plugeth/cmd/mist/gui.go

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/*
This file is part of go-ethereum
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go-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
go-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @authors
* Jeffrey Wilcke <i@jev.io>
*/
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package main
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import "C"
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import (
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"encoding/json"
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"fmt"
"io/ioutil"
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"math/big"
"path/filepath"
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"runtime"
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"sort"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/ui/qt/qwhisper"
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"github.com/ethereum/go-ethereum/xeth"
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"github.com/obscuren/qml"
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)
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var guilogger = logger.NewLogger("GUI")
type ServEv byte
const (
setup ServEv = iota
update
)
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type Gui struct {
// The main application window
win *qml.Window
// QML Engine
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engine *qml.Engine
component *qml.Common
// The ethereum interface
eth *eth.Ethereum
serviceEvents chan ServEv
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// The public Ethereum library
uiLib *UiLib
whisper *qwhisper.Whisper
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txDb *ethdb.LDBDatabase
open bool
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xeth *xeth.XEth
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Session string
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plugins map[string]plugin
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}
// Create GUI, but doesn't start it
func NewWindow(ethereum *eth.Ethereum) *Gui {
db, err := ethdb.NewLDBDatabase(filepath.Join(ethereum.DataDir, "tx_database"))
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if err != nil {
panic(err)
}
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xeth := xeth.New(ethereum, nil)
gui := &Gui{eth: ethereum,
txDb: db,
xeth: xeth,
open: false,
plugins: make(map[string]plugin),
serviceEvents: make(chan ServEv, 1),
}
data, _ := ioutil.ReadFile(filepath.Join(ethereum.DataDir, "plugins.json"))
json.Unmarshal(data, &gui.plugins)
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return gui
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}
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func (gui *Gui) Start(assetPath, libPath string) {
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defer gui.txDb.Close()
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guilogger.Infoln("Starting GUI")
go gui.service()
// Register ethereum functions
qml.RegisterTypes("Ethereum", 1, 0, []qml.TypeSpec{{
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Init: func(p *xeth.Block, obj qml.Object) { p.Number = 0; p.Hash = "" },
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}, {
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Init: func(p *xeth.Transaction, obj qml.Object) { p.Value = ""; p.Hash = ""; p.Address = "" },
}, {
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Init: func(p *xeth.KeyVal, obj qml.Object) { p.Key = ""; p.Value = "" },
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}})
// Create a new QML engine
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gui.engine = qml.NewEngine()
context := gui.engine.Context()
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gui.uiLib = NewUiLib(gui.engine, gui.eth, assetPath, libPath)
gui.whisper = qwhisper.New(gui.eth.Whisper())
// Expose the eth library and the ui library to QML
context.SetVar("gui", gui)
context.SetVar("eth", gui.uiLib)
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context.SetVar("shh", gui.whisper)
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//clipboard.SetQMLClipboard(context)
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win, err := gui.showWallet(context)
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if err != nil {
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guilogger.Errorln("asset not found: you can set an alternative asset path on the command line using option 'asset_path'", err)
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panic(err)
}
gui.open = true
win.Show()
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win.Wait()
gui.open = false
}
func (gui *Gui) Stop() {
if gui.open {
gui.open = false
gui.win.Hide()
}
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guilogger.Infoln("Stopped")
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}
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func (gui *Gui) showWallet(context *qml.Context) (*qml.Window, error) {
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component, err := gui.engine.LoadFile(gui.uiLib.AssetPath("qml/main.qml"))
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if err != nil {
return nil, err
}
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gui.createWindow(component)
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return gui.win, nil
}
func (gui *Gui) GenerateKey() {
_, err := gui.eth.AccountManager().NewAccount("hurr")
if err != nil {
// TODO: UI feedback?
