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Mynij
Mynij
Commit 48124d3f authored by Alexandra Rogova's avatar Alexandra Rogova
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Merge branch 'master' of https://lab.nexedi.com/ARogova/Mynij

parents e40b0a1d e6d0c167
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/*
* js_channel is a very lightweight abstraction on top of
* postMessage which defines message formats and semantics
* to support interactions more rich than just message passing
* js_channel supports:
* + query/response - traditional rpc
* + query/update/response - incremental async return of results
* to a query
* + notifications - fire and forget
* + error handling
*
* js_channel is based heavily on json-rpc, but is focused at the
* problem of inter-iframe RPC.
*
* Message types:
* There are 5 types of messages that can flow over this channel,
* and you may determine what type of message an object is by
* examining its parameters:
* 1. Requests
* + integer id
* + string method
* + (optional) any params
* 2. Callback Invocations (or just "Callbacks")
* + integer id
* + string callback
* + (optional) params
* 3. Error Responses (or just "Errors)
* + integer id
* + string error
* + (optional) string message
* 4. Responses
* + integer id
* + (optional) any result
* 5. Notifications
* + string method
* + (optional) any params
*/
;var Channel = (function() {
"use strict";
// current transaction id, start out at a random *odd* number between 1 and a million
// There is one current transaction counter id per page, and it's shared between
// channel instances. That means of all messages posted from a single javascript
// evaluation context, we'll never have two with the same id.
var s_curTranId = Math.floor(Math.random()*1000001);
// no two bound channels in the same javascript evaluation context may have the same origin, scope, and window.
// futher if two bound channels have the same window and scope, they may not have *overlapping* origins
// (either one or both support '*'). This restriction allows a single onMessage handler to efficiently
// route messages based on origin and scope. The s_boundChans maps origins to scopes, to message
// handlers. Request and Notification messages are routed using this table.
// Finally, channels are inserted into this table when built, and removed when destroyed.
var s_boundChans = { };
// add a channel to s_boundChans, throwing if a dup exists
function s_addBoundChan(win, origin, scope, handler) {
function hasWin(arr) {
for (var i = 0; i < arr.length; i++) if (arr[i].win === win) return true;
return false;
}
// does she exist?
var exists = false;
if (origin === '*') {
// we must check all other origins, sadly.
for (var k in s_boundChans) {
if (!s_boundChans.hasOwnProperty(k)) continue;
if (k === '*') continue;
if (typeof s_boundChans[k][scope] === 'object') {
exists = hasWin(s_boundChans[k][scope]);
if (exists) break;
}
}
} else {
// we must check only '*'
if ((s_boundChans['*'] && s_boundChans['*'][scope])) {
exists = hasWin(s_boundChans['*'][scope]);
}
if (!exists && s_boundChans[origin] && s_boundChans[origin][scope])
{
exists = hasWin(s_boundChans[origin][scope]);
}
}
if (exists) throw "A channel is already bound to the same window which overlaps with origin '"+ origin +"' and has scope '"+scope+"'";
if (typeof s_boundChans[origin] != 'object') s_boundChans[origin] = { };
if (typeof s_boundChans[origin][scope] != 'object') s_boundChans[origin][scope] = [ ];
s_boundChans[origin][scope].push({win: win, handler: handler});
}
function s_removeBoundChan(win, origin, scope) {
var arr = s_boundChans[origin][scope];
for (var i = 0; i < arr.length; i++) {
if (arr[i].win === win) {
arr.splice(i,1);
}
}
if (s_boundChans[origin][scope].length === 0) {
delete s_boundChans[origin][scope];
}
}
function s_isArray(obj) {
if (Array.isArray) return Array.isArray(obj);
else {
return (obj.constructor.toString().indexOf("Array") != -1);
}
}
// No two outstanding outbound messages may have the same id, period. Given that, a single table
// mapping "transaction ids" to message handlers, allows efficient routing of Callback, Error, and
// Response messages. Entries are added to this table when requests are sent, and removed when
// responses are received.
var s_transIds = { };
// class singleton onMessage handler
// this function is registered once and all incoming messages route through here. This
// arrangement allows certain efficiencies, message data is only parsed once and dispatch
// is more efficient, especially for large numbers of simultaneous channels.
var s_onMessage = function(e) {
try {
var m = JSON.parse(e.data);
if (typeof m !== 'object' || m === null) throw "malformed";
} catch(e) {
// just ignore any posted messages that do not consist of valid JSON
return;
}
var w = e.source;
var o = e.origin;
var s, i, meth;
if (typeof m.method === 'string') {
var ar = m.method.split('::');
if (ar.length == 2) {
s = ar[0];
meth = ar[1];
} else {
meth = m.method;
}
}
if (typeof m.id !== 'undefined') i = m.id;
// w is message source window
// o is message origin
// m is parsed message
// s is message scope
// i is message id (or undefined)
// meth is unscoped method name
// ^^ based on these factors we can route the message
// if it has a method it's either a notification or a request,
// route using s_boundChans
if (typeof meth === 'string') {
var delivered = false;
if (s_boundChans[o] && s_boundChans[o][s]) {
for (var j = 0; j < s_boundChans[o][s].length; j++) {
if (s_boundChans[o][s][j].win === w) {
s_boundChans[o][s][j].handler(o, meth, m);
delivered = true;
break;
}
}
}
if (!delivered && s_boundChans['*'] && s_boundChans['*'][s]) {
for (var j = 0; j < s_boundChans['*'][s].length; j++) {
if (s_boundChans['*'][s][j].win === w) {
s_boundChans['*'][s][j].handler(o, meth, m);
break;
}
}
}
}
// otherwise it must have an id (or be poorly formed
else if (typeof i != 'undefined') {
if (s_transIds[i]) s_transIds[i](o, meth, m);
}
};
// Setup postMessage event listeners
if (window.addEventListener) window.addEventListener('message', s_onMessage, false);
else if(window.attachEvent) window.attachEvent('onmessage', s_onMessage);
/* a messaging channel is constructed from a window and an origin.
* the channel will assert that all messages received over the
* channel match the origin
*
* Arguments to Channel.build(cfg):
*
* cfg.window - the remote window with which we'll communicate
* cfg.origin - the expected origin of the remote window, may be '*'
* which matches any origin
* cfg.scope - the 'scope' of messages. a scope string that is
* prepended to message names. local and remote endpoints
* of a single channel must agree upon scope. Scope may
* not contain double colons ('::').
* cfg.debugOutput - A boolean value. If true and window.console.log is
* a function, then debug strings will be emitted to that
* function.
* cfg.debugOutput - A boolean value. If true and window.console.log is
* a function, then debug strings will be emitted to that
* function.
* cfg.postMessageObserver - A function that will be passed two arguments,
* an origin and a message. It will be passed these immediately
* before messages are posted.
* cfg.gotMessageObserver - A function that will be passed two arguments,
* an origin and a message. It will be passed these arguments
* immediately after they pass scope and origin checks, but before
* they are processed.
* cfg.onReady - A function that will be invoked when a channel becomes "ready",
* this occurs once both sides of the channel have been
* instantiated and an application level handshake is exchanged.
* the onReady function will be passed a single argument which is
* the channel object that was returned from build().
*/
return {
build: function(cfg) {
var debug = function(m) {
if (cfg.debugOutput && window.console && window.console.log) {
// try to stringify, if it doesn't work we'll let javascript's built in toString do its magic
try { if (typeof m !== 'string') m = JSON.stringify(m); } catch(e) { }
console.log("["+chanId+"] " + m);
}
};
/* browser capabilities check */
if (!window.postMessage) throw("jschannel cannot run this browser, no postMessage");
if (!window.JSON || !window.JSON.stringify || ! window.JSON.parse) {
throw("jschannel cannot run this browser, no JSON parsing/serialization");
}
/* basic argument validation */
if (typeof cfg != 'object') throw("Channel build invoked without a proper object argument");
if (!cfg.window || !cfg.window.postMessage) throw("Channel.build() called without a valid window argument");
/* we'd have to do a little more work to be able to run multiple channels that intercommunicate the same
* window... Not sure if we care to support that */
if (window === cfg.window) throw("target window is same as present window -- not allowed");
// let's require that the client specify an origin. if we just assume '*' we'll be
// propagating unsafe practices. that would be lame.
var validOrigin = false;
if (typeof cfg.origin === 'string') {
var oMatch;
if (cfg.origin === "*") validOrigin = true;
// allow valid domains under http and https. Also, trim paths off otherwise valid origins.
else if (null !== (oMatch = cfg.origin.match(/^https?:\/\/(?:[-a-zA-Z0-9_\.])+(?::\d+)?/))) {
cfg.origin = oMatch[0].toLowerCase();
validOrigin = true;
}
}
if (!validOrigin) throw ("Channel.build() called with an invalid origin");
if (typeof cfg.scope !== 'undefined') {
if (typeof cfg.scope !== 'string') throw 'scope, when specified, must be a string';
if (cfg.scope.split('::').length > 1) throw "scope may not contain double colons: '::'";
}
/* private variables */
// generate a random and psuedo unique id for this channel
var chanId = (function () {
var text = "";
var alpha = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
for(var i=0; i < 5; i++) text += alpha.charAt(Math.floor(Math.random() * alpha.length));
return text;
})();
// registrations: mapping method names to call objects
var regTbl = { };
// current oustanding sent requests
var outTbl = { };
// current oustanding received requests
var inTbl = { };
// are we ready yet? when false we will block outbound messages.
