screenshots: added support for minimal Screenshot ifc

For simple TabDialogs with minimal interface. That works, but found out
that for SD it's using a TabDialog with two TabPages with the same *.ui
file. To avoid problems for now, adapted to use PageIDs again, marked in
the code as to-be-changed.

Change-Id: I30af6367f4d3c1e9097b1fe3d2b230ab4eab5ed7

include/vcl/tabdlg.hxx

@@ -49,6 +49,10 @@ public:
     void                SetViewWindow( vcl::Window* pWindow ) { mpViewWindow = pWindow; }
     vcl::Window*        GetViewWindow() const { return mpViewWindow; }
     void                SetViewAlign( WindowAlign eAlign ) { meViewAlign = eAlign; }
+
+    // Screenshot interface
+    virtual std::vector<OString> getAllPageUIXMLDescriptions() const;
+    virtual bool selectPageByUIXMLDescription(const OString& rUIXMLDescription);
 };
 
 #endif // INCLUDED_VCL_TABDLG_HXX

vcl/source/app/settings.cxx

@@ -2374,6 +2374,8 @@ ImplMiscData::ImplMiscData()
     static const char* pEnv = getenv("SAL_DECIMALSEP_ENABLED" ); // set default without UI
     mbEnableLocalizedDecimalSep = (pEnv != nullptr);
     // Should we display any windows?
+
+    // need to hardly mask here for now, needs to be adapted of course...
     mbPseudoHeadless = false; // getenv("VCL_HIDE_WINDOWS") || comphelper::LibreOfficeKit::isActive();
 }
 

vcl/source/window/tabdlg.cxx

@@ -242,4 +242,98 @@ void TabDialog::StateChanged( StateChangedType nType )
     Dialog::StateChanged( nType );
 }
 
+vcl::Window* findTabControl(vcl::Window* pCurrent)
+{
+    if (!pCurrent)
+    {
+        return nullptr;
+    }
+
+    if (pCurrent->GetType() == WINDOW_TABCONTROL)
+    {
+        return pCurrent;
+    }
+
+    vcl::Window* pChild = pCurrent->GetWindow(GetWindowType::FirstChild);
+
+    while (pChild)
+    {
+
+        vcl::Window* pInorderChild = findTabControl(pChild);
+
+        if (pInorderChild)
+        {
+            return pInorderChild;
+        }
+
+        pChild = pChild->GetWindow(GetWindowType::Next);
+    }
+}
+
+std::vector<OString> TabDialog::getAllPageUIXMLDescriptions() const
+{
+    std::vector<OString> aRetval;
+
+    const TabControl* pTabCtrl = dynamic_cast<TabControl*>(findTabControl(const_cast<TabDialog*>(this)));
+
+    if (pTabCtrl)
+    {
+        for (sal_uInt16 a(0); a < pTabCtrl->GetPageCount(); a++)
+        {
+            const sal_uInt16 nPageId(pTabCtrl->GetPageId(a));
+
+            if (TAB_PAGE_NOTFOUND != nPageId)
+            {
+                TabPage* pCandidate = pTabCtrl->GetTabPage(nPageId);
+
+                if (pCandidate)
+                {
+                    // use UIXMLDescription (without '.ui', with '/')
+                    // aRetval.push_back(pCandidate->getUIFile());
+
+                    // for now, directly use nPageID since we had a case where
+                    // two TabPages had the same ui file (HeaderFooterDialog)
+                    aRetval.push_back(OString::number(nPageId));
+                }
+            }
+        }
+    }
+
+    return aRetval;
+}
+
+bool TabDialog::selectPageByUIXMLDescription(const OString& rUIXMLDescription)
+{
+    TabControl* pTabCtrl = dynamic_cast<TabControl*>(findTabControl(const_cast<TabDialog*>(this)));
+
+    if (pTabCtrl)
+    {
+        for (sal_uInt16 a(0); a < pTabCtrl->GetPageCount(); a++)
+        {
+            const sal_uInt16 nPageId(pTabCtrl->GetPageId(a));
+
+            if (TAB_PAGE_NOTFOUND != nPageId)
+            {
+                TabPage* pCandidate = pTabCtrl->GetTabPage(nPageId);
+
+                if (pCandidate)
+                {
+                    // if (pCandidate->getUIFile() == rUIXMLDescription)
+
+                    // for now, directly work with nPageID, see above. Will need to be
+                    // adapted to the schema later planned to be used in rUIXMLDescription
+                    if (rUIXMLDescription.toUInt32() == nPageId)
+                    {
+                        pTabCtrl->SelectTabPage(nPageId);
+
+                        return true;
+                    }
+                }
+            }
+        }
+    }
+
+    return false;
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */