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https://github.com/zulip/zulip.git
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6d255efe4c
This commit prepares the frontend code to be consumed by webpack. It is a hack: In theory, modules should be declaring and importing the modules they depend on and the globals they expose directly. However, that requires significant per-module work, which we don't really want to block moving our toolchain to webpack on. So we expose the modules by setting window.varName = varName; as needed in the js files.
90 lines
2.3 KiB
JavaScript
90 lines
2.3 KiB
JavaScript
var message_scroll = (function () {
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var exports = {};
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var actively_scrolling = false;
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var loading_more_messages_indicator_showing = false;
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exports.show_loading_older = function () {
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if (!loading_more_messages_indicator_showing) {
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loading.make_indicator($('#loading_more_messages_indicator'),
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{abs_positioned: true});
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loading_more_messages_indicator_showing = true;
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floating_recipient_bar.hide();
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}
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};
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exports.hide_loading_older = function () {
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if (loading_more_messages_indicator_showing) {
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loading.destroy_indicator($("#loading_more_messages_indicator"));
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loading_more_messages_indicator_showing = false;
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}
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};
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exports.hide_indicators = function () {
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exports.hide_loading_older();
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};
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exports.actively_scrolling = function () {
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return actively_scrolling;
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};
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exports.scroll_finished = function () {
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actively_scrolling = false;
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if (!$('#home').hasClass('active')) {
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return;
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}
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if (!pointer.suppress_scroll_pointer_update) {
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message_viewport.keep_pointer_in_view();
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} else {
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pointer.suppress_scroll_pointer_update = false;
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}
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floating_recipient_bar.update();
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if (message_viewport.at_top()) {
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message_fetch.maybe_load_older_messages({
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msg_list: current_msg_list,
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show_loading: exports.show_loading_older,
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hide_loading: exports.hide_loading_older,
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});
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}
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if (message_viewport.at_bottom()) {
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message_fetch.maybe_load_newer_messages({
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msg_list: current_msg_list,
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});
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}
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// When the window scrolls, it may cause some messages to
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// enter the screen and become read. Calling
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// unread_ops.process_visible will update necessary
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// data structures and DOM elements.
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setTimeout(unread_ops.process_visible, 0);
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};
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var scroll_timer;
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function scroll_finish() {
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actively_scrolling = true;
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clearTimeout(scroll_timer);
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scroll_timer = setTimeout(exports.scroll_finished, 100);
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}
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exports.initialize = function () {
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message_viewport.message_pane.scroll(_.throttle(function () {
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unread_ops.process_visible();
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scroll_finish();
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}, 50));
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};
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return exports;
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}());
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if (typeof module !== 'undefined') {
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module.exports = message_scroll;
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}
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window.message_scroll = message_scroll;
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