1 /*
2 * Copyright (C) Research In Motion Limited 2010. All rights reserved.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB. If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19
20 #include "config.h"
21
22 #if ENABLE(SVG)
23 #include "SVGPathSegListPropertyTearOff.h"
24
25 #include "SVGAnimatedPathSegListPropertyTearOff.h"
26 #include "SVGNames.h"
27 #include "SVGPathElement.h"
28 #include "SVGPathSegWithContext.h"
29
30 namespace WebCore {
31
clear(ExceptionCode & ec)32 void SVGPathSegListPropertyTearOff::clear(ExceptionCode& ec)
33 {
34 SVGPathSegList& values = m_animatedProperty->values();
35 if (values.isEmpty())
36 return;
37
38 unsigned size = values.size();
39 for (unsigned i = 0; i < size; ++i) {
40 ListItemType item = values.at(i);
41 static_cast<SVGPathSegWithContext*>(item.get())->setContextAndRole(0, PathSegUndefinedRole);
42 }
43
44 SVGPathSegListPropertyTearOff::Base::clearValues(values, ec);
45 }
46
getItem(unsigned index,ExceptionCode & ec)47 SVGPathSegListPropertyTearOff::PassListItemType SVGPathSegListPropertyTearOff::getItem(unsigned index, ExceptionCode& ec)
48 {
49 SVGPathSegList& values = m_animatedProperty->values();
50 ListItemType returnedItem = Base::getItemValues(values, index, ec);
51 if (returnedItem) {
52 ASSERT(static_cast<SVGPathSegWithContext*>(returnedItem.get())->contextElement() == contextElement());
53 ASSERT(static_cast<SVGPathSegWithContext*>(returnedItem.get())->role() == m_pathSegRole);
54 }
55 return returnedItem.release();
56 }
57
removeItem(unsigned index,ExceptionCode & ec)58 SVGPathSegListPropertyTearOff::PassListItemType SVGPathSegListPropertyTearOff::removeItem(unsigned index, ExceptionCode& ec)
59 {
60 SVGPathSegList& values = m_animatedProperty->values();
61 SVGPathSegListPropertyTearOff::ListItemType removedItem = SVGPathSegListPropertyTearOff::Base::removeItemValues(values, index, ec);
62 if (removedItem)
63 static_cast<SVGPathSegWithContext*>(removedItem.get())->setContextAndRole(0, PathSegUndefinedRole);
64 return removedItem.release();
65 }
66
contextElement() const67 SVGPathElement* SVGPathSegListPropertyTearOff::contextElement() const
68 {
69 SVGElement* contextElement = m_animatedProperty->contextElement();
70 ASSERT(contextElement);
71 ASSERT(contextElement->hasTagName(SVGNames::pathTag));
72 return static_cast<SVGPathElement*>(contextElement);
73 }
74
processIncomingListItemValue(const ListItemType & newItem,unsigned * indexToModify)75 void SVGPathSegListPropertyTearOff::processIncomingListItemValue(const ListItemType& newItem, unsigned* indexToModify)
76 {
77 SVGPathSegWithContext* newItemWithContext = static_cast<SVGPathSegWithContext*>(newItem.get());
78 SVGAnimatedProperty* animatedPropertyOfItem = newItemWithContext->animatedProperty();
79
80 // Alter the role, after calling animatedProperty(), as that may influence the returned animated property.
81 newItemWithContext->setContextAndRole(contextElement(), m_pathSegRole);
82
83 if (!animatedPropertyOfItem)
84 return;
85
86 // newItem belongs to a SVGPathElement, but its associated SVGAnimatedProperty is not an animated list tear off.
87 // (for example: "pathElement.pathSegList.appendItem(pathElement.createSVGPathSegClosepath())")
88 if (!animatedPropertyOfItem->isAnimatedListTearOff())
89 return;
90
91 // Spec: If newItem is already in a list, it is removed from its previous list before it is inserted into this list.
92 // 'newItem' is already living in another list. If it's not our list, synchronize the other lists wrappers after the removal.
93 bool livesInOtherList = animatedPropertyOfItem != m_animatedProperty;
94 int removedIndex = static_cast<SVGAnimatedPathSegListPropertyTearOff*>(animatedPropertyOfItem)->removeItemFromList(newItem.get(), livesInOtherList);
95 ASSERT(removedIndex != -1);
96
97 if (!indexToModify)
98 return;
99
100 // If the item lived in our list, adjust the insertion index.
101 if (!livesInOtherList) {
102 unsigned& index = *indexToModify;
103 // Spec: If the item is already in this list, note that the index of the item to (replace|insert before) is before the removal of the item.
104 if (static_cast<unsigned>(removedIndex) < index)
105 --index;
106 }
107 }
108
109 }
110
111 #endif // ENABLE(SVG)
112