TextFieldInputType.cpp [plain text]
#include "config.h"
#include "TextFieldInputType.h"
#include "BeforeTextInsertedEvent.h"
#include "Chrome.h"
#include "ChromeClient.h"
#include "Editor.h"
#include "FormDataList.h"
#include "Frame.h"
#include "FrameSelection.h"
#include "HTMLInputElement.h"
#include "HTMLNames.h"
#include "KeyboardEvent.h"
#include "NodeRenderStyle.h"
#include "Page.h"
#include "PlatformKeyboardEvent.h"
#include "RenderLayer.h"
#include "RenderTextControlSingleLine.h"
#include "RenderTheme.h"
#include "ShadowRoot.h"
#include "TextBreakIterator.h"
#include "TextControlInnerElements.h"
#include "TextEvent.h"
#include "TextIterator.h"
#include "TextNodeTraversal.h"
#include "WheelEvent.h"
namespace WebCore {
using namespace HTMLNames;
TextFieldInputType::TextFieldInputType(HTMLInputElement& element)
: InputType(element)
{
}
TextFieldInputType::~TextFieldInputType()
{
if (m_innerSpinButton)
m_innerSpinButton->removeSpinButtonOwner();
}
bool TextFieldInputType::isKeyboardFocusable(KeyboardEvent*) const
{
#if PLATFORM(IOS)
if (element().isReadOnly())
return false;
#endif
return element().isTextFormControlFocusable();
}
bool TextFieldInputType::isMouseFocusable() const
{
return element().isTextFormControlFocusable();
}
bool TextFieldInputType::isTextField() const
{
return true;
}
bool TextFieldInputType::isEmptyValue() const
{
TextControlInnerTextElement* innerText = innerTextElement();
ASSERT(innerText);
for (Text* text = TextNodeTraversal::firstWithin(*innerText); text; text = TextNodeTraversal::next(*text, innerText)) {
if (text->length())
return false;
}
return true;
}
bool TextFieldInputType::valueMissing(const String& value) const
{
return element().isRequired() && value.isEmpty();
}
void TextFieldInputType::setValue(const String& sanitizedValue, bool valueChanged, TextFieldEventBehavior eventBehavior)
{
Ref<HTMLInputElement> input(element());
InputType::setValue(sanitizedValue, valueChanged, DispatchNoEvent);
if (valueChanged)
updateInnerTextValue();
unsigned max = visibleValue().length();
if (input->focused())
input->setSelectionRange(max, max);
else
input->cacheSelectionInResponseToSetValue(max);
if (!valueChanged)
return;
switch (eventBehavior) {
case DispatchChangeEvent:
if (input->focused())
input->dispatchFormControlInputEvent();
else
input->dispatchFormControlChangeEvent();
break;
case DispatchInputAndChangeEvent: {
input->dispatchFormControlInputEvent();
input->dispatchFormControlChangeEvent();
break;
}
case DispatchNoEvent:
break;
}
if (!input->focused() || eventBehavior == DispatchNoEvent)
input->setTextAsOfLastFormControlChangeEvent(sanitizedValue);
}
void TextFieldInputType::handleKeydownEvent(KeyboardEvent* event)
{
if (!element().focused())
return;
Frame* frame = element().document().frame();
if (!frame || !frame->editor().doTextFieldCommandFromEvent(&element(), event))
return;
event->setDefaultHandled();
}
void TextFieldInputType::handleKeydownEventForSpinButton(KeyboardEvent* event)
{
if (element().isDisabledOrReadOnly())
return;
const String& key = event->keyIdentifier();
if (key == "Up")
spinButtonStepUp();
else if (key == "Down")
spinButtonStepDown();
else
return;
event->setDefaultHandled();
}
void TextFieldInputType::forwardEvent(Event* event)
{
if (m_innerSpinButton) {
m_innerSpinButton->forwardEvent(event);
if (event->defaultHandled())
return;
}
if (event->isMouseEvent()
|| event->isDragEvent()
|| event->eventInterface() == WheelEventInterfaceType
|| event->type() == eventNames().blurEvent
|| event->type() == eventNames().focusEvent)
{
element().document().updateStyleIfNeeded();
if (element().renderer()) {
RenderTextControlSingleLine& renderTextControl = downcast<RenderTextControlSingleLine>(*element().renderer());
if (event->type() == eventNames().blurEvent) {
