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feat: fold playlist to avoid displaying too many items

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This commit is contained in:
Terry Geng
2020-03-25 21:12:01 +08:00
parent b2e5efec93
commit 732c698408
2 changed files with 90 additions and 7 deletions
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25
interface.py
View File

@@ -165,10 +165,23 @@ def playlist():
if len(var.playlist) == 0:
return ('', 204)
DEFAULT_DISPLAY_COUNT = 11
_from = 0
_to = 10
if 'range_from' in request.args and 'range_to' in request.args:
_from = int(request.args['range_from'])
_to = int(request.args['range_to'])
else:
if var.playlist.current_index - int(DEFAULT_DISPLAY_COUNT/2) > 0:
_from = var.playlist.current_index - int(DEFAULT_DISPLAY_COUNT/2)
_to = _from - 1 + DEFAULT_DISPLAY_COUNT
tags_color_lookup = build_tags_color_lookup() # TODO: cached this?
items = []
for index, item_wrapper in enumerate(var.playlist):
for index, item_wrapper in enumerate(var.playlist[_from: _to + 1]):
tag_tuples = []
for tag in item_wrapper.item().tags:
tag_tuples.append([tag, tags_color_lookup[tag]])
@@ -197,7 +210,7 @@ def playlist():
thumb = "static/image/unknown-album.png"
items.append({
'index': index,
'index': _from + index,
'id': item.id,
'type': item.display_type(),
'path': path,
@@ -207,7 +220,12 @@ def playlist():
'tags': tag_tuples,
})
return jsonify({'items': items, 'current_index': var.playlist.current_index})
return jsonify({
'items': items,
'current_index': var.playlist.current_index,
'length': len(var.playlist),
'start_from': _from
})
def status():
@@ -581,7 +599,6 @@ def upload():
def download():
global log
print('id' in request.args)
if 'id' in request.args and request.args['id']:
item = dicts_to_items(var.bot,
var.music_db.query_music(

68
templates/index.html
View File

@@ -94,6 +94,11 @@
<img style="margin: auto; width: 35px;" src="static/image/empty_box.svg" />
</td>
</tr>
<tr id="playlist-expand" class="table-dark" style="display: none;">
<td colspan="4" style="text-align:center;">
<a class="text-muted" href="javascript:">See items <span class="playlist-expand-item-range"></span> on the playlist.</a>
</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>
@@ -473,10 +478,14 @@
var playlist_loading = $("#playlist-loading");
var playlist_table = $("#playlist-table");
var playlist_empty = $("#playlist-empty");
var playlist_expand = $("#playlist-expand");
var playlist_ver = 0;
var playlist_current_index = 0;
var playlist_range_from = 0;
var playlist_range_to = 0;
function request(_url, _data, refresh=false){
console.log(_data);
$.ajax({
@@ -541,14 +550,37 @@
playlist_loading.hide();
$(".playlist-item").remove();
var items = data.items;
var length = data.length;
var start_from = data.start_from;
playlist_range_from = start_from;
playlist_range_to = start_from + length - 1;
if(items.length < length && start_from > 0) {
_from = start_from - 5;
_from = _from > 0 ? _from : 0;
_to = start_from - 1;
if(_to > 0) {
insertExpandPrompt(_from, start_from + length - 1, _from, _to);
}
}
items.forEach(
function (item) {
addPlaylistItem(item);
bindPlaylistEvent();
}
);
if(items.length < length && start_from + items.length < length) {
_from = start_from + items.length;
_to = start_from + items.length - 1 + 10;
_to = _to < length - 1 ? _to : length - 1;
if(start_from + items.length < _to) {
insertExpandPrompt(start_from, _to, _from, _to);
}
}
displayActiveItem(data.current_index);
bindPlaylistEvent();
playlist_table.animate({opacity: 1}, 200);
});
}
@@ -558,14 +590,40 @@
$("#playlist-item-"+current_index).addClass("table-active");
}
function insertExpandPrompt(real_from, real_to ,display_from, display_to){
var expand_copy = playlist_expand.clone();
if(display_from !== display_to){
expand_copy.find(".playlist-expand-item-range").html((display_from+1) + "~" + (display_to+1));
}else{
expand_copy.find(".playlist-expand-item-range").html(display_from);
}
expand_copy.addClass('playlist-item');
expand_copy.appendTo(playlist_table);
expand_copy.click(function(){
updatePlaylist();
playlist_range_from = real_from;
playlist_range_to = real_to;
});
expand_copy.show();
}
function updatePlaylist(){
playlist_table.animate({opacity: 0}, 200, function(){
playlist_empty.hide();
playlist_loading.show();
$("#playlist-table .playlist-item").css("opacity", 0);
data = {};
if(!(playlist_range_from === 0 && playlist_range_to === 0)) {
data = {
range_from: playlist_range_from,
range_to: playlist_range_to
};
}
$.ajax({
type: 'GET',
url: 'playlist',
data: data,
statusCode : {
200: displayPlaylist,
204: function(){
@@ -587,12 +645,20 @@
200 : function(data){
if(data.ver !== playlist_ver){
playlist_ver = data.ver;
playlist_range_from = 0;
playlist_range_to = 0;
updatePlaylist();
}
if(data.current_index !== playlist_current_index){
if(data.current_index > playlist_range_to || data.current_index < playlist_range_from){
playlist_range_from = 0;
playlist_range_to = 0;
updatePlaylist();
}else{
playlist_current_index = data.current_index;
displayActiveItem(data.current_index);
}
}
updateControls(data.empty, data.play, data.mode);
}
}