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 Mozilla SVG Project code.
16 : *
17 : * The Initial Developer of the Original Code is the Mozilla Foundation.
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 the GNU General Public License Version 2 or later (the "GPL"), or
25 : * 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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34 : *
35 : * ***** END LICENSE BLOCK ***** */
36 :
37 : #include "DOMSVGNumber.h"
38 : #include "DOMSVGNumberList.h"
39 : #include "DOMSVGAnimatedNumberList.h"
40 : #include "SVGAnimatedNumberList.h"
41 : #include "nsSVGElement.h"
42 : #include "nsIDOMSVGNumber.h"
43 : #include "nsDOMError.h"
44 : #include "nsContentUtils.h"
45 :
46 : // See the architecture comment in DOMSVGAnimatedNumberList.h.
47 :
48 : using namespace mozilla;
49 :
50 : // We could use NS_IMPL_CYCLE_COLLECTION_1, except that in Unlink() we need to
51 : // clear our list's weak ref to us to be safe. (The other option would be to
52 : // not unlink and rely on the breaking of the other edges in the cycle, as
53 : // NS_SVG_VAL_IMPL_CYCLE_COLLECTION does.)
54 1464 : NS_IMPL_CYCLE_COLLECTION_CLASS(DOMSVGNumber)
55 0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(DOMSVGNumber)
56 : // We may not belong to a list, so we must null check tmp->mList.
57 0 : if (tmp->mList) {
58 0 : tmp->mList->mItems[tmp->mListIndex] = nsnull;
59 : }
60 0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mList)
61 0 : NS_IMPL_CYCLE_COLLECTION_UNLINK_END
62 0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(DOMSVGNumber)
63 0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR(mList)
64 0 : NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
65 :
66 0 : NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMSVGNumber)
67 0 : NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMSVGNumber)
68 :
69 : DOMCI_DATA(SVGNumber, DOMSVGNumber)
70 :
71 0 : NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMSVGNumber)
72 0 : NS_INTERFACE_MAP_ENTRY(DOMSVGNumber) // pseudo-interface
73 0 : NS_INTERFACE_MAP_ENTRY(nsIDOMSVGNumber)
74 0 : NS_INTERFACE_MAP_ENTRY(nsISupports)
75 0 : NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(SVGNumber)
76 0 : NS_INTERFACE_MAP_END
77 :
78 0 : DOMSVGNumber::DOMSVGNumber(DOMSVGNumberList *aList,
79 : PRUint8 aAttrEnum,
80 : PRUint32 aListIndex,
81 : PRUint8 aIsAnimValItem)
82 : : mList(aList)
83 : , mListIndex(aListIndex)
84 : , mAttrEnum(aAttrEnum)
85 : , mIsAnimValItem(aIsAnimValItem)
86 0 : , mValue(0.0f)
87 : {
88 : // These shifts are in sync with the members in the header.
89 0 : NS_ABORT_IF_FALSE(aList &&
90 : aAttrEnum < (1 << 4) &&
91 : aListIndex <= MaxListIndex() &&
92 : aIsAnimValItem < (1 << 1), "bad arg");
93 :
94 0 : NS_ABORT_IF_FALSE(IndexIsValid(), "Bad index for DOMSVGNumber!");
95 0 : }
96 :
97 0 : DOMSVGNumber::DOMSVGNumber()
98 : : mList(nsnull)
99 : , mListIndex(0)
100 : , mAttrEnum(0)
101 : , mIsAnimValItem(false)
102 0 : , mValue(0.0f)
103 : {
104 0 : }
105 :
106 : NS_IMETHODIMP
107 0 : DOMSVGNumber::GetValue(float* aValue)
108 : {
109 0 : if (mIsAnimValItem && HasOwner()) {
110 0 : Element()->FlushAnimations(); // May make HasOwner() == false
111 : }
112 0 : *aValue = HasOwner() ? InternalItem() : mValue;
113 0 : return NS_OK;
114 : }
115 :
116 : NS_IMETHODIMP
117 0 : DOMSVGNumber::SetValue(float aValue)
118 : {
119 0 : if (mIsAnimValItem) {
120 0 : return NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR;
121 : }
122 :
123 0 : NS_ENSURE_FINITE(aValue, NS_ERROR_ILLEGAL_VALUE);
124 :
125 0 : if (HasOwner()) {
126 0 : if (InternalItem() == aValue) {
127 0 : return NS_OK;
128 : }
129 0 : nsAttrValue emptyOrOldValue = Element()->WillChangeNumberList(mAttrEnum);
130 0 : InternalItem() = aValue;
131 0 : Element()->DidChangeNumberList(mAttrEnum, emptyOrOldValue);
132 0 : if (mList->mAList->IsAnimating()) {
133 0 : Element()->AnimationNeedsResample();
134 : }
135 0 : return NS_OK;
136 : }
137 0 : mValue = aValue;
138 0 : return NS_OK;
139 : }
140 :
141 : void
142 0 : DOMSVGNumber::InsertingIntoList(DOMSVGNumberList *aList,
143 : PRUint8 aAttrEnum,
144 : PRUint32 aListIndex,
145 : PRUint8 aIsAnimValItem)
146 : {
147 0 : NS_ASSERTION(!HasOwner(), "Inserting item that is already in a list");
148 :
149 0 : mList = aList;
150 0 : mAttrEnum = aAttrEnum;
151 0 : mListIndex = aListIndex;
152 0 : mIsAnimValItem = aIsAnimValItem;
153 :
154 0 : NS_ABORT_IF_FALSE(IndexIsValid(), "Bad index for DOMSVGNumber!");
155 0 : }
156 :
157 : void
158 0 : DOMSVGNumber::RemovingFromList()
159 : {
160 0 : mValue = InternalItem();
161 0 : mList = nsnull;
162 0 : mIsAnimValItem = false;
163 0 : }
164 :
165 : float
166 0 : DOMSVGNumber::ToSVGNumber()
167 : {
168 0 : return HasOwner() ? InternalItem() : mValue;
169 : }
170 :
171 : float&
172 0 : DOMSVGNumber::InternalItem()
173 : {
174 0 : SVGAnimatedNumberList *alist = Element()->GetAnimatedNumberList(mAttrEnum);
175 0 : return mIsAnimValItem && alist->mAnimVal ?
176 0 : (*alist->mAnimVal)[mListIndex] :
177 0 : alist->mBaseVal[mListIndex];
178 : }
179 :
180 : #ifdef DEBUG
181 : bool
182 0 : DOMSVGNumber::IndexIsValid()
183 : {
184 0 : SVGAnimatedNumberList *alist = Element()->GetAnimatedNumberList(mAttrEnum);
185 : return (mIsAnimValItem &&
186 0 : mListIndex < alist->GetAnimValue().Length()) ||
187 0 : (!mIsAnimValItem &&
188 0 : mListIndex < alist->GetBaseValue().Length());
189 4392 : }
190 : #endif
191 :
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