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FIX: Use much less aggressive cloaking

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This commit is contained in:
Robin Ward 2016-03-01 16:50:46 -05:00
parent e6b95e56d7
commit bff965327c
1 changed files with 11 additions and 6 deletions
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17
app/assets/javascripts/discourse/components/scrolling-post-stream.js.es6
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@ -41,8 +41,9 @@ export default MountWidget.extend({
const $w = $(window);
const windowHeight = window.innerHeight ? window.innerHeight : $w.height();
const slack = Math.round(windowHeight * 15);
const slack = Math.round(windowHeight * 5);
const onscreen = [];
const nearby = [];
let windowTop = $w.scrollTop();
@ -72,6 +73,7 @@ export default MountWidget.extend({
if (viewBottom > windowTop && viewTop <= windowBottom) {
onscreen.push(bottomView);
}
nearby.push(bottomView);
bottomView++;
}
@ -114,20 +116,23 @@ export default MountWidget.extend({
}
const onscreenPostNumbers = [];
const prev = this._previouslyOnscreen;
const prev = this._previouslyNearby;
const newPrev = {};
onscreen.forEach(idx => {
nearby.forEach(idx => {
const post = posts.objectAt(idx);
const postNumber = post.post_number;
delete prev[postNumber];
onscreenPostNumbers.push(postNumber);
if (onscreen.indexOf(idx) !== -1) {
onscreenPostNumbers.push(postNumber);
}
newPrev[postNumber] = post;
uncloak(post, this);
});
Object.keys(prev).forEach(pn => cloak(prev[pn], this));
this._previouslyOnscreen = newPrev;
this._previouslyNearby = newPrev;
this.screenTrack.setOnscreen(onscreenPostNumbers);
},
@ -139,7 +144,7 @@ export default MountWidget.extend({
this._super();
const debouncedScroll = () => Ember.run.debounce(this, this._scrollTriggered, 10);
this._previouslyOnscreen = {};
this._previouslyNearby = {};
this.appEvents.on('post-stream:refresh', debouncedScroll);
$(document).bind('touchmove.post-stream', debouncedScroll);