From f7a553177d4b969956bc04a0140fce34958971f5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Barbosa?= <joao.paulo.barbosa@gmail.com>
Date: Mon, 30 Jul 2018 22:44:18 +0100
Subject: [PATCH 1/3] gui: Add GUIUtil::ItemDelegate with keyEscapePressed
 signal

---
 src/qt/guiutil.cpp | 11 +++++++++++
 src/qt/guiutil.h   | 13 +++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/src/qt/guiutil.cpp b/src/qt/guiutil.cpp
index 9dde2c392..955f5cdfe 100644
--- a/src/qt/guiutil.cpp
+++ b/src/qt/guiutil.cpp
@@ -49,6 +49,7 @@
 #include <QDoubleValidator>
 #include <QFileDialog>
 #include <QFont>
+#include <QKeyEvent>
 #include <QLineEdit>
 #include <QSettings>
 #include <QTextDocument> // for Qt::mightBeRichText
@@ -927,4 +928,14 @@ void ClickableProgressBar::mouseReleaseEvent(QMouseEvent *event)
     Q_EMIT clicked(event->pos());
 }
 
+bool ItemDelegate::eventFilter(QObject *object, QEvent *event)
+{
+    if (event->type() == QEvent::KeyPress) {
+        if (static_cast<QKeyEvent*>(event)->key() == Qt::Key_Escape) {
+            Q_EMIT keyEscapePressed();
+        }
+    }
+    return QItemDelegate::eventFilter(object, event);
+}
+
 } // namespace GUIUtil
diff --git a/src/qt/guiutil.h b/src/qt/guiutil.h
index 6aa65369f..5b32f03aa 100644
--- a/src/qt/guiutil.h
+++ b/src/qt/guiutil.h
@@ -10,6 +10,7 @@
 
 #include <QEvent>
 #include <QHeaderView>
+#include <QItemDelegate>
 #include <QMessageBox>
 #include <QObject>
 #include <QProgressBar>
@@ -232,6 +233,18 @@ namespace GUIUtil
 
     typedef ClickableProgressBar ProgressBar;
 
+    class ItemDelegate : public QItemDelegate
+    {
+        Q_OBJECT
+    public:
+        ItemDelegate(QObject* parent) : QItemDelegate(parent) {}
+
+    Q_SIGNALS:
+        void keyEscapePressed();
+
+    private:
+        bool eventFilter(QObject *object, QEvent *event);
+    };
 } // namespace GUIUtil
 
 #endif // BITCOIN_QT_GUIUTIL_H

From 4a43306a4f643cf0d356d5d5e16913541f1bc893 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Barbosa?= <joao.paulo.barbosa@gmail.com>
Date: Sat, 28 Jul 2018 23:45:05 +0100
Subject: [PATCH 2/3] gui: Reject edit address dialog when key escape is
 pressed

---
 src/qt/editaddressdialog.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/qt/editaddressdialog.cpp b/src/qt/editaddressdialog.cpp
index f26a31158..6e7520e01 100644
--- a/src/qt/editaddressdialog.cpp
+++ b/src/qt/editaddressdialog.cpp
@@ -39,6 +39,10 @@ EditAddressDialog::EditAddressDialog(Mode _mode, QWidget *parent) :
 
     mapper = new QDataWidgetMapper(this);
     mapper->setSubmitPolicy(QDataWidgetMapper::ManualSubmit);
+
+    GUIUtil::ItemDelegate* delegate = new GUIUtil::ItemDelegate(mapper);
+    connect(delegate, &GUIUtil::ItemDelegate::keyEscapePressed, this, &EditAddressDialog::reject);
+    mapper->setItemDelegate(delegate);
 }
 
 EditAddressDialog::~EditAddressDialog()

From 7bf22bf0c21d13557ec46a67413819ebcabc3df0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Barbosa?= <joao.paulo.barbosa@gmail.com>
Date: Mon, 30 Jul 2018 22:47:48 +0100
Subject: [PATCH 3/3] gui: Reject options dialog when key escape is pressed

---
 src/qt/optionsdialog.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/qt/optionsdialog.cpp b/src/qt/optionsdialog.cpp
index a57343f03..eea9a882b 100644
--- a/src/qt/optionsdialog.cpp
+++ b/src/qt/optionsdialog.cpp
@@ -115,6 +115,10 @@ OptionsDialog::OptionsDialog(QWidget *parent, bool enableWallet) :
     mapper->setSubmitPolicy(QDataWidgetMapper::ManualSubmit);
     mapper->setOrientation(Qt::Vertical);
 
+    GUIUtil::ItemDelegate* delegate = new GUIUtil::ItemDelegate(mapper);
+    connect(delegate, &GUIUtil::ItemDelegate::keyEscapePressed, this, &OptionsDialog::reject);
+    mapper->setItemDelegate(delegate);
+
     /* setup/change UI elements when proxy IPs are invalid/valid */
     ui->proxyIp->setCheckValidator(new ProxyAddressValidator(parent));
     ui->proxyIpTor->setCheckValidator(new ProxyAddressValidator(parent));