Copy amount to clipboard (implements #657)

- Also, unify similar code related to copying transaction fields to clipboard

src/qt/guiutil.cpp

@@ -12,6 +12,9 @@
 #include <QLineEdit>
 #include <QUrl>
 #include <QTextDocument> // For Qt::escape
+#include <QAbstractItemView>
+#include <QApplication>
+#include <QClipboard>
 
 QString GUIUtil::dateTimeStr(qint64 nTime)
 {
@@ -88,3 +91,16 @@ QString GUIUtil::HtmlEscape(const std::string& str, bool fMultiLine)
 {
     return HtmlEscape(QString::fromStdString(str), fMultiLine);
 }
+
+void GUIUtil::copyEntryData(QAbstractItemView *view, int column, int role)
+{
+    if(!view || !view->selectionModel())
+        return;
+    QModelIndexList selection = view->selectionModel()->selectedRows(column);
+
+    if(!selection.isEmpty())
+    {
+        // Copy first item
+        QApplication::clipboard()->setText(selection.at(0).data(role).toString());
+    }
+}

src/qt/guiutil.h

@@ -9,6 +9,7 @@ class QLineEdit;
 class QWidget;
 class QDateTime;
 class QUrl;
+class QAbstractItemView;
 QT_END_NAMESPACE
 class SendCoinsRecipient;
 
@@ -35,6 +36,15 @@ public:
     // HTML escaping for rich text controls
     static QString HtmlEscape(const QString& str, bool fMultiLine=false);
     static QString HtmlEscape(const std::string& str, bool fMultiLine=false);
+
+    /** Copy a field of the currently selected entry of a view to the clipboard. Does nothing if nothing
+        is selected.
+       @param[in] column  Data column to extract from the model
+       @param[in] role    Data role to extract from the model
+       @see  TransactionView::copyLabel, TransactionView::copyAmount, TransactionView::copyAddress
+     */
+    static void copyEntryData(QAbstractItemView *view, int column, int role=Qt::EditRole);
+
 };
 
 #endif // GUIUTIL_H

src/qt/transactionview.cpp

@@ -10,6 +10,7 @@
 #include "transactiondescdialog.h"
 #include "editaddressdialog.h"
 #include "optionsmodel.h"
+#include "guiutil.h"
 
 #include <QScrollBar>
 #include <QComboBox>
@@ -123,12 +124,14 @@ TransactionView::TransactionView(QWidget *parent) :
     // Actions
     QAction *copyAddressAction = new QAction(tr("Copy address"), this);
     QAction *copyLabelAction = new QAction(tr("Copy label"), this);
+    QAction *copyAmountAction = new QAction(tr("Copy amount"), this);
     QAction *editLabelAction = new QAction(tr("Edit label"), this);
     QAction *showDetailsAction = new QAction(tr("Show details..."), this);
 
     contextMenu = new QMenu();
     contextMenu->addAction(copyAddressAction);
     contextMenu->addAction(copyLabelAction);
+    contextMenu->addAction(copyAmountAction);
     contextMenu->addAction(editLabelAction);
     contextMenu->addAction(showDetailsAction);
 
@@ -139,14 +142,11 @@ TransactionView::TransactionView(QWidget *parent) :
     connect(amountWidget, SIGNAL(textChanged(QString)), this, SLOT(changedAmount(QString)));
 
     connect(view, SIGNAL(doubleClicked(QModelIndex)), this, SIGNAL(doubleClicked(QModelIndex)));
-
-    connect(view,
-            SIGNAL(customContextMenuRequested(QPoint)),
-            this,
-            SLOT(contextualMenu(QPoint)));
+    connect(view, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(contextualMenu(QPoint)));
 
     connect(copyAddressAction, SIGNAL(triggered()), this, SLOT(copyAddress()));
     connect(copyLabelAction, SIGNAL(triggered()), this, SLOT(copyLabel()));
+    connect(copyAmountAction, SIGNAL(triggered()), this, SLOT(copyAmount()));
     connect(editLabelAction, SIGNAL(triggered()), this, SLOT(editLabel()));
     connect(showDetailsAction, SIGNAL(triggered()), this, SLOT(showDetails()));
 }
@@ -302,24 +302,17 @@ void TransactionView::contextualMenu(const QPoint &point)
 
 void TransactionView::copyAddress()
 {
-    if(!transactionView->selectionModel())
-        return;
-    QModelIndexList selection = transactionView->selectionModel()->selectedRows();
-    if(!selection.isEmpty())
-    {
-        QApplication::clipboard()->setText(selection.at(0).data(TransactionTableModel::AddressRole).toString());
-    }
+    GUIUtil::copyEntryData(transactionView, 0, TransactionTableModel::AddressRole);
 }
 
 void TransactionView::copyLabel()
 {
-    if(!transactionView->selectionModel())
-        return;
-    QModelIndexList selection = transactionView->selectionModel()->selectedRows();
-    if(!selection.isEmpty())
-    {
-        QApplication::clipboard()->setText(selection.at(0).data(TransactionTableModel::LabelRole).toString());
-    }
+    GUIUtil::copyEntryData(transactionView, 0, TransactionTableModel::LabelRole);
+}
+
+void TransactionView::copyAmount()
+{
+    GUIUtil::copyEntryData(transactionView, 0, TransactionTableModel::FormattedAmountRole);
 }
 
 void TransactionView::editLabel()

src/qt/transactionview.h

@@ -60,6 +60,11 @@ private:
 private slots:
     void contextualMenu(const QPoint &);
     void dateRangeChanged();
+    void showDetails();
+    void copyAddress();
+    void editLabel();
+    void copyLabel();
+    void copyAmount();
 
 signals:
     void doubleClicked(const QModelIndex&);
@@ -70,10 +75,6 @@ public slots:
     void changedPrefix(const QString &prefix);
     void changedAmount(const QString &amount);
     void exportClicked();
-    void showDetails();
-    void copyAddress();
-    void editLabel();
-    void copyLabel();
 
 };