public/javascripts/lsl.js

   1 "use strict";
   2 (function(){
   3 var uri_base, environment, devel_env;   // filled on page load from an HTML attribute
   4 var start_time = Date.now();
   5
   6 var ui_icon_class_re = new RegExp('\\bui-icon-\\S+\\b');
   7 var uri_id_re = new RegExp('/(\\d+)$');
   8 var lists_version = -1;
   9 var lists = [];
  10 var selected_list;
  11
  12 function debug(...args) {
  13     if (devel_env)
  14         console.debug.apply(console, args);
  15 }
  16
  17 function uri_id(uri) {
  18     var m = uri.match(uri_id_re);
  19     return m ? m[1] : null;
  20 }
  21 function add_list_item(data) {
  22     var item = $('<li>').addClass('list-item-row').data('item', data);
  23     var cb = $('<input type="checkbox">');
  24     if (data.done) cb.prop('checked', true);
  25     item.append(cb);
  26     item.append($('<span class="description">').text(data.description || ''));
  27     item.append($('<span class="edit-trigger">').text('…'));
  28
  29     $('#list-items').append(item);
  30     $('#list-contents').addClass('have-list-items');
  31 }
  32 function got_lists_version(new_version) {
  33     if (new_version != lists_version)
  34         window.setTimeout(load_lists);
  35 }
  36 function got_list_version(new_version) {
  37     if (new_version != selected_list.data('lsl-version'))
  38         window.setTimeout(
  39             () => load_list_items(selected_list.data('lsl-uri'), selected_list));
  40 }
  41 function load_list_items(uri, target) {
  42     $.get(uri)
  43     .done(item_data => {
  44         target.data('lsl-items', item_data.items);
  45         target.data('lsl-version', item_data.version);
  46
  47         // TODO: merge new items into existing ones
  48         // keep track of the last existing item, and append new one
  49         // after it, prepending if there is no last existing item
  50         // the newly prepended/inserted item becomes the last existing
  51         $('#list-contents').removeClass('have-list-items');
  52         var item_list = $('#list-items').empty();
  53
  54         $.each(item_data.items, (i,item) => {
  55             add_list_item(item);
  56         });
  57
  58         got_lists_version(item_data.lists_version);
  59     });
  60 }
  61 function select_list(new_selected_list) {
  62     if (new_selected_list && selected_list
  63         && new_selected_list.length && selected_list.length
  64         && new_selected_list.get(0) == selected_list.get(0)
  65     )
  66         return;
  67
  68     if (new_selected_list && !new_selected_list.length)
  69         new_selected_list = null;
  70
  71     $('#page').toggleClass('have-lists', !!new_selected_list);
  72
  73     if (selected_list)
  74         selected_list.removeClass('selected');
  75
  76     if (new_selected_list) {
  77         load_list_items(new_selected_list.data('lsl-uri'), new_selected_list);
  78         new_selected_list.addClass('selected');
  79         $('#selected-list-name').text(new_selected_list.data('lsl-name'));
  80     }
  81
  82     selected_list = new_selected_list;
  83 }
  84 function edit_list() {
  85     var d = $('<div>')
  86         .append(
  87             $('<fieldset>')
  88                 .append(
  89                     $('<legend>').text('List name'),
  90                     $('<input type="text" size="40">')
  91                     .val(selected_list.data('lsl-name'))
  92                 )
  93         );
  94
  95     d.dialog({
  96         autoOpen: true,
  97         modal: true,
  98         title: 'Edit list',
  99         width: 'max-content',
 100         buttons: [
 101             {
 102                 class: 'btn-delete',
 103                 icon: 'ui-icon-trash',
 104                 text: 'Delete',
 105                 click: () => {
 106                     delete_list(d);
 107                 },
 108             },
 109             {
 110                 text: 'Cancel',
 111                 click: ()=>{ d.dialog('destroy'); },
 112             },
 113             {
 114                 icon: 'ui-icon-disk',
 115                 text: 'OK',
 116                 click: () => {
 117                     save_list(d);
 118                 },
 119             },
 120         ],
 121     });
 122 }
 123 function delete_list(dlg) {
 124     // TODO: store all data including list items in a "Deleted"
 125     // pop-up with an "Undo" link that can be used to restore the list
 126     var lists_ver = lists_version;
 127     $.ajax( selected_list.data('lsl-uri'),
 128         { type: 'DELETE' }
 129     )
 130     .done((d)=>{
 131         lists_version = lists_ver + 1;
 132         var deleted_list = selected_list;
 133
 134         var new_selected = deleted_list.next();
 135         if (new_selected.length) {
 136             select_list(new_selected)
 137         }
 138         else {
 139             new_selected = deleted_list.prev();
 140             if (new_selected.length) {
 141                 select_list(new_selected);
 142             }
 143             else {
 144                 $('#page').removeClass('have-lists');
 145             }
 146         }
 147
 148         deleted_list.remove();
 149         dlg.dialog('destroy');
 150         got_lists_version(d.lists_version);
 151     });
 152         dlg.dialog('destroy');
 153         got_lists_version(d.lists_version);
 154     });
 155 }
 156 function load_lists() {
 157     return $.get(uri_base + '/api/v1/list')
 158     .always(()=>{
 159         var splash = $('#splash');
 160         if (splash.length) {
 161             var dur = splash.css('transition-duration');
 162             if (dur && dur.endsWith('s')) {
 163                 dur = 1000 * parseFloat(dur.substring(0, dur.length-1));
 164             }
 165             else
 166                 dur = 1000;
 167
 168             var now = Date.now();
 169             window.setTimeout(() => {
 170                 splash.addClass('done');
 171                 debug('scheduling splash removal in '+dur+'ms');
