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// Released under the MIT/X11 license
// http://www.opensource.org/licenses/mit-license.php
"use strict";

function hasXorgBugsCategory() {
  var catRE = /\s*\[cat:.*?\]\s*/; // RE for testing whether
  // there is already category tag in the Whiteboard

  var whiteboardContent = document.
    getElementById("status_whiteboard").value;
  return (catRE.test(whiteboardContent));
}

/**
 * Create a category list to the upper toolbar
 */
function makeBugCategoriesList(catList) {

  // Create <select> element and add it first blank <option>
  var targetDiv = document.getElementById("commit_top").parentNode;
  var categoryList = document.createElement("select");
  categoryList.setAttribute("id", "xorgBugsCategoriesSelect");
  categoryList.setAttribute("name", "xorgBugsCategoriesSelect");
  var optionElement = document.createElement("option");
  optionElement.value = null;
  optionElement.setAttribute("id", "catId_blank");
  optionElement.appendChild(document.createTextNode("---"));
  categoryList.appendChild(optionElement);

  // Fill-in <select> with <options>s for each category one
  catList.forEach(function (cat) {
    optionElement = document.createElement("option");
    optionElement.value = cat;
    optionElement.setAttribute("id", "catId_" + cat.replace(" ","").toLowerCase());
    optionElement.appendChild(document.createTextNode(cat));
    categoryList.appendChild(optionElement);
  });

  categoryList.addEventListener("change", function (evt) {
    var selectedCategory = "[cat:" + this.value + "]";
    var whiteboardElement = document.getElementById("status_whiteboard");

    if (hasXorgBugsCategory()) {
      whiteboardElement.value = whiteboardElement.
        value.replace(catRE, "");
    }
    addStuffToTextBox("status_whiteboard", selectedCategory);
  }, false);

  targetDiv.insertBefore(categoryList, targetDiv.firstChild);
}