Fix tab focus in the widgets and QML webviews

Fixes:
- Make sure that we call SetInitialFocus when giving focus through Tab
  This does the same as would WebContents::FocusThroughTabTraversal
- Implement QWebEnginePagePrivate::passOnFocus
- Set each new RWHVQtDelegate as the focus proxy of the QWebEngineView
- Make sure that the widgets delegate accepts the tab focus policy

Cleaups:
- RenderWidgetHostViewQtDelegateQuick doesn't need to be a focus scope,
  it doesn't have any children
- We don't need to reimplement QQuickWebEngineView::forceActiveFocus
  since the view is now a focus scope
- Do not explicitly setFocus(true) on the QQuickWebEngineView,
  the application should decide this through the API

Change-Id: I817dc2c895d4fff4aa3536c71ecc5d306bb3bee0
Reviewed-by: Andras Becsi <andras.becsi@digia.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/core/render_widget_host_view_qt.cpp b/src/core/render_widget_host_view_qt.cpp
index 77588bc16..8e2b0db88 100644
--- a/src/core/render_widget_host_view_qt.cpp
+++ b/src/core/render_widget_host_view_qt.cpp
@@ -1085,6 +1085,11 @@ void RenderWidgetHostViewQt::handleFocusEvent(QFocusEvent *ev)
     if (ev->gotFocus()) {
         m_host->GotFocus();
         m_host->SetActive(true);
+        Q_ASSERT(m_host->IsRenderView());
+        if (ev->reason() == Qt::TabFocusReason)
+            static_cast<content::RenderViewHostImpl*>(m_host)->SetInitialFocus(false);
+        else if (ev->reason() == Qt::BacktabFocusReason)
+            static_cast<content::RenderViewHostImpl*>(m_host)->SetInitialFocus(true);
         ev->accept();
     } else if (ev->lostFocus()) {
         m_host->SetActive(false);