Function Vim

lib/web/CodeMirror/keymap/vim.js:252–5712

()

  var Pos = CodeMirror.Pos;

  var Vim = function() {
    function enterVimMode(cm) {
      cm.setOption('disableInput', true);
      cm.setOption('showCursorWhenSelecting', false);
      CodeMirror.signal(cm, "vim-mode-change", {mode: "normal"});
      cm.on('cursorActivity', onCursorActivity);
      maybeInitVimState(cm);
      CodeMirror.on(cm.getInputField(), 'paste', getOnPasteFn(cm));
    }

    function leaveVimMode(cm) {
      cm.setOption('disableInput', false);
      cm.off('cursorActivity', onCursorActivity);
      CodeMirror.off(cm.getInputField(), 'paste', getOnPasteFn(cm));
      cm.state.vim = null;
    }

    function detachVimMap(cm, next) {
      if (this == CodeMirror.keyMap.vim) {
        CodeMirror.rmClass(cm.getWrapperElement(), "cm-fat-cursor");
        if (cm.getOption("inputStyle") == "contenteditable" && document.body.style.caretColor != null) {
          disableFatCursorMark(cm);
          cm.getInputField().style.caretColor = "";
        }
      }

      if (!next || next.attach != attachVimMap)
        leaveVimMode(cm);
    }
    function attachVimMap(cm, prev) {
      if (this == CodeMirror.keyMap.vim) {
        CodeMirror.addClass(cm.getWrapperElement(), "cm-fat-cursor");
        if (cm.getOption("inputStyle") == "contenteditable" && document.body.style.caretColor != null) {
          enableFatCursorMark(cm);
          cm.getInputField().style.caretColor = "transparent";
        }
      }

      if (!prev || prev.attach != attachVimMap)
        enterVimMode(cm);
    }

    function updateFatCursorMark(cm) {
      if (!cm.state.fatCursorMarks) return;
      clearFatCursorMark(cm);
      var ranges = cm.listSelections(), result = []
      for (var i = 0; i < ranges.length; i++) {
        var range = ranges[i];
        if (range.empty()) {
          var lineLength = cm.getLine(range.anchor.line).length;
          if (range.anchor.ch < lineLength) {
            result.push(cm.markText(range.anchor, Pos(range.anchor.line, range.anchor.ch + 1),
                                    {className: "cm-fat-cursor-mark"}));
          } else {
            result.push(cm.markText(Pos(range.anchor.line, lineLength - 1),
                                    Pos(range.anchor.line, lineLength),
                                    {className: "cm-fat-cursor-mark"}));
          }