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//////////////////////////////
// Browser
//////////////////////////////
var XHR = window.XMLHttpRequest || function () {
try { return new ActiveXObject("Msxml2.XMLHTTP.6.0"); } catch (e1) {}
try { return new ActiveXObject("Msxml2.XMLHTTP.3.0"); } catch (e2) {}
try { return new ActiveXObject("Msxml2.XMLHTTP"); } catch (e3) {}
throw new Error("This browser does not support XMLHttpRequest.");
};
function Browser(location, document, head, XHR, $log) {
var self = this;
self.isMock = false;
//////////////////////////////////////////////////////////////
// XHR API
//////////////////////////////////////////////////////////////
var idCounter = 0;
var outstandingRequestCount = 0;
var outstandingRequestCallbacks = [];
self.xhr = function(method, url, post, callback){
if (isFunction(post)) {
callback = post;
post = _null;
}
if (lowercase(method) == 'json') {
var callbackId = "angular_" + Math.random() + '_' + (idCounter++);
callbackId = callbackId.replace(/\d\./, '');
var script = document[0].createElement('script');
script.type = 'text/javascript';
script.src = url.replace('JSON_CALLBACK', callbackId);
head.append(script);
window[callbackId] = function(data){
window[callbackId] = _undefined;
callback(200, data);
};
} else {
var xhr = new XHR();
xhr.open(method, url, true);
xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
xhr.setRequestHeader("Accept", "application/json, text/plain, */*");
xhr.setRequestHeader("X-Requested-With", "XMLHttpRequest");
outstandingRequestCount ++;
xhr.onreadystatechange = function() {
if (xhr.readyState == 4) {
try {
callback(xhr.status || 200, xhr.responseText);
} finally {
outstandingRequestCount--;
if (outstandingRequestCount === 0) {
while(outstandingRequestCallbacks.length) {
try {
outstandingRequestCallbacks.pop()();
} catch (e) {
}
}
}
}
}
};
xhr.send(post || '');
}
};
self.notifyWhenNoOutstandingRequests = function(callback){
if (outstandingRequestCount === 0) {
callback();
} else {
outstandingRequestCallbacks.push(callback);
}
};
//////////////////////////////////////////////////////////////
// Poll Watcher API
//////////////////////////////////////////////////////////////
var pollFns = [];
function poll(){
foreach(pollFns, function(pollFn){ pollFn(); });
}
self.poll = poll;
/**
* Adds a function to the list of functions that poller periodically executes
* @return {Function} the added function
*/
self.addPollFn = function(/**Function*/fn){
pollFns.push(fn);
return fn;
};
/**
* Configures the poller to run in the specified intervals, using the specified setTimeout fn and
* kicks it off.
*/
self.startPoller = function(/**number*/interval, /**Function*/setTimeout){
(function check(){
poll();
setTimeout(check, interval);
})();
};
//////////////////////////////////////////////////////////////
// URL API
//////////////////////////////////////////////////////////////
self.setUrl = function(url) {
var existingURL = location.href;
if (!existingURL.match(/#/)) existingURL += '#';
if (!url.match(/#/)) url += '#';
location.href = url;
};
self.getUrl = function() {
return location.href;
};
//////////////////////////////////////////////////////////////
// Cookies API
//////////////////////////////////////////////////////////////
var rawDocument = document[0];
var lastCookies = {};
var lastCookieString = '';
/**
* The cookies method provides a 'private' low level access to browser cookies. It is not meant to
* be used directly, use the $cookie service instead.
*
* The return values vary depending on the arguments that the method was called with as follows:
* <ul><li>
* cookies() -> hash of all cookies, this is NOT a copy of the internal state, so do not modify it
* </li><li>
* cookies(name, value) -> set name to value, if value is undefined delete the cookie
* </li><li>
* cookies(name) -> the same as (name, undefined) == DELETES (no one calls it right now that way)
* </li></ul>
*/
self.cookies = function (/**string*/name, /**string*/value){
var cookieLength, cookieArray, i, keyValue;
if (name) {
if (value === _undefined) {
rawDocument.cookie = escape(name) + "=;expires=Thu, 01 Jan 1970 00:00:00 GMT";
} else {
if (isString(value)) {
rawDocument.cookie = escape(name) + '=' + escape(value);
cookieLength = name.length + value.length + 1;
if (cookieLength > 4096) {
$log.warn("Cookie '"+ name +"' possibly not set or overflowed because it was too large ("+
cookieLength + " > 4096 bytes)!");
}
if (lastCookies.length > 20) {
$log.warn("Cookie '"+ name +"' possibly not set or overflowed because too many cookies " +
"were already set (" + lastCookies.length + " > 20 )");
}
}
}
} else {
if (rawDocument.cookie !== lastCookieString) {
lastCookieString = rawDocument.cookie;
cookieArray = lastCookieString.split("; ");
lastCookies = {};
for (i = 0; i < cookieArray.length; i++) {
keyValue = cookieArray[i].split("=");
if (keyValue.length === 2) { //ignore nameless cookies
lastCookies[unescape(keyValue[0])] = unescape(keyValue[1]);
}
}
}
return lastCookies;
}
};
//////////////////////////////////////////////////////////////
// Misc API
//////////////////////////////////////////////////////////////
var hoverListener = noop;
self.hover = function(listener) { hoverListener = listener; };
self.bind = function() {
document.bind("mouseover", function(event){
hoverListener(jqLite(msie ? event.srcElement : event.target), true);
return true;
});
document.bind("mouseleave mouseout click dblclick keypress keyup", function(event){
hoverListener(jqLite(event.target), false);
return true;
});
};
/**
* Adds a stylesheet tag to the head.
*/
self.addCss = function(/**string*/url) {
var link = jqLite(rawDocument.createElement('link'));
link.attr('rel', 'stylesheet');
link.attr('type', 'text/css');
link.attr('href', url);
head.append(link);
};
/**
* Adds a script tag to the head.
*/
self.addJs = function(/**string*/url, /**string*/dom_id) {
var script = jqLite(rawDocument.createElement('script'));
script.attr('type', 'text/javascript');
script.attr('src', url);
if (dom_id) script.attr('id', dom_id);
head.append(script);
};
}
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