diff -r 5841f229baf7 -r b19ff70ba509 WebBrowser/data/javascript/qwebchannel.js
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WebBrowser/data/javascript/qwebchannel.js Sat Feb 06 17:43:59 2016 +0100
@@ -0,0 +1,413 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Copyright (C) 2014 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Milian Wolff <milian.wolff@kdab.com>
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtWebChannel module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+"use strict";
+
+var QWebChannelMessageTypes = {
+ signal: 1,
+ propertyUpdate: 2,
+ init: 3,
+ idle: 4,
+ debug: 5,
+ invokeMethod: 6,
+ connectToSignal: 7,
+ disconnectFromSignal: 8,
+ setProperty: 9,
+ response: 10,
+};
+
+var QWebChannel = function(transport, initCallback)
+{
+ if (typeof transport !== "object" || typeof transport.send !== "function") {
+ console.error("The QWebChannel expects a transport object with a send function and onmessage callback property." +
+ " Given is: transport: " + typeof(transport) + ", transport.send: " + typeof(transport.send));
+ return;
+ }
+
+ var channel = this;
+ this.transport = transport;
+
+ this.send = function(data)
+ {
+ if (typeof(data) !== "string") {
+ data = JSON.stringify(data);
+ }
+ channel.transport.send(data);
+ }
+
+ this.transport.onmessage = function(message)
+ {
+ var data = message.data;
+ if (typeof data === "string") {
+ data = JSON.parse(data);
+ }
+ switch (data.type) {
+ case QWebChannelMessageTypes.signal:
+ channel.handleSignal(data);
+ break;
+ case QWebChannelMessageTypes.response:
+ channel.handleResponse(data);
+ break;
+ case QWebChannelMessageTypes.propertyUpdate:
+ channel.handlePropertyUpdate(data);
+ break;
+ default:
+ console.error("invalid message received:", message.data);
+ break;
+ }
+ }
+
+ this.execCallbacks = {};
+ this.execId = 0;
+ this.exec = function(data, callback)
+ {
+ if (!callback) {
+ // if no callback is given, send directly
+ channel.send(data);
+ return;
+ }
+ if (channel.execId === Number.MAX_VALUE) {
+ // wrap
+ channel.execId = Number.MIN_VALUE;
+ }
+ if (data.hasOwnProperty("id")) {
+ console.error("Cannot exec message with property id: " + JSON.stringify(data));
+ return;
+ }
+ data.id = channel.execId++;
+ channel.execCallbacks[data.id] = callback;
+ channel.send(data);
+ };
+
+ this.objects = {};
+
+ this.handleSignal = function(message)
+ {
+ var object = channel.objects[message.object];
+ if (object) {
+ object.signalEmitted(message.signal, message.args);
+ } else {
+ console.warn("Unhandled signal: " + message.object + "::" + message.signal);
+ }
+ }
+
+ this.handleResponse = function(message)
+ {
+ if (!message.hasOwnProperty("id")) {
+ console.error("Invalid response message received: ", JSON.stringify(message));
+ return;
+ }
+ channel.execCallbacks[message.id](message.data);
+ delete channel.execCallbacks[message.id];
+ }
+
+ this.handlePropertyUpdate = function(message)
+ {
+ for (var i in message.data) {
+ var data = message.data[i];
+ var object = channel.objects[data.object];
+ if (object) {
+ object.propertyUpdate(data.signals, data.properties);
+ } else {
+ console.warn("Unhandled property update: " + data.object + "::" + data.signal);
+ }
+ }
+ channel.exec({type: QWebChannelMessageTypes.idle});
+ }
+
+ this.debug = function(message)
+ {
+ channel.send({type: QWebChannelMessageTypes.debug, data: message});
+ };
+
+ channel.exec({type: QWebChannelMessageTypes.init}, function(data) {
+ for (var objectName in data) {
+ var object = new QObject(objectName, data[objectName], channel);
+ }
+ // now unwrap properties, which might reference other registered objects
+ for (var objectName in channel.objects) {
+ channel.objects[objectName].unwrapProperties();
+ }
+ if (initCallback) {
+ initCallback(channel);
+ }
