Extend View

[renkun-ken]

What problem did you solve?

Closes #160
Closes #162
Closes #51
Closes #175

Screenshot

View(globalenv())

View(lm)

View(rnorm(100))

m <- summary(lm(mpg ~ ., data = mtcars))
View(m)

?rnorm

Use FixedHeader in View(data.frame)

[vnijs]

This is really nice!

Question: Is there a reason why init.R is put into ~/.vscode-R/ and not into ~/.vscode/vscode-R/ ?

[vnijs]

Related to View (and shiny apps) in VSCode, if you go another tab (i.e., the WebView is hidden), state information is lost. As an example, open help for ?rnorm, scroll down, switch to another tab, and then back to the WebView. You will see it "reopen" the page and the information about where you were on the page is lot.

I think this could be resolved by setting retainContextWhenHidden (see links below).

https://code.visualstudio.com/api/extension-guides/webview#retaincontextwhenhidden
https://code.visualstudio.com/api/extension-guides/webview#getstate-and-setstate

Recent issue that mentions window.localStorage:

microsoft/vscode#82597 (comment)

[renkun-ken]

@vnijs Yes, now all WebViews are open with retainContextWhenHidden turned on. I was conservative about the resource usage when this is turned on but I test with large WebView and it looks okay.

[renkun-ken]

Question: Is there a reason why init.R is put into ~/.vscode-R/ and not into ~/.vscode/vscode-R/ ?

No specific reason for that. If ~/.vscode/vscode-R looks nicer and is typical for vscode extensions to store file on user machine, we may switch to it too. The only difference at the moment is that it is shorter.

[vnijs]

I'm not sure what is typical but it seems like a good idea to try and limit the number of dot files. There are so many in my home directory already :-)

[iainmstott]

This works really well for me! Great work. Really like the addition of the hover and View() functionality. Awesome!

One thing I'd note is that for whatever reason, I did need to restart VSCode twice to get it working. Don't know why. After the first restart, nothing happened after running the commands. But now it's working exactly as expected.

[renkun-ken]

@Ikuyadeu @andycraig This PR is a LGTM. Please take a look.

[andycraig]

@renkun-ken @Ikuyadeu This is great! It all works fine for me on Windows 10.

[Ikuyadeu]

@renkun-ken Thank you for the pull request.
@andycraig Thank you for reviewing.