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lazygit/pkg/gui/view_helpers.go
Jesse Duffield 2fac2f9f1f WIP
2020-08-23 14:29:18 +10:00

394 lines
9.2 KiB
Go

package gui
import (
"fmt"
"sort"
"strings"
"sync"
"github.com/jesseduffield/gocui"
"github.com/jesseduffield/lazygit/pkg/utils"
"github.com/spkg/bom"
)
func (gui *Gui) getCyclableWindows() []string {
return []string{"status", "files", "branches", "commits", "stash"}
}
// models/views that we can refresh
const (
COMMITS = iota
BRANCHES
FILES
STASH
REFLOG
TAGS
REMOTES
STATUS
)
const (
SYNC = iota // wait until everything is done before returning
ASYNC // return immediately, allowing each independent thing to update itself
BLOCK_UI // wrap code in an update call to ensure UI updates all at once and keybindings aren't executed till complete
)
type refreshOptions struct {
then func()
scope []int // e.g. []int{COMMITS, BRANCHES}. Leave empty to refresh everything
mode int // one of SYNC (default), ASYNC, and BLOCK_UI
}
func intArrToMap(arr []int) map[int]bool {
output := map[int]bool{}
for _, el := range arr {
output[el] = true
}
return output
}
func (gui *Gui) refreshSidePanels(options refreshOptions) error {
wg := sync.WaitGroup{}
f := func() {
var scopeMap map[int]bool
if len(options.scope) == 0 {
scopeMap = intArrToMap([]int{COMMITS, BRANCHES, FILES, STASH, REFLOG, TAGS, REMOTES, STATUS})
} else {
scopeMap = intArrToMap(options.scope)
}
if scopeMap[COMMITS] || scopeMap[BRANCHES] || scopeMap[REFLOG] {
wg.Add(1)
func() {
if options.mode == ASYNC {
go gui.refreshCommits()
} else {
gui.refreshCommits()
}
wg.Done()
}()
}
if scopeMap[FILES] {
wg.Add(1)
func() {
if options.mode == ASYNC {
go gui.refreshFiles()
} else {
gui.refreshFiles()
}
wg.Done()
}()
}
if scopeMap[STASH] {
wg.Add(1)
func() {
if options.mode == ASYNC {
go gui.refreshStashEntries()
} else {
gui.refreshStashEntries()
}
wg.Done()
}()
}
if scopeMap[TAGS] {
wg.Add(1)
func() {
if options.mode == ASYNC {
go gui.refreshTags()
} else {
gui.refreshTags()
}
wg.Done()
}()
}
if scopeMap[REMOTES] {
wg.Add(1)
func() {
if options.mode == ASYNC {
go gui.refreshRemotes()
} else {
gui.refreshRemotes()
}
wg.Done()
}()
}
wg.Wait()
gui.refreshStatus()
if options.then != nil {
options.then()
}
}
if options.mode == BLOCK_UI {
gui.g.Update(func(g *gocui.Gui) error {
f()
return nil
})
} else {
f()
}
return nil
}
func (gui *Gui) resetOrigin(v *gocui.View) error {
_ = v.SetCursor(0, 0)
return v.SetOrigin(0, 0)
}
func (gui *Gui) cleanString(s string) string {
output := string(bom.Clean([]byte(s)))
return utils.NormalizeLinefeeds(output)
}
func (gui *Gui) setViewContent(v *gocui.View, s string) {
v.Clear()
fmt.Fprint(v, gui.cleanString(s))
}
// renderString resets the origin of a view and sets its content
func (gui *Gui) renderString(viewName, s string) {
gui.g.Update(func(*gocui.Gui) error {
return gui.renderStringSync(viewName, s)
})
}
func (gui *Gui) renderStringSync(viewName, s string) error {
v, err := gui.g.View(viewName)
if err != nil {
return nil // return gracefully if view has been deleted
}
if err := v.SetOrigin(0, 0); err != nil {
return err
}
if err := v.SetCursor(0, 0); err != nil {
return err
}
gui.setViewContent(v, s)
return nil
}
func (gui *Gui) optionsMapToString(optionsMap map[string]string) string {
optionsArray := make([]string, 0)
for key, description := range optionsMap {
optionsArray = append(optionsArray, key+": "+description)
}
sort.Strings(optionsArray)
return strings.Join(optionsArray, ", ")
}
func (gui *Gui) renderOptionsMap(optionsMap map[string]string) error {
gui.renderString("options", gui.optionsMapToString(optionsMap))
return nil
}
// TODO: refactor properly
// i'm so sorry but had to add this getBranchesView
func (gui *Gui) getFilesView() *gocui.View {
v, _ := gui.g.View("files")
return v
}
func (gui *Gui) getCommitsView() *gocui.View {
v, _ := gui.g.View("commits")
return v
}
func (gui *Gui) getCommitMessageView() *gocui.View {
v, _ := gui.g.View("commitMessage")
return v
}
func (gui *Gui) getBranchesView() *gocui.View {
v, _ := gui.g.View("branches")
return v
}
func (gui *Gui) getMainView() *gocui.View {
v, _ := gui.g.View("main")
return v
}
func (gui *Gui) getSecondaryView() *gocui.View {
v, _ := gui.g.View("secondary")
return v
}
func (gui *Gui) getStashView() *gocui.View {
v, _ := gui.g.View("stash")
return v
}
func (gui *Gui) getCommitFilesView() *gocui.View {
v, _ := gui.g.View("commitFiles")
return v
}
func (gui *Gui) getMenuView() *gocui.View {
