1/*
2 * Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies)
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
21#include "config.h"
22#include "HTMLSummaryElement.h"
23
24#include "DetailsMarkerControl.h"
25#include "EventNames.h"
26#include "HTMLDetailsElement.h"
27#include "HTMLFormControlElement.h"
28#include "HTMLSlotElement.h"
29#include "KeyboardEvent.h"
30#include "MouseEvent.h"
31#include "PlatformMouseEvent.h"
32#include "RenderBlockFlow.h"
33#include "ShadowRoot.h"
34#include "SlotAssignment.h"
35#include <wtf/IsoMallocInlines.h>
36
37namespace WebCore {
38
39WTF_MAKE_ISO_ALLOCATED_IMPL(HTMLSummaryElement);
40
41using namespace HTMLNames;
42
43class SummarySlotElement final : public SlotAssignment {
44private:
45 void hostChildElementDidChange(const Element&, ShadowRoot& shadowRoot) override
46 {
47 didChangeSlot(SlotAssignment::defaultSlotName(), shadowRoot);
48 }
49
50 const AtomicString& slotNameForHostChild(const Node&) const override { return SlotAssignment::defaultSlotName(); }
51};
52
53Ref<HTMLSummaryElement> HTMLSummaryElement::create(const QualifiedName& tagName, Document& document)
54{
55 Ref<HTMLSummaryElement> summary = adoptRef(*new HTMLSummaryElement(tagName, document));
56 summary->addShadowRoot(ShadowRoot::create(document, std::make_unique<SummarySlotElement>()));
57 return summary;
58}
59
60HTMLSummaryElement::HTMLSummaryElement(const QualifiedName& tagName, Document& document)
61 : HTMLElement(tagName, document)
62{
63 ASSERT(hasTagName(summaryTag));
64}
65
66RenderPtr<RenderElement> HTMLSummaryElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&)
67{
68 return createRenderer<RenderBlockFlow>(*this, WTFMove(style));
69}
70
71void HTMLSummaryElement::didAddUserAgentShadowRoot(ShadowRoot& root)
72{
73 root.appendChild(DetailsMarkerControl::create(document()));
74 root.appendChild(HTMLSlotElement::create(slotTag, document()));
75}
76
77RefPtr<HTMLDetailsElement> HTMLSummaryElement::detailsElement() const
78{
79 auto* parent = parentElement();
80 if (parent && is<HTMLDetailsElement>(*parent))
81 return downcast<HTMLDetailsElement>(parent);
82 // Fallback summary element is in the shadow tree.
83 auto* host = shadowHost();
84 if (host && is<HTMLDetailsElement>(*host))
85 return downcast<HTMLDetailsElement>(host);
86 return nullptr;
87}
88
89bool HTMLSummaryElement::isActiveSummary() const
90{
91 RefPtr<HTMLDetailsElement> details = detailsElement();
92 if (!details)
93 return false;
94 return details->isActiveSummary(*this);
95}
96
97static bool isClickableControl(EventTarget* target)
98{
99 if (!is<Element>(target))
100 return false;
101 auto& element = downcast<Element>(*target);
102 return is<HTMLFormControlElement>(element) || is<HTMLFormControlElement>(element.shadowHost());
103}
104
105bool HTMLSummaryElement::supportsFocus() const
106{
107 return isActiveSummary();
108}
109
110void HTMLSummaryElement::defaultEventHandler(Event& event)
111{
112 if (isActiveSummary() && renderer()) {
113 if (event.type() == eventNames().DOMActivateEvent && !isClickableControl(event.target())) {
114 if (RefPtr<HTMLDetailsElement> details = detailsElement())
115 details->toggleOpen();
116 event.setDefaultHandled();
117 return;
118 }
119
120 if (is<KeyboardEvent>(event)) {
121 KeyboardEvent& keyboardEvent = downcast<KeyboardEvent>(event);
122 if (keyboardEvent.type() == eventNames().keydownEvent && keyboardEvent.keyIdentifier() == "U+0020") {
123 setActive(true, true);
124 // No setDefaultHandled() - IE dispatches a keypress in this case.
125 return;
126 }
127 if (keyboardEvent.type() == eventNames().keypressEvent) {
128 switch (keyboardEvent.charCode()) {
129 case '\r':
130 dispatchSimulatedClick(&event);
131 keyboardEvent.setDefaultHandled();
132 return;
133 case ' ':
134 // Prevent scrolling down the page.
135 keyboardEvent.setDefaultHandled();
136 return;
137 }
138 }
139 if (keyboardEvent.type() == eventNames().keyupEvent && keyboardEvent.keyIdentifier() == "U+0020") {
140 if (active())
141 dispatchSimulatedClick(&event);
142 keyboardEvent.setDefaultHandled();
143 return;
144 }
145 }
146 }
147
148 HTMLElement::defaultEventHandler(event);
149}
150
151bool HTMLSummaryElement::willRespondToMouseClickEvents()
152{
153 if (isActiveSummary() && renderer())
154 return true;
155
156 return HTMLElement::willRespondToMouseClickEvents();
157}
158
159}
160