}
}
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func (gui *Gui) showKeyImport(context *qml.Context) (*qml.Window, error) {
context.SetVar("lib", gui)
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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 {
gui.win = comp.CreateWindow(nil)
gui.uiLib.win = gui.win
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return gui.win
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}
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func (gui *Gui) setInitialChain(ancientBlocks bool) {
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sBlk := gui.eth.ChainManager().LastBlockHash()
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blk := gui.eth.ChainManager().GetBlock(sBlk)
for ; blk != nil; blk = gui.eth.ChainManager().GetBlock(sBlk) {
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sBlk = blk.ParentHash()
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gui.processBlock(blk, true)
}
}
func (gui *Gui) loadAddressBook() {
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/*
view := gui.getObjectByName("infoView")
nameReg := gui.xeth.World().Config().Get("NameReg")
if nameReg != nil {
it := nameReg.Trie().Iterator()
for it.Next() {
if it.Key[0] != 0 {
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view.Call("addAddress", struct{ Name, Address string }{string(it.Key), common.Bytes2Hex(it.Value)})
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}
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}
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}
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*/
}
func (self *Gui) loadMergedMiningOptions() {
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/*
view := self.getObjectByName("mergedMiningModel")
mergeMining := self.xeth.World().Config().Get("MergeMining")
if mergeMining != nil {
i := 0
it := mergeMining.Trie().Iterator()
for it.Next() {
view.Call("addMergedMiningOption", struct {
Checked bool
Name, Address string
Id, ItemId int
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}{false, string(it.Key), common.Bytes2Hex(it.Value), 0, i})
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i++
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}
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}
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*/
}
func (gui *Gui) insertTransaction(window string, tx *types.Transaction) {
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var inout string
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from, _ := tx.From()
if gui.eth.AccountManager().HasAccount(from) {
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inout = "send"
} else {
inout = "recv"
}
ptx := xeth.NewTx(tx)
ptx.Sender = from.Hex()
if to := tx.To(); to != nil {
ptx.Address = to.Hex()
}
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if window == "post" {
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//gui.getObjectByName("transactionView").Call("addTx", ptx, inout)
} else {
gui.getObjectByName("pendingTxView").Call("addTx", ptx, inout)
}
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}
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func (gui *Gui) readPreviousTransactions() {
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it := gui.txDb.NewIterator()
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for it.Next() {
tx := types.NewTransactionFromBytes(it.Value())
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gui.insertTransaction("post", tx)
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}
it.Release()
}
func (gui *Gui) processBlock(block *types.Block, initial bool) {
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name := block.Coinbase().Hex()
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b := xeth.NewBlock(block)
b.Name = name
gui.getObjectByName("chainView").Call("addBlock", b, initial)
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}
func (gui *Gui) setWalletValue(amount, unconfirmedFunds *big.Int) {
var str string
if unconfirmedFunds != nil {
pos := "+"
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if unconfirmedFunds.Cmp(big.NewInt(0)) < 0 {
pos = "-"
}
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val := common.CurrencyToString(new(big.Int).Abs(common.BigCopy(unconfirmedFunds)))
str = fmt.Sprintf("%v (%s %v)", common.CurrencyToString(amount), pos, val)
} else {
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str = fmt.Sprintf("%v", common.CurrencyToString(amount))
}
gui.win.Root().Call("setWalletValue", str)
}
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func (self *Gui) getObjectByName(objectName string) qml.Object {
return self.win.Root().ObjectByName(objectName)
}
func (gui *Gui) SendCommand(cmd ServEv) {
gui.serviceEvents <- cmd
}
func (gui *Gui) service() {
for ev := range gui.serviceEvents {
switch ev {
case setup:
go gui.setup()
case update:
go gui.update()
}
}
}
func (gui *Gui) setup() {
for gui.win == nil {
time.Sleep(time.Millisecond * 200)
}
