Package com.google.common.css.compiler.passes

Class BiDiFlipper

java.lang.Object

com.google.common.css.compiler.ast.DefaultTreeVisitor

com.google.common.css.compiler.passes.BiDiFlipper

All Implemented Interfaces:

AtRuleHandler, CssCompilerPass, CssTreeVisitor

public class BiDiFlipper
extends DefaultTreeVisitor
implements CssCompilerPass

Compiler pass that BiDi flips all the flippable nodes. TODO(user): Need to add a function to return tree before flipping.

Field Summary

Fields

Modifier and Type	Field	Description
static com.google.common.collect.ImmutableSet<java.lang.String>	BORDER_RADIUS_PROPERTIES
static com.google.common.collect.ImmutableSet<java.lang.String>	FOUR_PART_PROPERTIES_THAT_SHOULD_FLIP	Set of properties whose property values may flip if they match the four-part pattern.
static java.lang.String	RIGHT

Constructor Summary

Constructors

Constructor	Description
BiDiFlipper(MutatingVisitController visitController, boolean swapLtrRtlInUrl, boolean swapLeftRightInUrl)
BiDiFlipper(MutatingVisitController visitController, boolean swapLtrRtlInUrl, boolean swapLeftRightInUrl, boolean shouldFlipConstantReferences)

Method Summary

Modifier and Type	Method	Description
boolean	enterDeclaration(CssDeclarationNode declarationNode)	Called before visiting a CssDeclarationNode's sub trees
static java.lang.String	flipLiteralValue(java.lang.String value)	Performs appropriate replacements needed for BiDi flipping a literal value.
protected <T extends CssValueNode> T	flipNode(T tNode)	Returns flipped node after making appropriate replacements needed for BiDi flipping, if the node is either a LiteralNode or PropertyNode.
static java.lang.String	flipPercentageValue(java.lang.String value)	Returns a formatted string representing 100% - value.
void	runPass()

Methods inherited from class com.google.common.css.compiler.ast.DefaultTreeVisitor

enterArgumentNode, enterAttributeSelector, enterBlock, enterCharSet, enterClassSelector, enterCombinator, enterComponent, enterCompositeValueNode, enterCompositeValueNodeOperator, enterConditionalBlock, enterConditionalRule, enterDeclarationBlock, enterDefinition, enterFontFace, enterForLoop, enterFunctionNode, enterIdSelector, enterImportBlock, enterImportRule, enterKey, enterKeyBlock, enterKeyframeRuleset, enterKeyframesRule, enterMediaRule, enterMediaTypeListDelimiter, enterMixin, enterMixinDefinition, enterPageRule, enterPageSelector, enterPropertyValue, enterProvideNode, enterPseudoClass, enterPseudoElement, enterRequireNode, enterRuleset, enterSelector, enterSelectorBlock, enterTree, enterUnknownAtRule, enterValueNode, leaveArgumentNode, leaveAttributeSelector, leaveBlock, leaveCharSet, leaveClassSelector, leaveCombinator, leaveComponent, leaveCompositeValueNode, leaveCompositeValueNodeOperator, leaveConditionalBlock, leaveConditionalRule, leaveDeclaration, leaveDeclarationBlock, leaveDefinition, leaveFontFace, leaveForLoop, leaveFunctionNode, leaveIdSelector, leaveImportBlock, leaveImportRule, leaveKey, leaveKeyBlock, leaveKeyframeRuleset, leaveKeyframesRule, leaveMediaRule, leaveMediaTypeListDelimiter, leaveMixin, leaveMixinDefinition, leavePageRule, leavePageSelector, leavePropertyValue, leaveProvideNode, leavePseudoClass, leavePseudoElement, leaveRequireNode, leaveRuleset, leaveSelector, leaveSelectorBlock, leaveTree, leaveUnknownAtRule, leaveValueNode

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

RIGHT

public static final java.lang.String RIGHT

See Also:

Constant Field Values

BORDER_RADIUS_PROPERTIES

public static final com.google.common.collect.ImmutableSet<java.lang.String> BORDER_RADIUS_PROPERTIES

FOUR_PART_PROPERTIES_THAT_SHOULD_FLIP

public static final com.google.common.collect.ImmutableSet<java.lang.String> FOUR_PART_PROPERTIES_THAT_SHOULD_FLIP

Set of properties whose property values may flip if they match the four-part pattern.

Constructor Detail

BiDiFlipper

public BiDiFlipper(MutatingVisitController visitController,
                   boolean swapLtrRtlInUrl,
                   boolean swapLeftRightInUrl,
                   boolean shouldFlipConstantReferences)

BiDiFlipper

public BiDiFlipper(MutatingVisitController visitController,
                   boolean swapLtrRtlInUrl,
                   boolean swapLeftRightInUrl)

Method Detail

flipPercentageValue

public static java.lang.String flipPercentageValue(java.lang.String value)

Returns a formatted string representing 100% - value. Neither the input nor the output contains a %.

flipLiteralValue

public static java.lang.String flipLiteralValue(java.lang.String value)

Performs appropriate replacements needed for BiDi flipping a literal value.

flipNode

protected <T extends CssValueNode> T flipNode(T tNode)

Returns flipped node after making appropriate replacements needed for BiDi flipping, if the node is either a LiteralNode or PropertyNode. Eg: PropertyNode 'padding-right' would become 'padding-left'.

Subclasses can override to provide custom flipping behavior.

enterDeclaration

public boolean enterDeclaration(CssDeclarationNode declarationNode)

Description copied from interface: CssTreeVisitor

Called before visiting a CssDeclarationNode's sub trees

Specified by:

enterDeclaration in interface CssTreeVisitor

Overrides:

enterDeclaration in class DefaultTreeVisitor

runPass

public void runPass()

Specified by:

runPass in interface CssCompilerPass