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mirror of https://github.com/jesseduffield/lazygit.git synced 2024-11-30 09:16:47 +02:00
lazygit/gui.go
2018-08-07 14:01:41 +10:00

298 lines
9.6 KiB
Go

package main
import (
// "io"
// "io/ioutil"
"log"
"runtime"
"strings"
"time"
// "strings"
"github.com/golang-collections/collections/stack"
"github.com/jesseduffield/gocui"
)
// OverlappingEdges determines if panel edges overlap
var OverlappingEdges = false
type stateType struct {
GitFiles []GitFile
Branches []Branch
Commits []Commit
StashEntries []StashEntry
PreviousView string
HasMergeConflicts bool
ConflictIndex int
ConflictTop bool
Conflicts []conflict
EditHistory *stack.Stack
}
type conflict struct {
start int
middle int
end int
}
var state = stateType{
GitFiles: make([]GitFile, 0),
PreviousView: "files",
Commits: make([]Commit, 0),
StashEntries: make([]StashEntry, 0),
ConflictIndex: 0,
ConflictTop: true,
Conflicts: make([]conflict, 0),
EditHistory: stack.New(),
}
func scrollUpMain(g *gocui.Gui, v *gocui.View) error {
mainView, _ := g.View("main")
ox, oy := mainView.Origin()
if oy >= 1 {
return mainView.SetOrigin(ox, oy-1)
}
return nil
}
func scrollDownMain(g *gocui.Gui, v *gocui.View) error {
mainView, _ := g.View("main")
ox, oy := mainView.Origin()
if oy < len(mainView.BufferLines()) {
return mainView.SetOrigin(ox, oy+1)
}
return nil
}
func handleRefresh(g *gocui.Gui, v *gocui.View) error {
return refreshSidePanels(g)
}
// Binding - a keybinding mapping a key and modifier to a handler. The keypress
// is only handled if the given view has focus, or handled globally if the view
// is ""
type Binding struct {
ViewName string
Handler func(*gocui.Gui, *gocui.View) error
Key interface{} // FIXME: find out how to get `gocui.Key | rune`
Modifier gocui.Modifier
}
func keybindings(g *gocui.Gui) error {
bindings := []Binding{
Binding{ViewName: "", Key: gocui.KeyArrowLeft, Modifier: gocui.ModNone, Handler: previousView},
Binding{ViewName: "", Key: gocui.KeyArrowRight, Modifier: gocui.ModNone, Handler: nextView},
Binding{ViewName: "", Key: gocui.KeyTab, Modifier: gocui.ModNone, Handler: nextView},
Binding{ViewName: "", Key: 'q', Modifier: gocui.ModNone, Handler: quit},
Binding{ViewName: "", Key: gocui.KeyCtrlC, Modifier: gocui.ModNone, Handler: quit},
Binding{ViewName: "", Key: gocui.KeyArrowDown, Modifier: gocui.ModNone, Handler: cursorDown},
Binding{ViewName: "", Key: gocui.KeyArrowUp, Modifier: gocui.ModNone, Handler: cursorUp},
Binding{ViewName: "", Key: gocui.KeyPgup, Modifier: gocui.ModNone, Handler: scrollUpMain},
Binding{ViewName: "", Key: gocui.KeyPgdn, Modifier: gocui.ModNone, Handler: scrollDownMain},
Binding{ViewName: "", Key: 'P', Modifier: gocui.ModNone, Handler: pushFiles},
Binding{ViewName: "", Key: 'p', Modifier: gocui.ModNone, Handler: pullFiles},
Binding{ViewName: "", Key: 'R', Modifier: gocui.ModNone, Handler: handleRefresh},
Binding{ViewName: "files", Key: 'c', Modifier: gocui.ModNone, Handler: handleCommitPress},
Binding{ViewName: "files", Key: gocui.KeySpace, Modifier: gocui.ModNone, Handler: handleFilePress},
Binding{ViewName: "files", Key: 'd', Modifier: gocui.ModNone, Handler: handleFileRemove},
