package ethui import ( "bufio" "encoding/hex" "fmt" "github.com/ethereum/eth-go" "github.com/ethereum/eth-go/ethchain" "github.com/ethereum/eth-go/ethutil" "github.com/niemeyer/qml" "strings" "time" ) // Block interface exposed to QML type Block struct { Number int Hash string } // Creates a new QML Block from a chain block func NewBlockFromBlock(block *ethchain.Block) *Block { info := block.BlockInfo() hash := hex.EncodeToString(block.Hash()) return &Block{Number: int(info.Number), Hash: hash} } type Gui struct { // The main application window win *qml.Window // QML Engine engine *qml.Engine component *qml.Common // The ethereum interface eth *eth.Ethereum // The public Ethereum library lib *EthLib } // Create GUI, but doesn't start it func New(ethereum *eth.Ethereum) *Gui { lib := &EthLib{blockManager: ethereum.BlockManager, blockChain: ethereum.BlockManager.BlockChain(), txPool: ethereum.TxPool} data, _ := ethutil.Config.Db.Get([]byte("KeyRing")) keyRing := ethutil.NewValueFromBytes(data) addr := keyRing.Get(1).Bytes() ethereum.BlockManager.WatchAddr(addr) return &Gui{eth: ethereum, lib: lib} } func (ui *Gui) Start() { // Register ethereum functions qml.RegisterTypes("Ethereum", 1, 0, []qml.TypeSpec{{ Init: func(p *Block, obj qml.Object) { p.Number = 0; p.Hash = "" }, }}) ethutil.Config.Log.Infoln("[GUI] Starting GUI") // Create a new QML engine ui.engine = qml.NewEngine() // Load the main QML interface component, err := ui.engine.LoadFile("wallet.qml") if err != nil { panic(err) } ui.win = component.CreateWindow(nil) context := ui.engine.Context() // Expose the eth library and the ui library to QML context.SetVar("eth", ui.lib) context.SetVar("ui", &UiLib{engine: ui.engine, eth: ui.eth}) // Register the ui as a block processor ui.eth.BlockManager.SecondaryBlockProcessor = ui // Add the ui as a log system so we can log directly to the UGI ethutil.Config.Log.AddLogSystem(ui) // Loads previous blocks go ui.setInitialBlockChain() go ui.updatePeers() ui.win.Show() ui.win.Wait() } func (ui *Gui) setInitialBlockChain() { // Load previous 10 blocks chain := ui.eth.BlockManager.BlockChain().GetChain(ui.eth.BlockManager.BlockChain().CurrentBlock.Hash(), 10) for _, block := range chain { ui.ProcessBlock(block) } } func (ui *Gui) ProcessBlock(block *ethchain.Block) { ui.win.Root().Call("addBlock", NewBlockFromBlock(block)) } // Logging functions that log directly to the GUI interface func (ui *Gui) Println(v ...interface{}) { str := strings.TrimRight(fmt.Sprintln(v...), "\n") lines := strings.Split(str, "\n") for _, line := range lines { ui.win.Root().Call("addLog", line) } } func (ui *Gui) Printf(format string, v ...interface{}) { str := strings.TrimRight(fmt.Sprintf(format, v...), "\n") lines := strings.Split(str, "\n") for _, line := range lines { ui.win.Root().Call("addLog", line) } } // Simple go routine function that updates the list of peers in the GUI func (ui *Gui) updatePeers() { for { ui.win.Root().Call("setPeers", fmt.Sprintf("%d / %d", ui.eth.Peers().Len(), ui.eth.MaxPeers)) time.Sleep(1 * time.Second) } } // UI Library that has some basic functionality exposed type UiLib struct { engine *qml.Engine eth *eth.Ethereum connected bool } // Opens a QML file (external application) func (ui *UiLib) Open(path string) { component, err := ui.engine.LoadFile(path[7:]) if err != nil { ethutil.Config.Log.Debugln(err) } win := component.CreateWindow(nil) go func() { win.Show() win.Wait() }() } func (ui *UiLib) Connect() { if !ui.connected { ui.eth.Start() } } func (ui *UiLib) ConnectToPeer(addr string) { ui.eth.ConnectToPeer(addr) } type Tester struct { root qml.Object } func (t *Tester) Compile(area qml.Object) { fmt.Println(area) ethutil.Config.Log.Infoln("[TESTER] Compiling") code := area.String("text") scanner := bufio.NewScanner(strings.NewReader(code)) scanner.Split(bufio.ScanLines) var lines []string for scanner.Scan() { lines = append(lines, scanner.Text()) } }