The Tor Browser: layout/xul/nsLeafBoxFrame.h@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     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 #ifndef nsLeafBoxFrame_h___

     6 #define nsLeafBoxFrame_h___

     8 #include "mozilla/Attributes.h"

     9 #include "nsLeafFrame.h"

    10 #include "nsBox.h"

    12 class nsAccessKeyInfo;

    14 class nsLeafBoxFrame : public nsLeafFrame

    15 {

    16 public:

    17   NS_DECL_FRAMEARENA_HELPERS

    19   friend nsIFrame* NS_NewLeafBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);

    21   virtual nsSize GetPrefSize(nsBoxLayoutState& aState) MOZ_OVERRIDE;

    22   virtual nsSize GetMinSize(nsBoxLayoutState& aState) MOZ_OVERRIDE;

    23   virtual nsSize GetMaxSize(nsBoxLayoutState& aState) MOZ_OVERRIDE;

    24   virtual nscoord GetFlex(nsBoxLayoutState& aState) MOZ_OVERRIDE;

    25   virtual nscoord GetBoxAscent(nsBoxLayoutState& aState) MOZ_OVERRIDE;

    27   virtual nsIAtom* GetType() const MOZ_OVERRIDE;

    28   virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE

    29   {

    30     // This is bogus, but it's what we've always done.

    31     // Note that nsLeafFrame is also eReplacedContainsBlock.

    32     return nsLeafFrame::IsFrameOfType(aFlags &

    33       ~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock | nsIFrame::eXULBox));

    34   }

    36 #ifdef DEBUG_FRAME_DUMP

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

    38 #endif

    40   // nsIHTMLReflow overrides

    42   virtual void MarkIntrinsicWidthsDirty() MOZ_OVERRIDE;

    43   virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;

    44   virtual nscoord GetPrefWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;

    46   // Our auto size is that provided by nsFrame, not nsLeafFrame

    47   virtual nsSize ComputeAutoSize(nsRenderingContext *aRenderingContext,

    48                                  nsSize aCBSize, nscoord aAvailableWidth,

    49                                  nsSize aMargin, nsSize aBorder,

    50                                  nsSize aPadding, bool aShrinkWrap) MOZ_OVERRIDE;

    52   virtual nsresult Reflow(nsPresContext*          aPresContext,

    53                           nsHTMLReflowMetrics&     aDesiredSize,

    54                           const nsHTMLReflowState& aReflowState,

    55                           nsReflowStatus&          aStatus) MOZ_OVERRIDE;

    57   virtual nsresult CharacterDataChanged(CharacterDataChangeInfo* aInfo) MOZ_OVERRIDE;

    59   virtual void Init(nsIContent*      aContent,

    60                     nsIFrame*        aParent,

    61                     nsIFrame*        asPrevInFlow) MOZ_OVERRIDE;

    63   virtual void BuildDisplayList(nsDisplayListBuilder*   aBuilder,

    64                                 const nsRect&           aDirtyRect,

    65                                 const nsDisplayListSet& aLists) MOZ_OVERRIDE;

    67   virtual nsresult AttributeChanged(int32_t aNameSpaceID,

    68                                     nsIAtom* aAttribute,

    69                                     int32_t aModType) MOZ_OVERRIDE;

    71   virtual bool ComputesOwnOverflowArea() MOZ_OVERRIDE { return false; }

    73 protected:

    75   NS_IMETHOD DoLayout(nsBoxLayoutState& aState) MOZ_OVERRIDE;

    77 #ifdef DEBUG_LAYOUT

    78   virtual void GetBoxName(nsAutoString& aName) MOZ_OVERRIDE;

    79 #endif

    81   virtual nscoord GetIntrinsicWidth() MOZ_OVERRIDE;

    83  nsLeafBoxFrame(nsIPresShell* aShell, nsStyleContext* aContext);

    85 private:

    87  void UpdateMouseThrough();

    90 }; // class nsLeafBoxFrame

    92 #endif /* nsLeafBoxFrame_h___ */

The Tor Browser / file revision

layout/xul/nsLeafBoxFrame.h@97036ab72558

layout/xul/nsLeafBoxFrame.h