if (RenderTextControlInnerBlock* innerTextRenderer = innerTextElement()->renderer()) {
if (RenderLayer* innerLayer = innerTextRenderer->layer()) {
IntSize scrollOffset(!renderTextControl.style().isLeftToRightDirection() ? innerLayer->scrollWidth() : 0, 0);
innerLayer->scrollToOffset(scrollOffset, RenderLayer::ScrollOffsetClamped);
}
}
capsLockStateMayHaveChanged();
} else if (event->type() == eventNames().focusEvent)
capsLockStateMayHaveChanged();
element().forwardEvent(event);
}
}
}
void TextFieldInputType::handleFocusEvent(Node* oldFocusedNode, FocusDirection)
{
ASSERT_UNUSED(oldFocusedNode, oldFocusedNode != &element());
if (Frame* frame = element().document().frame())
frame->editor().textFieldDidBeginEditing(&element());
}
void TextFieldInputType::handleBlurEvent()
{
InputType::handleBlurEvent();
element().endEditing();
}
bool TextFieldInputType::shouldSubmitImplicitly(Event* event)
{
return (event->type() == eventNames().textInputEvent && is<TextEvent>(*event) && downcast<TextEvent>(*event).data() == "\n")
|| InputType::shouldSubmitImplicitly(event);
}
RenderPtr<RenderElement> TextFieldInputType::createInputRenderer(Ref<RenderStyle>&& style)
{
return createRenderer<RenderTextControlSingleLine>(element(), WTF::move(style));
}
bool TextFieldInputType::needsContainer() const
{
return false;
}
bool TextFieldInputType::shouldHaveSpinButton() const
{
Document& document = element().document();
RefPtr<RenderTheme> theme = document.page() ? &document.page()->theme() : RenderTheme::defaultTheme();
return theme->shouldHaveSpinButton(element());
}
bool TextFieldInputType::shouldHaveCapsLockIndicator() const
{
Document& document = element().document();
RefPtr<RenderTheme> theme = document.page() ? &document.page()->theme() : RenderTheme::defaultTheme();
return theme->shouldHaveCapsLockIndicator(element());
}
void TextFieldInputType::createShadowSubtree()
{
ASSERT(element().shadowRoot());
ASSERT(!m_innerText);
ASSERT(!m_innerBlock);
ASSERT(!m_innerSpinButton);
ASSERT(!m_capsLockIndicator);
ASSERT(!m_autoFillButton);
Document& document = element().document();
bool shouldHaveSpinButton = this->shouldHaveSpinButton();
bool shouldHaveCapsLockIndicator = this->shouldHaveCapsLockIndicator();
bool createsContainer = shouldHaveSpinButton || shouldHaveCapsLockIndicator || needsContainer();
m_innerText = TextControlInnerTextElement::create(document);
if (!createsContainer) {
element().userAgentShadowRoot()->appendChild(m_innerText, IGNORE_EXCEPTION);
updatePlaceholderText();
return;
}
createContainer();
updatePlaceholderText();
if (shouldHaveSpinButton) {
m_innerSpinButton = SpinButtonElement::create(document, *this);
m_container->appendChild(m_innerSpinButton, IGNORE_EXCEPTION);
}
if (shouldHaveCapsLockIndicator) {
m_capsLockIndicator = HTMLDivElement::create(document);
m_capsLockIndicator->setPseudo(AtomicString("-webkit-caps-lock-indicator", AtomicString::ConstructFromLiteral));
bool shouldDrawCapsLockIndicator = this->shouldDrawCapsLockIndicator();
m_capsLockIndicator->setInlineStyleProperty(CSSPropertyDisplay, shouldDrawCapsLockIndicator ? CSSValueBlock : CSSValueNone, true);
m_container->appendChild(m_capsLockIndicator, IGNORE_EXCEPTION);
}
updateAutoFillButton();
}
HTMLElement* TextFieldInputType::containerElement() const
{
return m_container.get();
}
HTMLElement* TextFieldInputType::innerBlockElement() const
{
return m_innerBlock.get();
}
TextControlInnerTextElement* TextFieldInputType::innerTextElement() const
{
ASSERT(m_innerText);
return m_innerText.get();
}
HTMLElement* TextFieldInputType::innerSpinButtonElement() const
{
return m_innerSpinButton.get();
}
HTMLElement* TextFieldInputType::capsLockIndicatorElement() const
{
return m_capsLockIndicator.get();
}
HTMLElement* TextFieldInputType::autoFillButtonElement() const
{
return m_autoFillButton.get();
}
HTMLElement* TextFieldInputType::placeholderElement() const
