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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
* (C) 2006 Alexey Proskuryakov (ap@nypop.com)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "HTMLFormControlElement.h"
#include "Chrome.h"
#include "ChromeClient.h"
#include "Document.h"
#include "Event.h"
#include "EventHandler.h"
#include "EventNames.h"
#include "Frame.h"
#include "HTMLFormElement.h"
#include "HTMLInputElement.h"
#include "HTMLNames.h"
#include "HTMLParser.h"
#include "HTMLTokenizer.h"
#include "MappedAttribute.h"
#include "Page.h"
#include "RenderBox.h"
#include "RenderTextControl.h"
#include "RenderTheme.h"
#include "ScriptEventListener.h"
#include "ValidityState.h"
namespace WebCore {
using namespace HTMLNames;
HTMLFormControlElement::HTMLFormControlElement(const QualifiedName& tagName, Document* doc, HTMLFormElement* f)
: HTMLElement(tagName, doc)
, m_form(f)
, m_disabled(false)
, m_readOnly(false)
, m_required(false)
, m_valueMatchesRenderer(false)
{
if (!m_form)
m_form = findFormAncestor();
if (m_form)
m_form->registerFormElement(this);
}
HTMLFormControlElement::~HTMLFormControlElement()
{
if (m_form)
m_form->removeFormElement(this);
}
bool HTMLFormControlElement::formNoValidate() const
{
return !getAttribute(formnovalidateAttr).isNull();
}
void HTMLFormControlElement::setFormNoValidate(bool formnovalidate)
{
setAttribute(formnovalidateAttr, formnovalidate ? "" : 0);
}
ValidityState* HTMLFormControlElement::validity()
{
if (!m_validityState)
m_validityState = ValidityState::create(this);
return m_validityState.get();
}
void HTMLFormControlElement::parseMappedAttribute(MappedAttribute *attr)
{
if (attr->name() == nameAttr)
setNeedsStyleRecalc();
else if (attr->name() == disabledAttr) {
bool oldDisabled = m_disabled;
m_disabled = !attr->isNull();
if (oldDisabled != m_disabled) {
setNeedsStyleRecalc();
if (renderer() && renderer()->style()->hasAppearance())
renderer()->theme()->stateChanged(renderer(), EnabledState);
}
} else if (attr->name() == readonlyAttr) {
bool oldReadOnly = m_readOnly;
m_readOnly = !attr->isNull();
if (oldReadOnly != m_readOnly) {
setNeedsStyleRecalc();
if (renderer() && renderer()->style()->hasAppearance())
renderer()->theme()->stateChanged(renderer(), ReadOnlyState);
}
} else if (attr->name() == requiredAttr) {
bool oldRequired = m_required;
m_required = !attr->isNull();
if (oldRequired != m_required)
setNeedsStyleRecalc();
} else
HTMLElement::parseMappedAttribute(attr);
}
void HTMLFormControlElement::attach()
{
ASSERT(!attached());
HTMLElement::attach();
// The call to updateFromElement() needs to go after the call through
// to the base class's attach() because that can sometimes do a close
// on the renderer.
if (renderer())
renderer()->updateFromElement();
// Focus the element if it should honour its autofocus attribute.
// We have to determine if the element is a TextArea/Input/Button/Select,
// if input type hidden ignore autofocus. So if disabled or readonly.
bool isInputTypeHidden = false;
if (hasTagName(inputTag))
isInputTypeHidden = static_cast<HTMLInputElement*>(this)->isInputTypeHidden();
if (autofocus() && renderer() && !document()->ignoreAutofocus() && !isReadOnlyFormControl() &&
((hasTagName(inputTag) && !isInputTypeHidden) || hasTagName(selectTag) ||
hasTagName(buttonTag) || hasTagName(textareaTag)))
focus();
}
void HTMLFormControlElement::insertedIntoTree(bool deep)
{
if (!m_form) {
// This handles the case of a new form element being created by
// JavaScript and inserted inside a form. In the case of the parser
// setting a form, we will already have a non-null value for m_form,
// and so we don't need to do anything.
m_form = findFormAncestor();
if (m_form)
m_form->registerFormElement(this);
else
document()->checkedRadioButtons().addButton(this);
}
HTMLElement::insertedIntoTree(deep);
}
static inline Node* findRoot(Node* n)
{
Node* root = n;
for (; n; n = n->parentNode())
root = n;
return root;
}
void HTMLFormControlElement::removedFromTree(bool deep)
{
// If the form and element are both in the same tree, preserve the connection to the form.
// Otherwise, null out our form and remove ourselves from the form's list of elements.
