diff options
Diffstat (limited to 'devel-utf8/itjs/http.js')
| -rwxr-xr-x | devel-utf8/itjs/http.js | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/devel-utf8/itjs/http.js b/devel-utf8/itjs/http.js deleted file mode 100755 index 5773cda..0000000 --- a/devel-utf8/itjs/http.js +++ /dev/null @@ -1,245 +0,0 @@ -/** - * Create http loader to request data from server - * - * @param cb Callback function or object with keys 'object', 'method', ['errorhandler'] - */ -function it_http(cb) -{ - this.instance = it_http.instances++; - this.callback = cb ? cb : {}; - this.req = null; - this.scrpt = []; - this.callid = 0; - this.busy = false; - - // register global reference - it_http['__inst' + this.instance] = this; -} - -/* Methods */ -it_http.prototype = { - -/* send GET request and trigger callback */ -get: function(url, callback) -{ - if (typeof callback != 'undefined') - this.callback = callback; - this.send(url, 'GET'); -}, - -/* send POST request with data and trigger callback */ -post: function(url, data, callback) -{ - if (typeof callback != 'undefined') - this.callback = callback; - - var postdata = ''; - if (typeof data == 'object') - { - for (var k in data) - postdata += (postdata ? '&' : '') + it_url_encode(k) + "=" + it_url_encode(data[k]); - } - else - postdata = data; - - this.send(url, 'POST', postdata); -}, - -/* private method that finally sends the request */ -send: function(url, method, postdata) -{ - this.stop(); - - this.busy = true; - this.req = null; - var samehost = (url.indexOf('http://') < 0 || url.indexOf(window.location.hostname) > 0); - - if (samehost) // use XMLHTTP request only if on same host - { - try - { - this.req = new XMLHttpRequest(); - } - catch (e) - { - var classnames = [ 'MSXML2.XMLHTTP', 'Microsoft.XMLHTTP' ]; - - for (var i=0; i < classnames.length; i++) - { - try - { - this.req = new ActiveXObject(classnames[i]); - break; - } - catch (e) { } - } - } - - try - { - this.req.open(method, url); - var me = this; - this.req.onreadystatechange = function() { me.ready_state_changed(); } - var workingxmlhttp = this.req.onreadystatechange; - - if (!workingxmlhttp) /* Old Konqueror */ - this.req = null; - } - catch (e) { } - } - - this.starttime = new Date().getTime(); - - if (this.req) - { - if (method == "POST") - this.req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); - - this.req.send(postdata); - } - else - { - url += (url.match(/\?/) ? "&" : "?") + "itjs_call=it_http.__inst" + this.instance + "&itjs_callid=" + (++this.callid) + (postdata ? '&' + postdata : ""); - - if (samehost || (window.opera && !window.XMLHttpRequest)) // Opera 7 only works with iframes - { - var scrpt = document.createElement("iframe"); - scrpt.style.width = scrpt.style.height = 1; - url += "&itjs_iframe=1"; - } - else - { - var scrpt = document.createElement("script"); - this.req = { starttime: this.starttime }; - try - { - this.scrpt[this.callid] = scrpt; - if (!document.all) scrpt.src = url; - document.body.appendChild(scrpt); - if (document.all) scrpt.src = url; - } - catch (e) { return false; } - } - } - - return true; -}, - -ready_state_changed: function() -{ - var req = this.req; // Avoid race conditions - - if (req && !req.aborted && req.readyState == 4) // Check aborted flag because IE9 throws error c00c023f when accessing aborted request - { - var data = null; - - try - { - if (req.responseText != "") - data = eval("(" + req.responseText + ")"); - } - catch (e) - { - // trigger error handler (if defined) - if (typeof this.callback == 'object' && this.callback.errorhandler) - { - var obj = this.callback.object ? this.callback.object : window; - if (typeof obj[this.callback.errorhandler] == 'function') - obj[this.callback.errorhandler](req.responseText); - } - else - ED(e, req.responseText); - } - - if (data) - this.dataReady(data, this.callid); - - this.unlink(this.callid); - } -}, - -dataReady: function(data, callid) -{ - var fixkonqueror33gcbug = this.req; - var loadtime = new Date().getTime() - this.starttime; - - this.req = null; - - if ((typeof data == "object") && (this.callid == callid)) - { - data.loadtime = loadtime; - - // trigger callback function - if (typeof this.callback == 'function') - this.callback(data); - else if (typeof this.callback == 'object' && this.callback.method) - { - // it_set(data, this.callback); - var obj = this.callback.object ? this.callback.object : window; - if (typeof obj[this.callback.method] == 'function') - obj[this.callback.method](data); - } - } -}, - -stop: function() -{ - try { - this.req.aborted = true; // Set aborted flag as IE9 throws error c00c023f when accessing aborted request - if (this.req.readyState >= 2) // Do not abort request never used before as it can throw error e.g. on Firefox - this.req.abort(); - } catch (e) { } - - this.unlink(this.callid); -}, - -unlink: function(callid) -{ - if (this.req) - this.req = null; - - if (this.scrpt[callid]) - { - if (!(document.all && String(navigator.userAgent).indexOf('MSIE 5.0') > 0)) - document.body.removeChild(this.scrpt[callid]); - this.scrpt[callid] = null; - } - - this.busy = false; -} /* NO COMMA */ - -} - - -// static properties -it_http.instances = 0; - -// static methods -it_http.get_instance = function() -{ - var inst; - for (var i=0; i < it_http.instances; i++) - if ((inst = it_http['__inst'+i]) && inst.pub && !inst.busy) - return inst; - - inst = new it_http(); - inst.pub = true; - return inst; -} - -/* send GET request and trigger callback */ -it_http.get = function(url, callback) -{ - var inst = it_http.get_instance(); - inst.callback = callback; - inst.get(url); -} - -/* send POST request and trigger callback */ -it_http.post = function(url, postdata, callback) -{ - var inst = it_http.get_instance(); - inst.callback = callback; - inst.post(url, postdata); -} - |