miniflux-legacy/assets/js/nav.js
2016-07-30 18:21:01 -04:00

118 lines
3.3 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()
{
return !!document.getElementById("listing");
}
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() {
var help_layer = document.getElementById("help-layer");
help_layer.removeAttribute("class");
},
CloseHelp: function() {
var help_layer = document.getElementById("help-layer");
help_layer.setAttribute("class", "hide");
},
ShowSearch: function() {
document.getElementById("search-opener").setAttribute("class", "hide");
document.getElementById("search-form").removeAttribute("class")
},
IsListing: isListing
};
})();