HTMLParser* parser = 0;
if (Tokenizer* tokenizer = document()->tokenizer())
if (tokenizer->isHTMLTokenizer())
parser = static_cast<HTMLTokenizer*>(tokenizer)->htmlParser();
if (m_form && !(parser && parser->isHandlingResidualStyleAcrossBlocks()) && findRoot(this) != findRoot(m_form)) {
m_form->removeFormElement(this);
m_form = 0;
}
HTMLElement::removedFromTree(deep);
}
const AtomicString& HTMLFormControlElement::formControlName() const
{
const AtomicString& n = getAttribute(nameAttr);
return n.isNull() ? emptyAtom : n;
}
void HTMLFormControlElement::setName(const AtomicString &value)
{
setAttribute(nameAttr, value);
}
void HTMLFormControlElement::dispatchFormControlChangeEvent()
{
dispatchEvent(Event::create(eventNames().changeEvent, true, false));
}
bool HTMLFormControlElement::disabled() const
{
return m_disabled;
}
void HTMLFormControlElement::setDisabled(bool b)
{
setAttribute(disabledAttr, b ? "" : 0);
}
void HTMLFormControlElement::setReadOnly(bool b)
{
setAttribute(readonlyAttr, b ? "" : 0);
}
bool HTMLFormControlElement::autofocus() const
{
return hasAttribute(autofocusAttr);
}
void HTMLFormControlElement::setAutofocus(bool b)
{
setAttribute(autofocusAttr, b ? "autofocus" : 0);
}
bool HTMLFormControlElement::required() const
{
return m_required;
}
void HTMLFormControlElement::setRequired(bool b)
{
setAttribute(requiredAttr, b ? "required" : 0);
}
static void updateFromElementCallback(Node* node)
{
ASSERT_ARG(node, node->isElementNode());
ASSERT_ARG(node, static_cast<Element*>(node)->isFormControlElement());
ASSERT(node->renderer());
if (RenderObject* renderer = node->renderer())
renderer->updateFromElement();
}
void HTMLFormControlElement::recalcStyle(StyleChange change)
{
HTMLElement::recalcStyle(change);
// updateFromElement() can cause the selection to change, and in turn
// trigger synchronous layout, so it must not be called during style recalc.
if (renderer())
queuePostAttachCallback(updateFromElementCallback, this);
}
bool HTMLFormControlElement::supportsFocus() const
{
return !disabled();
}
bool HTMLFormControlElement::isFocusable() const
{
if (!renderer() ||
!renderer()->isBox() || toRenderBox(renderer())->size().isEmpty())
return false;
// HTMLElement::isFocusable handles visibility and calls suportsFocus which
// will cover the disabled case.
return HTMLElement::isFocusable();
}
bool HTMLFormControlElement::isKeyboardFocusable(KeyboardEvent* event) const
{
if (isFocusable())
if (document()->frame())
return document()->frame()->eventHandler()->tabsToAllControls(event);
return false;
}
bool HTMLFormControlElement::isMouseFocusable() const
{
#if PLATFORM(GTK)
return HTMLElement::isMouseFocusable();
#else
return false;
#endif
}
short HTMLFormControlElement::tabIndex() const
{
// Skip the supportsFocus check in HTMLElement.
return Element::tabIndex();
}
bool HTMLFormControlElement::willValidate() const
{
// FIXME: Implementation shall be completed with these checks:
// The control does not have a repetition template as an ancestor.
// The control does not have a datalist element as an ancestor.
// The control is not an output element.
return form() && !name().isEmpty() && !disabled() && !isReadOnlyFormControl();
}
String HTMLFormControlElement::validationMessage()
{
return validity()->validationMessage();
}
bool HTMLFormControlElement::checkValidity()
{
if (willValidate() && !isValidFormControlElement()) {
dispatchEvent(Event::create(eventNames().invalidEvent, false, true));
return false;
}
return true;
}
void HTMLFormControlElement::updateValidity()
{
if (willValidate()) {
// Update style for pseudo classes such as :valid :invalid.
