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auto catchup: prevent request flood

This commit is contained in:
Andrew Dolgov 2011-08-04 10:16:27 +04:00
parent 608cbde285
commit 76495dfd31
1 changed files with 38 additions and 18 deletions
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36
viewfeed.js
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@ -14,6 +14,9 @@ var preload_timeout_id = false;
var cache_added = []; var cache_added = [];
var catchup_id_batch = [];
var catchup_timeout_id = false;
function headlines_callback2(transport, feed_cur_page) { function headlines_callback2(transport, feed_cur_page) {
try { try {
handle_rpc_json(transport); handle_rpc_json(transport);
@ -1346,36 +1349,53 @@ function headlines_scroll_handler(e) {
if (getInitParam("cdm_auto_catchup") == 1) { if (getInitParam("cdm_auto_catchup") == 1) {
var ids = [];
$$("#headlines-frame > div[id*=RROW][class*=Unread]").each( $$("#headlines-frame > div[id*=RROW][class*=Unread]").each(
function(child) { function(child) {
if ($("headlines-frame").scrollTop > if ($("headlines-frame").scrollTop >
(child.offsetTop + child.offsetHeight/2)) { (child.offsetTop + child.offsetHeight/2)) {
ids.push(child.id.replace("RROW-", "")); var id = child.id.replace("RROW-", "");
if (catchup_id_batch.indexOf(id) == -1)
catchup_id_batch.push(id);
} }
}); });
if (ids.length > 0) { if (catchup_id_batch.length > 0) {
window.clearTimeout(catchup_timeout_id);
catchup_timeout_id = window.setTimeout('catchupBatchedArticles()',
1000);
}
}
} catch (e) {
exception_error("headlines_scroll_handler", e);
}
}
function catchupBatchedArticles() {
try {
if (catchup_id_batch.length > 0) {
var query = "?op=rpc&subop=catchupSelected" + var query = "?op=rpc&subop=catchupSelected" +
"&cmode=0&ids=" + param_escape(ids.toString()); "&cmode=0&ids=" + param_escape(catchup_id_batch.toString());
new Ajax.Request("backend.php", { new Ajax.Request("backend.php", {
parameters: query, parameters: query,
onComplete: function(transport) { onComplete: function(transport) {
handle_rpc_json(transport); handle_rpc_json(transport);
ids.each(function(id) { catchup_id_batch.each(function(id) {
var elem = $("RROW-" + id); var elem = $("RROW-" + id);
if (elem) elem.removeClassName("Unread"); if (elem) elem.removeClassName("Unread");
}); });
catchup_id_batch = [];
} }); } });
} }
}
} catch (e) { } catch (e) {
exception_error("headlines_scroll_handler", e); exception_error("catchupBatchedArticles", e);
} }
} }