+ channel.exec({type: QWebChannelMessageTypes.idle});
+ });
+};
+
+function QObject(name, data, webChannel)
+{
+ this.__id__ = name;
+ webChannel.objects[name] = this;
+
+ // List of callbacks that get invoked upon signal emission
+ this.__objectSignals__ = {};
+
+ // Cache of all properties, updated when a notify signal is emitted
+ this.__propertyCache__ = {};
+
+ var object = this;
+
+ // ----------------------------------------------------------------------
+
+ this.unwrapQObject = function(response)
+ {
+ if (response instanceof Array) {
+ // support list of objects
+ var ret = new Array(response.length);
+ for (var i = 0; i < response.length; ++i) {
+ ret[i] = object.unwrapQObject(response[i]);
+ }
+ return ret;
+ }
+ if (!response
+ || !response["__QObject*__"]
+ || response.id === undefined) {
+ return response;
+ }
+
+ var objectId = response.id;
+ if (webChannel.objects[objectId])
+ return webChannel.objects[objectId];
+
+ if (!response.data) {
+ console.error("Cannot unwrap unknown QObject " + objectId + " without data.");
+ return;
+ }
+
+ var qObject = new QObject( objectId, response.data, webChannel );
+ qObject.destroyed.connect(function() {
+ if (webChannel.objects[objectId] === qObject) {
+ delete webChannel.objects[objectId];
+ // reset the now deleted QObject to an empty {} object
+ // just assigning {} though would not have the desired effect, but the
+ // below also ensures all external references will see the empty map
+ // NOTE: this detour is necessary to workaround QTBUG-40021
+ var propertyNames = [];
+ for (var propertyName in qObject) {
+ propertyNames.push(propertyName);
+ }
+ for (var idx in propertyNames) {
+ delete qObject[propertyNames[idx]];
+ }
+ }
+ });
+ // here we are already initialized, and thus must directly unwrap the properties
+ qObject.unwrapProperties();
+ return qObject;
+ }
+
+ this.unwrapProperties = function()
+ {
+ for (var propertyIdx in object.__propertyCache__) {
+ object.__propertyCache__[propertyIdx] = object.unwrapQObject(object.__propertyCache__[propertyIdx]);
+ }
+ }
+
+ function addSignal(signalData, isPropertyNotifySignal)
+ {
+ var signalName = signalData[0];
+ var signalIndex = signalData[1];
+ object[signalName] = {
+ connect: function(callback) {
+ if (typeof(callback) !== "function") {
+ console.error("Bad callback given to connect to signal " + signalName);
+ return;
+ }
+
+ object.__objectSignals__[signalIndex] = object.__objectSignals__[signalIndex] || [];
+ object.__objectSignals__[signalIndex].push(callback);
+
+ if (!isPropertyNotifySignal && signalName !== "destroyed") {
+ // only required for "pure" signals, handled separately for properties in propertyUpdate
+ // also note that we always get notified about the destroyed signal
+ webChannel.exec({
+ type: QWebChannelMessageTypes.connectToSignal,
+ object: object.__id__,
+ signal: signalIndex
+ });
+ }
+ },
+ disconnect: function(callback) {
+ if (typeof(callback) !== "function") {
+ console.error("Bad callback given to disconnect from signal " + signalName);
+ return;
+ }
+ object.__objectSignals__[signalIndex] = object.__objectSignals__[signalIndex] || [];
+ var idx = object.__objectSignals__[signalIndex].indexOf(callback);
+ if (idx === -1) {
+ console.error("Cannot find connection of signal " + signalName + " to " + callback.name);
+ return;
+ }
+ object.__objectSignals__[signalIndex].splice(idx, 1);
+ if (!isPropertyNotifySignal && object.__objectSignals__[signalIndex].length === 0) {
+ // only required for "pure" signals, handled separately for properties in propertyUpdate
+ webChannel.exec({
+ type: QWebChannelMessageTypes.disconnectFromSignal,
+ object: object.__id__,
+ signal: signalIndex
+ });
+ }
+ }
+ };
+ }
+
+ /**
+ * Invokes all callbacks for the given signalname. Also works for property notify callbacks.
