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mirror of https://github.com/jesseduffield/lazygit.git synced 2025-01-24 05:36:19 +02:00
Stefan Haller 7ccb871a45 Bump gocui
... and import stefanhaller's tcell fork for real rather than just replacing it

This solves the problem that people trying to
"go install github.com/jesseduffield/lazygit@latest" would get the error

go: github.com/jesseduffield/lazygit@latest (in github.com/jesseduffield/lazygit@v0.40.0):
  The go.mod file for the module providing named packages contains one or
  more replace directives. It must not contain directives that would cause
  it to be interpreted differently than if it were the main module.
2023-08-06 12:03:23 +02:00

679 lines
15 KiB
Go

// Copyright 2023 The TCell Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use file except in compliance with the License.
// You may obtain a copy of the license at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//go:build js && wasm
// +build js,wasm
package tcell
import (
"errors"
"strings"
"sync"
"syscall/js"
"unicode/utf8"
)
func NewTerminfoScreen() (Screen, error) {
t := &wScreen{}
t.fallback = make(map[rune]string)
return t, nil
}
type wScreen struct {
w, h int
style Style
cells CellBuffer
running bool
clear bool
flagsPresent bool
pasteEnabled bool
mouseFlags MouseFlags
cursorStyle CursorStyle
quit chan struct{}
evch chan Event
fallback map[rune]string
sync.Mutex
}
func (t *wScreen) Init() error {
t.w, t.h = 80, 24 // default for html as of now
t.evch = make(chan Event, 10)
t.quit = make(chan struct{})
t.Lock()
t.running = true
t.style = StyleDefault
t.cells.Resize(t.w, t.h)
t.Unlock()
js.Global().Set("onKeyEvent", js.FuncOf(t.onKeyEvent))
return nil
}
func (t *wScreen) Fini() {
close(t.quit)
}
func (t *wScreen) SetStyle(style Style) {
t.Lock()
t.style = style
t.Unlock()
}
func (t *wScreen) Clear() {
t.Fill(' ', t.style)
}
func (t *wScreen) Fill(r rune, style Style) {
t.Lock()
t.cells.Fill(r, style)
t.Unlock()
}
func (t *wScreen) SetContent(x, y int, mainc rune, combc []rune, style Style) {
t.Lock()
t.cells.SetContent(x, y, mainc, combc, style)
t.Unlock()
}
func (t *wScreen) GetContent(x, y int) (rune, []rune, Style, int) {
t.Lock()
mainc, combc, style, width := t.cells.GetContent(x, y)
t.Unlock()
return mainc, combc, style, width
}
func (t *wScreen) SetCell(x, y int, style Style, ch ...rune) {
if len(ch) > 0 {
t.SetContent(x, y, ch[0], ch[1:], style)
} else {
t.SetContent(x, y, ' ', nil, style)
}
}
// paletteColor gives a more natural palette color actually matching
// typical XTerm. We might in the future want to permit styling these
// via CSS.
var palette = map[Color]int32{
ColorBlack: 0x000000,
ColorMaroon: 0xcd0000,
ColorGreen: 0x00cd00,
ColorOlive: 0xcdcd00,
ColorNavy: 0x0000ee,
ColorPurple: 0xcd00cd,
ColorTeal: 0x00cdcd,
ColorSilver: 0xe5e5e5,
ColorGray: 0x7f7f7f,
ColorRed: 0xff0000,
ColorLime: 0x00ff00,
ColorYellow: 0xffff00,
ColorBlue: 0x5c5cff,
ColorFuchsia: 0xff00ff,
ColorAqua: 0x00ffff,
ColorWhite: 0xffffff,
}
func paletteColor(c Color) int32 {
if (c.IsRGB()) {
return int32(c & 0xffffff);
}
if (c >= ColorBlack && c <= ColorWhite) {
return palette[c]
}
return c.Hex()
}
func (t *wScreen) drawCell(x, y int) int {
mainc, combc, style, width := t.cells.GetContent(x, y)
if !t.cells.Dirty(x, y) {
return width
}
if style == StyleDefault {
style = t.style
}
fg, bg := paletteColor(style.fg), paletteColor(style.bg)
