From 2bc4fd609ca00d5a5cb0b6b3eba5f35cb334b967 Mon Sep 17 00:00:00 2001
From: Luke Dashjr <luke-jr+git@utopios.org>
Date: Fri, 23 Dec 2011 10:14:57 -0500
Subject: Bitcoin-Qt signmessage GUI (pull request #582)

---
 src/qt/messagepage.cpp | 107 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 src/qt/messagepage.cpp

(limited to 'src/qt/messagepage.cpp')

diff --git a/src/qt/messagepage.cpp b/src/qt/messagepage.cpp
new file mode 100644
index 000000000..dee1837ed
--- /dev/null
+++ b/src/qt/messagepage.cpp
@@ -0,0 +1,107 @@
+#include <string>
+#include <vector>
+
+#include "main.h"
+#include "wallet.h"
+#include "init.h"
+#include "util.h"
+
+#include "messagepage.h"
+#include "ui_messagepage.h"
+
+#include "addressbookpage.h"
+#include "guiutil.h"
+#include "walletmodel.h"
+
+#include <QClipboard>
+#include <QInputDialog>
+#include <QList>
+#include <QListWidgetItem>
+#include <QMessageBox>
+
+MessagePage::MessagePage(QWidget *parent) :
+    QDialog(parent),
+    ui(new Ui::MessagePage)
+{
+    ui->setupUi(this);
+
+    GUIUtil::setupAddressWidget(ui->signFrom, this);
+}
+
+MessagePage::~MessagePage()
+{
+    delete ui;
+}
+
+void MessagePage::setModel(WalletModel *model)
+{
+    this->model = model;
+}
+
+void MessagePage::setAddress(QString addr)
+{
+    ui->signFrom->setText(addr);
+    ui->message->setFocus();
+}
+
+void MessagePage::on_pasteButton_clicked()
+{
+    setAddress(QApplication::clipboard()->text());
+}
+
+void MessagePage::on_addressBookButton_clicked()
+{
+    AddressBookPage dlg(AddressBookPage::ForSending, AddressBookPage::ReceivingTab, this);
+    dlg.setModel(model->getAddressTableModel());
+    if(dlg.exec())
+    {
+        setAddress(dlg.getReturnValue());
+    }
+}
+
+void MessagePage::on_copyToClipboard_clicked()
+{
+    QApplication::clipboard()->setText(ui->signature->text());
+}
+
+void MessagePage::on_signMessage_clicked()
+{
+    QString address = ui->signFrom->text();
+
+    CBitcoinAddress addr(address.toStdString());
+    if (!addr.IsValid())
+    {
+        QMessageBox::critical(this, tr("Error signing"), tr("%1 is not a valid address.").arg(address),
+                              QMessageBox::Abort, QMessageBox::Abort);
+        return;
+    }
+
+    WalletModel::UnlockContext ctx(model->requestUnlock());
+    if(!ctx.isValid())
+    {
+        // Unlock wallet was cancelled
+        return;
+    }
+
+    CKey key;
+    if (!pwalletMain->GetKey(addr, key))
+    {
+        QMessageBox::critical(this, tr("Error signing"), tr("Private key for %1 is not available.").arg(address),
+                              QMessageBox::Abort, QMessageBox::Abort);
+        return;
+    }
+
+    CDataStream ss(SER_GETHASH);
+    ss << strMessageMagic;
+    ss << ui->message->document()->toPlainText().toStdString();
+
+    std::vector<unsigned char> vchSig;
+    if (!key.SignCompact(Hash(ss.begin(), ss.end()), vchSig))
+    {
+        QMessageBox::critical(this, tr("Error signing"), tr("Sign failed"),
+                              QMessageBox::Abort, QMessageBox::Abort);
+    }
+
+    ui->signature->setText(QString::fromStdString(EncodeBase64(&vchSig[0], vchSig.size())));
+    ui->signature->setFont(GUIUtil::bitcoinAddressFont());
+}
-- 
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