src/third_party/WebKit/Source/core/html/shadow/DateTimeEditElement.cpp

   1 /*
   2  * Copyright (C) 2012 Google Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1.  Redistributions of source code must retain the above copyright
   8  *     notice, this list of conditions and the following disclaimer.
   9  * 2.  Redistributions in binary form must reproduce the above copyright
  10  *     notice, this list of conditions and the following disclaimer in the
  11  *     documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
  14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE
  17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  19  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  20  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  23  * SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #if ENABLE(INPUT_MULTIPLE_FIELDS_UI)
  28 #include "core/html/shadow/DateTimeEditElement.h"
  29
  30 #include "HTMLNames.h"
  31 #include "bindings/v8/ExceptionStatePlaceholder.h"
  32 #include "core/dom/Text.h"
  33 #include "core/events/MouseEvent.h"
  34 #include "core/html/forms/DateTimeFieldsState.h"
  35 #include "core/html/shadow/DateTimeFieldElements.h"
  36 #include "core/html/shadow/ShadowElementNames.h"
  37 #include "core/platform/graphics/FontCache.h"
  38 #include "core/rendering/style/RenderStyle.h"
  39 #include "core/rendering/style/StyleInheritedData.h"
  40 #include "platform/DateComponents.h"
  41 #include "platform/text/DateTimeFormat.h"
  42 #include "platform/text/PlatformLocale.h"
  43 #include "wtf/DateMath.h"
  44
  45 namespace WebCore {
  46
  47 using namespace HTMLNames;
  48 using namespace WTF::Unicode;
  49
  50 class DateTimeEditBuilder : private DateTimeFormat::TokenHandler {
  51     WTF_MAKE_NONCOPYABLE(DateTimeEditBuilder);
  52
  53 public:
  54     // The argument objects must be alive until this object dies.
  55     DateTimeEditBuilder(DateTimeEditElement&, const DateTimeEditElement::LayoutParameters&, const DateComponents&);
  56
  57     bool build(const String&);
  58
  59 private:
  60     bool needMillisecondField() const;
  61     bool shouldAMPMFieldDisabled() const;
  62     bool shouldDayOfMonthFieldDisabled() const;
  63     bool shouldHourFieldDisabled() const;
  64     bool shouldMillisecondFieldDisabled() const;
  65     bool shouldMinuteFieldDisabled() const;
  66     bool shouldSecondFieldDisabled() const;
  67     bool shouldYearFieldDisabled() const;
  68     inline const StepRange& stepRange() const { return m_parameters.stepRange; }
  69     DateTimeNumericFieldElement::Step createStep(double msPerFieldUnit, double msPerFieldSize) const;
  70
  71     // DateTimeFormat::TokenHandler functions.
  72     virtual void visitField(DateTimeFormat::FieldType, int) OVERRIDE FINAL;
  73     virtual void visitLiteral(const String&) OVERRIDE FINAL;
  74
  75     DateTimeEditElement& m_editElement;
  76     const DateComponents m_dateValue;
  77     const DateTimeEditElement::LayoutParameters& m_parameters;
  78     DateTimeNumericFieldElement::Range m_dayRange;
  79     DateTimeNumericFieldElement::Range m_hour23Range;
  80     DateTimeNumericFieldElement::Range m_minuteRange;
  81     DateTimeNumericFieldElement::Range m_secondRange;
  82     DateTimeNumericFieldElement::Range m_millisecondRange;
  83 };
  84
  85 DateTimeEditBuilder::DateTimeEditBuilder(DateTimeEditElement& elemnt, const DateTimeEditElement::LayoutParameters& layoutParameters, const DateComponents& dateValue)
  86     : m_editElement(elemnt)
  87     , m_dateValue(dateValue)
  88     , m_parameters(layoutParameters)
  89     , m_dayRange(1, 31)
  90     , m_hour23Range(0, 23)
  91     , m_minuteRange(0, 59)
  92     , m_secondRange(0, 59)
  93     , m_millisecondRange(0, 999)
  94 {
  95     if (m_dateValue.type() == DateComponents::Date || m_dateValue.type() == DateComponents::DateTimeLocal) {
  96         if (m_parameters.minimum.type() != DateComponents::Invalid
  97             && m_parameters.maximum.type() != DateComponents::Invalid
  98             && m_parameters.minimum.fullYear() == m_parameters.maximum.fullYear()
  99             && m_parameters.minimum.month() == m_parameters.maximum.month()
 100             && m_parameters.minimum.monthDay() <= m_parameters.maximum.monthDay()) {
 101             m_dayRange.minimum = m_parameters.minimum.monthDay();
 102             m_dayRange.maximum = m_parameters.maximum.monthDay();
 103         }
 104     }
 105
 106     if (m_dateValue.type() == DateComponents::Time || m_dayRange.isSingleton()) {
 107         if (m_parameters.minimum.type() != DateComponents::Invalid
 108             && m_parameters.maximum.type() != DateComponents::Invalid
 109             && m_parameters.minimum.hour() <= m_parameters.maximum.hour()) {
 110             m_hour23Range.minimum = m_parameters.minimum.hour();
 111             m_hour23Range.maximum = m_parameters.maximum.hour();
 112         }
 113     }
 114
 115     if (m_hour23Range.isSingleton() && m_parameters.minimum.minute() <= m_parameters.maximum.minute()) {
 116         m_minuteRange.minimum = m_parameters.minimum.minute();
 117         m_minuteRange.maximum = m_parameters.maximum.minute();
 118     }
 119     if (m_minuteRange.isSingleton() && m_parameters.minimum.second() <= m_parameters.maximum.second()) {
 120         m_secondRange.minimum = m_parameters.minimum.second();
 121         m_secondRange.maximum = m_parameters.maximum.second();
 122     }
 123     if (m_secondRange.isSingleton() && m_parameters.minimum.millisecond() <= m_parameters.maximum.millisecond()) {
 124         m_millisecondRange.minimum = m_parameters.minimum.millisecond();
 125         m_millisecondRange.maximum = m_parameters.maximum.millisecond();
 126     }
 127 }
 128
 129 bool DateTimeEditBuilder::build(const String& formatString)
 130 {
 131     m_editElement.resetFields();
 132     return DateTimeFormat::parse(formatString, *this);
 133 }
 134
 135 bool DateTimeEditBuilder::needMillisecondField() const
 136 {
 137     return m_dateValue.millisecond()
 138         || !stepRange().minimum().remainder(static_cast<int>(msPerSecond)).isZero()
 139         || !stepRange().step().remainder(static_cast<int>(msPerSecond)).isZero();
 140 }
 141
 142 void DateTimeEditBuilder::visitField(DateTimeFormat::FieldType fieldType, int count)
 143 {
 144     const int countForAbbreviatedMonth = 3;
 145     const int countForFullMonth = 4;
 146     const int countForNarrowMonth = 5;
 147     Document& document = m_editElement.document();
 148
 149     switch (fieldType) {
 150     case DateTimeFormat::FieldTypeDayOfMonth: {
 151         RefPtr<DateTimeFieldElement> field = DateTimeDayFieldElement::create(document, m_editElement, m_parameters.placeholderForDay, m_dayRange);
 152         m_editElement.addField(field);
 153         if (shouldDayOfMonthFieldDisabled()) {
 154             field->setValueAsDate(m_dateValue);
 155             field->setDisabled();
 156         }
 157         return;
 158     }
 159
 160     case DateTimeFormat::FieldTypeHour11: {
 161         DateTimeNumericFieldElement::Step step = createStep(msPerHour, msPerHour * 12);
 162         RefPtr<DateTimeFieldElement> field = DateTimeHour11FieldElement::create(document, m_editElement, m_hour23Range, step);
 163         m_editElement.addField(field);
 164         if (shouldHourFieldDisabled()) {
 165             field->setValueAsDate(m_dateValue);
 166             field->setDisabled();
 167         }
 168         return;
 169     }
 170
 171     case DateTimeFormat::FieldTypeHour12: {
 172         DateTimeNumericFieldElement::Step step = createStep(msPerHour, msPerHour * 12);
 173         RefPtr<DateTimeFieldElement> field = DateTimeHour12FieldElement::create(document, m_editElement, m_hour23Range, step);
 174         m_editElement.addField(field);
 175         if (shouldHourFieldDisabled()) {
 176             field->setValueAsDate(m_dateValue);
 177             field->setDisabled();
 178         }
 179         return;
 180     }
 181
 182     case DateTimeFormat::FieldTypeHour23: {
 183         DateTimeNumericFieldElement::Step step = createStep(msPerHour, msPerDay);
 184         RefPtr<DateTimeFieldElement> field = DateTimeHour23FieldElement::create(document, m_editElement, m_hour23Range, step);
 185         m_editElement.addField(field);
 186         if (shouldHourFieldDisabled()) {
 187             field->setValueAsDate(m_dateValue);
 188             field->setDisabled();
 189         }
 190         return;
 191     }
 192
 193     case DateTimeFormat::FieldTypeHour24: {
 194         DateTimeNumericFieldElement::Step step = createStep(msPerHour, msPerDay);
 195         RefPtr<DateTimeFieldElement> field = DateTimeHour24FieldElement::create(document, m_editElement, m_hour23Range, step);
 196         m_editElement.addField(field);
 197         if (shouldHourFieldDisabled()) {
 198             field->setValueAsDate(m_dateValue);
 199             field->setDisabled();
 200         }
 201         return;
 202     }
 203
 204     case DateTimeFormat::FieldTypeMinute: {
 205         DateTimeNumericFieldElement::Step step = createStep(msPerMinute, msPerHour);
 206         RefPtr<DateTimeNumericFieldElement> field = DateTimeMinuteFieldElement::create(document, m_editElement, m_minuteRange, step);
 207         m_editElement.addField(field);
 208         if (shouldMinuteFieldDisabled()) {
 209             field->setValueAsDate(m_dateValue);
 210             field->setDisabled();
 211         }
 212         return;
 213     }
 214
 215     case DateTimeFormat::FieldTypeMonth: // Fallthrough.
