apps/workbench/app/assets/javascripts/selection.js

   1 //= require jquery
   2 //= require jquery_ujs
   3
   4 /** Javascript for local persistent selection. */
   5
   6 get_selection_list = null;
   7 form_selection_sources = {};
   8
   9 jQuery(function($){
  10     var storage = localStorage; // sessionStorage
  11
  12     get_selection_list = function() {
  13         if (!storage.persistentSelection) {
  14             storage.persistentSelection = JSON.stringify([]);
  15         }
  16         return JSON.parse(storage.persistentSelection);
  17     }
  18
  19     var put_storage = function(lst) {
  20         storage.persistentSelection = JSON.stringify(lst);
  21     }
  22
  23     var add_selection = function(uuid, name, href, type) {
  24         var lst = get_selection_list();
  25         lst.push({"uuid": uuid, "name": name, "href": href, "type": type});
  26         put_storage(lst);
  27         update_count();
  28     };
  29
  30     var remove_selection = function(uuid) {
  31         var lst = get_selection_list();
  32         for (var i = 0; i < lst.length; i++) {
  33             if (lst[i].uuid == uuid) {
  34                 lst.splice(i, 1);
  35                 i--;
  36             }
  37         }
  38         put_storage(lst);
  39         update_count();
  40     };
  41
  42     var remove_selection_click = function(e) {
  43         remove_selection($(this).val());
  44     };
  45
  46     var clear_selections = function() {
  47         put_storage([]);
  48         update_count();
  49     }
  50
  51     var update_count = function(e) {
  52         var lst = get_selection_list();
  53         $("#persistent-selection-count").text(lst.length);
  54         if (lst.length > 0) {
  55             $('#selection-form-content').html(
  56                 '<li><a href="#" id="clear_selections_button">Clear selections</a></li>'
  57                     + '<li><input type="submit" name="combine_selected_files_into_collection" '
  58                     + ' id="combine_selected_files_into_collection" '
  59                     + ' value="Combine selected collections and files into a new collection" /></li>'
  60                     + '<li class="notification"><table style="width: 100%"></table></li>');
  61
  62             for (var i = 0; i < lst.length; i++) {
  63                 $('#selection-form-content > li > table').append("<tr>"
  64                                                        + "<td>"
  65                                                        + "<input class='remove-selection' name='selection[]' type='checkbox' value='" + lst[i].uuid + "' checked='true' data-stoppropagation='true' />"
  66                                                        + "</td>"
  67
  68                                                        + "<td>"
  69                                                        + "<div style='padding-left: 1em'><a href=\"" + lst[i].href + "\">" + lst[i].name + "</a></div>"
  70                                                        + "</td>"
  71
  72                                                        + "<td style=\"vertical-align: top\">"
  73                                                        + "<span style=\"padding-right: 1em\">" + lst[i].type + "</span>"
  74                                                        + "</td>"
  75
  76                                                        + "</tr>");
  77             }
  78         } else {
  79             $('#selection-form-content').html("<li class='notification empty'>No selections.</li>");
  80         }
  81
  82         var checkboxes = $('.persistent-selection:checkbox');
  83         for (i = 0; i < checkboxes.length; i++) {
  84             for (var j = 0; j < lst.length; j++) {
  85                 if (lst[j].uuid == $(checkboxes[i]).val()) {
  86                     checkboxes[i].checked = true;
  87                     break;
  88                 }
  89             }
  90             if (j == lst.length) {
  91                 checkboxes[i].checked = false;
  92             }
  93         }
  94
  95         $('.remove-selection').on('click', remove_selection_click);
  96         $('#clear_selections_button').on('click', clear_selections);
  97     };
  98
  99     $(document).
 100         on('change', '.persistent-selection:checkbox', function(e) {
 101             //console.log($(this));
 102             //console.log($(this).val());
 103
 104             var inc = 0;
 105             if ($(this).is(":checked")) {
 106                 add_selection($(this).val(), $(this).attr('friendly_name'), $(this).attr('href'), $(this).attr('friendly_type'));
 107             }
 108             else {
 109                 remove_selection($(this).val());
 110             }
 111         });
 112
 113
 114     $(window).on('load storage', update_count);
 115
 116     $('#selection-form-content').on("click", function(e) {
 117         e.stopPropagation();
 118     });
 119 });
 120
 121 add_form_selection_sources = null;
 122 select_form_sources  = null;
 123
 124 (function() {
 125     var form_selection_sources = {};
 126     add_form_selection_sources = function (src) {
 127         for (var i = 0; i < src.length; i++) {
 128             var t = form_selection_sources[src[i].type];
 129             if (!t) {
 130                 t = form_selection_sources[src[i].type] = {};
 131             }
 132             if (!t[src[i].uuid]) {
 133                 t[src[i].uuid] = src[i];
 134             }
 135         }
 136     };
 137
 138     select_form_sources = function(type) {
 139         var ret = [];
 140
 141         if (get_selection_list) {
 142             var lst = get_selection_list();
 143             if (lst.length > 0) {
 144                 var text = "&horbar; Selections &horbar;";
 145                 var span = document.createElement('span');
 146                 span.innerHTML = text;
 147                 ret.push({text: span.innerHTML, value: "***invalid***"});
 148
 149                 for (var i = 0; i < lst.length; i++) {
 150                     if (lst[i].type == type) {
 151                         ret.push({text: lst[i].name, value: lst[i].uuid})
 152                     }
 153                 }
 154             }
 155         }
 156
 157         var text = "&horbar; Recent &horbar;";
 158         var span = document.createElement('span');
 159         span.innerHTML = text;
 160         ret.push({text: span.innerHTML, value: "***invalid***"});
 161
 162         var t = form_selection_sources[type];
 163         for (var key in t) {
 164             if (t.hasOwnProperty(key)) {
 165                 var obj = t[key];
 166                 ret.push({text: obj.name, value: obj.uuid})
 167             }
 168         }
 169         return ret;
 170     };
 171 })();
 172