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Diffstat (limited to 'www/cordova-js-src/exec.js')
| -rw-r--r-- | www/cordova-js-src/exec.js | 262 |
1 files changed, 0 insertions, 262 deletions
diff --git a/www/cordova-js-src/exec.js b/www/cordova-js-src/exec.js deleted file mode 100644 index 3fb7fa1..0000000 --- a/www/cordova-js-src/exec.js +++ /dev/null @@ -1,262 +0,0 @@ -/* - * - * 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 require, module, atob, document */ - -/** - * Creates a gap bridge iframe used to notify the native code about queued - * commands. - */ -var cordova = require('cordova'), - utils = require('cordova/utils'), - base64 = require('cordova/base64'), - execIframe, - commandQueue = [], // Contains pending JS->Native messages. - isInContextOfEvalJs = 0, - failSafeTimerId = 0; - -function massageArgsJsToNative(args) { - if (!args || utils.typeName(args) != 'Array') { - return args; - } - var ret = []; - args.forEach(function(arg, i) { - if (utils.typeName(arg) == 'ArrayBuffer') { - ret.push({ - 'CDVType': 'ArrayBuffer', - 'data': base64.fromArrayBuffer(arg) - }); - } else { - ret.push(arg); - } - }); - return ret; -} - -function massageMessageNativeToJs(message) { - if (message.CDVType == 'ArrayBuffer') { - var stringToArrayBuffer = function(str) { - var ret = new Uint8Array(str.length); - for (var i = 0; i < str.length; i++) { - ret[i] = str.charCodeAt(i); - } - return ret.buffer; - }; - var base64ToArrayBuffer = function(b64) { - return stringToArrayBuffer(atob(b64)); - }; - message = base64ToArrayBuffer(message.data); - } - return message; -} - -function convertMessageToArgsNativeToJs(message) { - var args = []; - if (!message || !message.hasOwnProperty('CDVType')) { - args.push(message); - } else if (message.CDVType == 'MultiPart') { - message.messages.forEach(function(e) { - args.push(massageMessageNativeToJs(e)); - }); - } else { - args.push(massageMessageNativeToJs(message)); - } - return args; -} - -function iOSExec() { - - var successCallback, failCallback, service, action, actionArgs; - var callbackId = null; - if (typeof arguments[0] !== 'string') { - // FORMAT ONE - successCallback = arguments[0]; - failCallback = arguments[1]; - service = arguments[2]; - action = arguments[3]; - actionArgs = arguments[4]; - - // Since we need to maintain backwards compatibility, we have to pass - // an invalid callbackId even if no callback was provided since plugins - // will be expecting it. The Cordova.exec() implementation allocates - // an invalid callbackId and passes it even if no callbacks were given. - callbackId = 'INVALID'; - } else { - throw new Error('The old format of this exec call has been removed (deprecated since 2.1). Change to: ' + - 'cordova.exec(null, null, \'Service\', \'action\', [ arg1, arg2 ]);' - ); - } - - // If actionArgs is not provided, default to an empty array - actionArgs = actionArgs || []; - - // Register the callbacks and add the callbackId to the positional - // arguments if given. - if (successCallback || failCallback) { - callbackId = service + cordova.callbackId++; - cordova.callbacks[callbackId] = - {success:successCallback, fail:failCallback}; - } - - actionArgs = massageArgsJsToNative(actionArgs); - - var command = [callbackId, service, action, actionArgs]; - - // Stringify and queue the command. We stringify to command now to - // effectively clone the command arguments in case they are mutated before - // the command is executed. - commandQueue.push(JSON.stringify(command)); - - // If we're in the context of a stringByEvaluatingJavaScriptFromString call, - // then the queue will be flushed when it returns; no need for a poke. - // Also, if there is already a command in the queue, then we've already - // poked the native side, so there is no reason to do so again. - if (!isInContextOfEvalJs && commandQueue.length == 1) { - pokeNative(); - } -} - -// CB-10530 -function proxyChanged() { - var cexec = cordovaExec(); - - return (execProxy !== cexec && // proxy objects are different - iOSExec !== cexec // proxy object is not the current iOSExec - ); -} - -// CB-10106 -function handleBridgeChange() { - if (proxyChanged()) { - var commandString = commandQueue.shift(); - while(commandString) { - var command = JSON.parse(commandString); - var callbackId = command[0]; - var service = command[1]; - var action = command[2]; - var actionArgs = command[3]; - var callbacks = cordova.callbacks[callbackId] || {}; - - execProxy(callbacks.success, callbacks.fail, service, action, actionArgs); - - commandString = commandQueue.shift(); - }; - return true; - } - - return false; -} - -function pokeNative() { - // CB-5488 - Don't attempt to create iframe before document.body is available. - if (!document.body) { - setTimeout(pokeNative); - return; - } - - // Check if they've removed it from the DOM, and put it back if so. - if (execIframe && execIframe.contentWindow) { - execIframe.contentWindow.location = 'gap://ready'; - } else { - execIframe = document.createElement('iframe'); - execIframe.style.display = 'none'; - execIframe.src = 'gap://ready'; - document.body.appendChild(execIframe); - } - // Use a timer to protect against iframe being unloaded during the poke (CB-7735). - // This makes the bridge ~ 7% slower, but works around the poke getting lost - // when the iframe is removed from the DOM. - // An onunload listener could be used in the case where the iframe has just been - // created, but since unload events fire only once, it doesn't work in the normal - // case of iframe reuse (where unload will have already fired due to the attempted - // navigation of the page). - failSafeTimerId = setTimeout(function() { - if (commandQueue.length) { - // CB-10106 - flush the queue on bridge change - if (!handleBridgeChange()) { - pokeNative(); - } - } - }, 50); // Making this > 0 improves performance (marginally) in the normal case (where it doesn't fire). -} - -iOSExec.nativeFetchMessages = function() { - // Stop listing for window detatch once native side confirms poke. - if (failSafeTimerId) { - clearTimeout(failSafeTimerId); - failSafeTimerId = 0; - } - // Each entry in commandQueue is a JSON string already. - if (!commandQueue.length) { - return ''; - } - var json = '[' + commandQueue.join(',') + ']'; - commandQueue.length = 0; - return json; -}; - -iOSExec.nativeCallback = function(callbackId, status, message, keepCallback, debug) { - return iOSExec.nativeEvalAndFetch(function() { - var success = status === 0 || status === 1; - var args = convertMessageToArgsNativeToJs(message); - function nc2() { - cordova.callbackFromNative(callbackId, success, status, args, keepCallback); - } - setTimeout(nc2, 0); - }); -}; - -iOSExec.nativeEvalAndFetch = function(func) { - // This shouldn't be nested, but better to be safe. - isInContextOfEvalJs++; - try { - func(); - return iOSExec.nativeFetchMessages(); - } finally { - isInContextOfEvalJs--; - } -}; - -// Proxy the exec for bridge changes. See CB-10106 - -function cordovaExec() { - var cexec = require('cordova/exec'); - var cexec_valid = (typeof cexec.nativeFetchMessages === 'function') && (typeof cexec.nativeEvalAndFetch === 'function') && (typeof cexec.nativeCallback === 'function'); - return (cexec_valid && execProxy !== cexec)? cexec : iOSExec; -} - -function execProxy() { - cordovaExec().apply(null, arguments); -}; - -execProxy.nativeFetchMessages = function() { - return cordovaExec().nativeFetchMessages.apply(null, arguments); -}; - -execProxy.nativeEvalAndFetch = function() { - return cordovaExec().nativeEvalAndFetch.apply(null, arguments); -}; - -execProxy.nativeCallback = function() { - return cordovaExec().nativeCallback.apply(null, arguments); -}; - -module.exports = execProxy; |
