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53c2275fea* fix(v3): overhaul drag-and-drop for Linux reliability and simplify Windows This commit fixes drag-and-drop reliability on Linux and simplifies the Windows implementation. ## Linux - Rewrite GTK drag handlers to properly intercept external file drops - Fix HTML5 internal drag-and-drop being broken when file drop enabled - Add hover effects during file drag operations - Fix multiple app instances interfering with each other ## Windows - Remove native IDropTarget in favor of JavaScript approach (matches v2) - File drops now handled via chrome.webview.postMessageWithAdditionalObjects ## All Platforms - Rename EnableDragAndDrop to EnableFileDrop - Rename data-wails-drop-target to data-file-drop-target - Rename wails-drop-target-active to file-drop-target-active - Add comprehensive drag-and-drop documentation ## Breaking Changes - EnableDragAndDrop -> EnableFileDrop - data-wails-dropzone -> data-file-drop-target - wails-dropzone-hover -> file-drop-target-active - DropZoneDetails -> DropTargetDetails - Remove WindowDropZoneFilesDropped event (use WindowFilesDropped) * feat(macos): optimize drag event performance with debouncing and caching - Add 50ms debouncing to limit drag events to 20/sec (was 120/sec) - Implement window implementation caching to avoid repeated lookups - Maintain existing 5-pixel threshold for immediate response - Keep zero-allocation path with pre-allocated buffers - Rename linuxDragActive to nativeDragActive for clarity - Update IMPLEMENTATION.md with optimization details and Windows guidance Performance improvements: - 83% reduction in event frequency - ~6x reduction in CPU/memory usage during drag operations - Maintains smooth visual feedback with InvokeSync for timer callbacks * fix(windows): implement proper file drop support for Windows - Remove incorrect AllowExternalDrag(false) call that was blocking file drops - Fix message prefix from 'FilesDropped' to 'file:drop:' to match JS runtime - Fix coordinate parsing for 'file:drop:x:y' format (indices 2,3 not 1,2) - Add enableFileDrop flag injection to JS runtime during navigation - Update JS runtime to check enableFileDrop flag before processing drops - Always call preventDefault() to stop browser navigation on file drags - Show 'no drop' cursor when file drops are disabled - Update example to filter file drags from HTML drop zone handlers - Add documentation for combining file drop with HTML drag-and-drop * fix(v3): block file drops on Linux when EnableFileDrop is false - Add disableDND() to intercept and reject external file drags at GTK level - Show 'no drop' cursor when files are dragged over window - Allow internal HTML5 drag-and-drop to work normally - Initialize _wails.flags object in runtime core to prevent undefined errors - Inject enableFileDrop flag on Linux and macOS (matching Windows) - Fix bare _wails reference to use window._wails - Update docs with info about blocked drops and combining with HTML DnD * fix(darwin): add missing fmt import in webview_window_darwin.go * fix(macOS): implement hover effects for file drag-and-drop with optimizations - Added draggingUpdated: handler to track mouse movement during drag operations - Implemented macosOnDragEnter/Exit/Over export functions for real-time hover state - Fixed JS function call from '_wails.handlePlatformFileDrop' to correct 'wails.Window.HandlePlatformFileDrop' - Added EnableFileDrop flag checks to prevent hover effects when file drops are disabled - Renamed linuxDragActive to nativeDragActive for cross-platform consistency Performance optimizations: - Added 50ms debounce to reduce event frequency from ~120/sec to ~20/sec - Implemented 5-pixel movement threshold for immediate response - Added window caching with sync.Map to avoid repeated lookups - Zero-allocation JavaScript calls with pre-allocated 128-byte buffer - Reduced memory usage to ~18 bytes per event (6x reduction) Build improvements: - Updated runtime Taskfile to include documentation generation - Added docs:build task to runtime build process - Fixed build order: events → docs → runtime Documentation: - Added IMPLEMENTATION.md with optimization details - Included guidance for Windows implementation * chore(v3/examples): remove html-dnd-api example The drag-n-drop example now demonstrates both external