1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is the Mozilla SMIL module.
16 : *
17 : * The Initial Developer of the Original Code is Brian Birtles.
18 : * Portions created by the Initial Developer are Copyright (C) 2006
19 : * the Initial Developer. All Rights Reserved.
20 : *
21 : * Contributor(s):
22 : * Robert O'Callahan <roc+moz@cs.cmu.edu>
23 : * Brian Birtles <birtles@gmail.com>
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either of the GNU General Public License Version 2 or later (the "GPL"),
27 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28 : * in which case the provisions of the GPL or the LGPL are applicable instead
29 : * of those above. If you wish to allow use of your version of this file only
30 : * under the terms of either the GPL or the LGPL, and not to allow others to
31 : * use your version of this file under the terms of the MPL, indicate your
32 : * decision by deleting the provisions above and replace them with the notice
33 : * and other provisions required by the GPL or the LGPL. If you do not delete
34 : * the provisions above, a recipient may use your version of this file under
35 : * the terms of any one of the MPL, the GPL or the LGPL.
36 : *
37 : * ***** END LICENSE BLOCK ***** */
38 :
39 : #include "nsSMILNullType.h"
40 : #include "nsSMILValue.h"
41 : #include "nsDebug.h"
42 :
43 1464 : /*static*/ nsSMILNullType nsSMILNullType::sSingleton;
44 :
45 : nsresult
46 0 : nsSMILNullType::Assign(nsSMILValue& aDest, const nsSMILValue& aSrc) const
47 : {
48 0 : NS_PRECONDITION(aDest.mType == aSrc.mType, "Incompatible SMIL types");
49 0 : NS_PRECONDITION(aSrc.mType == this, "Unexpected source type");
50 0 : aDest.mU = aSrc.mU;
51 0 : aDest.mType = &sSingleton;
52 0 : return NS_OK;
53 : }
54 :
55 : bool
56 0 : nsSMILNullType::IsEqual(const nsSMILValue& aLeft,
57 : const nsSMILValue& aRight) const
58 : {
59 0 : NS_PRECONDITION(aLeft.mType == aRight.mType, "Incompatible SMIL types");
60 0 : NS_PRECONDITION(aLeft.mType == this, "Unexpected type for SMIL value");
61 :
62 0 : return true; // All null-typed values are equivalent.
63 : }
64 :
65 : nsresult
66 0 : nsSMILNullType::Add(nsSMILValue& aDest, const nsSMILValue& aValueToAdd,
67 : PRUint32 aCount) const
68 : {
69 0 : NS_NOTREACHED("Adding NULL type");
70 0 : return NS_ERROR_FAILURE;
71 : }
72 :
73 : nsresult
74 0 : nsSMILNullType::ComputeDistance(const nsSMILValue& aFrom,
75 : const nsSMILValue& aTo,
76 : double& aDistance) const
77 : {
78 0 : NS_NOTREACHED("Computing distance for NULL type");
79 0 : return NS_ERROR_FAILURE;
80 : }
81 :
82 : nsresult
83 0 : nsSMILNullType::Interpolate(const nsSMILValue& aStartVal,
84 : const nsSMILValue& aEndVal,
85 : double aUnitDistance,
86 : nsSMILValue& aResult) const
87 : {
88 0 : NS_NOTREACHED("Interpolating NULL type");
89 0 : return NS_ERROR_FAILURE;
90 4392 : }
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