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comparison: dom/xbl/nsXBLWindowKeyHandler.h
dom/xbl/nsXBLWindowKeyHandler.h
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| 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 | |
| 6 #ifndef nsXBLWindowKeyHandler_h__ | |
| 7 #define nsXBLWindowKeyHandler_h__ | |
| 8 | |
| 9 #include "nsWeakPtr.h" | |
| 10 #include "nsIDOMEventListener.h" | |
| 11 | |
| 12 class nsIAtom; | |
| 13 class nsIDOMElement; | |
| 14 class nsIDOMKeyEvent; | |
| 15 class nsXBLSpecialDocInfo; | |
| 16 class nsXBLPrototypeHandler; | |
| 17 | |
| 18 namespace mozilla { | |
| 19 namespace dom { | |
| 20 class Element; | |
| 21 class EventTarget; | |
| 22 } | |
| 23 } | |
| 24 | |
| 25 class nsXBLWindowKeyHandler : public nsIDOMEventListener | |
| 26 { | |
| 27 public: | |
| 28 nsXBLWindowKeyHandler(nsIDOMElement* aElement, mozilla::dom::EventTarget* aTarget); | |
| 29 virtual ~nsXBLWindowKeyHandler(); | |
| 30 | |
| 31 NS_DECL_ISUPPORTS | |
| 32 NS_DECL_NSIDOMEVENTLISTENER | |
| 33 | |
| 34 protected: | |
| 35 nsresult WalkHandlers(nsIDOMKeyEvent* aKeyEvent, nsIAtom* aEventType); | |
| 36 | |
| 37 // walk the handlers, looking for one to handle the event | |
| 38 bool WalkHandlersInternal(nsIDOMKeyEvent* aKeyEvent, | |
| 39 nsIAtom* aEventType, | |
| 40 nsXBLPrototypeHandler* aHandler, | |
| 41 bool aExecute); | |
| 42 | |
| 43 // walk the handlers for aEvent, aCharCode and aIgnoreShiftKey. Execute it | |
| 44 // if aExecute = true. | |
| 45 bool WalkHandlersAndExecute(nsIDOMKeyEvent* aKeyEvent, nsIAtom* aEventType, | |
| 46 nsXBLPrototypeHandler* aHandler, | |
| 47 uint32_t aCharCode, bool aIgnoreShiftKey, | |
| 48 bool aExecute); | |
| 49 | |
| 50 // HandleEvent function for the capturing phase. | |
| 51 void HandleEventOnCapture(nsIDOMKeyEvent* aEvent); | |
| 52 | |
| 53 // Check if any handler would handle the given event. | |
| 54 bool HasHandlerForEvent(nsIDOMKeyEvent* aEvent); | |
| 55 | |
| 56 // lazily load the handlers. Overridden to handle being attached | |
| 57 // to a particular element rather than the document | |
| 58 nsresult EnsureHandlers(); | |
| 59 | |
| 60 // check if the given handler cares about the given key event | |
| 61 bool EventMatched(nsXBLPrototypeHandler* inHandler, nsIAtom* inEventType, | |
| 62 nsIDOMKeyEvent* inEvent, uint32_t aCharCode, | |
| 63 bool aIgnoreShiftKey); | |
| 64 | |
| 65 // Is an HTML editable element focused | |
| 66 bool IsHTMLEditableFieldFocused(); | |
| 67 | |
| 68 // Returns the element which was passed as a parameter to the constructor, | |
| 69 // unless the element has been removed from the document. Optionally returns | |
| 70 // whether the disabled attribute is set on the element (assuming the element | |
| 71 // is non-null). | |
| 72 already_AddRefed<mozilla::dom::Element> GetElement(bool* aIsDisabled = nullptr); | |
| 73 // Using weak pointer to the DOM Element. | |
| 74 nsWeakPtr mWeakPtrForElement; | |
| 75 mozilla::dom::EventTarget* mTarget; // weak ref | |
| 76 | |
| 77 // these are not owning references; the prototype handlers are owned | |
| 78 // by the prototype bindings which are owned by the docinfo. | |
| 79 nsXBLPrototypeHandler* mHandler; // platform bindings | |
| 80 nsXBLPrototypeHandler* mUserHandler; // user-specific bindings | |
| 81 | |
| 82 // holds document info about bindings | |
| 83 static nsXBLSpecialDocInfo* sXBLSpecialDocInfo; | |
| 84 static uint32_t sRefCnt; | |
| 85 }; | |
| 86 | |
| 87 already_AddRefed<nsXBLWindowKeyHandler> | |
| 88 NS_NewXBLWindowKeyHandler(nsIDOMElement* aElement, | |
| 89 mozilla::dom::EventTarget* aTarget); | |
| 90 | |
| 91 #endif |
