mirror of
https://github.com/jesseduffield/lazygit.git
synced 2024-12-12 11:15:00 +02:00
614 lines
17 KiB
Go
614 lines
17 KiB
Go
package gui
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import (
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"sync"
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// "io"
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// "io/ioutil"
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"io/ioutil"
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"os"
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"os/exec"
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"strings"
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"time"
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"github.com/go-errors/errors"
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// "strings"
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"github.com/fatih/color"
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"github.com/golang-collections/collections/stack"
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"github.com/jesseduffield/gocui"
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"github.com/jesseduffield/lazygit/pkg/commands"
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"github.com/jesseduffield/lazygit/pkg/config"
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"github.com/jesseduffield/lazygit/pkg/i18n"
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"github.com/jesseduffield/lazygit/pkg/updates"
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"github.com/sirupsen/logrus"
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)
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// OverlappingEdges determines if panel edges overlap
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var OverlappingEdges = false
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// SentinelErrors are the errors that have special meaning and need to be checked
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// by calling functions. The less of these, the better
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type SentinelErrors struct {
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ErrSubProcess error
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ErrNoFiles error
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ErrSwitchRepo error
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}
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// GenerateSentinelErrors makes the sentinel errors for the gui. We're defining it here
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// because we can't do package-scoped errors with localization, and also because
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// it seems like package-scoped variables are bad in general
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// https://dave.cheney.net/2017/06/11/go-without-package-scoped-variables
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// In the future it would be good to implement some of the recommendations of
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// that article. For now, if we don't need an error to be a sentinel, we will just
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// define it inline. This has implications for error messages that pop up everywhere
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// in that we'll be duplicating the default values. We may need to look at
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// having a default localisation bundle defined, and just using keys-only when
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// localising things in the code.
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func (gui *Gui) GenerateSentinelErrors() {
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gui.Errors = SentinelErrors{
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ErrSubProcess: errors.New(gui.Tr.SLocalize("RunningSubprocess")),
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ErrNoFiles: errors.New(gui.Tr.SLocalize("NoChangedFiles")),
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ErrSwitchRepo: errors.New("switching repo"),
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}
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}
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// Teml is short for template used to make the required map[string]interface{} shorter when using gui.Tr.SLocalize and gui.Tr.TemplateLocalize
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type Teml i18n.Teml
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// Gui wraps the gocui Gui object which handles rendering and events
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type Gui struct {
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g *gocui.Gui
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Log *logrus.Entry
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GitCommand *commands.GitCommand
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OSCommand *commands.OSCommand
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SubProcess *exec.Cmd
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State guiState
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Config config.AppConfigurer
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Tr *i18n.Localizer
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Errors SentinelErrors
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Updater *updates.Updater
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statusManager *statusManager
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credentials credentials
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waitForIntro sync.WaitGroup
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}
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// for now the staging panel state, unlike the other panel states, is going to be
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// non-mutative, so that we don't accidentally end up
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// with mismatches of data. We might change this in the future
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type stagingPanelState struct {
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SelectedLine int
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StageableLines []int
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HunkStarts []int
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Diff string
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}
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type mergingPanelState struct {
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ConflictIndex int
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ConflictTop bool
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Conflicts []commands.Conflict
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EditHistory *stack.Stack
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}
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type filePanelState struct {
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SelectedLine int
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}
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type branchPanelState struct {
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SelectedLine int
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}
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type commitPanelState struct {
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SelectedLine int
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}
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type stashPanelState struct {
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SelectedLine int
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}
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type menuPanelState struct {
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SelectedLine int
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}
