text: // CodeMirror, copyright (c) by Marijn Haverbeke and others
  // Distributed under an MIT license: http://codemirror.net/LICENSE
  
  (function(mod) {
      if (typeof exports == "object" && typeof module == "object") // CommonJS
          mod(require("../../lib/codemirror"));
      else if (typeof define == "function" && define.amd) // AMD
          define(["../../lib/codemirror"], mod);
      else // Plain browser env
          mod(CodeMirror);
  })(function(CodeMirror) {
      "use strict";
  
      var HINT_ELEMENT_CLASS        = "CodeMirror-hint";
      var ACTIVE_HINT_ELEMENT_CLASS = "CodeMirror-hint-active";
  
      // This is the old interface, kept around for now to stay
      // backwards-compatible.
      CodeMirror.showHint = function(cm, getHints, options) {
          if (!getHints) return cm.showHint(options);
          if (options && options.async) getHints.async = true;
          var newOpts = {hint: getHints};
          if (options) for (var prop in options) newOpts[prop] = options[prop];
          return cm.showHint(newOpts);
      };
  
      var asyncRunID = 0;
      function retrieveHints(getter, cm, options, then) {
          if (getter.async) {
              var id = ++asyncRunID;
              getter(cm, function(hints) {
                  if (asyncRunID == id) then(hints);
              }, options);
          } else {
              then(getter(cm, options));
          }
      }
  
      CodeMirror.defineExtension("showHint", function(options) {
          // We want a single cursor position.
          if (this.listSelections().length > 1 || this.somethingSelected()) return;
  
          if (this.state.completionActive) this.state.completionActive.close();
          var completion = this.state.completionActive = new Completion(this, options);
          var getHints = completion.options.hint;
          if (!getHints) return;
  
          CodeMirror.signal(this, "startCompletion", this);
          return retrieveHints(getHints, this, completion.options, function(hints) { completion.showHints(hints); });
      });
  
      function Completion(cm, options) {
          this.cm = cm;
          this.options = this.buildOptions(options);
          this.widget = this.onClose = null;
      }
  
      Completion.prototype = {
          close: function() {
              if (!this.active()) return;
              this.cm.state.completionActive = null;
  
              if (this.widget) this.widget.close();
              if (this.onClose) this.onClose();
              CodeMirror.signal(this.cm, "endCompletion", this.cm);
          },
  
          active: function() {
              return this.cm.state.completionActive == this;
          },
  
          pick: function(data, i) {
              var completion = data.list[i];
              if (completion.hint) completion.hint(this.cm, data, completion);
              else this.cm.replaceRange(getText(completion), completion.from || data.from,
                  completion.to || data.to, "complete");
              CodeMirror.signal(data, "pick", completion);
              this.close();
          },
  
          showHints: function(data) {
              if (!data || !data.list.length || !this.active()) return this.close();
  
              if (this.options.completeSingle && data.list.length == 1)
                  this.pick(data, 0);
              else
                  this.showWidget(data);
          },
  
          showWidget: function(data) {
              this.widget = new Widget(this, data);
              CodeMirror.signal(data, "shown");
  
              var debounce = 0, completion = this, finished;
              var closeOn = this.options.closeCharacters;
              var startPos = this.cm.getCursor(), startLen = this.cm.getLine(startPos.line).length;
  
              var requestAnimationFrame = window.requestAnimationFrame || function(fn) {
                      return setTimeout(fn, 1000/60);
                  };
              var cancelAnimationFrame = window.cancelAnimationFrame || clearTimeout;
  
              function done() {
                  if (finished) return;
                  finished = true;
                  completion.close();
                  completion.cm.off("cursorActivity", activity);
                  if (data) CodeMirror.signal(data, "close");
              }
  
              function update() {
                  if (finished) return;
                  CodeMirror.signal(data, "update");
                  retrieveHints(completion.options.hint, completion.cm, completion.options, finishUpdate);
              }
              function finishUpdate(data_) {
                  data = data_;
                  if (finished) return;
                  if (!data || !data.list.length) return done();
                  if (completion.widget) completion.widget.close();
                  completion.widget = new Widget(completion, data);
              }
  
              function clearDebounce() {
                  if (debounce) {
                      cancelAnimationFrame(debounce);
                      debounce = 0;
                  }
              }
  
              function activity() {
                  clearDebounce();
                  var pos = completion.cm.getCursor(), line = completion.cm.getLine(pos.line);
                  if (pos.line != startPos.line || line.length - pos.ch != startLen - startPos.ch ||
                      pos.ch < startPos.ch || completion.cm.somethingSelected() ||
                      (pos.ch && closeOn.test(line.charAt(pos.ch - 1)))) {
                      completion.close();
                  } else {
                      debounce = requestAnimationFrame(update);
                      if (completion.widget) completion.widget.close();
                  }
              }
              this.cm.on("cursorActivity", activity);
              this.onClose = done;
          },
  
