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 SVG project.
16 : *
17 : * The Initial Developer of the Original Code is Robert Longson.
18 : * Portions created by the Initial Developer are Copyright (C) 2010
19 : * the Initial Developer. All Rights Reserved.
20 : *
21 : * Contributor(s):
22 : *
23 : * Alternatively, the contents of this file may be used under the terms of
24 : * either of the GNU General Public License Version 2 or later (the "GPL"),
25 : * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
26 : * in which case the provisions of the GPL or the LGPL are applicable instead
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30 : * decision by deleting the provisions above and replace them with the notice
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32 : * the provisions above, a recipient may use your version of this file under
33 : * the terms of any one of the MPL, the GPL or the LGPL.
34 : *
35 : * ***** END LICENSE BLOCK ***** */
36 :
37 : #include "SMILStringType.h"
38 : #include "nsSMILValue.h"
39 : #include "nsDebug.h"
40 : #include "nsString.h"
41 :
42 : namespace mozilla {
43 :
44 1464 : /*static*/ SMILStringType SMILStringType::sSingleton;
45 :
46 : void
47 0 : SMILStringType::Init(nsSMILValue& aValue) const
48 : {
49 0 : NS_PRECONDITION(aValue.IsNull(), "Unexpected value type");
50 0 : aValue.mU.mPtr = new nsString();
51 0 : aValue.mType = this;
52 0 : }
53 :
54 : void
55 0 : SMILStringType::Destroy(nsSMILValue& aValue) const
56 : {
57 0 : NS_PRECONDITION(aValue.mType == this, "Unexpected SMIL value");
58 0 : delete static_cast<nsAString*>(aValue.mU.mPtr);
59 0 : aValue.mU.mPtr = nsnull;
60 0 : aValue.mType = &nsSMILNullType::sSingleton;
61 0 : }
62 :
63 : nsresult
64 0 : SMILStringType::Assign(nsSMILValue& aDest, const nsSMILValue& aSrc) const
65 : {
66 0 : NS_PRECONDITION(aDest.mType == aSrc.mType, "Incompatible SMIL types");
67 0 : NS_PRECONDITION(aDest.mType == this, "Unexpected SMIL value");
68 :
69 0 : const nsAString* src = static_cast<const nsAString*>(aSrc.mU.mPtr);
70 0 : nsAString* dst = static_cast<nsAString*>(aDest.mU.mPtr);
71 0 : *dst = *src;
72 0 : return NS_OK;
73 : }
74 :
75 : bool
76 0 : SMILStringType::IsEqual(const nsSMILValue& aLeft,
77 : const nsSMILValue& aRight) const
78 : {
79 0 : NS_PRECONDITION(aLeft.mType == aRight.mType, "Incompatible SMIL types");
80 0 : NS_PRECONDITION(aLeft.mType == this, "Unexpected type for SMIL value");
81 :
82 : const nsAString* leftString =
83 0 : static_cast<const nsAString*>(aLeft.mU.mPtr);
84 : const nsAString* rightString =
85 0 : static_cast<nsAString*>(aRight.mU.mPtr);
86 0 : return *leftString == *rightString;
87 : }
88 :
89 : nsresult
90 0 : SMILStringType::Add(nsSMILValue& aDest, const nsSMILValue& aValueToAdd,
91 : PRUint32 aCount) const
92 : {
93 0 : NS_PRECONDITION(aValueToAdd.mType == aDest.mType,
94 : "Trying to add invalid types");
95 0 : NS_PRECONDITION(aValueToAdd.mType == this, "Unexpected source type");
96 0 : return NS_ERROR_FAILURE; // string values can't be added to each other
97 : }
98 :
99 : nsresult
100 0 : SMILStringType::ComputeDistance(const nsSMILValue& aFrom,
101 : const nsSMILValue& aTo,
102 : double& aDistance) const
103 : {
104 0 : NS_PRECONDITION(aFrom.mType == aTo.mType,"Trying to compare different types");
105 0 : NS_PRECONDITION(aFrom.mType == this, "Unexpected source type");
106 0 : return NS_ERROR_FAILURE; // there is no concept of distance between string values
107 : }
108 :
109 : nsresult
110 0 : SMILStringType::Interpolate(const nsSMILValue& aStartVal,
111 : const nsSMILValue& aEndVal,
112 : double aUnitDistance,
113 : nsSMILValue& aResult) const
114 : {
115 0 : NS_PRECONDITION(aStartVal.mType == aEndVal.mType,
116 : "Trying to interpolate different types");
117 0 : NS_PRECONDITION(aStartVal.mType == this,
118 : "Unexpected types for interpolation");
119 0 : NS_PRECONDITION(aResult.mType == this, "Unexpected result type");
120 0 : return NS_ERROR_FAILURE; // string values do not interpolate
121 : }
122 :
123 4392 : } // namespace mozilla
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