summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorThomas BrĂ¼derli2008-11-26 10:07:16 +0000
committerThomas BrĂ¼derli2008-11-26 10:07:16 +0000
commit643e9f34522a7c07d9f41c0f4f28f7169dad31c5 (patch)
tree0ed789c656280ea2da227c84c2afb4125f5833cd
parentbb671acbe075d93844c6d8ffeef3bcd94019f805 (diff)
downloaditools-643e9f34522a7c07d9f41c0f4f28f7169dad31c5.tar.gz
itools-643e9f34522a7c07d9f41c0f4f28f7169dad31c5.tar.bz2
itools-643e9f34522a7c07d9f41c0f4f28f7169dad31c5.zip
Add new it_http class to itjs includes
-rw-r--r--itjs.class5
-rwxr-xr-xitjs/http.js242
2 files changed, 245 insertions, 2 deletions
diff --git a/itjs.class b/itjs.class
index 40d65b8..b89e37a 100644
--- a/itjs.class
+++ b/itjs.class
@@ -46,7 +46,8 @@ function serialize($values, $envelope = false)
if (($envelope || isset($values['eof'])) && ($callback = it::replace(array('[^\w.]' => ""), $_REQUEST['itjs_call'])))
{
$target = $_REQUEST['itjs_iframe'] ? "parent" : "window";
- $header = "$target.it_loader && $target.$callback && $target.$callback.dataReady(";
+ list($itclass) = explode('.', $callback);
+ $header = "$target.$itclass && $target.$callback && $target.$callback.dataReady(";
$footer = "," . intval($_REQUEST['itjs_callid']) . ");";
if ($_REQUEST['itjs_iframe']) # iframe-based loading required by Opera 7
@@ -112,7 +113,7 @@ function filenames($filelist)
$itjs = "/www/server/phpinclude/itools/itjs";
$searchlib = "/www/lib.search.ch/doc";
$special = array(
- "itools" => "$itjs/it.js,$itjs/loader.js,$itjs/state.js,$itjs/timer.js",
+ "itools" => "$itjs/it.js,$itjs/http.js,$itjs/loader.js,$itjs/state.js,$itjs/timer.js",
"boot.js" => "$itjs/boot.js",
"state.html" => "$itjs/state.html",
"error.gif" => "$itjs/error.gif",
diff --git a/itjs/http.js b/itjs/http.js
new file mode 100755
index 0000000..8615e98
--- /dev/null
+++ b/itjs/http.js
@@ -0,0 +1,242 @@
+/**
+ * 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.readyState == 4))
+ {
+ 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.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);
+}
+