~chrisppy/beagles: list.go - sourcehut git


                                                                                
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// This file is part of beagles.
//
// Copyright © 2020 Chris Palmer <chris@red-oxide.org>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.

package main

import (
	"fmt"
	"strings"

	"github.com/gdamore/tcell"
	tui "gitlab.com/tslocum/cview"
)

type list struct {
	Widget *tui.List
}

func newList(theme *themeType) *list {
	view := tui.NewList()

	bgColor := theme.BackgroundColor
	fgColor := theme.ForegroundColor
	if theme.List != nil {
		bgColor = theme.List.BackgroundColor
		fgColor = theme.List.ForegroundColor
	}

	if bgColor == "transparent" {
		view.SetBackgroundColor(tcell.ColorDefault)
	} else {
		view.SetBackgroundColor(tcell.GetColor(bgColor))
	}

	view.SetMainTextColor(tcell.GetColor(fgColor))

	return &list{Widget: view}
}

func (w *list) increment() int {
	size := w.Widget.GetItemCount()
	if size == 0 {
		return -1
	}

	currItemIndex := w.index()

	newIndex := (currItemIndex + 1)
	if newIndex >= size {
		newIndex = 0
	}

	w.setIndex(newIndex)

	return newIndex
}

func (w *list) decrement() int {
	size := w.Widget.GetItemCount()
	if size == 0 {
		return -1
	}

	currItemIndex := w.index()

	newIndex := (currItemIndex - 1)
	if newIndex < 0 {
		newIndex = size - 1
	}

	w.setIndex(newIndex)

	return newIndex
}

func (w *list) setIndex(newIndex int) {
	w.Widget.SetCurrentItem(newIndex)
}

func (w *list) index() int {
	return w.Widget.GetCurrentItem()
}

func (w *list) size() int {
	return w.Widget.GetItemCount()
}

func (w *list) remove() int {
	i := w.index()
	w.Widget.RemoveItem(i)

	return i
}

func (w *list) add(item Item) {
	name := item.Title
	if strings.Contains(item.Type, "audio") {
		name = fmt.Sprintf("🎧 %s", name)
	}
	w.Widget.AddItem(name, "", rune(0), nil)
}

func (w *list) clear() {
	w.Widget.Clear()
}