let isSelect = false;
let move = false;


document.addEventListener('mousedown', () => {
    isSelect = true;
});

document.addEventListener('mousemove', () => {
    if (isSelect) {

        move = true;
    }
});

document.addEventListener('mouseup', (e) => {
    isSelect = false;
    if (move) {
        const selection = window.getSelection();
        if (selection && selection.toString().length != 0) {
            parent.window.selectChange(e)
        }
    }
    move = false;
});