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package helpers
import (
"time"
"github.com/jesseduffield/gocui"
"github.com/jesseduffield/lazygit/pkg/gui/presentation"
"github.com/jesseduffield/lazygit/pkg/gui/types"
"github.com/jesseduffield/lazygit/pkg/utils"
"github.com/sasha-s/go-deadlock"
)
type InlineStatusHelper struct {
c *HelperCommon
windowHelper *WindowHelper
contextsWithInlineStatus map[types.ContextKey]*inlineStatusInfo
mutex *deadlock.Mutex
}
func NewInlineStatusHelper(c *HelperCommon, windowHelper *WindowHelper) *InlineStatusHelper {
return &InlineStatusHelper{
c: c,
windowHelper: windowHelper,
contextsWithInlineStatus: make(map[types.ContextKey]*inlineStatusInfo),
mutex: &deadlock.Mutex{},
}
}
type InlineStatusOpts struct {
Item types.HasUrn
Operation types.ItemOperation
ContextKey types.ContextKey
}
type inlineStatusInfo struct {
refCount int
stop chan struct{}
}
// A custom task for WithInlineStatus calls; it wraps the original one and
// hides the status whenever the task is paused, and shows it again when
// continued.
type inlineStatusHelperTask struct {
gocui.Task
inlineStatusHelper *InlineStatusHelper
opts InlineStatusOpts
}
// poor man's version of explicitly saying that struct X implements interface Y
var _ gocui.Task = inlineStatusHelperTask{}
func (self inlineStatusHelperTask) Pause() {
self.inlineStatusHelper.stop(self.opts)
self.Task.Pause()
self.inlineStatusHelper.renderContext(self.opts.ContextKey)
}
func (self inlineStatusHelperTask) Continue() {
self.Task.Continue()
self.inlineStatusHelper.start(self.opts)
}
func (self *InlineStatusHelper) WithInlineStatus(opts InlineStatusOpts, f func(gocui.Task) error) {
context := self.c.ContextForKey(opts.ContextKey).(types.IListContext)
view := context.GetView()
visible := view.Visible && self.windowHelper.TopViewInWindow(context.GetWindowName(), false) == view
if visible && context.IsItemVisible(opts.Item) {
self.c.OnWorker(func(task gocui.Task) {
self.start(opts)
err := f(inlineStatusHelperTask{task, self, opts})
if err != nil {
self.c.OnUIThread(func() error {
return self.c.Error(err)
})
}
self.stop(opts)
})
} else {
message := presentation.ItemOperationToString(opts.Operation, self.c.Tr)
_ = self.c.WithWaitingStatus(message, func(t gocui.Task) error {
// We still need to set the item operation, because it might be used
// for other (non-presentation) purposes
self.c.State().SetItemOperation(opts.Item, opts.Operation)
defer self.c.State().ClearItemOperation(opts.Item)
return f(t)
})
}
}
func (self *InlineStatusHelper) start(opts InlineStatusOpts) {
self.c.State().SetItemOperation(opts.Item, opts.Operation)
self.mutex.Lock()
defer self.mutex.Unlock()
info := self.contextsWithInlineStatus[opts.ContextKey]
if info == nil {
info = &inlineStatusInfo{refCount: 0, stop: make(chan struct{})}
self.contextsWithInlineStatus[opts.ContextKey] = info
go utils.Safe(func() {
ticker := time.NewTicker(time.Millisecond * utils.LoaderAnimationInterval)
defer ticker.Stop()
outer:
for {
select {
case <-ticker.C:
self.renderContext(opts.ContextKey)
case <-info.stop:
break outer
}
}
})
}
info.refCount++
}
func (self *InlineStatusHelper) stop(opts InlineStatusOpts) {
self.mutex.Lock()
if info := self.contextsWithInlineStatus[opts.ContextKey]; info != nil {
info.refCount--
if info.refCount <= 0 {
info.stop <- struct{}{}
delete(self.contextsWithInlineStatus, opts.ContextKey)
}
}
self.mutex.Unlock()
self.c.State().ClearItemOperation(opts.Item)
// When recording a demo we need to re-render the context again here to
// remove the inline status. In normal usage we don't want to do this
// because in the case of pushing a branch this would first reveal the ↑3↓7
// status from before the push for a brief moment, to be replaced by a green
// checkmark a moment later when the async refresh is done. This looks
// jarring, so normally we rely on the async refresh to redraw with the
// status removed. (In some rare cases, where there's no refresh at all, we
// need to redraw manually in the controller; see TagsController.push() for
// an example.)
//
// In demos, however, we turn all async refreshes into sync ones, because
// this looks better in demos. In this case the refresh happens while the
// status is still set, so we need to render again after removing it.
if self.c.InDemo() {
self.renderContext(opts.ContextKey)
}
}
func (self *InlineStatusHelper) renderContext(contextKey types.ContextKey) {
self.c.OnUIThread(func() error {
_ = self.c.ContextForKey(contextKey).HandleRender()
return nil
})
}
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