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type panelStates struct {
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Files *filePanelState
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Branches *branchPanelState
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Commits *commitPanelState
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Stash *stashPanelState
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Menu *menuPanelState
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Staging *stagingPanelState
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Merging *mergingPanelState
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}
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type guiState struct {
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Files []*commands.File
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Branches []*commands.Branch
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Commits []*commands.Commit
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StashEntries []*commands.StashEntry
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PreviousView string
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Platform commands.Platform
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Updating bool
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Panels *panelStates
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WorkingTreeState string // one of "merging", "rebasing", "normal"
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Contexts map[string]string
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}
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// NewGui builds a new gui handler
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func NewGui(log *logrus.Entry, gitCommand *commands.GitCommand, oSCommand *commands.OSCommand, tr *i18n.Localizer, config config.AppConfigurer, updater *updates.Updater) (*Gui, error) {
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initialState := guiState{
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Files: make([]*commands.File, 0),
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PreviousView: "files",
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Commits: make([]*commands.Commit, 0),
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StashEntries: make([]*commands.StashEntry, 0),
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Platform: *oSCommand.Platform,
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Panels: &panelStates{
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Files: &filePanelState{SelectedLine: -1},
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Branches: &branchPanelState{SelectedLine: 0},
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Commits: &commitPanelState{SelectedLine: -1},
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Stash: &stashPanelState{SelectedLine: -1},
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Menu: &menuPanelState{SelectedLine: 0},
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Merging: &mergingPanelState{
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ConflictIndex: 0,
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ConflictTop: true,
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Conflicts: []commands.Conflict{},
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EditHistory: stack.New(),
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},
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},
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}
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gui := &Gui{
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Log: log,
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GitCommand: gitCommand,
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OSCommand: oSCommand,
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State: initialState,
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Config: config,
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Tr: tr,
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Updater: updater,
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statusManager: &statusManager{},
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}
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gui.GenerateSentinelErrors()
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return gui, nil
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}
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func (gui *Gui) scrollUpMain(g *gocui.Gui, v *gocui.View) error {
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mainView, _ := g.View("main")
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ox, oy := mainView.Origin()
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if oy >= 1 {
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return mainView.SetOrigin(ox, oy-gui.Config.GetUserConfig().GetInt("gui.scrollHeight"))
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}
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return nil
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}
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func (gui *Gui) scrollDownMain(g *gocui.Gui, v *gocui.View) error {
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mainView, _ := g.View("main")
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ox, oy := mainView.Origin()
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y := oy
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if !gui.Config.GetUserConfig().GetBool("gui.scrollPastBottom") {
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_, sy := mainView.Size()
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y += sy
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}
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if y < len(mainView.BufferLines()) {
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return mainView.SetOrigin(ox, oy+gui.Config.GetUserConfig().GetInt("gui.scrollHeight"))
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}
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return nil
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}
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func (gui *Gui) handleRefresh(g *gocui.Gui, v *gocui.View) error {
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return gui.refreshSidePanels(g)
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}
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func max(a, b int) int {
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if a > b {
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return a
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}
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return b
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}
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// getFocusLayout returns a manager function for when view gain and lose focus
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func (gui *Gui) getFocusLayout() func(g *gocui.Gui) error {
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var focusedView *gocui.View
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return func(g *gocui.Gui) error {
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v := gui.g.CurrentView()
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if v != focusedView {
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if err := gui.onFocusChange(); err != nil {
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return err
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}
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if err := gui.onFocusLost(focusedView); err != nil {
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return err
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}
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if err := gui.onFocus(v); err != nil {
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return err
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}
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focusedView = v
