{% macro js_import_general_functions() %}
 function addResizer(div){
     // Query the table
     const table = document.getElementById(div);

    // Query all headers
     const cols = table.querySelectorAll('th');

     // Loop over them
     [].forEach.call(cols, function (col) {
         // Create a resizer element
         const resizer = document.createElement('div');
         resizer.classList.add('resizer');

         // Set the height
         resizer.style.height = `${table.offsetHeight}px`;

         // Add a resizer element to the column
         col.appendChild(resizer);

         // Will be implemented in the next section
         createResizableColumn(col, resizer);
     });
 }

const createResizableColumn = function (col, resizer) {
    // Track the current position of mouse
    let x = 0;
    let w = 0;

    const mouseDownHandler = function (e) {
        // Get the current mouse position
        x = e.clientX;

        // Calculate the current width of column
        const styles = window.getComputedStyle(col);
        w = parseInt(styles.width, 10);

        // Attach listeners for document's events
        document.addEventListener('mousemove', mouseMoveHandler);
        document.addEventListener('mouseup', mouseUpHandler);
        resizer.classList.add('resizing');
    };

    const mouseMoveHandler = function (e) {
        // Determine how far the mouse has been moved
        const dx = e.clientX - x;

        // Update the width of column
        col.style.width = `${w + dx}px`;
        resizer.classList.add('resizing');
    };

    // When user releases the mouse, remove the existing event listeners
    const mouseUpHandler = function () {
        document.removeEventListener('mousemove', mouseMoveHandler);
        document.removeEventListener('mouseup', mouseUpHandler);
        resizer.classList.remove('resizing');
    };

    resizer.addEventListener('mousedown', mouseDownHandler);
};

{% endmacro %}