michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "nsCOMPtr.h"
michael@0: #include "nsIContainerBoxObject.h"
michael@0: #include "nsIBrowserBoxObject.h"
michael@0: #include "nsIEditorBoxObject.h"
michael@0: #include "nsIIFrameBoxObject.h"
michael@0: #include "nsBoxObject.h"
michael@0: #include "nsIDocShell.h"
michael@0: #include "nsIContent.h"
michael@0: #include "nsIDocument.h"
michael@0: #include "nsIFrame.h"
michael@0: #include "nsSubDocumentFrame.h"
michael@0: 
michael@0: /**
michael@0:  * nsContainerBoxObject implements deprecated nsIBrowserBoxObject,
michael@0:  * nsIEditorBoxObject and nsIIFrameBoxObject interfaces only because of the
michael@0:  * backward compatibility.
michael@0:  */
michael@0: 
michael@0: class nsContainerBoxObject : public nsBoxObject,
michael@0:                              public nsIBrowserBoxObject,
michael@0:                              public nsIEditorBoxObject,
michael@0:                              public nsIIFrameBoxObject
michael@0: {
michael@0: public:
michael@0:   NS_DECL_ISUPPORTS_INHERITED
michael@0:   NS_DECL_NSICONTAINERBOXOBJECT
michael@0:   NS_DECL_NSIBROWSERBOXOBJECT
michael@0:   NS_DECL_NSIEDITORBOXOBJECT
michael@0:   NS_DECL_NSIIFRAMEBOXOBJECT
michael@0: };
michael@0: 
michael@0: NS_INTERFACE_MAP_BEGIN(nsContainerBoxObject)
michael@0:   NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsIContainerBoxObject, nsIBrowserBoxObject)
michael@0:   NS_INTERFACE_MAP_ENTRY(nsIBrowserBoxObject)
michael@0:   NS_INTERFACE_MAP_ENTRY(nsIEditorBoxObject)
michael@0:   NS_INTERFACE_MAP_ENTRY(nsIIFrameBoxObject)
michael@0: NS_INTERFACE_MAP_END_INHERITING(nsBoxObject)
michael@0: 
michael@0: NS_IMPL_ADDREF_INHERITED(nsContainerBoxObject, nsBoxObject)
michael@0: NS_IMPL_RELEASE_INHERITED(nsContainerBoxObject, nsBoxObject)
michael@0: 
michael@0: NS_IMETHODIMP nsContainerBoxObject::GetDocShell(nsIDocShell** aResult)
michael@0: {
michael@0:   *aResult = nullptr;
michael@0: 
michael@0:   nsSubDocumentFrame *subDocFrame = do_QueryFrame(GetFrame(false));
michael@0:   if (subDocFrame) {
michael@0:     // Ok, the frame for mContent is an nsSubDocumentFrame, it knows how
michael@0:     // to reach the docshell, so ask it...
michael@0: 
michael@0:     return subDocFrame->GetDocShell(aResult);
michael@0:   }
michael@0: 
michael@0:   if (!mContent) {
michael@0:     return NS_OK;
michael@0:   }
michael@0:   
michael@0:   // No nsSubDocumentFrame available for mContent, try if there's a mapping
michael@0:   // between mContent's document to mContent's subdocument.
michael@0: 
michael@0:   // XXXbz sXBL/XBL2 issue -- ownerDocument or currentDocument?
michael@0:   nsIDocument *doc = mContent->GetDocument();
michael@0: 
michael@0:   if (!doc) {
michael@0:     return NS_OK;
michael@0:   }
michael@0:   
michael@0:   nsIDocument *sub_doc = doc->GetSubDocumentFor(mContent);
michael@0: 
michael@0:   if (!sub_doc) {
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   NS_IF_ADDREF(*aResult = sub_doc->GetDocShell());
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: NS_NewContainerBoxObject(nsIBoxObject** aResult)
michael@0: {
michael@0:   *aResult = new nsContainerBoxObject();
michael@0:   if (!*aResult)
michael@0:     return NS_ERROR_OUT_OF_MEMORY;
michael@0:   NS_ADDREF(*aResult);
michael@0:   return NS_OK;
michael@0: }
michael@0: