iOS: add support for submenus

Change-Id: I3816f2518125ad9c013ab578853295bf2c6bd02e
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>

src/plugins/platforms/ios/qiosmenu.h

@@ -49,6 +49,7 @@
 
 #import "quiview.h"
 
+class QIOSMenu;
 @class QUIMenuController;
 @class QUIPickerView;
 
@@ -62,7 +63,7 @@ public:
 
     void setText(const QString &text) Q_DECL_OVERRIDE;
     void setIcon(const QIcon &) Q_DECL_OVERRIDE {}
-    void setMenu(QPlatformMenu *) Q_DECL_OVERRIDE {}
+    void setMenu(QPlatformMenu *) Q_DECL_OVERRIDE;
     void setVisible(bool isVisible) Q_DECL_OVERRIDE;
     void setIsSeparator(bool) Q_DECL_OVERRIDE;
     void setFont(const QFont &) Q_DECL_OVERRIDE {}
@@ -79,6 +80,7 @@ public:
     MenuRole m_role;
     bool m_enabled;
     bool m_separator;
+    QIOSMenu *m_menu;
 
 private:
     QString removeMnemonics(const QString &original);
@@ -112,6 +114,8 @@ public:
     QPlatformMenuItem *menuItemAt(int position) const Q_DECL_OVERRIDE;
     QPlatformMenuItem *menuItemForTag(quintptr tag) const Q_DECL_OVERRIDE;
 
+    void handleItemSelected(QIOSMenuItem *menuItem);
+
     static QIOSMenu *currentMenu() { return m_currentMenu; }
     static id menuActionTarget() { return m_currentMenu ? m_currentMenu->m_menuController : 0; }
 
@@ -126,6 +130,7 @@ private:
     QString m_text;
     MenuType m_menuType;
     MenuType m_effectiveMenuType;
+    QPointer<QWindow> m_parentWindow;
     QRect m_targetRect;
     const QIOSMenuItem *m_targetItem;
     QUIMenuController *m_menuController;

src/plugins/platforms/ios/qiosmenu.mm

@@ -107,9 +107,7 @@ static NSString *const kSelectorPrefix = @"_qtMenuItem_";
     NSString *selector = NSStringFromSelector(invocation.selector);
     NSRange range = NSMakeRange(kSelectorPrefix.length, selector.length - kSelectorPrefix.length - 1);
     NSInteger selectedIndex = [[selector substringWithRange:range] integerValue];
-
+    QIOSMenu::currentMenu()->handleItemSelected(m_visibleMenuItems.at(selectedIndex));
-    emit m_visibleMenuItems.at(selectedIndex)->activated();
-    QIOSMenu::currentMenu()->setVisible(false);
 }
 
 @end
@@ -195,8 +193,9 @@ static NSString *const kSelectorPrefix = @"_qtMenuItem_";
 - (void)closeMenu
 {
     if (!m_visibleMenuItems.isEmpty())
-        emit m_visibleMenuItems.at(m_selectedRow)->activated();
+        QIOSMenu::currentMenu()->handleItemSelected(m_visibleMenuItems.at(m_selectedRow));
-    QIOSMenu::currentMenu()->setVisible(false);
+    else
+        QIOSMenu::currentMenu()->setVisible(false);
 }
 
 - (void)cancelMenu
@@ -216,6 +215,7 @@ QIOSMenuItem::QIOSMenuItem()
     , m_role(MenuRole(0))
     , m_enabled(true)
     , m_separator(false)
+    , m_menu(0)
 {
 }
 
@@ -234,6 +234,11 @@ void QIOSMenuItem::setText(const QString &text)
     m_text = removeMnemonics(text);
 }
 
+void QIOSMenuItem::setMenu(QPlatformMenu *menu)
+{
+   m_menu = static_cast<QIOSMenu *>(menu);
+}
+
 void QIOSMenuItem::setVisible(bool isVisible)
 {
     m_visible = isVisible;
@@ -299,7 +304,7 @@ QIOSMenu::QIOSMenu()
     , m_text(QString())
     , m_menuType(DefaultMenu)
     , m_effectiveMenuType(DefaultMenu)
-    , m_targetRect(QRect(qGuiApp->primaryScreen()->availableGeometry().center(), QSize()))
+    , m_parentWindow(0)
     , m_targetItem(0)
     , m_menuController(0)
     , m_pickerView(0)
@@ -352,13 +357,27 @@ void QIOSMenu::setEnabled(bool enabled)
 
 void QIOSMenu::showPopup(const QWindow *parentWindow, const QRect &targetRect, const QPlatformMenuItem *item)
 {
-    if (!parentWindow->isActive())
+    m_parentWindow = const_cast<QWindow *>(parentWindow);
-        const_cast<QWindow *>(parentWindow)->requestActivate();
+    m_targetRect = targetRect;
-    m_targetRect = QRect(parentWindow->mapToGlobal(targetRect.topLeft()), targetRect.size());
     m_targetItem = static_cast<const QIOSMenuItem *>(item);
+
+    if (m_parentWindow && !m_parentWindow->isActive())
+        m_parentWindow->requestActivate();
+
     setVisible(true);
 }
 
+void QIOSMenu::handleItemSelected(QIOSMenuItem *menuItem)
+{
+    emit menuItem->activated();
+    setVisible(false);
+
+    if (QIOSMenu *menu = menuItem->m_menu) {
+        menu->setMenuType(m_effectiveMenuType);
+        menu->showPopup(m_parentWindow, m_targetRect, 0);
+    }
+}
+
 void QIOSMenu::dismiss()
 {
     setVisible(false);
@@ -504,7 +523,7 @@ void QIOSMenu::repositionMenu()
 {
     switch (m_effectiveMenuType) {
     case EditMenu: {
-        UIView *view = [UIApplication sharedApplication].keyWindow.rootViewController.view;
+        UIView *view = reinterpret_cast<UIView *>(m_parentWindow->winId());
         [[UIMenuController sharedMenuController] setTargetRect:toCGRect(m_targetRect) inView:view];
         [[UIMenuController sharedMenuController] setMenuVisible:YES animated:YES];
         break; }