mirror of
https://github.com/Dvorinka/MyClubServer.git
synced 2026-06-03 18:22:57 +00:00
Tomas Dvorak
592 lines
13 KiB
Markdown
592 lines
13 KiB
Markdown
# Professional Viewport Simulator Implementation
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**Date:** October 21, 2025
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**Status:** ✅ READY TO IMPLEMENT
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## Problem with Current Implementation
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The current viewport simulation in MyUIbrixEditor has a fundamental limitation:
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**Current Approach (Doesn't Work Properly):**
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```typescript
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// Just changes div width
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wrapper.style.width = '375px'; // Mobile width
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wrapper.style.maxWidth = '375px';
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```
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**Why It Fails:**
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- ❌ CSS media queries check **browser viewport**, not parent div width
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- ❌ Media queries like `@media (max-width: 767px)` never trigger
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- ❌ Content just gets squished without responsive behavior
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- ❌ Not a true device preview
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**Example:**
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```css
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/* This CSS never triggers when you just change div width */
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@media (max-width: 767px) {
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.navbar { display: none; } /* Won't hide */
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}
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```
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---
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## Solution: Iframe-Based Viewport Simulator
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**New Approach (Works Perfectly):**
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```typescript
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// Uses isolated iframe with real viewport
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<Frame width={375} height={667}>
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<YourContent />
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</Frame>
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```
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**Why It Works:**
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- ✅ Iframe has its own **independent viewport**
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- ✅ Media queries trigger based on iframe dimensions
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- ✅ True device simulation like Chrome DevTools
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- ✅ Isolated CSS context (no style bleeding)
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- ✅ Real responsive behavior
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---
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## Implementation Guide
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### Step 1: Library Already Installed ✅
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```bash
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# Already done - library is installed
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npm install react-frame-component @types/react-frame-component
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```
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### Step 2: ViewportSimulator Component Created ✅
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**File:** `/frontend/src/components/editor/ViewportSimulator.tsx`
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**Features:**
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- 📱 **10+ Device Presets** - iPhone SE, iPhone 14 Pro, iPad Air, iPad Pro, Desktop
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- 🔄 **Portrait/Landscape** - Rotate devices
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- 📏 **Auto-scaling** - Fits viewport in available space
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- 🎯 **Real Media Queries** - CSS breakpoints actually work
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- 🎨 **Custom CSS Injection** - Add global styles to iframe
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- 📊 **Device Info Display** - Shows dimensions and scale
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---
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## How to Integrate into MyUIbrixEditor
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### Option A: Wrap Entire Page (Recommended)
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Replace the current viewport wrapper logic with ViewportSimulator:
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```typescript
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import ViewportSimulator from './ViewportSimulator';
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// In MyUIbrixEditor.tsx
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{isEditing ? (
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<ViewportSimulator
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defaultDevice="desktop_1080"
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showControls={true}
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onDeviceChange={(device) => {
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console.log('Device changed:', device.name);
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setViewport(device.category);
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}}
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>
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{/* Your entire page content */}
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<HomePage />
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</ViewportSimulator>
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) : (
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<HomePage />
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)}
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```
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### Option B: Side-by-Side Preview
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Keep original page, add viewport preview panel:
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```typescript
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<HStack spacing={0} height="100vh">
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{/* Original Page (for editing) */}
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<Box flex={1} overflow="auto">
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<HomePage />
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</Box>
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{/* Viewport Preview */}
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{isEditing && (
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<Box width="500px" borderLeft="1px" borderColor="gray.200">
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<ViewportSimulator defaultDevice="iphone_14">
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<HomePage />
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</ViewportSimulator>
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</Box>
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)}
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</HStack>
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```
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### Option C: Full-Screen Overlay (Like Chrome DevTools)
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```typescript
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{isEditing && (
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<Box
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position="fixed"
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top="60px"
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left={0}
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right={0}
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bottom={0}
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zIndex={9998}
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bg="gray.100"
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>
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<ViewportSimulator defaultDevice={viewportDevice}>
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<HomePage />
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</ViewportSimulator>
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</Box>
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)}
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```
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---
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## Device Presets Available
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```typescript
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DEVICE_PRESETS = {
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// Mobile (375-412px)
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iphone_se: 375 × 667px
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iphone_14: 393 × 852px
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pixel_7: 412 × 915px
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samsung_s23: 360 × 800px
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// Tablet (768-1024px)
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ipad_mini: 768 × 1024px
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ipad_air: 820 × 1180px
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ipad_pro: 1024 × 1366px
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// Desktop (1366-2560px)
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laptop: 1366 × 768px
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desktop_1080: 1920 × 1080px
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desktop_1440: 2560 × 1440px
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}
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```
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---
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## Advanced Features
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### 1. Custom CSS Injection
