path: root/cmd/mist/ui_lib.go

/*
    This file is part of go-ethereum

    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>
 */
package main

import (
    "fmt"
    "io/ioutil"
    "path"

    "github.com/ethereum/go-ethereum/core/types"
    "github.com/ethereum/go-ethereum/eth"
    "github.com/ethereum/go-ethereum/ethutil"
    "github.com/ethereum/go-ethereum/event/filter"
    "github.com/ethereum/go-ethereum/javascript"
    "github.com/ethereum/go-ethereum/xeth"
    "github.com/obscuren/qml"
)

type memAddr struct {
    Num   string
    Value string
}

// UI Library that has some basic functionality exposed
type UiLib struct {
    *xeth.XEth
    engine    *qml.Engine
    eth       *eth.Ethereum
    connected bool
    assetPath string
    // The main application window
    win *qml.Window

    jsEngine *javascript.JSRE

    filterCallbacks map[int][]int
    filterManager   *filter.FilterManager
}

func NewUiLib(engine *qml.Engine, eth *eth.Ethereum, assetPath string) *UiLib {
    x := xeth.New(eth, nil)
    lib := &UiLib{XEth: x, engine: engine, eth: eth, assetPath: assetPath, jsEngine: javascript.NewJSRE(x), filterCallbacks: make(map[int][]int)} //, filters: make(map[int]*xeth.JSFilter)}
    lib.filterManager = filter.NewFilterManager(eth.EventMux())
    go lib.filterManager.Start()

    return lib
}

func (self *UiLib) Notef(args []interface{}) {
    guilogger.Infoln(args...)
}

func (self *UiLib) ImportTx(rlpTx string) {
    tx := types.NewTransactionFromBytes(ethutil.Hex2Bytes(rlpTx))
    err := self.eth.TxPool().Add(tx)
    if err != nil {
        guilogger.Infoln("import tx failed ", err)
    }
}

func (self *UiLib) EvalJavascriptFile(path string) {
    self.jsEngine.LoadExtFile(path[7:])
}

func (self *UiLib) EvalJavascriptString(str string) string {
    value, err := self.jsEngine.Run(str)
    if err != nil {
        return err.Error()
    }

    return fmt.Sprintf("%v", value)
}

func (ui *UiLib) Muted(content string) {
    component, err := ui.engine.LoadFile(ui.AssetPath("qml/muted.qml"))
    if err != nil {
        guilogger.Debugln(err)

        return
    }
    win := component.CreateWindow(nil)
    go func() {
        path := "file://" + ui.AssetPath("muted/index.html")
        win.Set("url", path)

        win.Show()
        win.Wait()
    }()
}

func (ui *UiLib) Connect(button qml.Object) {
    if !ui.connected {
        ui.eth.Start()
        ui.connected = true
        button.Set("enabled", false)
    }
}

func (ui *UiLib) ConnectToPeer(nodeURL string) {
    if err := ui.eth.SuggestPeer(nodeURL); err != nil {
        guilogger.Infoln("SuggestPeer error: " + err.Error())
    }
}

func (ui *UiLib) AssetPath(p string) string {
    return path.Join(ui.assetPath, p)
}

func (self *UiLib) Transact(params map[string]interface{}) (string, error) {
    object := mapToTxParams(params)

    return self.XEth.Transact(
        object["from"],
        object["to"],
        object["value"],
        object["gas"],
        object["gasPrice"],
        object["data"],
    )
}

func (self *UiLib) Compile(code string) (string, error) {
    bcode, err := ethutil.Compile(code, false)
    if err != nil {
        return err.Error(), err
    }

    return ethutil.Bytes2Hex(bcode), err
}

func (self *UiLib) Call(params map[string]interface{}) (string, error) {
    object := mapToTxParams(params)

    return self.XEth.Execute(
        object["to"],
        object["value"],
        object["gas"],
        object["gasPrice"],
        object["data"],
    )
}

