Devcon 2025 headless meets pages

[lfbesada]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @lfbesada, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces substantial improvements to the headless site administration features, focusing on greater flexibility in page element and fragment configurations. It includes new utility classes and extensive modifications to DTO converters to accommodate a broader range of content types and layout options. Additionally, it incorporates several fixes and adjustments to internal processes such as asset list usage tracking, layout structure updates, and object entry validation, aiming to enhance the robustness and functionality of the platform's headless capabilities.

Highlights

• Headless Site Administration Enhancements: Expanded headless site administration capabilities by introducing new DTO converters and utility classes to support a wider array of content types and layout configurations within headless pages.
• Fragment Configuration Field Types: Significantly extended the types of fragment configuration fields supported, including categories, collections, color palettes, color pickers, general items, navigation menus, URLs, and videos.
• Layout Structure Management: Improved the internal logic for managing layout structures, specifically addressing how items are moved and re-parented within a layout to ensure consistency.
• Asset List Entry Usage Tracking: Enhanced asset list entry usage tracking by passing the user ID to the service, allowing for more granular auditing of asset interactions.
• Service Context Handling: Refined the handling of ServiceContext in layout-related listeners to ensure consistent behavior, particularly during import/staging processes and when lazy referencing is enabled.

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[gemini-code-assist]

Code Review

This pull request introduces a significant expansion of Liferay's headless page and fragment capabilities, focusing on new configuration field types and improving import/export robustness. Key changes include adding support for numerous new fragment field types (like category, collection, color, item, navigation, URL, and video), which involved substantial updates to DTO converters and importer utilities. The code has been refactored to be cleaner and more modern, for instance by removing anonymous inner classes in DTO converters. The changes also improve API robustness by returning empty collections instead of null and gracefully handling missing references. Additionally, the PR contains important bug fixes and is well-supported by extensive new integration tests. Overall, this is a high-quality contribution that greatly enhances the platform's features. I have one suggestion for code simplification.