 216     case DateTimeFormat::FieldTypeMonthStandAlone: {
 217         int minMonth = 0, maxMonth = 11;
 218         if (m_parameters.minimum.type() != DateComponents::Invalid
 219             && m_parameters.maximum.type() != DateComponents::Invalid
 220             && m_parameters.minimum.fullYear() == m_parameters.maximum.fullYear()
 221             && m_parameters.minimum.month() <= m_parameters.maximum.month()) {
 222             minMonth = m_parameters.minimum.month();
 223             maxMonth = m_parameters.maximum.month();
 224         }
 225         RefPtr<DateTimeFieldElement> field;
 226         switch (count) {
 227         case countForNarrowMonth: // Fallthrough.
 228         case countForAbbreviatedMonth:
 229             field = DateTimeSymbolicMonthFieldElement::create(document, m_editElement, fieldType == DateTimeFormat::FieldTypeMonth ? m_parameters.locale.shortMonthLabels() : m_parameters.locale.shortStandAloneMonthLabels(), minMonth, maxMonth);
 230             break;
 231         case countForFullMonth:
 232             field = DateTimeSymbolicMonthFieldElement::create(document, m_editElement, fieldType == DateTimeFormat::FieldTypeMonth ? m_parameters.locale.monthLabels() : m_parameters.locale.standAloneMonthLabels(), minMonth, maxMonth);
 233             break;
 234         default:
 235             field = DateTimeMonthFieldElement::create(document, m_editElement, m_parameters.placeholderForMonth, DateTimeNumericFieldElement::Range(minMonth + 1, maxMonth + 1));
 236             break;
 237         }
 238         m_editElement.addField(field);
 239         if (minMonth == maxMonth && minMonth == m_dateValue.month() && m_dateValue.type() != DateComponents::Month) {
 240             field->setValueAsDate(m_dateValue);
 241             field->setDisabled();
 242         }
 243         return;
 244     }
 245
 246     case DateTimeFormat::FieldTypePeriod: {
 247         RefPtr<DateTimeFieldElement> field = DateTimeAMPMFieldElement::create(document, m_editElement, m_parameters.locale.timeAMPMLabels());
 248         m_editElement.addField(field);
 249         if (shouldAMPMFieldDisabled()) {
 250             field->setValueAsDate(m_dateValue);
 251             field->setDisabled();
 252         }
 253         return;
 254     }
 255
 256     case DateTimeFormat::FieldTypeSecond: {
 257         DateTimeNumericFieldElement::Step step = createStep(msPerSecond, msPerMinute);
 258         RefPtr<DateTimeNumericFieldElement> field = DateTimeSecondFieldElement::create(document, m_editElement, m_secondRange, step);
 259         m_editElement.addField(field);
 260         if (shouldSecondFieldDisabled()) {
 261             field->setValueAsDate(m_dateValue);
 262             field->setDisabled();
 263         }
 264
 265         if (needMillisecondField()) {
 266             visitLiteral(m_parameters.locale.localizedDecimalSeparator());
 267             visitField(DateTimeFormat::FieldTypeFractionalSecond, 3);
 268         }
 269         return;
 270     }
 271
 272     case DateTimeFormat::FieldTypeFractionalSecond: {
 273         DateTimeNumericFieldElement::Step step = createStep(1, msPerSecond);
 274         RefPtr<DateTimeNumericFieldElement> field = DateTimeMillisecondFieldElement::create(document, m_editElement, m_millisecondRange, step);
 275         m_editElement.addField(field);
 276         if (shouldMillisecondFieldDisabled()) {
 277             field->setValueAsDate(m_dateValue);
 278             field->setDisabled();
 279         }
 280         return;
 281     }
 282
 283     case DateTimeFormat::FieldTypeWeekOfYear: {
 284         DateTimeNumericFieldElement::Range range(DateComponents::minimumWeekNumber, DateComponents::maximumWeekNumber);
 285         if (m_parameters.minimum.type() != DateComponents::Invalid
 286             && m_parameters.maximum.type() != DateComponents::Invalid
 287             && m_parameters.minimum.fullYear() == m_parameters.maximum.fullYear()
 288             && m_parameters.minimum.week() <= m_parameters.maximum.week()) {
 289             range.minimum = m_parameters.minimum.week();
 290             range.maximum = m_parameters.maximum.week();
 291         }
 292         m_editElement.addField(DateTimeWeekFieldElement::create(document, m_editElement, range));
 293         return;