var ready = false;
var pendingQueue = [ ];
var createTransaction = function(id,origin,callbacks) {
var shouldDelayReturn = false;
var completed = false;
return {
origin: origin,
invoke: function(cbName, v) {
// verify in table
if (!inTbl[id]) throw "attempting to invoke a callback of a nonexistent transaction: " + id;
// verify that the callback name is valid
var valid = false;
for (var i = 0; i < callbacks.length; i++) if (cbName === callbacks[i]) { valid = true; break; }
if (!valid) throw "request supports no such callback '" + cbName + "'";
// send callback invocation
postMessage({ id: id, callback: cbName, params: v});
},
error: function(error, message) {
completed = true;
// verify in table
if (!inTbl[id]) throw "error called for nonexistent message: " + id;
// remove transaction from table
delete inTbl[id];
// send error
postMessage({ id: id, error: error, message: message });
},
complete: function(v) {
completed = true;
// verify in table
if (!inTbl[id]) throw "complete called for nonexistent message: " + id;
// remove transaction from table
delete inTbl[id];
// send complete
postMessage({ id: id, result: v });
},
delayReturn: function(delay) {
if (typeof delay === 'boolean') {
shouldDelayReturn = (delay === true);
}
return shouldDelayReturn;
},
completed: function() {
return completed;
}
};
};
var setTransactionTimeout = function(transId, timeout, method) {
return window.setTimeout(function() {
if (outTbl[transId]) {
// XXX: what if client code raises an exception here?
var msg = "timeout (" + timeout + "ms) exceeded on method '" + method + "'";
(1,outTbl[transId].error)("timeout_error", msg);
delete outTbl[transId];
delete s_transIds[transId];
}
}, timeout);
};
var onMessage = function(origin, method, m) {
// if an observer was specified at allocation time, invoke it
if (typeof cfg.gotMessageObserver === 'function') {
// pass observer a clone of the object so that our
// manipulations are not visible (i.e. method unscoping).
// This is not particularly efficient, but then we expect
// that message observers are primarily for debugging anyway.
try {
cfg.gotMessageObserver(origin, m);
} catch (e) {
debug("gotMessageObserver() raised an exception: " + e.toString());
}
}
// now, what type of message is this?
if (m.id && method) {
// a request! do we have a registered handler for this request?
if (regTbl[method]) {
var trans = createTransaction(m.id, origin, m.callbacks ? m.callbacks : [ ]);
inTbl[m.id] = { };
try {
// callback handling. we'll magically create functions inside the parameter list for each
// callback
if (m.callbacks && s_isArray(m.callbacks) && m.callbacks.length > 0) {
for (var i = 0; i < m.callbacks.length; i++) {
var path = m.callbacks[i];
var obj = m.params;
var pathItems = path.split('/');
for (var j = 0; j < pathItems.length - 1; j++) {
var cp = pathItems[j];
if (typeof obj[cp] !== 'object') obj[cp] = { };
obj = obj[cp];
}
obj[pathItems[pathItems.length - 1]] = (function() {
var cbName = path;
return function(params) {
return trans.invoke(cbName, params);
};
})();
}
}
var resp = regTbl[method](trans, m.params);
if (!trans.delayReturn() && !trans.completed()) trans.complete(resp);
} catch(e) {
// automagic handling of exceptions:
var error = "runtime_error";
var message = null;
// * if it's a string then it gets an error code of 'runtime_error' and string is the message
if (typeof e === 'string') {
message = e;
} else if (typeof e === 'object') {
// either an array or an object
// * if it's an array of length two, then array[0] is the code, array[1] is the error message
if (e && s_isArray(e) && e.length == 2) {
error = e[0];
message = e[1];
}
// * if it's an object then we'll look form error and message parameters
else if (typeof e.error === 'string') {
error = e.error;
if (!e.message) message = "";
else if (typeof e.message === 'string') message = e.message;
else e = e.message; // let the stringify/toString message give us a reasonable verbose error string
}
}
// message is *still* null, let's try harder
if (message === null) {
try {
message = JSON.stringify(e);
/* On MSIE8, this can result in 'out of memory', which
* leaves message undefined. */
if (typeof(message) == 'undefined')
message = e.toString();
} catch (e2) {
message = e.toString();
}
}
trans.error(error,message);
}
}
} else if (m.id && m.callback) {
if (!outTbl[m.id] ||!outTbl[m.id].callbacks || !outTbl[m.id].callbacks[m.callback])
{
debug("ignoring invalid callback, id:"+m.id+ " (" + m.callback +")");
} else {
// XXX: what if client code raises an exception here?
outTbl[m.id].callbacks[m.callback](m.params);
}
} else if (m.id) {
if (!outTbl[m.id]) {
debug("ignoring invalid response: " + m.id);
} else {
// XXX: what if client code raises an exception here?
if (m.error) {
(1,outTbl[m.id].error)(m.error, m.message);
} else {
if (m.result !== undefined) (1,outTbl[m.id].success)(m.result);
else (1,outTbl[m.id].success)();
}
delete outTbl[m.id];
delete s_transIds[m.id];
}
} else if (method) {
// tis a notification.
if (regTbl[method]) {
// yep, there's a handler for that.
// transaction has only origin for notifications.
regTbl[method]({ origin: origin }, m.params);
// if the client throws, we'll just let it bubble out
// what can we do? Also, here we'll ignore return values
}
}
};
// now register our bound channel for msg routing
s_addBoundChan(cfg.window, cfg.origin, ((typeof cfg.scope === 'string') ? cfg.scope : ''), onMessage);
// scope method names based on cfg.scope specified when the Channel was instantiated
var scopeMethod = function(m) {
if (typeof cfg.scope === 'string' && cfg.scope.length) m = [cfg.scope, m].join("::");
return m;
};
// a small wrapper around postmessage whose primary function is to handle the
// case that clients start sending messages before the other end is "ready"
var postMessage = function(msg, force) {
if (!msg) throw "postMessage called with null message";
// delay posting if we're not ready yet.
var verb = (ready ? "post " : "queue ");
debug(verb + " message: " + JSON.stringify(msg));
if (!force && !ready) {
pendingQueue.push(msg);
} else {
if (typeof cfg.postMessageObserver === 'function') {
try {
cfg.postMessageObserver(cfg.origin, msg);
} catch (e) {
debug("postMessageObserver() raised an exception: " + e.toString());
}
}
cfg.window.postMessage(JSON.stringify(msg), cfg.origin);
}
};
var onReady = function(trans, type) {
debug('ready msg received');
if (ready) throw "received ready message while in ready state. help!";
if (type === 'ping') {
chanId += '-R';
} else {
chanId += '-L';
}
obj.unbind('__ready'); // now this handler isn't needed any more.
ready = true;
debug('ready msg accepted.');
if (type === 'ping') {
obj.notify({ method: '__ready', params: 'pong' });
}
// flush queue
while (pendingQueue.length) {
postMessage(pendingQueue.pop());
}
// invoke onReady observer if provided
if (typeof cfg.onReady === 'function') cfg.onReady(obj);
};
var obj = {
// tries to unbind a bound message handler. returns false if not possible
unbind: function (method) {
if (regTbl[method]) {
if (!(delete regTbl[method])) throw ("can't delete method: " + method);
return true;
}
return false;
},
bind: function (method, cb) {
if (!method || typeof method !== 'string') throw "'method' argument to bind must be string";
if (!cb || typeof cb !== 'function') throw "callback missing from bind params";
if (regTbl[method]) throw "method '"+method+"' is already bound!";
regTbl[method] = cb;
return this;
},
call: function(m) {
if (!m) throw 'missing arguments to call function';
if (!m.method || typeof m.method !== 'string') throw "'method' argument to call must be string";
if (!m.success || typeof m.success !== 'function') throw "'success' callback missing from call";
// now it's time to support the 'callback' feature of jschannel. We'll traverse the argument
// object and pick out all of the functions that were passed as arguments.
var callbacks = { };
var callbackNames = [ ];
var pruneFunctions = function (path, obj) {
if (typeof obj === 'object') {
for (var k in obj) {
if (!obj.hasOwnProperty(k)) continue;
var np = path + (path.length ? '/' : '') + k;
if (typeof obj[k] === 'function') {
callbacks[np] = obj[k];
callbackNames.push(np);
delete obj[k];
} else if (typeof obj[k] === 'object') {
pruneFunctions(np, obj[k]);
}
}
}
};
pruneFunctions("", m.params);
// build a 'request' message and send it
var msg = { id: s_curTranId, method: scopeMethod(m.method), params: m.params };
if (callbackNames.length) msg.callbacks = callbackNames;
if (m.timeout)
// XXX: This function returns a timeout ID, but we don't do anything with it.
// We might want to keep track of it so we can cancel it using clearTimeout()
// when the transaction completes.
setTransactionTimeout(s_curTranId, m.timeout, scopeMethod(m.method));
// insert into the transaction table
outTbl[s_curTranId] = { callbacks: callbacks, error: m.error, success: m.success };
s_transIds[s_curTranId] = onMessage;
// increment current id
s_curTranId++;
postMessage(msg);
},
notify: function(m) {
if (!m) throw 'missing arguments to notify function';
if (!m.method || typeof m.method !== 'string') throw "'method' argument to notify must be string";
// no need to go into any transaction table
postMessage({ method: scopeMethod(m.method), params: m.params });
},
destroy: function () {
s_removeBoundChan(cfg.window, cfg.origin, ((typeof cfg.scope === 'string') ? cfg.scope : ''));
if (window.removeEventListener) window.removeEventListener('message', onMessage, false);
else if(window.detachEvent) window.detachEvent('onmessage', onMessage);
ready = false;
regTbl = { };
inTbl = { };
outTbl = { };
cfg.origin = null;
pendingQueue = [ ];
debug("channel destroyed");
chanId = "";
}
};
obj.bind('__ready', onReady);
setTimeout(function() {
postMessage({ method: scopeMethod('__ready'), params: "ping" }, true);
}, 0);
return obj;
}
};
})();
;/*
* DOMParser HTML extension
* 2012-09-04
*
* By Eli Grey, http://eligrey.com
* Public domain.
* NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
*/
/*! @source https://gist.github.com/1129031 */
(function (DOMParser) {
"use strict";
var DOMParser_proto = DOMParser.prototype,
real_parseFromString = DOMParser_proto.parseFromString;
// Firefox/Opera/IE throw errors on unsupported types
try {
// WebKit returns null on unsupported types
if ((new DOMParser()).parseFromString("", "text/html")) {
// text/html parsing is natively supported
return;
}
} catch (ignore) {}
DOMParser_proto.parseFromString = function (markup, type) {
var result, doc, doc_elt, first_elt;
if (/^\s*text\/html\s*(?:;|$)/i.test(type)) {
doc = document.implementation.createHTMLDocument("");
doc_elt = doc.documentElement;
doc_elt.innerHTML = markup;
first_elt = doc_elt.firstElementChild;
if (doc_elt.childElementCount === 1
&& first_elt.localName.toLowerCase() === "html") {
doc.replaceChild(first_elt, doc_elt);
}
result = doc;
} else {
result = real_parseFromString.apply(this, arguments);
}
return result;
};
}(DOMParser));
;// IE does not support have Document.prototype.contains.
if (typeof document.contains !== 'function') {
Document.prototype.contains = function(node) {
if (node === this || node.parentNode === this)
return true;
return this.documentElement.contains(node);
}
}
;(function (DOMParser) {
"use strict";
try {
if ((new window.URL("../a", "https://example.com/")).href === "https://example.com/a") {
return;
}
} catch (ignore) {}
var isAbsoluteOrDataURL = /^(?:[a-z]+:)?\/\/|data:/i;
function resolveUrl(url, base_url) {
var doc, base, link,
html = "<!doctype><html><head></head></html>";
if (url && base_url) {
doc = (new DOMParser()).parseFromString(html, 'text/html');
base = doc.createElement('base');
link = doc.createElement('link');
doc.head.appendChild(base);
doc.head.appendChild(link);
base.href = base_url;
link.href = url;
return link.href;
}
return url;
}
function URL(url, base) {
if (base !== undefined) {
if (!isAbsoluteOrDataURL.test(base)) {
throw new TypeError("Failed to construct 'URL': Invalid base URL");
}
url = resolveUrl(url, base);
}
if (!isAbsoluteOrDataURL.test(url)) {
throw new TypeError("Failed to construct 'URL': Invalid URL");
}
this.href = url;
}
URL.prototype.href = "";
if (window.URL && window.URL.createObjectURL) {
URL.createObjectURL = window.URL.createObjectURL;
}
if (window.URL && window.URL.revokeObjectURL) {
URL.revokeObjectURL = window.URL.revokeObjectURL;
}
window.URL = URL;
}(DOMParser));;/*
* Copyright 2012, Nexedi SA
*
* This program is free software: you can Use, Study, Modify and Redistribute
* it under the terms of the GNU General Public License version 3, or (at your
* option) any later version, as published by the Free Software Foundation.
*
* You can also Link and Combine this program with other software covered by
* the terms of any of the Free Software licenses or any of the Open Source
* Initiative approved licenses and Convey the resulting work. Corresponding
* source of such a combination shall include the source code for all other
* software used.
*
* This program is distributed WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* See COPYING file for full licensing terms.
* See https://www.nexedi.com/licensing for rationale and options.
*/
/*jslint nomen: true*/
/*
* renderJs - Generic Gadget library renderer.
* https://renderjs.nexedi.com/
*/
(function wrapRenderJS(document, window, RSVP, DOMParser, Channel,
MutationObserver, Node, FileReader, Blob, navigator,
Event, URL) {
"use strict";
/////////////////////////////////////////////////////////////////
// Error
/////////////////////////////////////////////////////////////////
function ScopeError(message) {
this.name = "scopeerror";
if ((message !== undefined) && (typeof message !== "string")) {
throw new TypeError('You must pass a string.');
}
this.message = message || "Scope Error";
}
ScopeError.prototype = new Error();
ScopeError.prototype.constructor = ScopeError;
function ensurePushableQueue(callback, argument_list, context) {
var result;
try {
result = callback.apply(context, argument_list);
} catch (e) {
return new RSVP.Queue()
.push(function returnPushableError() {
return RSVP.reject(e);
});
}
if (result instanceof RSVP.Queue) {
return result;
}
return new RSVP.Queue()
.push(function returnPushableResult() {
return result;
});
}
function readBlobAsDataURL(blob) {
var fr = new FileReader();
return new RSVP.Promise(function waitFormDataURLRead(resolve, reject) {
fr.addEventListener("load", function handleDataURLRead(evt) {
resolve(evt.target.result);
});
fr.addEventListener("error", reject);
fr.readAsDataURL(blob);
}, function cancelReadBlobAsDataURL() {
fr.abort();
});
}
function loopEventListener(target, type, useCapture, callback,
prevent_default) {
//////////////////////////
// Infinite event listener (promise is never resolved)
// eventListener is removed when promise is cancelled/rejected
//////////////////////////
var handle_event_callback,
callback_promise;
if (prevent_default === undefined) {
prevent_default = true;
}
function cancelResolver() {
if ((callback_promise !== undefined) &&
(typeof callback_promise.cancel === "function")) {
callback_promise.cancel();
}
}
function canceller() {
if (handle_event_callback !== undefined) {
target.removeEventListener(type, handle_event_callback, useCapture);
}
cancelResolver();
}
function itsANonResolvableTrap(resolve, reject) {
var result;
handle_event_callback = function handleEventCallback(evt) {
if (prevent_default) {
evt.stopPropagation();
evt.preventDefault();
}
cancelResolver();
try {
result = callback(evt);
} catch (e) {
result = RSVP.reject(e);
}
callback_promise = result;
new RSVP.Queue()
.push(function waitForEventCallbackResult() {
return result;
})
.push(undefined, function handleEventCallbackError(error) {
if (!(error instanceof RSVP.CancellationError)) {
canceller();
reject(error);
}
});
};
target.addEventListener(type, handle_event_callback, useCapture);
}
return new RSVP.Promise(itsANonResolvableTrap, canceller);
}
function promiseAnimationFrame() {
var request_id;
function canceller() {
window.cancelAnimationFrame(request_id);
}
function resolver(resolve) {
request_id = window.requestAnimationFrame(resolve);
}
return new RSVP.Promise(resolver, canceller);
}
function ajax(url) {
var xhr;
function resolver(resolve, reject) {
function handler() {
try {
if (xhr.readyState === 0) {
// UNSENT
reject(xhr);
} else if (xhr.readyState === 4) {
// DONE
if ((xhr.status < 200) || (xhr.status >= 300) ||
(!/^text\/html[;]?/.test(
xhr.getResponseHeader("Content-Type") || ""
))) {
reject(xhr);
} else {
resolve(xhr);
}
}
} catch (e) {
reject(e);
}
}
xhr = new XMLHttpRequest();
xhr.open("GET", url);
xhr.onreadystatechange = handler;
xhr.setRequestHeader('Accept', 'text/html');
xhr.withCredentials = true;
xhr.send();
}
function canceller() {
if ((xhr !== undefined) && (xhr.readyState !== xhr.DONE)) {
xhr.abort();
}
}
return new RSVP.Promise(resolver, canceller);
}
var gadget_model_defer_dict = {},
javascript_registration_dict = {},
stylesheet_registration_dict = {},
gadget_loading_klass_list = [],
renderJS,
Monitor,
Mutex,
scope_increment = 0,
isAbsoluteOrDataURL = new RegExp('^(?:[a-z]+:)?//|data:', 'i'),
is_page_unloaded = false,
error_list = [],
all_dependency_loaded_deferred;
window.addEventListener('error', function handleGlobalError(error) {
error_list.push(error);
});
window.addEventListener('beforeunload', function handleBeforeUnload() {
// XXX If another listener cancel the page unload,
// it will not restore renderJS crash report
is_page_unloaded = true;
});
/////////////////////////////////////////////////////////////////
// Mutex
/////////////////////////////////////////////////////////////////
Mutex = function createMutex() {
if (!(this instanceof Mutex)) {
return new Mutex();
}
this._latest_promise = null;
};
Mutex.prototype = {
constructor: Mutex,
lockAndRun: function lockMutexAndRun(callback) {
var previous_promise = this._latest_promise;
if (previous_promise === null) {
this._latest_promise = RSVP.resolve(callback());
} else {
this._latest_promise = this._latest_promise
.always(function () {
return callback();
});
}
return this._latest_promise;
}
};
/////////////////////////////////////////////////////////////////
// Helper functions
/////////////////////////////////////////////////////////////////
function removeHash(url) {
var index = url.indexOf('#');
if (index > 0) {
url = url.substring(0, index);
}
return url;
}
function letsCrash(e) {
var i,
body,
container,
paragraph,
link,
error;
if (is_page_unloaded) {
/*global console*/
console.info('-- Error dropped, as page is unloaded');
console.info(e);
return;
}
error_list.push(e);
// Add error handling stack
error_list.push(new Error('stopping renderJS'));
body = document.getElementsByTagName('body')[0];
while (body.firstChild) {
body.removeChild(body.firstChild);
}
container = document.createElement("section");
paragraph = document.createElement("h1");
paragraph.textContent = 'Unhandled Error';
container.appendChild(paragraph);
paragraph = document.createElement("p");
paragraph.textContent = 'Please report this error to the support team';
container.appendChild(paragraph);
paragraph = document.createElement("p");
paragraph.textContent = 'Location: ';
link = document.createElement("a");
link.href = link.textContent = window.location.toString();
paragraph.appendChild(link);
container.appendChild(paragraph);
paragraph = document.createElement("p");
paragraph.textContent = 'User-agent: ' + navigator.userAgent;
container.appendChild(paragraph);
paragraph = document.createElement("p");
paragraph.textContent = 'Date: ' + new Date(Date.now()).toISOString();
container.appendChild(paragraph);
body.appendChild(container);
for (i = 0; i < error_list.length; i += 1) {
error = error_list[i];
if (error instanceof Event) {
error = {
string: error.toString(),
message: error.message,
type: error.type,
target: error.target
};
if (error.target !== undefined) {
error_list.splice(i + 1, 0, error.target);
}
}
if (error instanceof XMLHttpRequest) {
error = {
message: error.toString(),
readyState: error.readyState,
status: error.status,
statusText: error.statusText,
response: error.response,
responseUrl: error.responseUrl,
response_headers: error.getAllResponseHeaders()
};
}
if (error.constructor === Array ||
error.constructor === String ||
error.constructor === Object) {
try {
error = JSON.stringify(error);
} catch (ignore) {
}
}
container = document.createElement("section");
paragraph = document.createElement("h2");
paragraph.textContent = error.message || error;
container.appendChild(paragraph);
if (error.fileName !== undefined) {
paragraph = document.createElement("p");
paragraph.textContent = 'File: ' +
error.fileName +
': ' + error.lineNumber;
container.appendChild(paragraph);
}
if (error.stack !== undefined) {
paragraph = document.createElement("pre");
paragraph.textContent = 'Stack: ' + error.stack;
container.appendChild(paragraph);
}
body.appendChild(container);
}
// XXX Do not crash the application if it fails
// Where to write the error?
