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comparison: content/base/src/nsContentListDeclarations.h
content/base/src/nsContentListDeclarations.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 nsContentListDeclarations_h | |
| 7 #define nsContentListDeclarations_h | |
| 8 | |
| 9 #include <stdint.h> | |
| 10 #include "nsCOMPtr.h" | |
| 11 #include "nsStringFwd.h" | |
| 12 | |
| 13 class nsContentList; | |
| 14 class nsIAtom; | |
| 15 class nsIContent; | |
| 16 class nsINode; | |
| 17 | |
| 18 // Magic namespace id that means "match all namespaces". This is | |
| 19 // negative so it won't collide with actual namespace constants. | |
| 20 #define kNameSpaceID_Wildcard INT32_MIN | |
| 21 | |
| 22 // This is a callback function type that can be used to implement an | |
| 23 // arbitrary matching algorithm. aContent is the content that may | |
| 24 // match the list, while aNamespaceID, aAtom, and aData are whatever | |
| 25 // was passed to the list's constructor. | |
| 26 typedef bool (*nsContentListMatchFunc)(nsIContent* aContent, | |
| 27 int32_t aNamespaceID, | |
| 28 nsIAtom* aAtom, | |
| 29 void* aData); | |
| 30 | |
| 31 typedef void (*nsContentListDestroyFunc)(void* aData); | |
| 32 | |
| 33 /** | |
| 34 * A function that allocates the matching data for this | |
| 35 * FuncStringContentList. Returning aString is perfectly fine; in | |
| 36 * that case the destructor function should be a no-op. | |
| 37 */ | |
| 38 typedef void* (*nsFuncStringContentListDataAllocator)(nsINode* aRootNode, | |
| 39 const nsString* aString); | |
| 40 | |
| 41 // If aMatchNameSpaceId is kNameSpaceID_Unknown, this will return a | |
| 42 // content list which matches ASCIIToLower(aTagname) against HTML | |
| 43 // elements in HTML documents and aTagname against everything else. | |
| 44 // For any other value of aMatchNameSpaceId, the list will match | |
| 45 // aTagname against all elements. | |
| 46 already_AddRefed<nsContentList> | |
| 47 NS_GetContentList(nsINode* aRootNode, | |
| 48 int32_t aMatchNameSpaceId, | |
| 49 const nsAString& aTagname); | |
| 50 | |
| 51 already_AddRefed<nsContentList> | |
| 52 NS_GetFuncStringNodeList(nsINode* aRootNode, | |
| 53 nsContentListMatchFunc aFunc, | |
| 54 nsContentListDestroyFunc aDestroyFunc, | |
| 55 nsFuncStringContentListDataAllocator aDataAllocator, | |
| 56 const nsAString& aString); | |
| 57 already_AddRefed<nsContentList> | |
| 58 NS_GetFuncStringHTMLCollection(nsINode* aRootNode, | |
| 59 nsContentListMatchFunc aFunc, | |
| 60 nsContentListDestroyFunc aDestroyFunc, | |
| 61 nsFuncStringContentListDataAllocator aDataAllocator, | |
| 62 const nsAString& aString); | |
| 63 | |
| 64 #endif // nsContentListDeclarations_h |