+ */
+ function invokeSignalCallbacks(signalName, signalArgs)
+ {
+ var connections = object.__objectSignals__[signalName];
+ if (connections) {
+ connections.forEach(function(callback) {
+ callback.apply(callback, signalArgs);
+ });
+ }
+ }
+
+ this.propertyUpdate = function(signals, propertyMap)
+ {
+ // update property cache
+ for (var propertyIndex in propertyMap) {
+ var propertyValue = propertyMap[propertyIndex];
+ object.__propertyCache__[propertyIndex] = propertyValue;
+ }
+
+ for (var signalName in signals) {
+ // Invoke all callbacks, as signalEmitted() does not. This ensures the
+ // property cache is updated before the callbacks are invoked.
+ invokeSignalCallbacks(signalName, signals[signalName]);
+ }
+ }
+
+ this.signalEmitted = function(signalName, signalArgs)
+ {
+ invokeSignalCallbacks(signalName, signalArgs);
+ }
+
+ function addMethod(methodData)
+ {
+ var methodName = methodData[0];
+ var methodIdx = methodData[1];
+ object[methodName] = function() {
+ var args = [];
+ var callback;
+ for (var i = 0; i < arguments.length; ++i) {
+ if (typeof arguments[i] === "function")
+ callback = arguments[i];
+ else
+ args.push(arguments[i]);
+ }
+
+ webChannel.exec({
+ "type": QWebChannelMessageTypes.invokeMethod,
+ "object": object.__id__,
+ "method": methodIdx,
+ "args": args
+ }, function(response) {
+ if (response !== undefined) {
+ var result = object.unwrapQObject(response);
+ if (callback) {
+ (callback)(result);
+ }
+ }
+ });
+ };
+ }
+
+ function bindGetterSetter(propertyInfo)
+ {
+ var propertyIndex = propertyInfo[0];
+ var propertyName = propertyInfo[1];
+ var notifySignalData = propertyInfo[2];
+ // initialize property cache with current value
+ // NOTE: if this is an object, it is not directly unwrapped as it might
+ // reference other QObject that we do not know yet
+ object.__propertyCache__[propertyIndex] = propertyInfo[3];
+
+ if (notifySignalData) {
+ if (notifySignalData[0] === 1) {
+ // signal name is optimized away, reconstruct the actual name
+ notifySignalData[0] = propertyName + "Changed";
+ }
+ addSignal(notifySignalData, true);
+ }
+
+ Object.defineProperty(object, propertyName, {
+ configurable: true,
+ get: function () {
+ var propertyValue = object.__propertyCache__[propertyIndex];
+ if (propertyValue === undefined) {
+ // This shouldn't happen
+ console.warn("Undefined value in property cache for property \"" + propertyName + "\" in object " + object.__id__);
+ }
+
+ return propertyValue;
+ },
+ set: function(value) {
+ if (value === undefined) {
+ console.warn("Property setter for " + propertyName + " called with undefined value!");
+ return;
+ }
+ object.__propertyCache__[propertyIndex] = value;
+ webChannel.exec({
+ "type": QWebChannelMessageTypes.setProperty,
+ "object": object.__id__,
+ "property": propertyIndex,
+ "value": value
+ });
+ }
+ });
+
+ }
+
+ // ----------------------------------------------------------------------
+
+ data.methods.forEach(addMethod);
+
+ data.properties.forEach(bindGetterSetter);
+
+ data.signals.forEach(function(signal) { addSignal(signal, false); });
+
+ for (var name in data.enums) {
+ object[name] = data.enums[name];
+ }
+}
+
+//required for use with nodejs
+if (typeof module === 'object') {
+ module.exports = {
+ QWebChannel: QWebChannel
+ };
+}
