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options.requestObserver callback for Zotero.HTTP.promise()

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The callback receives the XMLHttpRequest object after the open() call.
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Dan Stillman 2013-03-22 17:04:38 -04:00
parent 059906a11e
commit b208097a8e
1 changed files with 8 additions and 2 deletions
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10
chrome/content/zotero/xpcom/http.js
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@ -41,6 +41,7 @@ Zotero.HTTP = new function() {
* <li>debug - Log response text and status code</li> * <li>debug - Log response text and status code</li>
* <li>dontCache - If set, specifies that the request should not be fulfilled from the cache</li> * <li>dontCache - If set, specifies that the request should not be fulfilled from the cache</li>
* <li>headers - HTTP headers to include in the request</li> * <li>headers - HTTP headers to include in the request</li>
* <li>requestObserver - Callback to receive XMLHttpRequest after open()</li>
* <li>responseType - The type of the response. See XHR 2 documentation for legal values</li> * <li>responseType - The type of the response. See XHR 2 documentation for legal values</li>
* <li>responseCharset - The charset the response should be interpreted as</li> * <li>responseCharset - The charset the response should be interpreted as</li>
* <li>successCodes - HTTP status codes that are considered successful</li> * <li>successCodes - HTTP status codes that are considered successful</li>
@ -86,12 +87,19 @@ Zotero.HTTP = new function() {
}); });
} }
var deferred = Q.defer();
var xmlhttp = Components.classes["@mozilla.org/xmlextras/xmlhttprequest;1"] var xmlhttp = Components.classes["@mozilla.org/xmlextras/xmlhttprequest;1"]
.createInstance(); .createInstance();
// Prevent certificate/authentication dialogs from popping up // Prevent certificate/authentication dialogs from popping up
xmlhttp.mozBackgroundRequest = true; xmlhttp.mozBackgroundRequest = true;
xmlhttp.open(method, url, true); xmlhttp.open(method, url, true);
// Pass the request to a callback
if (options && options.requestObserver) {
options.requestObserver(xmlhttp);
}
if (method == 'PUT') { if (method == 'PUT') {
// Some servers (e.g., Jungle Disk DAV) return a 200 response code // Some servers (e.g., Jungle Disk DAV) return a 200 response code
// with Content-Length: 0, which triggers a "no element found" error // with Content-Length: 0, which triggers a "no element found" error
@ -128,8 +136,6 @@ Zotero.HTTP = new function() {
xmlhttp.setRequestHeader(header, headers[header]); xmlhttp.setRequestHeader(header, headers[header]);
} }
var deferred = Q.defer();
xmlhttp.onloadend = function() { xmlhttp.onloadend = function() {
var status = xmlhttp.status; var status = xmlhttp.status;