Use Go 1.16 embed (#140)

* Use go 1.16 embed

* Upgrade go version to 1.16 in go.mod

* Fix index.html not showing on launch

* Update CI to use go 1.16

.github/workflows/ci.yml

@@ -11,9 +11,9 @@ jobs:
           sudo apt-get update
           sudo apt-get install -yqq google-chrome-stable
       - name: Install Go
-        uses: actions/setup-go@v1
+        uses: actions/setup-go@v2
         with:
-          go-version: ${{ matrix.go-version }}
+          go-version: '1.16'
       - name: Run tests
         run: go test -v -race ./...
       - name: Build examples

README.md

@@ -28,7 +28,6 @@
 * Call arbitrary JavaScript code from Go
 * Asynchronous flow between UI and main app in both languages (async/await and Goroutines)
 * Supports loading web UI from the local web server or via data URL
-* Supports embedding all assets into a single binary
 * Supports testing your app with the UI in the headless mode
 * Supports multiple app windows
 * Supports packaging and branding (e.g. custom app icons). Packaging for all
@@ -70,8 +69,7 @@ fmt.Println(m)
 
 <p align="center"><img src="examples/counter/counter.gif" /></p>
 
-Also, see [examples](examples) for more details about binding functions, embedding
-assets and packaging binaries.
+Also, see [examples](examples) for more details about binding functions and packaging binaries.
 
 ## Hello World
 

examples/counter/main.go

@@ -1,8 +1,7 @@
-//go:generate go run -tags generate gen.go
-
 package main
 
 import (
+	"embed"
 	"fmt"
 	"log"
 	"net"
@@ -15,6 +14,9 @@ import (
 	"github.com/zserge/lorca"
 )
 
+//go:embed www
+var fs embed.FS
+
 // Go types that are bound to the UI must be thread-safe, because each binding
 // is executed in its own goroutine. In this simple case we may use atomic
 // operations, but for more complex cases one should use proper synchronization.
@@ -65,8 +67,8 @@ func main() {
 		log.Fatal(err)
 	}
 	defer ln.Close()
-	go http.Serve(ln, http.FileServer(FS))
-	ui.Load(fmt.Sprintf("http://%s", ln.Addr()))
+	go http.Serve(ln, http.FileServer(http.FS(fs)))
+	ui.Load(fmt.Sprintf("http://%s/www", ln.Addr()))
 
 	// You may use console.log to debug your JS code, it will be printed via
 	// log.Println(). Also exceptions are printed in a similar manner.

go.mod

@@ -1,5 +1,5 @@
 module github.com/zserge/lorca
 
-go 1.13
+go 1.16
 
 require golang.org/x/net v0.0.0-20200222125558-5a598a2470a0