All Superinterfaces:

AtRuleHandler

All Known Implementing Classes:

AbbreviatePositionalValues, AutoExpandBrowserPrefix, BiDiFlipper, CheckDependencyNodes, CheckMissingRequire, CollectConstantDefinitions, CollectMixinDefinitions, CollectProvideNamespaces, ColorValueOptimizer, CompactPrintingVisitor, CreateComponentNodes, CreateConditionalNodes, CreateConstantReferences, CreateDefinitionNodes, CreateForLoopNodes, CreateMixins, CreateVendorPrefixedKeyframes, CssClassRenaming, DefaultTreeVisitor, DefinitionPrintingVisitor, DisallowDuplicateDeclarations, EliminateConditionalNodes, EliminateEmptyRulesetNodes, EliminateUnitsFromZeroNumericValues, EliminateUselessRulesetNodes, EvaluateCompileConstants, FixupFontDeclarations, HandleMissingConstantDefinitions, HandleUnknownAtRuleNodes, HasConditionalNodes, MapChunkAwareNodesToChunk, MarkDefaultDefinitions, MarkNonFlippableNodes, MarkRemovableRulesetNodes, MarkRemovableRulesetNodesForChunk, MergeAdjacentRulesetNodesWithSameDeclarations, MergeAdjacentRulesetNodesWithSameSelector, PrettyPrintingVisitor, ProcessComponents, ProcessKeyframes, ProcessRefiners, RelocateDefaultComments, RemoveDefaultDeclarations, RemoveEmptyValues, RemoveVendorSpecificProperties, ReplaceConstantReferences, ReplaceMixins, ResolveCustomFunctionNodes, ResolveCustomFunctionNodesForChunks, SExprPrintingVisitor, SkippingTreeVisitor, SplitRulesetNodes, StrictCss2, StrictCss3, StrictCssBase, TemplateCompactPrintingVisitor, UnrollLoops, ValidatePropertyValues, VerifyRecognizedProperties, WarnOnCustomProperty
```
public interface CssTreeVisitor
extends AtRuleHandler
```
Visitor interface for CSS abstract syntax trees.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`enterArgumentNode(CssValueNode value)`	Called before visiting a `CssFunctionNode`'s sub trees
`boolean`	`enterAttributeSelector(CssAttributeSelectorNode attributeSelector)`	Called before visiting a `CssAttributeSelectorNode`'s sub trees
`boolean`	`enterBlock(CssBlockNode block)`	Called before visiting a `CssBlockNode`'s sub trees
`boolean`	`enterClassSelector(CssClassSelectorNode classSelector)`	Called before visiting a `CssClassSelectorNode`'s sub trees
`boolean`	`enterCombinator(CssCombinatorNode combinator)`	Called before visiting a `CssCombinatorNode`'s sub trees
`boolean`	`enterCompositeValueNode(CssCompositeValueNode value)`	Called before visiting a `CssValueNode` that is a `CssCompositeValueNode`
`boolean`	`enterCompositeValueNodeOperator(CssCompositeValueNode parent)`	Called between values in a `CssCompositeValueNode`
`boolean`	`enterConditionalBlock(CssConditionalBlockNode block)`	Called before visiting a `CssConditionalBlockNode`'s sub trees
`boolean`	`enterDeclaration(CssDeclarationNode declaration)`	Called before visiting a `CssDeclarationNode`'s sub trees
`boolean`	`enterDeclarationBlock(CssDeclarationBlockNode block)`	Called before visiting a `CssDeclarationBlockNode`'s sub trees
`boolean`	`enterForLoop(CssForLoopRuleNode node)`	Called before visiting a `CssForLoopRuleNode`'s sub trees
`boolean`	`enterFunctionNode(CssFunctionNode value)`	Called before visiting a `CssFunctionNode`'s sub trees
`boolean`	`enterIdSelector(CssIdSelectorNode idSelector)`	Called before visiting a `CssIdSelectorNode`'s sub trees
`boolean`	`enterImportBlock(CssImportBlockNode block)`	Called before visiting a `CssImportBlockNode`'s sub trees
`boolean`	`enterKey(CssKeyNode key)`	Called before visiting a `CssKeyNode`'s sub trees
`boolean`	`enterKeyBlock(CssKeyListNode block)`	Called before visiting a `CssKeyListNode`'s sub trees
`boolean`	`enterKeyframeRuleset(CssKeyframeRulesetNode key)`	Called before visiting a `CssKeyframeRulesetNode`'s sub trees
