better way of rendering to the main view
Jesse Duffield
2 years ago
parent
5ffbeae3e8
commit
52040d1d99
@ -0,0 +1,100 @@
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package gui
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import (
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"time"
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"github.com/jesseduffield/lazydocker/pkg/tasks"
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)
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func (gui *Gui) QueueTask(f func(stop chan struct{})) error {
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return gui.taskManager.NewTask(f)
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}
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type RenderStringTaskOpts struct {
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Autoscroll bool
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Wrap bool
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GetStrContent func() string
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}
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type TaskOpts struct {
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Autoscroll bool
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Wrap bool
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Func func(stop chan struct{})
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}
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type TickerTaskOpts struct {
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Duration time.Duration
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Before func(stop chan struct{})
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Func func(stop, notifyStopped chan struct{})
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Autoscroll bool
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Wrap bool
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}
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func (gui *Gui) NewRenderStringTask(opts RenderStringTaskOpts) tasks.TaskFunc {
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taskOpts := TaskOpts{
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Autoscroll: opts.Autoscroll,
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Wrap: opts.Wrap,
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Func: func(stop chan struct{}) {
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gui.RenderStringMain(opts.GetStrContent())
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},
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}
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return gui.NewTask(taskOpts)
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}
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// assumes it's cheap to obtain the content (otherwise we would pass a function that returns the content)
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func (gui *Gui) NewSimpleRenderStringTask(getContent func() string) tasks.TaskFunc {
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return gui.NewRenderStringTask(RenderStringTaskOpts{
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GetStrContent: getContent,
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Autoscroll: false,
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Wrap: gui.Config.UserConfig.Gui.WrapMainPanel,
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})
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}
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func (gui *Gui) NewTask(opts TaskOpts) tasks.TaskFunc {
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return func(stop chan struct{}) {
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mainView := gui.Views.Main
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mainView.Autoscroll = opts.Autoscroll
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mainView.Wrap = opts.Wrap
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opts.Func(stop)
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}
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}
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// NewTickerTask is a convenience function for making a new task that repeats some action once per e.g. second
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// the before function gets called after the lock is obtained, but before the ticker starts.
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// if you handle a message on the stop channel in f() you need to send a message on the notifyStopped channel because returning is not sufficient. Here, unlike in a regular task, simply returning means we're now going to wait till the next tick to run again.
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func (gui *Gui) NewTickerTask(opts TickerTaskOpts) tasks.TaskFunc {
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notifyStopped := make(chan struct{}, 10)
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task := func(stop chan struct{}) {
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if opts.Before != nil {
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opts.Before(stop)
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}
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tickChan := time.NewTicker(opts.Duration)
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defer tickChan.Stop()
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// calling f first so that we're not waiting for the first tick
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opts.Func(stop, notifyStopped)
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for {
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select {
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case <-notifyStopped:
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gui.Log.Info("exiting ticker task due to notifyStopped channel")
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return
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case <-stop:
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gui.Log.Info("exiting ticker task due to stopped cahnnel")
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return
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case <-tickChan.C:
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gui.Log.Info("running ticker task again")
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opts.Func(stop, notifyStopped)
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}
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}
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}
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taskOpts := TaskOpts{
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Autoscroll: opts.Autoscroll,
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Wrap: opts.Wrap,
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Func: task,
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}
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return gui.NewTask(taskOpts)
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}
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