio.pause) { + audio.pause(); + audio.src = null; + } + + // The object for controlling the speech synthesis engine (voice). + if (!synth) { + synth = new Windows.Media.SpeechSynthesis.SpeechSynthesizer(); + } + + if (str && str.length && str !== "\u200b") { + + // Generate the audio stream from plain text. + synth.synthesizeTextToStreamAsync(str).then(function (markersStream) { + + // Convert the stream to a URL Blob. + var blob = MSApp.createBlobFromRandomAccessStream(markersStream.contentType, markersStream); + // Send the Blob to the audio object. + audio.src = URL.createObjectURL(blob, { oneTimeOnly: true }); + // Start at beginning when speak is hit + markersStream.seek(0); + audio.AutoPlay = Boolean(true); + + // Audio on completed + audio.onended = function () { + if (win) { + win({ + stringValue: str, + wasSuccessful: true + }); + } + }; + + audio.play(); + }); + } + } + } +}; + +require("cordova/exec/proxy").add("MobileAccessibility", module.exports); |