Dnspy/dnSpy/dnSpy.Contracts.DnSpy/Documents/ReferenceNavigator.cs
2021-09-20 18:20:01 +02:00

118 lines
4.5 KiB
C#

/*
Copyright (C) 2014-2019 de4dot@gmail.com
This file is part of dnSpy
dnSpy is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
dnSpy is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with dnSpy. If not, see <http://www.gnu.org/licenses/>.
*/
using System;
using System.Collections.ObjectModel;
using System.ComponentModel.Composition;
namespace dnSpy.Contracts.Documents {
/// <summary>
/// Shows a reference
/// </summary>
public abstract class ReferenceNavigatorService {
/// <summary>
/// Shows a reference. It can be called from any thread.
/// </summary>
/// <param name="reference">Reference. MEF exported <see cref="ReferenceConverter"/>s can convert this to another reference.</param>
/// <param name="options">Options passed to <see cref="ReferenceNavigator"/>s, eg. <see cref="PredefinedReferenceNavigatorOptions"/></param>
public abstract void GoTo(object? reference, object[]? options = null);
}
/// <summary>
/// Predefined <see cref="ReferenceNavigator"/> options
/// </summary>
public static class PredefinedReferenceNavigatorOptions {
/// <summary>
/// Show the reference in a new tab
/// </summary>
public const string NewTab = nameof(NewTab);
}
/// <summary>
/// Shows a reference. Use <see cref="ExportReferenceNavigatorAttribute"/> to export an instance.
/// </summary>
public abstract class ReferenceNavigator {
/// <summary>
/// Returns true if it showed the reference, and false if the next handler should get called.
/// This method is called on the UI thread.
/// </summary>
/// <param name="reference">Reference. MEF exported <see cref="ReferenceConverter"/>s can convert this reference to another reference.</param>
/// <param name="options">Options passed to <see cref="ReferenceNavigator"/>s, eg. <see cref="PredefinedReferenceNavigatorOptions"/></param>
/// <returns></returns>
public abstract bool GoTo(object reference, ReadOnlyCollection<object> options);
}
/// <summary>Metadata</summary>
public interface IReferenceNavigatorMetadata {
/// <summary>See <see cref="ExportReferenceNavigatorAttribute.Order"/></summary>
double Order { get; }
}
/// <summary>
/// Exports a <see cref="ReferenceNavigator"/> instance
/// </summary>
[MetadataAttribute, AttributeUsage(AttributeTargets.Class, AllowMultiple = false)]
public sealed class ExportReferenceNavigatorAttribute : ExportAttribute, IReferenceNavigatorMetadata {
/// <summary>Constructor</summary>
public ExportReferenceNavigatorAttribute()
: base(typeof(ReferenceNavigator)) => Order = double.MaxValue;
/// <summary>
/// Order of this instance
/// </summary>
public double Order { get; set; }
}
/// <summary>
/// Converts a reference passed to <see cref="ReferenceNavigatorService.GoTo(object, object[])"/>. This
/// new reference is passed to <see cref="ReferenceNavigator.GoTo(object, ReadOnlyCollection{object})"/>.
/// Use <see cref="ExportReferenceConverterAttribute"/> to export an instance.
/// </summary>
public abstract class ReferenceConverter {
/// <summary>
/// Converts a reference. If null is written to <paramref name="reference"/>,
/// <see cref="ReferenceNavigator.GoTo(object, ReadOnlyCollection{object})"/> won't get called.
/// This method is called on the UI thread.
/// </summary>
/// <param name="reference">Reference</param>
public abstract void Convert(ref object? reference);
}
/// <summary>Metadata</summary>
public interface IReferenceConverterMetadata {
/// <summary>See <see cref="ExportReferenceConverterAttribute.Order"/></summary>
double Order { get; }
}
/// <summary>
/// Exports a <see cref="ReferenceConverter"/> instance
/// </summary>
[MetadataAttribute, AttributeUsage(AttributeTargets.Class, AllowMultiple = false)]
public sealed class ExportReferenceConverterAttribute : ExportAttribute, IReferenceConverterMetadata {
/// <summary>Constructor</summary>
public ExportReferenceConverterAttribute()
: base(typeof(ReferenceConverter)) => Order = double.MaxValue;
/// <summary>
/// Order of this instance
/// </summary>
public double Order { get; set; }
}
}