`boolean`	`enterPropertyValue(CssPropertyValueNode propertyValue)`	Called before visiting a `CssPropertyValueNode`'s sub trees
`boolean`	`enterPseudoClass(CssPseudoClassNode pseudoClass)`	Called before visiting a `CssPseudoClassNode`'s sub trees
`boolean`	`enterPseudoElement(CssPseudoElementNode pseudoElement)`	Called before visiting a `CssPseudoElementNode`'s sub trees
`boolean`	`enterRuleset(CssRulesetNode ruleset)`	Called before visiting a `CssRulesetNode`'s sub trees.
`boolean`	`enterSelector(CssSelectorNode selector)`	Called before visiting a `CssSelectorNode`'s sub trees
`boolean`	`enterSelectorBlock(CssSelectorListNode block)`	Called before visiting a `CssSelectorListNode`'s sub trees
`boolean`	`enterTree(CssRootNode root)`	Called before visiting a `CssRootNode`'s sub trees
`boolean`	`enterValueNode(CssValueNode value)`	Called before visiting a `CssValueNode` that is not a `CssCompositeValueNode`
`void`	`leaveArgumentNode(CssValueNode value)`	Called after visiting a `CssFunctionNode`'s sub trees.
`void`	`leaveAttributeSelector(CssAttributeSelectorNode attributeSelector)`	Called after visiting a `CssAttributeSelectorNode`'s sub trees
`void`	`leaveBlock(CssBlockNode block)`	Called after visiting a `CssBlockNode`'s sub trees
`void`	`leaveClassSelector(CssClassSelectorNode classSelector)`	Called after visiting a `CssClassSelectorNode`'s sub trees
`void`	`leaveCombinator(CssCombinatorNode combinator)`	Called after visiting a `CssCombinatorNode`'s sub trees
`void`	`leaveCompositeValueNode(CssCompositeValueNode value)`	Called after visiting a `CssValueNode` that is a `CssCompositeValueNode`
`void`	`leaveCompositeValueNodeOperator(CssCompositeValueNode parent)`	Called between values in a `CssCompositeValueNode`
`void`	`leaveConditionalBlock(CssConditionalBlockNode block)`	Called after visiting a `CssConditionalBlockNode`'s sub trees
`void`	`leaveDeclaration(CssDeclarationNode declaration)`	Called after visiting a `CssDeclarationNode`'s sub trees
`void`	`leaveDeclarationBlock(CssDeclarationBlockNode block)`	Called after visiting a `CssDeclarationBlockNode`'s sub trees
`void`	`leaveForLoop(CssForLoopRuleNode node)`	Called after visiting a `CssForLoopRuleNode`'s sub trees
`void`	`leaveFunctionNode(CssFunctionNode value)`	Called after visiting a `CssFunctionNode`'s sub trees.
`void`	`leaveIdSelector(CssIdSelectorNode idSelector)`	Called after visiting a `CssIdSelectorNode`'s sub trees
`void`	`leaveImportBlock(CssImportBlockNode block)`	Called after visiting a `CssImportBlockNode`'s sub trees
`void`	`leaveKey(CssKeyNode key)`	Called after visiting a `CssKeyNode`'s sub trees
`void`	`leaveKeyBlock(CssKeyListNode block)`	Called after visiting a `CssKeyListNode`'s sub trees
`void`	`leaveKeyframeRuleset(CssKeyframeRulesetNode key)`	Called after visiting a `CssKeyframeRulesetNode`'s sub trees
`void`	`leavePropertyValue(CssPropertyValueNode propertyValue)`	Called after visiting a `CssPropertyValueNode`'s sub trees
`void`	`leavePseudoClass(CssPseudoClassNode pseudoClass)`	Called after visiting a `CssPseudoClassNode`'s sub trees
`void`	`leavePseudoElement(CssPseudoElementNode pseudoElement)`	Called after visiting a `CssPseudoElementNode`'s sub trees
`void`	`leaveRuleset(CssRulesetNode ruleset)`	Called after visiting a `CssRulesetNode`'s sub trees
`void`	`leaveSelector(CssSelectorNode selector)`	Called after visiting a `CssSelectorNode`'s sub trees
`void`	`leaveSelectorBlock(CssSelectorListNode block)`	Called after visiting a `CssSelectorListNode`'s sub trees
`void`	`leaveTree(CssRootNode root)`	Called after visiting a `CssRootNode`'s sub trees
`void`	`leaveValueNode(CssValueNode value)`	Called after visiting a `CssValueNode` that is not a `CssCompositeValueNode`

