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org.apache.royale.compiler.css.package.html Maven / Gradle / Ivy

This package contains interfaces and classes representing various CSS concepts.


An ICSSDocument represents all the CSS code in a
.css file or within a <Style> tag in MXML.
It is the root of a tree of objects of type ICSSNode.



For example, CSS such as as
Button { color: red; font-size: 12 }

is represented by an ICSSRule which has one simple
ICSSSelector named "Button" and two
ICSSProperty objects named "color"
and "font-size".
Each ICSSProperty has an ICSSPropertyValue;
in this case they represent the two values red
and 12.



A rule can have a list of selectors, each of which can be a complex combination
of simple selectors; they are  stored in a linked-list-like data structure,
where an ICSSCombinator in the link between between selectors.



Unlike AS and MXML source files, a CSS source file doesn't create a compilation
unit in a project. There are three reasons for this:

The dependency discovery loop for compilation units
doesn't work for CSS.
CSS syntax trees are not used by other sub-systems.
The output of CSS is different than other compilation units' output.
A CSS file does not contribute to a SWF tag of its own,
and all of its content does not get generated into ABC code.