439 lines
19 KiB
JavaScript
439 lines
19 KiB
JavaScript
/**
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The MIT License
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Copyright (c) 2010 Daniel Park (http://metaweb.com, http://postmessage.freebaseapps.com)
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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**/
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var NO_JQUERY = {};
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(function(window, $, undefined) {
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if (!("console" in window)) {
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var c = window.console = {};
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c.log = c.warn = c.error = c.debug = function(){};
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}
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if ($ === NO_JQUERY) {
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// jQuery is optional
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$ = {
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fn: {},
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extend: function() {
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var a = arguments[0];
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for (var i=1,len=arguments.length; i<len; i++) {
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var b = arguments[i];
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for (var prop in b) {
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a[prop] = b[prop];
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}
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}
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return a;
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}
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};
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}
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$.fn.pm = function() {
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console.log("usage: \nto send: $.pm(options)\nto receive: $.pm.bind(type, fn, [origin])");
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return this;
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};
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// send postmessage
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$.pm = window.pm = function(options) {
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pm.send(options);
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};
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// bind postmessage handler
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$.pm.bind = window.pm.bind = function(type, fn, origin, hash, async_reply) {
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pm.bind(type, fn, origin, hash, async_reply === true);
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};
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// unbind postmessage handler
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$.pm.unbind = window.pm.unbind = function(type, fn) {
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pm.unbind(type, fn);
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};
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// default postmessage origin on bind
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$.pm.origin = window.pm.origin = null;
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// default postmessage polling if using location hash to pass postmessages
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$.pm.poll = window.pm.poll = 200;
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var pm = {
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send: function(options) {
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var o = $.extend({}, pm.defaults, options),
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target = o.target;
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if (!o.target) {
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console.warn("postmessage target window required");
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return;
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}
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if (!o.type) {
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console.warn("postmessage type required");
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return;
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}
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var msg = {data:o.data, type:o.type};
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if (o.success) {
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msg.callback = pm._callback(o.success);
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}
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if (o.error) {
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msg.errback = pm._callback(o.error);
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}
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if (("postMessage" in target) && !o.hash) {
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pm._bind();
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target.postMessage(JSON.stringify(msg), o.origin || '*');
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}
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else {
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pm.hash._bind();
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pm.hash.send(o, msg);
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}
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},
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bind: function(type, fn, origin, hash, async_reply) {
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pm._replyBind ( type, fn, origin, hash, async_reply );
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},
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_replyBind: function(type, fn, origin, hash, isCallback) {
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if (("postMessage" in window) && !hash) {
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pm._bind();
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}
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else {
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pm.hash._bind();
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}
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var l = pm.data("listeners.postmessage");
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if (!l) {
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l = {};
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pm.data("listeners.postmessage", l);
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}
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var fns = l[type];
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if (!fns) {
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fns = [];
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l[type] = fns;
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}
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fns.push({fn:fn, callback: isCallback, origin:origin || $.pm.origin});
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},
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unbind: function(type, fn) {
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var l = pm.data("listeners.postmessage");
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if (l) {
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if (type) {
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if (fn) {
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// remove specific listener
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var fns = l[type];
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if (fns) {
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var m = [];
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for (var i=0,len=fns.length; i<len; i++) {
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var o = fns[i];
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if (o.fn !== fn) {
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m.push(o);
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}
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}
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l[type] = m;
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}
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}
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else {
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// remove all listeners by type
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delete l[type];
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}
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}
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else {
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// unbind all listeners of all type
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for (var i in l) {
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delete l[i];
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}
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}
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}
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},
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data: function(k, v) {
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if (v === undefined) {
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return pm._data[k];
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}
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pm._data[k] = v;
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return v;
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},
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_data: {},
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_CHARS: '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'.split(''),
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_random: function() {
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var r = [];
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for (var i=0; i<32; i++) {
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r[i] = pm._CHARS[0 | Math.random() * 32];
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};
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return r.join("");
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},
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_callback: function(fn) {
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var cbs = pm.data("callbacks.postmessage");
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if (!cbs) {
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cbs = {};
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pm.data("callbacks.postmessage", cbs);
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}
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var r = pm._random();
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cbs[r] = fn;
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return r;
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},
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_bind: function() {
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// are we already listening to message events on this w?
