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