nsTraversal.h (1454B)
1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */ 3 /* This Source Code Form is subject to the terms of the Mozilla Public 4 * License, v. 2.0. If a copy of the MPL was not distributed with this 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 6 7 /* 8 * Implementation of common traversal methods for TreeWalker and NodeIterator. 9 */ 10 11 #ifndef nsTraversal_h___ 12 #define nsTraversal_h___ 13 14 #include "mozilla/dom/CallbackObject.h" 15 #include "mozilla/dom/NodeFilterBinding.h" 16 #include "nsCOMPtr.h" 17 18 class nsINode; 19 20 namespace mozilla { 21 class ErrorResult; 22 } 23 24 class nsTraversal { 25 public: 26 nsTraversal(nsINode* aRoot, uint32_t aWhatToShow, 27 mozilla::dom::NodeFilter* aFilter); 28 virtual ~nsTraversal(); 29 30 protected: 31 nsCOMPtr<nsINode> mRoot; 32 uint32_t mWhatToShow; 33 RefPtr<mozilla::dom::NodeFilter> mFilter; 34 bool mInAcceptNode; 35 36 /* 37 * Tests if and how a node should be filtered. Uses mWhatToShow and 38 * mFilter to test the node. 39 * @param aNode Node to test 40 * @param aResult Whether we succeeded 41 * @param aUnskippedNode If non-null is passed, set to aNode if node isn't 42 * filtered out by mWhatToShow. 43 * @returns Filtervalue. See NodeFilter.webidl 44 */ 45 int16_t TestNode(nsINode* aNode, mozilla::ErrorResult& aResult, 46 nsCOMPtr<nsINode>* aUnskippedNode = nullptr); 47 }; 48 49 #endif