Binding{ViewName: "files", Key: 'm', Modifier: gocui.ModNone, Handler: handleSwitchToMerge},
Binding{ViewName: "files", Key: 'o', Modifier: gocui.ModNone, Handler: handleFileOpen},
Binding{ViewName: "files", Key: 's', Modifier: gocui.ModNone, Handler: handleSublimeFileOpen},
Binding{ViewName: "files", Key: 'v', Modifier: gocui.ModNone, Handler: handleVsCodeFileOpen},
Binding{ViewName: "files", Key: 'i', Modifier: gocui.ModNone, Handler: handleIgnoreFile},
Binding{ViewName: "files", Key: 'r', Modifier: gocui.ModNone, Handler: handleRefreshFiles},
Binding{ViewName: "files", Key: 'S', Modifier: gocui.ModNone, Handler: handleStashSave},
Binding{ViewName: "files", Key: 'a', Modifier: gocui.ModNone, Handler: handleAbortMerge},
Binding{ViewName: "main", Key: gocui.KeyArrowUp, Modifier: gocui.ModNone, Handler: handleSelectTop},
Binding{ViewName: "main", Key: gocui.KeyArrowDown, Modifier: gocui.ModNone, Handler: handleSelectBottom},
Binding{ViewName: "main", Key: gocui.KeyEsc, Modifier: gocui.ModNone, Handler: handleEscapeMerge},
Binding{ViewName: "main", Key: gocui.KeySpace, Modifier: gocui.ModNone, Handler: handlePickHunk},
Binding{ViewName: "main", Key: 'b', Modifier: gocui.ModNone, Handler: handlePickBothHunks},
Binding{ViewName: "main", Key: gocui.KeyArrowLeft, Modifier: gocui.ModNone, Handler: handleSelectPrevConflict},
Binding{ViewName: "main", Key: gocui.KeyArrowRight, Modifier: gocui.ModNone, Handler: handleSelectNextConflict},
Binding{ViewName: "main", Key: 'z', Modifier: gocui.ModNone, Handler: handlePopFileSnapshot},
Binding{ViewName: "branches", Key: gocui.KeySpace, Modifier: gocui.ModNone, Handler: handleBranchPress},
Binding{ViewName: "branches", Key: 'c', Modifier: gocui.ModNone, Handler: handleCheckoutByName},
Binding{ViewName: "branches", Key: 'F', Modifier: gocui.ModNone, Handler: handleForceCheckout},
Binding{ViewName: "branches", Key: 'n', Modifier: gocui.ModNone, Handler: handleNewBranch},
Binding{ViewName: "branches", Key: 'm', Modifier: gocui.ModNone, Handler: handleMerge},
Binding{ViewName: "commits", Key: 's', Modifier: gocui.ModNone, Handler: handleCommitSquashDown},
Binding{ViewName: "commits", Key: 'r', Modifier: gocui.ModNone, Handler: handleRenameCommit},
Binding{ViewName: "commits", Key: 'g', Modifier: gocui.ModNone, Handler: handleResetToCommit},
Binding{ViewName: "stash", Key: gocui.KeySpace, Modifier: gocui.ModNone, Handler: handleStashApply},
Binding{ViewName: "stash", Key: 'k', Modifier: gocui.ModNone, Handler: handleStashPop},
Binding{ViewName: "stash", Key: 'd', Modifier: gocui.ModNone, Handler: handleStashDrop},
}
for _, binding := range bindings {
if err := g.SetKeybinding(binding.ViewName, binding.Key, binding.Modifier, binding.Handler); err != nil {
return err
}
}
return nil
}
func layout(g *gocui.Gui) error {
g.Highlight = true
g.SelFgColor = gocui.ColorWhite | gocui.AttrBold
if runtime.GOOS != "windows" {
g.FgColor = gocui.ColorBlack
}
width, height := g.Size()
leftSideWidth := width / 3
statusFilesBoundary := 2
filesBranchesBoundary := 2 * height / 5 // height - 20
commitsBranchesBoundary := 3 * height / 5 // height - 10
commitsStashBoundary := height - 5 // height - 5
minimumHeight := 16
