refactor: optimized playlist logic

This commit is contained in:
Terry Geng
2020-03-25 11:38:49 +08:00
parent 3d3c55a0fb
commit b2e5efec93
12 changed files with 242 additions and 144 deletions

View File

@ -89,6 +89,44 @@
<img style="margin: auto; width: 35px;" src="static/image/loading.svg" />
</td>
</tr>
<tr id="playlist-empty" style="display: none;">
<td colspan="4" style="text-align:center;">
<img style="margin: auto; width: 35px;" src="static/image/empty_box.svg" />
</td>
</tr>
<tr class="playlist-item-template" style="display: none;">
<input hidden type="text" class="playlist-item-id" value="" />
<th scope="row" class="playlist-item-index"></th>
<td>
<div class="playlist-title">
<img width="80" class="playlist-item-thumbnail" src="static/image/unknown-album.png"/>
</div>
<div class="playlist-artwork">
<b class="playlist-item-title"></b>
<span class="playlist-item-type badge badge-secondary"></span>
<br />
<span class="playlist-item-artist"></span>
<br />
<div class="playlist-item-tags">
<a class="playlist-item-edit tag-space tag-click"><i class="fas fa-edit" style="color: #AAAAAA"></i></a>
</div>
</div>
</td>
<td>
<small class="playlist-item-path"></small>
</td>
<td>
<div class="btn-group">
<button type="button" class="playlist-item-play btn btn-info btn-sm btn-space">
<i class="fa fa-play" aria-hidden="true"></i>
</button>
<button type="button" class="playlist-item-trash btn btn-danger btn-sm btn-space">
<i class="fas fa-trash-alt" aria-hidden="true"></i>
</button>
</div>
</td>
</tr>
</tbody>
</table>
@ -410,7 +448,34 @@
$(event.target).closest('form').submit();
});
// ----------------------
// ------ Playlist ------
// ----------------------
var pl_item_template = $(".playlist-item-template");
var pl_id_element = $(".playlist-item-id");
var pl_index_element = $(".playlist-item-index");
var pl_title_element = $(".playlist-item-title");
var pl_artist_element = $(".playlist-item-artist");
var pl_thumb_element = $(".playlist-item-thumbnail");
var pl_type_element = $(".playlist-item-type");
var pl_path_element = $(".playlist-item-path");
var pl_tag_edit_element = $(".playlist-item-edit");
var notag_element = $(".library-item-notag"); // these elements are shared with library
var tag_element = $(".library-item-tag");
var add_tag_modal = $("#addTagModal");
var playlist_loading = $("#playlist-loading");
var playlist_table = $("#playlist-table");
var playlist_empty = $("#playlist-empty");
var playlist_ver = 0;
var playlist_current_index = 0;
function request(_url, _data, refresh=false){
console.log(_data);
@ -433,38 +498,124 @@
}
}
var loading = $("#playlist-loading");
var table = $("#playlist-table");
function displayPlaylist(data){
// console.info(data);
table.animate({opacity: 0}, 200, function(){
loading.hide();
$("#playlist-table .playlist-item").remove();
function addPlaylistItem(item){
pl_id_element.val(item.id);
pl_index_element.html(item.index + 1);
pl_title_element.html(item.title);
pl_artist_element.html(item.artist);
pl_thumb_element.attr("src", item.thumbnail);
pl_type_element.html(item.type);
pl_path_element.html(item.path);
var items = data.items;
$.each(items, function(index, item){
table.append(item);
var item_copy = pl_item_template.clone();
item_copy.attr("id", "playlist-item-" + item.index);
item_copy.addClass("playlist-item");
var tags = item_copy.find(".playlist-item-tags");
tags.empty();
var tag_edit_copy = pl_tag_edit_element.clone();
tag_edit_copy.click(function(){
addTagModalShow(item.id, item.title, item.tags);
});
tag_edit_copy.appendTo(tags);
if(item.tags.length > 0){
item.tags.forEach(function (tag_tuple){
tag_copy = tag_element.clone();
tag_copy.html(tag_tuple[0]);
tag_copy.addClass("badge-" + tag_tuple[1]);
tag_copy.appendTo(tags);
});
}else{
tag_copy = notag_element.clone();
tag_copy.appendTo(tags);
}
table.animate({opacity: 1}, 200);
item_copy.appendTo(playlist_table);
item_copy.show();
}
function displayPlaylist(data){
playlist_table.animate({opacity: 0}, 200, function(){
playlist_loading.hide();
$(".playlist-item").remove();
var items = data.items;
items.forEach(
function (item) {
addPlaylistItem(item);
bindPlaylistEvent();
}
);
displayActiveItem(data.current_index);
playlist_table.animate({opacity: 1}, 200);
});
}
function displayActiveItem(current_index){
$(".playlist-item").removeClass("table-active");
$("#playlist-item-"+current_index).addClass("table-active");
}
function updatePlaylist(){
table.animate({opacity: 0}, 200, function(){
loading.show();
playlist_table.animate({opacity: 0}, 200, function(){
playlist_empty.hide();
playlist_loading.show();
$("#playlist-table .playlist-item").css("opacity", 0);
$.ajax({
type: 'GET',
url: 'playlist',
statusCode : {
200: displayPlaylist
200: displayPlaylist,
204: function(){
playlist_loading.hide();
playlist_empty.show();
$(".playlist-item").remove();
}
}
});
table.animate({opacity: 1}, 200);
playlist_table.animate({opacity: 1}, 200);
});
}
function checkForPlaylistUpdate(){
$.ajax({
type: 'POST',
url : 'post',
statusCode : {
200 : function(data){
if(data.ver !== playlist_ver){
playlist_ver = data.ver;
updatePlaylist();
}
if(data.current_index !== playlist_current_index){
playlist_current_index = data.current_index;
displayActiveItem(data.current_index);
}
updateControls(data.empty, data.play, data.mode);
}
}
});
}
function bindPlaylistEvent() {
$(".playlist-item-play").unbind().click(
function (e) {
request('post', {
'play_music': ($(e.currentTarget).parent().parent().parent().find(".playlist-item-index").html() - 1)
});
}
);
$(".playlist-item-trash").unbind().click(
function (e) {
request('post', {
'delete_music': ($(e.currentTarget).parent().parent().parent().find(".playlist-item-index").html() - 1)
});
}
);
}
function updateControls(empty, play, mode){
if(empty){
$("#play-btn").prop("disabled", true);
@ -531,23 +682,11 @@
}
// Check the version of playlist to see if update is needed.
setInterval(function(){
$.ajax({
type: 'POST',
url : 'post',
statusCode : {
200 : function(data){
if(data.ver !== playlist_ver){
playlist_ver = data.ver;
updatePlaylist();
}
updateControls(data.empty, data.play, data.mode);
}
}
});
} , 3000);
setInterval(checkForPlaylistUpdate , 3000);
// ---------------------
// ------ Browser ------
// ---------------------
var filter_file = false;
var filter_url = false;
var filter_radio = false;
@ -665,10 +804,10 @@
var path_element = $(".library-item-path");
var tag_edit_element = $(".library-item-edit");
var notag_element = $(".library-item-notag");
var tag_element = $(".library-item-tag");
//var notag_element = $(".library-item-notag");
//var tag_element = $(".library-item-tag");
var add_tag_modal = $("#addTagModal");
//var add_tag_modal = $("#addTagModal");
function addResultItem(item){
id_element.val(item.id);