- Method Detail
  - enterTree
```
boolean enterTree(CssRootNode root)
```
    Called before visiting a CssRootNode's sub trees
  - leaveTree
```
void leaveTree(CssRootNode root)
```
    Called after visiting a CssRootNode's sub trees
  - enterImportBlock
```
boolean enterImportBlock(CssImportBlockNode block)
```
    Called before visiting a CssImportBlockNode's sub trees
  - leaveImportBlock
```
void leaveImportBlock(CssImportBlockNode block)
```
    Called after visiting a CssImportBlockNode's sub trees
  - enterBlock
```
boolean enterBlock(CssBlockNode block)
```
    Called before visiting a CssBlockNode's sub trees
  - leaveBlock
```
void leaveBlock(CssBlockNode block)
```
    Called after visiting a CssBlockNode's sub trees
  - enterConditionalBlock
```
boolean enterConditionalBlock(CssConditionalBlockNode block)
```
    Called before visiting a CssConditionalBlockNode's sub trees
  - leaveConditionalBlock
```
void leaveConditionalBlock(CssConditionalBlockNode block)
```
    Called after visiting a CssConditionalBlockNode's sub trees
  - enterDeclarationBlock
```
boolean enterDeclarationBlock(CssDeclarationBlockNode block)
```
    Called before visiting a CssDeclarationBlockNode's sub trees
  - leaveDeclarationBlock
```
void leaveDeclarationBlock(CssDeclarationBlockNode block)
```
    Called after visiting a CssDeclarationBlockNode's sub trees
  - enterRuleset
```
boolean enterRuleset(CssRulesetNode ruleset)
```
    Called before visiting a CssRulesetNode's sub trees.
    