/*global console*/
console.error(e.stack);
console.error(e);
}
/////////////////////////////////////////////////////////////////
// Service Monitor promise
/////////////////////////////////////////////////////////////////
function ResolvedMonitorError(message) {
this.name = "resolved";
if ((message !== undefined) && (typeof message !== "string")) {
throw new TypeError('You must pass a string.');
}
this.message = message || "Default Message";
}
ResolvedMonitorError.prototype = new Error();
ResolvedMonitorError.prototype.constructor = ResolvedMonitorError;
Monitor = function createMonitor() {
var monitor = this,
promise_list = [],
promise,
reject,
resolved;
if (!(this instanceof Monitor)) {
return new Monitor();
}
function canceller() {
var len = promise_list.length,
i;
for (i = 0; i < len; i += 1) {
promise_list[i].cancel();
}
// Clean it to speed up other canceller run
promise_list = [];
}
promise = new RSVP.Promise(function promiseMonitor(done, fail) {
reject = function rejectMonitor(rejectedReason) {
if (resolved) {
return;
}
monitor.isRejected = true;
monitor.rejectedReason = rejectedReason;
resolved = true;
canceller();
return fail(rejectedReason);
};
}, canceller);
monitor.cancel = function cancelMonitor() {
if (resolved) {
return;
}
resolved = true;
promise.cancel();
promise.fail(function rejectMonitorPromise(rejectedReason) {
monitor.isRejected = true;
monitor.rejectedReason = rejectedReason;
});
};
monitor.then = promise.then.bind(promise);
monitor.fail = promise.fail.bind(promise);
monitor.monitor = function startMonitor(promise_to_monitor) {
if (resolved) {
throw new ResolvedMonitorError();
}
var queue = new RSVP.Queue()
.push(function waitForPromiseToMonitor() {
return promise_to_monitor;
})
.push(function handlePromiseToMonitorSuccess(fulfillmentValue) {
// Promise to monitor is fullfilled, remove it from the list
var len = promise_list.length,
sub_promise_to_monitor,
new_promise_list = [],
i;
for (i = 0; i < len; i += 1) {
sub_promise_to_monitor = promise_list[i];
if (!(sub_promise_to_monitor.isFulfilled ||
sub_promise_to_monitor.isRejected)) {
new_promise_list.push(sub_promise_to_monitor);
}
}
promise_list = new_promise_list;
}, function handlePromiseToMonitorError(rejectedReason) {
if (rejectedReason instanceof RSVP.CancellationError) {
if (!(promise_to_monitor.isFulfilled &&
promise_to_monitor.isRejected)) {
// The queue could be cancelled before the first push is run
promise_to_monitor.cancel();
}
}
reject(rejectedReason);
throw rejectedReason;
});
promise_list.push(queue);
return this;
};
};
Monitor.prototype = Object.create(RSVP.Promise.prototype);
Monitor.prototype.constructor = Monitor;
/////////////////////////////////////////////////////////////////
// RenderJSGadget
/////////////////////////////////////////////////////////////////
function RenderJSGadget() {
if (!(this instanceof RenderJSGadget)) {
return new RenderJSGadget();
}
}
RenderJSGadget.prototype.__title = "";
RenderJSGadget.prototype.__interface_list = [];
RenderJSGadget.prototype.__path = "";
RenderJSGadget.prototype.__html = "";
RenderJSGadget.prototype.__required_css_list = [];
RenderJSGadget.prototype.__required_js_list = [];
function deleteGadgetMonitor(g) {
if (g.hasOwnProperty('__monitor')) {
g.__monitor.cancel();
delete g.__monitor;
g.__job_list = [];
}
}
function createGadgetMonitor(g) {
g.__monitor = new Monitor();
g.__job_dict = {};
g.__job_triggered = false;
g.__monitor.fail(function handleGadgetMonitorError(error) {
if (!(error instanceof RSVP.CancellationError)) {
return g.aq_reportServiceError(error);
}
// Crash the application if the acquisition generates an error.
}).fail(letsCrash);
}
function clearGadgetInternalParameters(gadget) {
gadget.__sub_gadget_dict = {};
gadget.__job_list = [];
if (gadget.__json_state !== undefined) {
gadget.state = JSON.parse(gadget.__json_state);
}
}
function loadSubGadgetDOMDeclaration() {
var element_list = this.element.querySelectorAll('[data-gadget-url]'),
element,
promise_list = [],
scope,
url,
sandbox,
i,
context = this;
function prepareReportGadgetDeclarationError(scope) {
return function reportGadgetDeclarationError(error) {
var aq_dict = context.__acquired_method_dict || {},
method_name = 'reportGadgetDeclarationError';
if (aq_dict.hasOwnProperty(method_name)) {
return aq_dict[method_name].apply(context,
[arguments, scope]);
}
throw error;
};
}
for (i = 0; i < element_list.length; i += 1) {
element = element_list[i];
scope = element.getAttribute("data-gadget-scope");
url = element.getAttribute("data-gadget-url");
sandbox = element.getAttribute("data-gadget-sandbox");
if (url !== null) {
promise_list.push(
context.declareGadget(url, {
element: element,
scope: scope || undefined,
sandbox: sandbox || undefined
})
.push(undefined, prepareReportGadgetDeclarationError(scope))
);
}
}
return RSVP.all(promise_list);
}
RenderJSGadget.__ready_list = [];
RenderJSGadget.ready = function ready(callback) {
this.__ready_list.push(callback);
return this;
};
RenderJSGadget.setState = function setState(state_dict) {
this.prototype.__json_state = JSON.stringify(state_dict);
return this;
};
RenderJSGadget.onStateChange = function onStateChange(callback) {
this.prototype.__state_change_callback = callback;
return this;
};
RenderJSGadget.__service_list = [];
RenderJSGadget.declareService = function declareService(callback) {
this.__service_list.push(callback);
return this;
};
RenderJSGadget.onEvent = function onEvent(type, callback, use_capture,
prevent_default) {
this.__service_list.push(function startLoopEventListenerService() {
return loopEventListener(this.element, type, use_capture,
callback.bind(this), prevent_default);
});
return this;
};
RenderJSGadget.onLoop = function onLoop(callback, delay) {
if (delay === undefined) {
delay = 0;
}
this.__service_list.push(function handleServiceCallback() {
var queue_loop = new RSVP.Queue(),
context = this,
wait = function waitForLoopIteration() {
queue_loop
.push(function waitNextOnLoopDelay() {
return RSVP.delay(delay);
})
.push(function waitNextOnLoopAnimationFrame() {
// Only loop when the app has the focus
return promiseAnimationFrame();
})
.push(function executeOnLoopCallback() {
return callback.apply(context, []);
})
.push(wait);
};
wait();
return queue_loop;
});
return this;
};
function runJob(gadget, name, callback, argument_list) {
var job_promise = ensurePushableQueue(callback, argument_list, gadget);
if (gadget.__job_dict.hasOwnProperty(name)) {
gadget.__job_dict[name].cancel();
}
gadget.__job_dict[name] = job_promise;
gadget.__monitor.monitor(new RSVP.Queue()
.push(function waitForJobPromise() {
return job_promise;
})
.push(undefined, function handleJobError(error) {
if (!(error instanceof RSVP.CancellationError)) {
throw error;
}
}));
}
function startService(gadget) {
if (((gadget.constructor.__service_list.length === 0) &&
(!gadget.constructor.__job_declared)) ||
(gadget.hasOwnProperty('__monitor'))) {
return;
}
createGadgetMonitor(gadget);
gadget.__monitor.monitor(new RSVP.Queue()
.push(function monitorAllServiceList() {
var i,
service_list = gadget.constructor.__service_list,
job_list = gadget.__job_list;
for (i = 0; i < service_list.length; i += 1) {
gadget.__monitor.monitor(service_list[i].apply(gadget));
}
for (i = 0; i < job_list.length; i += 1) {
runJob(gadget, job_list[i][0], job_list[i][1], job_list[i][2]);
}
gadget.__job_list = [];
gadget.__job_triggered = true;
})
);
}
function registerMethod(gadget_klass, method_name, method_type) {
if (!gadget_klass.hasOwnProperty('__method_type_dict')) {
gadget_klass.__method_type_dict = {};
}
gadget_klass.__method_type_dict[method_name] = method_type;
}
/////////////////////////////////////////////////////////////////
// RenderJSGadget.declareJob
// gadget internal method, which trigger execution
// of a function inside a service
/////////////////////////////////////////////////////////////////
RenderJSGadget.declareJob = function declareJob(name, callback) {
this.__job_declared = true;
this.prototype[name] = function triggerJob() {
var context = this,
argument_list = arguments;
if (context.__job_triggered) {
runJob(context, name, callback, argument_list);
} else {
context.__job_list.push([name, callback, argument_list]);
}
};
registerMethod(this, name, 'job');
// Allow chain
return this;
};
/////////////////////////////////////////////////////////////////
// RenderJSGadget.declareMethod
/////////////////////////////////////////////////////////////////
RenderJSGadget.declareMethod = function declareMethod(name, callback,
options) {
this.prototype[name] = function triggerMethod() {
var context = this,
argument_list = arguments,
mutex_name;
function waitForMethodCallback() {
return callback.apply(context, argument_list);
}
if ((options !== undefined) && (options.hasOwnProperty('mutex'))) {
mutex_name = '__mutex_' + options.mutex;
if (!context.hasOwnProperty(mutex_name)) {
context[mutex_name] = new Mutex();
}
return ensurePushableQueue(context[mutex_name].lockAndRun,
[waitForMethodCallback],
context[mutex_name]);
}
return ensurePushableQueue(callback, argument_list, context);
};
registerMethod(this, name, 'method');
// Allow chain
return this;
};
RenderJSGadget
.declareMethod('getInterfaceList', function getInterfaceList() {
// Returns the list of gadget prototype
