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Wrapper functions for XMLHTTPRequest in scholar.js, stolen and adapted slightly from Simon's ingester code (those override the mime type to text/plain and only use responseText, I assume to conform to the Piggy Bank API, so unfortunately we can't use the same ones elsewhere)

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Scholar.HTTP.doGet(url, onStatus, onDone) and Scholar.HTTP.doPost(url, body, onStatus, onDone) -- onStatus and onDone are callbacks to call on non-200 responses and the response body, respectively
This commit is contained in:
Dan Stillman 2006-06-13 14:53:38 +00:00
parent d42258b168
commit 39f9d2c3b3
1 changed files with 81 additions and 1 deletions
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82
chrome/chromeFiles/content/scholar/xpcom/scholar.js
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@ -3,7 +3,8 @@ const SCHOLAR_CONFIG = {
DB_FILE: 'scholar.sqlite',
DB_REBUILD: false, // erase DB and recreate from schema
DEBUG_LOGGING: true,
DEBUG_TO_CONSOLE: true // dump debug messages to console rather than (much slower) Debug Logger
DEBUG_TO_CONSOLE: true, // dump debug messages to console rather than (much slower) Debug Logger
REPOSITORY_URL: 'http://chnm.gmu.edu/firefoxscholar/dev/repo'
};
/*
@ -304,4 +305,83 @@ Scholar.Hash.prototype.remove = function(in_key){
Scholar.Hash.prototype.has = function(in_key){
return typeof(this.items[in_key]) != 'undefined';
}
Scholar.HTTP = new function(){
this.doGet = doGet;
this.doPost = doPost;
function doGet(url, onStatus, onDone){
var xmlhttp = Components.classes["@mozilla.org/xmlextras/xmlhttprequest;1"]
.createInstance();
xmlhttp.open('GET', url, true);
xmlhttp.onreadystatechange = function(){
_stateChange(xmlhttp, onStatus, onDone);
};
xmlhttp.send(null);
}
function doPost(url, body, onStatus, onDone){
var xmlhttp = Components.classes["@mozilla.org/xmlextras/xmlhttprequest;1"]
.createInstance();
xmlhttp.open('POST', url, true);
xmlhttp.onreadystatechange = function(){
_stateChange(xmlhttp, onStatus, onDone);
};
xmlhttp.send(body);
}
function _stateChange(xmlhttp, onStatus, onDone){
switch (xmlhttp.readyState){
// Request not yet made
case 1:
break;
// Contact established with server but nothing downloaded yet
case 2:
try {
// Check for HTTP status 200
if (xmlhttp.status != 200){
if (onStatus) {
onStatus(
xmlhttp.status,
xmlhttp.statusText,
xmlhttp
);
xmlhttp.abort();
}
}
}
catch (e){
Scholar.debug(e, 2);
}
break;
// Called multiple while downloading in progress
case 3:
break;
// Download complete
case 4:
try {
if (onDone){
onDone(xmlhttp);
}
}
catch (e){
Scholar.debug(e, 2);
}
break;
}
}
}