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| 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 "core/html/shadow/DateTimeNumericFieldElement.h" | |
| 27 | |
| 28 #include "core/CSSPropertyNames.h" | |
| 29 #include "core/CSSValueKeywords.h" | |
| 30 #include "core/events/KeyboardEvent.h" | |
| 31 #include "platform/fonts/Font.h" | |
| 32 #include "platform/text/PlatformLocale.h" | |
| 33 #include "platform/text/TextRun.h" | |
| 34 | |
| 35 namespace blink { | |
| 36 | |
| 37 int DateTimeNumericFieldElement::Range::ClampValue(int value) const { | |
| 38 return std::min(std::max(value, minimum), maximum); | |
| 39 } | |
| 40 | |
| 41 bool DateTimeNumericFieldElement::Range::IsInRange(int value) const { | |
| 42 return value >= minimum && value <= maximum; | |
| 43 } | |
| 44 | |
| 45 // ---------------------------- | |
| 46 | |
| 47 DateTimeNumericFieldElement::DateTimeNumericFieldElement( | |
| 48 Document& document, | |
| 49 FieldOwner& field_owner, | |
| 50 const Range& range, | |
| 51 const Range& hard_limits, | |
| 52 const String& placeholder, | |
| 53 const DateTimeNumericFieldElement::Step& step) | |
| 54 : DateTimeFieldElement(document, field_owner), | |
| 55 placeholder_(placeholder), | |
| 56 range_(range), | |
| 57 hard_limits_(hard_limits), | |
| 58 step_(step), | |
| 59 value_(0), | |
| 60 has_value_(false) { | |
| 61 DCHECK_NE(step_.step, 0); | |
| 62 DCHECK_LE(range_.minimum, range_.maximum); | |
| 63 DCHECK_LE(hard_limits_.minimum, hard_limits_.maximum); | |
| 64 | |
| 65 // We show a direction-neutral string such as "--" as a placeholder. It | |
| 66 // should follow the direction of numeric values. | |
| 67 if (LocaleForOwner().IsRTL()) { | |
| 68 WTF::Unicode::CharDirection dir = | |
| 69 WTF::Unicode::Direction(FormatValue(this->Maximum())[0]); | |
| 70 if (dir == WTF::Unicode::kLeftToRight || | |
| 71 dir == WTF::Unicode::kEuropeanNumber || | |
| 72 dir == WTF::Unicode::kArabicNumber) { | |
| 73 SetInlineStyleProperty(CSSPropertyUnicodeBidi, CSSValueBidiOverride); | |
| 74 SetInlineStyleProperty(CSSPropertyDirection, CSSValueLtr); | |
| 75 } | |
| 76 } | |
| 77 } | |
| 78 | |
| 79 float DateTimeNumericFieldElement::MaximumWidth(const ComputedStyle& style) { | |
| 80 float maximum_width = ComputeTextWidth(style, placeholder_); | |
| 81 maximum_width = | |
| 82 std::max(maximum_width, ComputeTextWidth(style, FormatValue(Maximum()))); | |
| 83 maximum_width = std::max(maximum_width, ComputeTextWidth(style, Value())); | |
| 84 return maximum_width + DateTimeFieldElement::MaximumWidth(style); | |
| 85 } | |
| 86 | |
| 87 int DateTimeNumericFieldElement::DefaultValueForStepDown() const { | |
| 88 return range_.maximum; | |
| 89 } | |
| 90 | |
| 91 int DateTimeNumericFieldElement::DefaultValueForStepUp() const { | |
| 92 return range_.minimum; | |
| 93 } | |
| 94 | |
| 95 void DateTimeNumericFieldElement::SetFocused(bool value, | |
| 96 WebFocusType focus_type) { | |
| 97 if (!value) { | |
| 98 int value = TypeAheadValue(); | |
| 99 type_ahead_buffer_.Clear(); | |
| 100 if (value >= 0) | |
| 101 SetValueAsInteger(value, kDispatchEvent); | |
| 102 } | |
| 103 DateTimeFieldElement::SetFocused(value, focus_type); | |
| 104 } | |
| 105 | |
| 106 String DateTimeNumericFieldElement::FormatValue(int value) const { | |
| 107 Locale& locale = LocaleForOwner(); | |
| 108 if (hard_limits_.maximum > 999) | |
| 109 return locale.ConvertToLocalizedNumber(String::Format("%04d", value)); | |
| 110 if (hard_limits_.maximum > 99) | |
| 111 return locale.ConvertToLocalizedNumber(String::Format("%03d", value)); | |
| 112 return locale.ConvertToLocalizedNumber(String::Format("%02d", value)); | |
| 113 } | |
| 114 | |
| 115 void DateTimeNumericFieldElement::HandleKeyboardEvent( | |
| 116 KeyboardEvent* keyboard_event) { | |
| 117 DCHECK(!IsDisabled()); | |
| 118 if (keyboard_event->type() != EventTypeNames::keypress) | |
| 119 return; | |
| 120 | |
| 121 UChar char_code = static_cast<UChar>(keyboard_event->charCode()); | |
| 122 String number = | |
| 123 LocaleForOwner().ConvertFromLocalizedNumber(String(&char_code, 1)); | |
| 124 const int digit = number[0] - '0'; | |
| 125 if (digit < 0 || digit > 9) | |
| 126 return; | |
| 127 | |
| 128 unsigned maximum_length = | |
