Function toggleBytecode

Lib/profiling/sampling/_heatmap_assets/heatmap.js:499–524

* Toggle bytecode panel visibility for a source line * @param {HTMLElement} button - The toggle button that was clicked

(button)

 * @param {HTMLElement} button - The toggle button that was clicked
 */
function toggleBytecode(button) {
    const lineDiv = button.closest('.code-line');
    const lineId = lineDiv.id;
    const lineNum = lineId.replace('line-', '');
    const panel = document.getElementById(`bytecode-${lineNum}`);
    const wrapper = document.getElementById(`bytecode-wrapper-${lineNum}`);

    if (!panel || !wrapper) return;

    const isExpanded = panel.classList.contains('expanded');

    if (isExpanded) {
        panel.classList.remove('expanded');
        wrapper.classList.remove('expanded');
        button.classList.remove('expanded');
        button.innerHTML = '▶';  // Right arrow
    } else {
        if (!panel.dataset.populated) {
            populateBytecodePanel(panel, button);
        }
        panel.classList.add('expanded');
        wrapper.classList.add('expanded');
        button.classList.add('expanded');
        button.innerHTML = '▼';  // Down arrow
    }
}

/**
 * Populate bytecode panel with instruction data