| // Copyright 2014 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef COBALT_CSSOM_KEYWORD_VALUE_H_ |
| #define COBALT_CSSOM_KEYWORD_VALUE_H_ |
| |
| #include <string> |
| |
| #include "base/basictypes.h" |
| #include "base/compiler_specific.h" |
| #include "base/memory/ref_counted.h" |
| #include "cobalt/base/polymorphic_equatable.h" |
| #include "cobalt/cssom/property_value.h" |
| |
| namespace cobalt { |
| namespace cssom { |
| |
| class KeywordValue : public PropertyValue { |
| public: |
| enum Value { |
| // "absolute" is a value of "position" property which indicates that values |
| // of "top", "right", "bottom", and "left" properties specify offsets |
| // with respect to the box's containing block. |
| // https://www.w3.org/TR/CSS21/visuren.html#choose-position |
| kAbsolute, |
| |
| // "alternate" is a possible value of the "animation-direction" property. |
| // https://www.w3.org/TR/2013/WD-css3-animations-20130219/#animation-direction-property |
| kAlternate, |
| |
| // "alternate-reverse" is a possible value of the "animation-direction" |
| // property. |
| // https://www.w3.org/TR/2013/WD-css3-animations-20130219/#animation-direction-property |
| kAlternateReverse, |
| |
| // "auto" is a value of "width" and "height" properties which indicates |
| // that used value of these properties depends on the values of other |
| // properties. |
| // https://www.w3.org/TR/CSS21/visudet.html#the-width-property |
| // https://www.w3.org/TR/CSS21/visudet.html#the-height-property |
| kAuto, |
| |
| // "backwards" is a value of "animation-fill-mode" property which causes the |
| // animation results to fill in backwards around the animation's active |
| // duration. |
| // https://www.w3.org/TR/css3-animations/#animation-fill-mode-property |
| kBackwards, |
| |
| // "middle" is the default value of "vertical-align" property that indicates |
| // that the content should be aligned at the baselines. |
| // https://www.w3.org/TR/CSS21/visudet.html#propdef-vertical-align |
| kBaseline, |
| |
| // "block" is a value of "display" property which causes an element |
| // to generate a block box. |
| // https://www.w3.org/TR/CSS21/visuren.html#display-prop |
| kBlock, |
| |
| // "both" is a value of "animation-fill-mode" property which causes the |
| // animation results to fill in forwards and backwards around the |
| // animation's active duration. |
| // https://www.w3.org/TR/css3-animations/#animation-fill-mode-property |
| kBoth, |
| |
| // "bottom" is a value of "background-position" property that computes to |
| // 100% for the vertical position if one or two values are given, otherwise |
| // specifies the bottom edge as the origin for the next offset. |
| // https://www.w3.org/TR/css3-background/#the-background-position |
| kBottom, |
| |
| // "break-word" is a value of "overflow-wrap" property which specifies to |
| // the user agent that an unbreakable word may be broken at an arbitrary |
| // point if there are no otherwise-acceptable break points in the line. |
| // https://www.w3.org/TR/css-text-3/#overflow-wrap-property |
| kBreakWord, |
| |
| // "center" is a value of "text-align" property that indicates that the |
| // content should be aligned horizontally centered. |
| // https://www.w3.org/TR/css-text-3/#text-align |
| kCenter, |
| |
| // "clip" is a value of "text-overflow" property which specifies clipping |
| // content that overflows its block container element. Characters may be |
| // only partially rendered. |
| // https://www.w3.org/TR/css3-ui/#propdef-text-overflow |
| kClip, |
| |
| // "contain" is a value of "background-size" property which scales the |
| // image to the largest size such that both its width and its height can |
| // completely cover the background positioning area. |
| // https://www.w3.org/TR/css3-background/#the-background-size |
| kContain, |
| |
| // "cover" is a value of "background-size" property which scales the image |
| // to the smallest size such that both its width and its height can fit |
| // inside the background positioning area. |
| // https://www.w3.org/TR/css3-background/#the-background-size |
| kCover, |
| |
| // "currentColor" is the initial value of "border-color" property. |
| // CSS3 extends the color value to include the 'currentColor' keyword |
| // to allow its use with all properties that accept a <color> value. |
| // https://www.w3.org/TR/css3-color/#currentcolor |
| kCurrentColor, |
| |
| // "cursive" is a value of "font_family" property which indicates a generic |
