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 "core/html/HTMLSummaryElement.h"
23
24#include "bindings/core/v8/ExceptionStatePlaceholder.h"
25#include "core/HTMLNames.h"
26#include "core/events/KeyboardEvent.h"
27#include "core/dom/NodeRenderingTraversal.h"
28#include "core/dom/shadow/ShadowRoot.h"
29#include "core/html/HTMLContentElement.h"
30#include "core/html/HTMLDetailsElement.h"
31#include "core/html/shadow/DetailsMarkerControl.h"
32#include "core/rendering/RenderBlockFlow.h"
33
34namespace blink {
35
36using namespace HTMLNames;
37
38PassRefPtrWillBeRawPtr<HTMLSummaryElement> HTMLSummaryElement::create(Document& document)
39{
40    RefPtrWillBeRawPtr<HTMLSummaryElement> summary = adoptRefWillBeNoop(new HTMLSummaryElement(document));
41    summary->ensureUserAgentShadowRoot();
42    return summary.release();
43}
44
45HTMLSummaryElement::HTMLSummaryElement(Document& document)
46    : HTMLElement(summaryTag, document)
47{
48}
49
50RenderObject* HTMLSummaryElement::createRenderer(RenderStyle*)
51{
52    return new RenderBlockFlow(this);
53}
54
55void HTMLSummaryElement::didAddUserAgentShadowRoot(ShadowRoot& root)
56{
57    root.appendChild(DetailsMarkerControl::create(document()));
58    root.appendChild(HTMLContentElement::create(document()));
59}
60
61HTMLDetailsElement* HTMLSummaryElement::detailsElement() const
62{
63    Node* parent = NodeRenderingTraversal::parent(this);
64    if (isHTMLDetailsElement(parent))
65        return toHTMLDetailsElement(parent);
66    return 0;
67}
68
69bool HTMLSummaryElement::isMainSummary() const
70{
71    if (HTMLDetailsElement* details = detailsElement())
72        return details->findMainSummary() == this;
73
74    return false;
75}
76
77static bool isClickableControl(Node* node)
78{
79    if (!node->isElementNode())
80        return false;
81    Element* element = toElement(node);
82    if (element->isFormControlElement())
83        return true;
84    Element* host = element->shadowHost();
85    return host && host->isFormControlElement();
86}
87
88bool HTMLSummaryElement::supportsFocus() const
89{
90    return isMainSummary();
91}
92
93void HTMLSummaryElement::defaultEventHandler(Event* event)
94{
95    if (isMainSummary() && renderer()) {
96        if (event->type() == EventTypeNames::DOMActivate && !isClickableControl(event->target()->toNode())) {
97            if (HTMLDetailsElement* details = detailsElement())
98                details->toggleOpen();
99            event->setDefaultHandled();
100            return;
101        }
102
103        if (event->isKeyboardEvent()) {
104            if (event->type() == EventTypeNames::keydown && toKeyboardEvent(event)->keyIdentifier() == "U+0020") {
105                setActive(true);
106                // No setDefaultHandled() - IE dispatches a keypress in this case.
107                return;
108            }
109            if (event->type() == EventTypeNames::keypress) {
110                switch (toKeyboardEvent(event)->charCode()) {
111                case '\r':
112                    dispatchSimulatedClick(event);
113                    event->setDefaultHandled();
114                    return;
115                case ' ':
116                    // Prevent scrolling down the page.
117                    event->setDefaultHandled();
118                    return;
119                }
120            }
121            if (event->type() == EventTypeNames::keyup && toKeyboardEvent(event)->keyIdentifier() == "U+0020") {
122                if (active())
123                    dispatchSimulatedClick(event);
124                event->setDefaultHandled();
125                return;
126            }
127        }
128    }
129
130    HTMLElement::defaultEventHandler(event);
131}
132
133bool HTMLSummaryElement::willRespondToMouseClickEvents()
134{
135    if (isMainSummary() && renderer())
136        return true;
137
138    return HTMLElement::willRespondToMouseClickEvents();
139}
140
141}
142