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.
This commit is contained in:
obscuren
parent
922974c760
commit
64c2550b31
175
ethereal/ui/ext_app.go
Normal file
175
ethereal/ui/ext_app.go
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@ -0,0 +1,175 @@
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package ethui
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import (
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"fmt"
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"github.com/ethereum/eth-go"
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"github.com/ethereum/eth-go/ethchain"
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"github.com/ethereum/eth-go/ethutil"
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"github.com/go-qml/qml"
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"math/big"
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)
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type AppContainer interface {
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Create() error
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Destroy()
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Window() *qml.Window
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Engine() *qml.Engine
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NewBlock(*ethchain.Block)
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ObjectChanged(*ethchain.StateObject)
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StorageChanged(*ethchain.StateObject, []byte, *big.Int)
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}
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type ExtApplication struct {
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*QEthereum
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blockChan chan ethutil.React
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changeChan chan ethutil.React
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quitChan chan bool
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container AppContainer
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lib *UiLib
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registeredEvents []string
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}
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func NewExtApplication(container AppContainer, lib *UiLib) *ExtApplication {
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app := &ExtApplication{
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NewQEthereum(lib.eth),
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make(chan ethutil.React, 1),
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make(chan ethutil.React, 1),
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make(chan bool),
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container,
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lib,
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nil,
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}
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return app
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}
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func (app *ExtApplication) run() {
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// Set the "eth" api on to the containers context
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context := app.container.Engine().Context()
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context.SetVar("eth", app)
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context.SetVar("ui", app.lib)
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err := app.container.Create()
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if err != nil {
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fmt.Println(err)
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return
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}
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// Call the main loop
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go app.mainLoop()
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// Subscribe to events
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reactor := app.lib.eth.Reactor()
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reactor.Subscribe("newBlock", app.blockChan)
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win := app.container.Window()
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win.Show()
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win.Wait()
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app.stop()
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}
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func (app *ExtApplication) stop() {
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// Clean up
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reactor := app.lib.eth.Reactor()
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reactor.Unsubscribe("newBlock", app.blockChan)
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for _, event := range app.registeredEvents {
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reactor.Unsubscribe(event, app.changeChan)
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}
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// Kill the main loop
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app.quitChan <- true
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close(app.blockChan)
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close(app.quitChan)
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close(app.changeChan)
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app.container.Destroy()
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}
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func (app *ExtApplication) mainLoop() {
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out:
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for {
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select {
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case <-app.quitChan:
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break out
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case block := <-app.blockChan:
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if block, ok := block.Resource.(*ethchain.Block); ok {
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app.container.NewBlock(block)
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}
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case object := <-app.changeChan:
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if stateObject, ok := object.Resource.(*ethchain.StateObject); ok {
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app.container.ObjectChanged(stateObject)
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} else if _, ok := object.Resource.(*big.Int); ok {
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//
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}
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}
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}
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}
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func (app *ExtApplication) Watch(addr, storageAddr string) {
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var event string
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if len(storageAddr) == 0 {
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event = "storage:" + string(ethutil.FromHex(addr)) + ":" + string(ethutil.FromHex(storageAddr))
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app.lib.eth.Reactor().Subscribe(event, app.changeChan)
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} else {
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event = "object:" + string(ethutil.FromHex(addr))
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app.lib.eth.Reactor().Subscribe(event, app.changeChan)
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}
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app.registeredEvents = append(app.registeredEvents, event)
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}
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type QEthereum struct {
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stateManager *ethchain.StateManager
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blockChain *ethchain.BlockChain
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txPool *ethchain.TxPool
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}
