From 393adf7acd8bfacaccb8b9543ce4d2b442608124 Mon Sep 17 00:00:00 2001
From: "Wladimir J. van der Laan" <laanwj@gmail.com>
Date: Wed, 6 Jul 2011 21:52:23 +0200
Subject: [PATCH] Address book: Disable "copy to clipboard" and "Delete"
 buttons when nothing selected

---
 src/qt/addressbookdialog.cpp | 47 ++++++++++++++++++++++++------------
 src/qt/addressbookdialog.h   |  3 ++-
 2 files changed, 34 insertions(+), 16 deletions(-)

diff --git a/src/qt/addressbookdialog.cpp b/src/qt/addressbookdialog.cpp
index 220679c9e..6d53ee865 100644
--- a/src/qt/addressbookdialog.cpp
+++ b/src/qt/addressbookdialog.cpp
@@ -23,6 +23,8 @@ AddressBookDialog::AddressBookDialog(Mode mode, QWidget *parent) :
         ui->sendTableView->setFocus();
         break;
     }
+
+    connect(ui->tabWidget, SIGNAL(currentChanged(int)), this, SLOT(selectionChanged()));
 }
 
 AddressBookDialog::~AddressBookDialog()
@@ -64,6 +66,11 @@ void AddressBookDialog::setModel(AddressTableModel *model)
     ui->sendTableView->horizontalHeader()->setResizeMode(
             AddressTableModel::Label, QHeaderView::Stretch);
 
+    connect(ui->receiveTableView->selectionModel(), SIGNAL(selectionChanged(QItemSelection,QItemSelection)),
+            this, SLOT(selectionChanged()));
+    connect(ui->sendTableView->selectionModel(), SIGNAL(selectionChanged(QItemSelection,QItemSelection)),
+            this, SLOT(selectionChanged()));
+
     if(mode == ForSending)
     {
         // Auto-select first row when in sending mode
@@ -74,7 +81,7 @@ void AddressBookDialog::setModel(AddressTableModel *model)
 void AddressBookDialog::setTab(int tab)
 {
     ui->tabWidget->setCurrentIndex(tab);
-    on_tabWidget_currentChanged(tab);
+    selectionChanged();
 }
 
 QTableView *AddressBookDialog::getCurrentTable()
@@ -114,20 +121,6 @@ void AddressBookDialog::on_newAddressButton_clicked()
     dlg.exec();
 }
 
-void AddressBookDialog::on_tabWidget_currentChanged(int index)
-{
-    // Enable/disable buttons based on selected tab
-    switch(index)
-    {
-    case SendingTab:
-        ui->deleteButton->setEnabled(true);
-        break;
-    case ReceivingTab:
-        ui->deleteButton->setEnabled(false);
-        break;
-    }
-}
-
 void AddressBookDialog::on_deleteButton_clicked()
 {
     QTableView *table = getCurrentTable();
@@ -158,3 +151,27 @@ void AddressBookDialog::on_buttonBox_accepted()
     }
 }
 
+void AddressBookDialog::selectionChanged()
+{
+    // Set button states based on selected tab and selection
+    QTableView *table = getCurrentTable();
+
+    if(table->selectionModel()->hasSelection())
+    {
+        switch(ui->tabWidget->currentIndex())
+        {
+        case SendingTab:
+            ui->deleteButton->setEnabled(true);
+            break;
+        case ReceivingTab:
+            ui->deleteButton->setEnabled(false);
+            break;
+        }
+        ui->copyToClipboard->setEnabled(true);
+    }
+    else
+    {
+        ui->deleteButton->setEnabled(false);
+        ui->copyToClipboard->setEnabled(false);
+    }
+}
diff --git a/src/qt/addressbookdialog.h b/src/qt/addressbookdialog.h
index fe243a62c..befa8b765 100644
--- a/src/qt/addressbookdialog.h
+++ b/src/qt/addressbookdialog.h
@@ -10,6 +10,7 @@ class AddressTableModel;
 
 QT_BEGIN_NAMESPACE
 class QTableView;
+class QItemSelection;
 QT_END_NAMESPACE
 
 class AddressBookDialog : public QDialog
@@ -44,9 +45,9 @@ private:
 private slots:
     void on_buttonBox_accepted();
     void on_deleteButton_clicked();
-    void on_tabWidget_currentChanged(int index);
     void on_newAddressButton_clicked();
     void on_copyToClipboard_clicked();
+    void selectionChanged();
 };
 
 #endif // ADDRESSBOOKDIALOG_H