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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"));
   7    else if (typeof define == "function" && define.amd) // AMD
   8      define(["../../lib/codemirror"], mod);
   9    else // Plain browser env
  10      mod(CodeMirror);
  11  })(function(CodeMirror) {
  12    "use strict";
  13  
  14    CodeMirror.defineOption("fullScreen", false, function(cm, val, old) {
  15      if (old == CodeMirror.Init) old = false;
  16      if (!old == !val) return;
  17      if (val) setFullscreen(cm);
  18      else setNormal(cm);
  19    });
  20  
  21    function setFullscreen(cm) {
  22      var wrap = cm.getWrapperElement();
  23      cm.state.fullScreenRestore = {scrollTop: window.pageYOffset, scrollLeft: window.pageXOffset,
  24                                    width: wrap.style.width, height: wrap.style.height};
  25      wrap.style.width = "";
  26      wrap.style.height = "auto";
  27      wrap.className += " CodeMirror-fullscreen";
  28      document.documentElement.style.overflow = "hidden";
  29      cm.refresh();
  30    }
  31  
  32    function setNormal(cm) {
  33      var wrap = cm.getWrapperElement();
  34      wrap.className = wrap.className.replace(/\s*CodeMirror-fullscreen\b/, "");
  35      document.documentElement.style.overflow = "";
  36      var info = cm.state.fullScreenRestore;
  37      wrap.style.width = info.width; wrap.style.height = info.height;
  38      window.scrollTo(info.scrollLeft, info.scrollTop);
  39      cm.refresh();
  40    }
  41  });