/*
*
* 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.
*
*/
/* jslint sloppy:true */
/* global Windows:true, setImmediate */
/* eslint standard/no-callback-literal : 0 */
var cordova = require('cordova');
var urlutil = require('cordova/urlutil');
var browserWrap,
popup,
navigationButtonsDiv,
navigationButtonsDivInner,
backButton,
forwardButton,
closeButton,
bodyOverflowStyle,
navigationEventsCallback,
hardwareBackCallback;
// x-ms-webview is available starting from Windows 8.1 (platformId is 'windows')
// http://msdn.microsoft.com/en-us/library/windows/apps/dn301831.aspx
var isWebViewAvailable = cordova.platformId === 'windows';
function attachNavigationEvents (element, callback) {
if (isWebViewAvailable) {
element.addEventListener('MSWebViewNavigationStarting', function (e) {
callback({ type: 'loadstart', url: e.uri }, {keepCallback: true});
});
element.addEventListener('MSWebViewNavigationCompleted', function (e) {
if (e.isSuccess) {
callback({ type: 'loadstop', url: e.uri }, { keepCallback: true });
} else {
callback({ type: 'loaderror', url: e.uri, code: e.webErrorStatus, message: 'Navigation failed with error code ' + e.webErrorStatus }, { keepCallback: true });
}
});
element.addEventListener('MSWebViewUnviewableContentIdentified', function (e) {
// WebView found the content to be not HTML.
// http://msdn.microsoft.com/en-us/library/windows/apps/dn609716.aspx
callback({ type: 'loaderror', url: e.uri, code: e.webErrorStatus, message: 'Navigation failed with error code ' + e.webErrorStatus }, { keepCallback: true });
});
element.addEventListener('MSWebViewContentLoading', function (e) {
if (navigationButtonsDiv && popup) {
if (popup.canGoBack) {
backButton.removeAttribute('disabled');
} else {
backButton.setAttribute('disabled', 'true');
}
if (popup.canGoForward) {
forwardButton.removeAttribute('disabled');
} else {
forwardButton.setAttribute('disabled', 'true');
}
}
});
} else {
var onError = function () {
callback({ type: 'loaderror', url: this.contentWindow.location }, {keepCallback: true});
};
element.addEventListener('unload', function () {
callback({ type: 'loadstart', url: this.contentWindow.location }, {keepCallback: true});
});
element.addEventListener('load', function () {
callback({ type: 'loadstop', url: this.contentWindow.location }, {keepCallback: true});
});
element.addEventListener('error', onError);
element.addEventListener('abort', onError);
}
}
var IAB = {
close: function (win, lose) {
setImmediate(function () {
if (browserWrap) {
if (navigationEventsCallback) {
navigationEventsCallback({ type: 'exit' });
}
browserWrap.parentNode.removeChild(browserWrap);
// Reset body overflow style to initial value
document.body.style.msOverflowStyle = bodyOverflowStyle;
browserWrap = null;
popup = null;
document.removeEventListener('backbutton', hardwareBackCallback, false);
}
});
},
show: function (win, lose) {
setImmediate(function () {
if (browserWrap) {
browserWrap.style.display = 'block';
}
});
},
hide: function (win, lose) {
if (browserWrap) {
browserWrap.style.display = 'none';
}
},
open: function (win, lose, args) {
// make function async so that we can add navigation events handlers before view is loaded and navigation occured
setImmediate(function () {
var strUrl = args[0];
var target = args[1];
var features = args[2];
var url;
navigationEventsCallback = win;
if (target === '_system') {
url = new Windows.Foundation.Uri(strUrl);
Windows.System.Launcher.launchUriAsync(url);
} else if (target === '_self' || !target) {
window.location = strUrl;
} else {
// "_blank" or anything else
if (!browserWrap) {
var browserWrapStyle = document.createElement('link');
browserWrapStyle.rel = 'stylesheet';
browserWrapStyle.type = 'text/css';
browserWrapStyle.href = urlutil.makeAbsolute('/www/css/inappbrowser.css');
document.head.appendChild(browserWrapStyle);
browserWrap = document.createElement('div');
browserWrap.className = 'inAppBrowserWrap';
if (features.indexOf('fullscreen=yes') > -1) {
browserWrap.classList.add('inAppBrowserWrapFullscreen');
}
// Save body overflow style to be able to reset it back later
bodyOverflowStyle = document.body.style.msOverflowStyle;
browserWrap.onclick = function () {
setTimeout(function () {
IAB.close(navigationEventsCallback);
}, 0);
};
document.body.appendChild(browserWrap);
// Hide scrollbars for the whole body while inappbrowser's window is open
document.body.style.msOverflowStyle = 'none';
}
if (features.indexOf('hidden=yes') !== -1) {
browserWrap.style.display = 'none';
}
popup = document.createElement(isWebViewAvailable ? 'x-ms-webview' : 'iframe');
if (popup instanceof HTMLIFrameElement) { // eslint-disable-line no-undef
// For iframe we need to override bacground color of parent element here
// otherwise pages without background color set will have transparent background
popup.style.backgroundColor = 'white';
}
popup.style.borderWidth = '0px';
popup.style.width = '100%';
popup.style.marginBottom = '-5px';
browserWrap.appendChild(popup);
var closeHandler = function (e) {
setTimeout(function () {
IAB.close(navigationEventsCallback);
}, 0);
};
if (features.indexOf('hardwareback=yes') > -1 || features.indexOf('hardwareback') === -1) {
hardwareBackCallback = function () {
if (browserWrap.style.display === 'none') {
// NOTE: backbutton handlers have to throw an exception in order to prevent
// returning 'true' inside cordova-js, which would mean that the event is handled by user.