return this.__interface_list;
})
.declareMethod('getMethodList', function getMethodList(type) {
// Returns the list of gadget methods
var key,
method_list = [],
method_dict = this.constructor.__method_type_dict || {};
for (key in method_dict) {
if (method_dict.hasOwnProperty(key)) {
if ((type === undefined) ||
(type === method_dict[key])) {
method_list.push(key);
}
}
}
return method_list;
})
.declareMethod('getRequiredCSSList', function getRequiredCSSList() {
// Returns a list of CSS required by the gadget
return this.__required_css_list;
})
.declareMethod('getRequiredJSList', function getRequiredJSList() {
// Returns a list of JS required by the gadget
return this.__required_js_list;
})
.declareMethod('getPath', function getPath() {
// Returns the path of the code of a gadget
return this.__path;
})
.declareMethod('getTitle', function getTitle() {
// Returns the title of a gadget
return this.__title;
})
.declareMethod('getElement', function getElement() {
// Returns the DOM Element of a gadget
// XXX Kept for compatibility. Use element property directly
if (this.element === undefined) {
throw new Error("No element defined");
}
return this.element;
})
.declareMethod('changeState', function changeState(state_dict) {
var context = this,
key,
modified = false,
previous_cancelled = context.hasOwnProperty('__modification_dict'),
modification_dict;
if (previous_cancelled) {
modification_dict = context.__modification_dict;
modified = true;
} else {
modification_dict = {};
}
for (key in state_dict) {
if (state_dict.hasOwnProperty(key) &&
(state_dict[key] !== context.state[key])) {
context.state[key] = state_dict[key];
modification_dict[key] = state_dict[key];
modified = true;
}
}
if (modified && context.__state_change_callback !== undefined) {
context.__modification_dict = modification_dict;
return ensurePushableQueue(
context.__state_change_callback,
[modification_dict],
context
)
.push(function handleStateChangeSuccess(result) {
delete context.__modification_dict;
return result;
});
}
}, {mutex: 'changestate'});
/////////////////////////////////////////////////////////////////
// RenderJSGadget.declareAcquiredMethod
/////////////////////////////////////////////////////////////////
function acquire(child_gadget, method_name, argument_list) {
var gadget = this,
// Do not specify default __acquired_method_dict on prototype
// to prevent modifying this default value (with
// allowPublicAcquiredMethod for example)
aq_dict = gadget.__acquired_method_dict || {},
key,
gadget_scope;
if (!aq_dict.hasOwnProperty(method_name)) {
// "aq_dynamic is not defined"
return gadget.__aq_parent(method_name, argument_list);
}
for (key in gadget.__sub_gadget_dict) {
if (gadget.__sub_gadget_dict.hasOwnProperty(key)) {
if (gadget.__sub_gadget_dict[key] === child_gadget) {
gadget_scope = key;
}
}
}
return ensurePushableQueue(
aq_dict[method_name],
[argument_list, gadget_scope],
gadget
)
.push(undefined, function handleAcquireMethodError(error) {
if (error instanceof renderJS.AcquisitionError) {
return gadget.__aq_parent(method_name, argument_list);
}
throw error;
});
}
RenderJSGadget.declareAcquiredMethod =
function declareAcquiredMethod(name, method_name_to_acquire) {
this.prototype[name] = function acquireMethod() {
var argument_list = Array.prototype.slice.call(arguments, 0),
gadget = this;
return ensurePushableQueue(
gadget.__aq_parent,
[method_name_to_acquire, argument_list],
gadget
);
};
registerMethod(this, name, 'acquired_method');
// Allow chain
return this;
};
RenderJSGadget.declareAcquiredMethod("aq_reportServiceError",
"reportServiceError");
RenderJSGadget.declareAcquiredMethod("aq_reportGadgetDeclarationError",
"reportGadgetDeclarationError");
/////////////////////////////////////////////////////////////////
// RenderJSGadget.allowPublicAcquisition
/////////////////////////////////////////////////////////////////
RenderJSGadget.allowPublicAcquisition =
function allowPublicAcquisition(method_name, callback) {
this.prototype.__acquired_method_dict[method_name] = callback;
// Allow chain
return this;
};
// Set aq_parent on gadget_instance which call acquire on parent_gadget
function setAqParent(gadget_instance, parent_gadget) {
gadget_instance.__aq_parent =
function __aq_parent(method_name, argument_list) {
return acquire.apply(parent_gadget, [gadget_instance, method_name,
argument_list]);
};
}
/////////////////////////////////////////////////////////////////
// RenderJSEmbeddedGadget
/////////////////////////////////////////////////////////////////
// Class inheritance
function RenderJSEmbeddedGadget() {
if (!(this instanceof RenderJSEmbeddedGadget)) {
return new RenderJSEmbeddedGadget();
}
RenderJSGadget.call(this);
}
RenderJSEmbeddedGadget.__ready_list = [];
RenderJSEmbeddedGadget.__service_list =
RenderJSGadget.__service_list.slice();
RenderJSEmbeddedGadget.ready =
RenderJSGadget.ready;
RenderJSEmbeddedGadget.setState =
RenderJSGadget.setState;
RenderJSEmbeddedGadget.onStateChange =
RenderJSGadget.onStateChange;
RenderJSEmbeddedGadget.declareService =
RenderJSGadget.declareService;
RenderJSEmbeddedGadget.onEvent =
RenderJSGadget.onEvent;
RenderJSEmbeddedGadget.onLoop =
RenderJSGadget.onLoop;
RenderJSEmbeddedGadget.prototype = new RenderJSGadget();
RenderJSEmbeddedGadget.prototype.constructor = RenderJSEmbeddedGadget;
/////////////////////////////////////////////////////////////////
// privateDeclarePublicGadget
/////////////////////////////////////////////////////////////////
function createPrivateInstanceFromKlass(Klass, options, parent_gadget,
old_element) {
// Get the gadget class and instanciate it
var i,
gadget_instance,
template_node_list = Klass.__template_element.body.childNodes,
fragment = document.createDocumentFragment();
gadget_instance = new Klass();
gadget_instance.element = options.element;
gadget_instance.state = {};
for (i = 0; i < template_node_list.length; i += 1) {
fragment.appendChild(
template_node_list[i].cloneNode(true)
);
}
gadget_instance.element.appendChild(fragment);
setAqParent(gadget_instance, parent_gadget);
clearGadgetInternalParameters(gadget_instance);
if (old_element !== undefined) {
// Add gadget to the DOM if needed
// Do it when all DOM modifications are done
old_element.parentNode.replaceChild(options.element,
old_element);
}
return gadget_instance;
}
function privateDeclarePublicGadget(url, options, parent_gadget,
old_element) {
var klass = renderJS.declareGadgetKlass(url);
// gadget loading should not be interrupted
// if not, gadget's definition will not be complete
//.then will return another promise
//so loading_klass_promise can't be cancel
if (typeof klass.then === 'function') {
return klass.then(function createAsyncPrivateInstanceFromKlass(Klass) {
return createPrivateInstanceFromKlass(Klass, options, parent_gadget,
old_element);
});
}
return createPrivateInstanceFromKlass(klass, options, parent_gadget,
old_element);
}
/////////////////////////////////////////////////////////////////
// RenderJSIframeGadget
/////////////////////////////////////////////////////////////////
function RenderJSIframeGadget() {
if (!(this instanceof RenderJSIframeGadget)) {
return new RenderJSIframeGadget();
}
RenderJSGadget.call(this);
}
RenderJSIframeGadget.__ready_list = [];
RenderJSIframeGadget.ready =
RenderJSGadget.ready;
RenderJSIframeGadget.setState =
RenderJSGadget.setState;
RenderJSIframeGadget.onStateChange =
RenderJSGadget.onStateChange;
RenderJSIframeGadget.__service_list = [];
RenderJSIframeGadget.declareService =
RenderJSGadget.declareService;
RenderJSIframeGadget.onEvent =
RenderJSGadget.onEvent;
RenderJSIframeGadget.onLoop =
RenderJSGadget.onLoop;
RenderJSIframeGadget.prototype = new RenderJSGadget();
RenderJSIframeGadget.prototype.constructor = RenderJSIframeGadget;
/////////////////////////////////////////////////////////////////
// privateDeclareIframeGadget
/////////////////////////////////////////////////////////////////
function privateDeclareIframeGadget(url, options, parent_gadget,
old_element) {
var gadget_instance,
iframe,
iframe_loading_deferred = RSVP.defer();
if (old_element === undefined) {
throw new Error("DOM element is required to create Iframe Gadget " +
url);
}
// Check if the element is attached to the DOM
if (!document.contains(old_element)) {
throw new Error("The parent element is not attached to the DOM for " +
url);
}
gadget_instance = new RenderJSIframeGadget();
setAqParent(gadget_instance, parent_gadget);
iframe = document.createElement("iframe");
iframe.addEventListener('error', function handleIframeError(error) {
iframe_loading_deferred.reject(error);
});
iframe.addEventListener('load', function handleIframeLoad() {
return RSVP.timeout(5000)
.fail(function triggerIframeTimeout() {
iframe_loading_deferred.reject(
new Error('Timeout while loading: ' + url)
);
});
});
// gadget_instance.element.setAttribute("seamless", "seamless");
iframe.setAttribute("src", url);
gadget_instance.__path = url;
gadget_instance.element = options.element;
gadget_instance.state = {};
options.element.appendChild(iframe);
clearGadgetInternalParameters(gadget_instance);
// Add gadget to the DOM if needed
// Do it when all DOM modifications are done
old_element.parentNode.replaceChild(options.element,
old_element);
// XXX Manage unbind when deleting the gadget
// Create the communication channel with the iframe
gadget_instance.__chan = Channel.build({
window: iframe.contentWindow,
// origin: (new URL(url, window.location)).origin,
origin: '*',
scope: "renderJS"
});
// Create new method from the declareMethod call inside the iframe
gadget_instance.__chan.bind(
"declareMethod",
function handleChannelDeclareMethod(trans, method_name) {
gadget_instance[method_name] = function triggerChannelDeclareMethod() {
var argument_list = arguments,
wait_promise = new RSVP.Promise(
function handleChannelCall(resolve, reject) {
gadget_instance.__chan.call({
method: "methodCall",
params: [
method_name,
Array.prototype.slice.call(argument_list, 0)],
success: resolve,
error: reject
});
}
);
return ensurePushableQueue(function waitForChannelCall() {
return wait_promise;
});
};
return "OK";
}
);
// Wait for the iframe to be loaded before continuing
gadget_instance.__chan.bind("ready", function handleChannelReady(trans) {
iframe_loading_deferred.resolve(gadget_instance);
return "OK";
});
gadget_instance.__chan.bind("failed",
function handleChannelFail(trans, params) {
iframe_loading_deferred.reject(params);
return "OK";
});
gadget_instance.__chan.bind("acquire",
function handleChannelAcquire(trans, params) {
new RSVP.Queue()
.push(function () {
return gadget_instance.__aq_parent.apply(gadget_instance, params);
})
.then(trans.complete)
.fail(function handleChannelAcquireError(e) {
trans.error(e.toString());
});
trans.delayReturn(true);
});
return iframe_loading_deferred.promise;
}
/////////////////////////////////////////////////////////////////
// privateDeclareDataUrlGadget
/////////////////////////////////////////////////////////////////
function privateDeclareDataUrlGadget(url, options, parent_gadget,
old_element) {
return new RSVP.Queue()
.push(function waitForDataUrlAjax() {
return ajax(url);
})
.push(function handleDataURLAjaxResponse(xhr) {
// Insert a "base" element, in order to resolve all relative links
// which could get broken with a data url
var doc = (new DOMParser()).parseFromString(xhr.responseText,
'text/html'),
base = doc.createElement('base'),
blob;
base.href = url;
doc.head.insertBefore(base, doc.head.firstChild);
blob = new Blob([doc.documentElement.outerHTML],
{type: "text/html;charset=UTF-8"});
return readBlobAsDataURL(blob);
})
.push(function handleDataURL(data_url) {
return privateDeclareIframeGadget(data_url, options, parent_gadget,
old_element);
});
}
/////////////////////////////////////////////////////////////////
// RenderJSGadget.declareGadget
/////////////////////////////////////////////////////////////////
function setGadgetInstanceHTMLContext(gadget_instance, options,
parent_gadget, url,
old_element, scope) {
var i,
queue;
function ready_executable_wrapper(fct) {
return function executeReadyWrapper() {
return fct.call(gadget_instance, gadget_instance);
};
}
function ready_wrapper() {
// Always set the parent reference when all ready are finished
// in case the gadget declaration is cancelled
// (and ready are not finished)
gadget_instance.element._gadget = gadget_instance;
parent_gadget.__sub_gadget_dict[scope] = gadget_instance;
if (document.contains(gadget_instance.element)) {
startService(gadget_instance);
}
// Always return the gadget instance after ready function
return gadget_instance;
}
if (gadget_instance.constructor.__ready_list.length) {
queue = new RSVP.Queue();
// Trigger calling of all ready callback
for (i = 0; i < gadget_instance.constructor.__ready_list.length;
i += 1) {
// Put a timeout?
queue.push(ready_executable_wrapper(
gadget_instance.constructor.__ready_list[i]
));
}
queue.push(ready_wrapper);
return queue;
}
return ready_wrapper();
}
RenderJSGadget
.declareMethod('declareGadget', function declareGadget(url, options) {
var parent_gadget = this,
method,
result,
scope,
old_element;
if (options === undefined) {
options = {};
}
if (options.sandbox === undefined) {
options.sandbox = "public";
}
if (options.element === undefined) {
options.element = document.createElement('div');
} else if (typeof options.element === 'string') {
options.element = document.createElement(options.element);
} else if (options.element.parentNode) {
old_element = options.element;
// Clean up the element content
// Remove all existing event listener
options.element = old_element.cloneNode(false);
} else {
throw new Error('No need to manually provide a DOM element ' +
'without a parentNode: ' + url);
}
// transform url to absolute url if it is relative
url = renderJS.getAbsoluteURL(url, this.__path);
// Store local reference to the gadget instance
scope = options.scope;
if (scope === undefined) {
scope = 'RJS_' + scope_increment;
scope_increment += 1;
while (parent_gadget.__sub_gadget_dict.hasOwnProperty(scope)) {
scope = 'RJS_' + scope_increment;
scope_increment += 1;
}
}
options.element.setAttribute("data-gadget-scope", scope);
// Put some attribute to ease page layout comprehension
options.element.setAttribute("data-gadget-url", url);
options.element.setAttribute("data-gadget-sandbox", options.sandbox);
if (options.sandbox === "public") {
method = privateDeclarePublicGadget;
} else if (options.sandbox === "iframe") {
method = privateDeclareIframeGadget;
} else if (options.sandbox === "dataurl") {
method = privateDeclareDataUrlGadget;
} else {
throw new Error("Unsupported sandbox options '" +
options.sandbox + "'");
}
result = method(url, options, parent_gadget, old_element);
// Set the HTML context
if (typeof result.then === 'function') {
return new RSVP.Queue()
.push(function () {
return result;
})
.push(function setAsyncGadgetInstanceHTMLContext(gadget_instance) {
return setGadgetInstanceHTMLContext(gadget_instance, options,
parent_gadget, url,
old_element, scope);
});
}
return setGadgetInstanceHTMLContext(result, options,
parent_gadget, url, old_element,
scope);
})
.declareMethod('getDeclaredGadget',
function getDeclaredGadget(gadget_scope) {
if (!this.__sub_gadget_dict.hasOwnProperty(gadget_scope)) {
throw new ScopeError("Gadget scope '" + gadget_scope +
"' is not known.");
}
return this.__sub_gadget_dict[gadget_scope];
})
.declareMethod('dropGadget', function dropGadget(gadget_scope) {
if (!this.__sub_gadget_dict.hasOwnProperty(gadget_scope)) {
throw new ScopeError("Gadget scope '" + gadget_scope +
"' is not known.");
}
// http://perfectionkills.com/understanding-delete/
delete this.__sub_gadget_dict[gadget_scope];
});
/////////////////////////////////////////////////////////////////
// renderJS selector
/////////////////////////////////////////////////////////////////
renderJS = function getLoadingGadget(selector) {
var result;
if (selector === window) {
// window is the 'this' value when loading a javascript file
// In this case, use the current loading gadget constructor
result = gadget_loading_klass_list[0];
}
if (result === undefined) {
throw new Error("Unknown selector '" + selector + "'");
}
return result;
};
/////////////////////////////////////////////////////////////////
// renderJS.AcquisitionError
/////////////////////////////////////////////////////////////////
renderJS.AcquisitionError = function createAcquisitionError(message) {
this.name = "AcquisitionError";
if ((message !== undefined) && (typeof message !== "string")) {
throw new TypeError('You must pass a string.');
}
this.message = message || "Acquisition failed";
};
renderJS.AcquisitionError.prototype = new Error();
renderJS.AcquisitionError.prototype.constructor =
renderJS.AcquisitionError;
/////////////////////////////////////////////////////////////////
// renderJS.getAbsoluteURL
/////////////////////////////////////////////////////////////////
renderJS.getAbsoluteURL = function getAbsoluteURL(url, base_url) {
if (base_url && url) {
return new URL(url, base_url).href;
}
return url;
};
/////////////////////////////////////////////////////////////////
// renderJS.declareJS
/////////////////////////////////////////////////////////////////
renderJS.declareJS = function declareJS(url, container, pop) {
// https://www.html5rocks.com/en/tutorials/speed/script-loading/
// Prevent infinite recursion if loading render.js
// more than once
var result;
if (javascript_registration_dict.hasOwnProperty(url)) {
result = RSVP.resolve();
} else {
javascript_registration_dict[url] = null;
result = new RSVP.Promise(
function waitForJSLoadEvent(resolve, reject) {
var newScript;
newScript = document.createElement('script');
newScript.async = false;
newScript.type = 'text/javascript';
newScript.onload = function triggerJSLoaded() {
if (pop === true) {
// Drop the current loading klass info used by selector
gadget_loading_klass_list.shift();
}
resolve();
};
newScript.onerror = function triggerJSNotLoaded(e) {
if (pop === true) {
// Drop the current loading klass info used by selector
gadget_loading_klass_list.shift();
}
reject(e);
};
newScript.src = url;
container.appendChild(newScript);
}
);
}
return result;
};
/////////////////////////////////////////////////////////////////
// renderJS.declareCSS
/////////////////////////////////////////////////////////////////
renderJS.declareCSS = function declareCSS(url, container) {
// https://github.com/furf/jquery-getCSS/blob/master/jquery.getCSS.js
// No way to cleanly check if a css has been loaded
// So, always resolve the promise...
