Enhance content management dropdown fetching performance #45
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- Replace restartable() transformer with droppable() for search events - Remove unnecessary line breaks in constructor initializers - Simplify filter conditions in repository calls - Merge language list update into a single line
- Add 'countriesIsLoadingMore' field to CreateHeadlineState - Update copyWith method to include new field - Modify state initialization to set default value for 'countriesIsLoadingMore'
…e requests - Add countriesIsLoadingMore flag to state - Check countriesIsLoadingMore before making new load more request - Update state with countriesIsLoadingMore: true at the start of the request - Reset countriesIsLoadingMore to false in both success and error cases
…e requests - Add countriesIsLoadingMore flag to state - Check countriesIsLoadingMore before making new load more request - Update loading state in both success and error cases
- Add 'countriesIsLoadingMore' field to EditHeadlineState - Update constructor and copyWith method to include new field - Modify Equatable props to include 'countriesIsLoadingMore'
…nd languages - Add countriesIsLoadingMore and languagesIsLoadingMore fields to CreateSourceState - Update constructor, copyWith method, and properties list to include new loading indicators - This change supports infinite scrolling functionality for country and language lists
…ies and languages - Add loading flags for countries and languages - Check loading flags before initiating new load requests - Update loading flags appropriately during and after API calls - Ensure proper UI feedback during loading states
…ies and languages - Add loading flags for countries and languages - Check loading flags before initiating new load requests - Update loading flags appropriately during and after API calls - Ensure proper UI feedback while loads are in progress
…nd languages - Add countriesIsLoadingMore and languagesIsLoadingMore fields to EditSourceState - Update constructor, copyWith method, and field list to include new loading indicators
- Add a check for loading state before triggering onLoadMore() - Extract isLoadingExtractor from widget to avoid redundant calls - Improve performance and prevent unnecessary API calls
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Summary of Changes
Hello @fulleni, 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!
I've implemented performance enhancements for content management dropdowns, specifically focusing on data fetching. The core changes involve optimizing how search and 'load more' events are handled to prevent redundant requests and improve responsiveness. This was achieved by switching to droppable event transformers for search queries and introducing explicit loading state flags to manage concurrent 'load more' operations, ensuring a smoother user experience when interacting with these dropdowns.
Highlights
- Optimized Search Event Handling: I've updated the BLoC event transformers from
restartable()todroppable()for search-related events inCreateHeadlineBloc,CreateSourceBloc,EditHeadlineBloc, andEditSourceBloc. This ensures that if a user types quickly into a search field, only the latest search query is processed, discarding any previous, slower requests, which significantly improves responsiveness and reduces unnecessary network calls. - Implemented Loading State Flags: I've introduced new
isLoadingMoreflags (e.g.,countriesIsLoadingMore,languagesIsLoadingMore) within the state objects (CreateHeadlineState,CreateSourceState,EditHeadlineState,EditSourceState). These flags track whether a 'load more' operation for dropdown data is currently in progress, preventing multiple simultaneous requests. - Prevented Redundant 'Load More' Requests: I've added logic to the respective BLoCs to check these new
isLoadingMoreflags before initiating a new 'load more' request. This ensures that if a user rapidly scrolls to the bottom of a dropdown, only one data fetch is triggered at a time, preventing redundant API calls and improving performance. - Enhanced Dropdown Scroll-to-Load Logic: The
SearchableDropdownFormFieldwidget now utilizes the newisLoadingMorestate. It will only attempt to load more data when the user scrolls to the bottom if there isn't already an active loading operation, making the dropdowns more robust and efficient.
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Code Review
This pull request introduces several performance enhancements for dropdowns with search and load-more functionality. The addition of loading state flags (...IsLoadingMore) to prevent concurrent 'load more' requests is well-implemented and will improve the robustness of the UI. Similarly, preventing new 'load more' calls from the scroll listener while a request is in flight is a great addition.
However, I've identified a critical issue with the change from restartable() to droppable() for the search event transformers. While this may reduce the number of API calls, it introduces a functional regression where user input can be ignored, leading to a confusing search experience. I've left detailed comments with suggestions to revert this specific change in the affected BLoC files.
Other than that, the changes are solid and consistent across the codebase.
Status
READY/IN DEVELOPMENT/HOLD
Description
Type of Change