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when moving next or previous and currently active article is entirely invisible, start moving from first visible one

This commit is contained in:
Andrew Dolgov 2019-12-10 12:55:24 +03:00
parent 7d0bbe9962
commit 3993198aa7
1 changed files with 19 additions and 5 deletions
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24
js/Headlines.js
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@ -256,6 +256,18 @@ define(["dojo/_base/declare"], function (declare) {
etop < ctop && ebottom > ctop || ebottom > cbottom && etop < cbottom
},
firstVisible: function() {
const rows = $$("#headlines-frame > div[id*=RROW]");
const ctr = $("headlines-frame");
for (let i = 0; i < rows.length; i++) {
const row = rows[i];
if (this.isChildVisible(row, ctr)) {
return row.getAttribute("data-article-id");
}
}
},
scrollHandler: function (/*event*/) {
try {
Headlines.unpackVisible();
@ -830,13 +842,15 @@ define(["dojo/_base/declare"], function (declare) {
let prev_id = false;
let next_id = false;
if (!$('RROW-' + Article.getActive())) {
const active_row = $("RROW-" + Article.getActive());
if (!active_row) {
Article.setActive(0);
}
if (!Article.getActive()) {
next_id = rows[0];
prev_id = rows[rows.length - 1]
if (!Article.getActive() || (active_row && !Headlines.isChildVisible(active_row, $("headlines-frame")))) {
next_id = Headlines.firstVisible();
prev_id = next_id;
} else {
for (let i = 0; i < rows.length; i++) {
if (rows[i] == Article.getActive()) {
@ -889,7 +903,7 @@ define(["dojo/_base/declare"], function (declare) {
if (!noscroll) {
Article.scroll(-ctr.offsetHeight / 2, event);
} else {
if (row.offsetTop < ctr.scrollTop) {
if (row && row.offsetTop < ctr.scrollTop) {
Article.cdmScrollToId(Article.getActive(), noscroll, event);
} else if (prev_id) {
Article.setActive(prev_id);