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// Copyright 2019-2022 Graham Clark. All rights reserved. Use of this source
// code is governed by the MIT license that can be found in the LICENSE
// file.
// Package tableutil contains user-interface functions and helpers for termshark's
// tables - in particular, helpers for vim key sequences like 5gg and G
package tableutil
import (
"github.com/gcla/gowid"
"github.com/gcla/gowid/widgets/table"
"github.com/gcla/termshark/v2"
"github.com/gcla/termshark/v2/widgets/appkeys"
"github.com/gdamore/tcell/v2"
)
//======================================================================
type GoToAdapter struct {
*table.BoundedWidget
*termshark.KeyState
}
var _ IGoToLineRequested = (*GoToAdapter)(nil)
func (t *GoToAdapter) GoToLineOrTop(evk *tcell.EventKey) (bool, int) {
num := -1
if t.NumberPrefix != -1 {
num = t.NumberPrefix - 1
}
return evk.Key() == tcell.KeyRune && evk.Rune() == 'g' && t.PartialgCmd, num
}
func (t *GoToAdapter) GoToLineOrBottom(evk *tcell.EventKey) (bool, int) {
num := -1
if t.NumberPrefix != -1 {
num = t.NumberPrefix - 1
}
return evk.Key() == tcell.KeyRune && evk.Rune() == 'G', num
}
type IGoToLineRequested interface {
GoToLineOrTop(evk *tcell.EventKey) (bool, int) // -1 means top
GoToLineOrBottom(evk *tcell.EventKey) (bool, int) // -1 means bottom
GoToFirst(gowid.IApp) bool
GoToLast(gowid.IApp) bool
GoToNth(gowid.IApp, int) bool
}
// GotoHander retrusn a function suitable for the appkeys widget - it will
// check to see if the key represents a supported action on the table and
// then runs the action if so.
func GotoHandler(t IGoToLineRequested) appkeys.KeyInputFn {
return func(evk *tcell.EventKey, app gowid.IApp) bool {
handled := false
if t != nil {
handled = true
if doit, line := t.GoToLineOrTop(evk); doit {
if line == -1 {
t.GoToFirst(app)
} else {
// psml starts counting at 1
t.GoToNth(app, line)
}
} else if doit, line := t.GoToLineOrBottom(evk); doit {
if line == -1 {
t.GoToLast(app)
} else {
// psml starts counting at 1
t.GoToNth(app, line)
}
} else {
handled = false
}
}
return handled
}
}
//======================================================================
// Local Variables:
// mode: Go
// fill-column: 110
// End:
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