| /* |
| * CSS Media Query |
| * |
| * Copyright (C) 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>. |
| * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_CSS_MEDIA_QUERY_EXP_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_CORE_CSS_MEDIA_QUERY_EXP_H_ |
| |
| #include "third_party/blink/renderer/core/core_export.h" |
| #include "third_party/blink/renderer/core/css/css_primitive_value.h" |
| #include "third_party/blink/renderer/core/css/css_value.h" |
| #include "third_party/blink/renderer/core/css/media_feature_names.h" |
| #include "third_party/blink/renderer/core/css_value_keywords.h" |
| #include "third_party/blink/renderer/platform/wtf/allocator.h" |
| |
| namespace blink { |
| |
| class CSSParserTokenRange; |
| |
| struct MediaQueryExpValue { |
| DISALLOW_NEW(); |
| CSSValueID id; |
| double value; |
| CSSPrimitiveValue::UnitType unit; |
| unsigned numerator; |
| unsigned denominator; |
| |
| bool is_id; |
| bool is_value; |
| bool is_ratio; |
| |
| MediaQueryExpValue() |
| : id(CSSValueID::kInvalid), |
| value(0), |
| unit(CSSPrimitiveValue::UnitType::kUnknown), |
| numerator(0), |
| denominator(1), |
| is_id(false), |
| is_value(false), |
| is_ratio(false) {} |
| |
| bool IsValid() const { return (is_id || is_value || is_ratio); } |
| String CssText() const; |
| bool Equals(const MediaQueryExpValue& exp_value) const { |
| if (is_id) |
| return (id == exp_value.id); |
| if (is_value) |
| return (value == exp_value.value); |
| if (is_ratio) |
| return (numerator == exp_value.numerator && |
| denominator == exp_value.denominator); |
| return !exp_value.IsValid(); |
| } |
| }; |
| |
| class CORE_EXPORT MediaQueryExp { |
| DISALLOW_NEW(); |
| |
| public: |
| // Returns an invalid MediaQueryExp if the arguments are invalid. |
| static MediaQueryExp Create(const String& media_feature, |
| CSSParserTokenRange&); |
| static MediaQueryExp Invalid() { |
| return MediaQueryExp(String(), MediaQueryExpValue()); |
| } |
| |
| MediaQueryExp(const MediaQueryExp& other); |
| ~MediaQueryExp(); |
| |
| const String& MediaFeature() const { return media_feature_; } |
| |
| MediaQueryExpValue ExpValue() const { return exp_value_; } |
| |
| bool IsValid() const { return !media_feature_.IsNull(); } |
| |
| bool operator==(const MediaQueryExp& other) const; |
| |
| bool IsViewportDependent() const; |
| |
| bool IsDeviceDependent() const; |
| |
| String Serialize() const; |
| |
| private: |
| MediaQueryExp(const String&, const MediaQueryExpValue&); |
| |
| String media_feature_; |
| MediaQueryExpValue exp_value_; |
| }; |
| |
| } // namespace blink |
| |
| #endif |