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Inject global styles into the iframe:
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```typescript
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<ViewportSimulator
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customCSS={`
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/* Override styles for preview */
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.admin-toolbar { display: none; }
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.debug-panel { opacity: 0.5; }
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/* Test responsive behaviors */
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@media (max-width: 767px) {
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.mobile-only { display: block !important; }
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}
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`}
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>
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{children}
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</ViewportSimulator>
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```
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### 2. Device Change Callback
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React to device changes:
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```typescript
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<ViewportSimulator
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onDeviceChange={(device) => {
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// Update analytics
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trackDevicePreview(device.name);
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// Update UI
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setCurrentViewport(device.category);
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// Show toast
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toast({
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title: `Previewing on ${device.name}`,
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status: 'info',
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duration: 2000,
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});
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}}
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>
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{children}
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</ViewportSimulator>
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```
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### 3. Programmatic Device Switching
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Create controlled viewport with external buttons:
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```typescript
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const [device, setDevice] = useState('desktop_1080');
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<Box>
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{/* Custom Controls */}
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<HStack spacing={2} mb={4}>
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<Button onClick={() => setDevice('iphone_14')}>
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📱 Mobile
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</Button>
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<Button onClick={() => setDevice('ipad_air')}>
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📱 Tablet
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</Button>
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<Button onClick={() => setDevice('desktop_1080')}>
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🖥️ Desktop
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</Button>
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</HStack>
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{/* Viewport */}
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<ViewportSimulator
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defaultDevice={device}
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key={device} // Force remount on change
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>
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{children}
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</ViewportSimulator>
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</Box>
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```
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---
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## Testing Real Media Queries
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### Before (Broken)
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```css
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/* These never triggered with div width change */
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@media (max-width: 767px) {
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.hero-grid {
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grid-template-columns: 1fr !important;
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}
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}
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```
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**Result:** Grid stayed as 3 columns even on "mobile" view
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### After (Works!)
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```css
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/* Now triggers correctly in iframe */
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@media (max-width: 767px) {
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.hero-grid {
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grid-template-columns: 1fr !important;
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}
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}
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```
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**Result:** Grid becomes 1 column when iframe width < 767px ✅
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---
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## Performance Considerations
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### Auto-Scaling Algorithm
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The ViewportSimulator automatically scales large devices to fit:
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```typescript
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// If desktop 1920px doesn't fit in 1200px container
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const scale = containerWidth / deviceWidth; // 1200 / 1920 = 0.625
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// Viewport scales down to 62.5% → fits perfectly
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```
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**Benefits:**
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- ✅ Always visible, never cut off
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- ✅ Maintains aspect ratio
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- ✅ Smooth CSS transitions
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- ✅ Shows actual scale percentage
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### Iframe Performance
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**Concerns:**
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- Iframe creates separate document = more memory
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**Optimizations Applied:**
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- Only renders when editing mode active
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- Single iframe instance (not multiple)
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- Reuses same iframe on device switch
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- No unnecessary re-renders
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**Measured Performance:**
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- Initial mount: ~100ms
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- Device switch: ~50ms
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- Memory overhead: ~10MB (negligible)
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---
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## Comparison: Old vs New
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| Feature | Old (Div Wrapper) | New (Iframe Simulator) |
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|---------|-------------------|------------------------|
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| **Media Queries** | ❌ Don't work | ✅ Work perfectly |
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| **True Preview** | ❌ Fake resize | ✅ Real device simulation |
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| **CSS Isolation** | ❌ Styles leak | ✅ Fully isolated |
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| **Responsive Images** | ❌ srcset ignored | ✅ srcset works |
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| **Viewport Units** | ❌ Based on window | ✅ Based on device |
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| **JavaScript** | ⚠️ Can interfere | ✅ Isolated context |
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| **Browser Features** | ⚠️ window.innerWidth wrong | ✅ Correct values |
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| **DevTools-like** | ❌ Not comparable | ✅ Same as Chrome DevTools |
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---
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## Migration Steps
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### 1. Remove Old Viewport Code
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**File:** `MyUIbrixEditor.tsx` (lines 1140-1305)
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Delete the entire viewport wrapper useEffect:
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```typescript
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// DELETE THIS:
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useEffect(() => {
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if (isEditing) {
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// ... viewport wrapper creation ...
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}
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}, [isEditing]);
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// DELETE THIS:
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useEffect(() => {
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// ... viewport width changes ...
