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ui: Move the scroll handlers into top-level functions.

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We'll need to be able to invoke them in event handlers.

(imported from commit 4487f711b59af0ccbc3f94c34e99c96228942add)
This commit is contained in:
Jessica McKellar
2013-08-02 17:41:40 -04:00
parent 7347bc7213
commit a1f760dedb
1 changed files with 40 additions and 39 deletions
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79
static/js/ui.js
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@@ -707,45 +707,6 @@ $(function () {
function () { $('#send-status').stop(true).fadeOut(500); }
);
var scroll_start_message;
function scroll_finished() {
actively_scrolling = false;
if ($('#home').hasClass('active')) {
if (!suppress_scroll_pointer_update) {
keep_pointer_in_view();
} else {
suppress_scroll_pointer_update = false;
}
exports.update_floating_recipient_bar();
if (viewport.scrollTop() === 0 &&
have_scrolled_away_from_top) {
have_scrolled_away_from_top = false;
load_more_messages(current_msg_list);
} else if (!have_scrolled_away_from_top) {
have_scrolled_away_from_top = true;
}
// When the window scrolls, it may cause some messages to
// enter the screen and become read. Calling
// process_visible_unread_messages will update necessary
// data structures and DOM elements.
setTimeout(process_visible_unread_messages, 0);
}
}
var scroll_timer;
function scroll_finish() {
actively_scrolling = true;
clearTimeout(scroll_timer);
scroll_timer = setTimeout(scroll_finished, 100);
}
$(window).scroll($.throttle(50, function (e) {
process_visible_unread_messages();
scroll_finish();
}));
var throttled_mousewheelhandler = $.throttle(50, function (e, delta) {
// Most of the mouse wheel's work will be handled by the
// scroll handler, but when we're at the top or bottom of the
@@ -1405,6 +1366,46 @@ $(function () {
onboarding.initialize();
});
var scroll_start_message;
function scroll_finished() {
actively_scrolling = false;
if ($('#home').hasClass('active')) {
if (!suppress_scroll_pointer_update) {
keep_pointer_in_view();
} else {
suppress_scroll_pointer_update = false;
}
exports.update_floating_recipient_bar();
if (viewport.scrollTop() === 0 &&
have_scrolled_away_from_top) {
have_scrolled_away_from_top = false;
load_more_messages(current_msg_list);
} else if (!have_scrolled_away_from_top) {
have_scrolled_away_from_top = true;
}
// When the window scrolls, it may cause some messages to
// enter the screen and become read. Calling
// process_visible_unread_messages will update necessary
// data structures and DOM elements.
setTimeout(process_visible_unread_messages, 0);
}
}
var scroll_timer;
function scroll_finish() {
actively_scrolling = true;
clearTimeout(scroll_timer);
scroll_timer = setTimeout(scroll_finished, 100);
}
$(window).scroll($.throttle(50, function (e) {
process_visible_unread_messages();
scroll_finish();
}));
var presence_descriptions = {
active: 'is active',
away: 'was recently active',