WebCore/html/HTMLButtonElement.cpp

   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 Apple Inc. All rights reserved.
   6  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
   7  * Copyright (C) 2007 Samuel Weinig (sam@webkit.org)
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Library General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Library General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Library General Public License
  20  * along with this library; see the file COPYING.LIB.  If not, write to
  21  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  22  * Boston, MA 02110-1301, USA.
  23  *
  24  */
  25
  26 #include "config.h"
  27 #include "HTMLButtonElement.h"
  28
  29 #include "EventNames.h"
  30 #include "FormDataList.h"
  31 #include "HTMLFormElement.h"
  32 #include "HTMLNames.h"
  33 #include "ScriptEventListener.h"
  34 #include "KeyboardEvent.h"
  35 #include "MappedAttribute.h"
  36 #include "RenderButton.h"
  37 #include <wtf/StdLibExtras.h>
  38
  39 namespace WebCore {
  40
  41 using namespace HTMLNames;
  42
  43 HTMLButtonElement::HTMLButtonElement(const QualifiedName& tagName, Document* doc, HTMLFormElement* form)
  44     : HTMLFormControlElement(tagName, doc, form)
  45     , m_type(SUBMIT)
  46     , m_activeSubmit(false)
  47 {
  48     ASSERT(hasTagName(buttonTag));
  49 }
  50
  51 HTMLButtonElement::~HTMLButtonElement()
  52 {
  53 }
  54
  55 RenderObject* HTMLButtonElement::createRenderer(RenderArena* arena, RenderStyle*)
  56 {
  57     return new (arena) RenderButton(this);
  58 }
  59
  60 const AtomicString& HTMLButtonElement::formControlType() const
  61 {
  62     switch (m_type) {
  63         case SUBMIT: {
  64             DEFINE_STATIC_LOCAL(const AtomicString, submit, ("submit"));
  65             return submit;
  66         }
  67         case BUTTON: {
  68             DEFINE_STATIC_LOCAL(const AtomicString, button, ("button"));
  69             return button;
  70         }
  71         case RESET: {
  72             DEFINE_STATIC_LOCAL(const AtomicString, reset, ("reset"));
  73             return reset;
  74         }
  75     }
  76
  77     ASSERT_NOT_REACHED();
  78     return emptyAtom;
  79 }
  80
  81 void HTMLButtonElement::parseMappedAttribute(MappedAttribute* attr)
  82 {
  83     if (attr->name() == typeAttr) {
  84         if (equalIgnoringCase(attr->value(), "reset"))
  85             m_type = RESET;
  86         else if (equalIgnoringCase(attr->value(), "button"))
  87             m_type = BUTTON;
  88         else
  89             m_type = SUBMIT;
  90     } else if (attr->name() == alignAttr) {
  91         // Don't map 'align' attribute.  This matches what Firefox and IE do, but not Opera.
  92         // See http://bugs.webkit.org/show_bug.cgi?id=12071
  93     } else if (attr->name() == onfocusAttr) {
  94         setAttributeEventListener(eventNames().focusEvent, createAttributeEventListener(this, attr));
  95     } else if (attr->name() == onblurAttr) {
  96         setAttributeEventListener(eventNames().blurEvent, createAttributeEventListener(this, attr));
  97     } else
  98         HTMLFormControlElement::parseMappedAttribute(attr);
  99 }
 100
 101 void HTMLButtonElement::defaultEventHandler(Event* evt)
 102 {
 103     if (evt->type() == eventNames().DOMActivateEvent && !disabled()) {
 104         if (form() && m_type == SUBMIT) {
 105             m_activeSubmit = true;
 106             form()->prepareSubmit(evt);
 107             m_activeSubmit = false; // in case we were canceled
 108         }
 109         if (form() && m_type == RESET)
 110             form()->reset();
 111     }
 112
 113     if (evt->isKeyboardEvent()) {
 114         if (evt->type() == eventNames().keydownEvent && static_cast<KeyboardEvent*>(evt)->keyIdentifier() == "U+0020") {
 115             setActive(true, true);
 116             // No setDefaultHandled() - IE dispatches a keypress in this case.
 117             return;
 118         }
 119         if (evt->type() == eventNames().keypressEvent) {
 120             switch (static_cast<KeyboardEvent*>(evt)->charCode()) {
 121                 case '\r':
 122                     dispatchSimulatedClick(evt);
 123                     evt->setDefaultHandled();
 124                     return;
 125                 case ' ':
 126                     // Prevent scrolling down the page.
 127                     evt->setDefaultHandled();
 128                     return;
 129                 default:
 130                     break;
 131             }
 132         }
 133         if (evt->type() == eventNames().keyupEvent && static_cast<KeyboardEvent*>(evt)->keyIdentifier() == "U+0020") {
 134             if (active())
 135                 dispatchSimulatedClick(evt);
 136             evt->setDefaultHandled();
 137             return;
 138         }
 139     }
 140
 141     HTMLFormControlElement::defaultEventHandler(evt);
 142 }
 143
 144 bool HTMLButtonElement::isSuccessfulSubmitButton() const
 145 {
 146     // HTML spec says that buttons must have names to be considered successful.
 147     // However, other browsers do not impose this constraint.
 148     return m_type == SUBMIT && !disabled();
 149 }
 150
 151 bool HTMLButtonElement::isActivatedSubmit() const
 152 {
 153     return m_activeSubmit;
 154 }
 155
 156 void HTMLButtonElement::setActivatedSubmit(bool flag)
 157 {
 158     m_activeSubmit = flag;
 159 }
 160
 161 bool HTMLButtonElement::appendFormData(FormDataList& formData, bool)
 162 {
 163     if (m_type != SUBMIT || name().isEmpty() || !m_activeSubmit)
 164         return false;
 165     formData.appendData(name(), value());
 166     return true;
 167 }
 168
 169 void HTMLButtonElement::accessKeyAction(bool sendToAnyElement)
 170 {
 171     focus();
 172     // send the mouse button events iff the caller specified sendToAnyElement
 173     dispatchSimulatedClick(0, sendToAnyElement);
 174 }
 175
 176 String HTMLButtonElement::accessKey() const
 177 {
 178     return getAttribute(accesskeyAttr);
 179 }
 180
 181 void HTMLButtonElement::setAccessKey(const String &value)
 182 {
 183     setAttribute(accesskeyAttr, value);
 184 }
 185
 186 String HTMLButtonElement::value() const
 187 {
 188     return getAttribute(valueAttr);
 189 }
 190
 191 void HTMLButtonElement::setValue(const String &value)
 192 {
 193     setAttribute(valueAttr, value);
 194 }
 195
 196 } // namespace