The Tor Browser: layout/xul/nsDocElementBoxFrame.cpp@deefc01c0e14

Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 #include "nsHTMLParts.h"

     6 #include "nsContainerFrame.h"

     7 #include "nsCSSRendering.h"

     8 #include "nsIDocument.h"

     9 #include "nsPageFrame.h"

    10 #include "nsIDOMEvent.h"

    11 #include "nsStyleConsts.h"

    12 #include "nsGkAtoms.h"

    13 #include "nsIPresShell.h"

    14 #include "nsBoxFrame.h"

    15 #include "nsStackLayout.h"

    16 #include "nsIAnonymousContentCreator.h"

    17 #include "nsINodeInfo.h"

    18 #include "nsIServiceManager.h"

    19 #include "nsNodeInfoManager.h"

    20 #include "nsContentCreatorFunctions.h"

    21 #include "nsContentUtils.h"

    22 #include "nsContentList.h"

    23 #include "mozilla/dom/Element.h"

    25 //#define DEBUG_REFLOW

    27 using namespace mozilla::dom;

    29 class nsDocElementBoxFrame : public nsBoxFrame,

    30                              public nsIAnonymousContentCreator

    31 {

    32 public:

    33   virtual void DestroyFrom(nsIFrame* aDestructRoot) MOZ_OVERRIDE;

    35   friend nsIFrame* NS_NewBoxFrame(nsIPresShell* aPresShell,

    36                                   nsStyleContext* aContext);

    38   nsDocElementBoxFrame(nsIPresShell* aShell, nsStyleContext* aContext)

    39     :nsBoxFrame(aShell, aContext, true) {}

    41   NS_DECL_QUERYFRAME

    42   NS_DECL_FRAMEARENA_HELPERS

    44   // nsIAnonymousContentCreator

    45   virtual nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements) MOZ_OVERRIDE;

    46   virtual void AppendAnonymousContentTo(nsBaseContentList& aElements,

    47                                         uint32_t aFilter) MOZ_OVERRIDE;

    49   virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE

    50   {

    51     // Override nsBoxFrame.

    52     if (aFlags & (nsIFrame::eReplacedContainsBlock | nsIFrame::eReplaced))

    53       return false;

    54     return nsBoxFrame::IsFrameOfType(aFlags);

    55   }

    57 #ifdef DEBUG_FRAME_DUMP

    58   virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE;

    59 #endif

    60 private:

    61   nsCOMPtr<Element> mPopupgroupContent;

    62   nsCOMPtr<Element> mTooltipContent;

    63 };

    65 //----------------------------------------------------------------------

    67 nsIFrame*

    68 NS_NewDocElementBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)

    69 {

    70   return new (aPresShell) nsDocElementBoxFrame (aPresShell, aContext);

    71 }

    73 NS_IMPL_FRAMEARENA_HELPERS(nsDocElementBoxFrame)

    75 void

    76 nsDocElementBoxFrame::DestroyFrom(nsIFrame* aDestructRoot)

    77 {

    78   nsContentUtils::DestroyAnonymousContent(&mPopupgroupContent);

    79   nsContentUtils::DestroyAnonymousContent(&mTooltipContent);

    80   nsBoxFrame::DestroyFrom(aDestructRoot);

    81 }

    83 nsresult

    84 nsDocElementBoxFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements)

    85 {

    86   nsIDocument* doc = mContent->GetDocument();

    87   if (!doc) {

    88     // The page is currently being torn down.  Why bother.

    89     return NS_ERROR_FAILURE;

    90   }

    91   nsNodeInfoManager *nodeInfoManager = doc->NodeInfoManager();

    93   // create the top-secret popupgroup node. shhhhh!

    94   nsCOMPtr<nsINodeInfo> nodeInfo;

    95   nodeInfo = nodeInfoManager->GetNodeInfo(nsGkAtoms::popupgroup,

    96                                           nullptr, kNameSpaceID_XUL,

    97                                           nsIDOMNode::ELEMENT_NODE);

    98   NS_ENSURE_TRUE(nodeInfo, NS_ERROR_OUT_OF_MEMORY);

   100   nsresult rv = NS_NewXULElement(getter_AddRefs(mPopupgroupContent),

   101                                  nodeInfo.forget());

   102   NS_ENSURE_SUCCESS(rv, rv);

   104   if (!aElements.AppendElement(mPopupgroupContent))

   105     return NS_ERROR_OUT_OF_MEMORY;

   107   // create the top-secret default tooltip node. shhhhh!

   108   nodeInfo = nodeInfoManager->GetNodeInfo(nsGkAtoms::tooltip, nullptr,

   109                                           kNameSpaceID_XUL,

   110                                           nsIDOMNode::ELEMENT_NODE);

   111   NS_ENSURE_TRUE(nodeInfo, NS_ERROR_OUT_OF_MEMORY);

   113   rv = NS_NewXULElement(getter_AddRefs(mTooltipContent), nodeInfo.forget());

   114   NS_ENSURE_SUCCESS(rv, rv);

   116   mTooltipContent->SetAttr(kNameSpaceID_None, nsGkAtoms::_default,

   117                            NS_LITERAL_STRING("true"), false);

   119   if (!aElements.AppendElement(mTooltipContent))

   120     return NS_ERROR_OUT_OF_MEMORY;

   122   return NS_OK;

   123 }

   125 void

   126 nsDocElementBoxFrame::AppendAnonymousContentTo(nsBaseContentList& aElements,

   127                                                uint32_t aFilter)

   128 {

   129   aElements.MaybeAppendElement(mPopupgroupContent);

   130   aElements.MaybeAppendElement(mTooltipContent);

   131 }

   133 NS_QUERYFRAME_HEAD(nsDocElementBoxFrame)

   134   NS_QUERYFRAME_ENTRY(nsIAnonymousContentCreator)

   135 NS_QUERYFRAME_TAIL_INHERITING(nsBoxFrame)

   137 #ifdef DEBUG_FRAME_DUMP

   138 nsresult

   139 nsDocElementBoxFrame::GetFrameName(nsAString& aResult) const

   140 {

   141   return MakeFrameName(NS_LITERAL_STRING("DocElementBox"), aResult);

   142 }

   143 #endif

The Tor Browser / file revision

layout/xul/nsDocElementBoxFrame.cpp@deefc01c0e14

layout/xul/nsDocElementBoxFrame.cpp