Handle initial TabControl and border window

ImplGetSubChildWindow has special code to handle a TabControl and
its pages. If the function finds a TabControl as a child it'll
return its window and then recurse into the current page.
This currently breaks in the case where the initial parent is a
TabControl. where the function will walk all of the tab pages.

The function also ignores border windows, but not if the initial
parent is a border window.

This patch correctly handles both cases and as a bonus drops all
the special page handling during child iteration.

Change-Id: Ie8699dae8d08628b66b33e0704237b9e219874bc
Reviewed-on: https://gerrit.libreoffice.org/61037
Tested-by: Jenkins
Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>

1 files changed, 7 insertions, 0 deletions

diff --git a/include/vcl/layout.hxx b/include/vcl/layout.hxx
index 0f8818989268..22d494dfa6e2 100644
--- a/include/vcl/layout.hxx
+++ b/include/vcl/layout.hxx
@@ -769,6 +769,13 @@ public:
 //of children
 VCL_DLLPUBLIC vcl::Window* firstLogicalChildOfParent(const vcl::Window *pTopLevel);
 
+//Get last window of a pTopLevel window as
+//if any intermediate layout widgets didn't exist
+//i.e. acts like pChild = pChild->GetWindow(GetWindowType::LastChild);
+//in a flat hierarchy where dialogs only have one layer
+//of children
+VCL_DLLPUBLIC vcl::Window* lastLogicalChildOfParent(const vcl::Window *pTopLevel);
+
 //Get next window after pChild of a pTopLevel window as
 //if any intermediate layout widgets didn't exist
 //i.e. acts like pChild = pChild->GetWindow(GetWindowType::Next);