{
return m_placeholder.get();
}
void TextFieldInputType::destroyShadowSubtree()
{
InputType::destroyShadowSubtree();
m_innerText = nullptr;
m_placeholder = nullptr;
m_innerBlock = nullptr;
if (m_innerSpinButton)
m_innerSpinButton->removeSpinButtonOwner();
m_innerSpinButton = nullptr;
m_capsLockIndicator = nullptr;
m_autoFillButton = nullptr;
m_container = nullptr;
}
void TextFieldInputType::attributeChanged()
{
updateInnerTextValue();
}
void TextFieldInputType::disabledAttributeChanged()
{
if (m_innerSpinButton)
m_innerSpinButton->releaseCapture();
capsLockStateMayHaveChanged();
updateAutoFillButton();
}
void TextFieldInputType::readonlyAttributeChanged()
{
if (m_innerSpinButton)
m_innerSpinButton->releaseCapture();
capsLockStateMayHaveChanged();
updateAutoFillButton();
}
bool TextFieldInputType::supportsReadOnly() const
{
return true;
}
bool TextFieldInputType::shouldUseInputMethod() const
{
return true;
}
static bool isASCIILineBreak(UChar c)
{
return c == '\r' || c == '\n';
}
static String limitLength(const String& string, int maxLength)
{
unsigned newLength = numCharactersInGraphemeClusters(string, maxLength);
for (unsigned i = 0; i < newLength; ++i) {
const UChar current = string[i];
if (current < ' ' && current != '\t') {
newLength = i;
break;
}
}
return string.left(newLength);
}
String TextFieldInputType::sanitizeValue(const String& proposedValue) const
{
return limitLength(proposedValue.removeCharacters(isASCIILineBreak), HTMLInputElement::maximumLength);
}
void TextFieldInputType::handleBeforeTextInsertedEvent(BeforeTextInsertedEvent* event)
{
String innerText = element().innerTextValue();
unsigned oldLength = numGraphemeClusters(innerText);
unsigned selectionLength = 0;
if (element().focused()) {
ASSERT(enclosingTextFormControl(element().document().frame()->selection().selection().start()) == &element());
int selectionStart = element().selectionStart();
ASSERT(selectionStart <= element().selectionEnd());
int selectionCodeUnitCount = element().selectionEnd() - selectionStart;
selectionLength = selectionCodeUnitCount ? numGraphemeClusters(innerText.substring(selectionStart, selectionCodeUnitCount)) : 0;
}
ASSERT(oldLength >= selectionLength);
unsigned baseLength = oldLength - selectionLength;
unsigned maxLength = static_cast<unsigned>(isTextType() ? element().maxLength() : HTMLInputElement::maximumLength); unsigned appendableLength = maxLength > baseLength ? maxLength - baseLength : 0;
String eventText = event->text();
unsigned textLength = eventText.length();
while (textLength > 0 && isASCIILineBreak(eventText[textLength - 1]))
textLength--;
eventText.truncate(textLength);
eventText.replace("\r\n", " ");
eventText.replace('\r', ' ');
eventText.replace('\n', ' ');
event->setText(limitLength(eventText, appendableLength));
}
bool TextFieldInputType::shouldRespectListAttribute()
{
return InputType::themeSupportsDataListUI(this);
}
void TextFieldInputType::updatePlaceholderText()
{
if (!supportsPlaceholder())
return;
String placeholderText = element().strippedPlaceholder();
if (placeholderText.isEmpty()) {
if (m_placeholder) {
m_placeholder->parentNode()->removeChild(m_placeholder.get(), ASSERT_NO_EXCEPTION);
m_placeholder = nullptr;
}
return;
}
if (!m_placeholder) {
m_placeholder = HTMLDivElement::create(element().document());
m_placeholder->setPseudo(AtomicString("-webkit-input-placeholder", AtomicString::ConstructFromLiteral));
m_placeholder->setInlineStyleProperty(CSSPropertyDisplay, element().isPlaceholderVisible() ? CSSValueBlock : CSSValueNone, true);
element().userAgentShadowRoot()->insertBefore(m_placeholder, m_container ? m_container.get() : innerTextElement(), ASSERT_NO_EXCEPTION);
}
m_placeholder->setInnerText(placeholderText, ASSERT_NO_EXCEPTION);
}
bool TextFieldInputType::appendFormData(FormDataList& list, bool multipart) const