| // font family using a more informal script style. |
| // https://www.w3.org/TR/css3-fonts/#generic-font-families |
| kCursive, |
| |
| // "ellipsis" is a value of "text-overflow" property which specifies |
| // rendering an ellipsis to represent clipped inline content. |
| // https://www.w3.org/TR/css3-ui/#propdef-text-overflow |
| kEllipsis, |
| |
| // "end" is a value of "text-align" property that indicates that content |
| // is aligned at the end edge of the line box. |
| // https://www.w3.org/TR/css-text-3/#text-align |
| kEnd, |
| |
| // "equirectangular" is a value of a parameter of the "map-to-mesh" |
| // filter function which indicates that the built-in equirectangular mesh |
| // should be used. |
| kEquirectangular, |
| |
| // "fantasy" is a value of "font_family" property which indicates a generic |
| // font family using decorative or expressive representations of characters. |
| // https://www.w3.org/TR/css3-fonts/#generic-font-families |
| kFantasy, |
| |
| // "fixed" is a value of the "position" property which indicates that |
| // the element is positioned and the element's containing block should be |
| // set to the viewport. |
| // https://www.w3.org/TR/CSS21/visuren.html#choose-position |
| kFixed, |
| |
| // "forwards" is a value of "animation-fill-mode" property which causes the |
| // animation results to fill in forwards around the animation's active |
| // duration. |
| // https://www.w3.org/TR/css3-animations/#animation-fill-mode-property |
| kForwards, |
| |
| // "hidden" is a value of "overflow" property which indicates that |
| // the content is clipped. |
| // https://www.w3.org/TR/CSS21/visufx.html#overflow |
| // "hidden" is a value of "visibility" property which indicates that |
| // the generated box is invisible. |
| // https://www.w3.org/TR/CSS21/visufx.html#propdef-visibility |
| kHidden, |
| |
| // "infinite" is a value of "animation-iteration-count" property which |
| // causes the animation to loop forever. |
| // https://www.w3.org/TR/css3-animations/#animation-iteration-count-property |
| kInfinite, |
| |
| // Applicable to any property, represents a cascaded value of "inherit", |
| // which means that, for a given element, the property takes the same |
| // specified value as the property for the element's parent. |
| // https://www.w3.org/TR/CSS21/cascade.html#value-def-inherit |
| kInherit, |
| |
| // Applicable to any property, the "initial" keyword represents |
| // the specified value that is designated as the property's initial value. |
| // https://www.w3.org/TR/css3-values/#common-keywords |
| kInitial, |
| |
| // "inline" is a value of "display" property which causes an element |
| // to generate one or more inline boxes. |
| // https://www.w3.org/TR/CSS21/visuren.html#display-prop |
| kInline, |
| |
| // "inline-block" is a value of "display" property which causes an element |
| // to generate an inline-level block container. |
| // https://www.w3.org/TR/CSS21/visuren.html#display-prop |
| kInlineBlock, |
| |
| // "left" is a value of "text-align" property that indicates that the |
| // content should be aligned horizontally to the left. |
| // https://www.w3.org/TR/css-text-3/#text-align |
| kLeft, |
| |
| // "line-through" is a value of "text-decoration-line" property that |
| // indicates that the line of text has a line through the middle. |
| kLineThrough, |
| |
| // "middle" is a value of "vertical-align" property that indicates that the |
| // content should be aligned vertically centered. |
| // https://www.w3.org/TR/CSS21/visudet.html#propdef-vertical-align |
| kMiddle, |
| |
| // "monospace" is a value of "font_family" property which indicates a |
| // generic |
| // font family using glyphs with the same fixed width. |
| // https://www.w3.org/TR/css3-fonts/#generic-font-families |
| kMonospace, |
| |
| // "monoscopic" is a value of the "cobalt-mtm" property which indicates |
| // that the mesh should only be rendered through one eye. |
| kMonoscopic, |
| |
| // "none" is a value of "transform" property which means that HTML element |
| // is rendered as is. |
| // https://www.w3.org/TR/css3-transforms/#transform-property |
| kNone, |
| |
| // "no-repeat" is a value of "background-repeat" property which means that |
| // image is not repeated in a specific direction. |
| // https://www.w3.org/TR/css3-background/#background-repeat |
| kNoRepeat, |
| |
| // "normal" is a value of "line-height" property which tells user agents |
