Split off External applications from main library

External applications now accept containers which function as the
frontend where the ExtApplication functions as the backend. Containers
execute within their own engine and have their own context and are
destroyed when released.

1 files changed, 73 insertions, 0 deletions

diff --git a/ethereal/ui/html_container.go b/ethereal/ui/html_container.go
new file mode 100644
index 000000000..8e3ef0fc7
--- /dev/null
+++ b/ethereal/ui/html_container.go
@@ -0,0 +1,73 @@
+package ethui
+
+import (
+	"errors"
+	"github.com/ethereum/eth-go/ethchain"
+	"github.com/ethereum/eth-go/ethutil"
+	"github.com/go-qml/qml"
+	"math/big"
+	"path/filepath"
+)
+
+type HtmlApplication struct {
+	win     *qml.Window
+	webView qml.Object
+	engine  *qml.Engine
+	lib     *UiLib
+	path    string
+}
+
+func NewHtmlApplication(path string, lib *UiLib) *HtmlApplication {
+	engine := qml.NewEngine()
+
+	return &HtmlApplication{engine: engine, lib: lib, path: path}
+
+}
+
+func (app *HtmlApplication) Create() error {
+	component, err := app.engine.LoadFile(app.lib.AssetPath("qml/webapp.qml"))
+	if err != nil {
+		return err
+	}
+
+	if filepath.Ext(app.path) == "eth" {
+		return errors.New("Ethereum package not yet supported")
+
+		// TODO
+		ethutil.OpenPackage(app.path)
+	}
+
+	win := component.CreateWindow(nil)
+	win.Set("url", app.path)
+	webView := win.ObjectByName("webView")
+
+	app.win = win
+	app.webView = webView
+
+	return nil
+}
+
+func (app *HtmlApplication) Engine() *qml.Engine {
+	return app.engine
+}
+
+func (app *HtmlApplication) Window() *qml.Window {
+	return app.win
+}
+
+func (app *HtmlApplication) NewBlock(block *ethchain.Block) {
+	b := &QBlock{Number: int(block.BlockInfo().Number), Hash: ethutil.Hex(block.Hash())}
+	app.webView.Call("onNewBlockCb", b)
+}
+
+func (app *HtmlApplication) ObjectChanged(stateObject *ethchain.StateObject) {
+	app.webView.Call("onObjectChangeCb", NewQStateObject(stateObject))
+}
+
+func (app *HtmlApplication) StorageChanged(stateObject *ethchain.StateObject, addr []byte, value *big.Int) {
+	app.webView.Call("onStorageChangeCb", nil)
+}
+
+func (app *HtmlApplication) Destroy() {
+	app.engine.Destroy()
+}