if (fg == -1) {
fg = 0xe5e5e5;
}
if (bg == -1) {
bg = 0x000000;
}
var combcarr []interface{} = make([]interface{}, len(combc))
for i, c := range combc {
combcarr[i] = c
}
t.cells.SetDirty(x, y, false)
js.Global().Call("drawCell", x, y, mainc, combcarr, fg, bg, int(style.attrs))
return width
}
func (t *wScreen) ShowCursor(x, y int) {
t.Lock()
js.Global().Call("showCursor", x, y)
t.Unlock()
}
func (t *wScreen) SetCursorStyle(cs CursorStyle) {
t.Lock()
js.Global().Call("setCursorStyle", curStyleClasses[cs])
t.Unlock()
}
func (t *wScreen) HideCursor() {
t.ShowCursor(-1, -1)
}
func (t *wScreen) Show() {
t.Lock()
t.resize()
t.draw()
t.Unlock()
}
func (t *wScreen) clearScreen() {
js.Global().Call("clearScreen", t.style.fg.Hex(), t.style.bg.Hex())
t.clear = false
}
func (t *wScreen) draw() {
if t.clear {
t.clearScreen()
}
for y := 0; y < t.h; y++ {
for x := 0; x < t.w; x++ {
width := t.drawCell(x, y)
x += width - 1
}
}
js.Global().Call("show")
}
func (t *wScreen) EnableMouse(flags ...MouseFlags) {
var f MouseFlags
flagsPresent := false
for _, flag := range flags {
f |= flag
flagsPresent = true
}
if !flagsPresent {
f = MouseMotionEvents | MouseDragEvents | MouseButtonEvents
}
t.Lock()
t.mouseFlags = f
t.enableMouse(f)
t.Unlock()
}
func (t *wScreen) enableMouse(f MouseFlags) {
if f&MouseButtonEvents != 0 {
js.Global().Set("onMouseClick", js.FuncOf(t.onMouseEvent))
} else {
js.Global().Set("onMouseClick", js.FuncOf(t.unset))
}
if f&MouseDragEvents != 0 || f&MouseMotionEvents != 0 {
js.Global().Set("onMouseMove", js.FuncOf(t.onMouseEvent))
} else {
js.Global().Set("onMouseMove", js.FuncOf(t.unset))
}
}
func (t *wScreen) DisableMouse() {
t.Lock()
t.mouseFlags = 0
t.enableMouse(0)
t.Unlock()
}
func (t *wScreen) EnablePaste() {
t.Lock()
t.pasteEnabled = true
t.enablePasting(true)
t.Unlock()
}
func (t *wScreen) DisablePaste() {
t.Lock()
t.pasteEnabled = false
t.enablePasting(false)
t.Unlock()
}
func (t *wScreen) enablePasting(on bool) {
if on {
js.Global().Set("onPaste", js.FuncOf(t.onPaste))
} else {
js.Global().Set("onPaste", js.FuncOf(t.unset))
}
}
func (t *wScreen) Size() (int, int) {
t.Lock()
w, h := t.w, t.h
t.Unlock()
return w, h
}
// resize does nothing, as asking the web window to resize
// without a specified width or height will cause no change.
func (t *wScreen) resize() {}
func (t *wScreen) Colors() int {
return 16777216 // 256 ^ 3
}
func (t *wScreen) ChannelEvents(ch chan<- Event, quit <-chan struct{}) {
defer close(ch)
for {
select {
case <-quit:
return
case <-t.quit:
return
case ev := <-t.evch:
select {
case <-quit:
return
case <-t.quit:
return
case ch <- ev:
}
}
}
}
func (t *wScreen) PollEvent() Event {
select {
case <-t.quit:
return nil
case ev := <-t.evch:
return ev
}
}
func (t *wScreen) HasPendingEvent() bool {
return len(t.evch) > 0
}
func (t *wScreen) PostEventWait(ev Event) {
t.evch <- ev
}
func (t *wScreen) PostEvent(ev Event) error {
select {
case t.evch <- ev:
return nil
default:
return ErrEventQFull
}
}
func (t *wScreen) clip(x, y int) (int, int) {
w, h := t.cells.Size()
if x < 0 {
x = 0
}
if y < 0 {
y = 0
}
if x > w-1 {
x = w - 1
}
if y > h-1 {
y = h - 1
}
return x, y
}
func (t *wScreen) onMouseEvent(this js.Value, args []js.Value) interface{} {
mod := ModNone
button := ButtonNone
switch args[2].Int() {
case 0:
if t.mouseFlags&MouseMotionEvents == 0 {
// don't want this event! is a mouse motion event, but user has asked not.
