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({
  23         'lsl-uri': data.uri,
  24         'lsl-version': data.version,
  25         'lsl-done': data.done});
  26     var cb = $('<input type="checkbox">');
  27     if (data.done) cb.prop('checked', true);
  28     item.append(cb);
  29     item.append($('<span class="description">').text(data.description || ''));
  30     item.append($('<span class="edit-trigger">').text('…'));
  31
  32     $('#list-items').append(item);
  33     $('#list-contents').addClass('have-list-items');
  34 }
  35 function got_lists_version(new_version) {
  36     if (new_version != lists_version)
  37         window.setTimeout(load_lists);
  38 }
  39 function got_list_version(new_version) {
  40     if (new_version != selected_list.data('lsl-version'))
  41         window.setTimeout(
  42             () => load_list_items(selected_list.data('lsl-uri'), selected_list));
  43 }
  44 function load_list_items(uri, target) {
  45     $.get(uri)
  46     .done(item_data => {
  47         target.data('lsl-items', item_data.items);
  48         target.data('lsl-version', item_data.version);
  49
  50         // TODO: merge new items into existing ones
  51         // keep track of the last existing item, and append new one
  52         // after it, prepending if there is no last existing item
  53         // the newly prepended/inserted item becomes the last existing
  54         $('#list-contents').removeClass('have-list-items');
  55         var item_list = $('#list-items').empty();
  56
  57         $.each(item_data.items, (i,item) => {
  58             add_list_item(item);
  59         });
  60
  61         got_lists_version(item_data.lists_version);
  62     });
  63 }
  64 function select_list(new_selected_list) {
  65     if (new_selected_list && selected_list
  66         && new_selected_list.length && selected_list.length
  67         && new_selected_list.get(0) == selected_list.get(0)
  68     )
  69         return;
  70
  71     if (new_selected_list && !new_selected_list.length)
  72         new_selected_list = null;
  73
  74     $('#page').toggleClass('have-lists', !!new_selected_list);
  75
  76     if (selected_list)
  77         selected_list.removeClass('selected');
  78
  79     if (new_selected_list) {
  80         load_list_items(new_selected_list.data('lsl-uri'), new_selected_list);
  81         new_selected_list.addClass('selected');
  82         $('#selected-list-name').text(new_selected_list.data('lsl-name'));
  83     }
  84
  85     selected_list = new_selected_list;
  86 }
  87 function edit_list() {
  88     var d = $('<div>')
  89         .append(
  90             $('<fieldset>')
  91                 .append(
  92                     $('<legend>').text('List name'),
  93                     $('<input type="text" size="40">')
  94                     .val(selected_list.data('lsl-name'))
  95                 )
  96         );
  97
  98     d.dialog({
  99         autoOpen: true,
 100         modal: true,
 101         title: 'Edit list',
 102         width: 'max-content',
 103         buttons: [
 104             {
 105                 class: 'btn-delete',
 106                 icon: 'ui-icon-trash',
 107                 click: () => {
 108                     delete_list(d);
 109                 },
 110             },
 111             {
 112                 text: 'Cancel',
 113                 click: ()=>{ d.dialog('destroy'); },
 114             },
 115             {
 116                 icon: 'ui-icon-disk',
 117                 text: 'OK',
 118                 click: () => {
 119                     save_list(d);
 120                 },
 121             },
 122         ],
 123     });
 124 }
 125 function delete_list(dlg) {
 126     // TODO: store all data including list items in a "Deleted"
 127     // pop-up with an "Undo" link that can be used to restore the list
 128     var lists_ver = lists_version;
 129     $.ajax( selected_list.data('lsl-uri'),
 130         { type: 'DELETE' }
 131     )
 132     .done((d)=>{
 133         lists_version = lists_ver + 1;
 134         var deleted_list = selected_list;
 135
 136         var new_selected = deleted_list.next();
 137         if (new_selected.length) {
 138             select_list(new_selected)
 139         }
 140         else {
 141             new_selected = deleted_list.prev();
 142             if (new_selected.length) {
 143                 select_list(new_selected);
 144             }
 145             else {
 146                 $('#page').removeClass('have-lists');
 147             }
 148         }
 149
 150         deleted_list.remove();
 151         dlg.dialog('destroy');
 152         got_lists_version(d.lists_version);
 153     });
 154 }
 155 function save_list(dlg) {
 156     var lists_ver = lists_version;
 157     var new_name = dlg.find('input[type="text"]').val();
 158
 159     $.ajax( selected_list.data('lsl-uri'),
 160         {   type: 'PUT',
 161             data: JSON.stringify({ name: new_name,
 162                     version: selected_list.data('lsl-version')})
 163         }
 164     )
 165     .done((d)=>{
 166         lists_version = lists_ver + 1;
 167
 168         selected_list.find('.list-name').text(new_name);
 169         selected_list.data('lsl-name', new_name);
 170         $('#selected-list-name').text(new_name);
 171
 172         dlg.dialog('destroy');
 173         got_lists_version(d.lists_version);
 174     });
 175 }
 176 function load_lists() {
 177     return $.get(uri_base + '/api/v1/list')
 178     .always(()=>{
 179         var splash = $('#splash');
 180         if (splash.length) {
 181             var dur = splash.css('transition-duration');
 182             if (dur && dur.endsWith('s')) {
 183                 dur = 1000 * parseFloat(dur.substring(0, dur.length-1));
 184             }
 185             else
 186                 dur = 1000;
 187
 188             var now = Date.now();
 189             window.setTimeout(() => {
 190                 splash.addClass('done');
 191                 debug('scheduling splash removal in '+dur+'ms');
