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Inject AndroidVox locally when there is no network connection.

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The WebView typically injects AndroidVox from a Google server when it
launches a page with TalkBack enabled, however, in the unlikely event
that the app launches without a network connection and AndroidVox has
not been cached from an previous connected session, AndroidVox will not
start and the app will be inaccessible. We try to mitigate this by
injecting AndroidVox from a local path.
This commit is contained in:
Michael Jordan
2014-02-25 18:56:00 -05:00
parent 06565d5b9d
commit f26cb3ae77
4 changed files with 3570 additions and 10 deletions
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plugin.xml
+9 -9
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@@ -18,6 +18,7 @@
</js-module>
<dependency id="org.apache.cordova.device" url="https://git-wip-us.apache.org/repos/asf/cordova-plugin-device.git" />
<dependency id="org.apache.cordova.network-information" url="https://git-wip-us.apache.org/repos/asf/cordova-plugin-network-information.git" />
<!-- ios -->
<platform name="ios">
@@ -26,25 +27,24 @@
<param name="ios-package" value="CDVMobileAccessibility" onload="true" />
</feature>
</config-file>
<header-file src="src/ios/CDVMobileAccessibility.h" />
<source-file src="src/ios/CDVMobileAccessibility.m" />
</platform>
<!-- android -->
<platform name="android">
<config-file target="res/xml/config.xml" parent="/*">
<config-file target="config.xml" parent="/*">
<access origin="https://ssl.gstatic.com/accessibility/javascript/android/*" />
<feature name="MobileAccessibility" >
<param name="android-package" value="com.phonegap.plugin.mobileaccessibility.MobileAccessibility"/>
</feature>
<access origin="https://ssl.gstatic.com/accessibility/javascript/android/*" />
</config-file>
<config-file target="assets/www/config.xml" parent="/*">
<feature name="MobileAccessibility" >
<param name="android-package" value="com.phonegap.plugin.mobileaccessibility.MobileAccessibility"/>
</feature>
<access origin="https://ssl.gstatic.com/accessibility/javascript/android/*" />
</config-file>
<source-file src="src/android/com/phonegap/plugin/mobileaccessibility/MobileAccessibility.java" target-dir="src/com/phonegap/plugin/mobileaccessibility" />
<source-file src="src/android/com/phonegap/plugin/mobileaccessibility/AbstractMobileAccessibilityHelper.java" target-dir="src/com/phonegap/plugin/mobileaccessibility" />
<source-file src="src/android/com/phonegap/plugin/mobileaccessibility/DonutMobileAccessibilityHelper.java" target-dir="src/com/phonegap/plugin/mobileaccessibility" />
<source-file src="src/android/com/phonegap/plugin/mobileaccessibility/IceCreamSandwichMobileAccessibilityHelper.java" target-dir="src/com/phonegap/plugin/mobileaccessibility" />
<source-file src="src/android/com/phonegap/plugin/mobileaccessibility/JellyBeanMobileAccessibilityHelper.java" target-dir="src/com/phonegap/plugin/mobileaccessibility" />
<source-file src="src/android/com/phonegap/plugin/mobileaccessibility/KitKatMobileAccessibilityHelper.java" target-dir="src/com/phonegap/plugin/mobileaccessibility" />
<asset src="www/android" target="plugins/com.phonegap.plugin.mobile-accessibility/android" />
</platform>
</plugin>
www/android/AndroidVox_v1.js
+1765
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www/android/chromeandroidvox.js
+1765
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www/mobile-accessibility.js
+31 -1
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@@ -22,7 +22,9 @@
var argscheck = require('cordova/argscheck'),
utils = require('cordova/utils'),
exec = require('cordova/exec'),
device = require('org.apache.cordova.device.device');
device = require('org.apache.cordova.device.device'),
network = require('org.apache.cordova.network-information.network'),
connection = require('org.apache.cordova.network-information.Connection');
var MobileAccessibility = function() {
this._isScreenReaderRunning = false;
@@ -95,6 +97,9 @@ MobileAccessibility.prototype.activateOrDeactivateChromeVox = function(bool) {
if (typeof cvox === "undefined") {
if (bool) {
console.warn('A screen reader is running but ChromeVox has failed to initialize.');
if (navigator.connection.type === Connection.UNKNOWN || navigator.connection.type === Connection.NONE) {
mobileAccessibility.injectLocalAndroidVoxScript();
}
}
} else {
// activate or deactivate ChromeVox based on whether or not or not the screen reader is running.
@@ -106,6 +111,31 @@ MobileAccessibility.prototype.activateOrDeactivateChromeVox = function(bool) {
}
};
MobileAccessibility.prototype.scriptInjected = false;
MobileAccessibility.prototype.injectLocalAndroidVoxScript = function() {
var versionsplit = device.version.split('.');
if (device.platform !== "Android" ||
!(versionsplit[0] > 4 || (versionsplit[0] == 4 && versionsplit[1] >= 1)) ||
typeof cvox !== "undefined" || mobileAccessibility.scriptInjected) return;
var script = document.createElement('script');
script.type = 'text/javascript';
script.async = true;
script.onload = function(){
// console.log(this.src + ' has loaded');
if (mobileAccessibility.isChromeVoxActive()) {
cordova.fireWindowEvent("screenreaderstatuschanged", {
isScreenReaderRunning: true
});
}
};
script.src = (versionsplit[0] > 4 || versionsplit[1] > 3)
? "plugins/com.phonegap.plugin.mobile-accessibility/android/chromeandroidvox.js"
: "plugins/com.phonegap.plugin.mobile-accessibility/android/AndroidVox_v1.js";
document.getElementsByTagName('head')[0].appendChild(script);
mobileAccessibility.scriptInjected = true;
};
/**
* Asynchronous call to native MobileAccessibility to determine if closed captioning is enabled.
* @param {function} callback A callback method to receive the asynchronous result from the native MobileAccessibility.