C++ (Cpp) ViewMap::empty Examples

Example #1

File: RenderFrameParent.cpp Project: mtelleria/bluegriffon-debian-packaging

void
RenderFrameParent::BuildViewMap()
{
  ViewMap newContentViews;
  // BuildViewMap assumes we have a primary frame, which may not be the case.
  if (GetRootLayer() && mFrameLoader->GetPrimaryFrameOfOwningContent()) {
    // Some of the content views in our hash map may no longer be active. To
    // tag them as inactive and to remove any chance of them using a dangling
    // pointer, we set mContentView to NULL.
    //
    // BuildViewMap will restore mFrameLoader if the content view is still
    // in our hash table.

    for (ViewMap::const_iterator iter = mContentViews.begin();
         iter != mContentViews.end();
         ++iter) {
      iter->second->mFrameLoader = NULL;
    }

    mozilla::layout::BuildViewMap(mContentViews, newContentViews, mFrameLoader, GetRootLayer());
  }

  // Here, we guarantee that *only* the root view is preserved in
  // case we couldn't build a new view map above. This is important because
  // the content view map should only contain the root view and content
  // views that are present in the layer tree.
  if (newContentViews.empty()) {
    newContentViews[FrameMetrics::ROOT_SCROLL_ID] =
      FindViewForId(mContentViews, FrameMetrics::ROOT_SCROLL_ID);
  }

  mContentViews = newContentViews;
}