// http://requirejs.org/docs/faq-advanced.html#css
var result;
if (stylesheet_registration_dict.hasOwnProperty(url)) {
result = RSVP.resolve();
} else {
result = new RSVP.Promise(function waitForCSSLoadEvent(resolve, reject) {
var link;
link = document.createElement('link');
link.rel = 'stylesheet';
link.type = 'text/css';
link.href = url;
link.onload = function triggerCSSLoaded() {
stylesheet_registration_dict[url] = null;
resolve();
};
link.onerror = reject;
container.appendChild(link);
});
}
return result;
};
/////////////////////////////////////////////////////////////////
// renderJS.declareGadgetKlass
/////////////////////////////////////////////////////////////////
function parse(xhr, url) {
var tmp_constructor,
key,
parsed_html;
// Class inheritance
tmp_constructor = function createSuperKlass() {
RenderJSGadget.call(this);
};
tmp_constructor.__ready_list = [];
tmp_constructor.__service_list = RenderJSGadget.__service_list.slice();
tmp_constructor.declareMethod =
RenderJSGadget.declareMethod;
tmp_constructor.declareJob =
RenderJSGadget.declareJob;
tmp_constructor.declareAcquiredMethod =
RenderJSGadget.declareAcquiredMethod;
tmp_constructor.allowPublicAcquisition =
RenderJSGadget.allowPublicAcquisition;
tmp_constructor.ready =
RenderJSGadget.ready;
tmp_constructor.setState =
RenderJSGadget.setState;
tmp_constructor.onStateChange =
RenderJSGadget.onStateChange;
tmp_constructor.declareService =
RenderJSGadget.declareService;
tmp_constructor.onEvent =
RenderJSGadget.onEvent;
tmp_constructor.onLoop =
RenderJSGadget.onLoop;
tmp_constructor.prototype = new RenderJSGadget();
tmp_constructor.prototype.constructor = tmp_constructor;
tmp_constructor.prototype.__path = url;
tmp_constructor.prototype.__acquired_method_dict = {};
// https://developer.mozilla.org/en-US/docs/HTML_in_XMLHttpRequest
// https://developer.mozilla.org/en-US/docs/Web/API/DOMParser
// https://developer.mozilla.org/en-US/docs/Code_snippets/HTML_to_DOM
tmp_constructor.__template_element =
(new DOMParser()).parseFromString(xhr.responseText, "text/html");
parsed_html = renderJS.parseGadgetHTMLDocument(
tmp_constructor.__template_element,
url
);
for (key in parsed_html) {
if (parsed_html.hasOwnProperty(key)) {
tmp_constructor.prototype['__' + key] = parsed_html[key];
}
}
// Check if there is a HTML declared subgadget
if (tmp_constructor.__template_element
.querySelectorAll('[data-gadget-url]').length) {
tmp_constructor.__ready_list.push(loadSubGadgetDOMDeclaration);
}
return tmp_constructor;
}
renderJS.declareGadgetKlass = function declareGadgetKlass(url) {
var tmp_constructor,
defer;
if (gadget_model_defer_dict.hasOwnProperty(url)) {
// Return klass object if it already exists
if (gadget_model_defer_dict[url].hasOwnProperty('defer_list')) {
// Klass not yet loaded.
// Add a new defer
defer = RSVP.defer();
gadget_model_defer_dict[url].defer_list.push(defer);
return defer.promise;
}
if (gadget_model_defer_dict[url].is_resolved) {
return gadget_model_defer_dict[url].result;
}
throw gadget_model_defer_dict[url].result;
}
gadget_model_defer_dict[url] = {
defer_list: []
};
// Fetch the HTML page and parse it
return new RSVP.Queue()
.push(function waitForGadgetKlassAjax() {
return ajax(url);
})
.push(function handleGadgetKlassAjax(result) {
tmp_constructor = parse(result, url);
var fragment = document.createDocumentFragment(),
promise_list = [],
i,
js_list = tmp_constructor.prototype.__required_js_list,
css_list = tmp_constructor.prototype.__required_css_list;
// Load JS
if (js_list.length) {
gadget_loading_klass_list.push(tmp_constructor);
for (i = 0; i < js_list.length - 1; i += 1) {
promise_list.push(renderJS.declareJS(js_list[i], fragment));
}
promise_list.push(renderJS.declareJS(js_list[i], fragment, true));
}
// Load CSS
for (i = 0; i < css_list.length; i += 1) {
promise_list.push(renderJS.declareCSS(css_list[i], fragment));
}
document.head.appendChild(fragment);
return RSVP.all(promise_list);
})
.push(function handleGadgetKlassLoadingSuccess() {
var i,
len = gadget_model_defer_dict[url].defer_list.length;
for (i = 0; i < len; i += 1) {
gadget_model_defer_dict[url].defer_list[i].resolve(tmp_constructor);
}
delete gadget_model_defer_dict[url].defer_list;
gadget_model_defer_dict[url].result = tmp_constructor;
gadget_model_defer_dict[url].is_resolved = true;
return tmp_constructor;
})
.push(undefined, function handleGadgetKlassLoadingError(e) {
// Drop the current loading klass info used by selector
// even in case of error
var i,
len = gadget_model_defer_dict[url].defer_list.length;
for (i = 0; i < len; i += 1) {
gadget_model_defer_dict[url].defer_list[i].reject(e);
}
delete gadget_model_defer_dict[url].defer_list;
gadget_model_defer_dict[url].result = e;
gadget_model_defer_dict[url].is_resolved = false;
throw e;
});
};
/////////////////////////////////////////////////////////////////
// renderJS.clearGadgetKlassList
/////////////////////////////////////////////////////////////////
// For test purpose only
renderJS.clearGadgetKlassList = function clearGadgetKlassList() {
gadget_model_defer_dict = {};
javascript_registration_dict = {};
stylesheet_registration_dict = {};
};
/////////////////////////////////////////////////////////////////
// renderJS.parseGadgetHTMLDocument
/////////////////////////////////////////////////////////////////
renderJS.parseGadgetHTMLDocument =
function parseGadgetHTMLDocument(document_element, url) {
var settings = {
title: "",
interface_list: [],
required_css_list: [],
required_js_list: []
},
i,
element;
if (!url || !isAbsoluteOrDataURL.test(url)) {
throw new Error("The url should be absolute: " + url);
}
if (document_element.nodeType === 9) {
settings.title = document_element.title;
if (document_element.head !== null) {
for (i = 0; i < document_element.head.children.length; i += 1) {
element = document_element.head.children[i];
if (element.href !== null) {
// XXX Manage relative URL during extraction of URLs
// element.href returns absolute URL in firefox but "" in chrome;
if (element.rel === "stylesheet") {
settings.required_css_list.push(
renderJS.getAbsoluteURL(element.getAttribute("href"), url)
);
} else if (element.nodeName === "SCRIPT" &&
(element.type === "text/javascript" ||
!element.type)) {
settings.required_js_list.push(
renderJS.getAbsoluteURL(element.getAttribute("src"), url)
);
} else if (element.rel ===
"http://www.renderjs.org/rel/interface") {
settings.interface_list.push(
renderJS.getAbsoluteURL(element.getAttribute("href"), url)
);
}
}
}
}
} else {
throw new Error("The first parameter should be an HTMLDocument");
}
return settings;
};
/////////////////////////////////////////////////////////////////
// global
/////////////////////////////////////////////////////////////////
renderJS.Mutex = Mutex;
renderJS.ScopeError = ScopeError;
window.rJS = window.renderJS = renderJS;
window.__RenderJSGadget = RenderJSGadget;
window.__RenderJSEmbeddedGadget = RenderJSEmbeddedGadget;
window.__RenderJSIframeGadget = RenderJSIframeGadget;
///////////////////////////////////////////////////
// Bootstrap process. Register the self gadget.
///////////////////////////////////////////////////
// Detect when all JS dependencies have been loaded
all_dependency_loaded_deferred = new RSVP.defer();
// Manually initializes the self gadget if the DOMContentLoaded event
// is triggered before everything was ready.