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func NewQEthereum(eth *eth.Ethereum) *QEthereum {
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return &QEthereum{
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eth.StateManager(),
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eth.BlockChain(),
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eth.TxPool(),
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}
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}
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func (lib *QEthereum) GetBlock(hexHash string) *QBlock {
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hash := ethutil.FromHex(hexHash)
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block := lib.blockChain.GetBlock(hash)
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return &QBlock{Number: int(block.BlockInfo().Number), Hash: ethutil.Hex(block.Hash())}
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}
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func (lib *QEthereum) GetKey() string {
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return ethutil.Hex(ethutil.Config.Db.GetKeys()[0].Address())
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}
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func (lib *QEthereum) GetStateObject(address string) *Contract {
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stateObject := lib.stateManager.ProcState().GetContract(ethutil.FromHex(address))
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if stateObject != nil {
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return NewContract(stateObject)
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}
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// See GetStorage for explanation on "nil"
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return NewContract(nil)
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}
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func (lib *QEthereum) Watch(addr, storageAddr string) {
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// lib.stateManager.Watch(ethutil.FromHex(addr), ethutil.FromHex(storageAddr))
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}
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func (lib *QEthereum) CreateTx(recipient, valueStr, gasStr, gasPriceStr, dataStr string) (string, error) {
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return lib.Transact(recipient, valueStr, gasStr, gasPriceStr, dataStr)
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}
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func (lib *QEthereum) Transact(recipient, valueStr, gasStr, gasPriceStr, dataStr string) (string, error) {
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return "", nil
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}
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73
ethereal/ui/html_container.go
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73
ethereal/ui/html_container.go
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@ -0,0 +1,73 @@
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package ethui
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import (
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"errors"
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"github.com/ethereum/eth-go/ethchain"
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"github.com/ethereum/eth-go/ethutil"
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"github.com/go-qml/qml"
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"math/big"
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"path/filepath"
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)
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type HtmlApplication struct {
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win *qml.Window
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webView qml.Object
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engine *qml.Engine
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lib *UiLib
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path string
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}
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func NewHtmlApplication(path string, lib *UiLib) *HtmlApplication {
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engine := qml.NewEngine()
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return &HtmlApplication{engine: engine, lib: lib, path: path}
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}
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func (app *HtmlApplication) Create() error {
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component, err := app.engine.LoadFile(app.lib.AssetPath("qml/webapp.qml"))
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if err != nil {
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return err
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}
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if filepath.Ext(app.path) == "eth" {
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return errors.New("Ethereum package not yet supported")
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// TODO
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ethutil.OpenPackage(app.path)
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}
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win := component.CreateWindow(nil)
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win.Set("url", app.path)
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webView := win.ObjectByName("webView")
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app.win = win
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app.webView = webView
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return nil
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}
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func (app *HtmlApplication) Engine() *qml.Engine {
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return app.engine
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}
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func (app *HtmlApplication) Window() *qml.Window {
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return app.win
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}
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func (app *HtmlApplication) NewBlock(block *ethchain.Block) {
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b := &QBlock{Number: int(block.BlockInfo().Number), Hash: ethutil.Hex(block.Hash())}
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app.webView.Call("onNewBlockCb", b)
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}
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func (app *HtmlApplication) ObjectChanged(stateObject *ethchain.StateObject) {
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app.webView.Call("onObjectChangeCb", NewQStateObject(stateObject))
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}
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func (app *HtmlApplication) StorageChanged(stateObject *ethchain.StateObject, addr []byte, value *big.Int) {
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app.webView.Call("onStorageChangeCb", nil)
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}
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func (app *HtmlApplication) Destroy() {
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app.engine.Destroy()
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}
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@ -19,11 +19,26 @@ func NewContract(object *ethchain.StateObject) *Contract {
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}
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func (c *Contract) GetStorage(address string) string {
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// Because somehow, even if you return nil to QML it
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// still has some magical object so we can't rely on
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// undefined or null at the QML side
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if c.object != nil {
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val := c.object.GetMem(ethutil.Big("0x" + address))
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return val.BigInt().String()
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}
