243 lines
6.4 KiB
Go
243 lines
6.4 KiB
Go
package ethui
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import (
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"bytes"
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"encoding/hex"
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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/ethdb"
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"github.com/ethereum/eth-go/ethutil"
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"github.com/niemeyer/qml"
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"math/big"
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"strings"
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)
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// Block interface exposed to QML
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type Block struct {
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Number int
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Hash string
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}
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type Tx struct {
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Value, Hash, Address string
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Contract bool
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}
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func NewTxFromTransaction(tx *ethchain.Transaction) *Tx {
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hash := hex.EncodeToString(tx.Hash())
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sender := hex.EncodeToString(tx.Recipient)
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isContract := len(tx.Data) > 0
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return &Tx{Hash: hash, Value: ethutil.CurrencyToString(tx.Value), Address: sender, Contract: isContract}
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}
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// Creates a new QML Block from a chain block
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func NewBlockFromBlock(block *ethchain.Block) *Block {
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info := block.BlockInfo()
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hash := hex.EncodeToString(block.Hash())
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return &Block{Number: int(info.Number), Hash: hash}
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}
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type Gui struct {
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// The main application window
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win *qml.Window
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// QML Engine
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engine *qml.Engine
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component *qml.Common
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// The ethereum interface
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eth *eth.Ethereum
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// The public Ethereum library
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lib *EthLib
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txDb *ethdb.LDBDatabase
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addr []byte
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}
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// Create GUI, but doesn't start it
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func New(ethereum *eth.Ethereum) *Gui {
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lib := &EthLib{stateManager: ethereum.StateManager(), blockChain: ethereum.BlockChain(), txPool: ethereum.TxPool()}
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db, err := ethdb.NewLDBDatabase("tx_database")
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if err != nil {
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panic(err)
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}
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data, _ := ethutil.Config.Db.Get([]byte("KeyRing"))
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// On first run we won't have any keys yet, so this would crash.
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// Therefor we check if we are ready to actually start this process
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var addr []byte
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if len(data) > 0 {
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key := ethutil.Config.Db.GetKeys()[0]
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addr = key.Address()
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ethereum.StateManager().WatchAddr(addr)
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}
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return &Gui{eth: ethereum, lib: lib, txDb: db, addr: addr}
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}
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func (ui *Gui) Start(assetPath string) {
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defer ui.txDb.Close()
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// Register ethereum functions
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qml.RegisterTypes("Ethereum", 1, 0, []qml.TypeSpec{{
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Init: func(p *Block, obj qml.Object) { p.Number = 0; p.Hash = "" },
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}, {
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Init: func(p *Tx, obj qml.Object) { p.Value = ""; p.Hash = ""; p.Address = "" },
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}})
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ethutil.Config.SetClientString(fmt.Sprintf("/Ethereal v%s", "0.1"))
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ethutil.Config.Log.Infoln("[GUI] Starting GUI")
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// Create a new QML engine
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ui.engine = qml.NewEngine()
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context := ui.engine.Context()
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// Expose the eth library and the ui library to QML
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context.SetVar("eth", ui.lib)
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uiLib := NewUiLib(ui.engine, ui.eth, assetPath)
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context.SetVar("ui", uiLib)
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// Load the main QML interface
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data, _ := ethutil.Config.Db.Get([]byte("KeyRing"))
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var err error
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var component qml.Object
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firstRun := len(data) == 0
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if firstRun {
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component, err = ui.engine.LoadFile(uiLib.AssetPath("qml/first_run.qml"))
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} else {
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component, err = ui.engine.LoadFile(uiLib.AssetPath("qml/wallet.qml"))
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}
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if err != nil {
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ethutil.Config.Log.Infoln("FATAL: asset not found: you can set an alternative asset path on on the command line using option 'asset_path'")
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panic(err)
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}
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ui.win = component.CreateWindow(nil)
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uiLib.win = ui.win
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db := &Debugger{ui.win, make(chan bool)}
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ui.lib.Db = db
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uiLib.Db = db