panelSpacing := 1
if OverlappingEdges {
panelSpacing = 0
}
if height < minimumHeight {
v, err := g.SetView("limit", 0, 0, width-1, height-1, 0)
if err != nil {
if err != gocui.ErrUnknownView {
return err
}
v.Title = "Not enough space to render panels"
v.Wrap = true
}
return nil
}
g.DeleteView("limit")
optionsTop := height - 2
// hiding options if there's not enough space
if height < 30 {
optionsTop = height - 1
}
v, err := g.SetView("main", leftSideWidth+panelSpacing, 0, width-1, optionsTop, gocui.LEFT)
if err != nil {
if err != gocui.ErrUnknownView {
return err
}
v.Title = "Diff"
v.Wrap = true
v.FgColor = gocui.ColorWhite
}
if v, err := g.SetView("status", 0, 0, leftSideWidth, statusFilesBoundary, gocui.BOTTOM|gocui.RIGHT); err != nil {
if err != gocui.ErrUnknownView {
return err
}
v.Title = "Status"
v.FgColor = gocui.ColorWhite
}
filesView, err := g.SetView("files", 0, statusFilesBoundary+panelSpacing, leftSideWidth, filesBranchesBoundary, gocui.TOP|gocui.BOTTOM)
if err != nil {
if err != gocui.ErrUnknownView {
return err
}
filesView.Highlight = true
filesView.Title = "Files"
v.FgColor = gocui.ColorWhite
}
if v, err := g.SetView("branches", 0, filesBranchesBoundary+panelSpacing, leftSideWidth, commitsBranchesBoundary, gocui.TOP|gocui.BOTTOM); err != nil {
if err != gocui.ErrUnknownView {
return err
}
v.Title = "Branches"
v.FgColor = gocui.ColorWhite
}
if v, err := g.SetView("commits", 0, commitsBranchesBoundary+panelSpacing, leftSideWidth, commitsStashBoundary, gocui.TOP|gocui.BOTTOM); err != nil {
if err != gocui.ErrUnknownView {
return err
}
v.Title = "Commits"
v.FgColor = gocui.ColorWhite
}
if v, err := g.SetView("stash", 0, commitsStashBoundary+panelSpacing, leftSideWidth, optionsTop, gocui.TOP|gocui.RIGHT); err != nil {
if err != gocui.ErrUnknownView {
return err
}
v.Title = "Stash"
v.FgColor = gocui.ColorWhite
}
if v, err := g.SetView("options", -1, optionsTop, width, optionsTop+2, 0); err != nil {
if err != gocui.ErrUnknownView {
return err
}
v.BgColor = gocui.ColorDefault
v.FgColor = gocui.ColorBlue
v.Frame = false
v.Title = "Options"
// these are only called once
handleFileSelect(g, filesView)
refreshFiles(g)
refreshBranches(g)
refreshCommits(g)
refreshStashEntries(g)
nextView(g, nil)
}
return nil
}
func fetch(g *gocui.Gui) {
gitFetch()
refreshStatus(g)
}
func updateLoader(g *gocui.Gui) {
if confirmationView, _ := g.View("confirmation"); confirmationView != nil {
content := trimmedContent(confirmationView)
if strings.Contains(content, "...") {
staticContent := strings.Split(content, "...")[0] + "..."
renderString(g, "confirmation", staticContent+" "+loader())
}
}
}
func run() {
g, err := gocui.NewGui(gocui.OutputNormal, OverlappingEdges)
if err != nil {
log.Panicln(err)
}
defer g.Close()
// periodically fetching to check for upstream differences
go func() {
for range time.Tick(time.Second * 60) {
fetch(g)
}
}()
go func() {
for range time.Tick(time.Millisecond * 10) {
updateLoader(g)
}
}()
g.SetManagerFunc(layout)
if err := keybindings(g); err != nil {
log.Panicln(err)
}
if err := g.MainLoop(); err != nil && err != gocui.ErrQuit {
log.Panicln(err)
}
}
func quit(g *gocui.Gui, v *gocui.View) error {
return gocui.ErrQuit
}