hgweb: add makeRequest javascript function
This function performs an asynchronous HTTP request and calls provided
callbacks:
- onstart: request is sent
- onsuccess: response is received
- onerror: some error occured
- oncomplete: response is fully processed and all other callbacks finished
--- a/mercurial/templates/static/mercurial.js Fri Sep 06 13:30:57 2013 +0400
+++ b/mercurial/templates/static/mercurial.js Fri Sep 06 13:30:57 2013 +0400
@@ -304,3 +304,27 @@
return String(replacements[p1]);
});
}
+
+function makeRequest(url, method, onstart, onsuccess, onerror, oncomplete) {
+ xfr = new XMLHttpRequest();
+ xfr.onreadystatechange = function() {
+ if (xfr.readyState === 4) {
+ try {
+ if (xfr.status === 200) {
+ onsuccess(xfr.responseText);
+ } else {
+ throw 'server error';
+ }
+ } catch (e) {
+ onerror(e);
+ } finally {
+ oncomplete();
+ }
+ }
+ };
+
+ xfr.open(method, url);
+ xfr.send();
+ onstart();
+ return xfr;
+}