content/base/src/nsTraversal.cpp@deefc01c0e14 (annotated)
content/base/src/nsTraversal.cpp
Thu, 15 Jan 2015 21:03:48 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 21:03:48 +0100
- branch
- TOR_BUG_9701
- changeset 11
- deefc01c0e14
- permissions
- -rw-r--r--
Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- |
| michael@0 | 2 | * |
| 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 | #include "nsTraversal.h" |
| michael@0 | 8 | |
| michael@0 | 9 | #include "nsIDOMNode.h" |
| michael@0 | 10 | #include "nsError.h" |
| michael@0 | 11 | #include "nsINode.h" |
| michael@0 | 12 | #include "mozilla/AutoRestore.h" |
| michael@0 | 13 | |
| michael@0 | 14 | #include "nsGkAtoms.h" |
| michael@0 | 15 | |
| michael@0 | 16 | using namespace mozilla; |
| michael@0 | 17 | using namespace mozilla::dom; |
| michael@0 | 18 | |
| michael@0 | 19 | nsTraversal::nsTraversal(nsINode *aRoot, |
| michael@0 | 20 | uint32_t aWhatToShow, |
| michael@0 | 21 | const NodeFilterHolder &aFilter) : |
| michael@0 | 22 | mRoot(aRoot), |
| michael@0 | 23 | mWhatToShow(aWhatToShow), |
| michael@0 | 24 | mFilter(aFilter), |
| michael@0 | 25 | mInAcceptNode(false) |
| michael@0 | 26 | { |
| michael@0 | 27 | NS_ASSERTION(aRoot, "invalid root in call to nsTraversal constructor"); |
| michael@0 | 28 | } |
| michael@0 | 29 | |
| michael@0 | 30 | nsTraversal::~nsTraversal() |
| michael@0 | 31 | { |
| michael@0 | 32 | /* destructor code */ |
| michael@0 | 33 | } |
| michael@0 | 34 | |
| michael@0 | 35 | /* |
| michael@0 | 36 | * Tests if and how a node should be filtered. Uses mWhatToShow and |
| michael@0 | 37 | * mFilter to test the node. |
| michael@0 | 38 | * @param aNode Node to test |
| michael@0 | 39 | * @param aResult Whether we succeeded |
| michael@0 | 40 | * @returns Filtervalue. See nsIDOMNodeFilter.idl |
| michael@0 | 41 | */ |
| michael@0 | 42 | int16_t |
| michael@0 | 43 | nsTraversal::TestNode(nsINode* aNode, mozilla::ErrorResult& aResult) |
| michael@0 | 44 | { |
| michael@0 | 45 | if (mInAcceptNode) { |
| michael@0 | 46 | aResult.Throw(NS_ERROR_DOM_INVALID_STATE_ERR); |
| michael@0 | 47 | return 0; |
| michael@0 | 48 | } |
| michael@0 | 49 | |
| michael@0 | 50 | uint16_t nodeType = aNode->NodeType(); |
| michael@0 | 51 | |
| michael@0 | 52 | if (nodeType <= 12 && !((1 << (nodeType-1)) & mWhatToShow)) { |
| michael@0 | 53 | return nsIDOMNodeFilter::FILTER_SKIP; |
| michael@0 | 54 | } |
| michael@0 | 55 | |
| michael@0 | 56 | if (!mFilter.GetISupports()) { |
| michael@0 | 57 | // No filter, just accept |
| michael@0 | 58 | return nsIDOMNodeFilter::FILTER_ACCEPT; |
| michael@0 | 59 | } |
| michael@0 | 60 | |
| michael@0 | 61 | if (mFilter.HasWebIDLCallback()) { |
| michael@0 | 62 | AutoRestore<bool> inAcceptNode(mInAcceptNode); |
| michael@0 | 63 | mInAcceptNode = true; |
| michael@0 | 64 | return mFilter.GetWebIDLCallback()-> |
| michael@0 | 65 | AcceptNode(*aNode, aResult, CallbackObject::eRethrowExceptions); |
| michael@0 | 66 | } |
| michael@0 | 67 | |
| michael@0 | 68 | nsCOMPtr<nsIDOMNode> domNode = do_QueryInterface(aNode); |
| michael@0 | 69 | AutoRestore<bool> inAcceptNode(mInAcceptNode); |
| michael@0 | 70 | mInAcceptNode = true; |
| michael@0 | 71 | int16_t filtered; |
| michael@0 | 72 | nsresult rv = mFilter.GetXPCOMCallback()->AcceptNode(domNode, &filtered); |
| michael@0 | 73 | if (NS_FAILED(rv)) { |
| michael@0 | 74 | aResult.Throw(rv); |
| michael@0 | 75 | } |
| michael@0 | 76 | return filtered; |
| michael@0 | 77 | } |