v, _ := gui.g.View("menu")
return v
}
func (gui *Gui) getSearchView() *gocui.View {
v, _ := gui.g.View("search")
return v
}
func (gui *Gui) getStatusView() *gocui.View {
v, _ := gui.g.View("status")
return v
}
func (gui *Gui) getConfirmationView() *gocui.View {
v, _ := gui.g.View("confirmation")
return v
}
func (gui *Gui) trimmedContent(v *gocui.View) string {
return strings.TrimSpace(v.Buffer())
}
func (gui *Gui) currentViewName() string {
currentView := gui.g.CurrentView()
if currentView == nil {
return ""
}
return currentView.Name()
}
func (gui *Gui) resizeCurrentPopupPanel() error {
v := gui.g.CurrentView()
if v == nil {
return nil
}
if gui.isPopupPanel(v.Name()) {
return gui.resizePopupPanel(v)
}
return nil
}
func (gui *Gui) resizePopupPanel(v *gocui.View) error {
// If the confirmation panel is already displayed, just resize the width,
// otherwise continue
content := v.Buffer()
x0, y0, x1, y1 := gui.getConfirmationPanelDimensions(v.Wrap, content)
vx0, vy0, vx1, vy1 := v.Dimensions()
if vx0 == x0 && vy0 == y0 && vx1 == x1 && vy1 == y1 {
return nil
}
gui.Log.Info(gui.Tr.SLocalize("resizingPopupPanel"))
_, err := gui.g.SetView(v.Name(), x0, y0, x1, y1, 0)
return err
}
func (gui *Gui) changeSelectedLine(line *int, total int, change int) {
// TODO: find out why we're doing this
if *line == -1 {
return
}
if *line+change < 0 {
*line = 0
} else if *line+change >= total {
*line = total - 1
} else {
*line += change
}
}
func (gui *Gui) refreshSelectedLine(line *int, total int) {
if *line == -1 && total > 0 {
*line = 0
} else if total-1 < *line {
*line = total - 1
}
}
func (gui *Gui) renderDisplayStrings(v *gocui.View, displayStrings [][]string) {
gui.g.Update(func(g *gocui.Gui) error {
list := utils.RenderDisplayStrings(displayStrings)
v.Clear()
fmt.Fprint(v, list)
return nil
})
}
func (gui *Gui) renderPanelOptions() error {
currentView := gui.g.CurrentView()
switch currentView.Name() {
case "menu":
return gui.renderMenuOptions()
case "main":
if gui.State.MainContext == "merging" {
return gui.renderMergeOptions()
}
}
return gui.renderGlobalOptions()
}
func (gui *Gui) renderGlobalOptions() error {
return gui.renderOptionsMap(map[string]string{
fmt.Sprintf("%s/%s", gui.getKeyDisplay("universal.scrollUpMain"), gui.getKeyDisplay("universal.scrollDownMain")): gui.Tr.SLocalize("scroll"),
fmt.Sprintf("%s %s %s %s", gui.getKeyDisplay("universal.prevBlock"), gui.getKeyDisplay("universal.nextBlock"), gui.getKeyDisplay("universal.prevItem"), gui.getKeyDisplay("universal.nextItem")): gui.Tr.SLocalize("navigate"),
gui.getKeyDisplay("universal.return"): gui.Tr.SLocalize("cancel"),
gui.getKeyDisplay("universal.quit"): gui.Tr.SLocalize("quit"),
gui.getKeyDisplay("universal.optionMenu"): gui.Tr.SLocalize("menu"),
"1-5": gui.Tr.SLocalize("jump"),
})
}
func (gui *Gui) isPopupPanel(viewName string) bool {
return viewName == "commitMessage" || viewName == "credentials" || viewName == "confirmation" || viewName == "menu"
}
func (gui *Gui) popupPanelFocused() bool {
return gui.isPopupPanel(gui.currentViewName())
}
// often gocui wants functions in the form `func(g *gocui.Gui, v *gocui.View) error`
// but sometimes we just have a function that returns an error, so this is a
// convenience wrapper to give gocui what it wants.
func (gui *Gui) wrappedHandler(f func() error) func(g *gocui.Gui, v *gocui.View) error {
return func(g *gocui.Gui, v *gocui.View) error {
return f()
}
}
// secondaryViewFocused tells us whether it appears that the secondary view is focused. The view is actually never focused for real: we just swap the main and secondary views and then you're still focused on the main view so that we can give you access to all its keybindings for free. I will probably regret this design decision soon enough.
func (gui *Gui) secondaryViewFocused() bool {
return gui.State.Panels.LineByLine != nil && gui.State.Panels.LineByLine.SecondaryFocused
}
func (gui *Gui) clearEditorView(v *gocui.View) {
v.Clear()
_ = v.SetCursor(0, 0)
_ = v.SetOrigin(0, 0)
}
func (gui *Gui) onViewTabClick(viewName string, tabIndex int) error {
context := gui.ViewTabContextMap[viewName][tabIndex].contexts[0]
return gui.switchContext(context)
}
func (gui *Gui) handleNextTab(g *gocui.Gui, v *gocui.View) error {
return gui.onViewTabClick(
v.Name(),
utils.ModuloWithWrap(v.TabIndex+1, len(v.Tabs)),
)
}
func (gui *Gui) handlePrevTab(g *gocui.Gui, v *gocui.View) error {
return gui.onViewTabClick(
v.Name(),
utils.ModuloWithWrap(v.TabIndex-1, len(v.Tabs)),
)
}