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/*
* Copyright 2013 Canonical Ltd.
*
* This file is part of UnityWebappsQML.
*
* UnityWebappsQML is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 3.
*
* UnityWebappsQML is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
.pragma library
//
// \brief Creates a simple proxy object that bridges a UnityWebapps component with a given webview.
//
// The UnityWebApps component does not reach out directly to a webview but expects something that
// provides a simple interface of needed methods/functions. For the regular case though (binding
// to an existing webview) writing the interface manually is tedious, so this tool does it and creates
// the bridging object to a webview.
//
// \param webViewId
// \param handlers (optional) map of handlers for UnityWebApps events to the external world, supported events:
// {
// onAppRaised: function () {}
// }
//
function makeProxiesForQtWebViewBindee(webViewId, eventHandlers) {
var handlers = eventHandlers && typeof(eventHandlers) === 'object' ? eventHandlers : {};
function SignalConnectionDisposer() {
this._signalConnectionDisposers = [];
}
SignalConnectionDisposer.prototype.disposeAndCleanupAll = function() {
for(var i = 0; i < this._signalConnectionDisposers.length; ++i) {
if (typeof(this._signalConnectionDisposers[i]) === 'function') {
this._signalConnectionDisposers[i]();
}
}
this._signalConnectionDisposers = [];
};
SignalConnectionDisposer.prototype.addDisposer = function(d) {
if ( ! this._signalConnectionDisposers.some(function(elt) { return elt === d; }))
this._signalConnectionDisposers.push(d);
};
return (function (disposer) {
var makeSignalDisconnecter = function(sig, callback) {
return function () {
sig.disconnect(callback);
};
};
return {
injectUserScripts: function(userScriptUrls) {
var scripts = webViewId.experimental.userScripts;
for (var i = 0; i < userScriptUrls.length; ++i) {
scripts.push(userScriptUrls[i]);
}
webViewId.experimental.userScripts = scripts;
},
navigateTo: function(url) {
webViewId.url = url;
},
sendToPage: function (message) {
webViewId.experimental.postMessage(message);
},
loadingStartedConnect: function (onLoadingStarted) {
function handler(loadRequest) {
// bad bad,...
var LoadStartedStatus = 0;
if (loadRequest.status === LoadStartedStatus) {
onLoadingStarted();
}
};
webViewId.loadingChanged.connect(handler);
disposer.addDisposer(makeSignalDisconnecter(webViewId.loadingChanged, handler));
},
messageReceivedConnect: function (onMessageReceived) {
function handler(raw) {
onMessageReceived(JSON.parse(raw.data));
};
webViewId.experimental.messageReceived.connect(handler);
disposer.addDisposer(makeSignalDisconnecter(webViewId.experimental.messageReceived, handler));
},
// called from the UnityWebApps side
onAppRaised: function () {
if (handlers && handlers.onAppRaised)
handlers.onAppRaised();
},
// called from the UnityWebApps side
cleanup: function() {
disposer.disposeAndCleanupAll();
}
};
})(new SignalConnectionDisposer());
}
//
// \brief For a given list of objects returns a function that validates the presence and validity of the
// specified properties.
//
// \param props list of object properties to validate. Each property is an object w/ a 'name' and 'type' (as in typeof()).
//
function isIterableObject(obj) {
if (obj === undefined || obj === null) {
return false;
}
var t = typeof(obj);
var types = {'string': 0, 'function': 0, 'number': 0, 'undefined': 0, 'boolean': 0};
return types[t] === undefined;
};
//
// \brief For a given list of objects returns a function that validates the presence and validity of the
// specified properties.
//
// \param props list of object properties to validate. Each property is an object w/ a 'name' and 'type' (as in typeof()).
//
function formatUnityWebappsCall(type, serialized_args) {
return {target: "unity-webapps-call", name: type, args: serialized_args};
}
//
// \brief For a given list of objects returns a function that validates the presence and validity of the
// specified properties.
//
// \param props list of object properties to validate. Each property is an object w/ a 'name' and 'type' (as in typeof()).
//
function formatUnityWebappsCallbackCall(callbackid, args) {
return {target: 'unity-webapps-callback-call', id: callbackid, args: args};
};
//
// \brief For a given list of objects returns a function that validates the presence and validity of the
// specified properties.
//
// \param props list of object properties to validate. Each property is an object w/ a 'name' and 'type' (as in typeof()).
//
function isUnityWebappsCallbackCall(params) {
function _has(o,k) { return (k in o) && o[k] != null; }
return params != null && _has(params,"target") && _has(params,"args") && _has(params,"id") && params.target === 'unity-webapps-callback-call';
};
//
// \brief For a given list of objects returns a function that validates the presence and validity of the
// specified properties.
//
// \param props list of object properties to validate. Each property is an object w/ a 'name' and 'type' (as in typeof()).
//
function makePropertyValidator(props) {
return function (object) {
var _hasProperty = function(o, prop, type) { return o != null && (prop in o) && typeof (o[prop]) === type; };
return !props.some(function (prop) { return !_hasProperty(object, prop.name, prop.type); });
};
}
//
// \brief For a given list of objects returns a function that validates the presence and validity of the
// specified properties.
//
var makeCallbackManager = function () {
// TODO: remove magic name
var prepend = 'ubuntu-webapps-api';
var callbacks = {};
return {
store: function (callback) {
if (!callback || !(callback instanceof Function))
throw "Invalid callback";
var __gensym = function() { return prepend + Math.random(); };
var id = __gensym();
while (undefined !== callbacks[id]) {
id = __gensym();
}
callbacks[id] = callback;
return id;
}
,
get: function (id) {
return callbacks[id];
}
};
};
//
//
//
var toISODate = function(d) {
function pad(n) {
return n < 10 ? '0' + n : n;
}
return d.getUTCFullYear() + '-'
+ pad(d.getUTCMonth() + 1) + '-'
+ pad(d.getUTCDate()) + 'T'
+ pad(d.getUTCHours()) + ':'
+ pad(d.getUTCMinutes()) + ':'
+ pad(d.getUTCSeconds()) + 'Z';
};
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