 294     }
 295
 296     case DateTimeFormat::FieldTypeYear: {
 297         DateTimeYearFieldElement::Parameters yearParams;
 298         if (m_parameters.minimum.type() == DateComponents::Invalid) {
 299             yearParams.minimumYear = DateComponents::minimumYear();
 300             yearParams.minIsSpecified = false;
 301         } else {
 302             yearParams.minimumYear = m_parameters.minimum.fullYear();
 303             yearParams.minIsSpecified = true;
 304         }
 305         if (m_parameters.maximum.type() == DateComponents::Invalid) {
 306             yearParams.maximumYear = DateComponents::maximumYear();
 307             yearParams.maxIsSpecified = false;
 308         } else {
 309             yearParams.maximumYear = m_parameters.maximum.fullYear();
 310             yearParams.maxIsSpecified = true;
 311         }
 312         if (yearParams.minimumYear > yearParams.maximumYear) {
 313             std::swap(yearParams.minimumYear, yearParams.maximumYear);
 314             std::swap(yearParams.minIsSpecified, yearParams.maxIsSpecified);
 315         }
 316         yearParams.placeholder = m_parameters.placeholderForYear;
 317         RefPtr<DateTimeFieldElement> field = DateTimeYearFieldElement::create(document, m_editElement, yearParams);
 318         m_editElement.addField(field);
 319         if (shouldYearFieldDisabled()) {
 320             field->setValueAsDate(m_dateValue);
 321             field->setDisabled();
 322         }
 323         return;
 324     }
 325
 326     default:
 327         return;
 328     }
 329 }
 330
 331 bool DateTimeEditBuilder::shouldAMPMFieldDisabled() const
 332 {
 333     return shouldHourFieldDisabled()
 334         || (m_hour23Range.minimum < 12 && m_hour23Range.maximum < 12 && m_dateValue.hour() < 12)
 335         || (m_hour23Range.minimum >= 12 && m_hour23Range.maximum >= 12 && m_dateValue.hour() >= 12);
 336 }
 337
 338 bool DateTimeEditBuilder::shouldDayOfMonthFieldDisabled() const
 339 {
 340     return m_dayRange.isSingleton() && m_dayRange.minimum == m_dateValue.monthDay() && m_dateValue.type() != DateComponents::Date;
 341 }
 342
 343 bool DateTimeEditBuilder::shouldHourFieldDisabled() const
 344 {
 345     if (m_hour23Range.isSingleton() && m_hour23Range.minimum == m_dateValue.hour()
 346         && !(shouldMinuteFieldDisabled() && shouldSecondFieldDisabled() && shouldMillisecondFieldDisabled()))
 347         return true;
 348
 349     if (m_dateValue.type() == DateComponents::Time)
 350         return false;
 351     ASSERT(m_dateValue.type() == DateComponents::DateTimeLocal);
 352
 353     if (shouldDayOfMonthFieldDisabled()) {
 354         ASSERT(m_parameters.minimum.fullYear() == m_parameters.maximum.fullYear());
 355         ASSERT(m_parameters.minimum.month() == m_parameters.maximum.month());
 356         return false;
 357     }
 358
 359     const Decimal decimalMsPerDay(static_cast<int>(msPerDay));
 360     Decimal hourPartOfMinimum = (stepRange().minimum().abs().remainder(decimalMsPerDay) / static_cast<int>(msPerHour)).floor();
 361     return hourPartOfMinimum == m_dateValue.hour() && stepRange().step().remainder(decimalMsPerDay).isZero();
 362 }
 363
 364 bool DateTimeEditBuilder::shouldMillisecondFieldDisabled() const
 365 {
 366     if (m_millisecondRange.isSingleton() && m_millisecondRange.minimum == m_dateValue.millisecond())
 367         return true;
 368
 369     const Decimal decimalMsPerSecond(static_cast<int>(msPerSecond));
 370     return stepRange().minimum().abs().remainder(decimalMsPerSecond) == m_dateValue.millisecond() && stepRange().step().remainder(decimalMsPerSecond).isZero();
 371 }
 372
 373 bool DateTimeEditBuilder::shouldMinuteFieldDisabled() const
 374 {
 375     if (m_minuteRange.isSingleton() && m_minuteRange.minimum == m_dateValue.minute())
 376         return true;
 377
 378     const Decimal decimalMsPerHour(static_cast<int>(msPerHour));
 379     Decimal minutePartOfMinimum = (stepRange().minimum().abs().remainder(decimalMsPerHour) / static_cast<int>(msPerMinute)).floor();
 380     return minutePartOfMinimum == m_dateValue.minute() && stepRange().step().remainder(decimalMsPerHour).isZero();
 381 }
 382
 383 bool DateTimeEditBuilder::shouldSecondFieldDisabled() const
 384 {
 385     if (m_secondRange.isSingleton() && m_secondRange.minimum == m_dateValue.second())
 386         return true;
 387
 388     const Decimal decimalMsPerMinute(static_cast<int>(msPerMinute));
 389     Decimal secondPartOfMinimum = (stepRange().minimum().abs().remainder(decimalMsPerMinute) / static_cast<int>(msPerSecond)).floor();
 390     return secondPartOfMinimum == m_dateValue.second() && stepRange().step().remainder(decimalMsPerMinute).isZero();
 391 }
 392
 393 bool DateTimeEditBuilder::shouldYearFieldDisabled() const
 394 {
 395     return m_parameters.minimum.type() != DateComponents::Invalid
 396         && m_parameters.maximum.type() != DateComponents::Invalid
 397         && m_parameters.minimum.fullYear() == m_parameters.maximum.fullYear()
 398         && m_parameters.minimum.fullYear() == m_dateValue.fullYear();
 399 }
 400
 401 void DateTimeEditBuilder::visitLiteral(const String& text)
 402 {
 403     DEFINE_STATIC_LOCAL(AtomicString, textPseudoId, ("-webkit-datetime-edit-text", AtomicString::ConstructFromLiteral));
 404     ASSERT(text.length());
 405     RefPtr<HTMLDivElement> element = HTMLDivElement::create(m_editElement.document());
 406     element->setPart(textPseudoId);
 407     if (m_parameters.locale.isRTL() && text.length()) {
 408         Direction dir = direction(text[0]);
 409         if (dir == SegmentSeparator || dir == WhiteSpaceNeutral || dir == OtherNeutral)
 410             element->appendChild(Text::create(m_editElement.document(), String(&rightToLeftMark, 1)));
 411     }
 412     element->appendChild(Text::create(m_editElement.document(), text));
 413     m_editElement.fieldsWrapperElement()->appendChild(element);
 414 }
 415
 416 DateTimeNumericFieldElement::Step DateTimeEditBuilder::createStep(double msPerFieldUnit, double msPerFieldSize) const
 417 {
 418     const Decimal msPerFieldUnitDecimal(static_cast<int>(msPerFieldUnit));
 419     const Decimal msPerFieldSizeDecimal(static_cast<int>(msPerFieldSize));
 420     Decimal stepMilliseconds = stepRange().step();
 421     ASSERT(!msPerFieldUnitDecimal.isZero());
 422     ASSERT(!msPerFieldSizeDecimal.isZero());
 423     ASSERT(!stepMilliseconds.isZero());
 424
 425     DateTimeNumericFieldElement::Step step(1, 0);
 426
 427     if (stepMilliseconds.remainder(msPerFieldSizeDecimal).isZero())
 428         stepMilliseconds = msPerFieldSizeDecimal;
 429
 430     if (msPerFieldSizeDecimal.remainder(stepMilliseconds).isZero() && stepMilliseconds.remainder(msPerFieldUnitDecimal).isZero()) {
 431         step.step = static_cast<int>((stepMilliseconds / msPerFieldUnitDecimal).toDouble());
 432         step.stepBase = static_cast<int>((stepRange().stepBase() / msPerFieldUnitDecimal).floor().remainder(msPerFieldSizeDecimal / msPerFieldUnitDecimal).toDouble());
 433     }
 434     return step;
 435 }
 436
 437 // ----------------------------
 438
 439 DateTimeEditElement::EditControlOwner::~EditControlOwner()
 440 {
 441 }
 442
 443 DateTimeEditElement::DateTimeEditElement(Document& document, EditControlOwner& editControlOwner)
 444     : HTMLDivElement(divTag, document)
 445     , m_editControlOwner(&editControlOwner)
 446 {
 447     setHasCustomStyleCallbacks();
 448 }
 449
 450 DateTimeEditElement::~DateTimeEditElement()
 451 {
 452     for (size_t fieldIndex = 0; fieldIndex < m_fields.size(); ++fieldIndex)
 453         m_fields[fieldIndex]->removeEventHandler();
 454 }
 455
 456 inline Element* DateTimeEditElement::fieldsWrapperElement() const
 457 {
 458     ASSERT(firstChild());
 459     return toElement(firstChild());
 460 }
 461
 462 void DateTimeEditElement::addField(PassRefPtr<DateTimeFieldElement> field)
 463 {
 464     if (m_fields.size() == m_fields.capacity())
 465         return;
 466     m_fields.append(field.get());
 467     fieldsWrapperElement()->appendChild(field);
 468 }
 469
 470 bool DateTimeEditElement::anyEditableFieldsHaveValues() const
 471 {
 472     for (size_t fieldIndex = 0; fieldIndex < m_fields.size(); ++fieldIndex) {
 473         if (!m_fields[fieldIndex]->isDisabled() && m_fields[fieldIndex]->hasValue())
 474             return true;
 475     }
 476     return false;
 477 }
 478
 479 void DateTimeEditElement::blurByOwner()
 480 {
 481     if (DateTimeFieldElement* field = focusedField())
 482         field->blur();
 483 }
 484
