Cocoa: Correct mouse event forwarding for popups

We need to track the active popup globally, having
parent windows track child popups is not sufficient
since there may be one or more intermediate windows
in between the event receiving window and popup window.

Add API to QOCocoaIntegration for tracking the global
popup window and use it instead of the per-window
tracking. Make sure to only close popups on clicks
outside the popup only. Add code to QNSView::handleMouseEvent
that redirects mouse events to the active popup.

Add manual test.

Change-Id: Ia3e3fd42d8fddf5c69f0c6879b333ca544521f61
Task-number: QTBUG-43464
Task-number: QTBUG-31937
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@theqtcompany.com>

2 files changed, 156 insertions, 0 deletions

diff --git a/tests/manual/cocoa/popups/main.cpp b/tests/manual/cocoa/popups/main.cpp
new file mode 100644
index 0000000000..46249d6772
--- /dev/null
+++ b/tests/manual/cocoa/popups/main.cpp
@@ -0,0 +1,152 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** As a special exception, The Qt Company gives you certain additional
+** rights. These rights are described in The Qt Company LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtWidgets>
+
+class Window : public QWidget
+{
+    Q_OBJECT
+
+public:
+    Window();
+
+public slots:
+   void triggered(QAction*);
+   void clean();
+   void showPoppWindow();
+
+private:
+    QLabel *explanation;
+   QToolButton *toolButton;
+   QMenu *menu;
+   QLineEdit *echo;
+   QComboBox *comboBox;
+   QPushButton *pushButton;
+};
+
+Window::Window()
+{
+   QGroupBox* group = new QGroupBox(tr("test the popup"));
+
+   explanation = new QLabel(
+       "This test is used to verify that popup windows will be closed "
+       "as expected. This includes when clicking outside the popup or moving the "
+       "parent window. Tested popups include context menus, combo box popups, tooltips "
+       "and QWindow with Qt::Popup set."
+   );
+   explanation->setWordWrap(true);
+   explanation->setToolTip("I'm a tool tip!");
+
+   menu = new QMenu(group);
+   menu->addAction(tr("line one"));
+   menu->addAction(tr("line two"));
+   menu->addAction(tr("line three"));
+   menu->addAction(tr("line four"));
+   menu->addAction(tr("line five"));
+
+   QMenu *subMenu1 = new QMenu();
+   subMenu1->addAction("1");
+   subMenu1->addAction("2");
+   subMenu1->addAction("3");
+   menu->addMenu(subMenu1);
+
+   QMenu *subMenu2 = new QMenu();
+   subMenu2->addAction("2 1");
+   subMenu2->addAction("2 2");
+   subMenu2->addAction("2 3");
+   menu->addMenu(subMenu2);
+
+   toolButton = new QToolButton(group);
+   toolButton->setMenu(menu);
+   toolButton->setPopupMode( QToolButton::MenuButtonPopup );
+   toolButton->setText("select me");
+
+   echo = new QLineEdit(group);
+   echo->setPlaceholderText("not triggered");
+
+   connect(menu, SIGNAL(triggered(QAction*)), this, SLOT(triggered(QAction*)));
+   connect(menu, SIGNAL(aboutToShow()), this, SLOT(clean()));
+
+   comboBox = new QComboBox();
+   comboBox->addItem("Item 1");
+   comboBox->addItem("Item 2");
+   comboBox->addItem("Item 3");
+
+   pushButton = new QPushButton("Show popup window");
+   connect(pushButton, SIGNAL(clicked()), this, SLOT(showPoppWindow()));
+
+   QVBoxLayout* layout = new QVBoxLayout;
+   layout->addWidget(explanation);
+   layout->addWidget(toolButton);
+   layout->addWidget(echo);
+   layout->addWidget(comboBox);
+   layout->addWidget(pushButton);
+
+   group ->setLayout(layout);
+   setLayout(layout);
+   setWindowTitle(tr("Popup Window Testing"));
+}
+
+void Window::clean()
+{
+   echo->setText("");
+}
+
+void Window::showPoppWindow()
+{
+    QWindow *window = new QWindow();
+    window->setTransientParent(this->windowHandle());
+    window->setPosition(this->pos());
+    window->setWidth(100);
+    window->setHeight(100);
+    window->setFlags(Qt::Window | Qt::Popup);
+    window->show();
+}
+
+void Window::triggered(QAction* act)
+{
+   if (!act)
+       return;
+   echo->setText(act->text());
+}
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+
+    Window window;
+    window.show();
+    return app.exec();
+}
+
+#include "main.moc"
diff --git a/tests/manual/cocoa/popups/popups.pro b/tests/manual/cocoa/popups/popups.pro
new file mode 100644
index 0000000000..d0a3d44171
--- /dev/null
+++ b/tests/manual/cocoa/popups/popups.pro
@@ -0,0 +1,4 @@
+QT += widgets
+
+SOURCES = main.cpp
+CONFIG -= app_bundle