Example of TableView needed

[corruptmemory]

I've tried my best to get a TableView to work. The code is here: https://github.com/corruptmemory/macdriver/blob/jim/tableview/macos/_examples/widgets/main.go

It's based on the existing widgets example. I can actually get the TableView to display data, but I have failed at every attempt to get the table headers to appear. If I explicitly get the View for the headers, I can forcibly display the headers "somewhere" in the TableView, but not where it's supposed to be.

[corruptmemory]

Here's a screenshot:

Go: 1.21.1
M2 Mac laptop
Rebased on upstream

[progrium]

Yea weird. I got it working though. First, you need to set the headerview of the tableview:

tableView.SetHeaderView(appkit.NewTableHeaderViewWithFrame(rectOf(0, 0, 0, 20)))

I originally tried with a zero frame but 20 height is what made it work.

Second, you have to wrap the tableview in a scrollview, I guess since the headers don't scroll they're rendered by the scrollview? I tried without a scrollview and it didn't work. Something like:

tsv := appkit.NewScrollView()
tsv.SetFrame(rectOf(0, 0, 400, 300))
tsv.SetDocumentView(tableView)
tsv.SetHasHorizontalScroller(true)
tsv.SetAutohidesScrollers(true)
tsv.SetTranslatesAutoresizingMaskIntoConstraints(true)
cv.AddSubview(tsv)

[progrium]

Since this one is tricky, it would be nice if you added a standalone tableview example!

[corruptmemory]

OK. Will do. I'll try this all when I'm back on the Mac.

[corruptmemory]

Verified this works. Working on a stand-alone example.

[corruptmemory]

OK, I've made some good progress on an example I want to send upstream:

https://github.com/corruptmemory/macdriver/tree/jim/tableview/macos/_examples/tableview

• Shows a TableView
• Dynamically updates the values in the table
• Implements a basic menu (so CMD-Q works)

But I'm either doing something wrong, or there is something else to look at.

If you quit the program with CMD-Q, the program always seems to cleanly exit. Clearly, this is what I want 😁 . However, if you close the window, I reliably get a "combined" CGO+Go stack trace. An abridged example:

 go run ./macos/_examples/tableview/...
# github.com/progrium/macdriver/macos/_examples/tableview
ld: warning: ignoring duplicate libraries: '-lSystem', '-lobjc'
2023-09-24 12:30:59.556 tableview[56325:1868712] *** Assertion failure in _NSTrackingAreaViewHelper *trackingAreaHelper(NSView *)(), winTrackingAreas.m:168
2023-09-24 12:30:59.558 tableview[56325:1868712] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '_trackingAreaHelper not allocated yet!'
*** First throw call stack:
(
        0   CoreFoundation                      0x00000001810cb154 __exceptionPreprocess + 176
        1   libobjc.A.dylib                     0x0000000180bea4d4 objc_exception_throw + 60
        2   Foundation                          0x00000001824996f8 -[NSMutableDictionary(NSMutableDictionary) initWithContentsOfFile:] + 0
        3   AppKit                              0x00000001847173c4 -[NSView(NSTrackingArea_Internal) _setTrackingAreasDirty:] + 148
        4   AppKit                              0x00000001842fb9f4 -[NSTableView(NSTableViewViewBased) _setTrackingAreasDirty:] + 72
        5   AppKit                              0x00000001842fa6ec -[NSTableView _tileAndRedisplayAll] + 168
        6   libffi.dylib                        0x0000000190e66050 ffi_call_SYSV + 80
        7   libffi.dylib                        0x0000000190e6eaf8 ffi_call_int + 1208
        8   tableview                           0x0000000104e050dc runtime.asmcgocall.abi0 + 124
)
libc++abi: terminating due to uncaught exception of type NSException
SIGABRT: abort
PC=0x180f3c764 m=0 sigcode=0
signal arrived during cgo execution