          buildOptions: function(options) {
              var editor = this.cm.options.hintOptions;
              var out = {};
              for (var prop in defaultOptions) out[prop] = defaultOptions[prop];
              if (editor) for (var prop in editor)
                  if (editor[prop] !== undefined) out[prop] = editor[prop];
              if (options) for (var prop in options)
                  if (options[prop] !== undefined) out[prop] = options[prop];
              return out;
          }
      };
  
      function getText(completion) {
          if (typeof completion == "string") return completion;
          else return completion.text;
      }
  
      function buildKeyMap(completion, handle) {
          var baseMap = {
              Up: function() {handle.moveFocus(-1);},
              Down: function() {handle.moveFocus(1);},
              PageUp: function() {handle.moveFocus(-handle.menuSize() + 1, true);},
              PageDown: function() {handle.moveFocus(handle.menuSize() - 1, true);},
              Home: function() {handle.setFocus(0);},
              End: function() {handle.setFocus(handle.length - 1);},
              Enter: handle.pick,
              Tab: handle.pick,
              Esc: handle.close
          };
          var custom = completion.options.customKeys;
          var ourMap = custom ? {} : baseMap;
          function addBinding(key, val) {
              var bound;
              if (typeof val != "string")
                  bound = function(cm) { return val(cm, handle); };
              // This mechanism is deprecated
              else if (baseMap.hasOwnProperty(val))
                  bound = baseMap[val];
              else
                  bound = val;
              ourMap[key] = bound;
          }
          if (custom)
              for (var key in custom) if (custom.hasOwnProperty(key))
                  addBinding(key, custom[key]);
          var extra = completion.options.extraKeys;
          if (extra)
              for (var key in extra) if (extra.hasOwnProperty(key))
                  addBinding(key, extra[key]);
          return ourMap;
      }
  
      function getHintElement(hintsElement, el) {
          while (el && el != hintsElement) {
              if (el.nodeName.toUpperCase() === "LI" && el.parentNode == hintsElement) return el;
              el = el.parentNode;
          }
      }
  
      function Widget(completion, data) {
          this.completion = completion;
          this.data = data;
          var widget = this, cm = completion.cm;
  
          var hints = this.hints = document.createElement("ul");
          hints.className = "CodeMirror-hints";
          this.selectedHint = data.selectedHint || 0;
  
          var completions = data.list;
          for (var i = 0; i < completions.length; ++i) {
              var elt = hints.appendChild(document.createElement("li")), cur = completions[i];
              var className = HINT_ELEMENT_CLASS + (i != this.selectedHint ? "" : " " + ACTIVE_HINT_ELEMENT_CLASS);
              if (cur.className != null) className = cur.className + " " + className;
              elt.className = className;
              if (cur.render) cur.render(elt, data, cur);
              else elt.appendChild(document.createTextNode(cur.displayText || getText(cur)));
              elt.hintId = i;
          }
  
          var pos = cm.cursorCoords(completion.options.alignWithWord ? data.from : null);
          var left = pos.left, top = pos.bottom, below = true;
          hints.style.left = left + "px";
          hints.style.top = top + "px";
          // If we're at the edge of the screen, then we want the menu to appear on the left of the cursor.
          var winW = window.innerWidth || Math.max(document.body.offsetWidth, document.documentElement.offsetWidth);
          var winH = window.innerHeight || Math.max(document.body.offsetHeight, document.documentElement.offsetHeight);
          (completion.options.container || document.body).appendChild(hints);
          var box = hints.getBoundingClientRect(), overlapY = box.bottom - winH;
          if (overlapY > 0) {
              var height = box.bottom - box.top, curTop = pos.top - (pos.bottom - box.top);
              if (curTop - height > 0) { // Fits above cursor
                  hints.style.top = (top = pos.top - height) + "px";
                  below = false;
              } else if (height > winH) {
                  hints.style.height = (winH - 5) + "px";
                  hints.style.top = (top = pos.bottom - box.top) + "px";
                  var cursor = cm.getCursor();
                  if (data.from.ch != cursor.ch) {
                      pos = cm.cursorCoords(cursor);
                      hints.style.left = (left = pos.left) + "px";
                      box = hints.getBoundingClientRect();
                  }
              }
          }
          var overlapX = box.right - winW;
          if (overlapX > 0) {
              if (box.right - box.left > winW) {
                  hints.style.width = (winW - 5) + "px";
                  overlapX -= (box.right - box.left) - winW;
              }
              hints.style.left = (left = pos.left - overlapX) + "px";
          }
  
          cm.addKeyMap(this.keyMap = buildKeyMap(completion, {
              moveFocus: function(n, avoidWrap) { widget.changeActive(widget.selectedHint + n, avoidWrap); },
              setFocus: function(n) { widget.changeActive(n); },
              menuSize: function() { return widget.screenAmount(); },
              length: completions.length,
              close: function() { completion.close(); },
              pick: function() { widget.pick(); },
              data: data
          }));
  
