index.js

   1
   2 function loadFile(url, callback) {
   3   var xmlhttp = new XMLHttpRequest();
   4   xmlhttp.onreadystatechange = function() {
   5     if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
   6       callback(JSON.parse(xmlhttp.responseText), url);
   7     }
   8   };
   9   xmlhttp.open('GET', url, true);
  10   xmlhttp.send();
  11 }
  12
  13 function setupSelectList(select, items, onselection) {
  14   for (var i = 0; i < items.length; i += 1) {
  15     var option = document.createElement("OPTION");
  16     option.innerHTML = items[i];
  17     select.appendChild(option);
  18   }
  19
  20   select.addEventListener("change", function(e) {
  21     onselection(items[select.selectedIndex]);
  22   });
  23
  24   if (select.selectedIndex >= 0) {
  25     onselection(items[select.selectedIndex]);
  26   }
  27 }
  28
  29 // Change the translation of the entire document
  30 function changeLanguage(language) {
  31   var mapping = translations[language];
  32   if (mapping) {
  33     for (var tr in mapping) {
  34       Array.from(document.getElementsByClassName(tr))
  35       .forEach(function(e) { e.innerText = mapping[tr]; })
  36     }
  37   }
  38 }
  39
  40 function setupAutocompleteList(input, items, onselection) {
  41   // the setupAutocompleteList function takes two arguments,
  42   // the text field element and an array of possible autocompleted values:
  43   var currentFocus = -1;
  44
  45   // sort numbers and other characters separately
  46   var collator = new Intl.Collator(undefined, {numeric: true, sensitivity: 'base'});
  47
  48   items.sort(collator.compare);
  49
  50   // execute a function when someone writes in the text field:
  51   input.oninput = function(e) {
  52     // clear images
  53     updateImages();
  54
  55     var value = this.value;
  56     // close any already open lists of autocompleted values
  57     closeAllLists();
  58
  59     if (!value) {
  60       return false;
  61     }
  62
  63     // create a DIV element that will contain the items (values):
  64     var list = document.createElement("DIV");
  65     list.setAttribute("id", this.id + "-autocomplete-list");
  66     list.setAttribute("class", "autocomplete-items");
  67     // append the DIV element as a child of the autocomplete container:
  68     this.parentNode.appendChild(list);
  69
  70     // for each item in the array...
  71     var c = 0;
  72     for (var i = 0; i < items.length; i += 1) {
  73       var item = items[i];
  74
  75       // match
  76       var j = item.toUpperCase().indexOf(value.toUpperCase());
  77       if (j < 0) {
  78         continue;
  79       }
  80
  81       c += 1;
  82       if (c >= 15) {
  83         var div = document.createElement("DIV");
  84         div.innerHTML = "...";
  85         list.appendChild(div);
  86         break;
  87       } else {
  88         var div = document.createElement("DIV");
  89         // make the matching letters bold:
  90         div.innerHTML = item.substr(0, j)
  91           + "<strong>" + item.substr(j, value.length) + "</strong>"
  92           + item.substr(j + value.length)
  93           + "<input type='hidden' value='" + item + "'>";
  94
  95         div.addEventListener("click", function(e) {
  96           // set text field to selected value
  97           input.value = this.getElementsByTagName("input")[0].value;
  98           // close the list of autocompleted values,
  99           // (or any other open lists of autocompleted values:
 100           closeAllLists();
 101           // callback
 102           onselection(input.value);
 103         });
 104
 105         list.appendChild(div);
 106       }
 107     }
 108   };
 109
 110   input.onkeydown = function(e) {
 111       var x = document.getElementById(this.id + "-autocomplete-list");
 112       if (x) x = x.getElementsByTagName("div");
 113       if (e.keyCode == 40) {
 114         // key down
 115         currentFocus += 1;
 116         // and and make the current item more visible:
 117         setActive(x);
 118       } else if (e.keyCode == 38) {
 119         // key up
 120         currentFocus -= 1;
 121         // and and make the current item more visible:
 122         setActive(x);
 123       } else if (e.keyCode == 13) {
 124         // If the ENTER key is pressed, prevent the form from being submitted,
 125         e.preventDefault();
 126         if (currentFocus > -1) {
 127           // and simulate a click on the "active" item:
 128           if (x) x[currentFocus].click();
 129         }
 130       }
 131   };
 132
 133   input.onfocus = function() {
 134     onselection(input.value);
 135   }
 136
 137   function setActive(x) {
 138     // a function to classify an item as "active":
 139     if (!x) return false;
 140     // start by removing the "active" class on all items:
 141     for (var i = 0; i < x.length; i++) {
 142       x[i].classList.remove("autocomplete-active");
 143     }
 144     if (currentFocus >= x.length) currentFocus = 0;
 145     if (currentFocus < 0) currentFocus = (x.length - 1);
 146     // add class "autocomplete-active":
 147     x[currentFocus].classList.add("autocomplete-active");
 148   }
 149
 150   function closeAllLists(elmnt) {
 151     // close all autocomplete lists in the document,
 152     // except the one passed as an argument:
