context passing

client/client.go

@@ -1,6 +1,7 @@
 package client
 
 import (
+	"context"
 	"image"
 	"sync"
 
@@ -21,6 +22,8 @@ type client struct {
 	app    fyne.App
 	window fyne.Window
 
+	loadReportFunc func(uint)
+
 	world  *world.World
 	drawer *world.GGDrawer
 	raster *canvas.Raster
@@ -63,7 +66,7 @@ type client struct {
 	hits []world.Hit
 }
 
-func NewClient(conn connector.UIConnector, app fyne.App, settings mc.Settings) (mc.Client, error) {
+func NewClient(ctx context.Context, conn connector.UIConnector, app fyne.App, settings mc.Settings) (mc.Client, error) {
 	e := &client{
 		conn:   conn,
 		app:    app,
@@ -77,6 +80,8 @@ func NewClient(conn connector.UIConnector, app fyne.App, settings mc.Settings) (
 		hits:            make([]world.Hit, 5),
 	}
 
+	e.loadReportFunc = func(t uint) { e.loadReport(ctx, t) }
+
 	e.drawer = &world.GGDrawer{DC: nil}
 
 	e.raster = canvas.NewRaster(func(wPx, hPx int) image.Image {
@@ -96,8 +101,8 @@ func NewClient(conn connector.UIConnector, app fyne.App, settings mc.Settings) (
 	return e, nil
 }
 
-func (e *client) loadReport(t uint) {
+func (e *client) loadReport(ctx context.Context, t uint) {
-	e.conn.FetchReport("GAME_ID", t, func(r report.Report, err error) {
+	e.conn.FetchReport(ctx, "GAME_ID", t, func(r report.Report, err error) {
 		if err != nil {
 			e.handlerError(err)
 		} else {

client/cmd/ui/main.go

@@ -1,11 +1,13 @@
 package main
 
 import (
+	"context"
 	"errors"
 	"fmt"
 	"galaxy/client"
 	mc "galaxy/model/client"
 	"os"
+	"os/signal"
 
 	"fyne.io/fyne/v2/app"
 )
@@ -27,7 +29,11 @@ func main() {
 	settings := mc.Settings{
 		StoragePath: ".",
 	}
-	c, err := client.NewClient(nil, app, settings)
+
+	ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt)
+	defer cancel()
+
+	c, err := client.NewClient(ctx, nil, app, settings)
 	if err != nil {
 		return
 	}

connector/connector.go

@@ -1,6 +1,7 @@
 package connector
 
 import (
+	"context"
 	model "galaxy/model/client"
 	"galaxy/model/report"
 )
@@ -25,7 +26,7 @@ type UIConnector interface {
 	// FetchReport asynchronously requests from backend server a [report.Report] for a given [model.GameID] and turn number.
 	// Passed callback func will will accept non-nil error in case of I/O or decoding errors occuried,
 	// otherwise callback func accepts loaded [report.Report].
-	FetchReport(model.GameID, uint, func(report.Report, error))
+	FetchReport(context.Context, model.GameID, uint, func(report.Report, error))
 }
 
 type VersionInfo struct {

loader/cmd/main.go

@@ -29,7 +29,7 @@ func main() {
 	defer cancel()
 
 	app := app.New()
-	l, err := loader.NewLoader(app, nil)
+	l, err := loader.NewLoader(ctx, app, nil)
 	if err != nil {
 		return
 	}

loader/loader.go

@@ -12,17 +12,17 @@ import (
 	"fyne.io/fyne/v2"
 )
 
-type ClientInit func(connector.UIConnector, fyne.App, mc.Settings) (mc.Client, error)
+type ClientInit func(context.Context, connector.UIConnector, fyne.App, mc.Settings) (mc.Client, error)
 
 type loader struct {
 	conn connector.Connector
 	cli  mc.Client
 }
 
-func NewLoader(app fyne.App, conn connector.Connector) (*loader, error) {
+func NewLoader(ctx context.Context, app fyne.App, conn connector.Connector) (*loader, error) {
 	app.Storage().List()
 	settings := mc.Settings{}
-	cli, err := loadClientPlugin(conn, app, settings, "./client.so", "NewClient")
+	cli, err := loadClientPlugin(ctx, conn, app, settings, "./client.so", "NewClient")
 	if err != nil {
 		return nil, err
 	}
@@ -61,7 +61,7 @@ func (l *loader) backgroundLoop(ctx context.Context, final <-chan struct{}) {
 
 // loadClientPlugin loads a Client implementation from a shared object (.so) file at the specified path.
 // It calls the constructor function by name, passing the necessary dependencies, and returns the initialized Client.
-func loadClientPlugin(conn connector.UIConnector, app fyne.App, s mc.Settings, path, name string) (mc.Client, error) {
+func loadClientPlugin(ctx context.Context, conn connector.UIConnector, app fyne.App, s mc.Settings, path, name string) (mc.Client, error) {
 	if path == "" {
 		return nil, errors.New("no plugin path given")
 	}
@@ -81,5 +81,5 @@ func loadClientPlugin(conn connector.UIConnector, app fyne.App, s mc.Settings, p
 		return nil, fmt.Errorf("unexpected type %T; want %T", sym, initializerPtr)
 	}
 
-	return (*initializerPtr)(conn, app, s)
+	return (*initializerPtr)(ctx, conn, app, s)
 }