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package gui
import (
"io"
"os/exec"
"strings"
"github.com/jesseduffield/gocui"
"github.com/jesseduffield/lazygit/pkg/tasks"
)
func (gui *Gui) newCmdTask(view *gocui.View, cmd *exec.Cmd, prefix string) error {
cmdStr := strings.Join(cmd.Args, " ")
gui.c.Log.WithField(
"command",
cmdStr,
).Debug("RunCommand")
manager := gui.getManager(view)
start := func() (*exec.Cmd, io.Reader) {
r, err := cmd.StdoutPipe()
if err != nil {
gui.c.Log.Error(err)
}
cmd.Stderr = cmd.Stdout
if err := cmd.Start(); err != nil {
gui.c.Log.Error(err)
}
return cmd, r
}
linesToRead := gui.linesToReadFromCmdTask(view)
if err := manager.NewTask(manager.NewCmdTask(start, prefix, linesToRead, nil), cmdStr); err != nil {
gui.c.Log.Error(err)
}
return nil
}
func (gui *Gui) newStringTask(view *gocui.View, str string) error {
// using str so that if rendering the exact same thing we don't reset the origin
return gui.newStringTaskWithKey(view, str, str)
}
func (gui *Gui) newStringTaskWithoutScroll(view *gocui.View, str string) error {
manager := gui.getManager(view)
f := func(stop chan struct{}) error {
gui.setViewContent(view, str)
return nil
}
// Using empty key so that on subsequent calls we won't reset the view's origin.
// Note this means that we will be scrolling back to the top if we're switching from a different key
if err := manager.NewTask(f, ""); err != nil {
return err
}
return nil
}
func (gui *Gui) newStringTaskWithScroll(view *gocui.View, str string, originX int, originY int) error {
manager := gui.getManager(view)
f := func(stop chan struct{}) error {
gui.setViewContent(view, str)
_ = view.SetOrigin(originX, originY)
return nil
}
if err := manager.NewTask(f, ""); err != nil {
return err
}
return nil
}
func (gui *Gui) newStringTaskWithKey(view *gocui.View, str string, key string) error {
manager := gui.getManager(view)
f := func(stop chan struct{}) error {
return gui.renderString(view, str)
}
if err := manager.NewTask(f, key); err != nil {
return err
}
return nil
}
func (gui *Gui) getManager(view *gocui.View) *tasks.ViewBufferManager {
manager, ok := gui.viewBufferManagerMap[view.Name()]
if !ok {
manager = tasks.NewViewBufferManager(
gui.Log,
view,
func() {
// we could clear here, but that actually has the effect of causing a flicker
// where the view may contain no content momentarily as the gui refreshes.
// Instead, we're rewinding the write pointer so that we will just start
// overwriting the existing content from the top down. Once we've reached
// the end of the content do display, we call view.FlushStaleCells() to
// clear out the remaining content from the previous render.
view.Reset()
},
func() {
gui.render()
},
func() {
// Need to check if the content of the view is well past the origin.
linesHeight := view.ViewLinesHeight()
_, originY := view.Origin()
if linesHeight < originY {
newOriginY := linesHeight
err := view.SetOrigin(0, newOriginY)
if err != nil {
panic(err)
}
}
view.FlushStaleCells()
},
func() {
_ = view.SetOrigin(0, 0)
},
)
gui.viewBufferManagerMap[view.Name()] = manager
}
return manager
}
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