dom/smil/nsSMILTargetIdentifier.h@97036ab72558 (annotated)
dom/smil/nsSMILTargetIdentifier.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
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.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #ifndef NS_SMILTARGETIDENTIFIER_H_ |
| michael@0 | 7 | #define NS_SMILTARGETIDENTIFIER_H_ |
| michael@0 | 8 | |
| michael@0 | 9 | #include "mozilla/dom/Element.h" |
| michael@0 | 10 | #include "nsAutoPtr.h" |
| michael@0 | 11 | |
| michael@0 | 12 | /** |
| michael@0 | 13 | * Struct: nsSMILTargetIdentifier |
| michael@0 | 14 | * |
| michael@0 | 15 | * Tuple of: { Animated Element, Attribute Name, Attribute Type (CSS vs. XML) } |
| michael@0 | 16 | * |
| michael@0 | 17 | * Used in nsSMILAnimationController as hash key for mapping an animation |
| michael@0 | 18 | * target to the nsSMILCompositor for that target. |
| michael@0 | 19 | * |
| michael@0 | 20 | * NOTE: Need a nsRefPtr for the element & attribute name, because |
| michael@0 | 21 | * nsSMILAnimationController retain its hash table for one sample into the |
| michael@0 | 22 | * future, and we need to make sure their target isn't deleted in that time. |
| michael@0 | 23 | */ |
| michael@0 | 24 | |
| michael@0 | 25 | struct nsSMILTargetIdentifier |
| michael@0 | 26 | { |
| michael@0 | 27 | nsSMILTargetIdentifier() |
| michael@0 | 28 | : mElement(nullptr), mAttributeName(nullptr), |
| michael@0 | 29 | mAttributeNamespaceID(kNameSpaceID_Unknown), mIsCSS(false) {} |
| michael@0 | 30 | |
| michael@0 | 31 | inline bool Equals(const nsSMILTargetIdentifier& aOther) const |
| michael@0 | 32 | { |
| michael@0 | 33 | return (aOther.mElement == mElement && |
| michael@0 | 34 | aOther.mAttributeName == mAttributeName && |
| michael@0 | 35 | aOther.mAttributeNamespaceID == mAttributeNamespaceID && |
| michael@0 | 36 | aOther.mIsCSS == mIsCSS); |
| michael@0 | 37 | } |
| michael@0 | 38 | |
| michael@0 | 39 | nsRefPtr<mozilla::dom::Element> mElement; |
| michael@0 | 40 | nsRefPtr<nsIAtom> mAttributeName; |
| michael@0 | 41 | int32_t mAttributeNamespaceID; |
| michael@0 | 42 | bool mIsCSS; |
| michael@0 | 43 | }; |
| michael@0 | 44 | |
| michael@0 | 45 | /** |
| michael@0 | 46 | * Class: nsSMILWeakTargetIdentifier |
| michael@0 | 47 | * |
| michael@0 | 48 | * Version of the above struct that uses non-owning pointers. These are kept |
| michael@0 | 49 | * private, to ensure that they aren't ever dereferenced (or used at all, |
| michael@0 | 50 | * outside of Equals()). |
| michael@0 | 51 | * |
| michael@0 | 52 | * This is solely for comparisons to determine if a target has changed |
| michael@0 | 53 | * from one sample to the next. |
| michael@0 | 54 | */ |
| michael@0 | 55 | class nsSMILWeakTargetIdentifier |
| michael@0 | 56 | { |
| michael@0 | 57 | public: |
| michael@0 | 58 | // Trivial constructor |
| michael@0 | 59 | nsSMILWeakTargetIdentifier() |
| michael@0 | 60 | : mElement(nullptr), mAttributeName(nullptr), mIsCSS(false) {} |
| michael@0 | 61 | |
| michael@0 | 62 | // Allow us to update a weak identifier to match a given non-weak identifier |
| michael@0 | 63 | nsSMILWeakTargetIdentifier& |
| michael@0 | 64 | operator=(const nsSMILTargetIdentifier& aOther) |
| michael@0 | 65 | { |
| michael@0 | 66 | mElement = aOther.mElement; |
| michael@0 | 67 | mAttributeName = aOther.mAttributeName; |
| michael@0 | 68 | mIsCSS = aOther.mIsCSS; |
| michael@0 | 69 | return *this; |
| michael@0 | 70 | } |
| michael@0 | 71 | |
| michael@0 | 72 | // Allow for comparison vs. non-weak identifier |
| michael@0 | 73 | inline bool Equals(const nsSMILTargetIdentifier& aOther) const |
| michael@0 | 74 | { |
| michael@0 | 75 | return (aOther.mElement == mElement && |
| michael@0 | 76 | aOther.mAttributeName == mAttributeName && |
| michael@0 | 77 | aOther.mIsCSS == mIsCSS); |
| michael@0 | 78 | } |
| michael@0 | 79 | |
| michael@0 | 80 | private: |
| michael@0 | 81 | const nsIContent* mElement; |
| michael@0 | 82 | const nsIAtom* mAttributeName; |
| michael@0 | 83 | bool mIsCSS; |
| michael@0 | 84 | }; |
| michael@0 | 85 | |
| michael@0 | 86 | #endif // NS_SMILTARGETIDENTIFIER_H_ |
