mirror of
https://codeberg.org/scip/esctl.git
synced 2026-08-24 06:24:18 +02:00
135 lines
3.6 KiB
Go
135 lines
3.6 KiB
Go
package printer
|
|
|
|
/*
|
|
Copyright © 2026 Thomas von Dein
|
|
|
|
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/>.
|
|
*/
|
|
|
|
// pager setup using bubbletea
|
|
// file shamlelessly copied from:
|
|
// https://github.com/charmbracelet/bubbletea/tree/main/examples/pager
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"strings"
|
|
|
|
"github.com/charmbracelet/bubbles/viewport"
|
|
tea "github.com/charmbracelet/bubbletea"
|
|
"github.com/charmbracelet/lipgloss"
|
|
)
|
|
|
|
var (
|
|
titleStyle = func() lipgloss.Style {
|
|
b := lipgloss.RoundedBorder()
|
|
b.Right = "├"
|
|
|
|
return lipgloss.NewStyle().BorderStyle(b).Padding(0, 1)
|
|
}()
|
|
|
|
infoStyle = func() lipgloss.Style {
|
|
b := lipgloss.RoundedBorder()
|
|
b.Left = "┤"
|
|
|
|
return titleStyle.BorderStyle(b)
|
|
}()
|
|
)
|
|
|
|
type model struct {
|
|
content string
|
|
title string
|
|
ready bool
|
|
viewport viewport.Model
|
|
}
|
|
|
|
func (m model) Init() tea.Cmd {
|
|
return nil
|
|
}
|
|
|
|
func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
|
|
var cmd tea.Cmd
|
|
|
|
cmds := make([]tea.Cmd, 1)
|
|
|
|
switch msg := msg.(type) {
|
|
case tea.KeyMsg:
|
|
if k := msg.String(); k == "ctrl+c" || k == "q" || k == "esc" {
|
|
return m, tea.Quit
|
|
}
|
|
|
|
case tea.WindowSizeMsg:
|
|
headerHeight := lipgloss.Height(m.headerView())
|
|
footerHeight := lipgloss.Height(m.footerView())
|
|
verticalMarginHeight := headerHeight + footerHeight
|
|
|
|
if !m.ready {
|
|
// Since this program is using the full size of the viewport we
|
|
// need to wait until we've received the window dimensions before
|
|
// we can initialize the viewport. The initial dimensions come in
|
|
// quickly, though asynchronously, which is why we wait for them
|
|
// here.
|
|
m.viewport = viewport.New(msg.Width, msg.Height-verticalMarginHeight)
|
|
m.viewport.YPosition = headerHeight
|
|
m.viewport.SetContent(m.content)
|
|
m.ready = true
|
|
} else {
|
|
m.viewport.Width = msg.Width
|
|
m.viewport.Height = msg.Height - verticalMarginHeight
|
|
}
|
|
}
|
|
|
|
// Handle keyboard and mouse events in the viewport
|
|
m.viewport, cmd = m.viewport.Update(msg)
|
|
cmds[0] = cmd
|
|
|
|
return m, tea.Batch(cmds...)
|
|
}
|
|
|
|
func (m model) View() string {
|
|
if !m.ready {
|
|
return "\n Initializing..."
|
|
}
|
|
|
|
return fmt.Sprintf("%s\n%s\n%s", m.headerView(), m.viewport.View(), m.footerView())
|
|
}
|
|
|
|
func (m model) headerView() string {
|
|
// title := titleStyle.Render("RPN Help Overview")
|
|
title := titleStyle.Render(m.title)
|
|
line := strings.Repeat("─", max(0, m.viewport.Width-lipgloss.Width(title)))
|
|
|
|
return lipgloss.JoinHorizontal(lipgloss.Center, title, line)
|
|
}
|
|
|
|
func (m model) footerView() string {
|
|
info := infoStyle.Render(fmt.Sprintf("%3.f%%", m.viewport.ScrollPercent()*100))
|
|
line := strings.Repeat("─", max(0, m.viewport.Width-lipgloss.Width(info)))
|
|
|
|
return lipgloss.JoinHorizontal(lipgloss.Center, line, info)
|
|
}
|
|
|
|
func Pager(title, message string) {
|
|
pager := tea.NewProgram(
|
|
model{content: message, title: title},
|
|
tea.WithAltScreen(), // use the full size of the terminal in its "alternate screen buffer"
|
|
tea.WithMouseCellMotion(), // turn on mouse support so we can track the mouse wheel
|
|
)
|
|
|
|
if _, err := pager.Run(); err != nil {
|
|
fmt.Println("could not run pager:", err)
|
|
os.Exit(1)
|
|
}
|
|
}
|