diff options
Diffstat (limited to 'lib/ui')
| -rw-r--r-- | lib/ui/interfaces.go | 3 | ||||
| -rw-r--r-- | lib/ui/textinput.go | 2 | ||||
| -rw-r--r-- | lib/ui/ui.go | 58 |
3 files changed, 21 insertions, 42 deletions
diff --git a/lib/ui/interfaces.go b/lib/ui/interfaces.go index 8ede22c7..19f0c04f 100644 --- a/lib/ui/interfaces.go +++ b/lib/ui/interfaces.go @@ -4,9 +4,6 @@ import ( "github.com/gdamore/tcell/v2" ) -// AercMsg is used to communicate within aerc -type AercMsg interface{} - // Drawable is a UI component that can draw. Unless specified, all methods must // only be called from a single goroutine, the UI goroutine. type Drawable interface { diff --git a/lib/ui/textinput.go b/lib/ui/textinput.go index d76e9349..b2ba33f6 100644 --- a/lib/ui/textinput.go +++ b/lib/ui/textinput.go @@ -329,7 +329,7 @@ func (ti *TextInput) showCompletions() { } ti.completions, ti.prefix = ti.tabcomplete(ti.StringLeft()) ti.completeIndex = -1 - QueueRedraw() + Invalidate() } func (ti *TextInput) OnChange(onChange func(ti *TextInput)) { diff --git a/lib/ui/ui.go b/lib/ui/ui.go index bc054ac5..628946fa 100644 --- a/lib/ui/ui.go +++ b/lib/ui/ui.go @@ -3,52 +3,43 @@ package ui import ( "sync/atomic" - "git.sr.ht/~rjarry/aerc/log" "github.com/gdamore/tcell/v2" ) const ( // nominal state, UI is up to date CLEAN int32 = iota - // redraw is required but not explicitly requested + // UI render has been queued in Redraw channel DIRTY - // redraw has been explicitly requested - REDRAW_PENDING ) -var MsgChannel = make(chan AercMsg, 50) - -type AercFuncMsg struct { - Func func() -} - // State of the UI. Any value other than 0 means the UI is in a dirty state. // This should only be accessed via atomic operations to maintain thread safety var uiState int32 -// QueueRedraw marks the UI as invalid and sends a nil message into the -// MsgChannel. Nothing will handle this message, but a redraw will occur -func QueueRedraw() { - if atomic.SwapInt32(&uiState, REDRAW_PENDING) != REDRAW_PENDING { - MsgChannel <- nil - } -} +var Callbacks = make(chan func(), 50) // QueueFunc queues a function to be called in the main goroutine. This can be // used to prevent race conditions from delayed functions func QueueFunc(fn func()) { - MsgChannel <- &AercFuncMsg{Func: fn} + Callbacks <- fn } -// Invalidate marks the entire UI as invalid. Invalidate can be called from any -// goroutine +// Use a buffered channel of size 1 to avoid blocking callers of Invalidate() +var Redraw = make(chan bool, 1) + +// Invalidate marks the entire UI as invalid and request a redraw as soon as +// possible. Invalidate can be called from any goroutine and will never block. func Invalidate() { - atomic.StoreInt32(&uiState, DIRTY) + if atomic.SwapInt32(&uiState, DIRTY) != DIRTY { + Redraw <- true + } } type UI struct { Content DrawableInteractive - exit atomic.Value // bool + Quit chan struct{} + Events chan tcell.Event ctx *Context screen tcell.Screen popover *Popover @@ -73,11 +64,14 @@ func Initialize(content DrawableInteractive) (*UI, error) { state := UI{ Content: content, screen: screen, + // Use unbuffered channels (always blocking unless somebody can + // read immediately) We are merely using this as a proxy to + // tcell screen internal event channel. + Events: make(chan tcell.Event), + Quit: make(chan struct{}), } state.ctx = NewContext(width, height, screen, state.onPopover) - state.exit.Store(false) - Invalidate() if beeper, ok := content.(DrawableInteractiveBeeper); ok { beeper.OnBeep(screen.Beep) @@ -87,6 +81,7 @@ func Initialize(content DrawableInteractive) (*UI, error) { if root, ok := content.(RootDrawable); ok { root.Initialize(&state) } + go state.screen.ChannelEvents(state.Events, state.Quit) return &state, nil } @@ -95,12 +90,8 @@ func (state *UI) onPopover(p *Popover) { state.popover = p } -func (state *UI) ShouldExit() bool { - return state.exit.Load().(bool) -} - func (state *UI) Exit() { - state.exit.Store(true) + close(state.Quit) } func (state *UI) Close() { @@ -124,15 +115,6 @@ func (state *UI) EnableMouse() { state.screen.EnableMouse() } -func (state *UI) ChannelEvents() { - go func() { - defer log.PanicHandler() - for { - MsgChannel <- state.screen.PollEvent() - } - }() -} - func (state *UI) HandleEvent(event tcell.Event) { if event, ok := event.(*tcell.EventResize); ok { state.screen.Clear() |