Two way name application.

alethzero/Main.ui

@@ -382,21 +382,21 @@
    </attribute>
    <widget class="QWidget" name="dockWidgetContents_5">
     <layout class="QGridLayout" name="gridLayout">
-     <item row="4" column="3">
+     <item row="5" column="3">
       <widget class="QPushButton" name="send">
        <property name="text">
         <string>Send</string>
        </property>
       </widget>
      </item>
-     <item row="1" column="0">
+     <item row="2" column="0">
       <widget class="QLabel" name="label5_2">
        <property name="text">
         <string>Amount</string>
        </property>
       </widget>
      </item>
-     <item row="1" column="1">
+     <item row="2" column="1">
       <widget class="QSpinBox" name="value">
        <property name="suffix">
         <string/>
@@ -409,10 +409,10 @@
        </property>
       </widget>
      </item>
-     <item row="1" column="2" colspan="2">
+     <item row="2" column="2" colspan="2">
       <widget class="QComboBox" name="valueUnits"/>
      </item>
-     <item row="3" column="0" colspan="4">
+     <item row="4" column="0" colspan="4">
       <widget class="QSplitter" name="splitter_5">
        <property name="orientation">
         <enum>Qt::Horizontal</enum>
@@ -425,26 +425,13 @@
        </widget>
       </widget>
      </item>
-     <item row="4" column="0">
+     <item row="5" column="0">
       <widget class="QLabel" name="total">
        <property name="text">
         <string/>
        </property>
       </widget>
      </item>
-     <item row="0" column="0">
-      <widget class="QLabel" name="label5">
-       <property name="sizePolicy">
-        <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
-         <horstretch>0</horstretch>
-         <verstretch>0</verstretch>
-        </sizepolicy>
-       </property>
-       <property name="text">
-        <string>To</string>
-       </property>
-      </widget>
-     </item>
      <item row="0" column="1" colspan="3">
       <widget class="QLineEdit" name="destination">
        <property name="sizePolicy">
@@ -458,7 +445,7 @@
        </property>
       </widget>
      </item>
-     <item row="2" column="1" colspan="3">
+     <item row="3" column="1" colspan="3">
       <widget class="QLabel" name="fee">
        <property name="text">
         <string/>
@@ -468,7 +455,7 @@
        </property>
       </widget>
      </item>
-     <item row="2" column="0">
+     <item row="3" column="0">
       <widget class="QLabel" name="label_2">
        <property name="sizePolicy">
         <sizepolicy hsizetype="Preferred" vsizetype="Maximum">
@@ -484,6 +471,32 @@
        </property>
       </widget>
      </item>
+     <item row="1" column="1" colspan="3">
+      <widget class="QLineEdit" name="calculatedName">
+       <property name="enabled">
+        <bool>false</bool>
+       </property>
+       <property name="readOnly">
+        <bool>true</bool>
+       </property>
+       <property name="placeholderText">
+        <string/>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="0" rowspan="2">
+      <widget class="QLabel" name="label5">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <property name="text">
+        <string>To</string>
+       </property>
+      </widget>
+     </item>
     </layout>
    </widget>
   </widget>

alethzero/MainWin.cpp

@@ -79,7 +79,19 @@ QString Main::render(eth::Address _a) const
 
 Address Main::fromString(QString const& _a) const
 {
-	return _a.size() ? Address(fromUserHex(_a.toStdString())) : Address();
+	static const Address c_nameContract(fromUserHex("f28e4d396cfc7bae483e464221b0d2bd3c27f21f"));
+	string sn = _a.toStdString();
+	if (sn.size() > 32)
+		sn.resize(32);
+	h256 n;
+	memcpy(n.data(), sn.data(), sn.size());
+	memset(n.data() + sn.size(), 0, 32 - sn.size());
+	if (h256 a = m_client->state().contractMemory(c_nameContract, n))
+		return right160(a);
+	if (_a.size() == 32)
+		return Address(fromUserHex(_a.toStdString()));
+	else
+		return Address();
 }
 
 void Main::on_about_triggered()
@@ -383,6 +395,13 @@ void Main::on_accounts_doubleClicked()
 
 void Main::on_destination_textChanged()
 {
+	if (ui->destination->text().size())
+		if (Address a = fromString(ui->destination->text()))
+			ui->calculatedName->setText(render(a));
+		else
+			ui->calculatedName->setText("Unknown Address");
+	else
+		ui->calculatedName->setText("Create Contract");
 	updateFee();
 }