Implemented Qt whisper interface

ui/qt/qwhisper/whisper.go

+package qwhisper
+
+import (
+	"time"
+
+	"github.com/ethereum/eth-go/ethutil"
+	"github.com/ethereum/go-ethereum/whisper"
+)
+
+func fromHex(s string) []byte {
+	if len(s) > 1 {
+		return ethutil.Hex2Bytes(s[2:])
+	}
+	return nil
+}
+func toHex(b []byte) string { return "0x" + ethutil.Bytes2Hex(b) }
+
+type Whisper struct {
+	*whisper.Whisper
+}
+
+func New(w *whisper.Whisper) *Whisper {
+	return &Whisper{w}
+}
+
+func (self *Whisper) Post(data string, pow, ttl uint32, to, from string) {
+	msg := whisper.NewMessage(fromHex(data))
+	envelope, err := msg.Seal(time.Duration(pow), whisper.Opts{
+		Ttl:  time.Duration(ttl),
+		To:   crypto.PubTECDSA(fromHex(to)),
+		From: crypto.ToECDSA(fromHex(from)),
+	})
+	if err != nil {
+		// handle error
+		return
+	}
+
+	if err := self.Whisper.Send(envolpe); err != nil {
+		// handle error
+		return
+	}
+}
+
+func (self *Whisper) NewIdentity() string {
+	return toHex(self.Whisper.NewIdentity().D.Bytes())
+}
+
+func (self *Whisper) HasIdentify(key string) bool {
+	return self.Whisper.HasIdentity(crypto.ToECDSA(fromHex(key)))
+}
+
+func (self *Whisper) Watch(opts map[string]interface{}) {
+	filter := filterFromMap(opts)
+	filter.Fn = func(msg *Message) {
+		// TODO POST TO QT WINDOW
+	}
+	self.Watch(filter)
+}
+
+func filterFromMap(opts map[string]interface{}) whisper.Filter {
+	var f Filter
+	if to, ok := opts["to"].(string); ok {
+		f.To = ToECDSA(fromHex(to))
+	}
+	if from, ok := opts["from"].(string); ok {
+		f.From = ToECDSAPub(fromHex(from))
+	}
+
+	return f
+}