goroutine 1 [syscall, locked to thread]:
runtime.cgocall(0x1054eec40, 0x1400009d838)
        /opt/homebrew/opt/go/libexec/src/runtime/cgocall.go:157 +0x44 fp=0x1400009d800 sp=0x1400009d7c0 pc=0x104da5a54
github.com/progrium/macdriver/objc/ffi._Cfunc_ffi_call0(0x1400040c870, 0x18431c12c, 0x1061dede0, 0x1400040b1f0)
        _cgo_gotypes.go:149 +0x30 fp=0x1400009d830 sp=0x1400009d800 pc=0x104e6beb0
github.com/progrium/macdriver/objc/ffi.Call.func1(0x1400040c870?, 0x200000001?, 0x190e6f308?, {0x1400040b1f0?, 0x100000000?, 0x1400040b200?})
        /Users/jim/idpair/macdriver/objc/ffi/ffi.go:75 +0x70 fp=0x1400009d880 sp=0x1400009d830 pc=0x104e6c380
github.com/progrium/macdriver/objc/ffi.Call(0x1400040c870, 0x1400040b200?, 0x1061dede0, {0x1400040b1f0, 0x2, 0x2})
        /Users/jim/idpair/macdriver/objc/ffi/ffi.go:75 +0x30 fp=0x1400009d8e0 sp=0x1400009d880 pc=0x104e6c2b0
github.com/progrium/macdriver/objc.Call[...]({0x10575e378, 0x1398b8800}, {0x1d0a356f4}, {0x0, 0x0, 0x105660020})
        /Users/jim/idpair/macdriver/objc/call.go:61 +0x484 fp=0x1400009d9d0 sp=0x1400009d8e0 pc=0x104e822b4
github.com/progrium/macdriver/macos/appkit.TableView.ReloadData({{{{{...}}}}})
        /Users/jim/idpair/macdriver/macos/appkit/table_view.gen.go:364 +0x6c fp=0x1400009da20 sp=0x1400009d9d0 pc=0x1051951fc
main.valueGenerator.func2.1()
        /Users/jim/idpair/macdriver/macos/_examples/tableview/main.go:100 +0x5c fp=0x1400009da50 sp=0x1400009da20 pc=0x1054eac2c
github.com/progrium/macdriver/dispatch.runQueueTask(0x14a)
        /Users/jim/idpair/macdriver/dispatch/queue.go:73 +0x58 fp=0x1400009da90 sp=0x1400009da50 pc=0x104e6a5e8
_cgoexp_21b5f8650391_runQueueTask(0x1400009daf8?)
        _cgo_gotypes.go:131 +0x20 fp=0x1400009dab0 sp=0x1400009da90 pc=0x104e6a750
runtime.cgocallbackg1(0x104e6a730, 0x1400009dc90?, 0x0)
        /opt/homebrew/opt/go/libexec/src/runtime/cgocall.go:329 +0x23c fp=0x1400009db90 sp=0x1400009dab0 pc=0x104da5e9c
runtime.cgocallbackg(0x1400014dc68?, 0x104e00828?, 0x140000021a0?)
        /opt/homebrew/opt/go/libexec/src/runtime/cgocall.go:245 +0xec fp=0x1400009dc20 sp=0x1400009db90 pc=0x104da5bcc
runtime.cgocallbackg(0x104e6a730, 0x16b061ac8, 0x0)
        <autogenerated>:1 +0x1c fp=0x1400009dc50 sp=0x1400009dc20 pc=0x104e0719c
runtime.cgocallback(0x1400009dcc8, 0x104e6beb0, 0x1054eec40)
        /opt/homebrew/opt/go/libexec/src/runtime/asm_arm64.s:1105 +0xb0 fp=0x1400009dc80 sp=0x1400009dc50 pc=0x104e051f0
runtime.systemstack_switch()
        /opt/homebrew/opt/go/libexec/src/runtime/asm_arm64.s:200 +0x8 fp=0x1400009dc90 sp=0x1400009dc80 pc=0x104e02cb8
runtime.cgocall(0x1054eec40, 0x1400009dd08)
        /opt/homebrew/opt/go/libexec/src/runtime/cgocall.go:175 +0x70 fp=0x1400009dcd0 sp=0x1400009dc90 pc=0x104da5a80
github.com/progrium/macdriver/objc/ffi._Cfunc_ffi_call0(0x14000117b00, 0x18426adac, 0x1061dede0, 0x14000113810)
        _cgo_gotypes.go:149 +0x30 fp=0x1400009dd00 sp=0x1400009dcd0 pc=0x104e6beb0
github.com/progrium/macdriver/objc/ffi.Call.func1(0x14000117b00?, 0x200000001?, 0x190e6f308?, {0x14000113810?, 0x100000000?, 0x14000113820?})
        /Users/jim/idpair/macdriver/objc/ffi/ffi.go:75 +0x70 fp=0x1400009dd50 sp=0x1400009dd00 pc=0x104e6c380
github.com/progrium/macdriver/objc/ffi.Call(0x14000117b00, 0x14000113820?, 0x1061dede0, {0x14000113810, 0x2, 0x2})
        /Users/jim/idpair/macdriver/objc/ffi/ffi.go:75 +0x30 fp=0x1400009ddb0 sp=0x1400009dd50 pc=0x104e6c2b0
github.com/progrium/macdriver/objc.Call[...]({0x10575e198, 0x139705930}, {0x1d08b98ea}, {0x0, 0x0, 0x1056911a0})
        /Users/jim/idpair/macdriver/objc/call.go:61 +0x484 fp=0x1400009dea0 sp=0x1400009ddb0 pc=0x104e822b4
github.com/progrium/macdriver/macos/appkit.Application.Run({{{0x1056e77c0?}}})
        /Users/jim/idpair/macdriver/macos/appkit/application.gen.go:511 +0x6c fp=0x1400009def0 sp=0x1400009dea0 pc=0x1051291cc
main.main()
        /Users/jim/idpair/macdriver/macos/_examples/tableview/main.go:51 +0x1f0 fp=0x1400009df30 sp=0x1400009def0 pc=0x1054ea280
runtime.main()
        /opt/homebrew/opt/go/libexec/src/runtime/proc.go:267 +0x2bc fp=0x1400009dfd0 sp=0x1400009df30 pc=0x104dd6c3c
runtime.goexit()
        /opt/homebrew/opt/go/libexec/src/runtime/asm_arm64.s:1197 +0x4 fp=0x1400009dfd0 sp=0x1400009dfd0 pc=0x104e052e4

Clearly, there is some race condition going on here, but I'm having trouble diagnosing exactly what it is. Roughly speaking, it looks like the Objective-C and Go runtimes are shutting down in an incompatible manner.

Thoughts?

Another quick question: Is there a way to programmatically set the name of the "Application menu?" In my example, it's coming up with tableview; I want it to read Table View. I see that the "menu example" shows main for the application menu name. Doing some quick Googling resulted in nothing I could act upon. There is a lot of discussion about the info.plist and/or "application bundle," but no information about how to set this using code alone. Thoughts?

[corruptmemory]

OK, I think I sorted everything out. It appears that ReloadData() is more problematic than simply calling SetNeedsDisplay(true).

In any case, here's an MR: #217

[progrium]

Oh cool, sorry I wasn't able to take a look before. PR looks good!