aboutsummaryrefslogtreecommitdiffstats
path: root/ethereal/ui/gui.go
blob: 7290bd6ec4ec97c2ef17a98627495897fc28956b (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
package ethui

import (
    "bytes"
    "fmt"
    "github.com/ethereum/eth-go"
    "github.com/ethereum/eth-go/ethchain"
    "github.com/ethereum/eth-go/ethdb"
    "github.com/ethereum/eth-go/ethpub"
    "github.com/ethereum/eth-go/ethutil"
    "github.com/go-qml/qml"
    "github.com/obscuren/mutan"
    "math/big"
    "strings"
)

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
    uiLib *UiLib

    txDb *ethdb.LDBDatabase

    addr []byte

    pub *ethpub.PEthereum
}

// Create GUI, but doesn't start it
func New(ethereum *eth.Ethereum) *Gui {
    lib := &EthLib{stateManager: ethereum.StateManager(), blockChain: ethereum.BlockChain(), txPool: ethereum.TxPool()}
    db, err := ethdb.NewLDBDatabase("tx_database")
    if err != nil {
        panic(err)
    }

    // On first run we won't have any keys yet, so this would crash.
    // Therefor we check if we are ready to actually start this process
    var addr []byte
    if ethutil.GetKeyRing().Len() != 0 {
        addr = ethutil.GetKeyRing().Get(0).Address()
    }

    pub := ethpub.NewPEthereum(ethereum)

    return &Gui{eth: ethereum, lib: lib, txDb: db, addr: addr, pub: pub}
}

func (gui *Gui) Start(assetPath string) {
    const version = "0.5.0 RC8"

    defer gui.txDb.Close()

    // Register ethereum functions
    qml.RegisterTypes("Ethereum", 1, 0, []qml.TypeSpec{{
        Init: func(p *ethpub.PBlock, obj qml.Object) { p.Number = 0; p.Hash = "" },
    }, {
        Init: func(p *ethpub.PTx, obj qml.Object) { p.Value = ""; p.Hash = ""; p.Address = "" },
    }})

    ethutil.Config.SetClientString(fmt.Sprintf("/Ethereal v%s", version))
    ethutil.Config.Log.Infoln("[GUI] Starting GUI")
    // Create a new QML engine
    gui.engine = qml.NewEngine()
    context := gui.engine.Context()

    // Expose the eth library and the ui library to QML
    context.SetVar("eth", gui)
    context.SetVar("pub", gui.pub)
    gui.uiLib = NewUiLib(gui.engine, gui.eth, assetPath)
    context.SetVar("ui", gui.uiLib)

    // Load the main QML interface
    data, _ := ethutil.Config.Db.Get([]byte("KeyRing"))

    var win *qml.Window
    var err error
    if len(data) == 0 {
        win, err = gui.showKeyImport(context)
    } else {
        win, err = gui.showWallet(context)
    }
    if err != nil {
        ethutil.Config.Log.Infoln("FATAL: asset not found: you can set an alternative asset path on on the command line using option 'asset_path'")

        panic(err)
    }

    win.Show()
    win.Wait()

    gui.eth.Stop()
}

func (gui *Gui) showWallet(context *qml.Context) (*qml.Window, error) {
    component, err := gui.engine.LoadFile(gui.uiLib.AssetPath("qml/wallet.qml"))
    if err != nil {
        return nil, err
    }

    win := gui.createWindow(component)

    go gui.setInitialBlockChain()
    go gui.readPreviousTransactions()
    go gui.update()

    return win, nil
}

func (gui *Gui) showKeyImport(context *qml.Context) (*qml.Window, error) {
    context.SetVar("lib", gui.lib)
    component, err := gui.engine.LoadFile(gui.uiLib.AssetPath("qml/first_run.qml"))
    if err != nil {
        return nil, err
    }

    return gui.createWindow(component), nil
}

func (gui *Gui) createWindow(comp qml.Object) *qml.Window {
    win := comp.CreateWindow(nil)

    gui.win = win
    gui.uiLib.win = win

    db := &Debugger{gui.win, make(chan bool)}
    gui.lib.Db = db
    gui.uiLib.Db = db

    return gui.win
}

func (gui *Gui) setInitialBlockChain() {
    // Load previous 10 blocks
    chain := gui.eth.BlockChain().GetChain(gui.eth.BlockChain().CurrentBlock.Hash(), 10)
    for _, block := range chain {
        gui.processBlock(block)
    }

