Function applyTextInput

lib/codemirror/lib/codemirror.js:1079–1130

(cm, inserted, deleted, sel)

  var lastCopied = null;

  function applyTextInput(cm, inserted, deleted, sel) {
    var doc = cm.doc;
    cm.display.shift = false;
    if (!sel) sel = doc.sel;

    var textLines = splitLines(inserted), multiPaste = null;
    // When pasing N lines into N selections, insert one line per selection
    if (cm.state.pasteIncoming && sel.ranges.length > 1) {
      if (lastCopied && lastCopied.join("\n") == inserted)
        multiPaste = sel.ranges.length % lastCopied.length == 0 && map(lastCopied, splitLines);
      else if (textLines.length == sel.ranges.length)
        multiPaste = map(textLines, function(l) { return [l]; });
    }

    // Normal behavior is to insert the new text into every selection
    for (var i = sel.ranges.length - 1; i >= 0; i--) {
      var range = sel.ranges[i];
      var from = range.from(), to = range.to();
      if (range.empty()) {
        if (deleted && deleted > 0) // Handle deletion
          from = Pos(from.line, from.ch - deleted);
        else if (cm.state.overwrite && !cm.state.pasteIncoming) // Handle overwrite
          to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length));
      }
      var updateInput = cm.curOp.updateInput;
      var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i % multiPaste.length] : textLines,
                         origin: cm.state.pasteIncoming ? "paste" : cm.state.cutIncoming ? "cut" : "+input"};
      makeChange(cm.doc, changeEvent);
      signalLater(cm, "inputRead", cm, changeEvent);
      // When an 'electric' character is inserted, immediately trigger a reindent
      if (inserted && !cm.state.pasteIncoming && cm.options.electricChars &&
          cm.options.smartIndent && range.head.ch < 100 &&
          (!i || sel.ranges[i - 1].head.line != range.head.line)) {
        var mode = cm.getModeAt(range.head);
        var end = changeEnd(changeEvent);
        if (mode.electricChars) {
          for (var j = 0; j < mode.electricChars.length; j++)
            if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {
              indentLine(cm, end.line, "smart");
              break;
            }
        } else if (mode.electricInput) {
          if (mode.electricInput.test(getLine(doc, end.line).text.slice(0, end.ch)))
            indentLine(cm, end.line, "smart");
        }
      }
    }
    ensureCursorVisible(cm);
    cm.curOp.updateInput = updateInput;
    cm.curOp.typing = true;
    cm.state.pasteIncoming = cm.state.cutIncoming = false;
  }

  function copyableRanges(cm) {
    var text = [], ranges = [];