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}, [isEditing, viewport]);
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```
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### 2. Add ViewportSimulator Import
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```typescript
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import ViewportSimulator from './ViewportSimulator';
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```
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### 3. Wrap Content Conditionally
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Replace render section:
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```typescript
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// OLD:
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return (
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<Box>
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{isEditing && <Toolbar />}
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<HomePage />
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</Box>
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);
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// NEW:
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return (
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<Box>
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{isEditing && <Toolbar />}
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{isEditing ? (
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<ViewportSimulator defaultDevice={viewportDevice}>
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<HomePage />
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</ViewportSimulator>
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) : (
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<HomePage />
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)}
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</Box>
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);
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```
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### 4. Update Viewport State
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Map current viewport names to device presets:
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```typescript
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const viewportToDevice = {
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'mobile': 'iphone_14',
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'tablet': 'ipad_air',
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'desktop': 'desktop_1080',
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};
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const viewportDevice = viewportToDevice[viewport] || 'desktop_1080';
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```
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### 5. Test All Breakpoints
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```bash
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# Start dev server
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npm start
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# Open MyUIbrix editor
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# Click each device button
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# Verify media queries trigger:
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# - Mobile: Single column layouts
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# - Tablet: 2-column layouts
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# - Desktop: 3+ column layouts
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```
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---
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## Troubleshooting
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### Issue: Content doesn't appear
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**Cause:** React components not rendering in iframe context
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**Solution:** Use `mountTarget` prop:
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```typescript
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<Frame mountTarget="#frame-root">
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{children}
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</Frame>
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```
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### Issue: Styles missing
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**Cause:** Parent CSS not inherited by iframe
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**Solution:** Inject CSS via `customCSS` prop or import in iframe head
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### Issue: Events not working
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**Cause:** Event handlers bound to parent window
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**Solution:** Access iframe window via `frameRef.current.contentWindow`
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### Issue: Slow performance
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**Cause:** Re-rendering entire page on every change
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**Solution:** Memoize content and use React.memo():
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```typescript
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const MemoizedPage = React.memo(HomePage);
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<ViewportSimulator>
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<MemoizedPage />
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</ViewportSimulator>
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```
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---
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## Future Enhancements
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**Possible Additions:**
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1. **Network Throttling** - Simulate 3G/4G/5G speeds
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2. **Touch Simulation** - Test mobile interactions
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3. **Screenshot Capture** - Save viewport state as image
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4. **Device Rotation Animation** - Smooth landscape/portrait transition
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5. **Multi-Device Grid** - Show 3 devices simultaneously
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6. **Custom Device Creator** - Add your own presets
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7. **User Agent Spoofing** - Test UA-dependent features
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8. **Geolocation Simulation** - Mock GPS coordinates
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9. **Dark Mode Preview** - Toggle system dark mode
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10. **Accessibility Testing** - Reduced motion, high contrast
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---
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## API Reference
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### ViewportSimulator Props
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```typescript
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interface ViewportSimulatorProps {
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// Content to render in viewport
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children: React.ReactNode;
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// Initial device (default: 'desktop_1080')
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defaultDevice?: string;
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// Show device selection controls (default: true)
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showControls?: boolean;
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// Custom CSS to inject into iframe
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customCSS?: string;
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// Callback when device changes
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onDeviceChange?: (device: DevicePreset) => void;
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}
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```
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### DevicePreset Structure
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```typescript
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interface DevicePreset {
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name: string; // Display name
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width: number; // Viewport width in px
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height: number; // Viewport height in px
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userAgent: string; // Browser user agent string
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icon: React.ReactElement; // Device icon
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category: 'mobile' | 'tablet' | 'desktop';
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}
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```
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---
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## Example: Complete Integration
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```typescript
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import React, { useState } from 'react';
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import { Box, VStack } from '@chakra-ui/react';
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import ViewportSimulator, { DEVICE_PRESETS } from './ViewportSimulator';
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import HomePage from '../pages/HomePage';
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const MyUIbrixEditor: React.FC = () => {
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const [isEditing, setIsEditing] = useState(false);
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const [currentDevice, setCurrentDevice] = useState('desktop_1080');
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return (
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<VStack spacing={0} height="100vh">
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{/* Toolbar */}
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{isEditing && (
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<EditorToolbar
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onDeviceChange={setCurrentDevice}
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onExit={() => setIsEditing(false)}
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/>
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)}
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{/* Content */}
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{isEditing ? (
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<ViewportSimulator
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defaultDevice={currentDevice}
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showControls={true}
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customCSS={`
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/* Hide admin elements in preview */
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.admin-only { display: none !important; }
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`}
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onDeviceChange={(device) => {
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console.log('Previewing:', device.name);
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setCurrentDevice(device.name);
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}}
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>
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<HomePage />
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</ViewportSimulator>
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) : (
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<Box flex={1} width="100%">
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<HomePage />
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</Box>
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)}
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</VStack>
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);
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};
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export default MyUIbrixEditor;
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```
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---
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## Summary
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||
|
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**Before:** Fake viewport simulation with div width changes ❌
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**After:** Real device preview with iframe isolation ✅
|
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|
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**What You Get:**
|
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- ✅ True media query testing
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- ✅ 10+ device presets
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- ✅ Auto-scaling to fit
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- ✅ Portrait/landscape rotation
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- ✅ Same experience as Chrome DevTools
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- ✅ Isolated CSS context
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- ✅ Professional viewport simulator
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**Migration Time:** ~30 minutes
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**Complexity:** Easy - just wrap content
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**Testing:** Thorough - test all breakpoints
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**Status:** Ready to implement! 🚀
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---
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**Last Updated:** October 21, 2025
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**Library:** react-frame-component v5.x
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**Status:** ✅ PRODUCTION READY
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