 485 PassRefPtr<DateTimeEditElement> DateTimeEditElement::create(Document& document, EditControlOwner& editControlOwner)
 486 {
 487     RefPtr<DateTimeEditElement> container = adoptRef(new DateTimeEditElement(document, editControlOwner));
 488     container->setPart(AtomicString("-webkit-datetime-edit", AtomicString::ConstructFromLiteral));
 489     container->setAttribute(idAttr, ShadowElementNames::dateTimeEdit());
 490     return container.release();
 491 }
 492
 493 PassRefPtr<RenderStyle> DateTimeEditElement::customStyleForRenderer()
 494 {
 495     // FIXME: This is a kind of layout. We might want to introduce new renderer.
 496     FontCachePurgePreventer fontCachePurgePreventer;
 497     RefPtr<RenderStyle> originalStyle = originalStyleForRenderer();
 498     RefPtr<RenderStyle> style = RenderStyle::clone(originalStyle.get());
 499     float width = 0;
 500     for (Node* child = fieldsWrapperElement()->firstChild(); child; child = child->nextSibling()) {
 501         if (!child->isElementNode())
 502             continue;
 503         Element* childElement = toElement(child);
 504         if (childElement->isDateTimeFieldElement()) {
 505             // We need to pass the Font of this element because child elements
 506             // can't resolve inherited style at this timing.
 507             width += static_cast<DateTimeFieldElement*>(childElement)->maximumWidth(style->font());
 508         } else {
 509             // ::-webkit-datetime-edit-text case. It has no
 510             // border/padding/margin in html.css.
 511             width += style->font().width(childElement->textContent());
 512         }
 513     }
 514     style->setWidth(Length(ceilf(width), Fixed));
 515     style->setUnique();
 516     return style.release();
 517 }
 518
 519 void DateTimeEditElement::didBlurFromField()
 520 {
 521     if (m_editControlOwner)
 522         m_editControlOwner->didBlurFromControl();
 523 }
 524
 525 void DateTimeEditElement::didFocusOnField()
 526 {
 527     if (m_editControlOwner)
 528         m_editControlOwner->didFocusOnControl();
 529 }
 530
 531 void DateTimeEditElement::disabledStateChanged()
 532 {
 533     updateUIState();
 534 }
 535
 536 DateTimeFieldElement* DateTimeEditElement::fieldAt(size_t fieldIndex) const
 537 {
 538     return fieldIndex < m_fields.size() ? m_fields[fieldIndex] : 0;
 539 }
 540
 541 size_t DateTimeEditElement::fieldIndexOf(const DateTimeFieldElement& field) const
 542 {
 543     for (size_t fieldIndex = 0; fieldIndex < m_fields.size(); ++fieldIndex) {
 544         if (m_fields[fieldIndex] == &field)
 545             return fieldIndex;
 546     }
 547     return invalidFieldIndex;
 548 }
 549
 550 void DateTimeEditElement::focusIfNoFocus()
 551 {
 552     if (focusedFieldIndex() != invalidFieldIndex)
 553         return;
 554     focusOnNextFocusableField(0);
 555 }
 556
 557 void DateTimeEditElement::focusByOwner(Element* oldFocusedElement)
 558 {
 559     if (oldFocusedElement && oldFocusedElement->isDateTimeFieldElement()) {
 560         DateTimeFieldElement* oldFocusedField = static_cast<DateTimeFieldElement*>(oldFocusedElement);
 561         size_t index = fieldIndexOf(*oldFocusedField);
 562         if (index != invalidFieldIndex && oldFocusedField->isFocusable()) {
 563             oldFocusedField->focus();
 564             return;
 565         }
 566     }
 567     focusOnNextFocusableField(0);
 568 }
 569
 570 DateTimeFieldElement* DateTimeEditElement::focusedField() const
 571 {
 572     return fieldAt(focusedFieldIndex());
 573 }
 574
 575 size_t DateTimeEditElement::focusedFieldIndex() const
 576 {
 577     Element* const focusedFieldElement = document().focusedElement();
 578     for (size_t fieldIndex = 0; fieldIndex < m_fields.size(); ++fieldIndex) {
 579         if (m_fields[fieldIndex] == focusedFieldElement)
 580             return fieldIndex;
 581     }
 582     return invalidFieldIndex;
 583 }
 584
 585 void DateTimeEditElement::fieldValueChanged()
 586 {
 587     if (m_editControlOwner)
 588         m_editControlOwner->editControlValueChanged();
 589 }
 590
 591 bool DateTimeEditElement::focusOnNextFocusableField(size_t startIndex)
 592 {
 593     for (size_t fieldIndex = startIndex; fieldIndex < m_fields.size(); ++fieldIndex) {
 594         if (m_fields[fieldIndex]->isFocusable()) {
