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Code Issues Releases Wiki Activity

fix some issues in infinite scrolling

This commit is contained in:
Andrew Dolgov 2007-08-24 06:31:57 +01:00
parent 4ab4d3640b
commit 29dfb258c9
4 changed files with 40 additions and 36 deletions
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7
backend.php
View File

@ -221,11 +221,16 @@
print "<headlines id=\"$feed\"><![CDATA[";
$topmost_article_ids = outputHeadlinesList($link, $feed, $subop,
$ret = outputHeadlinesList($link, $feed, $subop,
$view_mode, $limit, $cat_view, $next_unread_feed, $offset);
$topmost_article_ids = $ret[0];
$headlines_count = $ret[1];
print "]]></headlines>";
print "<headlines-count value=\"$headlines_count\"/>";
if ($_GET["debug"]) $timing_info = print_checkpoint("10", $timing_info);
if (is_array($topmost_article_ids) && !get_pref($link, 'COMBINED_DISPLAY_MODE')) {

31
feedlist.js
View File

@ -1,6 +1,7 @@
//var xmlhttp = Ajax.getTransport();
var _feed_cur_page = 0;
var _infscroll_disable = 0;
function viewCategory(cat) {
active_feed_is_cat = true;
@ -25,35 +26,14 @@ function feedlist_callback2(transport) {
}
}
var page_offset = 0;
function viewFeedGoPage(i) {
try {
if (!getActiveFeedId()) return;
if (i != 0) {
page_offset = page_offset + i;
} else {
page_offset = 0;
}
if (page_offset < 0) page_offset = 0;
viewfeed(getActiveFeedId(), undefined, undefined, undefined,
undefined, page_offset);
} catch (e) {
exception_error(e, "viewFeedGoPage");
}
}
function viewNextFeedPage() {
try {
if (!getActiveFeedId()) return;
_feed_cur_page++;
notify_progress("Loading, please wait...");
viewfeed(getActiveFeedId(), undefined, undefined, undefined,
undefined, _feed_cur_page);
undefined, _feed_cur_page+1);
} catch (e) {
exception_error(e, "viewFeedGoPage");
@ -72,11 +52,13 @@ function viewfeed(feed, subop, is_cat, subop_param, skip_history, offset) {
} else {
page_offset = 0;
_feed_cur_page = 0;
_infscroll_disable = 0;
}
if (getActiveFeedId() != feed) {
_feed_cur_page = 0;
active_post_id = 0;
_infscroll_disable = 0;
}
enableHotkeys();
@ -187,8 +169,9 @@ function viewfeed(feed, subop, is_cat, subop_param, skip_history, offset) {
} */
new Ajax.Request(query, {
asynchronous: page_offset == 0,
onComplete: function(transport) {
headlines_callback2(transport, feed, is_cat, _feed_cur_page);
headlines_callback2(transport, feed, is_cat, page_offset);
} });
} catch (e) {

4
functions.php
View File

@ -4216,6 +4216,8 @@
print "<div id=\"headlinesInnerContainer\" onscroll=\"headlines_scroll_handler()\">";
}
$headlines_count = db_num_rows($result);
if (db_num_rows($result) > 0) {
# print "\{$offset}";
@ -4464,7 +4466,7 @@
print "</div>";
}
return $topmost_article_ids;
return array($topmost_article_ids, $headlines_count);
}
// from here: http://www.roscripts.com/Create_tag_cloud-71.html

34
viewfeed.js
View File

@ -46,7 +46,8 @@ function catchup_callback2(transport, callback) {
}
function headlines_callback2(transport, active_feed_id, active_feed_is_cat, feed_cur_page) {
debug("headlines_callback2");
debug("headlines_callback2 [page=" + feed_cur_page + "]");
var f = document.getElementById("headlines-frame");
try {
if (feed_cur_page == 0) {
@ -57,6 +58,12 @@ function headlines_callback2(transport, active_feed_id, active_feed_is_cat, feed
if (transport.responseXML) {
var headlines = transport.responseXML.getElementsByTagName("headlines")[0];
var headlines_count_obj = transport.responseXML.getElementsByTagName("headlines-count")[0];
var headlines_count = headlines_count_obj.getAttribute("value");
if (headlines_count == 0) _infscroll_disable = 1;
var counters = transport.responseXML.getElementsByTagName("counters")[0];
var articles = transport.responseXML.getElementsByTagName("article");
var runtime_info = transport.responseXML.getElementsByTagName("runtime-info");
@ -71,15 +78,19 @@ function headlines_callback2(transport, active_feed_id, active_feed_is_cat, feed
}
} else {
if (headlines) {
debug("adding some more headlines...");
if (headlines_count > 0) {
debug("adding some more headlines...");
var c = document.getElementById("headlinesList");
var c = document.getElementById("headlinesList");
if (!c) {
c = document.getElementById("headlinesInnerContainer");
}
if (!c) {
c = document.getElementById("headlinesInnerContainer");
c.innerHTML = c.innerHTML + headlines.firstChild.nodeValue;
} else {
debug("no new headlines received");
}
c.innerHTML = c.innerHTML + headlines.firstChild.nodeValue;
} else {
debug("headlines_callback: returned no data");
notify_error("Error while trying to load more headlines");
@ -140,6 +151,8 @@ function headlines_callback2(transport, active_feed_id, active_feed_is_cat, feed
} catch (e) { }
}
_feed_cur_page = feed_cur_page;
notify("");
}
@ -1244,9 +1257,10 @@ function headlines_scroll_handler() {
var e = document.getElementById("headlinesInnerContainer");
if (e.scrollTop + e.offsetHeight > e.scrollHeight - 300) {
debug("more cowbell!");
viewNextFeedPage();
if (!_infscroll_disable) {
debug("more cowbell!");
viewNextFeedPage();
}
}
} catch (e) {