for _, plugin := range gui.plugins {
guilogger.Infoln("Loading plugin ", plugin.Name)
gui.win.Root().Call("addPlugin", plugin.Path, "")
}
go func() {
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go gui.setInitialChain(false)
gui.loadAddressBook()
gui.loadMergedMiningOptions()
gui.setPeerInfo()
}()
gui.whisper.SetView(gui.getObjectByName("whisperView"))
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gui.SendCommand(update)
}
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// Simple go routine function that updates the list of peers in the GUI
func (gui *Gui) update() {
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peerUpdateTicker := time.NewTicker(5 * time.Second)
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generalUpdateTicker := time.NewTicker(500 * time.Millisecond)
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statsUpdateTicker := time.NewTicker(5 * time.Second)
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lastBlockLabel := gui.getObjectByName("lastBlockLabel")
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//miningLabel := gui.getObjectByName("miningLabel")
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events := gui.eth.EventMux().Subscribe(
core.ChainEvent{},
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core.TxPreEvent{},
core.TxPostEvent{},
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)
defer events.Unsubscribe()
for {
select {
case ev, isopen := <-events.Chan():
if !isopen {
return
}
switch ev := ev.(type) {
case core.ChainEvent:
gui.processBlock(ev.Block, false)
case core.TxPreEvent:
gui.insertTransaction("pre", ev.Tx)
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case core.TxPostEvent:
gui.getObjectByName("pendingTxView").Call("removeTx", xeth.NewTx(ev.Tx))
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}
case <-peerUpdateTicker.C:
gui.setPeerInfo()
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case <-generalUpdateTicker.C:
statusText := "#" + gui.eth.ChainManager().CurrentBlock().Number().String()
lastBlockLabel.Set("text", statusText)
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//miningLabel.Set("text", strconv.FormatInt(gui.uiLib.Miner().HashRate(), 10))
case <-statsUpdateTicker.C:
gui.setStatsPane()
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}
}
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}
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func (gui *Gui) setStatsPane() {
var memStats runtime.MemStats
runtime.ReadMemStats(&memStats)
statsPane := gui.getObjectByName("statsPane")
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statsPane.Set("text", fmt.Sprintf(`###### Mist %s (%s) #######
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eth %d (p2p = %d)
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CPU: # %d
Goroutines: # %d
CGoCalls: # %d
Alloc: %d
Heap Alloc: %d
CGNext: %x
NumGC: %d
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`, Version, runtime.Version(),
eth.ProtocolVersion, 2,
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runtime.NumCPU, runtime.NumGoroutine(), runtime.NumCgoCall(),
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memStats.Alloc, memStats.HeapAlloc,
memStats.NextGC, memStats.NumGC,
))
}
type qmlpeer struct{ Addr, NodeID, Name, Caps string }
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type peersByID []*qmlpeer
func (s peersByID) Len() int { return len(s) }
func (s peersByID) Less(i, j int) bool { return s[i].NodeID < s[j].NodeID }
func (s peersByID) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
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func (gui *Gui) setPeerInfo() {
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peers := gui.eth.Peers()
qpeers := make(peersByID, len(peers))
for i, p := range peers {
qpeers[i] = &qmlpeer{
NodeID: p.ID().String(),
Addr: p.RemoteAddr().String(),
Name: p.Name(),
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Caps: fmt.Sprint(p.Caps()),
}
}
// we need to sort the peers because they jump around randomly
// otherwise. order returned by eth.Peers is random because they
// are taken from a map.
sort.Sort(qpeers)
gui.win.Root().Call("setPeerCounters", fmt.Sprintf("%d / %d", len(peers), gui.eth.MaxPeers()))
gui.win.Root().Call("clearPeers")
for _, p := range qpeers {
gui.win.Root().Call("addPeer", p)
}
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}
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/*
func LoadExtension(path string) (uintptr, error) {
lib, err := ffi.NewLibrary(path)
if err != nil {
return 0, err
}
so, err := lib.Fct("sharedObject", ffi.Pointer, nil)
if err != nil {
return 0, err
}
ptr := so()
err = lib.Close()
if err != nil {
return 0, err
}
return ptr.Interface().(uintptr), nil
}
*/
/*
vec, errr := LoadExtension("/Users/jeffrey/Desktop/build-libqmltest-Desktop_Qt_5_2_1_clang_64bit-Debug/liblibqmltest_debug.dylib")
fmt.Printf("Fetched vec with addr: %#x\n", vec)
if errr != nil {
fmt.Println(errr)
} else {
context.SetVar("vec", (unsafe.Pointer)(vec))
}
*/