iOS: add native file dialog for selecing photos/assets

This will add a file dialog backend on iOS. The implementation
will check if a dialogs initial directory points to the system
picture location, and if so, present a UIImagePickerController.
Otherwise it will return false upon show, which causes
QFileDialog to use the widget based version as fallback.

Change-Id: I276b630911652b6d28f60763decc7ec38f00c817
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@theqtcompany.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/src/plugins/platforms/ios/qiostheme.mm b/src/plugins/platforms/ios/qiostheme.mm
index 6842cb3faa..29cd897b71 100644
--- a/src/plugins/platforms/ios/qiostheme.mm
+++ b/src/plugins/platforms/ios/qiostheme.mm
@@ -46,6 +46,7 @@
 #include <UIKit/UIInterface.h>
 
 #include "qiosmenu.h"
+#include "qiosfiledialog.h"
 
 QT_BEGIN_NAMESPACE
 
@@ -80,6 +81,27 @@ QPlatformMenu* QIOSTheme::createPlatformMenu() const
     return new QIOSMenu();
 }
 
+bool QIOSTheme::usePlatformNativeDialog(QPlatformTheme::DialogType type) const
+{
+    switch (type) {
+    case FileDialog:
+        return true;
+    default:
+        return false;
+    }
+}
+
+QPlatformDialogHelper *QIOSTheme::createPlatformDialogHelper(QPlatformTheme::DialogType type) const
+{
+    switch (type) {
+    case FileDialog:
+        return new QIOSFileDialog();
+        break;
+    default:
+        return 0;
+    }
+}
+
 QVariant QIOSTheme::themeHint(ThemeHint hint) const
 {
     switch (hint) {