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return ""
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}
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func (c *Contract) Value() string {
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if c.object != nil {
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return c.object.Amount.String()
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}
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return ""
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}
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type EthLib struct {
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stateManager *ethchain.StateManager
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blockChain *ethchain.BlockChain
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@ -63,15 +78,23 @@ func (lib *EthLib) GetKey() string {
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func (lib *EthLib) GetStateObject(address string) *Contract {
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stateObject := lib.stateManager.ProcState().GetContract(ethutil.FromHex(address))
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if stateObject != nil {
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return NewContract(stateObject)
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}
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func (lib *EthLib) Watch(addr string) {
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lib.stateManager.Watch(ethutil.FromHex(addr))
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// See GetStorage for explanation on "nil"
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return NewContract(nil)
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}
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func (lib *EthLib) Watch(addr, storageAddr string) {
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// lib.stateManager.Watch(ethutil.FromHex(addr), ethutil.FromHex(storageAddr))
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}
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func (lib *EthLib) CreateTx(recipient, valueStr, gasStr, gasPriceStr, dataStr string) (string, error) {
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return lib.Transact(recipient, valueStr, gasStr, gasPriceStr, dataStr)
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}
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func (lib *EthLib) Transact(recipient, valueStr, gasStr, gasPriceStr, dataStr string) (string, error) {
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var hash []byte
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var contractCreation bool
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if len(recipient) == 0 {
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@ -6,9 +6,9 @@ import (
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"github.com/ethereum/eth-go"
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"github.com/ethereum/eth-go/ethchain"
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"github.com/ethereum/eth-go/ethutil"
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"github.com/obscuren/mutan"
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"github.com/ethereum/go-ethereum/utils"
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"github.com/go-qml/qml"
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"github.com/obscuren/mutan"
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"os"
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"path"
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"path/filepath"
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@ -53,60 +53,18 @@ func (ui *UiLib) Open(path string) {
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}
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func (ui *UiLib) OpenHtml(path string) {
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component, err := ui.engine.LoadFile(ui.AssetPath("qml/webapp.qml"))
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if err != nil {
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ethutil.Config.Log.Debugln(err)
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container := NewHtmlApplication(path, ui)
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app := NewExtApplication(container, ui)
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return
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}
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win := component.CreateWindow(nil)
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if filepath.Ext(path) == "eth" {
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fmt.Println("Ethereum package not yet supported")
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return
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// TODO
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ethutil.OpenPackage(path)
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}
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win.Set("url", path)
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webView := win.ObjectByName("webView")
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go func() {
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blockChan := make(chan ethutil.React, 1)
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addrChan := make(chan ethutil.React, 1)
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quitChan := make(chan bool)
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go func() {
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out:
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for {
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select {
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case <-quitChan:
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ui.eth.Reactor().Unsubscribe("newBlock", blockChan)
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break out
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case block := <-blockChan:
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if block, ok := block.Resource.(*ethchain.Block); ok {
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b := &QBlock{Number: int(block.BlockInfo().Number), Hash: ethutil.Hex(block.Hash())}
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webView.Call("onNewBlockCb", b)
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}
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case stateObject := <-addrChan:
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if stateObject, ok := stateObject.Resource.(*ethchain.StateObject); ok {
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webView.Call("onObjectChangeCb", NewQStateObject(stateObject))
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}
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}
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go app.run()
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}
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// Clean up
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close(blockChan)
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close(quitChan)
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}()
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ui.eth.Reactor().Subscribe("newBlock", blockChan)
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ui.eth.Reactor().Subscribe("addressChanged", addrChan)
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win.Show()
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win.Wait()
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quitChan <- true
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}()
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func (ui *UiLib) Watch(addr, storageAddr string) {
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if len(storageAddr) == 0 {
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ui.eth.Reactor().Subscribe("storage:"+string(ethutil.FromHex(addr))+":"+string(ethutil.FromHex(storageAddr)), nil)
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} else {
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ui.eth.Reactor().Subscribe("object:"+string(ethutil.FromHex(addr)), nil)
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}
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}
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func (ui *UiLib) Muted(content string) {
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