/* ............................................................ */
/* utility/helper functions (and variables) */
-var xhr; // XMLHttpRequest object
var projectUrl; // partial query + separator ('?' or ';')
// 'commits' is an associative map. It maps SHA1s to Commit objects.
// ----------------------------------------------------------------------
-var inProgress = false; // are we processing response
-
/**#@+
* @constant
*/
var curCommit = new Commit();
var curGroup = {};
-var pollTimer = null;
-
/**
* Parse output from 'git blame --incremental [...]', received via
* XMLHttpRequest from server (blamedataUrl), and call handleLine
* Handle XMLHttpRequest errors
*
* @param {XMLHttpRequest} xhr: XMLHttpRequest object
+ * @param {Number} [xhr.pollTimer] ID of the timeout to clear
*
- * @globals pollTimer, commits, inProgress
+ * @globals commits
*/
function handleError(xhr) {
errorInfo('Server error: ' +
xhr.status + ' - ' + (xhr.statusText || 'Error contacting server'));
- clearInterval(pollTimer);
+ if (typeof xhr.pollTimer === "number") {
+ clearTimeout(xhr.pollTimer);
+ delete xhr.pollTimer;
+ }
commits = {}; // free memory
-
- inProgress = false;
}
/**
* Called after XMLHttpRequest finishes (loads)
*
- * @param {XMLHttpRequest} xhr: XMLHttpRequest object (unused)
+ * @param {XMLHttpRequest} xhr: XMLHttpRequest object
+ * @param {Number} [xhr.pollTimer] ID of the timeout to clear
*
- * @globals pollTimer, commits, inProgress
+ * @globals commits
*/
function responseLoaded(xhr) {
- clearInterval(pollTimer);
+ if (typeof xhr.pollTimer === "number") {
+ clearTimeout(xhr.pollTimer);
+ delete xhr.pollTimer;
+ }
fixColorsAndGroups();
writeTimeInterval();
commits = {}; // free memory
-
- inProgress = false;
}
/**
* handler for XMLHttpRequest onreadystatechange event
* @see startBlame
*
- * @globals xhr, inProgress
+ * @param {XMLHttpRequest} xhr: XMLHttpRequest object
+ * @param {Number} xhr.prevDataLength: previous value of xhr.responseText.length
+ * @param {Number} xhr.nextReadPos: start of unread part of xhr.responseText
+ * @param {Number} [xhr.pollTimer] ID of the timeout (to reset or cancel)
+ * @param {Boolean} fromTimer: if handler was called from timer
*/
-function handleResponse() {
+function handleResponse(xhr, fromTimer) {
/*
* xhr.readyState
return;
}
- // in case we were called before finished processing
- if (inProgress) {
- return;
- } else {
- inProgress = true;
- }
// extract new whole (complete) lines, and process them
- while (xhr.prevDataLength !== xhr.responseText.length) {
- if (xhr.readyState === 4 &&
- xhr.prevDataLength === xhr.responseText.length) {
- break;
- }
-
+ if (xhr.prevDataLength !== xhr.responseText.length) {
xhr.prevDataLength = xhr.responseText.length;
var unprocessed = xhr.responseText.substring(xhr.nextReadPos);
xhr.nextReadPos = processData(unprocessed, xhr.nextReadPos);
- } // end while
+ }
// did we finish work?
- if (xhr.readyState === 4 &&
- xhr.prevDataLength === xhr.responseText.length) {
+ if (xhr.readyState === 4) {
responseLoaded(xhr);
+ return;
}
- inProgress = false;
+ // if we get from timer, we have to restart it
+ // otherwise onreadystatechange gives us partial response, timer not needed
+ if (fromTimer) {
+ setTimeout(function () {
+ handleResponse(xhr, true);
+ }, 1000);
+
+ } else if (typeof xhr.pollTimer === "number") {
+ clearTimeout(xhr.pollTimer);
+ delete xhr.pollTimer;
+ }
}
// ============================================================
* Called from 'blame_incremental' view after loading table with
* file contents, a base for blame view.
*
- * @globals xhr, t0, projectUrl, div_progress_bar, totalLines, pollTimer
+ * @globals t0, projectUrl, div_progress_bar, totalLines
*/
function startBlame(blamedataUrl, bUrl) {
- xhr = createRequestObject();
+ var xhr = createRequestObject();
if (!xhr) {
errorInfo('ERROR: XMLHttpRequest not supported');
return;
xhr.prevDataLength = -1; // used to detect if we have new data
xhr.nextReadPos = 0; // where unread part of response starts
- xhr.onreadystatechange = handleResponse;
- //xhr.onreadystatechange = function () { handleResponse(xhr); };
+ xhr.onreadystatechange = function () {
+ handleResponse(xhr, false);
+ };
xhr.open('GET', blamedataUrl);
xhr.setRequestHeader('Accept', 'text/plain');
// not all browsers call onreadystatechange event on each server flush
// poll response using timer every second to handle this issue
- pollTimer = setInterval(xhr.onreadystatechange, 1000);
+ xhr.pollTimer = setTimeout(function () {
+ handleResponse(xhr, true);
+ }, 1000);
}
/* end of blame_incremental.js */