miniflux-legacy/assets/js/nav.js
Mathias Kresin a1b8c5b160 do not deselect the current item if no successor/predecessors exists
When using the previous shortcut with the first article selected, the selection
is removed and no article is the current-item. Using the shortcut again, the
last article is the current-item (as expected on a new loaded page).

The same applies to the combination of last article and next shortcut.
2014-11-20 10:46:34 +01:00

109 lines
3.0 KiB
JavaScript

Miniflux.Nav = (function() {
function scrollPageTo(item)
{
var clientHeight = pageYOffset + document.documentElement.clientHeight;
var itemPosition = item.offsetTop + item.offsetHeight;
if (clientHeight - itemPosition < 0 || clientHeight - item.offsetTop > document.documentElement.clientHeight) {
window.scrollTo(0, item.offsetTop - 10);
}
}
function findNextItem()
{
var items = document.getElementsByTagName("article");
if (! document.getElementById("current-item")) {
items[0].id = "current-item";
scrollPageTo(items[0]);
}
else {
for (var i = 0, ilen = items.length; i < ilen; i++) {
if (items[i].id === "current-item") {
if (i + 1 < ilen) {
items[i].id = "item-" + items[i].getAttribute("data-item-id");
items[i + 1].id = "current-item";
scrollPageTo(items[i + 1]);
}
break;
}
}
}
}
function findPreviousItem()
{
var items = document.getElementsByTagName("article");
if (! document.getElementById("current-item")) {
items[items.length - 1].id = "current-item";
scrollPageTo(items[items.length - 1]);
}
else {
for (var i = items.length - 1; i >= 0; i--) {
if (items[i].id === "current-item") {
if (i - 1 >= 0) {
items[i].id = "item-" + items[i].getAttribute("data-item-id");
items[i - 1].id = "current-item";
scrollPageTo(items[i - 1]);
}
break;
}
}
}
}
function isListing()
{
if (document.getElementById("listing")) return true;
return false;
}
return {
OpenNextPage: function() {
var link = document.getElementById("next-page");
if (link) link.click();
},
OpenPreviousPage: function() {
var link = document.getElementById("previous-page");
if (link) link.click();
},
SelectNextItem: function() {
var link = document.getElementById("next-item");
if (link) {
link.click();
}
else if (isListing()) {
findNextItem();
}
},
SelectPreviousItem: function() {
var link = document.getElementById("previous-item");
if (link) {
link.click();
}
else if (isListing()) {
findPreviousItem();
}
},
ShowHelp: function() {
open("?action=show-help", "Help", "width=320,height=450,location=no,scrollbars=no,status=no,toolbar=no");
},
IsListing: isListing
};
})();