| // to set the used value to a "reasonable" value based on the font |
| // of the element. |
| // https://www.w3.org/TR/CSS21/visudet.html#line-height |
| kNormal, |
| |
| // "nowrap" is a value of "white-space" property which tells user agents |
| // that white space should be collapsed as for "normal" but line breaks |
| // should be suppressed within text. |
| // https://www.w3.org/TR/css3-text/#white-space-property |
| kNoWrap, |
| |
| // "pre" is a value of "white-space" property which tells user agents that |
| // white space inside the element should not be collapsed and lines should |
| // only be broken at preserved newline characters. |
| // https://www.w3.org/TR/css3-text/#white-space-property |
| kPre, |
| |
| // "pre-line" is a value of "white-space" property which tells user agents |
| // that white space inside the element should be collapsed and lines should |
| // be broken at preserved newline characters and as necessary to fill line |
| // boxes, meaning that wrapping is allowed. |
| // https://www.w3.org/TR/css3-text/#white-space-property |
| kPreLine, |
| |
| // "pre-wrap" is a value of "white-space" property which tells user agents |
| // that white space inside the element should not be collapsed and lines |
| // should be broken at preserved newline characters and as necessary to fill |
| // line boxes, meaning that wrapping is allowed. |
| // https://www.w3.org/TR/css3-text/#white-space-property |
| kPreWrap, |
| |
| // "relative" is a value of "position" property which indicates that values |
| // of "top", "right", "bottom", and "left" properties specify offsets |
| // with respect to the box's in-flow position. |
| // https://www.w3.org/TR/CSS21/visuren.html#choose-position |
| kRelative, |
| |
| // "repeat" is a value of "background-repeat" property which means that |
| // image is repeated in a specific direction. |
| // https://www.w3.org/TR/css3-background/#background-repeat |
| kRepeat, |
| |
| // "reverse" is a possible value of the "animation-direction" property. |
| // https://www.w3.org/TR/2013/WD-css3-animations-20130219/#animation-direction-property |
| kReverse, |
| |
| // "right" is a value of "text-align" property that indicates that the |
| // content should be aligned horizontally to the right. |
| // https://www.w3.org/TR/css-text-3/#text-align |
| kRight, |
| |
| // "sans-serif" is a value of "font_family" property which indicates a |
| // generic font family using glyphs with low contrast and plain stroke |
| // endings (without flaring, cross stroke or other ornamentation). |
| // https://www.w3.org/TR/css3-fonts/#generic-font-families |
| kSansSerif, |
| |
| // "serif" is a value of "font_family" property which indicates a generic |
| // font family representing the formal text style for script. |
| // https://www.w3.org/TR/css3-fonts/#generic-font-families |
| kSerif, |
| |
| // "solid" is a value of "border-style" property which indicates a single |
| // line segment. |
| // https://www.w3.org/TR/css3-background/#border-style |
| kSolid, |
| |
| // "start" is a value of "text-align" property that indicates that content |
| // is aligned at the start edge of the line box. This is the initial |
| // value for "text-align" |
| // https://www.w3.org/TR/css-text-3/#text-align |
| kStart, |
| |
| // "static" is a value of "position" property which indicates that a box |
| // is laid out according to the normal flow. |
| // https://www.w3.org/TR/CSS21/visuren.html#choose-position |
| kStatic, |
| |
| // "stereoscopic-left-right" is a value of the "cobalt-mtm" property which |
| // indicates that the mesh should be rendered in two views |
| // side-by-side. |
| kStereoscopicLeftRight, |
| |
| // "stereoscopic-top-bottom" is a value of the "cobalt-mtm" property which |
| // indicates that the mesh should be rendered in two views above and below. |
| kStereoscopicTopBottom, |
| |
| // "top" is a value of "vertical-align" property that indicates that the |
| // content should be aligned vertically at the top. |
| // https://www.w3.org/TR/CSS21/visudet.html#propdef-vertical-align |
| kTop, |
| |
| // "uppercase" is a value of "text_transform" property that indicates that |
| // all characters in each word of the element's text should be put in |
| // uppercase. |
| // https://www.w3.org/TR/css3-text/#text-transform-property |
| kUppercase, |
| |
| // "visible" is a value of "overflow" property which indicates that |
| // the content is not clipped. |
| // https://www.w3.org/TR/CSS21/visufx.html#overflow |
