Feature: custom tree view of current project

[rmunn]

Once microsoft/vscode#14048 is accepted and merged, VS Code will allow extensions to create a custom tree explorer. I'd like to see a visual representation of the .fsproj file -- especially the compilation order of the files in the project. I'd like to be able to click on a file and use Alt+Up or Alt+Down to rearrange it in project order, with visual feedback. (Currently the "F#: Move File Up" and "F#: Move File Down" commands give no visual feedback -- so I'm never sure if they're worked or not.) I'd also like to be able to right-click on a project and choose "Add New File..." or "Add Existing File..." from a popup menu. It might be possible to add more features later (like right-clicking to add project references, which would call Paket with appropriate parameters). But just having a visual representation of the compilation order of my files, and being able to rearrange them without having to look at the ugly XML syntax of .fsproj files, would be all I really want right now.

[Krzysztof-Cieslak]

Yes, we know about this PR and monitor it. Using it for better project explorer is definitely something we want to do.

[Krzysztof-Cieslak]

Prototype on workspaceTree branch.

[enricosada]

@Krzysztof-Cieslak you need some info (graph of <Compile, None, Content items, anything) to do that with new fsproj?

i can do that easy for readonly (no xml parsing, real msbuild evaluation, like current integration).

NewFsprj -> MsbuildItem list :

type MsbuildItem =
   | Folder of (string: name) * (MsbuildItem list)
   | None of (name: string) * (path: string)
   | Compiler of (name: string) * (path: string)
   | Content of (name: string) * (path: string)

Update is not something i can do now, but new fsproj is easy to manually edit

[Krzysztof-Cieslak]

Main problem is that usable API on Code side is not released yet shrug

[Kurren123]

@Krzysztof-Cieslak are there any issues we can monitor to track whether a usable API is coming? IMO this is the biggest thing that Visual Studio has over VS code (for F#) at the moment. If we can make this happen then there will be almost no reason to use Visual Studio.

**Edit: ** found it

[Krzysztof-Cieslak]

Prototype using new tree API from microsoft/vscode#26948

[enricosada]

Awesome @Krzysztof-Cieslak !!

maybe nest p2p under references? so doesnt waste space if collapsed

- `References`
   |- `Nuget packages`
   |- `Project References`
- Files

[Kurren123]

It's... beautiful

[Krzysztof-Cieslak]

[forki]

💋

[7sharp9]

How do you select what project you are on?

[Krzysztof-Cieslak]

Right now it displays all projects that are in current workspace (currently opened folder in Code)

[Krzysztof-Cieslak]

Initial version implemented in 2.26.1