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}
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return nil
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}
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}
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func (gui *Gui) onFocusChange() error {
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currentView := gui.g.CurrentView()
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for _, view := range gui.g.Views() {
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view.Highlight = view == currentView
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}
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return gui.setMainTitle()
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}
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func (gui *Gui) onFocusLost(v *gocui.View) error {
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if v == nil {
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return nil
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}
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if v.Name() == "branches" {
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if err := gui.renderListPanel(gui.getBranchesView(), gui.State.Branches); err != nil {
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return err
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}
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}
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gui.Log.Info(v.Name() + " focus lost")
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return nil
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}
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func (gui *Gui) onFocus(v *gocui.View) error {
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if v == nil {
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return nil
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}
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gui.Log.Info(v.Name() + " focus gained")
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return nil
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}
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// layout is called for every screen re-render e.g. when the screen is resized
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func (gui *Gui) layout(g *gocui.Gui) error {
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g.Highlight = true
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width, height := g.Size()
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version := gui.Config.GetVersion()
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leftSideWidth := width / 3
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statusFilesBoundary := 2
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filesBranchesBoundary := 2 * height / 5 // height - 20
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commitsBranchesBoundary := 3 * height / 5 // height - 10
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commitsStashBoundary := height - 5 // height - 5
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optionsVersionBoundary := width - max(len(version), 1)
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minimumHeight := 16
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minimumWidth := 10
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appStatus := gui.statusManager.getStatusString()
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appStatusOptionsBoundary := 0
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if appStatus != "" {
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appStatusOptionsBoundary = len(appStatus) + 2
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}
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panelSpacing := 1
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if OverlappingEdges {
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panelSpacing = 0
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}
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if height < minimumHeight || width < minimumWidth {
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v, err := g.SetView("limit", 0, 0, max(width-1, 2), max(height-1, 2), 0)
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if err != nil {
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if err.Error() != "unknown view" {
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return err
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}
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v.Title = gui.Tr.SLocalize("NotEnoughSpace")
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v.Wrap = true
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g.SetViewOnTop("limit")
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}
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return nil
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} else {
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_, _ = g.SetViewOnBottom("limit")
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}
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g.DeleteView("limit")
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optionsTop := height - 2
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// hiding options if there's not enough space
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if height < 30 {
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optionsTop = height - 1
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}
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v, err := g.SetView("main", leftSideWidth+panelSpacing, 0, width-1, optionsTop, gocui.LEFT)
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if err != nil {
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if err.Error() != "unknown view" {
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return err
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}
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v.Title = gui.Tr.SLocalize("DiffTitle")
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v.Wrap = true
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v.FgColor = gocui.ColorWhite
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}
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if v, err := g.SetView("status", 0, 0, leftSideWidth, statusFilesBoundary, gocui.BOTTOM|gocui.RIGHT); err != nil {
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if err.Error() != "unknown view" {
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return err
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}
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v.Title = gui.Tr.SLocalize("StatusTitle")
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v.FgColor = gocui.ColorWhite
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}
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filesView, err := g.SetView("files", 0, statusFilesBoundary+panelSpacing, leftSideWidth, filesBranchesBoundary, gocui.TOP|gocui.BOTTOM)
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if err != nil {
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if err.Error() != "unknown view" {
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return err
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}
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filesView.Highlight = true
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filesView.Title = gui.Tr.SLocalize("FilesTitle")
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v.FgColor = gocui.ColorWhite
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}
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branchesView, err := g.SetView("branches", 0, filesBranchesBoundary+panelSpacing, leftSideWidth, commitsBranchesBoundary, gocui.TOP|gocui.BOTTOM)
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if err != nil {
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if err.Error() != "unknown view" {
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return err
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}
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branchesView.Title = gui.Tr.SLocalize("BranchesTitle")
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branchesView.FgColor = gocui.ColorWhite
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}
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if v, err := g.SetView("commits", 0, commitsBranchesBoundary+panelSpacing, leftSideWidth, commitsStashBoundary, gocui.TOP|gocui.BOTTOM); err != nil {
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if err.Error() != "unknown view" {
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return err
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}
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v.Title = gui.Tr.SLocalize("CommitsTitle")
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v.FgColor = gocui.ColorWhite
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}
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if v, err := g.SetView("stash", 0, commitsStashBoundary+panelSpacing, leftSideWidth, optionsTop, gocui.TOP|gocui.RIGHT); err != nil {
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if err.Error() != "unknown view" {
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return err
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}
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v.Title = gui.Tr.SLocalize("StashTitle")
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v.FgColor = gocui.ColorWhite
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}
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if v, err := g.SetView("options", appStatusOptionsBoundary-1, optionsTop, optionsVersionBoundary-1, optionsTop+2, 0); err != nil {
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if err.Error() != "unknown view" {
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return err
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}
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v.Frame = false
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if v.FgColor, err = gui.GetOptionsPanelTextColor(); err != nil {
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return err
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}
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}
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if gui.getCommitMessageView() == nil {
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// doesn't matter where this view starts because it will be hidden
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if commitMessageView, err := g.SetView("commitMessage", 0, 0, width/2, height/2, 0); err != nil {
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if err.Error() != "unknown view" {
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return err
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}
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g.SetViewOnBottom("commitMessage")
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commitMessageView.Title = gui.Tr.SLocalize("CommitMessage")
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commitMessageView.FgColor = gocui.ColorWhite
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commitMessageView.Editable = true
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commitMessageView.Editor = gocui.EditorFunc(gui.simpleEditor)
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}
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}
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if check, _ := g.View("credentials"); check == nil {
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// doesn't matter where this view starts because it will be hidden
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if credentialsView, err := g.SetView("credentials", 0, 0, width/2, height/2, 0); err != nil {
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if err.Error() != "unknown view" {
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return err
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}
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_, err := g.SetViewOnBottom("credentials")
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if err != nil {
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return err
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}
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credentialsView.Title = gui.Tr.SLocalize("CredentialsUsername")
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credentialsView.FgColor = gocui.ColorWhite
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credentialsView.Editable = true
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credentialsView.Editor = gocui.EditorFunc(gui.simpleEditor)
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}
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}
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if appStatusView, err := g.SetView("appStatus", -1, optionsTop, width, optionsTop+2, 0); err != nil {
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if err.Error() != "unknown view" {
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return err
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}
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appStatusView.BgColor = gocui.ColorDefault
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appStatusView.FgColor = gocui.ColorCyan
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appStatusView.Frame = false
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if _, err := g.SetViewOnBottom("appStatus"); err != nil {
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return err
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}
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}
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if v, err := g.SetView("version", optionsVersionBoundary-1, optionsTop, width, optionsTop+2, 0); err != nil {
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if err.Error() != "unknown view" {
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return err
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}
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v.BgColor = gocui.ColorDefault
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v.FgColor = gocui.ColorGreen
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v.Frame = false
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if err := gui.renderString(g, "version", version); err != nil {
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return err
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}
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// these are only called once (it's a place to put all the things you want
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// to happen on startup after the screen is first rendered)
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gui.Updater.CheckForNewUpdate(gui.onBackgroundUpdateCheckFinish, false)
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if err := gui.updateRecentRepoList(); err != nil {
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return err
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}
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gui.waitForIntro.Done()
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if _, err := gui.g.SetCurrentView(filesView.Name()); err != nil {
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return err
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}
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if err := gui.refreshSidePanels(gui.g); err != nil {
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return err
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}
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if err := gui.switchFocus(g, nil, filesView); err != nil {
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return err
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}
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if gui.Config.GetUserConfig().GetString("reporting") == "undetermined" {
