/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #include "nsHTMLParts.h" #include "nsContainerFrame.h" #include "nsCSSRendering.h" #include "nsIDocument.h" #include "nsPageFrame.h" #include "nsIDOMEvent.h" #include "nsStyleConsts.h" #include "nsGkAtoms.h" #include "nsIPresShell.h" #include "nsBoxFrame.h" #include "nsStackLayout.h" #include "nsIAnonymousContentCreator.h" #include "mozilla/dom/NodeInfo.h" #include "nsIServiceManager.h" #include "nsNodeInfoManager.h" #include "nsContentCreatorFunctions.h" #include "nsContentUtils.h" #include "nsContentList.h" #include "mozilla/dom/Element.h" //#define DEBUG_REFLOW using namespace mozilla::dom; class nsDocElementBoxFrame : public nsBoxFrame, public nsIAnonymousContentCreator { public: virtual void DestroyFrom(nsIFrame* aDestructRoot) override; friend nsIFrame* NS_NewBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext); explicit nsDocElementBoxFrame(nsStyleContext* aContext) :nsBoxFrame(aContext, true) {} NS_DECL_QUERYFRAME NS_DECL_FRAMEARENA_HELPERS // nsIAnonymousContentCreator virtual nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements) override; virtual void AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements, uint32_t aFilter) override; virtual bool IsFrameOfType(uint32_t aFlags) const override { // Override nsBoxFrame. if (aFlags & (nsIFrame::eReplacedContainsBlock | nsIFrame::eReplaced)) return false; return nsBoxFrame::IsFrameOfType(aFlags); } #ifdef DEBUG_FRAME_DUMP virtual nsresult GetFrameName(nsAString& aResult) const override; #endif private: nsCOMPtr<Element> mPopupgroupContent; nsCOMPtr<Element> mTooltipContent; }; //---------------------------------------------------------------------- nsContainerFrame* NS_NewDocElementBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext) { return new (aPresShell) nsDocElementBoxFrame(aContext); } NS_IMPL_FRAMEARENA_HELPERS(nsDocElementBoxFrame) void nsDocElementBoxFrame::DestroyFrom(nsIFrame* aDestructRoot) { nsContentUtils::DestroyAnonymousContent(&mPopupgroupContent); nsContentUtils::DestroyAnonymousContent(&mTooltipContent); nsBoxFrame::DestroyFrom(aDestructRoot); } nsresult nsDocElementBoxFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements) { nsIDocument* doc = mContent->GetComposedDoc(); if (!doc) { // The page is currently being torn down. Why bother. return NS_ERROR_FAILURE; } nsNodeInfoManager *nodeInfoManager = doc->NodeInfoManager(); // create the top-secret popupgroup node. shhhhh! RefPtr<NodeInfo> nodeInfo; nodeInfo = nodeInfoManager->GetNodeInfo(nsGkAtoms::popupgroup, nullptr, kNameSpaceID_XUL, nsIDOMNode::ELEMENT_NODE); NS_ENSURE_TRUE(nodeInfo, NS_ERROR_OUT_OF_MEMORY); nsresult rv = NS_NewXULElement(getter_AddRefs(mPopupgroupContent), nodeInfo.forget()); NS_ENSURE_SUCCESS(rv, rv); if (!aElements.AppendElement(mPopupgroupContent)) return NS_ERROR_OUT_OF_MEMORY; // create the top-secret default tooltip node. shhhhh! nodeInfo = nodeInfoManager->GetNodeInfo(nsGkAtoms::tooltip, nullptr, kNameSpaceID_XUL, nsIDOMNode::ELEMENT_NODE); NS_ENSURE_TRUE(nodeInfo, NS_ERROR_OUT_OF_MEMORY); rv = NS_NewXULElement(getter_AddRefs(mTooltipContent), nodeInfo.forget()); NS_ENSURE_SUCCESS(rv, rv); mTooltipContent->SetAttr(kNameSpaceID_None, nsGkAtoms::_default, NS_LITERAL_STRING("true"), false); if (!aElements.AppendElement(mTooltipContent)) return NS_ERROR_OUT_OF_MEMORY; return NS_OK; } void nsDocElementBoxFrame::AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements, uint32_t aFilter) { if (mPopupgroupContent) { aElements.AppendElement(mPopupgroupContent); } if (mTooltipContent) { aElements.AppendElement(mTooltipContent); } } NS_QUERYFRAME_HEAD(nsDocElementBoxFrame) NS_QUERYFRAME_ENTRY(nsIAnonymousContentCreator) NS_QUERYFRAME_TAIL_INHERITING(nsBoxFrame) #ifdef DEBUG_FRAME_DUMP nsresult nsDocElementBoxFrame::GetFrameName(nsAString& aResult) const { return MakeFrameName(NS_LITERAL_STRING("DocElementBox"), aResult); } #endif