 153     var x = document.getElementsByClassName("autocomplete-items");
 154     for (var i = 0; i < x.length; i++) {
 155       if (elmnt != x[i] && elmnt != input) {
 156         x[i].parentNode.removeChild(x[i]);
 157       }
 158     }
 159   }
 160
 161   // execute a function when someone clicks in the document:
 162   document.addEventListener("click", function (e) {
 163       closeAllLists(e.target);
 164   });
 165 }
 166
 167 function $(id) {
 168   return document.getElementById(id);
 169 }
 170
 171 function findCommonPrefix(files) {
 172     var A = files.concat().sort();
 173     var first = A[0];
 174     var last = A[A.length - 1];
 175     var L = first.length;
 176     var i = 0;
 177     while (i < L && first.charAt(i) === last.charAt(i)) {
 178       i += 1;
 179     }
 180     return first.substring(0, i);
 181 }
 182
 183 function updateImages(version, commit, model, image_link, mobj) {
 184   // add download button for image
 185   function addLink(label, tags, file, help_id) {
 186     var a = document.createElement('A');
 187     a.classList.add('download-link');
 188     a.href = image_link
 189       .replace('%target', mobj.target)
 190       .replace('%release', version)
 191       .replace('%file', file);
 192     var span = document.createElement('SPAN');
 193     span.appendChild(document.createTextNode(''));
 194     a.appendChild(span);
 195
 196     // add sub label
 197     if (tags.length > 0) {
 198       a.appendChild(document.createTextNode(label + ' (' + tags.join(', ') + ')'));
 199     } else {
 200       a.appendChild(document.createTextNode(label));
 201     }
 202
 203     if (config.showHelp) {
 204       a.onmouseover = function() {
 205         // hide all help texts
 206         Array.from(document.getElementsByClassName('download-help'))
 207           .forEach(function(e) { e.style.display = 'none'; });
 208         $(help_id).style.display = 'block';
 209       };
 210     }
 211
 212     $('download-links').appendChild(a);
 213   }
 214
 215   // remove all download links
 216   Array.from(document.getElementsByClassName('download-link'))
 217     .forEach(function(e) { e.remove(); });
 218
 219   // hide all help texts
 220   Array.from(document.getElementsByClassName('download-help'))
 221     .forEach(function(e) { e.style.display = 'none'; });
 222
 223   if (version && commit && model && image_link && mobj) {
 224     var target = mobj.target;
 225     var images = mobj.images;
 226
 227     // fill out build info
 228     $('image-model').innerText = model;
 229     $('image-target').innerText = target;
 230     $('image-release').innerText = version;
 231     $('image-commit').innerText = commit;
 232
 233     var prefix = findCommonPrefix(images);
 234     var entries = {
 235       'FACTORY': [],
 236       'SYSUPGRADE': [],
 237       'KERNEL': [],
 238       'ROOTFS': [],
 239       'SDCARD': [],
 240       'TFTP': [],
 241       'OTHER': []
 242     };
 243
 244     images.sort();
 245
 246     for (var i in images) {
 247       var image = images[i];
 248       var lc = image.toLowerCase()
 249       if (lc.includes('factory')) {
 250         entries['FACTORY'].push(image);
 251       } else if (lc.includes('sysupgrade')) {
 252         entries['SYSUPGRADE'].push(image);
 253       } else if (lc.includes('kernel') || lc.includes('zimage') || lc.includes('uimage')) {
 254         entries['KERNEL'].push(image);
 255       } else if (lc.includes('rootfs')) {
 256         entries['ROOTFS'].push(image);
 257       } else if (lc.includes('sdcard')) {
 258         entries['SDCARD'].push(image);
 259       } else if (lc.includes('tftp')) {
 260         entries['TFTP'].push(image);
 261       } else {
 262         entries['OTHER'].push(image);
 263       }
 264     }
 265
 266     function extractTags(prefix, image) {
 267       var all = image.substring(prefix.length).split('.')[0].split('-');
 268       var ignore = ['', 'kernel', 'zImage', 'uImage', 'factory', 'sysupgrade', 'rootfs', 'sdcard'];
 269       return all.filter(function (el) { return !ignore.includes(el); });
 270     }
 271
 272     for (var category in entries) {
 273       var images = entries[category];
 274       for (var i in images) {
 275         var image = images[i];
 276         var tags = (images.length > 1) ? extractTags(prefix, image) : [];
 277         addLink(category, tags, image, category.toLowerCase() + '-help');
 278       }
 279     }
 280
 281     $('images').style.display = 'block';
 282   } else {
 283     $('images').style.display = 'none';
 284   }
 285 }
 286
 287 // hide fields
 288 updateImages();
 289 changeLanguage(config.language);
 290
 291 setupSelectList($("releases"), Object.keys(config.versions), function(version) {
 292   loadFile(config.versions[version], function(obj) {
 293     setupAutocompleteList($("models"), Object.keys(obj['models']), function(model) {
 294       if (model in obj['models']) {
 295         var link = obj.link;
 296         var commit = obj.commit;
 297         var mobj = obj['models'][model];
 298         updateImages(version, commit, model, link, mobj);
 299       } else {
 300         updateImages();
 301       }
 302     });
 303
 304     // trigger model update when selected version changes
 305     $("models").onfocus();
 306   });
 307 });