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if err := gui.promptAnonymousReporting(); err != nil {
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return err
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}
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}
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}
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listViews := map[*gocui.View]int{
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filesView: gui.State.Panels.Files.SelectedLine,
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branchesView: gui.State.Panels.Branches.SelectedLine,
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}
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for view, selectedLine := range listViews {
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// check if the selected line is now out of view and if so refocus it
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if err := gui.focusPoint(0, selectedLine, view); err != nil {
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return err
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}
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}
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// here is a good place log some stuff
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// if you download humanlog and do tail -f development.log | humanlog
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// this will let you see these branches as prettified json
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// gui.Log.Info(utils.AsJson(gui.State.Branches[0:4]))
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return gui.resizeCurrentPopupPanel(g)
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}
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func (gui *Gui) promptAnonymousReporting() error {
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return gui.createConfirmationPanel(gui.g, nil, gui.Tr.SLocalize("AnonymousReportingTitle"), gui.Tr.SLocalize("AnonymousReportingPrompt"), func(g *gocui.Gui, v *gocui.View) error {
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gui.waitForIntro.Done()
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return gui.Config.WriteToUserConfig("reporting", "on")
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}, func(g *gocui.Gui, v *gocui.View) error {
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gui.waitForIntro.Done()
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return gui.Config.WriteToUserConfig("reporting", "off")
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})
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}
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func (gui *Gui) fetch(g *gocui.Gui, v *gocui.View, canAskForCredentials bool) (unamePassOpend bool, err error) {
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unamePassOpend = false
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err = gui.GitCommand.Fetch(func(passOrUname string) string {
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unamePassOpend = true
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return gui.waitForPassUname(gui.g, v, passOrUname)
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}, canAskForCredentials)
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if canAskForCredentials && err != nil && strings.Contains(err.Error(), "exit status 128") {
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colorFunction := color.New(color.FgRed).SprintFunc()
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coloredMessage := colorFunction(strings.TrimSpace(gui.Tr.SLocalize("PassUnameWrong")))
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close := func(g *gocui.Gui, v *gocui.View) error {
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return nil
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}
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_ = gui.createConfirmationPanel(g, v, gui.Tr.SLocalize("Error"), coloredMessage, close, close)
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}
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gui.refreshStatus(g)
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return unamePassOpend, err
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}
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func (gui *Gui) renderAppStatus() error {
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appStatus := gui.statusManager.getStatusString()
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if appStatus != "" {
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return gui.renderString(gui.g, "appStatus", appStatus)
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}
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return nil
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}
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func (gui *Gui) renderGlobalOptions() error {
|
|
return gui.renderOptionsMap(map[string]string{
|
|
"PgUp/PgDn": gui.Tr.SLocalize("scroll"),
|
|
"← → ↑ ↓": gui.Tr.SLocalize("navigate"),
|
|
"esc/q": gui.Tr.SLocalize("close"),
|
|
"x": gui.Tr.SLocalize("menu"),
|
|
})
|
|
}
|
|
|
|
func (gui *Gui) goEvery(interval time.Duration, function func() error) {
|
|
go func() {
|
|
for range time.Tick(interval) {
|
|
function()
|
|
}
|
|
}()
|
|
}
|
|
|
|
// Run setup the gui with keybindings and start the mainloop
|
|
func (gui *Gui) Run() error {
|
|
g, err := gocui.NewGui(gocui.OutputNormal, OverlappingEdges)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer g.Close()
|
|
|
|
gui.g = g // TODO: always use gui.g rather than passing g around everywhere
|
|
|
|
if err := gui.SetColorScheme(); err != nil {
|
|
return err
|
|
}
|
|
|
|
if gui.Config.GetUserConfig().GetString("reporting") == "undetermined" {
|
|
gui.waitForIntro.Add(2)
|
|
} else {
|
|
gui.waitForIntro.Add(1)
|
|
}
|
|
|
|
go func() {
|
|
gui.waitForIntro.Wait()
|
|
isNew := gui.Config.GetIsNewRepo()
|
|
if !isNew {
|
|
time.After(60 * time.Second)
|
|
}
|
|
_, err := gui.fetch(g, g.CurrentView(), false)
|
|
if err != nil && strings.Contains(err.Error(), "exit status 128") && isNew {
|
|
_ = gui.createConfirmationPanel(g, g.CurrentView(), gui.Tr.SLocalize("NoAutomaticGitFetchTitle"), gui.Tr.SLocalize("NoAutomaticGitFetchBody"), nil, nil)
|
|
} else {
|
|
gui.goEvery(time.Second*60, func() error {
|
|
_, err := gui.fetch(gui.g, gui.g.CurrentView(), false)
|
|
return err
|
|
})
|
|
}
|
|
}()
|
|
gui.goEvery(time.Second*10, gui.refreshFiles)
|
|
gui.goEvery(time.Millisecond*50, gui.renderAppStatus)
|
|
|
|
g.SetManager(gocui.ManagerFunc(gui.layout), gocui.ManagerFunc(gui.getFocusLayout()))
|
|
|
|
if err = gui.keybindings(g); err != nil {
|
|
return err
|
|
}
|
|
|
|
err = g.MainLoop()
|
|
return err
|
|
}
|
|
|
|
// RunWithSubprocesses loops, instantiating a new gocui.Gui with each iteration
|
|
// if the error returned from a run is a ErrSubProcess, it runs the subprocess
|
|
// otherwise it handles the error, possibly by quitting the application
|
|
func (gui *Gui) RunWithSubprocesses() error {
|
|
for {
|
|
if err := gui.Run(); err != nil {
|
|
if err == gocui.ErrQuit {
|
|
break
|
|
} else if err == gui.Errors.ErrSwitchRepo {
|
|
continue
|
|
} else if err == gui.Errors.ErrSubProcess {
|
|
gui.SubProcess.Stdin = os.Stdin
|
|
gui.SubProcess.Stdout = os.Stdout
|
|
gui.SubProcess.Stderr = os.Stderr
|
|
gui.SubProcess.Run()
|
|
gui.SubProcess.Stdout = ioutil.Discard
|
|
gui.SubProcess.Stderr = ioutil.Discard
|
|
gui.SubProcess.Stdin = nil
|
|
gui.SubProcess = nil
|
|
} else {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (gui *Gui) quit(g *gocui.Gui, v *gocui.View) error {
|
|
if gui.State.Updating {
|
|
return gui.createUpdateQuitConfirmation(g, v)
|
|
}
|
|
if gui.Config.GetUserConfig().GetBool("confirmOnQuit") {
|
|
return gui.createConfirmationPanel(g, v, "", gui.Tr.SLocalize("ConfirmQuit"), func(g *gocui.Gui, v *gocui.View) error {
|
|
return gocui.ErrQuit
|
|
}, nil)
|
|
}
|
|
return gocui.ErrQuit
|
|
}
|