dom/events/IMEContentObserver.h@97036ab72558 (annotated)
dom/events/IMEContentObserver.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 | /* vim: set ts=2 sw=2 et tw=80: */ |
| michael@0 | 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | #ifndef mozilla_IMEContentObserver_h_ |
| michael@0 | 8 | #define mozilla_IMEContentObserver_h_ |
| michael@0 | 9 | |
| michael@0 | 10 | #include "mozilla/Attributes.h" |
| michael@0 | 11 | #include "nsCOMPtr.h" |
| michael@0 | 12 | #include "nsCycleCollectionParticipant.h" |
| michael@0 | 13 | #include "nsIDocShell.h" // XXX Why does only this need to be included here? |
| michael@0 | 14 | #include "nsIReflowObserver.h" |
| michael@0 | 15 | #include "nsISelectionListener.h" |
| michael@0 | 16 | #include "nsIScrollObserver.h" |
| michael@0 | 17 | #include "nsIWidget.h" // for nsIMEUpdatePreference |
| michael@0 | 18 | #include "nsStubMutationObserver.h" |
| michael@0 | 19 | #include "nsWeakReference.h" |
| michael@0 | 20 | |
| michael@0 | 21 | class nsIContent; |
| michael@0 | 22 | class nsINode; |
| michael@0 | 23 | class nsISelection; |
| michael@0 | 24 | class nsPresContext; |
| michael@0 | 25 | |
| michael@0 | 26 | namespace mozilla { |
| michael@0 | 27 | |
| michael@0 | 28 | class EventStateManager; |
| michael@0 | 29 | |
| michael@0 | 30 | // IMEContentObserver notifies widget of any text and selection changes |
| michael@0 | 31 | // in the currently focused editor |
| michael@0 | 32 | class IMEContentObserver MOZ_FINAL : public nsISelectionListener, |
| michael@0 | 33 | public nsStubMutationObserver, |
| michael@0 | 34 | public nsIReflowObserver, |
| michael@0 | 35 | public nsIScrollObserver, |
| michael@0 | 36 | public nsSupportsWeakReference |
| michael@0 | 37 | { |
| michael@0 | 38 | public: |
| michael@0 | 39 | IMEContentObserver(); |
| michael@0 | 40 | |
| michael@0 | 41 | NS_DECL_CYCLE_COLLECTING_ISUPPORTS |
| michael@0 | 42 | NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(IMEContentObserver, |
| michael@0 | 43 | nsISelectionListener) |
| michael@0 | 44 | NS_DECL_NSISELECTIONLISTENER |
| michael@0 | 45 | NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED |
| michael@0 | 46 | NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED |
| michael@0 | 47 | NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED |
| michael@0 | 48 | NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED |
| michael@0 | 49 | NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTEWILLCHANGE |
| michael@0 | 50 | NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED |
| michael@0 | 51 | NS_DECL_NSIREFLOWOBSERVER |
| michael@0 | 52 | |
| michael@0 | 53 | // nsIScrollObserver |
| michael@0 | 54 | virtual void ScrollPositionChanged() MOZ_OVERRIDE; |
| michael@0 | 55 | |
| michael@0 | 56 | void Init(nsIWidget* aWidget, nsPresContext* aPresContext, |
| michael@0 | 57 | nsIContent* aContent); |
| michael@0 | 58 | void Destroy(); |
| michael@0 | 59 | /** |
| michael@0 | 60 | * IMEContentObserver is stored by EventStateManager during observing. |
| michael@0 | 61 | * DisconnectFromEventStateManager() is called when EventStateManager stops |
| michael@0 | 62 | * storing the instance. |
| michael@0 | 63 | */ |
| michael@0 | 64 | void DisconnectFromEventStateManager(); |
| michael@0 | 65 | bool IsManaging(nsPresContext* aPresContext, nsIContent* aContent); |
| michael@0 | 66 | bool IsEditorHandlingEventForComposition() const; |
| michael@0 | 67 | bool KeepAliveDuringDeactive() const |
| michael@0 | 68 | { |
| michael@0 | 69 | return mUpdatePreference.WantDuringDeactive(); |
| michael@0 | 70 | } |
| michael@0 | 71 | nsIWidget* GetWidget() const { return mWidget; } |
| michael@0 | 72 | nsresult GetSelectionAndRoot(nsISelection** aSelection, |
| michael@0 | 73 | nsIContent** aRoot) const; |
| michael@0 | 74 | |
| michael@0 | 75 | private: |
| michael@0 | 76 | void NotifyContentAdded(nsINode* aContainer, int32_t aStart, int32_t aEnd); |
| michael@0 | 77 | void ObserveEditableNode(); |
| michael@0 | 78 | |
| michael@0 | 79 | nsCOMPtr<nsIWidget> mWidget; |
| michael@0 | 80 | nsCOMPtr<nsISelection> mSelection; |
| michael@0 | 81 | nsCOMPtr<nsIContent> mRootContent; |
| michael@0 | 82 | nsCOMPtr<nsINode> mEditableNode; |
| michael@0 | 83 | nsCOMPtr<nsIDocShell> mDocShell; |
| michael@0 | 84 | |
| michael@0 | 85 | EventStateManager* mESM; |
| michael@0 | 86 | |
| michael@0 | 87 | nsIMEUpdatePreference mUpdatePreference; |
| michael@0 | 88 | uint32_t mPreAttrChangeLength; |
| michael@0 | 89 | }; |
| michael@0 | 90 | |
| michael@0 | 91 | } // namespace mozilla |
| michael@0 | 92 | |
| michael@0 | 93 | #endif // mozilla_IMEContentObserver_h_ |