| // "visible" is a value of "visibility" property which indicates that |
| // the generated box is visible. |
| // https://www.w3.org/TR/CSS21/visufx.html#propdef-visibility |
| kVisible, |
| }; |
| |
| // Since keyword values do not hold additional information and some of them |
| // (namely "inherit" and "initial") are used extensively, for the sake of |
| // saving memory an explicit instantiation of this class is disallowed. |
| // Use factory methods below to obtain shared instances. |
| static const scoped_refptr<KeywordValue>& GetAbsolute(); |
| static const scoped_refptr<KeywordValue>& GetAlternate(); |
| static const scoped_refptr<KeywordValue>& GetAlternateReverse(); |
| static const scoped_refptr<KeywordValue>& GetAuto(); |
| static const scoped_refptr<KeywordValue>& GetBackwards(); |
| static const scoped_refptr<KeywordValue>& GetBaseline(); |
| static const scoped_refptr<KeywordValue>& GetBlock(); |
| static const scoped_refptr<KeywordValue>& GetBoth(); |
| static const scoped_refptr<KeywordValue>& GetBottom(); |
| static const scoped_refptr<KeywordValue>& GetBreakWord(); |
| static const scoped_refptr<KeywordValue>& GetCenter(); |
| static const scoped_refptr<KeywordValue>& GetClip(); |
| static const scoped_refptr<KeywordValue>& GetContain(); |
| static const scoped_refptr<KeywordValue>& GetCover(); |
| static const scoped_refptr<KeywordValue>& GetCurrentColor(); |
| static const scoped_refptr<KeywordValue>& GetCursive(); |
| static const scoped_refptr<KeywordValue>& GetEllipsis(); |
| static const scoped_refptr<KeywordValue>& GetEnd(); |
| static const scoped_refptr<KeywordValue>& GetEquirectangular(); |
| static const scoped_refptr<KeywordValue>& GetFantasy(); |
| static const scoped_refptr<KeywordValue>& GetForwards(); |
| static const scoped_refptr<KeywordValue>& GetFixed(); |
| static const scoped_refptr<KeywordValue>& GetHidden(); |
| static const scoped_refptr<KeywordValue>& GetInfinite(); |
| static const scoped_refptr<KeywordValue>& GetInherit(); |
| static const scoped_refptr<KeywordValue>& GetInitial(); |
| static const scoped_refptr<KeywordValue>& GetInline(); |
| static const scoped_refptr<KeywordValue>& GetInlineBlock(); |
| static const scoped_refptr<KeywordValue>& GetLeft(); |
| static const scoped_refptr<KeywordValue>& GetLineThrough(); |
| static const scoped_refptr<KeywordValue>& GetMiddle(); |
| static const scoped_refptr<KeywordValue>& GetMonoscopic(); |
| static const scoped_refptr<KeywordValue>& GetMonospace(); |
| static const scoped_refptr<KeywordValue>& GetNone(); |
| static const scoped_refptr<KeywordValue>& GetNoRepeat(); |
| static const scoped_refptr<KeywordValue>& GetNormal(); |
| static const scoped_refptr<KeywordValue>& GetNoWrap(); |
| static const scoped_refptr<KeywordValue>& GetPre(); |
| static const scoped_refptr<KeywordValue>& GetPreLine(); |
| static const scoped_refptr<KeywordValue>& GetPreWrap(); |
| static const scoped_refptr<KeywordValue>& GetRelative(); |
| static const scoped_refptr<KeywordValue>& GetRepeat(); |
| static const scoped_refptr<KeywordValue>& GetReverse(); |
| static const scoped_refptr<KeywordValue>& GetRight(); |
| static const scoped_refptr<KeywordValue>& GetSansSerif(); |
| static const scoped_refptr<KeywordValue>& GetSerif(); |
| static const scoped_refptr<KeywordValue>& GetSolid(); |
| static const scoped_refptr<KeywordValue>& GetStart(); |
| static const scoped_refptr<KeywordValue>& GetStatic(); |
| static const scoped_refptr<KeywordValue>& GetStereoscopicLeftRight(); |
| static const scoped_refptr<KeywordValue>& GetStereoscopicTopBottom(); |
| static const scoped_refptr<KeywordValue>& GetTop(); |
| static const scoped_refptr<KeywordValue>& GetUppercase(); |
| static const scoped_refptr<KeywordValue>& GetVisible(); |
| |
| void Accept(PropertyValueVisitor* visitor) OVERRIDE; |
| |
| Value value() const { return value_; } |
| |
| std::string ToString() const OVERRIDE; |
| |
| bool operator==(const KeywordValue& other) const { |
| return value_ == other.value_; |
| } |
| |
| DEFINE_POLYMORPHIC_EQUATABLE_TYPE(KeywordValue); |
| |
| // Implementation detail, has to be public in order to be constructible. |
| struct NonTrivialStaticFields; |
| |
| private: |
| explicit KeywordValue(Value value) : value_(value) {} |
| ~KeywordValue() OVERRIDE {} |
| |
| const Value value_; |
| |
| DISALLOW_COPY_AND_ASSIGN(KeywordValue); |
| }; |
| |
| } // namespace cssom |
| } // namespace cobalt |
| |
| #endif // COBALT_CSSOM_KEYWORD_VALUE_H_ |
