Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| 3 | * (C) 1999 Antti Koivisto (koivisto@kde.org) |
| 4 | * (C) 2001 Dirk Mueller (mueller@kde.org) |
| 5 | * Copyright (C) 2004, 2005, 2006, 2007, 2010 Apple Inc. All rights reserved. |
| 6 | * (C) 2006 Alexey Proskuryakov (ap@nypop.com) |
| 7 | * |
| 8 | * This library is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Library General Public |
| 10 | * License as published by the Free Software Foundation; either |
| 11 | * version 2 of the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This library is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * Library General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Library General Public License |
| 19 | * along with this library; see the file COPYING.LIB. If not, write to |
| 20 | * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 21 | * Boston, MA 02110-1301, USA. |
| 22 | * |
| 23 | */ |
| 24 | |
| 25 | #include "config.h" |
| 26 | #include "core/html/HTMLLabelElement.h" |
| 27 | |
| 28 | #include "HTMLNames.h" |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 29 | #include "core/dom/Event.h" |
| 30 | #include "core/dom/EventNames.h" |
| 31 | #include "core/dom/NodeTraversal.h" |
| 32 | #include "core/html/FormAssociatedElement.h" |
| 33 | |
| 34 | namespace WebCore { |
| 35 | |
| 36 | using namespace HTMLNames; |
| 37 | |
| 38 | static LabelableElement* nodeAsLabelableElement(Node* node) |
| 39 | { |
| 40 | if (!node || !node->isHTMLElement()) |
| 41 | return 0; |
| 42 | |
| 43 | HTMLElement* element = static_cast<HTMLElement*>(node); |
| 44 | if (!element->isLabelable()) |
| 45 | return 0; |
| 46 | |
| 47 | LabelableElement* labelableElement = static_cast<LabelableElement*>(element); |
| 48 | if (!labelableElement->supportLabels()) |
| 49 | return 0; |
| 50 | |
| 51 | return labelableElement; |
| 52 | } |
| 53 | |
| 54 | inline HTMLLabelElement::HTMLLabelElement(const QualifiedName& tagName, Document* document) |
| 55 | : HTMLElement(tagName, document) |
| 56 | { |
| 57 | ASSERT(hasTagName(labelTag)); |
| 58 | ScriptWrappable::init(this); |
| 59 | } |
| 60 | |
| 61 | PassRefPtr<HTMLLabelElement> HTMLLabelElement::create(const QualifiedName& tagName, Document* document) |
| 62 | { |
| 63 | return adoptRef(new HTMLLabelElement(tagName, document)); |
| 64 | } |
| 65 | |
Torne (Richard Coles) | 521d96e | 2013-06-19 11:58:24 +0100 | [diff] [blame] | 66 | bool HTMLLabelElement::rendererIsFocusable() const |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 67 | { |
Torne (Richard Coles) | 81a5157 | 2013-05-13 16:52:28 +0100 | [diff] [blame] | 68 | HTMLLabelElement* that = const_cast<HTMLLabelElement*>(this); |
| 69 | return that->isContentEditable(); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 70 | } |
| 71 | |
| 72 | LabelableElement* HTMLLabelElement::control() |
| 73 | { |
| 74 | const AtomicString& controlId = getAttribute(forAttr); |
| 75 | if (controlId.isNull()) { |
| 76 | // Search the children and descendants of the label element for a form element. |
| 77 | // per http://dev.w3.org/html5/spec/Overview.html#the-label-element |
| 78 | // the form element must be "labelable form-associated element". |
| 79 | Element* element = this; |
| 80 | while ((element = ElementTraversal::next(element, this))) { |
| 81 | if (LabelableElement* labelableElement = nodeAsLabelableElement(element)) |
| 82 | return labelableElement; |
| 83 | } |
| 84 | return 0; |
| 85 | } |
| 86 | |
| 87 | // Find the first element whose id is controlId. If it is found and it is a labelable form control, |
| 88 | // return it, otherwise return 0. |
| 89 | return nodeAsLabelableElement(treeScope()->getElementById(controlId)); |
| 90 | } |
| 91 | |
| 92 | HTMLFormElement* HTMLLabelElement::form() const |
| 93 | { |
| 94 | return FormAssociatedElement::findAssociatedForm(this, 0); |
| 95 | } |
| 96 | |
| 97 | void HTMLLabelElement::setActive(bool down, bool pause) |
| 98 | { |
| 99 | if (down == active()) |
| 100 | return; |
| 101 | |
| 102 | // Update our status first. |
| 103 | HTMLElement::setActive(down, pause); |
| 104 | |
| 105 | // Also update our corresponding control. |
| 106 | if (HTMLElement* element = control()) |
| 107 | element->setActive(down, pause); |
| 108 | } |
| 109 | |
| 110 | void HTMLLabelElement::setHovered(bool over) |
| 111 | { |
| 112 | if (over == hovered()) |
| 113 | return; |
| 114 | |
| 115 | // Update our status first. |
| 116 | HTMLElement::setHovered(over); |
| 117 | |
| 118 | // Also update our corresponding control. |
| 119 | if (HTMLElement* element = control()) |
| 120 | element->setHovered(over); |
| 121 | } |
| 122 | |
| 123 | void HTMLLabelElement::defaultEventHandler(Event* evt) |
| 124 | { |
| 125 | static bool processingClick = false; |
| 126 | |
| 127 | if (evt->type() == eventNames().clickEvent && !processingClick) { |
| 128 | RefPtr<HTMLElement> element = control(); |
| 129 | |
| 130 | // If we can't find a control or if the control received the click |
| 131 | // event, then there's no need for us to do anything. |
| 132 | if (!element || (evt->target() && element->containsIncludingShadowDOM(evt->target()->toNode()))) |
| 133 | return; |
| 134 | |
| 135 | processingClick = true; |
| 136 | |
| 137 | // Click the corresponding control. |
| 138 | element->dispatchSimulatedClick(evt); |
| 139 | |
| 140 | if (element->isMouseFocusable()) |
| 141 | element->focus(); |
| 142 | |
| 143 | processingClick = false; |
| 144 | |
| 145 | evt->setDefaultHandled(); |
| 146 | } |
| 147 | |
| 148 | HTMLElement::defaultEventHandler(evt); |
| 149 | } |
| 150 | |
| 151 | bool HTMLLabelElement::willRespondToMouseClickEvents() |
| 152 | { |
| 153 | if (control() && control()->willRespondToMouseClickEvents()) |
| 154 | return true; |
| 155 | |
| 156 | return HTMLElement::willRespondToMouseClickEvents(); |
| 157 | } |
| 158 | |
| 159 | void HTMLLabelElement::focus(bool, FocusDirection direction) |
| 160 | { |
| 161 | // to match other browsers, always restore previous selection |
| 162 | if (HTMLElement* element = control()) |
| 163 | element->focus(true, direction); |
Torne (Richard Coles) | 5267f70 | 2013-06-11 10:57:24 +0100 | [diff] [blame] | 164 | if (isFocusable()) |
| 165 | HTMLElement::focus(true, direction); |
Torne (Richard Coles) | 53e740f | 2013-05-09 18:38:43 +0100 | [diff] [blame] | 166 | } |
| 167 | |
| 168 | void HTMLLabelElement::accessKeyAction(bool sendMouseEvents) |
| 169 | { |
| 170 | if (HTMLElement* element = control()) |
| 171 | element->accessKeyAction(sendMouseEvents); |
| 172 | else |
| 173 | HTMLElement::accessKeyAction(sendMouseEvents); |
| 174 | } |
| 175 | |
| 176 | } // namespace |