setNeedsStyleRecalc();
}
}
void HTMLFormControlElement::setCustomValidity(const String& error)
{
validity()->setCustomErrorMessage(error);
}
void HTMLFormControlElement::dispatchFocusEvent()
{
if (document()->frame() && document()->frame()->page())
document()->frame()->page()->chrome()->client()->formDidFocus(this);
HTMLElement::dispatchFocusEvent();
}
void HTMLFormControlElement::dispatchBlurEvent()
{
if (document()->frame() && document()->frame()->page())
document()->frame()->page()->chrome()->client()->formDidBlur(this);
HTMLElement::dispatchBlurEvent();
}
HTMLFormElement* HTMLFormControlElement::virtualForm() const
{
return m_form;
}
bool HTMLFormControlElement::isDefaultButtonForForm() const
{
return isSuccessfulSubmitButton() && m_form && m_form->defaultButton() == this;
}
bool HTMLFormControlElement::isValidFormControlElement()
{
return validity()->valid();
}
void HTMLFormControlElement::removeFromForm()
{
if (!m_form)
return;
m_form->removeFormElement(this);
m_form = 0;
}
HTMLFormControlElementWithState::HTMLFormControlElementWithState(const QualifiedName& tagName, Document* doc, HTMLFormElement* f)
: HTMLFormControlElement(tagName, doc, f)
{
document()->registerFormElementWithState(this);
}
HTMLFormControlElementWithState::~HTMLFormControlElementWithState()
{
document()->unregisterFormElementWithState(this);
}
void HTMLFormControlElementWithState::willMoveToNewOwnerDocument()
{
document()->unregisterFormElementWithState(this);
HTMLFormControlElement::willMoveToNewOwnerDocument();
}
void HTMLFormControlElementWithState::didMoveToNewOwnerDocument()
{
document()->registerFormElementWithState(this);
HTMLFormControlElement::didMoveToNewOwnerDocument();
}
void HTMLFormControlElementWithState::finishParsingChildren()
{
HTMLFormControlElement::finishParsingChildren();
Document* doc = document();
if (doc->hasStateForNewFormElements()) {
String state;
if (doc->takeStateForFormElement(name().impl(), type().impl(), state))
restoreFormControlState(state);
}
}
HTMLTextFormControlElement::HTMLTextFormControlElement(const QualifiedName& tagName, Document* doc, HTMLFormElement* form)
: HTMLFormControlElementWithState(tagName, doc, form)
{
}
HTMLTextFormControlElement::~HTMLTextFormControlElement()
{
}
void HTMLTextFormControlElement::dispatchFocusEvent()
{
if (supportsPlaceholder())
updatePlaceholderVisibility(false);
handleFocusEvent();
HTMLFormControlElementWithState::dispatchFocusEvent();
}
void HTMLTextFormControlElement::dispatchBlurEvent()
{
if (supportsPlaceholder())
updatePlaceholderVisibility(false);
handleBlurEvent();
HTMLFormControlElementWithState::dispatchBlurEvent();
}
bool HTMLTextFormControlElement::placeholderShouldBeVisible() const
{
return supportsPlaceholder()
&& isEmptyValue()
&& document()->focusedNode() != this
&& !getAttribute(placeholderAttr).isEmpty();
}
void HTMLTextFormControlElement::updatePlaceholderVisibility(bool placeholderValueChanged)
{
if (supportsPlaceholder() && renderer())
toRenderTextControl(renderer())->updatePlaceholderVisibility(placeholderShouldBeVisible(), placeholderValueChanged);
}
RenderTextControl* HTMLTextFormControlElement::textRendererAfterUpdateLayout()
{
if (!isTextFormControl())
return 0;
document()->updateLayoutIgnorePendingStylesheets();
return toRenderTextControl(renderer());
}
void HTMLTextFormControlElement::setSelectionStart(int start)
{
if (RenderTextControl* renderer = textRendererAfterUpdateLayout())
renderer->setSelectionStart(start);
}
void HTMLTextFormControlElement::setSelectionEnd(int end)
{
if (RenderTextControl* renderer = textRendererAfterUpdateLayout())
renderer->setSelectionEnd(end);
}
void HTMLTextFormControlElement::select()
{
if (RenderTextControl* renderer = textRendererAfterUpdateLayout())
renderer->select();
}
void HTMLTextFormControlElement::setSelectionRange(int start, int end)
{
if (RenderTextControl* renderer = textRendererAfterUpdateLayout())
renderer->setSelectionRange(start, end);
}
int HTMLTextFormControlElement::selectionStart()
{
if (!isTextFormControl())
return 0;
if (document()->focusedNode() != this && cachedSelectionStart() >= 0)
return cachedSelectionStart();
if (!renderer())
return 0;
return toRenderTextControl(renderer())->selectionStart();
}
int HTMLTextFormControlElement::selectionEnd()
{
if (!isTextFormControl())
return 0;
if (document()->focusedNode() != this && cachedSelectionEnd() >= 0)
return cachedSelectionEnd();
if (!renderer())
return 0;
return toRenderTextControl(renderer())->selectionEnd();
}
VisibleSelection HTMLTextFormControlElement::selection() const
{
if (!renderer() || !isTextFormControl() || cachedSelectionStart() < 0 || cachedSelectionEnd() < 0)
return VisibleSelection();
return toRenderTextControl(renderer())->selection(cachedSelectionStart(), cachedSelectionEnd());
}
void HTMLTextFormControlElement::parseMappedAttribute(MappedAttribute* attr)
{
if (attr->name() == placeholderAttr)
updatePlaceholderVisibility(true);
else if (attr->name() == onfocusAttr)
setAttributeEventListener(eventNames().focusEvent, createAttributeEventListener(this, attr));
else if (attr->name() == onblurAttr)
setAttributeEventListener(eventNames().blurEvent, createAttributeEventListener(this, attr));
else if (attr->name() == onselectAttr)
setAttributeEventListener(eventNames().selectEvent, createAttributeEventListener(this, attr));
else if (attr->name() == onchangeAttr)
setAttributeEventListener(eventNames().changeEvent, createAttributeEventListener(this, attr));
else
HTMLFormControlElementWithState::parseMappedAttribute(attr);
}
} // namespace Webcore
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