return nil
}
button = ButtonNone
case 1:
button = Button1
case 2:
button = Button3 // Note we prefer to treat right as button 2
case 3:
button = Button2 // And the middle button as button 3
}
if args[3].Bool() { // mod shift
mod |= ModShift
}
if args[4].Bool() { // mod alt
mod |= ModAlt
}
if args[5].Bool() { // mod ctrl
mod |= ModCtrl
}
t.PostEventWait(NewEventMouse(args[0].Int(), args[1].Int(), button, mod))
return nil
}
func (t *wScreen) onKeyEvent(this js.Value, args []js.Value) interface{} {
key := args[0].String()
// don't accept any modifier keys as their own
if key == "Control" || key == "Alt" || key == "Meta" || key == "Shift" {
return nil
}
mod := ModNone
if args[1].Bool() { // mod shift
mod |= ModShift
}
if args[2].Bool() { // mod alt
mod |= ModAlt
}
if args[3].Bool() { // mod ctrl
mod |= ModCtrl
}
if args[4].Bool() { // mod meta
mod |= ModMeta
}
// check for special case of Ctrl + key
if mod == ModCtrl {
if k, ok := WebKeyNames["Ctrl-"+strings.ToLower(key)]; ok {
t.PostEventWait(NewEventKey(k, 0, mod))
return nil
}
}
// next try function keys
if k, ok := WebKeyNames[key]; ok {
t.PostEventWait(NewEventKey(k, 0, mod))
return nil
}
// finally try normal, printable chars
r, _ := utf8.DecodeRuneInString(key)
t.PostEventWait(NewEventKey(KeyRune, r, mod))
return nil
}
func (t *wScreen) onPaste(this js.Value, args []js.Value) interface{} {
t.PostEventWait(NewEventPaste(args[0].Bool()))
return nil
}
// unset is a dummy function for js when we want nothing to
// happen when javascript calls a function (for example, when
// mouse input is disabled, when onMouseEvent() is called from
// js, it redirects here and does nothing).
func (t *wScreen) unset(this js.Value, args []js.Value) interface{} {
return nil
}
func (t *wScreen) Sync() {
t.Lock()
t.resize()
t.clear = true
t.cells.Invalidate()
t.draw()
t.Unlock()
}
func (t *wScreen) CharacterSet() string {
return "UTF-8"
}
func (t *wScreen) RegisterRuneFallback(orig rune, fallback string) {
t.Lock()
t.fallback[orig] = fallback
t.Unlock()
}
func (t *wScreen) UnregisterRuneFallback(orig rune) {
t.Lock()
delete(t.fallback, orig)
t.Unlock()
}
func (t *wScreen) CanDisplay(r rune, checkFallbacks bool) bool {
if utf8.ValidRune(r) {
return true
}
if !checkFallbacks {
return false
}
if _, ok := t.fallback[r]; ok {
return true
}
return false
}
func (t *wScreen) HasMouse() bool {
return true
}
func (t *wScreen) HasKey(k Key) bool {
return true
}
func (t *wScreen) SetSize(w, h int) {
if w == t.w && h == t.h {
return
}
t.cells.Invalidate()
t.cells.Resize(w, h)
js.Global().Call("resize", w, h)
t.w, t.h = w, h
t.PostEvent(NewEventResize(w, h))
}
func (t *wScreen) Resize(int, int, int, int) {}
// Suspend simply pauses all input and output, and clears the screen.
// There isn't a "default terminal" to go back to.
func (t *wScreen) Suspend() error {
t.Lock()
if !t.running {
t.Unlock()
return nil
}
t.running = false
t.clearScreen()
t.enableMouse(0)
t.enablePasting(false)
js.Global().Set("onKeyEvent", js.FuncOf(t.unset)) // stop keypresses
return nil
}
func (t *wScreen) Resume() error {
t.Lock()
if t.running {
return errors.New("already engaged")
}
t.running = true
t.enableMouse(t.mouseFlags)
t.enablePasting(t.pasteEnabled)
js.Global().Set("onKeyEvent", js.FuncOf(t.onKeyEvent))
t.Unlock()
return nil
}
func (t *wScreen) Beep() error {
js.Global().Call("beep")
return nil
}
// WebKeyNames maps string names reported from HTML
// (KeyboardEvent.key) to tcell accepted keys.