 595             m_fields[fieldIndex]->focus();
 596             return true;
 597         }
 598     }
 599     return false;
 600 }
 601
 602 bool DateTimeEditElement::focusOnNextField(const DateTimeFieldElement& field)
 603 {
 604     const size_t startFieldIndex = fieldIndexOf(field);
 605     if (startFieldIndex == invalidFieldIndex)
 606         return false;
 607     return focusOnNextFocusableField(startFieldIndex + 1);
 608 }
 609
 610 bool DateTimeEditElement::focusOnPreviousField(const DateTimeFieldElement& field)
 611 {
 612     const size_t startFieldIndex = fieldIndexOf(field);
 613     if (startFieldIndex == invalidFieldIndex)
 614         return false;
 615     size_t fieldIndex = startFieldIndex;
 616     while (fieldIndex > 0) {
 617         --fieldIndex;
 618         if (m_fields[fieldIndex]->isFocusable()) {
 619             m_fields[fieldIndex]->focus();
 620             return true;
 621         }
 622     }
 623     return false;
 624 }
 625
 626 bool DateTimeEditElement::isDateTimeEditElement() const
 627 {
 628     return true;
 629 }
 630
 631 bool DateTimeEditElement::isDisabled() const
 632 {
 633     return m_editControlOwner && m_editControlOwner->isEditControlOwnerDisabled();
 634 }
 635
 636 bool DateTimeEditElement::isFieldOwnerDisabled() const
 637 {
 638     return isDisabled();
 639 }
 640
 641 bool DateTimeEditElement::isFieldOwnerReadOnly() const
 642 {
 643     return isReadOnly();
 644 }
 645
 646 bool DateTimeEditElement::isReadOnly() const
 647 {
 648     return m_editControlOwner && m_editControlOwner->isEditControlOwnerReadOnly();
 649 }
 650
 651 void DateTimeEditElement::layout(const LayoutParameters& layoutParameters, const DateComponents& dateValue)
 652 {
 653     DEFINE_STATIC_LOCAL(AtomicString, fieldsWrapperPseudoId, ("-webkit-datetime-edit-fields-wrapper", AtomicString::ConstructFromLiteral));
 654     if (!firstChild()) {
 655         RefPtr<HTMLDivElement> element = HTMLDivElement::create(document());
 656         element->setPart(fieldsWrapperPseudoId);
 657         appendChild(element.get());
 658     }
 659     Element* fieldsWrapper = fieldsWrapperElement();
 660
 661     size_t focusedFieldIndex = this->focusedFieldIndex();
 662     DateTimeFieldElement* const focusedField = fieldAt(focusedFieldIndex);
 663     const AtomicString focusedFieldId = focusedField ? focusedField->shadowPseudoId() : nullAtom;
 664
 665     DateTimeEditBuilder builder(*this, layoutParameters, dateValue);
 666     Node* lastChildToBeRemoved = fieldsWrapper->lastChild();
 667     if (!builder.build(layoutParameters.dateTimeFormat) || m_fields.isEmpty()) {
 668         lastChildToBeRemoved = fieldsWrapper->lastChild();
 669         builder.build(layoutParameters.fallbackDateTimeFormat);
 670     }
 671
 672     if (focusedFieldIndex != invalidFieldIndex) {
 673         for (size_t fieldIndex = 0; fieldIndex < m_fields.size(); ++fieldIndex) {
 674             if (m_fields[fieldIndex]->shadowPseudoId() == focusedFieldId) {
 675                 focusedFieldIndex = fieldIndex;
 676                 break;
 677             }
 678         }
 679         if (DateTimeFieldElement* field = fieldAt(std::min(focusedFieldIndex, m_fields.size() - 1)))
 680             field->focus();
 681     }
 682
 683     if (lastChildToBeRemoved) {
 684         for (Node* childNode = fieldsWrapper->firstChild(); childNode; childNode = fieldsWrapper->firstChild()) {
 685             fieldsWrapper->removeChild(childNode);
 686             if (childNode == lastChildToBeRemoved)
 687                 break;
 688         }
 689         setNeedsStyleRecalc();
 690     }
 691 }
 692
 693 AtomicString DateTimeEditElement::localeIdentifier() const
 694 {
 695     return m_editControlOwner ? m_editControlOwner->localeIdentifier() : nullAtom;
 696 }
 697
 698 void DateTimeEditElement::readOnlyStateChanged()
 699 {
 700     updateUIState();
 701 }
 702
 703 void DateTimeEditElement::resetFields()
 704 {
 705     for (size_t fieldIndex = 0; fieldIndex < m_fields.size(); ++fieldIndex)
 706         m_fields[fieldIndex]->removeEventHandler();
 707     m_fields.shrink(0);
 708 }
 709
 710 void DateTimeEditElement::defaultEventHandler(Event* event)
 711 {
 712     // In case of control owner forward event to control, e.g. DOM
 713     // dispatchEvent method.
