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t-vendor/html/lib/sockjs.js  view on Meta::CPAN

"\u206e":"\\u206e","\u206f":"\\u206f","\ufeff":"\\ufeff","\ufff0":"\\ufff0",
"\ufff1":"\\ufff1","\ufff2":"\\ufff2","\ufff3":"\\ufff3","\ufff4":"\\ufff4",
"\ufff5":"\\ufff5","\ufff6":"\\ufff6","\ufff7":"\\ufff7","\ufff8":"\\ufff8",
"\ufff9":"\\ufff9","\ufffa":"\\ufffa","\ufffb":"\\ufffb","\ufffc":"\\ufffc",
"\ufffd":"\\ufffd","\ufffe":"\\ufffe","\uffff":"\\uffff"};

// Some extra characters that Chrome gets wrong, and substitutes with
// something else on the wire.
var extra_escapable = /[\x00-\x1f\ud800-\udfff\ufffe\uffff\u0300-\u0333\u033d-\u0346\u034a-\u034c\u0350-\u0352\u0357-\u0358\u035c-\u0362\u0374\u037e\u0387\u0591-\u05af\u05c4\u0610-\u0617\u0653-\u0654\u0657-\u065b\u065d-\u065e\u06df-\u06e2\u06eb-\u06e...
    extra_lookup;

// JSON Quote string. Use native implementation when possible.
var JSONQuote = (JSON && JSON.stringify) || function(string) {
    json_escapable.lastIndex = 0;
    if (json_escapable.test(string)) {
        string = string.replace(json_escapable, function(a) {
            return json_lookup[a];
        });
    }
    return '"' + string + '"';
};

// This may be quite slow, so let's delay until user actually uses bad
// characters.
var unroll_lookup = function(escapable) {
    var i;
    var unrolled = {}
    var c = []
    for(i=0; i<65536; i++) {
        c.push( String.fromCharCode(i) );
    }
    escapable.lastIndex = 0;
    c.join('').replace(escapable, function (a) {
        unrolled[ a ] = '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
        return '';
    });
    escapable.lastIndex = 0;
    return unrolled;
};

// Quote string, also taking care of unicode characters that browsers
// often break. Especially, take care of unicode surrogates:
//    http://en.wikipedia.org/wiki/Mapping_of_Unicode_characters#Surrogates
utils.quote = function(string) {
    var quoted = JSONQuote(string);

    // In most cases this should be very fast and good enough.
    extra_escapable.lastIndex = 0;
    if(!extra_escapable.test(quoted)) {
        return quoted;
    }

    if(!extra_lookup) extra_lookup = unroll_lookup(extra_escapable);

    return quoted.replace(extra_escapable, function(a) {
        return extra_lookup[a];
    });
}

var _all_protocols = ['websocket',
                      'xdr-streaming',
                      'xhr-streaming',
                      'iframe-eventsource',
                      'iframe-htmlfile',
                      'xdr-polling',
                      'xhr-polling',
                      'iframe-xhr-polling',
                      'jsonp-polling'];

utils.probeProtocols = function() {
    var probed = {};
    for(var i=0; i<_all_protocols.length; i++) {
        var protocol = _all_protocols[i];
        // User can have a typo in protocol name.
        probed[protocol] = SockJS[protocol] &&
                           SockJS[protocol].enabled();
    }
    return probed;
};

utils.detectProtocols = function(probed, protocols_whitelist, info) {
    var pe = {},
        protocols = [];
    if (!protocols_whitelist) protocols_whitelist = _all_protocols;
    for(var i=0; i<protocols_whitelist.length; i++) {
        var protocol = protocols_whitelist[i];
        pe[protocol] = probed[protocol];
    }
    var maybe_push = function(protos) {
        var proto = protos.shift();
        if (pe[proto]) {
            protocols.push(proto);
        } else {
            if (protos.length > 0) {
                maybe_push(protos);
            }
        }
    }

    // 1. Websocket
    if (info.websocket !== false) {
        maybe_push(['websocket']);
    }

    // 2. Streaming
    if (pe['xhr-streaming'] && !info.null_origin) {
        protocols.push('xhr-streaming');
    } else {
        if (pe['xdr-streaming'] && !info.cookie_needed && !info.null_origin) {
            protocols.push('xdr-streaming');
        } else {
            maybe_push(['iframe-eventsource',
                        'iframe-htmlfile']);
        }
    }

    // 3. Polling
    if (pe['xhr-polling'] && !info.null_origin) {
        protocols.push('xhr-polling');
    } else {
        if (pe['xdr-polling'] && !info.cookie_needed && !info.null_origin) {
            protocols.push('xdr-polling');
        } else {
            maybe_push(['iframe-xhr-polling',
                        'jsonp-polling']);
        }
    }
    return protocols;
}
//         [*] End of lib/utils.js


//         [*] Including lib/dom.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

// May be used by htmlfile jsonp and transports.
var MPrefix = '_sockjs_global';
utils.createHook = function() {
    var window_id = 'a' + utils.random_string(8);
    if (!(MPrefix in _window)) {
        var map = {};
        _window[MPrefix] = function(window_id) {
            if (!(window_id in map)) {
                map[window_id] = {
                    id: window_id,
                    del: function() {delete map[window_id];}
                };
            }
            return map[window_id];
        }
    }
    return _window[MPrefix](window_id);
};



utils.attachMessage = function(listener) {
    utils.attachEvent('message', listener);
};
utils.attachEvent = function(event, listener) {
    if (typeof _window.addEventListener !== 'undefined') {
        _window.addEventListener(event, listener, false);
    } else {
        // IE quirks.

