The Tor Browser / file comparison
comparison: layout/base/nsFrameManagerBase.h
layout/base/nsFrameManagerBase.h
- changeset 0
- 6474c204b198
equal
deleted
inserted
replaced
| -1:000000000000 | 0:94aca6b82b7b |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 2 * vim:cindent:ts=2:et:sw=2: | |
| 3 * | |
| 4 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 5 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 6 * file, You can obtain one at http://mozilla.org/MPL/2.0/. | |
| 7 * | |
| 8 * This Original Code has been modified by IBM Corporation. Modifications made | |
| 9 * by IBM described herein are Copyright (c) International Business Machines | |
| 10 * Corporation, 2000. Modifications to Mozilla code or documentation identified | |
| 11 * per MPL Section 3.3 | |
| 12 * | |
| 13 * Date Modified by Description of modification | |
| 14 * 04/20/2000 IBM Corp. OS/2 VisualAge build. | |
| 15 */ | |
| 16 | |
| 17 /* part of nsFrameManager, to work around header inclusionordering */ | |
| 18 | |
| 19 #ifndef _nsFrameManagerBase_h_ | |
| 20 #define _nsFrameManagerBase_h_ | |
| 21 | |
| 22 #include "pldhash.h" | |
| 23 | |
| 24 class nsIPresShell; | |
| 25 class nsStyleSet; | |
| 26 class nsIContent; | |
| 27 class nsPlaceholderFrame; | |
| 28 class nsIFrame; | |
| 29 class nsStyleContext; | |
| 30 class nsIAtom; | |
| 31 class nsStyleChangeList; | |
| 32 class nsILayoutHistoryState; | |
| 33 | |
| 34 class nsFrameManagerBase | |
| 35 { | |
| 36 public: | |
| 37 nsFrameManagerBase() | |
| 38 { | |
| 39 memset(this, '\0', sizeof(nsFrameManagerBase)); | |
| 40 } | |
| 41 | |
| 42 bool IsDestroyingFrames() { return mIsDestroyingFrames; } | |
| 43 | |
| 44 /* | |
| 45 * Gets and sets the root frame (typically the viewport). The lifetime of the | |
| 46 * root frame is controlled by the frame manager. When the frame manager is | |
| 47 * destroyed, it destroys the entire frame hierarchy. | |
| 48 */ | |
| 49 NS_HIDDEN_(nsIFrame*) GetRootFrame() const { return mRootFrame; } | |
| 50 NS_HIDDEN_(void) SetRootFrame(nsIFrame* aRootFrame) | |
| 51 { | |
| 52 NS_ASSERTION(!mRootFrame, "already have a root frame"); | |
| 53 mRootFrame = aRootFrame; | |
| 54 } | |
| 55 | |
| 56 static uint32_t GetGlobalGenerationNumber() { return sGlobalGenerationNumber; } | |
| 57 | |
| 58 protected: | |
| 59 class UndisplayedMap; | |
| 60 | |
| 61 // weak link, because the pres shell owns us | |
| 62 nsIPresShell* mPresShell; | |
| 63 // the pres shell owns the style set | |
| 64 nsStyleSet* mStyleSet; | |
| 65 nsIFrame* mRootFrame; | |
| 66 PLDHashTable mPlaceholderMap; | |
| 67 UndisplayedMap* mUndisplayedMap; | |
| 68 bool mIsDestroyingFrames; // The frame manager is destroying some frame(s). | |
| 69 | |
| 70 // The frame tree generation number | |
| 71 // We use this to avoid unnecessary screenshotting | |
| 72 // on Android. Unfortunately, this is static to match | |
| 73 // the single consumer which is also static. Keeping | |
| 74 // this the same greatly simplifies lifetime issues and | |
| 75 // makes sure we always using the correct number. | |
| 76 // A per PresContext generation number is available | |
| 77 // via nsPresContext::GetDOMGeneration | |
| 78 static uint32_t sGlobalGenerationNumber; | |
| 79 }; | |
| 80 | |
| 81 #endif |