          if (completion.options.closeOnUnfocus) {
              var closingOnBlur;
              cm.on("blur", this.onBlur = function() { closingOnBlur = setTimeout(function() { completion.close(); }, 100); });
              cm.on("focus", this.onFocus = function() { clearTimeout(closingOnBlur); });
          }
  
          var startScroll = cm.getScrollInfo();
          cm.on("scroll", this.onScroll = function() {
              var curScroll = cm.getScrollInfo(), editor = cm.getWrapperElement().getBoundingClientRect();
              var newTop = top + startScroll.top - curScroll.top;
              var point = newTop - (window.pageYOffset || (document.documentElement || document.body).scrollTop);
              if (!below) point += hints.offsetHeight;
              if (point <= editor.top || point >= editor.bottom) return completion.close();
              hints.style.top = newTop + "px";
              hints.style.left = (left + startScroll.left - curScroll.left) + "px";
          });
  
          CodeMirror.on(hints, "dblclick", function(e) {
              var t = getHintElement(hints, e.target || e.srcElement);
              if (t && t.hintId != null) {widget.changeActive(t.hintId); widget.pick();}
          });
  
          CodeMirror.on(hints, "click", function(e) {
              var t = getHintElement(hints, e.target || e.srcElement);
              if (t && t.hintId != null) {
                  widget.changeActive(t.hintId);
                  if (completion.options.completeOnSingleClick) widget.pick();
              }
          });
  
          CodeMirror.on(hints, "mousedown", function() {
              setTimeout(function(){cm.focus();}, 20);
          });
  
          CodeMirror.signal(data, "select", completions[0], hints.firstChild);
          return true;
      }
  
      Widget.prototype = {
          close: function() {
              if (this.completion.widget != this) return;
              this.completion.widget = null;
              this.hints.parentNode.removeChild(this.hints);
              this.completion.cm.removeKeyMap(this.keyMap);
  
              var cm = this.completion.cm;
              if (this.completion.options.closeOnUnfocus) {
                  cm.off("blur", this.onBlur);
                  cm.off("focus", this.onFocus);
              }
              cm.off("scroll", this.onScroll);
          },
  
          pick: function() {
              this.completion.pick(this.data, this.selectedHint);
          },
  
          changeActive: function(i, avoidWrap) {
              if (i >= this.data.list.length)
                  i = avoidWrap ? this.data.list.length - 1 : 0;
              else if (i < 0)
                  i = avoidWrap ? 0  : this.data.list.length - 1;
              if (this.selectedHint == i) return;
              var node = this.hints.childNodes[this.selectedHint];
              node.className = node.className.replace(" " + ACTIVE_HINT_ELEMENT_CLASS, "");
              node = this.hints.childNodes[this.selectedHint = i];
              node.className += " " + ACTIVE_HINT_ELEMENT_CLASS;
              if (node.offsetTop < this.hints.scrollTop)
                  this.hints.scrollTop = node.offsetTop - 3;
              else if (node.offsetTop + node.offsetHeight > this.hints.scrollTop + this.hints.clientHeight)
                  this.hints.scrollTop = node.offsetTop + node.offsetHeight - this.hints.clientHeight + 3;
              CodeMirror.signal(this.data, "select", this.data.list[this.selectedHint], node);
          },
  
          screenAmount: function() {
              return Math.floor(this.hints.clientHeight / this.hints.firstChild.offsetHeight) || 1;
          }
      };
  
      CodeMirror.registerHelper("hint", "auto", function(cm, options) {
          var helpers = cm.getHelpers(cm.getCursor(), "hint"), words;
          if (helpers.length) {
              for (var i = 0; i < helpers.length; i++) {
                  var cur = helpers[i](cm, options);
                  if (cur && cur.list.length) return cur;
              }
          } else if (words = cm.getHelper(cm.getCursor(), "hintWords")) {
              if (words) return CodeMirror.hint.fromList(cm, {words: words});
          } else if (CodeMirror.hint.anyword) {
              return CodeMirror.hint.anyword(cm, options);
          }
      });
  
      CodeMirror.registerHelper("hint", "fromList", function(cm, options) {
          var cur = cm.getCursor(), token = cm.getTokenAt(cur);
          var found = [];
          for (var i = 0; i < options.words.length; i++) {
              var word = options.words[i];
              if (word.slice(0, token.string.length) == token.string)
                  found.push(word);
          }
  
          if (found.length) return {
              list: found,
              from: CodeMirror.Pos(cur.line, token.start),
              to: CodeMirror.Pos(cur.line, token.end)
          };
      });
  
      CodeMirror.commands.autocomplete = CodeMirror.showHint;
  
      var defaultOptions = {
          hint: CodeMirror.hint.auto,
          completeSingle: true,
          alignWithWord: true,
          closeCharacters: /[\s()\[\]{};:>,]/,
          closeOnUnfocus: true,
          completeOnSingleClick: false,
          container: null,
          customKeys: null,
          extraKeys: null
      };
  
      CodeMirror.defineOption("hintOptions", null);
  });