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Merge pull request #280 from gui-cs/treeview-t-support
TreeView<T> support
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| using System.CodeDom; | ||
| using Terminal.Gui; | ||
| using TerminalGuiDesigner.ToCode; | ||
|
|
||
| namespace TerminalGuiDesigner | ||
| { | ||
| /// <summary> | ||
| /// Provides knowledge about how to handle different T types for generic | ||
| /// views e.g. <see cref="Slider{T}"/>, <see cref="TreeView{T}"/> | ||
| /// </summary> | ||
| public static class TTypes | ||
| { | ||
| /// <summary> | ||
| /// Returns <see cref="CodeObjectCreateExpression"/> or <see cref="CodePrimitiveExpression"/> | ||
| /// or similar that represents <paramref name="value"/>. | ||
| /// </summary> | ||
| /// <param name="args"></param> | ||
| /// <param name="design"></param> | ||
| /// <param name="value"></param> | ||
| /// <returns></returns> | ||
| public static CodeExpression ToCode(CodeDomArgs args, Design design, object? value) | ||
| { | ||
| if(value == null || value is string || value.GetType().IsValueType) | ||
| { | ||
| return value.ToCodePrimitiveExpression(); | ||
| } | ||
|
|
||
| if(value is FileSystemInfo fsi) | ||
| { | ||
| return new CodeObjectCreateExpression(value.GetType(), fsi.ToString().ToCodePrimitiveExpression()); | ||
| } | ||
|
|
||
| throw new NotSupportedException("Value Type ToCode not known" + value.GetType()); | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Returns all Types which can be used with generic view of the given <paramref name="viewType"/>. | ||
| /// </summary> | ||
| /// <param name="viewType">A generic view type e.g. <see langword="typeof"/>(Slider<>)</param> | ||
| /// <returns></returns> | ||
| public static IEnumerable<Type> GetSupportedTTypesForGenericViewOfType(Type viewType) | ||
| { | ||
| if (viewType == typeof(Slider<>)) | ||
| { | ||
| return new[] { typeof(int), typeof(string), typeof(float), typeof(double), typeof(bool) }; | ||
| } | ||
|
|
||
| if (viewType == typeof(TreeView<>)) | ||
| { | ||
| return new[] { typeof(object), typeof(FileSystemInfo) }; | ||
| } | ||
|
|
||
| throw new NotSupportedException($"Generic View {viewType} is not yet supported"); | ||
| } | ||
|
|
||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| namespace TerminalGuiDesigner.ToCode; | ||
|
|
||
| /// <summary> | ||
| /// Interface for generic class <see cref="TreeObjectsProperty{T}"/> | ||
| /// </summary> | ||
| public interface ITreeObjectsProperty | ||
| { | ||
| /// <summary> | ||
| /// Returns True if the T type the property was constructed with is well | ||
| /// supported by the designer (i.e. user can pick objects for their tree). | ||
| /// </summary> | ||
| /// <returns></returns> | ||
| bool IsSupported(); | ||
|
|
||
| /// <summary> | ||
| /// Returns true if the collection currently held on the property is empty | ||
| /// </summary> | ||
| /// <returns></returns> | ||
| public bool IsEmpty(); | ||
| } |
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