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gui.go
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gui.go
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package gui
import (
"fmt"
"sort"
"sync"
"github.com/isacikgoz/gitbatch/core/git"
"github.com/isacikgoz/gitbatch/core/job"
"github.com/isacikgoz/gitbatch/core/load"
"github.com/jroimartin/gocui"
log "github.com/sirupsen/logrus"
)
// Gui struct hold the gocui struct along with the gui's state, also keybindings
// are tied with this struct in order to render those in different occasions
type Gui struct {
g *gocui.Gui
KeyBindings []*KeyBinding
State guiState
mutex *sync.Mutex
order Layout
}
// guiState struct holds the repositories, directiories, mode and queue of the
// gui object. These values are not static
type guiState struct {
Repositories []*git.Repository
Directories []string
Mode mode
Queue *job.JobQueue
FailoverQueue *job.JobQueue
targetBranch string
totalBranches []*branchCountMap
}
// this struct encapsulates the name and title of a view. the name of a view is
// passed around so much it is added so that I don't need to wirte names again
type viewFeature struct {
Name string
Title string
}
// mode of the gui
type mode struct {
ModeID ModeID
DisplayString string
CommandString string
}
type branchCountMap struct {
BranchName string
Count int
}
// ModeID is the mode indicator for the gui
type ModeID string
// Layout tells the gui how to order views
type Layout int
const (
// FetchMode puts the gui in fetch state
FetchMode ModeID = "fetch"
// PullMode puts the gui in pull state
PullMode = "pull"
// MergeMode puts the gui in merge state
MergeMode = "merge"
// CheckoutMode checkout selected repositories
CheckoutMode = "checkout"
overview Layout = 0
focus Layout = 1
)
var (
mainViewFeature = viewFeature{Name: "main", Title: " Matched Repositories "}
mainViewFrameFeature = viewFeature{Name: "mainframe", Title: " Matched Repositories "}
loadingViewFeature = viewFeature{Name: "loading", Title: " Loading in Progress "}
branchViewFeature = viewFeature{Name: "branch", Title: " Branches "}
batchBranchViewFeature = viewFeature{Name: "batch-branch", Title: " Select Branch "}
suggestBranchViewFeature = viewFeature{Name: "suggest-branch", Title: " Enter New Branch Name "}
remoteViewFeature = viewFeature{Name: "remotes", Title: " Remotes "}
remoteBranchViewFeature = viewFeature{Name: "remotebranches", Title: " Remote Branches "}
commitViewFeature = viewFeature{Name: "commits", Title: " Commits "}
scheduleViewFeature = viewFeature{Name: "schedule", Title: " Schedule "}
keybindingsViewFeature = viewFeature{Name: "keybindings", Title: " Keybindings "}
diffViewFeature = viewFeature{Name: "diff", Title: " Diff Detail "}
cheatSheetViewFeature = viewFeature{Name: "cheatsheet", Title: " Application Controls "}
errorViewFeature = viewFeature{Name: "error", Title: " Error "}
dynamicViewFeature = viewFeature{Name: "dynamic", Title: " Dynamic "}
stashViewFeature = viewFeature{Name: "stash", Title: " Stash "}
fetchMode = mode{ModeID: FetchMode, DisplayString: "Fetch", CommandString: "fetch"}
pullMode = mode{ModeID: PullMode, DisplayString: "Pull", CommandString: "pull"}
mergeMode = mode{ModeID: MergeMode, DisplayString: "Merge", CommandString: "merge"}
checkoutMode = mode{ModeID: CheckoutMode, DisplayString: "Checkout", CommandString: "checkout"}
modes = []mode{fetchMode, pullMode, mergeMode}
// mainViews = []viewFeature{mainViewFeature, commitViewFeature, dynamicViewFeature, remoteViewFeature, remoteBranchViewFeature, branchViewFeature, stashViewFeature}
loaded = make(chan bool)
)
// NewGui creates a Gui opject and fill it's state related entites
func NewGui(mode string, directoies []string) (*Gui, error) {
initialState := guiState{
Directories: directoies,
Mode: fetchMode,
Queue: job.CreateJobQueue(),
FailoverQueue: job.CreateJobQueue(),
}
gui := &Gui{
State: initialState,
mutex: &sync.Mutex{},
}
for _, m := range modes {
if string(m.ModeID) == mode {
gui.State.Mode = m
break
}
}
return gui, nil
}
// Run function runs the main loop with initial values
func (gui *Gui) Run() error {
g, err := gocui.NewGui(gocui.OutputNormal)
if err != nil {
return err
}
defer g.Close()
gui.g = g
g.Highlight = true
g.SelFgColor = gocui.ColorGreen
g.InputEsc = true
g.SetManagerFunc(gui.layout)
// load repositories in background asynchronously
go load.AsyncLoad(gui.State.Directories, gui.loadRepository, loaded)
if err := gui.generateKeybindings(); err != nil {
log.Error("Keybindings could not be created.")
return err
}
if err := gui.keybindings(g); err != nil {
log.Error("Keybindings could not be set.")
return err
}
// mainViews = overviewViews
if err := g.MainLoop(); err != nil && err != gocui.ErrQuit {
log.Error("Error in the main loop. " + err.Error())
return err
}
return nil
}
// add repository to gui's own slice and register listeners
func (gui *Gui) loadRepository(r *git.Repository) {
rs := gui.State.Repositories
// insertion sort implementation
index := sort.Search(len(rs), func(i int) bool { return git.Less(r, rs[i]) })
rs = append(rs, &git.Repository{})
copy(rs[index+1:], rs[index:])
rs[index] = r
// add listener
r.On(git.RepositoryUpdated, gui.repositoryUpdated)
r.On(git.BranchUpdated, gui.branchUpdated)
// update gui
gui.repositoryUpdated(nil)
gui.renderTitle()
// take pointer back
gui.State.Repositories = rs
go func() {
if <-loaded {
v, err := gui.g.View(mainViewFrameFeature.Name)
if err != nil {
log.Warn(err.Error())
return
}
v.Title = mainViewFrameFeature.Title + fmt.Sprintf("(%d) ", len(gui.State.Repositories))
}
}()
}
// render title with loaded repository count
func (gui *Gui) renderTitle() error {
v, err := gui.g.View(mainViewFrameFeature.Name)
if err != nil {
log.Warn(err.Error())
return err
}
v.Title = mainViewFrameFeature.Title + fmt.Sprintf("(%d/%d) ", len(gui.State.Repositories), len(gui.State.Directories))
return nil
}
// set the layout and create views with their default size, name etc. values
// TODO: window sizes can be handled better
func (gui *Gui) layout(g *gocui.Gui) error {
if gui.order == overview {
return gui.overviewLayout(g)
} else if gui.order == focus {
return gui.focusLayout(g)
}
return nil
}
// quit from the gui and end its loop
func (gui *Gui) quit(g *gocui.Gui, v *gocui.View) error {
return gocui.ErrQuit
}