// Define match-highlighter commands. Depends on searchcursor.js // Use by attaching the following function call to the onCursorActivity event:

//myCodeMirror.matchHighlight(minChars);

// And including a special span.CodeMirror-matchhighlight css class (also optionally a separate one for .CodeMirror-focused – see demo matchhighlighter.html)

(function() {

var DEFAULT_MIN_CHARS = 2;

function MatchHighlightState() {
      this.marked = [];
}
function getMatchHighlightState(cm) {
      return cm._matchHighlightState || (cm._matchHighlightState = new MatchHighlightState());
}

function clearMarks(cm) {
      var state = getMatchHighlightState(cm);
      for (var i = 0; i < state.marked.length; ++i)
              state.marked[i].clear();
      state.marked = [];
}

function markDocument(cm, className, minChars) {
  clearMarks(cm);
      minChars = (typeof minChars !== 'undefined' ? minChars : DEFAULT_MIN_CHARS);
      if (cm.somethingSelected() && cm.getSelection().replace(/^\s+|\s+$/g, "").length >= minChars) {
              var state = getMatchHighlightState(cm);
              var query = cm.getSelection();
              cm.operation(function() {
                      if (cm.lineCount() < 2000) { // This is too expensive on big documents.
                        for (var cursor = cm.getSearchCursor(query); cursor.findNext();) {
                              //Only apply matchhighlight to the matches other than the one actually selected
                              if (!(cursor.from().line === cm.getCursor(true).line && cursor.from().ch === cm.getCursor(true).ch))
                                      state.marked.push(cm.markText(cursor.from(), cursor.to(), className));
                        }
                      }
                });
      }
}

CodeMirror.defineExtension("matchHighlight", function(className, minChars) {
  markDocument(this, className, minChars);
});

})();