 714     if (DateTimeFieldElement* field = focusedField()) {
 715         field->defaultEventHandler(event);
 716         if (event->defaultHandled())
 717             return;
 718     }
 719
 720     HTMLDivElement::defaultEventHandler(event);
 721 }
 722
 723 void DateTimeEditElement::setValueAsDate(const LayoutParameters& layoutParameters, const DateComponents& date)
 724 {
 725     layout(layoutParameters, date);
 726     for (size_t fieldIndex = 0; fieldIndex < m_fields.size(); ++fieldIndex)
 727         m_fields[fieldIndex]->setValueAsDate(date);
 728 }
 729
 730 void DateTimeEditElement::setValueAsDateTimeFieldsState(const DateTimeFieldsState& dateTimeFieldsState)
 731 {
 732     for (size_t fieldIndex = 0; fieldIndex < m_fields.size(); ++fieldIndex)
 733         m_fields[fieldIndex]->setValueAsDateTimeFieldsState(dateTimeFieldsState);
 734 }
 735
 736 void DateTimeEditElement::setEmptyValue(const LayoutParameters& layoutParameters, const DateComponents& dateForReadOnlyField)
 737 {
 738     layout(layoutParameters, dateForReadOnlyField);
 739     for (size_t fieldIndex = 0; fieldIndex < m_fields.size(); ++fieldIndex)
 740         m_fields[fieldIndex]->setEmptyValue(DateTimeFieldElement::DispatchNoEvent);
 741 }
 742
 743 bool DateTimeEditElement::hasFocusedField()
 744 {
 745     return focusedFieldIndex() != invalidFieldIndex;
 746 }
 747
 748 void DateTimeEditElement::setOnlyYearMonthDay(const DateComponents& date)
 749 {
 750     ASSERT(date.type() == DateComponents::Date);
 751
 752     if (!m_editControlOwner)
 753         return;
 754
 755     DateTimeFieldsState dateTimeFieldsState = valueAsDateTimeFieldsState();
 756     dateTimeFieldsState.setYear(date.fullYear());
 757     dateTimeFieldsState.setMonth(date.month() + 1);
 758     dateTimeFieldsState.setDayOfMonth(date.monthDay());
 759     setValueAsDateTimeFieldsState(dateTimeFieldsState);
 760     m_editControlOwner->editControlValueChanged();
 761 }
 762
 763 void DateTimeEditElement::stepDown()
 764 {
 765     if (DateTimeFieldElement* const field = focusedField())
 766         field->stepDown();
 767 }
 768
 769 void DateTimeEditElement::stepUp()
 770 {
 771     if (DateTimeFieldElement* const field = focusedField())
 772         field->stepUp();
 773 }
 774
 775 void DateTimeEditElement::updateUIState()
 776 {
 777     if (isDisabled()) {
 778         if (DateTimeFieldElement* field = focusedField())
 779             field->blur();
 780     }
 781 }
 782
 783 String DateTimeEditElement::value() const
 784 {
 785     if (!m_editControlOwner)
 786         return emptyString();
 787     return m_editControlOwner->formatDateTimeFieldsState(valueAsDateTimeFieldsState());
 788 }
 789
 790 DateTimeFieldsState DateTimeEditElement::valueAsDateTimeFieldsState() const
 791 {
 792     DateTimeFieldsState dateTimeFieldsState;
 793     for (size_t fieldIndex = 0; fieldIndex < m_fields.size(); ++fieldIndex)
 794         m_fields[fieldIndex]->populateDateTimeFieldsState(dateTimeFieldsState);
 795     return dateTimeFieldsState;
 796 }
 797
 798 } // namespace WebCore
 799
 800 #endif