 192                 window.setTimeout(()=>{ splash.remove(); }, dur);
 193             },
 194                 Math.max(0, 500 - (now - start_time))
 195             );
 196         }
 197     })
 198     .done(data => {
 199         lists_version = data.lists_version;
 200
 201         var lists = $('#lists');
 202         lists.find('>li').addClass('old');
 203
 204         $.each(data.lists, (i, list) => {
 205             var list_id = uri_id(list.uri);
 206             var existing = lists.find('li#list-'+list_id);
 207             if (existing.length) {
 208                 existing.data('lsl-version', list.version)
 209                 .data('lsl-name', list.name)
 210                 .removeClass('old');
 211                 existing.find('span.list-name').text(list.name);
 212             }
 213             else {
 214                 var list_item = $('<li>')
 215                     .prop('id', 'list-'+list_id)
 216                     .data('lsl-uri', list.uri)
 217                     .data('lsl-version', list.version)
 218                     .data('lsl-name', list.name)
 219                     .append(
 220                         $('<span class="list-name">')
 221                         .text(list.name)
 222                     );
 223                 lists.append(list_item);
 224             }
 225         });
 226
 227         if (!selected_list || selected_list.hasClass('old'))
 228             select_list(lists.find('>li').eq(0));
 229
 230         lists.find('li.old').remove();
 231     });
 232 }
 233 function new_list_submission_done(data) {
 234     $('input[name="list_name"]').val('').trigger('change');
 235
 236     if (data.lists_version != lists_version) {
 237         load_lists()
 238         .done((d)=>{
 239             var new_list = $('li#list-'+uri_id(data.uri));
 240             if (new_list.length)
 241                 select_list(new_list);
 242         });
 243         return;
 244     }
 245
 246     console.log("TODO: easy-add new list");
 247
 248 }
 249 function handle_new_list_submission(){
 250     $.post(uri_base + '/api/v1/list',
 251         JSON.stringify({name:$('input[name="list_name"]').val()}))
 252     .done(new_list_submission_done);
 253     return false;
 254 }
 255 function new_list_item_submission_done(data) {
 256     got_lists_version(data.lists_version);
 257     selected_list.data('lsl-version', selected_list.data('lsl-version') + 1 );
 258     got_list_version(data.list_version);
 259
 260     var new_item = {
 261         description: $('#new-list-item input[type="text"]').val().trim(),
 262         done: $('#new-list-item input[type="checkbox"]').prop('checked'),
 263         version: 1,
 264         uri: data.uri,
 265     };
 266     selected_list.data('lsl-items').push(new_item);
 267     add_list_item(new_item);
 268
 269     $('#new-list-item input').val('');
 270 }
 271 function handle_new_list_item_submission(){
 272     var description = $('#new-list-item input[type="text"]').val().trim();
 273     if (description.length == 0) return;
 274
 275     $.post(selected_list.data('lsl-uri'),
 276         JSON.stringify({
 277             description: description,
 278             done: $('#new-list-item input[type="checkbox"]').prop('checked')
 279         }),
 280     )
 281     .done(new_list_item_submission_done);
 282 }
 283 function handle_list_item_state_changed(ev) {
 284     var item = $(ev.target).closest('li');
 285     var cb = item.find('input[type="checkbox"]');
 286
 287     $.ajax(item.data('lsl-uri'),
 288         {   type: 'PUT',
 289             data: JSON.stringify({
 290                 version: item.data('lsl-version'),
 291                 done: cb.prop('checked')})
 292         }
 293     )
 294     .done(function(resp){
 295         item.data('lsl-version', resp.version);
 296         got_lists_version(resp.lists_version);
 297         selected_list.data('lsl-version', selected_list.data('lsl-version')+1);
 298         got_list_version(resp.list_version);
 299     });
 300 }
 301 $(function(){
 302     uri_base = $('#page').attr('lsl-uri-base');
 303     environment = $('#page').attr('lsl-environment');
 304     devel_env = environment == 'development';
 305
 306     $(document).ajaxStart(function(){
 307         $(document).addClass('blocked');
 308         window.setTimeout(
 309             function() {
 310                 $(document).addClass('busy');
 311             }
 312         );
 313     });
 314     $(document).ajaxStop(function(){
 315         $(document).removeClass('busy');
 316         window.setTimeout(
 317             function() {
 318                 $(document).removeClass('blocked');
 319             },
 320             1000 );
 321     });
 322     $.ajaxSetup({contentType: 'application/json'});
 323     $('button, input[type="submit"], input[type="reset"]').each(function(){
 324         var class_prop = $(this).prop('class');
 325         var icon_classes = class_prop.match(ui_icon_class_re);
 326         $(this).button({icon: icon_classes?icon_classes[0]:null});
 327     });
 328
 329     $('#new-list-sidebar-item button').on('click', handle_new_list_submission);
 330     $('#new-list-sidebar-item input').on('keypress', function(ev) {
 331         if (13 == ev.keyCode) {
 332             handle_new_list_submission();
 333             return false;
 334         }
 335
 336         return true;
 337     });
 338     $('#lists')
 339         .on('click', 'li', ev=>{
 340             select_list($(ev.target).closest('li'));
 341         });
 342     $('#list-edit-trigger').on('click', ev => {
 343         edit_list();
 344         return false;
 345     });
 346     $('#new-list-item button').on('click', handle_new_list_item_submission);
 347     $('#new-list-item input').on('keypress', ev => {
 348         if (13 == ev.keyCode) {
 349             handle_new_list_item_submission();
 350             return false;
 351         }
 352         return true;
 353     });
 354     $('#list-items').on('change', '.list-item-row input[type="checkbox"]', handle_list_item_state_changed);
 355     load_lists();
 356 });
 357 })();