// (For instance, the HTML-tag for the self gadget gets inserted after
// page load)
renderJS.manualBootstrap = function manualBootstrap() {
all_dependency_loaded_deferred.resolve();
};
document.addEventListener('DOMContentLoaded',
all_dependency_loaded_deferred.resolve, false);
function configureMutationObserver(TmpConstructor, url, root_gadget) {
// XXX HTML properties can only be set when the DOM is fully loaded
var settings = renderJS.parseGadgetHTMLDocument(document, url),
j,
key,
fragment = document.createDocumentFragment();
for (key in settings) {
if (settings.hasOwnProperty(key)) {
TmpConstructor.prototype['__' + key] = settings[key];
}
}
TmpConstructor.__template_element = document.createElement("div");
root_gadget.element = document.body;
root_gadget.state = {};
for (j = 0; j < root_gadget.element.childNodes.length; j += 1) {
fragment.appendChild(
root_gadget.element.childNodes[j].cloneNode(true)
);
}
TmpConstructor.__template_element.appendChild(fragment);
return RSVP.all([root_gadget.getRequiredJSList(),
root_gadget.getRequiredCSSList()])
.then(function handleRequireDependencyList(all_list) {
var i,
js_list = all_list[0],
css_list = all_list[1];
for (i = 0; i < js_list.length; i += 1) {
javascript_registration_dict[js_list[i]] = null;
}
for (i = 0; i < css_list.length; i += 1) {
stylesheet_registration_dict[css_list[i]] = null;
}
gadget_loading_klass_list.shift();
}).then(function createMutationObserver() {
// select the target node
var target = document.querySelector('body'),
// create an observer instance
observer = new MutationObserver(function observeMutatios(mutations) {
var i, k, len, len2, node, added_list;
mutations.forEach(function observerMutation(mutation) {
if (mutation.type === 'childList') {
len = mutation.removedNodes.length;
for (i = 0; i < len; i += 1) {
node = mutation.removedNodes[i];
if (node.nodeType === Node.ELEMENT_NODE) {
if (node.hasAttribute("data-gadget-url") &&
(node._gadget !== undefined)) {
deleteGadgetMonitor(node._gadget);
}
added_list =
node.querySelectorAll("[data-gadget-url]");
len2 = added_list.length;
for (k = 0; k < len2; k += 1) {
node = added_list[k];
if (node._gadget !== undefined) {
deleteGadgetMonitor(node._gadget);
}
}
}
}
len = mutation.addedNodes.length;
for (i = 0; i < len; i += 1) {
node = mutation.addedNodes[i];
if (node.nodeType === Node.ELEMENT_NODE) {
if (node.hasAttribute("data-gadget-url") &&
(node._gadget !== undefined)) {
if (document.contains(node)) {
startService(node._gadget);
}
}
added_list =
node.querySelectorAll("[data-gadget-url]");
len2 = added_list.length;
for (k = 0; k < len2; k += 1) {
node = added_list[k];
if (document.contains(node)) {
if (node._gadget !== undefined) {
startService(node._gadget);
}
}
}
}
}
}
});
}),
// configuration of the observer:
config = {
childList: true,
subtree: true,
attributes: false,
characterData: false
};
// pass in the target node, as well as the observer options
observer.observe(target, config);
return root_gadget;
});
}
function createLastAcquisitionGadget() {
var last_acquisition_gadget = new RenderJSGadget();
last_acquisition_gadget.__acquired_method_dict = {
reportServiceError: function reportServiceError(param_list) {
letsCrash(param_list[0]);
}
};
// Stop acquisition on the last acquisition gadget
// Do not put this on the klass, as their could be multiple instances
last_acquisition_gadget.__aq_parent = function __aq_parent(method_name) {
throw new renderJS.AcquisitionError(
"No gadget provides " + method_name
);
};
return last_acquisition_gadget;
}
/*
function notifyAllMethodToParent() {
;
}
*/
function createLoadingGadget(url) {
var TmpConstructor,
root_gadget,
embedded_channel,
notifyDeclareMethod,
declare_method_list_waiting,
loading_result,
channel_defer,
real_result_list;
// gadget_failed = false,
// connection_ready = false;
// Create the gadget class for the current url
if (gadget_model_defer_dict.hasOwnProperty(url)) {
throw new Error("bootstrap should not be called twice");
}
// Create the root gadget instance and put it in the loading stack
TmpConstructor = RenderJSEmbeddedGadget;
TmpConstructor.__ready_list = [];
TmpConstructor.__service_list = RenderJSGadget.__service_list.slice();
TmpConstructor.prototype.__path = url;
root_gadget = new TmpConstructor();
setAqParent(root_gadget, createLastAcquisitionGadget());
declare_method_list_waiting = [
"getInterfaceList",
"getRequiredCSSList",
"getRequiredJSList",
"getPath",
"getTitle",
"getMethodList"
];
// Inform parent gadget about declareMethod calls here.
notifyDeclareMethod = function notifyDeclareMethod(name) {
declare_method_list_waiting.push(name);
};
real_result_list = [TmpConstructor, root_gadget, embedded_channel,
declare_method_list_waiting];
if (window.self === window.top) {
loading_result = real_result_list;
} else {
channel_defer = RSVP.defer();
loading_result = RSVP.any([
channel_defer.promise,
new RSVP.Queue()
.push(function waitForParentChannelCreation() {
// Expect the channel to parent to be usable after 1 second
// If not, consider the gadget as the root
// Drop all iframe channel communication
return RSVP.delay(1000);
})
.push(function handleParentChannelCreation() {
real_result_list[2] = undefined;
return real_result_list;
})
]);
// Create the communication channel
embedded_channel = Channel.build({
window: window.parent,
origin: "*",
scope: "renderJS",
onReady: function onChannelReady() {
var k,
len;
// Channel is ready, so now declare all methods
notifyDeclareMethod = function notifyDeclareMethod(name) {
declare_method_list_waiting.push(
new RSVP.Promise(
function promiseChannelDeclareMethodCall(resolve, reject) {
embedded_channel.call({
method: "declareMethod",
params: name,
success: resolve,
error: reject
});
}
)
);
};
len = declare_method_list_waiting.length;
for (k = 0; k < len; k += 1) {
notifyDeclareMethod(declare_method_list_waiting[k]);
}
channel_defer.resolve(real_result_list);
}
});
real_result_list[2] = embedded_channel;
}
// Surcharge declareMethod to inform parent window
TmpConstructor.declareMethod = function declareMethod(name, callback,
options) {
var result = RenderJSGadget.declareMethod.apply(
this,
[name, callback, options]
);
notifyDeclareMethod(name);
return result;
};
TmpConstructor.declareService =
RenderJSGadget.declareService;
TmpConstructor.declareJob =
RenderJSGadget.declareJob;
TmpConstructor.onEvent =
RenderJSGadget.onEvent;
TmpConstructor.onLoop =
RenderJSGadget.onLoop;
TmpConstructor.declareAcquiredMethod =
RenderJSGadget.declareAcquiredMethod;
TmpConstructor.allowPublicAcquisition =
RenderJSGadget.allowPublicAcquisition;
TmpConstructor.prototype.__acquired_method_dict = {};
gadget_loading_klass_list.push(TmpConstructor);
return loading_result;
}
function triggerReadyList(TmpConstructor, root_gadget) {
// XXX Probably duplicated
var i,
ready_queue = new RSVP.Queue();
function ready_executable_wrapper(fct) {
return function wrapReadyFunction() {
return fct.call(root_gadget, root_gadget);
};
}
TmpConstructor.ready(function startServiceInReady() {
return startService(root_gadget);
});
for (i = 0; i < TmpConstructor.__ready_list.length; i += 1) {
// Put a timeout?
ready_queue
.push(ready_executable_wrapper(TmpConstructor.__ready_list[i]));
}
return ready_queue;
}
function finishAqParentConfiguration(TmpConstructor, root_gadget,
embedded_channel) {
// Define __aq_parent to inform parent window
root_gadget.__aq_parent =
TmpConstructor.prototype.__aq_parent = function aq_parent(method_name,
argument_list,
time_out) {
return new RSVP.Promise(
function waitForChannelAcquire(resolve, reject) {
embedded_channel.call({
method: "acquire",
params: [
method_name,
argument_list
],
success: resolve,
error: reject,
timeout: time_out
});
}
);
};
// bind calls to renderJS method on the instance
embedded_channel.bind("methodCall", function methodCall(trans, v) {
root_gadget[v[0]].apply(root_gadget, v[1])
.push(trans.complete,
function handleMethodCallError(e) {
trans.error(e.toString());
});
trans.delayReturn(true);
});
}
function bootstrap(url) {
// Create the loading gadget
var wait_for_gadget_loaded = createLoadingGadget(url),
TmpConstructor,
root_gadget,
embedded_channel,
declare_method_list_waiting;
return new RSVP.Queue()
.push(function waitForLoadingGadget() {
// Wait for the loading gadget to be created
return wait_for_gadget_loaded;
})
.push(function handleLoadingGadget(result_list) {
TmpConstructor = result_list[0];
root_gadget = result_list[1];
embedded_channel = result_list[2];
declare_method_list_waiting = result_list[3];
// Wait for all the gadget dependencies to be loaded
return all_dependency_loaded_deferred.promise;
})
.push(function waitForDeclareMethodList() {
// Wait for all methods to be correctly declared
return RSVP.all(declare_method_list_waiting);
})
.push(function waitForMutationObserver(result_list) {
if (embedded_channel !== undefined) {
finishAqParentConfiguration(TmpConstructor, root_gadget,
embedded_channel);
}
// Check all DOM modifications to correctly start/stop services
return configureMutationObserver(TmpConstructor, url, root_gadget);
})
.push(function waitForReadyList() {
clearGadgetInternalParameters(root_gadget);
TmpConstructor.__ready_list.unshift(loadSubGadgetDOMDeclaration);
// Trigger all ready functions
return triggerReadyList(TmpConstructor, root_gadget);
})
.push(function notifyReady() {
if (embedded_channel !== undefined) {
embedded_channel.notify({method: "ready"});
}
})
.push(undefined, function handleBootstrapError(e) {
letsCrash(e);
if (embedded_channel !== undefined) {
embedded_channel.notify({method: "failed", params: e.toString()});
}
throw e;
});
}
bootstrap(
removeHash(window.location.href)
);
}(document, window, RSVP, DOMParser, Channel, MutationObserver, Node,
FileReader, Blob, navigator, Event, URL));
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