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January 8, 20267 min readReplay: Generating UI

Replay: Generating UI Code for Aerospace Applications

R
Replay Team
Developer Advocates

TL;DR: Replay transforms screen recordings of aerospace software into working UI code, significantly accelerating development and prototyping.

The aerospace industry relies on complex and often outdated software, leading to slow development cycles and high costs. Manually recreating UI from existing applications or mockups is a time-consuming and error-prone process. What if you could simply record a video of the desired interaction and have the UI code automatically generated? Enter Replay.

The Challenge: Legacy Systems and UI Reconstruction#

Aerospace applications often involve intricate interfaces for flight control, data visualization, and simulation. These systems are frequently built on legacy technologies, making modernization a significant challenge. Reconstructing UI elements from these older systems, or even from modern design mockups, typically involves:

  • Manual inspection of existing code (if available)
  • Reverse engineering visual layouts
  • Hand-coding UI components in a modern framework
  • Extensive testing and debugging

This process is not only tedious but also prone to human error. Furthermore, it often fails to capture the behavior of the UI – how it responds to user interactions and data changes.

Introducing Replay: Behavior-Driven UI Reconstruction#

Replay offers a revolutionary approach to UI development by analyzing video recordings to generate working code. Unlike traditional screenshot-to-code tools, Replay understands the intent behind user actions, enabling it to reconstruct not just the visual appearance but also the interactive behavior of the UI.

Replay leverages advanced video analysis and AI models (powered by Gemini) to:

  • Identify UI elements and their properties
  • Recognize user interactions (e.g., clicks, drags, form inputs)
  • Infer the underlying logic and data flow
  • Generate clean, well-structured code in popular frameworks (e.g., React, Vue.js)

This "Behavior-Driven Reconstruction" approach ensures that the generated code accurately reflects the intended functionality of the UI.

Key Features for Aerospace Applications#

Replay offers several key features that are particularly valuable for aerospace UI development:

  • Multi-Page Generation: Replay can handle complex, multi-page applications, capturing the navigation flow and dependencies between different screens. This is crucial for aerospace systems with numerous interconnected modules.
  • Supabase Integration: Seamlessly integrate with Supabase for backend data storage and authentication. This allows you to quickly connect your generated UI to real-time data feeds and user management systems.
  • Style Injection: Customize the look and feel of your generated UI with CSS or styling libraries. Replay allows you to inject custom styles to match your existing design guidelines or brand identity.
  • Product Flow Maps: Visualize the user flow through your application with automatically generated product flow maps. This helps you understand how users interact with your system and identify potential areas for improvement.

Replay vs. Traditional UI Development Tools#

Let's compare Replay with traditional UI development approaches and other code generation tools:

FeatureManual CodingScreenshot-to-CodeLow-Code PlatformsReplay
Development SpeedSlowModerateModerateFast
Code QualityHigh (if skilled)VariableLimitedHigh
Behavior UnderstandingManualLimitedLimited
Video Input
Legacy System IntegrationDifficultVery DifficultLimitedEasier
CustomizationHighLimitedModerateHigh
Learning CurveHighLowModerateLow

As the table illustrates, Replay offers a unique combination of speed, code quality, and behavior understanding, making it an ideal solution for aerospace UI development.

Step-by-Step Guide: Reconstructing an Aerospace Dashboard with Replay#

Here's a practical example of how to use Replay to reconstruct an aerospace dashboard UI from a video recording.

Step 1: Record the UI Interaction#

Record a video of yourself interacting with the existing aerospace dashboard. Ensure the video clearly shows all the UI elements, user actions, and data changes. Speak clearly about the functionality you're demonstrating. For example, say "Now I'm clicking the 'Engine Status' button to view engine performance data."

📝 Note: The quality of the video recording directly impacts the accuracy of the generated code. Ensure good lighting and clear audio.

Step 2: Upload the Video to Replay#

Upload the recorded video to the Replay platform. Replay will automatically analyze the video and identify the UI elements and user interactions.

Step 3: Review and Refine the Generated Code#

Replay will generate a code preview. Review the generated code and make any necessary refinements. You can edit the code directly within the Replay interface or download it to your local development environment.

💡 Pro Tip: Use Replay's "Style Injection" feature to quickly apply your existing CSS styles to the generated UI.

Step 4: Integrate with Your Backend#

Connect the generated UI to your backend data sources using Supabase or other APIs. Replay provides clear integration points for handling data fetching and updates.

Here's an example of how to fetch data from a Supabase database and display it in the generated UI:

typescript
// Example React component fetching data from Supabase import { createClient } from '@supabase/supabase-js'; import { useState, useEffect } from 'react'; const supabaseUrl = 'YOUR_SUPABASE_URL'; const supabaseKey = 'YOUR_SUPABASE_ANON_KEY'; const supabase = createClient(supabaseUrl, supabaseKey); function EngineStatus() { const [engineData, setEngineData] = useState(null); useEffect(() => { async function fetchEngineData() { const { data, error } = await supabase .from('engine_data') .select('*') .limit(1); if (error) { console.error('Error fetching engine data:', error); } else { setEngineData(data[0]); } } fetchEngineData(); }, []); if (!engineData) { return <div>Loading engine data...</div>; } return ( <div> <h2>Engine Status</h2> <p>Temperature: {engineData.temperature}°C</p> <p>Pressure: {engineData.pressure} PSI</p> <p>RPM: {engineData.rpm}</p> </div> ); } export default EngineStatus;

This code snippet demonstrates how to use the Supabase client library to fetch engine data and display it in a React component. You can adapt this example to fetch data from other sources and display it in your generated UI.

Step 5: Deploy and Test#

Deploy the generated UI to your target environment and thoroughly test its functionality. Replay's behavior-driven reconstruction ensures that the UI behaves as expected, but it's still important to perform comprehensive testing to identify any potential issues.

Benefits of Using Replay in Aerospace#

Using Replay for aerospace UI development offers several significant benefits:

  • Accelerated Development: Replay significantly reduces the time required to reconstruct UI elements, allowing developers to focus on more complex tasks.
  • Improved Accuracy: Behavior-driven reconstruction ensures that the generated code accurately reflects the intended functionality of the UI.
  • Reduced Costs: By automating the UI reconstruction process, Replay reduces development costs and minimizes the risk of errors.
  • Enhanced Collaboration: Replay's product flow maps and code preview features facilitate collaboration between designers and developers.
  • Modernization of Legacy Systems: Replay provides a practical way to modernize legacy aerospace systems by automatically generating UI code from existing applications.

⚠️ Warning: While Replay automates much of the UI reconstruction process, it's essential to have skilled developers review and refine the generated code.

Frequently Asked Questions#

Is Replay free to use?#

Replay offers a free tier with limited features. Paid plans are available for more advanced functionality and higher usage limits. Check the Replay pricing page for details.

How is Replay different from v0.dev?#

While both Replay and v0.dev aim to generate UI code, they use fundamentally different approaches. v0.dev typically relies on text prompts and existing code libraries. Replay, on the other hand, analyzes video recordings to understand user behavior and generate code that accurately reflects the intended functionality. Replay's video-first approach makes it particularly well-suited for reconstructing UI from existing applications or design mockups.

What frameworks does Replay support?#

Replay currently supports React, Vue.js, and HTML/CSS. Support for other frameworks is planned for future releases.

Can Replay handle complex animations and transitions?#

Replay can capture and reproduce basic animations and transitions. More complex animations may require manual adjustments to the generated code.

How secure is Replay?#

Replay uses industry-standard security measures to protect your data. All video uploads and code generation processes are performed securely.


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