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if (!pm.data("listening.postmessage")) {
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if (window.addEventListener) {
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window.addEventListener("message", pm._dispatch, false);
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}
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else if (window.attachEvent) {
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window.attachEvent("onmessage", pm._dispatch);
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}
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pm.data("listening.postmessage", 1);
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}
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},
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_dispatch: function(e) {
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//console.log("$.pm.dispatch", e, this);
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try {
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var msg = JSON.parse(e.data);
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}
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catch (ex) {
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//console.warn("postmessage data invalid json: ", ex); //message wasn't meant for pm
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return;
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}
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if (!msg.type) {
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//console.warn("postmessage message type required"); //message wasn't meant for pm
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return;
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}
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var cbs = pm.data("callbacks.postmessage") || {},
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cb = cbs[msg.type];
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if (cb) {
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cb(msg.data);
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}
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else {
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var l = pm.data("listeners.postmessage") || {};
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var fns = l[msg.type] || [];
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for (var i=0,len=fns.length; i<len; i++) {
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var o = fns[i];
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if (o.origin && o.origin !== '*' && e.origin !== o.origin) {
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console.warn("postmessage message origin mismatch", e.origin, o.origin);
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if (msg.errback) {
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// notify post message errback
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var error = {
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message: "postmessage origin mismatch",
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origin: [e.origin, o.origin]
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};
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pm.send({target:e.source, data:error, type:msg.errback});
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}
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continue;
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}
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function sendReply ( data ) {
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if (msg.callback) {
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pm.send({target:e.source, data:data, type:msg.callback});
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}
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}
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try {
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if ( o.callback ) {
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o.fn(msg.data, sendReply, e);
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} else {
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sendReply ( o.fn(msg.data, e) );
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}
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}
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catch (ex) {
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if (msg.errback) {
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// notify post message errback
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pm.send({target:e.source, data:ex, type:msg.errback});
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} else {
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throw ex;
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}
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}
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};
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}
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}
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};
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// location hash polling
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pm.hash = {
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send: function(options, msg) {
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//console.log("hash.send", target_window, options, msg);
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var target_window = options.target,
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target_url = options.url;
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if (!target_url) {
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console.warn("postmessage target window url is required");
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return;
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}
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target_url = pm.hash._url(target_url);
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var source_window,
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source_url = pm.hash._url(window.location.href);
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if (window == target_window.parent) {
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source_window = "parent";
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}
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else {
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try {
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for (var i=0,len=parent.frames.length; i<len; i++) {
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var f = parent.frames[i];
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if (f == window) {
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source_window = i;
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break;
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}
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};
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}
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catch(ex) {
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// Opera: security error trying to access parent.frames x-origin
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// juse use window.name
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source_window = window.name;
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}
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}
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if (source_window == null) {
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console.warn("postmessage windows must be direct parent/child windows and the child must be available through the parent window.frames list");
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return;
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}
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var hashmessage = {
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"x-requested-with": "postmessage",
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source: {
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name: source_window,
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url: source_url
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},
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postmessage: msg
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};
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var hash_id = "#x-postmessage-id=" + pm._random();
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target_window.location = target_url + hash_id + encodeURIComponent(JSON.stringify(hashmessage));
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},
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_regex: /^\#x\-postmessage\-id\=(\w{32})/,
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_regex_len: "#x-postmessage-id=".length + 32,
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_bind: function() {
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// are we already listening to message events on this w?
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if (!pm.data("polling.postmessage")) {
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setInterval(function() {
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var hash = "" + window.location.hash,
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m = pm.hash._regex.exec(hash);
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if (m) {
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var id = m[1];
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if (pm.hash._last !== id) {
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pm.hash._last = id;
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pm.hash._dispatch(hash.substring(pm.hash._regex_len));
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}
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}
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}, $.pm.poll || 200);
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pm.data("polling.postmessage", 1);
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}
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},
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_dispatch: function(hash) {