    Returns:
    
    whether ruleset children should be visited
  - leaveRuleset
```
void leaveRuleset(CssRulesetNode ruleset)
```
    Called after visiting a CssRulesetNode's sub trees
  - enterSelectorBlock
```
boolean enterSelectorBlock(CssSelectorListNode block)
```
    Called before visiting a CssSelectorListNode's sub trees
  - leaveSelectorBlock
```
void leaveSelectorBlock(CssSelectorListNode block)
```
    Called after visiting a CssSelectorListNode's sub trees
  - enterDeclaration
```
boolean enterDeclaration(CssDeclarationNode declaration)
```
    Called before visiting a CssDeclarationNode's sub trees
  - leaveDeclaration
```
void leaveDeclaration(CssDeclarationNode declaration)
```
    Called after visiting a CssDeclarationNode's sub trees
  - enterSelector
```
boolean enterSelector(CssSelectorNode selector)
```
    Called before visiting a CssSelectorNode's sub trees
  - leaveSelector
```
void leaveSelector(CssSelectorNode selector)
```
    Called after visiting a CssSelectorNode's sub trees
  - enterClassSelector
```
boolean enterClassSelector(CssClassSelectorNode classSelector)
```
    Called before visiting a CssClassSelectorNode's sub trees
  - leaveClassSelector
```
void leaveClassSelector(CssClassSelectorNode classSelector)
```
    Called after visiting a CssClassSelectorNode's sub trees
  - enterIdSelector
```
boolean enterIdSelector(CssIdSelectorNode idSelector)
```
    Called before visiting a CssIdSelectorNode's sub trees
  - leaveIdSelector
```
void leaveIdSelector(CssIdSelectorNode idSelector)
```
    Called after visiting a CssIdSelectorNode's sub trees
  - enterPseudoClass
```
boolean enterPseudoClass(CssPseudoClassNode pseudoClass)
```
    Called before visiting a CssPseudoClassNode's sub trees
  - leavePseudoClass
```
void leavePseudoClass(CssPseudoClassNode pseudoClass)
```
    Called after visiting a CssPseudoClassNode's sub trees
  - enterPseudoElement
```
boolean enterPseudoElement(CssPseudoElementNode pseudoElement)
```
    Called before visiting a CssPseudoElementNode's sub trees
  - leavePseudoElement
```
void leavePseudoElement(CssPseudoElementNode pseudoElement)
```
    Called after visiting a CssPseudoElementNode's sub trees
  - enterAttributeSelector
```
boolean enterAttributeSelector(CssAttributeSelectorNode attributeSelector)
```
    Called before visiting a CssAttributeSelectorNode's sub trees
  - leaveAttributeSelector
```
void leaveAttributeSelector(CssAttributeSelectorNode attributeSelector)
```
    Called after visiting a CssAttributeSelectorNode's sub trees
  - enterPropertyValue
```
boolean enterPropertyValue(CssPropertyValueNode propertyValue)
```
    Called before visiting a CssPropertyValueNode's sub trees
  - leavePropertyValue
```
void leavePropertyValue(CssPropertyValueNode propertyValue)
```
    Called after visiting a CssPropertyValueNode's sub trees
  - enterCompositeValueNode
```
boolean enterCompositeValueNode(CssCompositeValueNode value)
```
    Called before visiting a CssValueNode that is a CssCompositeValueNode
  - leaveCompositeValueNode
```
void leaveCompositeValueNode(CssCompositeValueNode value)
```
    Called after visiting a CssValueNode that is a CssCompositeValueNode
  - enterValueNode
```
boolean enterValueNode(CssValueNode value)
```
    Called before visiting a CssValueNode that is not a CssCompositeValueNode
  - leaveValueNode
```
void leaveValueNode(CssValueNode value)
```
    Called after visiting a CssValueNode that is not a CssCompositeValueNode
  - enterCompositeValueNodeOperator
```
boolean enterCompositeValueNodeOperator(CssCompositeValueNode parent)
```
    Called between values in a CssCompositeValueNode
  - leaveCompositeValueNodeOperator
```
void leaveCompositeValueNodeOperator(CssCompositeValueNode parent)
```
    Called between values in a CssCompositeValueNode
  - enterFunctionNode
```
boolean enterFunctionNode(CssFunctionNode value)
```
    Called before visiting a CssFunctionNode's sub trees
  - leaveFunctionNode
```
void leaveFunctionNode(CssFunctionNode value)
```
    Called after visiting a CssFunctionNode's sub trees.
  - enterArgumentNode
```
boolean enterArgumentNode(CssValueNode value)
```
    Called before visiting a CssFunctionNode's sub trees
  - leaveArgumentNode
```
void leaveArgumentNode(CssValueNode value)
```
    Called after visiting a CssFunctionNode's sub trees.
  - enterCombinator
```
boolean enterCombinator(CssCombinatorNode combinator)
```
    Called before visiting a CssCombinatorNode's sub trees
  - leaveCombinator
```
void leaveCombinator(CssCombinatorNode combinator)
```
    Called after visiting a CssCombinatorNode's sub trees
  - enterKey
```
boolean enterKey(CssKeyNode key)
```
    Called before visiting a CssKeyNode's sub trees
  - leaveKey
```
void leaveKey(CssKeyNode key)
```
    Called after visiting a CssKeyNode's sub trees
  - enterKeyBlock
```
boolean enterKeyBlock(CssKeyListNode block)
```
    Called before visiting a CssKeyListNode's sub trees
  - leaveKeyBlock
```
void leaveKeyBlock(CssKeyListNode block)
```
    Called after visiting a CssKeyListNode's sub trees
  - enterKeyframeRuleset
```
boolean enterKeyframeRuleset(CssKeyframeRulesetNode key)
```
    Called before visiting a CssKeyframeRulesetNode's sub trees
  - leaveKeyframeRuleset
```
void leaveKeyframeRuleset(CssKeyframeRulesetNode key)
```
    Called after visiting a CssKeyframeRulesetNode's sub trees
  - enterForLoop
```
boolean enterForLoop(CssForLoopRuleNode node)
```
    Called before visiting a CssForLoopRuleNode's sub trees
  - leaveForLoop
```
void leaveForLoop(CssForLoopRuleNode node)
```
    Called after visiting a CssForLoopRuleNode's sub trees

Interface CssTreeVisitor

Method Summary

Methods inherited from interface com.google.common.css.compiler.ast.AtRuleHandler

Method Detail

enterTree

leaveTree

enterImportBlock

leaveImportBlock

enterBlock

leaveBlock

enterConditionalBlock

leaveConditionalBlock

enterDeclarationBlock

leaveDeclarationBlock

enterRuleset

leaveRuleset

enterSelectorBlock

leaveSelectorBlock

enterDeclaration

leaveDeclaration

enterSelector

leaveSelector

enterClassSelector

leaveClassSelector

enterIdSelector

leaveIdSelector

enterPseudoClass

leavePseudoClass

enterPseudoElement

leavePseudoElement

enterAttributeSelector

leaveAttributeSelector

enterPropertyValue

leavePropertyValue

enterCompositeValueNode

leaveCompositeValueNode

enterValueNode

leaveValueNode

enterCompositeValueNodeOperator

leaveCompositeValueNodeOperator

enterFunctionNode

leaveFunctionNode

enterArgumentNode

leaveArgumentNode

enterCombinator

leaveCombinator

enterKey

leaveKey

enterKeyBlock

leaveKeyBlock

enterKeyframeRuleset

leaveKeyframeRuleset

enterForLoop

leaveForLoop