/** * Resizable Panels for MoEngage API Documentation * Adds a draggable resize handle between request and response code panels */ (function() { 'use strict'; const CONFIG = { minPanelHeight: 80, debounceDelay: 100, initDelay: 300 }; const initializedContainers = new WeakSet(); let observerTimeout = null; function createDragHandle() { const handle = document.createElement('div'); handle.className = 'moe-resize-handle'; handle.innerHTML = '

'; handle.setAttribute('role', 'separator'); handle.setAttribute('aria-orientation', 'horizontal'); handle.setAttribute('aria-label', 'Drag to resize panels'); handle.setAttribute('tabindex', '0'); return handle; } // Get the actual content height of a panel function getContentHeight(panel) { // Try to find the code content inside const pre = panel.querySelector('pre'); const codeRegion = panel.querySelector('[role="region"]'); const codeBlock = panel.querySelector('[class*="codeblock"]'); // Get the scrollHeight of the content element let contentHeight = 0; if (pre) { contentHeight = pre.scrollHeight; } else if (codeRegion) { contentHeight = codeRegion.scrollHeight; } else if (codeBlock) { contentHeight = codeBlock.scrollHeight; } // Add padding for headers, tabs, etc. (approximately 80px) // Also account for the panel's own padding const headerHeight = 80; // Return at least the current height or the content height return Math.max(contentHeight + headerHeight, panel.scrollHeight, CONFIG.minPanelHeight); } function initializeResizer(topPanel, bottomPanel, handle) { let isResizing = false; let startY = 0; let startTopHeight = 0; let startBottomHeight = 0; let maxTopHeight = 0; let maxBottomHeight = 0; const startResize = (e) => { isResizing = true; startY = e.clientY || (e.touches && e.touches[0].clientY); startTopHeight = topPanel.getBoundingClientRect().height; startBottomHeight = bottomPanel.getBoundingClientRect().height; // Calculate maximum heights based on content // This prevents expanding beyond content (which causes grey area) maxTopHeight = getContentHeight(topPanel); maxBottomHeight = getContentHeight(bottomPanel); document.body.classList.add('moe-resizing'); handle.classList.add('moe-resize-handle--active'); e.preventDefault(); e.stopPropagation(); }; const doResize = (e) => { if (!isResizing) return; const currentY = e.clientY || (e.touches && e.touches[0].clientY); const deltaY = currentY - startY; let newTopHeight = startTopHeight + deltaY; let newBottomHeight = startBottomHeight - deltaY; const totalHeight = startTopHeight + startBottomHeight; // Enforce MINIMUM heights if (newTopHeight < CONFIG.minPanelHeight) { newTopHeight = CONFIG.minPanelHeight; newBottomHeight = totalHeight - CONFIG.minPanelHeight; } if (newBottomHeight < CONFIG.minPanelHeight) { newBottomHeight = CONFIG.minPanelHeight; newTopHeight = totalHeight - CONFIG.minPanelHeight; } // Enforce MAXIMUM heights (prevent grey area) // Only cap if expanding beyond content if (newTopHeight > maxTopHeight && deltaY > 0) { newTopHeight = maxTopHeight; newBottomHeight = totalHeight - maxTopHeight; } if (newBottomHeight > maxBottomHeight && deltaY < 0) { newBottomHeight = maxBottomHeight; newTopHeight = totalHeight - maxBottomHeight; } // Make sure we don't go below minimum after max capping if (newBottomHeight < CONFIG.minPanelHeight) { newBottomHeight = CONFIG.minPanelHeight; newTopHeight = totalHeight - CONFIG.minPanelHeight; } if (newTopHeight < CONFIG.minPanelHeight) { newTopHeight = CONFIG.minPanelHeight; newBottomHeight = totalHeight - CONFIG.minPanelHeight; } topPanel.style.height = `${newTopHeight}px`; topPanel.style.maxHeight = `${newTopHeight}px`; topPanel.style.overflow = 'auto'; bottomPanel.style.height = `${newBottomHeight}px`; bottomPanel.style.maxHeight = `${newBottomHeight}px`; bottomPanel.style.overflow = 'auto'; }; const stopResize = () => { if (!isResizing) return; isResizing = false; document.body.classList.remove('moe-resizing'); handle.classList.remove('moe-resize-handle--active'); }; handle.addEventListener('mousedown', startResize); document.addEventListener('mousemove', doResize); document.addEventListener('mouseup', stopResize); handle.addEventListener('touchstart', startResize, { passive: false }); document.addEventListener('touchmove', doResize, { passive: false }); document.addEventListener('touchend', stopResize); handle.addEventListener('keydown', (e) => { const step = 30; let topHeight = topPanel.getBoundingClientRect().height; let bottomHeight = bottomPanel.getBoundingClientRect().height; // Recalculate max heights const currentMaxTop = getContentHeight(topPanel); const currentMaxBottom = getContentHeight(bottomPanel); if (e.key === 'ArrowUp' && topHeight > CONFIG.minPanelHeight + step) { e.preventDefault(); topPanel.style.height = `${topHeight - step}px`; topPanel.style.maxHeight = `${topHeight - step}px`; const newBottomHeight = Math.min(bottomHeight + step, currentMaxBottom); bottomPanel.style.height = `${newBottomHeight}px`; bottomPanel.style.maxHeight = `${newBottomHeight}px`; } else if (e.key === 'ArrowDown' && bottomHeight > CONFIG.minPanelHeight + step) { e.preventDefault(); const newTopHeight = Math.min(topHeight + step, currentMaxTop); topPanel.style.height = `${newTopHeight}px`; topPanel.style.maxHeight = `${newTopHeight}px`; bottomPanel.style.height = `${bottomHeight - step}px`; bottomPanel.style.maxHeight = `${bottomHeight - step}px`; } }); handle.addEventListener('dblclick', () => { topPanel.style.height = ''; topPanel.style.maxHeight = ''; topPanel.style.overflow = ''; bottomPanel.style.height = ''; bottomPanel.style.maxHeight = ''; bottomPanel.style.overflow = ''; }); } function setupResizablePanels() { const sideLayout = document.getElementById('content-side-layout'); if (!sideLayout) return; if (sideLayout.querySelector('.moe-resize-handle')) return; const codeGroups = sideLayout.querySelectorAll('.code-group'); const codeRegions = sideLayout.querySelectorAll('[role="region"][aria-label*="Code"]'); let panels = codeGroups.length >= 2 ? Array.from(codeGroups) : Array.from(codeRegions); if (panels.length < 2) { const allDivs = sideLayout.querySelectorAll(':scope > div > div'); panels = Array.from(allDivs).filter(div => div.querySelector('pre') || div.querySelector('code') || div.classList.contains('code-group') || div.getAttribute('role') === 'region' ); } if (panels.length < 2) return; const topPanel = panels[0]; const bottomPanel = panels[1]; if (initializedContainers.has(topPanel)) return; let commonParent = topPanel.parentElement; while (commonParent && !commonParent.contains(bottomPanel)) { commonParent = commonParent.parentElement; } const handle = createDragHandle(); if (topPanel.nextElementSibling === bottomPanel) { topPanel.after(handle); initializeResizer(topPanel, bottomPanel, handle); } else { let topWrapper = topPanel; while (topWrapper.parentElement !== commonParent && topWrapper.parentElement) { topWrapper = topWrapper.parentElement; } let bottomWrapper = bottomPanel; while (bottomWrapper.parentElement !== commonParent && bottomWrapper.parentElement) { bottomWrapper = bottomWrapper.parentElement; } if (topWrapper !== bottomWrapper) { topWrapper.after(handle); initializeResizer(topWrapper, bottomWrapper, handle); } } initializedContainers.add(topPanel); } function setupByPosition() { const sideLayout = document.getElementById('content-side-layout'); if (!sideLayout) return; if (sideLayout.querySelector('.moe-resize-handle')) return; const children = Array.from(sideLayout.children); const codePanels = children.filter(child => { const rect = child.getBoundingClientRect(); const hasCode = child.querySelector('pre, code, .code-group, [role="region"]'); return rect.height > 50 && hasCode; }); if (codePanels.length >= 2) { const topPanel = codePanels[0]; const bottomPanel = codePanels[1]; if (initializedContainers.has(topPanel)) return; const handle = createDragHandle(); topPanel.after(handle); initializeResizer(topPanel, bottomPanel, handle); initializedContainers.add(topPanel); } } function trySetup() { setupResizablePanels(); setupByPosition(); } // Reset panel sizes (used when zoom changes) function resetPanelSizes() { const sideLayout = document.getElementById('content-side-layout'); if (!sideLayout) return; // Find all panels that have been resized (have inline height style) const resizedPanels = sideLayout.querySelectorAll('[style*="height"]'); resizedPanels.forEach(panel => { panel.style.height = ''; panel.style.maxHeight = ''; panel.style.overflow = ''; }); } function init() { trySetup(); setTimeout(trySetup, CONFIG.initDelay); const observer = new MutationObserver(() => { if (observerTimeout) clearTimeout(observerTimeout); observerTimeout = setTimeout(trySetup, CONFIG.debounceDelay); }); observer.observe(document.body, { childList: true, subtree: true }); ['popstate', 'hashchange'].forEach(event => { window.addEventListener(event, () => setTimeout(trySetup, 200)); }); // Reset panels on window resize (includes zoom changes) let resizeTimeout; window.addEventListener('resize', () => { clearTimeout(resizeTimeout); resizeTimeout = setTimeout(() => { resetPanelSizes(); }, 150); }); } if (document.readyState === 'loading') { document.addEventListener('DOMContentLoaded', init); } else { init(); } window.addEventListener('load', () => setTimeout(trySetup, 500)); })();

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Solution