| 129 DateTimeNumericFieldElement::FormatValue(range_.maximum).length(); | |
| 130 if (type_ahead_buffer_.length() >= maximum_length) { | |
| 131 String current = type_ahead_buffer_.ToString(); | |
| 132 type_ahead_buffer_.Clear(); | |
| 133 unsigned desired_length = maximum_length - 1; | |
| 134 type_ahead_buffer_.Append(current, current.length() - desired_length, | |
| 135 desired_length); | |
| 136 } | |
| 137 type_ahead_buffer_.Append(number); | |
| 138 int new_value = TypeAheadValue(); | |
| 139 if (new_value >= hard_limits_.minimum) { | |
| 140 SetValueAsInteger(new_value, kDispatchEvent); | |
| 141 } else { | |
| 142 has_value_ = false; | |
| 143 UpdateVisibleValue(kDispatchEvent); | |
| 144 } | |
| 145 | |
| 146 if (type_ahead_buffer_.length() >= maximum_length || | |
| 147 new_value * 10 > range_.maximum) | |
| 148 FocusOnNextField(); | |
| 149 | |
| 150 keyboard_event->SetDefaultHandled(); | |
| 151 } | |
| 152 | |
| 153 bool DateTimeNumericFieldElement::HasValue() const { | |
| 154 return has_value_; | |
| 155 } | |
| 156 | |
| 157 void DateTimeNumericFieldElement::Initialize(const AtomicString& pseudo, | |
| 158 const String& ax_help_text) { | |
| 159 DateTimeFieldElement::Initialize(pseudo, ax_help_text, range_.minimum, | |
| 160 range_.maximum); | |
| 161 } | |
| 162 | |
| 163 int DateTimeNumericFieldElement::Maximum() const { | |
| 164 return range_.maximum; | |
| 165 } | |
| 166 | |
| 167 void DateTimeNumericFieldElement::SetEmptyValue(EventBehavior event_behavior) { | |
| 168 if (IsDisabled()) | |
| 169 return; | |
| 170 | |
| 171 has_value_ = false; | |
| 172 value_ = 0; | |
| 173 type_ahead_buffer_.Clear(); | |
| 174 UpdateVisibleValue(event_behavior); | |
| 175 } | |
| 176 | |
| 177 void DateTimeNumericFieldElement::SetValueAsInteger( | |
| 178 int value, | |
| 179 EventBehavior event_behavior) { | |
| 180 value_ = hard_limits_.ClampValue(value); | |
| 181 has_value_ = true; | |
| 182 UpdateVisibleValue(event_behavior); | |
| 183 } | |
| 184 | |
| 185 void DateTimeNumericFieldElement::StepDown() { | |
| 186 int new_value = | |
| 187 RoundDown(has_value_ ? value_ - 1 : DefaultValueForStepDown()); | |
| 188 if (!range_.IsInRange(new_value)) | |
| 189 new_value = RoundDown(range_.maximum); | |
| 190 type_ahead_buffer_.Clear(); | |
| 191 SetValueAsInteger(new_value, kDispatchEvent); | |
| 192 } | |
| 193 | |
| 194 void DateTimeNumericFieldElement::StepUp() { | |
| 195 int new_value = RoundUp(has_value_ ? value_ + 1 : DefaultValueForStepUp()); | |
| 196 if (!range_.IsInRange(new_value)) | |
| 197 new_value = RoundUp(range_.minimum); | |
| 198 type_ahead_buffer_.Clear(); | |
| 199 SetValueAsInteger(new_value, kDispatchEvent); | |
| 200 } | |
| 201 | |
| 202 String DateTimeNumericFieldElement::Value() const { | |
| 203 return has_value_ ? FormatValue(value_) : g_empty_string; | |
| 204 } | |
| 205 | |
| 206 int DateTimeNumericFieldElement::ValueAsInteger() const { | |
| 207 return has_value_ ? value_ : -1; | |
| 208 } | |
| 209 | |
| 210 int DateTimeNumericFieldElement::TypeAheadValue() const { | |
| 211 if (type_ahead_buffer_.length()) | |
| 212 return type_ahead_buffer_.ToString().ToInt(); | |
| 213 return -1; | |
| 214 } | |
| 215 | |
| 216 String DateTimeNumericFieldElement::VisibleValue() const { | |
| 217 if (type_ahead_buffer_.length()) | |
| 218 return FormatValue(TypeAheadValue()); | |
| 219 return has_value_ ? Value() : placeholder_; | |
| 220 } | |
| 221 | |
| 222 int DateTimeNumericFieldElement::RoundDown(int n) const { | |
| 223 n -= step_.step_base; | |
| 224 if (n >= 0) | |
| 225 n = n / step_.step * step_.step; | |
| 226 else | |
| 227 n = -((-n + step_.step - 1) / step_.step * step_.step); | |
| 228 return n + step_.step_base; | |
| 229 } | |
| 230 | |
| 231 int DateTimeNumericFieldElement::RoundUp(int n) const { | |
| 232 n -= step_.step_base; | |
| 233 if (n >= 0) | |
| 234 n = (n + step_.step - 1) / step_.step * step_.step; | |
| 235 else | |
| 236 n = -(-n / step_.step * step_.step); | |
| 237 return n + step_.step_base; | |
| 238 } | |
| 239 | |
| 240 } // namespace blink | |
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Chromium Code Reviews
Issue 2815263002:
Move form-related files in core/html/shadow to core/html/forms. (Closed)