}

func (gui *Gui) readPreviousTransactions() {
    it := gui.txDb.Db().NewIterator(nil, nil)
    for it.Next() {
        tx := ethchain.NewTransactionFromBytes(it.Value())

        gui.win.Root().Call("addTx", ethpub.NewPTx(tx))
    }
    it.Release()
}

func (gui *Gui) processBlock(block *ethchain.Block) {
    gui.win.Root().Call("addBlock", ethpub.NewPBlock(block))
}

func (gui *Gui) setWalletValue(amount, unconfirmedFunds *big.Int) {
    var str string
    if unconfirmedFunds != nil {
        pos := "+"
        if unconfirmedFunds.Cmp(big.NewInt(0)) < 0 {
            pos = "-"
        }
        val := ethutil.CurrencyToString(new(big.Int).Abs(ethutil.BigCopy(unconfirmedFunds)))
        str = fmt.Sprintf("%v (%s %v)", ethutil.CurrencyToString(amount), pos, val)
    } else {
        str = fmt.Sprintf("%v", ethutil.CurrencyToString(amount))
    }

    gui.win.Root().Call("setWalletValue", str)
}

// Simple go routine function that updates the list of peers in the GUI
func (gui *Gui) update() {
    reactor := gui.eth.Reactor()

    blockChan := make(chan ethutil.React, 1)
    txChan := make(chan ethutil.React, 1)

    reactor.Subscribe("newBlock", blockChan)
    reactor.Subscribe("newTx:pre", txChan)
    reactor.Subscribe("newTx:post", txChan)

    state := gui.eth.StateManager().TransState()

    unconfirmedFunds := new(big.Int)
    gui.win.Root().Call("setWalletValue", fmt.Sprintf("%v", ethutil.CurrencyToString(state.GetAccount(gui.addr).Amount)))

    for {
        select {
        case b := <-blockChan:
            block := b.Resource.(*ethchain.Block)
            if bytes.Compare(block.Coinbase, gui.addr) == 0 {
                gui.setWalletValue(gui.eth.StateManager().CurrentState().GetAccount(gui.addr).Amount, nil)
            }

        case txMsg := <-txChan:
            tx := txMsg.Resource.(*ethchain.Transaction)

            if txMsg.Event == "newTx:pre" {
                object := state.GetAccount(gui.addr)

                if bytes.Compare(tx.Sender(), gui.addr) == 0 {
                    gui.win.Root().Call("addTx", ethpub.NewPTx(tx))
                    gui.txDb.Put(tx.Hash(), tx.RlpEncode())

                    unconfirmedFunds.Sub(unconfirmedFunds, tx.Value)
                } else if bytes.Compare(tx.Recipient, gui.addr) == 0 {
                    gui.win.Root().Call("addTx", ethpub.NewPTx(tx))
                    gui.txDb.Put(tx.Hash(), tx.RlpEncode())

                    unconfirmedFunds.Add(unconfirmedFunds, tx.Value)
                }

                gui.setWalletValue(object.Amount, unconfirmedFunds)
            } else {
                object := state.GetAccount(gui.addr)
                if bytes.Compare(tx.Sender(), gui.addr) == 0 {
                    object.SubAmount(tx.Value)
                } else if bytes.Compare(tx.Recipient, gui.addr) == 0 {
                    object.AddAmount(tx.Value)
                }

                gui.setWalletValue(object.Amount, nil)

                state.UpdateStateObject(object)
            }
        }
    }
}

// Logging functions that log directly to the GUI interface
func (gui *Gui) Println(v ...interface{}) {
    str := strings.TrimRight(fmt.Sprintln(v...), "\n")
    lines := strings.Split(str, "\n")
    for _, line := range lines {
        gui.win.Root().Call("addLog", line)
    }
}

func (gui *Gui) Printf(format string, v ...interface{}) {
    str := strings.TrimRight(fmt.Sprintf(format, v...), "\n")
    lines := strings.Split(str, "\n")
    for _, line := range lines {
        gui.win.Root().Call("addLog", line)
    }
}

func (gui *Gui) Transact(recipient, value, gas, gasPrice, data string) (*ethpub.PReceipt, error) {
    keyPair := ethutil.GetKeyRing().Get(0)

    return gui.pub.Transact(ethutil.Hex(keyPair.PrivateKey), recipient, value, gas, gasPrice, data)
}

func (gui *Gui) Create(recipient, value, gas, gasPrice, data string) (*ethpub.PReceipt, error) {
    keyPair := ethutil.GetKeyRing().Get(0)

    mainInput, initInput := mutan.PreParse(data)

    return gui.pub.Create(ethutil.Hex(keyPair.PrivateKey), value, gas, gasPrice, initInput, mainInput)
}