1 /**
2 * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
3 *
4 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
5 * (C) 1999 Antti Koivisto (koivisto@kde.org)
6 * (C) 2000 Simon Hausmann <hausmann@kde.org>
7 * Copyright (C) 2003, 2006, 2007, 2008 Apple Inc. All rights reserved.
8 * (C) 2006 Graham Dennis (graham.dennis@gmail.com)
9 *
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Library General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
14 *
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Library General Public License for more details.
19 *
20 * You should have received a copy of the GNU Library General Public License
21 * along with this library; see the file COPYING.LIB. If not, write to
22 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
23 * Boston, MA 02110-1301, USA.
24 *
25 */
26
27 #include "config.h"
28
29 #if ENABLE(WML)
30 #include "WMLAElement.h"
31
32 #include "DNS.h"
33 #include "Event.h"
34 #include "EventHandler.h"
35 #include "EventNames.h"
36 #include "Frame.h"
37 #include "FrameLoader.h"
38 #include "HTMLNames.h"
39 #include "KeyboardEvent.h"
40 #include "MappedAttribute.h"
41 #include "MouseEvent.h"
42 #include "RenderBox.h"
43 #include "WMLNames.h"
44
45 namespace WebCore {
46
47 using namespace WMLNames;
48
WMLAElement(const QualifiedName & tagName,Document * doc)49 WMLAElement::WMLAElement(const QualifiedName& tagName, Document* doc)
50 : WMLElement(tagName, doc)
51 {
52 }
53
parseMappedAttribute(MappedAttribute * attr)54 void WMLAElement::parseMappedAttribute(MappedAttribute* attr)
55 {
56 if (attr->name() == HTMLNames::hrefAttr) {
57 bool wasLink = isLink();
58 setIsLink(!attr->isNull());
59 if (wasLink != isLink())
60 setNeedsStyleRecalc();
61 if (isLink() && document()->isDNSPrefetchEnabled()) {
62 String value = attr->value();
63 if (protocolIs(value, "http") || protocolIs(value, "https") || value.startsWith("//"))
64 prefetchDNS(document()->completeURL(value).host());
65 }
66 } else if (attr->name() == HTMLNames::nameAttr
67 || attr->name() == HTMLNames::titleAttr
68 || attr->name() == HTMLNames::relAttr) {
69 // Do nothing.
70 } else
71 WMLElement::parseMappedAttribute(attr);
72 }
73
supportsFocus() const74 bool WMLAElement::supportsFocus() const
75 {
76 return isFocusable() || (isLink() && document() && !document()->haveStylesheetsLoaded());
77 }
78
isFocusable() const79 bool WMLAElement::isFocusable() const
80 {
81 // FIXME: Even if we are not visible, we might have a child that is visible.
82 // Dave wants to fix that some day with a "has visible content" flag or the like.
83 if (!(isLink() && renderer() && renderer()->style()->visibility() == VISIBLE))
84 return false;
85
86 return true;
87 }
88
isMouseFocusable() const89 bool WMLAElement::isMouseFocusable() const
90 {
91 return false;
92 }
93
isKeyboardFocusable(KeyboardEvent * event) const94 bool WMLAElement::isKeyboardFocusable(KeyboardEvent* event) const
95 {
96 if (!isFocusable())
97 return false;
98
99 if (!document()->frame())
100 return false;
101
102 if (!document()->frame()->eventHandler()->tabsToLinks(event))
103 return false;
104
105 if (!renderer() || !renderer()->isBoxModelObject())
106 return false;
107
108 // Before calling absoluteRects, check for the common case where the renderer
109 // is non-empty, since this is a faster check and almost always returns true.
110 RenderBoxModelObject* box = toRenderBoxModelObject(renderer());
111 if (!box->borderBoundingBox().isEmpty())
112 return true;
113
114 Vector<IntRect> rects;
115 FloatPoint absPos = renderer()->localToAbsolute();
116 renderer()->absoluteRects(rects, absPos.x(), absPos.y());
117 size_t n = rects.size();
118 for (size_t i = 0; i < n; ++i)
119 if (!rects[i].isEmpty())
120 return true;
121
122 return false;
123 }
124
defaultEventHandler(Event * event)125 void WMLAElement::defaultEventHandler(Event* event)
126 {
127 if (isLink() && (event->type() == eventNames().clickEvent || (event->type() == eventNames().keydownEvent && focused()))) {
128 MouseEvent* e = 0;
129 if (event->type() == eventNames().clickEvent && event->isMouseEvent())
130 e = static_cast<MouseEvent*>(event);
131
132 KeyboardEvent* k = 0;
133 if (event->type() == eventNames().keydownEvent && event->isKeyboardEvent())
134 k = static_cast<KeyboardEvent*>(event);
135
136 if (e && e->button() == RightButton) {
137 WMLElement::defaultEventHandler(event);
138 return;
139 }
140
141 if (k) {
142 if (k->keyIdentifier() != "Enter") {
143 WMLElement::defaultEventHandler(event);
144 return;
145 }
146
147 event->setDefaultHandled();
148 dispatchSimulatedClick(event);
149 return;
150 }
151
152 if (!event->defaultPrevented() && document()->frame()) {
153 KURL url = document()->completeURL(deprecatedParseURL(getAttribute(HTMLNames::hrefAttr)));
154 document()->frame()->loader()->urlSelected(url, target(), event, false, false, true);
155 }
156
157 event->setDefaultHandled();
158 }
159
160 WMLElement::defaultEventHandler(event);
161 }
162
accessKeyAction(bool sendToAnyElement)163 void WMLAElement::accessKeyAction(bool sendToAnyElement)
164 {
165 // send the mouse button events if the caller specified sendToAnyElement
166 dispatchSimulatedClick(0, sendToAnyElement);
167 }
168
isURLAttribute(Attribute * attr) const169 bool WMLAElement::isURLAttribute(Attribute *attr) const
170 {
171 return attr->name() == HTMLNames::hrefAttr;
172 }
173
target() const174 String WMLAElement::target() const
175 {
176 return getAttribute(HTMLNames::targetAttr);
177 }
178
179 }
180
181 #endif
182