qt: Disable requests context menu actions when appropriate

The recent requests table will allow you to copy data points even if they do not exist.
This PR implements checks to disable the 'copy label', 'copy message', and 'copy amount' context menu action if the respective fields are empty.

1 files changed, 13 insertions, 4 deletions

diff --git a/src/qt/receivecoinsdialog.cpp b/src/qt/receivecoinsdialog.cpp
index 62adaa4e9f..0da12c84fd 100644
--- a/src/qt/receivecoinsdialog.cpp
+++ b/src/qt/receivecoinsdialog.cpp
@@ -45,9 +45,9 @@ ReceiveCoinsDialog::ReceiveCoinsDialog(const PlatformStyle *_platformStyle, QWid
     // context menu actions
     QAction *copyURIAction = new QAction(tr("Copy URI"), this);
     QAction* copyAddressAction = new QAction(tr("Copy address"), this);
-    QAction *copyLabelAction = new QAction(tr("Copy label"), this);
-    QAction *copyMessageAction = new QAction(tr("Copy message"), this);
-    QAction *copyAmountAction = new QAction(tr("Copy amount"), this);
+    copyLabelAction = new QAction(tr("Copy label"), this);
+    copyMessageAction = new QAction(tr("Copy message"), this);
+    copyAmountAction = new QAction(tr("Copy amount"), this);
 
     // context menu
     contextMenu = new QMenu(this);
@@ -269,9 +269,18 @@ void ReceiveCoinsDialog::copyColumnToClipboard(int column)
 // context menu
 void ReceiveCoinsDialog::showMenu(const QPoint &point)
 {
-    if (!selectedRow().isValid()) {
+    const QModelIndex sel = selectedRow();
+    if (!sel.isValid()) {
         return;
     }
+
+    // disable context menu actions when appropriate
+    const RecentRequestsTableModel* const submodel = model->getRecentRequestsTableModel();
+    const RecentRequestEntry& req = submodel->entry(sel.row());
+    copyLabelAction->setDisabled(req.recipient.label.isEmpty());
+    copyMessageAction->setDisabled(req.recipient.message.isEmpty());
+    copyAmountAction->setDisabled(req.recipient.amount == 0);
+
     contextMenu->exec(QCursor::pos());
 }