tdf#116675 vcl tree list: toggle by label click (e.g. in AutoFilter)

Checkboxes in a tree list could be toggled only by clicking
on them, but not on the associated labels, despite UX guidelines
and interoperability requirements especially for AutoFilter usage
in the spreadsheet.

Note: Implemented only for generic VCL plugin. Testing on Linux:

SAL_USE_VCLPLUGIN=gen instdir/program/soffice

Co-authored-by: Tibor Nagy (NISZ)

Change-Id: Ibc3d42271a1be53a54e11dedf4ab3ab506d680cf
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/104414
Tested-by: László Németh <nemeth@numbertext.org>
Reviewed-by: László Németh <nemeth@numbertext.org>
(cherry picked from commit 2471d6f44c7e8ecbe86a90eeb593b899a08a7408)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/114287
Tested-by: Gabor Kelemen <kelemen.gabor2@nisz.hu>
Reviewed-by: Gabor Kelemen <kelemen.gabor2@nisz.hu>

1 files changed, 23 insertions, 0 deletions

diff --git a/vcl/source/treelist/treelistbox.cxx b/vcl/source/treelist/treelistbox.cxx
index bb52e28fe0d4..bbece8b674d9 100644
--- a/vcl/source/treelist/treelistbox.cxx
+++ b/vcl/source/treelist/treelistbox.cxx
@@ -2329,6 +2329,29 @@ void SvTreeListBox::MouseButtonDown( const MouseEvent& rMEvt )
 
 void SvTreeListBox::MouseButtonUp( const MouseEvent& rMEvt )
 {
+    // tdf#116675 clicking on an entry should toggle its checkbox
+    if (rMEvt.IsLeft() && (nTreeFlags & SvTreeFlags::CHKBTN))
+    {
+        const Point aPnt = rMEvt.GetPosPixel();
+        SvTreeListEntry* pEntry = GetEntry(aPnt);
+        if (pEntry && pEntry->m_Items.size() > 0)
+        {
+            SvLBoxItem* pItem = GetItem(pEntry, aPnt.X());
+            // if the checkbox button was clicked, that will be toggled later, do not toggle here
+            // anyway users probably don't want to toggle the checkbox by clickink on another button
+            if (!pItem || pItem->GetType() != SvLBoxItemType::Button)
+            {
+                SvLBoxButton* pItemCheckBox
+                    = static_cast<SvLBoxButton*>(pEntry->GetFirstItem(SvLBoxItemType::Button));
+                if (pItemCheckBox)
+                {
+                    pItemCheckBox->ClickHdl(pEntry);
+                    InvalidateEntry(pEntry);
+                }
+            }
+        }
+    }
+
     pImpl->MouseButtonUp( rMEvt );
 }