 172                 window.setTimeout(()=>{ splash.remove(); }, dur);
 173             },
 174                 Math.max(0, 500 - (now - start_time))
 175             );
 176         }
 177     })
 178     .done(data => {
 179         lists_version = data.lists_version;
 180
 181         var lists = $('#lists');
 182         lists.find('>li').addClass('old');
 183
 184         $.each(data.lists, (i, list) => {
 185             var list_id = uri_id(list.uri);
 186             var existing = lists.find('li#list-'+list_id);
 187             if (existing.length) {
 188                 existing.data('lsl-version', list.version)
 189                 .data('lsl-name', list.name)
 190                 .removeClass('old');
 191                 existing.find('span.list-name').text(list.name);
 192             }
 193             else {
 194                 var list_item = $('<li>')
 195                     .prop('id', 'list-'+list_id)
 196                     .data('lsl-uri', list.uri)
 197                     .data('lsl-version', list.version)
 198                     .data('lsl-name', list.name)
 199                     .append(
 200                         $('<span class="list-name">')
 201                         .text(list.name)
 202                     );
 203                 lists.append(list_item);
 204             }
 205         });
 206
 207         if (!selected_list || selected_list.hasClass('old'))
 208             select_list(lists.find('>li').eq(0));
 209
 210         lists.find('li.old').remove();
 211     });
 212 }
 213 function new_list_submission_done(data) {
 214     $('input[name="list_name"]').val('').trigger('change');
 215
 216     if (data.lists_version != lists_version) {
 217         load_lists()
 218         .done((d)=>{
 219             var new_list = $('li#list-'+uri_id(data.uri));
 220             if (new_list.length)
 221                 select_list(new_list);
 222         });
 223         return;
 224     }
 225
 226     console.log("TODO: easy-add new list");
 227
 228 }
 229 function handle_new_list_submission(){
 230     $.post(uri_base + '/api/v1/list',
 231         JSON.stringify({name:$('input[name="list_name"]').val()}))
 232     .done(new_list_submission_done);
 233     return false;
 234 }
 235 function new_list_item_submission_done(data) {
 236     got_lists_version(data.lists_version);
 237     got_list_version(data.list_version);
 238
 239     var item_data = selected_list.data('items');
 240
 241     var new_item = {
 242         description: $('#new-list-item input[type="text"]').val().trim(),
 243         done: $('#new-list-item input[type="checkbox"]').prop('checked'),
 244         version: 1,
 245     };
 246     item_data.items.push(new_item);
 247     item_data.version = data.version;
 248     add_list_item(new_item);
 249
 250     $('#new-list-item input').val('');
 251 }
 252 function handle_new_list_item_submission(){
 253     var description = $('#new-list-item input[type="text"]').val().trim();
 254     if (description.length == 0) return;
 255
 256     $.post(selected_list.data('lsl-uri'),
 257         JSON.stringify({
 258             description: description,
 259             done: $('#new-list-item input[type="checkbox"]').prop('checked')
 260         }),
 261     )
 262     .done(new_list_item_submission_done);
 263 }
 264 function handle_list_item_state_changed(ev) {
 265     var item = $(ev.target).closest('li');
 266     var cb = item.find('input[type="checkbox"]');
 267     var item_data = item.data('item');
 268
 269     $.ajax(item_data.uri,
 270         {   type: 'PUT',
 271             data: JSON.stringify({
 272                 version: item_data.version,
 273                 done: cb.prop('checked')})
 274         }
 275     )
 276     .done(function(resp){
 277         item_data.version = resp.version;
 278         got_lists_version(resp.lists_version);
 279         got_list_version(resp.list_version);
 280     });
 281 }
 282 $(function(){
 283     uri_base = $('#page').attr('lsl-uri-base');
 284     environment = $('#page').attr('lsl-environment');
 285     devel_env = environment == 'development';
 286
 287     $(document).ajaxStart(function(){
 288         $(document).addClass('blocked');
 289         window.setTimeout(
 290             function() {
 291                 $(document).addClass('busy');
 292             }
 293         );
 294     });
 295     $(document).ajaxStop(function(){
 296         $(document).removeClass('busy');
 297         window.setTimeout(
 298             function() {
 299                 $(document).removeClass('blocked');
 300             },
 301             1000 );
 302     });
 303     $.ajaxSetup({contentType: 'application/json'});
 304     $('button, input[type="submit"], input[type="reset"]').each(function(){
 305         var class_prop = $(this).prop('class');
 306         var icon_classes = class_prop.match(ui_icon_class_re);
 307         $(this).button({icon: icon_classes?icon_classes[0]:null});
 308     });
 309
 310     $('#new-list-sidebar-item button').on('click', handle_new_list_submission);
 311     $('#new-list-sidebar-item input').on('keypress', function(ev) {
 312         if (13 == ev.keyCode) {
 313             handle_new_list_submission();
 314             return false;
 315         }
 316
 317         return true;
 318     });
 319     $('#lists')
 320         .on('click', 'li', ev=>{
 321             select_list($(ev.target).closest('li'));
 322         });
 323     $('#list-edit-trigger').on('click', ev => {
 324         edit_list();
 325         return false;
 326     });
 327     $('#new-list-item button').on('click', handle_new_list_item_submission);
 328     $('#new-list-item input').on('keypress', ev => {
 329         if (13 == ev.keyCode) {
 330             handle_new_list_item_submission();
 331             return false;
 332         }
 333         return true;
 334     });
 335     $('#list-items').on('change', '.list-item-row input[type="checkbox"]', handle_list_item_state_changed);
 336     load_lists();
 337 });
 338 })();