t-vendor/html/lib/sockjs.js  view on Meta::CPAN

    if (that._recv_stop) {
        that._recv_stop();
    }
    that.ri = that._recv_stop = null;
    that.send_destructor();
};


// Abstract away code that handles global namespace pollution.
var jsonPReceiverWrapper = function(url, constructReceiver, user_callback) {
    var id = 'a' + utils.random_string(6);
    var url_id = url + '?c=' + escape(WPrefix + '.' + id);
    // Callback will be called exactly once.
    var callback = function(frame) {
        delete _window[WPrefix][id];
        user_callback(frame);
    };

    var close_script = constructReceiver(url_id, callback);
    _window[WPrefix][id] = close_script;
    var stop = function() {
        if (_window[WPrefix][id]) {
            _window[WPrefix][id](utils.closeFrame(1000, "JSONP user aborted read"));
        }
    };
    return stop;
};
//         [*] End of lib/trans-jsonp-polling.js


//         [*] Including lib/trans-xhr.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

var AjaxBasedTransport = function() {};
AjaxBasedTransport.prototype = new BufferedSender();

AjaxBasedTransport.prototype.run = function(ri, trans_url,
                                            url_suffix, Receiver, AjaxObject) {
    var that = this;
    that.ri = ri;
    that.trans_url = trans_url;
    that.send_constructor(createAjaxSender(AjaxObject));
    that.poll = new Polling(ri, Receiver,
                            trans_url + url_suffix, AjaxObject);
};

AjaxBasedTransport.prototype.doCleanup = function() {
    var that = this;
    if (that.poll) {
        that.poll.abort();
        that.poll = null;
    }
};

// xhr-streaming
var XhrStreamingTransport = SockJS['xhr-streaming'] = function(ri, trans_url) {
    this.run(ri, trans_url, '/xhr_streaming', XhrReceiver, utils.XHRCorsObject);
};

XhrStreamingTransport.prototype = new AjaxBasedTransport();

XhrStreamingTransport.enabled = function() {
    // Support for CORS Ajax aka Ajax2? Opera 12 claims CORS but
    // doesn't do streaming.
    return (_window.XMLHttpRequest &&
            'withCredentials' in new XMLHttpRequest() &&
            (!/opera/i.test(navigator.userAgent)));
};
XhrStreamingTransport.roundTrips = 2; // preflight, ajax

// Safari gets confused when a streaming ajax request is started
// before onload. This causes the load indicator to spin indefinetely.
XhrStreamingTransport.need_body = true;


// According to:
//   http://stackoverflow.com/questions/1641507/detect-browser-support-for-cross-domain-xmlhttprequests
//   http://hacks.mozilla.org/2009/07/cross-site-xmlhttprequest-with-cors/


// xdr-streaming
var XdrStreamingTransport = SockJS['xdr-streaming'] = function(ri, trans_url) {
    this.run(ri, trans_url, '/xhr_streaming', XhrReceiver, utils.XDRObject);
};

XdrStreamingTransport.prototype = new AjaxBasedTransport();

XdrStreamingTransport.enabled = function() {
    return !!_window.XDomainRequest;
};
XdrStreamingTransport.roundTrips = 2; // preflight, ajax



// xhr-polling
var XhrPollingTransport = SockJS['xhr-polling'] = function(ri, trans_url) {
    this.run(ri, trans_url, '/xhr', XhrReceiver, utils.XHRCorsObject);
};

XhrPollingTransport.prototype = new AjaxBasedTransport();

XhrPollingTransport.enabled = XhrStreamingTransport.enabled;
XhrPollingTransport.roundTrips = 2; // preflight, ajax


// xdr-polling
var XdrPollingTransport = SockJS['xdr-polling'] = function(ri, trans_url) {
    this.run(ri, trans_url, '/xhr', XhrReceiver, utils.XDRObject);
};

XdrPollingTransport.prototype = new AjaxBasedTransport();

XdrPollingTransport.enabled = XdrStreamingTransport.enabled;
XdrPollingTransport.roundTrips = 2; // preflight, ajax
//         [*] End of lib/trans-xhr.js


//         [*] Including lib/trans-iframe.js
/*
 * ***** BEGIN LICENSE BLOCK *****
 * Copyright (c) 2011-2012 VMware, Inc.
 *
 * For the license see COPYING.
 * ***** END LICENSE BLOCK *****
 */

// Few cool transports do work only for same-origin. In order to make
// them working cross-domain we shall use iframe, served form the
// remote domain. New browsers, have capabilities to communicate with
// cross domain iframe, using postMessage(). In IE it was implemented
// from IE 8+, but of course, IE got some details wrong:
//    http://msdn.microsoft.com/en-us/library/cc197015(v=VS.85).aspx
//    http://stevesouders.com/misc/test-postmessage.php

var IframeTransport = function() {};

IframeTransport.prototype.i_constructor = function(ri, trans_url, base_url) {
    var that = this;
    that.ri = ri;
    that.origin = utils.getOrigin(base_url);
    that.base_url = base_url;
    that.trans_url = trans_url;