1/*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 *           (C) 1999 Antti Koivisto (koivisto@kde.org)
4 * Copyright (C) 2004, 2005, 2006, 2007, 2010 Apple Inc. All rights reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB.  If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 */
21
22#include "config.h"
23#include "core/html/HTMLMapElement.h"
24
25#include "HTMLNames.h"
26#include "core/dom/Document.h"
27#include "core/dom/ElementTraversal.h"
28#include "core/html/HTMLAreaElement.h"
29#include "core/html/HTMLCollection.h"
30#include "core/html/HTMLImageElement.h"
31#include "core/rendering/HitTestResult.h"
32
33using namespace std;
34
35namespace WebCore {
36
37using namespace HTMLNames;
38
39HTMLMapElement::HTMLMapElement(Document& document)
40    : HTMLElement(mapTag, document)
41{
42    ScriptWrappable::init(this);
43}
44
45PassRefPtr<HTMLMapElement> HTMLMapElement::create(Document& document)
46{
47    return adoptRef(new HTMLMapElement(document));
48}
49
50HTMLMapElement::~HTMLMapElement()
51{
52}
53
54bool HTMLMapElement::mapMouseEvent(LayoutPoint location, const LayoutSize& size, HitTestResult& result)
55{
56    HTMLAreaElement* defaultArea = 0;
57    Element* element = this;
58    while ((element = ElementTraversal::next(*element, this))) {
59        if (isHTMLAreaElement(element)) {
60            HTMLAreaElement* areaElt = toHTMLAreaElement(element);
61            if (areaElt->isDefault()) {
62                if (!defaultArea)
63                    defaultArea = areaElt;
64            } else if (areaElt->mapMouseEvent(location, size, result))
65                return true;
66        }
67    }
68
69    if (defaultArea) {
70        result.setInnerNode(defaultArea);
71        result.setURLElement(defaultArea);
72    }
73    return defaultArea;
74}
75
76HTMLImageElement* HTMLMapElement::imageElement()
77{
78    RefPtr<HTMLCollection> images = document().images();
79    for (unsigned i = 0; Node* curr = images->item(i); i++) {
80        if (!curr->hasTagName(imgTag))
81            continue;
82
83        // The HTMLImageElement's useMap() value includes the '#' symbol at the beginning,
84        // which has to be stripped off.
85        HTMLImageElement* imageElement = toHTMLImageElement(curr);
86        String useMapName = imageElement->getAttribute(usemapAttr).string().substring(1);
87        if (equalIgnoringCase(useMapName, m_name))
88            return imageElement;
89    }
90
91    return 0;
92}
93
94void HTMLMapElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
95{
96    // FIXME: This logic seems wrong for XML documents.
97    // Either the id or name will be used depending on the order the attributes are parsed.
98
99    if (isIdAttributeName(name) || name == nameAttr) {
100        if (isIdAttributeName(name)) {
101            // Call base class so that hasID bit gets set.
102            HTMLElement::parseAttribute(name, value);
103            if (document().isHTMLDocument())
104                return;
105        }
106        if (inDocument())
107            treeScope().removeImageMap(this);
108        String mapName = value;
109        if (mapName[0] == '#')
110            mapName = mapName.substring(1);
111        m_name = document().isHTMLDocument() ? mapName.lower() : mapName;
112        if (inDocument())
113            treeScope().addImageMap(this);
114
115        return;
116    }
117
118    HTMLElement::parseAttribute(name, value);
119}
120
121PassRefPtr<HTMLCollection> HTMLMapElement::areas()
122{
123    return ensureCachedHTMLCollection(MapAreas);
124}
125
126Node::InsertionNotificationRequest HTMLMapElement::insertedInto(ContainerNode* insertionPoint)
127{
128    if (insertionPoint->inDocument())
129        treeScope().addImageMap(this);
130    return HTMLElement::insertedInto(insertionPoint);
131}
132
133void HTMLMapElement::removedFrom(ContainerNode* insertionPoint)
134{
135    if (insertionPoint->inDocument())
136        treeScope().removeImageMap(this);
137    HTMLElement::removedFrom(insertionPoint);
138}
139
140}
141