{
InputType::appendFormData(list, multipart);
const AtomicString& dirnameAttrValue = element().fastGetAttribute(dirnameAttr);
if (!dirnameAttrValue.isNull())
list.appendData(dirnameAttrValue, element().directionForFormData());
return true;
}
String TextFieldInputType::convertFromVisibleValue(const String& visibleValue) const
{
return visibleValue;
}
void TextFieldInputType::subtreeHasChanged()
{
element().setChangedSinceLastFormControlChangeEvent(true);
element().setValueFromRenderer(sanitizeValue(convertFromVisibleValue(element().innerTextValue())));
element().updatePlaceholderVisibility();
element().setNeedsStyleRecalc();
didSetValueByUserEdit();
}
void TextFieldInputType::didSetValueByUserEdit()
{
if (!element().focused())
return;
if (Frame* frame = element().document().frame())
frame->editor().textDidChangeInTextField(&element());
}
void TextFieldInputType::spinButtonStepDown()
{
stepUpFromRenderer(-1);
}
void TextFieldInputType::spinButtonStepUp()
{
stepUpFromRenderer(1);
}
void TextFieldInputType::updateInnerTextValue()
{
if (!element().formControlValueMatchesRenderer()) {
element().setInnerTextValue(visibleValue());
element().updatePlaceholderVisibility();
}
}
void TextFieldInputType::focusAndSelectSpinButtonOwner()
{
Ref<HTMLInputElement> input(element());
input->focus();
input->select();
}
bool TextFieldInputType::shouldSpinButtonRespondToMouseEvents()
{
return !element().isDisabledOrReadOnly();
}
bool TextFieldInputType::shouldSpinButtonRespondToWheelEvents()
{
return shouldSpinButtonRespondToMouseEvents() && element().focused();
}
bool TextFieldInputType::shouldDrawCapsLockIndicator() const
{
if (element().document().focusedElement() != &element())
return false;
if (element().isDisabledOrReadOnly())
return false;
Frame* frame = element().document().frame();
if (!frame)
return false;
if (!frame->selection().isFocusedAndActive())
return false;
return PlatformKeyboardEvent::currentCapsLockState();
}
void TextFieldInputType::capsLockStateMayHaveChanged()
{
if (!m_capsLockIndicator)
return;
bool shouldDrawCapsLockIndicator = this->shouldDrawCapsLockIndicator();
m_capsLockIndicator->setInlineStyleProperty(CSSPropertyDisplay, shouldDrawCapsLockIndicator ? CSSValueBlock : CSSValueNone, true);
}
bool TextFieldInputType::shouldDrawAutoFillButton() const
{
return !element().isDisabledOrReadOnly() && element().showAutoFillButton();
}
void TextFieldInputType::autoFillButtonElementWasClicked()
{
Page* page = element().document().page();
if (!page)
return;
page->chrome().client().handleAutoFillButtonClick(element());
}
void TextFieldInputType::createContainer()
{
ASSERT(!m_container);
m_container = TextControlInnerContainer::create(element().document());
m_container->setPseudo(AtomicString("-webkit-textfield-decoration-container", AtomicString::ConstructFromLiteral));
m_innerBlock = TextControlInnerElement::create(element().document());
m_innerBlock->appendChild(m_innerText, IGNORE_EXCEPTION);
m_container->appendChild(m_innerBlock, IGNORE_EXCEPTION);
element().userAgentShadowRoot()->appendChild(m_container, IGNORE_EXCEPTION);
}
void TextFieldInputType::createAutoFillButton()
{
ASSERT(!m_autoFillButton);
m_autoFillButton = AutoFillButtonElement::create(element().document(), *this);
m_autoFillButton->setPseudo(AtomicString("-webkit-auto-fill-button", AtomicString::ConstructFromLiteral));
m_container->appendChild(m_autoFillButton, IGNORE_EXCEPTION);
}
void TextFieldInputType::updateAutoFillButton()
{
if (shouldDrawAutoFillButton()) {
if (!m_container)
createContainer();
if (!m_autoFillButton)
createAutoFillButton();
m_autoFillButton->setInlineStyleProperty(CSSPropertyDisplay, CSSValueBlock, true);
return;
}
if (m_autoFillButton)
m_autoFillButton->setInlineStyleProperty(CSSPropertyDisplay, CSSValueNone, true);
}
}