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   1  // CodeMirror, copyright (c) by Marijn Haverbeke and others
   2  // Distributed under an MIT license: https://codemirror.net/5/LICENSE
   3  
   4  (function(mod) {
   5    if (typeof exports == "object" && typeof module == "object") // CommonJS
   6      mod(require("../../lib/codemirror"), require("../../mode/css/css"));
   7    else if (typeof define == "function" && define.amd) // AMD
   8      define(["../../lib/codemirror", "../../mode/css/css"], mod);
   9    else // Plain browser env
  10      mod(CodeMirror);
  11  })(function(CodeMirror) {
  12    "use strict";
  13  
  14    var pseudoClasses = {"active":1, "after":1, "before":1, "checked":1, "default":1,
  15      "disabled":1, "empty":1, "enabled":1, "first-child":1, "first-letter":1,
  16      "first-line":1, "first-of-type":1, "focus":1, "hover":1, "in-range":1,
  17      "indeterminate":1, "invalid":1, "lang":1, "last-child":1, "last-of-type":1,
  18      "link":1, "not":1, "nth-child":1, "nth-last-child":1, "nth-last-of-type":1,
  19      "nth-of-type":1, "only-of-type":1, "only-child":1, "optional":1, "out-of-range":1,
  20      "placeholder":1, "read-only":1, "read-write":1, "required":1, "root":1,
  21      "selection":1, "target":1, "valid":1, "visited":1
  22    };
  23  
  24    CodeMirror.registerHelper("hint", "css", function(cm) {
  25      var cur = cm.getCursor(), token = cm.getTokenAt(cur);
  26      var inner = CodeMirror.innerMode(cm.getMode(), token.state);
  27      if (inner.mode.name != "css") return;
  28  
  29      if (token.type == "keyword" && "!important".indexOf(token.string) == 0)
  30        return {list: ["!important"], from: CodeMirror.Pos(cur.line, token.start),
  31                to: CodeMirror.Pos(cur.line, token.end)};
  32  
  33      var start = token.start, end = cur.ch, word = token.string.slice(0, end - start);
  34      if (/[^\w$_-]/.test(word)) {
  35        word = ""; start = end = cur.ch;
  36      }
  37  
  38      var spec = CodeMirror.resolveMode("text/css");
  39  
  40      var result = [];
  41      function add(keywords) {
  42        for (var name in keywords)
  43          if (!word || name.lastIndexOf(word, 0) == 0)
  44            result.push(name);
  45      }
  46  
  47      var st = inner.state.state;
  48      if (st == "pseudo" || token.type == "variable-3") {
  49        add(pseudoClasses);
  50      } else if (st == "block" || st == "maybeprop") {
  51        add(spec.propertyKeywords);
  52      } else if (st == "prop" || st == "parens" || st == "at" || st == "params") {
  53        add(spec.valueKeywords);
  54        add(spec.colorKeywords);
  55      } else if (st == "media" || st == "media_parens") {
  56        add(spec.mediaTypes);
  57        add(spec.mediaFeatures);
  58      }
  59  
  60      if (result.length) return {
  61        list: result,
  62        from: CodeMirror.Pos(cur.line, start),
  63        to: CodeMirror.Pos(cur.line, end)
  64      };
  65    });
  66  });