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gui.go
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gui.go
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package main
import (
// "io"
// "io/ioutil"
"log"
"strings"
"time"
// "strings"
"github.com/golang-collections/collections/stack"
"github.com/jesseduffield/gocui"
)
// PanelSpacing determines the distance between adjacent panels. Set to 0 for
// overlapping edges (experimental)
var PanelSpacing = 0
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)
}
func keybindings(g *gocui.Gui) error {
if err := g.SetKeybinding("", gocui.KeyArrowRight, gocui.ModNone, nextView); err != nil {
return err
}
if err := g.SetKeybinding("", gocui.KeyTab, gocui.ModNone, nextView); err != nil {
return err
}
if err := g.SetKeybinding("", gocui.KeyArrowLeft, gocui.ModNone, previousView); err != nil {
return err
}
if err := g.SetKeybinding("", 'q', gocui.ModNone, quit); err != nil {
return err
}
if err := g.SetKeybinding("", gocui.KeyCtrlC, gocui.ModNone, quit); err != nil {
return err
}
if err := g.SetKeybinding("", gocui.KeyArrowDown, gocui.ModNone, cursorDown); err != nil {
return err
}
if err := g.SetKeybinding("", gocui.KeyArrowUp, gocui.ModNone, cursorUp); err != nil {
return err
}
if err := g.SetKeybinding("", gocui.KeyPgup, gocui.ModNone, scrollUpMain); err != nil {
return err
}
if err := g.SetKeybinding("", gocui.KeyPgdn, gocui.ModNone, scrollDownMain); err != nil {
return err
}
if err := g.SetKeybinding("", 'P', gocui.ModNone, pushFiles); err != nil {
return err
}
if err := g.SetKeybinding("", 'p', gocui.ModNone, pullFiles); err != nil {
return err
}
if err := g.SetKeybinding("", 'R', gocui.ModNone, handleRefresh); err != nil {
return err
}
if err := g.SetKeybinding("files", 'c', gocui.ModNone, handleCommitPress); err != nil {
return err
}
if err := g.SetKeybinding("files", gocui.KeySpace, gocui.ModNone, handleFilePress); err != nil {
return err
}
if err := g.SetKeybinding("files", 'd', gocui.ModNone, handleFileRemove); err != nil {
return err
}
if err := g.SetKeybinding("files", 'm', gocui.ModNone, handleSwitchToMerge); err != nil {
return err
}
if err := g.SetKeybinding("files", 'o', gocui.ModNone, handleFileOpen); err != nil {
return err
}
if err := g.SetKeybinding("files", 's', gocui.ModNone, handleSublimeFileOpen); err != nil {
return err
}
if err := g.SetKeybinding("files", 'i', gocui.ModNone, handleIgnoreFile); err != nil {
return err
}
if err := g.SetKeybinding("files", 'r', gocui.ModNone, handleRefreshFiles); err != nil {
return err
}
if err := g.SetKeybinding("files", 'S', gocui.ModNone, handleStashSave); err != nil {
return err
}
if err := g.SetKeybinding("files", 'a', gocui.ModNone, handleAbortMerge); err != nil {
return err
}
if err := g.SetKeybinding("main", gocui.KeyArrowUp, gocui.ModNone, handleSelectTop); err != nil {
return err
}
if err := g.SetKeybinding("main", gocui.KeyEsc, gocui.ModNone, handleEscapeMerge); err != nil {
return err
}
if err := g.SetKeybinding("main", gocui.KeyArrowDown, gocui.ModNone, handleSelectBottom); err != nil {
return err
}
if err := g.SetKeybinding("main", gocui.KeySpace, gocui.ModNone, handlePickHunk); err != nil {
return err
}
if err := g.SetKeybinding("main", 'b', gocui.ModNone, handlePickBothHunks); err != nil {
return err
}
if err := g.SetKeybinding("main", gocui.KeyArrowLeft, gocui.ModNone, handleSelectPrevConflict); err != nil {
return err
}
if err := g.SetKeybinding("main", gocui.KeyArrowRight, gocui.ModNone, handleSelectNextConflict); err != nil {
return err
}
if err := g.SetKeybinding("main", 'z', gocui.ModNone, handlePopFileSnapshot); err != nil {
return err
}
if err := g.SetKeybinding("branches", gocui.KeySpace, gocui.ModNone, handleBranchPress); err != nil {
return err
}
if err := g.SetKeybinding("branches", 'c', gocui.ModNone, handleCheckoutByName); err != nil {
return err
}
if err := g.SetKeybinding("branches", 'F', gocui.ModNone, handleForceCheckout); err != nil {
return err
}
if err := g.SetKeybinding("branches", 'n', gocui.ModNone, handleNewBranch); err != nil {
return err
}
if err := g.SetKeybinding("branches", 'm', gocui.ModNone, handleMerge); err != nil {
return err
}
if err := g.SetKeybinding("commits", 's', gocui.ModNone, handleCommitSquashDown); err != nil {
return err
}
if err := g.SetKeybinding("commits", 'r', gocui.ModNone, handleRenameCommit); err != nil {
return err
}
if err := g.SetKeybinding("commits", 'g', gocui.ModNone, handleResetToCommit); err != nil {
return err
}
if err := g.SetKeybinding("stash", gocui.KeySpace, gocui.ModNone, handleStashApply); err != nil {
return err
}
// TODO: come up with a better keybinding (p/P used for pushing/pulling which
// I'd like to be global. Perhaps all global keybindings should use a modifier
// like command? But then there's gonna be hotkey conflicts with the terminal
if err := g.SetKeybinding("stash", 'k', gocui.ModNone, handleStashPop); err != nil {
return err
}
if err := g.SetKeybinding("stash", 'd', gocui.ModNone, handleStashDrop); err != nil {
return err
}
return nil
}
func layout(g *gocui.Gui) error {
g.Highlight = true
g.SelFgColor = gocui.AttrBold
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
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
} else {
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
}
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"
}
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"
}
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"
}
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"
}
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"
}
if v, err := g.SetView("options", -1, optionsTop, width, optionsTop+2, 0); err != nil {
if err != gocui.ErrUnknownView {
return err
}
v.BgColor = 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)
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
}