tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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active-line.js (2562B)

      1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
      2 // Distributed under an MIT license: https://codemirror.net/LICENSE
      3 
      4 (function(mod) {
      5  if (typeof exports == "object" && typeof module == "object") // CommonJS
      6    mod(require("resource://devtools/client/shared/sourceeditor/codemirror/lib/codemirror.js"));
      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  var WRAP_CLASS = "CodeMirror-activeline";
     14  var BACK_CLASS = "CodeMirror-activeline-background";
     15  var GUTT_CLASS = "CodeMirror-activeline-gutter";
     16 
     17  CodeMirror.defineOption("styleActiveLine", false, function(cm, val, old) {
     18    var prev = old == CodeMirror.Init ? false : old;
     19    if (val == prev) return
     20    if (prev) {
     21      cm.off("beforeSelectionChange", selectionChange);
     22      clearActiveLines(cm);
     23      delete cm.state.activeLines;
     24    }
     25    if (val) {
     26      cm.state.activeLines = [];
     27      updateActiveLines(cm, cm.listSelections());
     28      cm.on("beforeSelectionChange", selectionChange);
     29    }
     30  });
     31 
     32  function clearActiveLines(cm) {
     33    for (var i = 0; i < cm.state.activeLines.length; i++) {
     34      cm.removeLineClass(cm.state.activeLines[i], "wrap", WRAP_CLASS);
     35      cm.removeLineClass(cm.state.activeLines[i], "background", BACK_CLASS);
     36      cm.removeLineClass(cm.state.activeLines[i], "gutter", GUTT_CLASS);
     37    }
     38  }
     39 
     40  function sameArray(a, b) {
     41    if (a.length != b.length) return false;
     42    for (var i = 0; i < a.length; i++)
     43      if (a[i] != b[i]) return false;
     44    return true;
     45  }
     46 
     47  function updateActiveLines(cm, ranges) {
     48    var active = [];
     49    for (var i = 0; i < ranges.length; i++) {
     50      var range = ranges[i];
     51      var option = cm.getOption("styleActiveLine");
     52      if (typeof option == "object" && option.nonEmpty ? range.anchor.line != range.head.line : !range.empty())
     53        continue
     54      var line = cm.getLineHandleVisualStart(range.head.line);
     55      if (active[active.length - 1] != line) active.push(line);
     56    }
     57    if (sameArray(cm.state.activeLines, active)) return;
     58    cm.operation(function() {
     59      clearActiveLines(cm);
     60      for (var i = 0; i < active.length; i++) {
     61        cm.addLineClass(active[i], "wrap", WRAP_CLASS);
     62        cm.addLineClass(active[i], "background", BACK_CLASS);
     63        cm.addLineClass(active[i], "gutter", GUTT_CLASS);
     64      }
     65      cm.state.activeLines = active;
     66    });
     67  }
     68 
     69  function selectionChange(cm, sel) {
     70    updateActiveLines(cm, sel.ranges);
     71  }
     72 });