Codemirror custom Keyboard Shortcuts / JetBrains keymap

CodeMirror-extra-shortcuts.js

// CodeMirror API - https://codemirror.net


/** Duplicate a current line in CodeMirror doc */
function cmDuplicateLine(cm) {
    // get a position of a current cursor in a current cell
    var currentCursor = cm.doc.getCursor();

    // read a content from a line where is the current cursor
    var lineContent = cm.doc.getLine(currentCursor.line);

    // go to the end the current line
    CodeMirror.commands.goLineEnd(cm);

    // make a break for a new line
    CodeMirror.commands.newlineAndIndent(cm);

    // move caret to the left position
    CodeMirror.commands.goLineStart(cm);

    // filled a content of the new line content from line above it
    cm.doc.replaceSelection(lineContent);

    // restore position cursor on the new line
    cm.doc.setCursor(currentCursor.line + 1, currentCursor.ch);
}


CodeMirror.keyMap.pcDefault["Ctrl-D"] = cmDuplicateLine;

CodeMirror.keyMap.pcDefault["Ctrl-Y"] = CodeMirror.commands.deleteLine;