// Throwing an exception means that the default/system navigation behavior will take place,
// which is to exit the app if the navigation stack is empty.
throw 'Exit the app'; // eslint-disable-line no-throw-literal
}
if (popup.canGoBack) {
popup.goBack();
} else {
closeHandler();
}
};
} else if (features.indexOf('hardwareback=no') > -1) {
hardwareBackCallback = function () {
if (browserWrap.style.display === 'none') {
// See comment above
throw 'Exit the app'; // eslint-disable-line no-throw-literal
}
closeHandler();
};
}
document.addEventListener('backbutton', hardwareBackCallback, false);
if (features.indexOf('location=yes') !== -1 || features.indexOf('location') === -1) {
popup.style.height = 'calc(100% - 70px)';
navigationButtonsDiv = document.createElement('div');
navigationButtonsDiv.className = 'inappbrowser-app-bar';
navigationButtonsDiv.onclick = function (e) {
e.cancelBubble = true;
};
navigationButtonsDivInner = document.createElement('div');
navigationButtonsDivInner.className = 'inappbrowser-app-bar-inner';
navigationButtonsDivInner.onclick = function (e) {
e.cancelBubble = true;
};
backButton = document.createElement('div');
backButton.innerText = 'back';
backButton.className = 'app-bar-action action-back';
backButton.addEventListener('click', function (e) {
if (popup.canGoBack) { popup.goBack(); }
});
forwardButton = document.createElement('div');
forwardButton.innerText = 'forward';
forwardButton.className = 'app-bar-action action-forward';
forwardButton.addEventListener('click', function (e) {
if (popup.canGoForward) { popup.goForward(); }
});
closeButton = document.createElement('div');
closeButton.innerText = 'close';
closeButton.className = 'app-bar-action action-close';
closeButton.addEventListener('click', closeHandler);
if (!isWebViewAvailable) {
// iframe navigation is not yet supported
backButton.setAttribute('disabled', 'true');
forwardButton.setAttribute('disabled', 'true');
}
navigationButtonsDivInner.appendChild(backButton);
navigationButtonsDivInner.appendChild(forwardButton);
navigationButtonsDivInner.appendChild(closeButton);
navigationButtonsDiv.appendChild(navigationButtonsDivInner);
browserWrap.appendChild(navigationButtonsDiv);
} else {
popup.style.height = '100%';
}
// start listening for navigation events
attachNavigationEvents(popup, navigationEventsCallback);
if (isWebViewAvailable) {
strUrl = strUrl.replace('ms-appx://', 'ms-appx-web://');
}
popup.src = strUrl;
}
});
},
injectScriptCode: function (win, fail, args) {
setImmediate(function () {
var code = args[0];
var hasCallback = args[1];
if (isWebViewAvailable && browserWrap && popup) {
var op = popup.invokeScriptAsync('eval', code);
op.oncomplete = function (e) {
if (hasCallback) {
// return null if event target is unavailable by some reason
var result = (e && e.target) ? [e.target.result] : [null];
win(result);
}
};
op.onerror = function () { };
op.start();
}
});
},
injectScriptFile: function (win, fail, args) {
setImmediate(function () {
var filePath = args[0];
var hasCallback = args[1];
if (filePath) {
filePath = urlutil.makeAbsolute(filePath);
}
if (isWebViewAvailable && browserWrap && popup) {
// CB-12364 getFileFromApplicationUriAsync does not support ms-appx-web
var uri = new Windows.Foundation.Uri(filePath.replace('ms-appx-web:', 'ms-appx:'));
Windows.Storage.StorageFile.getFileFromApplicationUriAsync(uri).done(function (file) {
Windows.Storage.FileIO.readTextAsync(file).done(function (code) {
var op = popup.invokeScriptAsync('eval', code);
op.oncomplete = function (e) {
if (hasCallback) {
var result = [e.target.result];
win(result);
}
};
op.onerror = function () { };
op.start();
});
});
}
});
},
injectStyleCode: function (win, fail, args) {
setImmediate(function () {
var code = args[0];
var hasCallback = args[1];
if (isWebViewAvailable && browserWrap && popup) {
injectCSS(popup, code, hasCallback && win);
}
});
},
injectStyleFile: function (win, fail, args) {
setImmediate(function () {
var filePath = args[0];
var hasCallback = args[1];
filePath = filePath && urlutil.makeAbsolute(filePath);
if (isWebViewAvailable && browserWrap && popup) {
// CB-12364 getFileFromApplicationUriAsync does not support ms-appx-web
var uri = new Windows.Foundation.Uri(filePath.replace('ms-appx-web:', 'ms-appx:'));
Windows.Storage.StorageFile.getFileFromApplicationUriAsync(uri).then(function (file) {
return Windows.Storage.FileIO.readTextAsync(file);
}).done(function (code) {
injectCSS(popup, code, hasCallback && win);
}, function () {
// no-op, just catch an error
});
}
});
}
};
function injectCSS (webView, cssCode, callback) {
// This will automatically escape all thing that we need (quotes, slashes, etc.)
var escapedCode = JSON.stringify(cssCode);
var evalWrapper = '(function(d){var c=d.createElement(\'style\');c.innerHTML=%s;d.head.appendChild(c);})(document)'
.replace('%s', escapedCode);
var op = webView.invokeScriptAsync('eval', evalWrapper);
op.oncomplete = function () {
if (callback) {
callback([]);
}
};
op.onerror = function () { };
op.start();
}
module.exports = IAB;
require('cordova/exec/proxy').add('InAppBrowser', module.exports);