func (self *UiLib) AddLocalTransaction(to, data, gas, gasPrice, value string) int {
    return 0
    /*
        return self.miner.AddLocalTx(&miner.LocalTx{
            To:       ethutil.Hex2Bytes(to),
            Data:     ethutil.Hex2Bytes(data),
            Gas:      gas,
            GasPrice: gasPrice,
            Value:    value,
        }) - 1
    */
}

func (self *UiLib) RemoveLocalTransaction(id int) {
    //self.miner.RemoveLocalTx(id)
}

func (self *UiLib) SetGasPrice(price string) {
    self.Miner().MinAcceptedGasPrice = ethutil.Big(price)
}

func (self *UiLib) SetExtra(extra string) {
    self.Miner().Extra = extra
}

func (self *UiLib) ToggleMining() bool {
    if !self.Miner().Mining() {
        self.Miner().Start()

        return true
    } else {
        self.Miner().Stop()

        return false
    }
}

func (self *UiLib) ToHex(data string) string {
    return "0x" + ethutil.Bytes2Hex([]byte(data))
}

func (self *UiLib) ToAscii(data string) string {
    start := 0
    if len(data) > 1 && data[0:2] == "0x" {
        start = 2
    }
    return string(ethutil.Hex2Bytes(data[start:]))
}

/// Ethereum filter methods
func (self *UiLib) NewFilter(object map[string]interface{}, view *qml.Common) (id int) {
    /* TODO remove me
    filter := qt.NewFilterFromMap(object, self.eth)
    filter.MessageCallback = func(messages state.Messages) {
        view.Call("messages", xeth.ToMessages(messages), id)
    }
    id = self.filterManager.InstallFilter(filter)
    return id
    */
    return 0
}

func (self *UiLib) NewFilterString(typ string, view *qml.Common) (id int) {
    /* TODO remove me
    filter := core.NewFilter(self.eth)
    filter.BlockCallback = func(block *types.Block) {
        view.Call("messages", "{}", id)
    }
    id = self.filterManager.InstallFilter(filter)
    return id
    */
    return 0
}

func (self *UiLib) Messages(id int) *ethutil.List {
    /* TODO remove me
    filter := self.filterManager.GetFilter(id)
    if filter != nil {
        messages := xeth.ToMessages(filter.Find())

        return messages
    }
    */

    return ethutil.EmptyList()
}

func (self *UiLib) ReadFile(p string) string {
    content, err := ioutil.ReadFile(self.AssetPath(path.Join("ext", p)))
    if err != nil {
        guilogger.Infoln("error reading file", p, ":", err)
    }
    return string(content)
}

func (self *UiLib) UninstallFilter(id int) {
    self.filterManager.UninstallFilter(id)
}

func mapToTxParams(object map[string]interface{}) map[string]string {
    // Default values
    if object["from"] == nil {
        object["from"] = ""
    }
    if object["to"] == nil {
        object["to"] = ""
    }
    if object["value"] == nil {
        object["value"] = ""
    }
    if object["gas"] == nil {
        object["gas"] = ""
    }
    if object["gasPrice"] == nil {
        object["gasPrice"] = ""
    }

    var dataStr string
    var data []string
    if list, ok := object["data"].(*qml.List); ok {
        list.Convert(&data)
    } else if str, ok := object["data"].(string); ok {
        data = []string{str}
    }

    for _, str := range data {
        if ethutil.IsHex(str) {
            str = str[2:]

            if len(str) != 64 {
                str = ethutil.LeftPadString(str, 64)
            }
        } else {
            str = ethutil.Bytes2Hex(ethutil.LeftPadBytes(ethutil.Big(str).Bytes(), 32))
        }

        dataStr += str
    }
    object["data"] = dataStr

    conv := make(map[string]string)
    for key, value := range object {
        if v, ok := value.(string); ok {
            conv[key] = v
        }
    }

    return conv
}