qt: use SendCoinsRecipient for payment request information

This brings some symmetry into the design by using the same object
both for incoming URIs that are parsed as for outgoing URIs that
are formatted.

src/qt/receiverequestdialog.cpp

@@ -5,6 +5,7 @@
 #include "guiconstants.h"
 #include "guiutil.h"
 #include "optionsmodel.h"
+#include "walletmodel.h"
 
 #include <QPixmap>
 #include <QClipboard>
@@ -63,25 +64,25 @@ void QRImageWidget::copyImage()
     QApplication::clipboard()->setImage(exportImage());
 }
 
-ReceiveRequestDialog::ReceiveRequestDialog(const QString &addr, const QString &label, quint64 amount, const QString &message, QWidget *parent) :
+ReceiveRequestDialog::ReceiveRequestDialog(const SendCoinsRecipient &info, QWidget *parent) :
     QDialog(parent),
     ui(new Ui::ReceiveRequestDialog),
     model(0),
-    address(addr)
+    info(info)
 {
     ui->setupUi(this);
 
-    QString target = label;
+    QString target = info.label;
     if(target.isEmpty())
-        target = addr;
+        target = info.address;
     setWindowTitle(tr("Request payment to %1").arg(target));
 
-    ui->lnAddress->setText(addr);
-    if(amount)
-        ui->lnReqAmount->setValue(amount);
+    ui->lnAddress->setText(info.address);
+    if(info.amount)
+        ui->lnReqAmount->setValue(info.amount);
     ui->lnReqAmount->setReadOnly(true);
-    ui->lnLabel->setText(label);
-    ui->lnMessage->setText(message);
+    ui->lnLabel->setText(info.label);
+    ui->lnMessage->setText(info.message);
 
 #ifndef USE_QRCODE
     ui->btnSaveAs->setVisible(false);
@@ -146,7 +147,7 @@ void ReceiveRequestDialog::genCode()
 
 QString ReceiveRequestDialog::getURI()
 {
-    QString ret = QString("bitcoin:%1").arg(address);
+    QString ret = QString("bitcoin:%1").arg(info.address);
     int paramCount = 0;
 
     if (ui->lnReqAmount->validate())