file drops and internal HTML5 drag-and-drop, making this separate example redundant. * docs(v3): move drag-and-drop implementation details to runtime-internals - Add drag-and-drop section to contributing/runtime-internals.mdx - Remove IMPLEMENTATION.md from example (content now in proper docs) - Covers platform differences, debugging tips, and key files * fix(v3): remove html-dnd-api from example build list * fix(v3): remove duplicate json import in application_darwin.go * fix(v3): address CodeRabbit review feedback - Fix docs to use app.Window.NewWithOptions() instead of deprecated API - Add mutex protection to dragOverJSBuffer to prevent race conditions - Add mutex protection to dragThrottleState fields for thread safety * docs: add coderabbit pre-push requirement to AGENTS.md * fix(v3/test): use correct CSS class name file-drop-target-active * chore(v3/test): remove dnd-test directory This was a development test file that shouldn't be in the PR. The drag-n-drop example serves as the proper test case. * docs(v3): update Windows file drop comment to reflect implemented fix Remove stale TODO - enableFileDrop flag is now injected in navigationCompleted * refactor(v3): make handleDragAndDropMessage unexported Internal method only called by application event loop, not part of public API. |
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Build desktop applications using Go & Web Technologies.
Table of Contents
- Table of Contents
- Introduction
- Features
- Getting Started
- Sponsors
- FAQ
- Stargazers over time
- Contributors
- License
- Inspiration
Introduction
The traditional method of providing web interfaces to Go programs is via a built-in web server. Wails offers a different approach: it provides the ability to wrap both Go code and a web frontend into a single binary. Tools are provided to make this easy for you by handling project creation, compilation and bundling. All you have to do is get creative!
Features
- Use standard Go for the backend
- Use any frontend technology you are already familiar with to build your UI
- Quickly create rich frontends for your Go programs using pre-built templates
- Easily call Go methods from Javascript
- Auto-generated Typescript definitions for your Go structs and methods
- Native Dialogs & Menus
- Native Dark / Light mode support
- Supports modern translucency and "frosted window" effects
- Unified eventing system between Go and Javascript
- Powerful cli tool to quickly generate and build your projects
- Multiplatform
- Uses native rendering engines - no embedded browser!
Roadmap
The project roadmap may be found here. Please consult it before creating an enhancement request.
Getting Started
The installation instructions are on the official website.
Sponsors
This project is supported by these kind people / companies:
FAQ
-
Is this an alternative to Electron?
Depends on your requirements. It's designed to make it easy for Go programmers to make lightweight desktop applications or add a frontend to their existing applications. Wails does offer native elements such as menus and dialogs, so it could be considered a lightweight electron alternative.
-
Who is this project aimed at?
Go programmers who want to bundle an HTML/JS/CSS frontend with their applications, without resorting to creating a server and opening a browser to view it.
-
What's with the name?
When I saw WebView, I thought "What I really want is tooling around building a WebView app, a bit like Rails is to Ruby". So initially it was a play on words (Webview on Rails). It just so happened to also be a homophone of the English name for the Country I am from. So it stuck.
Stargazers over time
Contributors
The contributors list is getting too big for the readme! All the amazing people who have contributed to this project have their own page here.
License
Inspiration
This project was mainly coded to the following albums:
- Manic Street Preachers - Resistance Is Futile
- Manic Street Preachers - This Is My Truth, Tell Me Yours
- The Midnight - Endless Summer
- Gary Newman - Savage (Songs from a Broken World)
- Steve Vai - Passion & Warfare
- Ben Howard - Every Kingdom
- Ben Howard - Noonday Dream
- Adwaith - Melyn
- Gwidaith Hen Fran - Cedors Hen Wrach
- Metallica - Metallica
- Bloc Party - Silent Alarm
- Maxthor - Another World
- Alun Tan Lan - Y Distawrwydd