bubbles/README.md

Bubbles
=======

<p>
  <img src="https://stuff.charm.sh/bubbles/bubbles-github.png" width="233" alt="The Bubbles Logo">
</p>

[![Latest Release](https://img.shields.io/github/release/charmbracelet/bubbles.svg)](https://github.com/charmbracelet/bubbles/releases)
[![GoDoc](https://godoc.org/github.com/golang/gddo?status.svg)](https://pkg.go.dev/github.com/charmbracelet/bubbles)
[![Build Status](https://github.com/charmbracelet/bubbles/workflows/build/badge.svg)](https://github.com/charmbracelet/bubbles/actions)
[![Go ReportCard](https://goreportcard.com/badge/charmbracelet/bubbles)](https://goreportcard.com/report/charmbracelet/bubbles)

Some components for [Bubble Tea](https://github.com/charmbracelet/bubbletea)
applications. These components are used in production in [Glow][glow],
[Charm][charm] and [many other applications][otherstuff].

[glow]: https://github.com/charmbracelet/glow
[charm]: https://github.com/charmbracelet/charm
[otherstuff]: https://github.com/charmbracelet/bubbletea/#bubble-tea-in-the-wild


## Spinner

<img src="https://stuff.charm.sh/bubbles-examples/spinner.gif" width="400" alt="Spinner Example">

A spinner, useful for indicating that some kind an operation is happening.
There are a couple default ones, but you can also pass your own ”frames.”

* [Example code, basic spinner](https://github.com/charmbracelet/tea/tree/master/examples/spinner/main.go)
* [Example code, various spinners](https://github.com/charmbracelet/tea/tree/master/examples/spinners/main.go)


## Text Input

<img src="https://stuff.charm.sh/bubbles-examples/textinput.gif" width="400" alt="Text Input Example">

A text input field, akin to an `<input type="text">` in HTML. Supports unicode,
pasting, in-place scrolling when the value exceeds the width of the element and
the common, and many customization options.

* [Example code, one field](https://github.com/charmbracelet/tea/tree/master/examples/textinput/main.go)
* [Example code, many fields](https://github.com/charmbracelet/tea/tree/master/examples/textinputs/main.go)


## Progress

<img src="https://stuff.charm.sh/bubbles-examples/progress.gif" width="800" alt="Progressbar Example">

A simple, customizable progress meter, with optional animation via
[Harmonica][harmonica]. Supports solid and gradient fills. The empty and filled
runes can be set to whatever you'd like. The percentage readout is customizable
and can also be omitted entirely.

* [Animated example](https://github.com/charmbracelet/bubbletea/blob/master/examples/progress-animated/main.go)
* [Static example](https://github.com/charmbracelet/bubbletea/blob/master/examples/progress-static/main.go)

[harmonica]: https://github.com/charmbracelet/harmonica


## Paginator

<img src="https://stuff.charm.sh/bubbles-examples/pagination.gif" width="200" alt="Paginator Example">

A component for handling pagination logic and optionally drawing pagination UI.
Supports "dot-style" pagination (similar to what you might see on iOS) and
numeric page numbering, but you could also just use this component for the
logic and visualize pagination however you like.

* [Example code](https://github.com/charmbracelet/bubbletea/blob/master/examples/pager/main.go)


## Viewport

<img src="https://stuff.charm.sh/bubbles-examples/viewport.gif" width="600" alt="Viewport Example">

A viewport for vertically scrolling content. Optionally includes standard
pager keybindings and mouse wheel support. A high performance mode is available
for applications which make use of the alternate screen buffer.

* [Example code](https://github.com/charmbracelet/tea/tree/master/examples/pager/main.go)

This component is well complemented with [Reflow][reflow] for ANSI-aware
indenting and text wrapping.

[reflow]: https://github.com/muesli/reflow


## List

<img src="https://stuff.charm.sh/bubbles-examples/list.gif" width="600" alt="List Example">

A customizable, batteries-included component for browsing a set of items.
Features pagination, fuzzy filtering, auto-generated help, an activity spinner,
and status messages, all of which can be enabled and disabled as needed.
Extrapolated from [Glow][glow].

* [Example code, default list](https://github.com/charmbracelet/tea/tree/master/examples/list-default/main.go)
* [Example code, simple list](https://github.com/charmbracelet/tea/tree/master/examples/list-simple/main.go)
* [Example code, all features](https://github.com/charmbracelet/tea/tree/master/examples/list-fancy/main.go)


## Help

<img src="https://stuff.charm.sh/bubbles-examples/help.gif" width="500" alt="Help Example">

A customizable horizontal mini help view that automatically generates itself
from your keybindings. It features single and multi-line modes, which the user
can optionally toggle between. It will truncate gracefully if the terminal is
too wide for the content.

* [Example code](https://github.com/charmbracelet/bubbletea/blob/master/examples/help/main.go)


## Key

A non-visual component for managing keybindings. It’s useful for allowing users
to remap keybindings as well as generating help views corresponding to your
keybindings.

```go
type KeyMap struct {
    Up key.Binding
    Down key.Binding
}

var DefaultKeyMap = KeyMap{
    Up: key.NewBinding(
        key.WithKeys("k", "up"),        // actual keybindings
        key.WithHelp("↑/k", "move up"), // corresponding help text
    ),
    Down: key.NewBinding(
        WithKeys("j", "down"),
        WithHelp("↓/j", "move down"),
    ),
}

func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
    switch msg := msg.(type) {
    case tea.KeyMsg:
        switch {
        case key.Matches(msg, DefaultKeyMap.Up):
            // The user pressed up
        case key.Matches(msg, DefaultKeyMap.Down):
            // The user pressed down
        }
    }
    return m, nil
}
```


## Additional Bubbles

* [promptkit](https://github.com/erikgeiser/promptkit): A collection of common
  prompts for cases like selection, text input, and confirmation. Each prompt
  comes with sensible defaults, remappable keybindings, any many customization
  options.
* [mritd/bubbles](https://github.com/mritd/bubbles): Some general-purpose
  bubbles. Inputs with validation, menu selection, a modified progressbar, and
  so on.

If you’ve built a Bubble you think should be listed here,
[let us know](mailto:vt100@charm.sh).


## License

[MIT](https://github.com/charmbracelet/teaparty/raw/master/LICENSE)


***

Part of [Charm](https://charm.sh).

<a href="https://charm.sh/"><img alt="The Charm logo" src="https://stuff.charm.sh/charm-badge-unrounded.jpg" width="400"></a>

Charm热爱开源 • Charm loves open source