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// Register the ui as a block processor
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//ui.eth.BlockManager.SecondaryBlockProcessor = ui
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//ui.eth.TxPool.SecondaryProcessor = ui
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// Add the ui as a log system so we can log directly to the UGI
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ethutil.Config.Log.AddLogSystem(ui)
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// Loads previous blocks
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if firstRun == false {
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go ui.setInitialBlockChain()
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go ui.readPreviousTransactions()
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go ui.update()
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}
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ui.win.Show()
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ui.win.Wait()
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ui.eth.Stop()
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}
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func (ui *Gui) setInitialBlockChain() {
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// Load previous 10 blocks
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chain := ui.eth.BlockChain().GetChain(ui.eth.BlockChain().CurrentBlock.Hash(), 10)
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for _, block := range chain {
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ui.ProcessBlock(block)
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}
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}
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func (ui *Gui) readPreviousTransactions() {
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it := ui.txDb.Db().NewIterator(nil, nil)
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for it.Next() {
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tx := ethchain.NewTransactionFromBytes(it.Value())
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ui.win.Root().Call("addTx", NewTxFromTransaction(tx))
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}
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it.Release()
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}
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func (ui *Gui) ProcessBlock(block *ethchain.Block) {
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ui.win.Root().Call("addBlock", NewBlockFromBlock(block))
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}
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// Simple go routine function that updates the list of peers in the GUI
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func (ui *Gui) update() {
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txChan := make(chan ethchain.TxMsg, 1)
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ui.eth.TxPool().Subscribe(txChan)
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account := ui.eth.StateManager().GetAddrState(ui.addr).Object
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unconfirmedFunds := new(big.Int)
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ui.win.Root().Call("setWalletValue", fmt.Sprintf("%v", ethutil.CurrencyToString(account.Amount)))
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for {
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select {
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case txMsg := <-txChan:
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tx := txMsg.Tx
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if txMsg.Type == ethchain.TxPre {
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if bytes.Compare(tx.Sender(), ui.addr) == 0 {
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ui.win.Root().Call("addTx", NewTxFromTransaction(tx))
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ui.txDb.Put(tx.Hash(), tx.RlpEncode())
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ui.eth.StateManager().GetAddrState(ui.addr).Nonce += 1
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unconfirmedFunds.Sub(unconfirmedFunds, tx.Value)
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} else if bytes.Compare(tx.Recipient, ui.addr) == 0 {
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ui.win.Root().Call("addTx", NewTxFromTransaction(tx))
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ui.txDb.Put(tx.Hash(), tx.RlpEncode())
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unconfirmedFunds.Add(unconfirmedFunds, tx.Value)
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}
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pos := "+"
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if unconfirmedFunds.Cmp(big.NewInt(0)) >= 0 {
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pos = "-"
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}
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val := ethutil.CurrencyToString(new(big.Int).Abs(ethutil.BigCopy(unconfirmedFunds)))
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str := fmt.Sprintf("%v (%s %v)", ethutil.CurrencyToString(account.Amount), pos, val)
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ui.win.Root().Call("setWalletValue", str)
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} else {
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amount := account.Amount
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if bytes.Compare(tx.Sender(), ui.addr) == 0 {
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amount.Sub(account.Amount, tx.Value)
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} else if bytes.Compare(tx.Recipient, ui.addr) == 0 {
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amount.Add(account.Amount, tx.Value)
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}
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ui.win.Root().Call("setWalletValue", fmt.Sprintf("%v", ethutil.CurrencyToString(amount)))
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}
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}
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/*
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accountAmount := ui.eth.BlockManager.GetAddrState(ui.addr).Account.Amount
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ui.win.Root().Call("setWalletValue", fmt.Sprintf("%v", accountAmount))
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ui.win.Root().Call("setPeers", fmt.Sprintf("%d / %d", ui.eth.Peers().Len(), ui.eth.MaxPeers))
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time.Sleep(1 * time.Second)
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*/
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}
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}
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// Logging functions that log directly to the GUI interface
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func (ui *Gui) Println(v ...interface{}) {
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str := strings.TrimRight(fmt.Sprintln(v...), "\n")
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lines := strings.Split(str, "\n")
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for _, line := range lines {
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ui.win.Root().Call("addLog", line)
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}
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}
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func (ui *Gui) Printf(format string, v ...interface{}) {
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str := strings.TrimRight(fmt.Sprintf(format, v...), "\n")
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lines := strings.Split(str, "\n")
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for _, line := range lines {
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ui.win.Root().Call("addLog", line)
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}
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}
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