var WebKeyNames = map[string]Key{
"Enter": KeyEnter,
"Backspace": KeyBackspace,
"Tab": KeyTab,
"Backtab": KeyBacktab,
"Escape": KeyEsc,
"Backspace2": KeyBackspace2,
"Delete": KeyDelete,
"Insert": KeyInsert,
"ArrowUp": KeyUp,
"ArrowDown": KeyDown,
"ArrowLeft": KeyLeft,
"ArrowRight": KeyRight,
"Home": KeyHome,
"End": KeyEnd,
"UpLeft": KeyUpLeft, // not supported by HTML
"UpRight": KeyUpRight, // not supported by HTML
"DownLeft": KeyDownLeft, // not supported by HTML
"DownRight": KeyDownRight, // not supported by HTML
"Center": KeyCenter,
"PgDn": KeyPgDn,
"PgUp": KeyPgUp,
"Clear": KeyClear,
"Exit": KeyExit,
"Cancel": KeyCancel,
"Pause": KeyPause,
"Print": KeyPrint,
"F1": KeyF1,
"F2": KeyF2,
"F3": KeyF3,
"F4": KeyF4,
"F5": KeyF5,
"F6": KeyF6,
"F7": KeyF7,
"F8": KeyF8,
"F9": KeyF9,
"F10": KeyF10,
"F11": KeyF11,
"F12": KeyF12,
"F13": KeyF13,
"F14": KeyF14,
"F15": KeyF15,
"F16": KeyF16,
"F17": KeyF17,
"F18": KeyF18,
"F19": KeyF19,
"F20": KeyF20,
"F21": KeyF21,
"F22": KeyF22,
"F23": KeyF23,
"F24": KeyF24,
"F25": KeyF25,
"F26": KeyF26,
"F27": KeyF27,
"F28": KeyF28,
"F29": KeyF29,
"F30": KeyF30,
"F31": KeyF31,
"F32": KeyF32,
"F33": KeyF33,
"F34": KeyF34,
"F35": KeyF35,
"F36": KeyF36,
"F37": KeyF37,
"F38": KeyF38,
"F39": KeyF39,
"F40": KeyF40,
"F41": KeyF41,
"F42": KeyF42,
"F43": KeyF43,
"F44": KeyF44,
"F45": KeyF45,
"F46": KeyF46,
"F47": KeyF47,
"F48": KeyF48,
"F49": KeyF49,
"F50": KeyF50,
"F51": KeyF51,
"F52": KeyF52,
"F53": KeyF53,
"F54": KeyF54,
"F55": KeyF55,
"F56": KeyF56,
"F57": KeyF57,
"F58": KeyF58,
"F59": KeyF59,
"F60": KeyF60,
"F61": KeyF61,
"F62": KeyF62,
"F63": KeyF63,
"F64": KeyF64,
"Ctrl-a": KeyCtrlA, // not reported by HTML- need to do special check
"Ctrl-b": KeyCtrlB, // not reported by HTML- need to do special check
"Ctrl-c": KeyCtrlC, // not reported by HTML- need to do special check
"Ctrl-d": KeyCtrlD, // not reported by HTML- need to do special check
"Ctrl-e": KeyCtrlE, // not reported by HTML- need to do special check
"Ctrl-f": KeyCtrlF, // not reported by HTML- need to do special check
"Ctrl-g": KeyCtrlG, // not reported by HTML- need to do special check
"Ctrl-j": KeyCtrlJ, // not reported by HTML- need to do special check
"Ctrl-k": KeyCtrlK, // not reported by HTML- need to do special check
"Ctrl-l": KeyCtrlL, // not reported by HTML- need to do special check
"Ctrl-n": KeyCtrlN, // not reported by HTML- need to do special check
"Ctrl-o": KeyCtrlO, // not reported by HTML- need to do special check
"Ctrl-p": KeyCtrlP, // not reported by HTML- need to do special check
"Ctrl-q": KeyCtrlQ, // not reported by HTML- need to do special check
"Ctrl-r": KeyCtrlR, // not reported by HTML- need to do special check
"Ctrl-s": KeyCtrlS, // not reported by HTML- need to do special check
"Ctrl-t": KeyCtrlT, // not reported by HTML- need to do special check
"Ctrl-u": KeyCtrlU, // not reported by HTML- need to do special check
"Ctrl-v": KeyCtrlV, // not reported by HTML- need to do special check
"Ctrl-w": KeyCtrlW, // not reported by HTML- need to do special check
"Ctrl-x": KeyCtrlX, // not reported by HTML- need to do special check
"Ctrl-y": KeyCtrlY, // not reported by HTML- need to do special check
"Ctrl-z": KeyCtrlZ, // not reported by HTML- need to do special check
"Ctrl- ": KeyCtrlSpace, // not reported by HTML- need to do special check
"Ctrl-_": KeyCtrlUnderscore, // not reported by HTML- need to do special check
"Ctrl-]": KeyCtrlRightSq, // not reported by HTML- need to do special check
"Ctrl-\\": KeyCtrlBackslash, // not reported by HTML- need to do special check
"Ctrl-^": KeyCtrlCarat, // not reported by HTML- need to do special check
}
var curStyleClasses = map[CursorStyle]string{
CursorStyleDefault: "cursor-blinking-block",
CursorStyleBlinkingBlock: "cursor-blinking-block",
CursorStyleSteadyBlock: "cursor-steady-block",
CursorStyleBlinkingUnderline: "cursor-blinking-underline",
CursorStyleSteadyUnderline: "cursor-steady-underline",
CursorStyleBlinkingBar: "cursor-blinking-bar",
CursorStyleSteadyBar: "cursor-steady-bar",
}