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* Add comprehensive unit tests for WindowsKeyConverter - Implement 118 parallelizable unit tests for WindowsKeyConverter - Cover ToKey and ToKeyInfo methods with full bidirectional testing - Test basic characters, modifiers, special keys, function keys - Test VK_PACKET Unicode/IME input - Test OEM keys, NumPad keys, and lock states - Include round-trip conversion tests - All tests passing successfully Fixes #4389 * Rename `start` parameter to `viewportXOffset` for clarity The `start` parameter in several methods and interfaces has been renamed to `viewportXOffset` to better reflect its purpose as the horizontal offset of the viewport during string rendering. - Updated method signatures in `ListViewWithSelection` to use `viewportXOffset` instead of `start`, including default values. - Modified the `RenderUstr` method in `ListViewWithSelection` to use `viewportXOffset` for calculating the starting index. - Renamed the `start` parameter to `viewportXOffset` in the `IListDataSource` interface and updated its documentation. - Replaced all occurrences of `start` with `viewportXOffset` in the `ListWrapper<T>` class, including method calls and logic. - Updated the `RenderUstr` method in `ListWrapper<T>` to use `viewportXOffset` for substring calculations. - Adjusted the test method in `ListViewTests.cs` to reflect the parameter name change. These changes improve code readability and make the parameter's role in rendering logic more explicit. * Remove WindowsKeyConverterTests class that was added by mistake * Modernized ListView and IListDataSource - Tons of new unit tests Refactored `ListView` and `IListDataSource` to improve readability, maintainability, and functionality. Introduced `ListWrapper<T>` as a default implementation of `IListDataSource` for easier integration with standard collections. Enhanced `ListView` with better handling of marking, selection, and scrolling. Replaced `viewportXOffset` with `viewportX` for horizontal scrolling. Added `EnsureSelectedItemVisible` to maintain visibility of the selected item. Updated `IListDataSource` with detailed XML documentation and added `SuspendCollectionChangedEvent` for bulk updates. Improved null safety with nullable reference types. Added comprehensive unit tests for `ListWrapper<T>` and `IListDataSource` to ensure robustness. Modernized the codebase with C# features like expression-bodied members and pattern matching. Fixed bugs related to `SelectedItem` validation and rendering artifacts. * Improve index validation in ComboBox and ListView Enhance robustness by adding stricter checks for valid indices in ComboBox and ListView. Updated conditions in the `_listview.SelectedItemChanged` event handler to ensure `e.Item` is non-negative before accessing `_searchSet`. Modified the `SetValue` method to use `e.Item` instead of `_listview.SelectedItem`. In ListView, updated the `OnSelectedChanged` method to validate that `SelectedItem` is non-negative (`>= 0`) before accessing the `Source` list. These changes prevent potential out-of-range errors and improve code safety. * Refactor and enhance test coverage across modules Refactored and added new tests to improve coverage, readability, and consistency across multiple test files. Key changes include: - **ShortcutTests.cs**: Added tests for `BindKeyToApplication` and removed redundant tests. - **SourcesManagerTests.cs**: Renamed `Update_*` tests to `Load_*` for clarity. - **ArrangementTests.cs**: Reintroduced `MouseGrabHandler` tests, added `ViewArrangement` flag tests, and improved structure. - **NeedsDrawTests.cs**: Replaced `Application.Screen.Size` with fixed dimensions for better isolation. - **DimAutoTests.cs**: Updated layout tests to use fixed dimensions. - **FrameTests.cs**: Standardized object initialization and validated frame behavior. - **SubViewTests.cs**: Improved formatting and modernized event handling. - **NumericUpDownTests.cs**: Decoupled layout tests from screen size. General improvements: - Enhanced formatting and removed redundant tests. - Added comments for clarity. - Introduced `ITestOutputHelper` for better debugging in `ArrangementTests`. * Refactor to use nullable types for better null safety Enabled nullable reference types across the codebase to improve null safety and prevent potential null reference issues. Refactored `SelectedItem` and related properties from `int` to `int?` to represent no selection with `null` instead of `-1`. Updated logic, event arguments, and method signatures to handle nullable values consistently. Simplified object initialization using modern C# syntax and improved code readability with interpolated strings. Added null checks and early returns to prevent runtime errors. Enhanced error handling by throwing `ArgumentOutOfRangeException` for invalid values. Updated tests to reflect the changes, replacing assertions for `-1` with `null` and ensuring proper handling of nullable values. Cleaned up redundant code and improved formatting for better maintainability. * on` functionality has been deprecated, refactored, or removed from the `Shortcut` class. * Refactor: Transition to instance-based architecture Updated `Run-LocalCoverage.ps1` to increase `--blame-hang-timeout` from 10s to 60s. Improved null safety in `GuiTestContext` by adding null-conditional operators. Commented out problematic code in `SetupFakeApplicationAttribute.cs` to prevent test hangs. Excluded `ViewBase` files from `UnitTests.Parallelizable.csproj` and removed redundant folder declarations. Simplified event handling in `IListDataSourceTests.cs` and updated `ListViewTests.cs` to use nullable reference types. Enhanced documentation to emphasize the transition to an instance-based application architecture. Updated examples in `application.md`, `multitasking.md`, and `navigation.md` to reflect the use of `Application.Create()` and `View.App`. Clarified the obsolescence of the static `Application` class. Revised table of contents in `toc.yml` to include new sections like "Application Deep Dive" and "Scheme Deep Dive." Added `dotnet-tools.json` for tool configuration. These changes improve maintainability, testability, and alignment with modern C# practices. * Refactor ListViewTests to use Terminal.Gui framework The `ListViewTests` class has been refactored to replace the `AutoInitShutdown` attribute with explicit application lifecycle management using `IApplication` and `app.Init()` from the `Terminal.Gui` framework. Key changes include: - Rewriting tests to use `Terminal.Gui`'s application lifecycle. - Adding a private `_output` field for logging test output via `ITestOutputHelper`. - Updating `DriverAssert.AssertDriverContentsWithFrameAre` to include `app.Driver` for UI verification. - Rewriting tests like `Clicking_On_Border_Is_Ignored`, `EnsureSelectedItemVisible_SelectedItem`, and others to align with the new framework. - Adding explicit calls to `app.Shutdown()` for proper cleanup. - Enabling nullable reference types with `#nullable enable`. - Updating `using` directives and `namespace` to reflect the new structure. These changes improve test maintainability, compatibility, and diagnostics. * Update Terminal.Gui/Views/CollectionNavigation/CollectionNavigatorBase.cs Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * Update Terminal.Gui/Views/CollectionNavigation/CollectionNavigatorBase.cs Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * Update Examples/UICatalog/UICatalogTop.cs Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * Update Terminal.Gui/Views/ListWrapper.cs Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * Update Terminal.Gui/Views/ListWrapper.cs Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com> * Updated the `SetMark` method to return `Source.IsMarked(SelectedItem.Value)` for consistency and removed an outdated comment questioning its correctness. Enhanced the exception message in the `SelectedItem` property setter to provide clearer guidance when the value is out of range. * Add comprehensive ListView behavior test coverage Added multiple test methods to validate `ListView` behavior: - `Vertical_ScrollBar_Hides_And_Shows_As_Needed`: Ensures the vertical scrollbar auto-hides/shows based on content height. - `Mouse_Wheel_Scrolls`: Verifies vertical scrolling with the mouse wheel updates `TopItem`. - `SelectedItem_With_Source_Null_Does_Nothing`: Confirms no exceptions occur when setting `SelectedItem` with a `null` source. - `Horizontal_Scroll`: Tests horizontal scrolling, including programmatic and mouse wheel interactions, ensuring `LeftItem` updates correctly. - `SetSourceAsync_SetsSource`: Validates the asynchronous `SetSourceAsync` method updates the source and item count. - `AllowsMultipleSelection_Set_To_False_Unmarks_All_But_Selected`: Ensures disabling multiple selection unmarks all but the selected item. - `Source_CollectionChanged_Remove`: Confirms `SelectedItem` and source count update correctly when items are removed from the source collection. --------- Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Terminal.Gui v2
The premier toolkit for building rich console apps for Windows, the Mac, and Linux/Unix.
- The current, stable, release of Terminal.Gui v1 is .
⚠️ Note:
v1is in maintenance mode and we will only accept PRs for issues impacting existing functionality.
- The current
Alpharelease of Terminal.Gui v2 is
⚠️ Note:
Developers starting new TUI projects are encouraged to targetv2 Alpha. The API is significantly changed, and significantly improved. There will be breaking changes in the API before Beta, but the core API is stable.
Quick Start
Paste these commands into your favorite terminal on Windows, Mac, or Linux. This will install the Terminal.Gui.Templates, create a new "Hello World" TUI app, and run it.
(Press CTRL-Q to exit the app)
dotnet new --install Terminal.Gui.templates
dotnet new tui -n myproj
cd myproj
dotnet run
To run the UICatalog demo app that shows all the controls and features of the toolkit, use the following command:
dotnet run --project Examples/UICatalog/UICatalog.csproj
There is also a visual designer (uses Terminal.Gui itself).
Documentation
The full developer documentation for Terminal.Gui is available at gui-cs.github.io/Terminal.Gui.
Getting Started
- Getting Started - Quick start guide to create your first Terminal.Gui application
- Migrating from v1 to v2 - Complete guide for upgrading existing applications
- What's New in v2 - Overview of new features and improvements
API Reference
For detailed API documentation, see the API Reference.
Installing
Use NuGet to install the Terminal.Gui NuGet package:
v2 Alpha
(Infrequently updated, but stable enough for production use)
dotnet add package Terminal.Gui --version "2.0.0-alpha.*"
v2 Develop
(Frequently updated, but may have breaking changes)
dotnet add package Terminal.Gui --version "2.0.0-develop.*"
Legacy v1
dotnet add package Terminal.Gui --version "1.*
Or, you can use the Terminal.Gui.Templates.
Contributing
See CONTRIBUTING.md for complete contribution guidelines.
Debates on architecture and design can be found in Issues tagged with design.
History
See gui-cs for how this project came to be.