Files
RobustToolbox/Robust.Client/UserInterface/XAML/Proxy/IXamlProxyManager.cs
T
6396ec472d XAML hot reloading (#5350)
* Move RobustXaml to a shared package

In a near-future change, I'll make it possible to optionally link to
this from Robust.Client, which will allow JIT compiling XAML.

Also upgrade it to a version of .NET that supports nullability
annotations.

* Re-namespace packages

* Add a JIT compiler, plus hooks that call into it

In Debug, after this change, all XAML will be hot reloaded once every
time an assembly is reloaded.

The new code is compiled with SRE and is _not_ sandboxed -- this is not
suitable to run against prod.

In Release, the hot reload path is totally skipped, using the same trick
as SmugLeaf used in an earlier attempt to implement this functionality.

* Hot reload: watcher

This is a bit of a horror, but there's not in-engine support for
identifying the source tree or the XAML files in it.

* Put everything dangerous behind conditional comp

* Code cleanup, docs

* Fix a bad comment

* Deal a little better with crashes in the watcher

* Make reload failures Info, since they're expected

They were previously causing the integration tests to flag, even though
"a few types fail hot reloading because they're internal" is expected
behavior.

* Fix an unnecessary null check

I removed the ability for CompileCore to return null.

* injectors: null! strings, default primitives

* Tidy documentation (thanks, PJB!)

* Reinstate netstandard2.0, abolish Pidgin

* Internal-ize all of Robust.Xaml

* Add a cautionary note to Sandbox.yml

* Shuffle around where conditional compilation occurs

* Privatize fields in XamlImplementationStorage

* Internalize XamlJitDelegate

* Inline some remarks. No cond. comp in Robust.Xaml

* Use file-scoped namespaces

They aren't allowed at Language Level 8.0. (which I arbitrarily picked
for Robust.Xaml because it's the oldest one that would work)

* Bump language level for R.Xaml, file namespaces

* Force hot reloading off for integration tests

* Fix bizarre comment/behavior in XamlImplementationStorage

* Consistently use interfaces, even in generated code

* Update Robust.Client/ClientIoC.cs

---------

Co-authored-by: Pieter-Jan Briers <pieterjan.briers@gmail.com>
2024-08-27 02:16:57 +02:00

77 lines
3.0 KiB
C#

using System;
namespace Robust.Client.UserInterface.XAML.Proxy;
/// <summary>
/// This service provides a proxy for Populate, which is the generated function that
/// initializes the UI objects of a Xaml widget.
/// </summary>
/// <remarks>
/// The proxy can always return false: in that case, a Xaml widget will self-populate
/// as usual. This is the behavior on Release builds.
///
/// However, it can also call into an externally-provided implementation of the Xaml
/// widget.
///
/// No source of externally-provided implementations actually exists, by default --
/// you will need to call SetImplementation with a blob of xaml source code to provide
/// one. <see cref="IXamlHotReloadManager" /> is an example of a service that calls into
/// that functionality.
/// </remarks>
internal interface IXamlProxyManager
{
/// <summary>
/// Initialize creates the <see cref="IXamlProxyManager"/>.
/// </summary>
/// <remarks>
/// If the <see cref="IXamlProxyManager" /> is not a stub, then it will spy on the
/// assembly list (from <see cref="Robust.Shared.Reflection.IReflectionManager" />)
/// and find <see cref="XamlMetadataAttribute" /> entries on the loaded types.
/// </remarks>
void Initialize();
/// <summary>
/// Return true if at least one <see cref="Type"/> in the current project expects its XAML
/// to come from a file with the given name.
/// </summary>
/// <remarks>
/// This method supports code that is trying to figure out what name the build process
/// would have assigned to a resource file. A caller can try a few candidate names and use
/// its "yes" to continue.
///
/// This method is very fast, so it's OK to hammer it!
///
/// Also, on a non-tools build, this always returns false.
/// </remarks>
/// <param name="fileName">the filename</param>
/// <returns>true if expected</returns>
bool CanSetImplementation(string fileName);
/// <summary>
/// Replace the implementation of <paramref name="fileName"/> with <paramref name="fileContent" />,
/// compiling it if needed.
///
/// All types based on <paramref name="fileName" /> will be recompiled.
/// </summary>
/// <remarks>
/// This may fail and the caller won't be notified. (There will usually be logs.)
///
/// On a non-tools build, this fails silently.
/// </remarks>
/// <param name="fileName">the name of the file</param>
/// <param name="fileContent">the new content of the file</param>
void SetImplementation(string fileName, string fileContent);
/// <summary>
/// If we have a JIT version of the XAML code for <paramref name="t" />, then call
/// the new implementation on <paramref name="o" />.
/// </summary>
/// <remarks>
/// <paramref name="o" /> may be a subclass of <paramref name="t" />.
/// </remarks>
/// <param name="t">the static type of the object</param>
/// <param name="o">the object</param>
/// <returns>true if we called a hot reloaded implementation</returns>
bool Populate(Type t, object o);
}