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if (!hash) {
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return;
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}
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try {
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hash = JSON.parse(decodeURIComponent(hash));
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if (!(hash['x-requested-with'] === 'postmessage' &&
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hash.source && hash.source.name != null && hash.source.url && hash.postmessage)) {
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// ignore since hash could've come from somewhere else
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return;
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}
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}
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catch (ex) {
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// ignore since hash could've come from somewhere else
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return;
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}
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var msg = hash.postmessage,
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cbs = pm.data("callbacks.postmessage") || {},
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cb = cbs[msg.type];
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if (cb) {
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cb(msg.data);
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}
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else {
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var source_window;
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if (hash.source.name === "parent") {
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source_window = window.parent;
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}
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else {
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source_window = window.frames[hash.source.name];
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}
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var l = pm.data("listeners.postmessage") || {};
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var fns = l[msg.type] || [];
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for (var i=0,len=fns.length; i<len; i++) {
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var o = fns[i];
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if (o.origin) {
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var origin = /https?\:\/\/[^\/]*/.exec(hash.source.url)[0];
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if (o.origin !== '*' && origin !== o.origin) {
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console.warn("postmessage message origin mismatch", origin, o.origin);
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if (msg.errback) {
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// notify post message errback
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var error = {
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message: "postmessage origin mismatch",
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origin: [origin, o.origin]
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};
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pm.send({target:source_window, data:error, type:msg.errback, hash:true, url:hash.source.url});
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}
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continue;
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}
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}
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function sendReply ( data ) {
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if (msg.callback) {
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pm.send({target:source_window, data:data, type:msg.callback, hash:true, url:hash.source.url});
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}
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}
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try {
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if ( o.callback ) {
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o.fn(msg.data, sendReply);
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} else {
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sendReply ( o.fn(msg.data) );
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}
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}
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catch (ex) {
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if (msg.errback) {
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// notify post message errback
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pm.send({target:source_window, data:ex, type:msg.errback, hash:true, url:hash.source.url});
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} else {
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throw ex;
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}
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}
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};
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}
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},
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_url: function(url) {
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// url minus hash part
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return (""+url).replace(/#.*$/, "");
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}
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};
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$.extend(pm, {
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defaults: {
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target: null, /* target window (required) */
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url: null, /* target window url (required if no window.postMessage or hash == true) */
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type: null, /* message type (required) */
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data: null, /* message data (required) */
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success: null, /* success callback (optional) */
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error: null, /* error callback (optional) */
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origin: "*", /* postmessage origin (optional) */
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hash: false /* use location hash for message passing (optional) */
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}
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});
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})(this, typeof jQuery === "undefined" ? NO_JQUERY : jQuery);
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/**
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* http://www.JSON.org/json2.js
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**/
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if (! ("JSON" in window && window.JSON)){JSON={}}(function(){function f(n){return n<10?"0"+n:n}if(typeof Date.prototype.toJSON!=="function"){Date.prototype.toJSON=function(key){return this.getUTCFullYear()+"-"+f(this.getUTCMonth()+1)+"-"+f(this.getUTCDate())+"T"+f(this.getUTCHours())+":"+f(this.getUTCMinutes())+":"+f(this.getUTCSeconds())+"Z"};String.prototype.toJSON=Number.prototype.toJSON=Boolean.prototype.toJSON=function(key){return this.valueOf()}}var cx=/[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,escapable=/[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,gap,indent,meta={"\b":"\\b","\t":"\\t","\n":"\\n","\f":"\\f","\r":"\\r",'"':'\\"',"\\":"\\\\"},rep;function quote(string){escapable.lastIndex=0;return escapable.test(string)?'"'+string.replace(escapable,function(a){var c=meta[a];return typeof c==="string"?c:"\\u"+("0000"+a.charCodeAt(0).toString(16)).slice(-4)})+'"':'"'+string+'"'}function str(key,holder){var i,k,v,length,mind=gap,partial,value=holder[key];if(value&&typeof value==="object"&&typeof value.toJSON==="function"){value=value.toJSON(key)}if(typeof rep==="function"){value=rep.call(holder,key,value)}switch(typeof value){case"string":return quote(value);case"number":return isFinite(value)?String(value):"null";case"boolean":case"null":return String(value);case"object":if(!value){return"null"}gap+=indent;partial=[];if(Object.prototype.toString.apply(value)==="[object Array]"){length=value.length;for(i=0;i<length;i+=1){partial[i]=str(i,value)||"null"}v=partial.length===0?"[]":gap?"[\n"+gap+partial.join(",\n"+gap)+"\n"+mind+"]":"["+partial.join(",")+"]";gap=mind;return v}if(rep&&typeof rep==="object"){length=rep.length;for(i=0;i<length;i+=1){k=rep[i];if(typeof k==="string"){v=str(k,value);if(v){partial.push(quote(k)+(gap?": ":":")+v)}}}}else{for(k in value){if(Object.hasOwnProperty.call(value,k)){v=str(k,value);if(v){partial.push(quote(k)+(gap?": ":":")+v)}}}}v=partial.length===0?"{}":gap?"{\n"+gap+partial.join(",\n"+gap)+"\n"+mind+"}":"{"+partial.join(",")+"}";gap=mind;return v}}if(typeof JSON.stringify!=="function"){JSON.stringify=function(value,replacer,space){var i;gap="";indent="";if(typeof space==="number"){for(i=0;i<space;i+=1){indent+=" "}}else{if(typeof space==="string"){indent=space}}rep=replacer;if(replacer&&typeof replacer!=="function"&&(typeof replacer!=="object"||typeof replacer.length!=="number")){throw new Error("JSON.stringify")}return str("",{"":value})}}if(typeof JSON.parse!=="function"){JSON.parse=function(text,reviver){var j;function walk(holder,key){var k,v,value=holder[key];if(value&&typeof value==="object"){for(k in value){if(Object.hasOwnProperty.call(value,k)){v=walk(value,k);if(v!==undefined){value[k]=v}else{delete value[k]}}}}return reviver.call(holder,key,value)}cx.lastIndex=0;if(cx.test(text)){text=text.replace(cx,function(a){return"\\u"+("0000"+a.charCodeAt(0).toString(16)).slice(-4)})}if(/^[\],:{}\s]*$/.test(text.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g,"@").replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g,"]").replace(/(?:^|:|,)(?:\s*\[)+/g,""))){j=eval("("+text+")");return typeof reviver==="function"?walk({"":j},""):j}throw new SyntaxError("JSON.parse")}}}());
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