ExternalClassesCollector (GWT Javadoc)

java.lang.Object
- com.google.gwt.thirdparty.common.css.compiler.ast.DefaultTreeVisitor
- - com.google.gwt.resources.gss.ExternalClassesCollector

All Implemented Interfaces:

com.google.gwt.thirdparty.common.css.compiler.ast.AtRuleHandler, com.google.gwt.thirdparty.common.css.compiler.ast.CssCompilerPass, com.google.gwt.thirdparty.common.css.compiler.ast.CssTreeVisitor
```
public class ExternalClassesCollector
extends com.google.gwt.thirdparty.common.css.compiler.ast.DefaultTreeVisitor
implements com.google.gwt.thirdparty.common.css.compiler.ast.CssCompilerPass
```
Compiler pass that collects external styles declared with the @external at-rule.
This pass also removes the @external nodes from the AST.

Field Summary

Fields
Modifier and Type Field and Description

static java.lang.String EXTERNAL_AT_RULE

Fields
Modifier and Type	Field and Description
`static java.lang.String`	`EXTERNAL_AT_RULE`

Constructor Summary

Constructors
Constructor and Description
`ExternalClassesCollector(com.google.gwt.thirdparty.common.css.compiler.ast.MutatingVisitController visitController, com.google.gwt.thirdparty.common.css.compiler.ast.ErrorManager errorManager)`

Method Summary

Methods
Modifier and Type	Method and Description
`boolean`	`enterClassSelector(com.google.gwt.thirdparty.common.css.compiler.ast.CssClassSelectorNode classSelector)`
`com.google.gwt.thirdparty.guava.common.collect.ImmutableSet<java.lang.String>`	`getExternalClassNames(java.util.Set<java.lang.String> styleClassesSet, java.util.Set<java.lang.String> orphanClassName)` Returns an immutable set of external class names that should not be renamed.
`void`	`leaveUnknownAtRule(com.google.gwt.thirdparty.common.css.compiler.ast.CssUnknownAtRuleNode node)`
`void`	`runPass()`

Methods inherited from class com.google.gwt.thirdparty.common.css.compiler.ast.DefaultTreeVisitor
enterArgumentNode, enterAttributeSelector, enterBlock, enterCombinator, enterComponent, enterCompositeValueNode, enterCompositeValueNodeOperator, enterConditionalBlock, enterConditionalRule, enterDeclaration, 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, 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, leaveValueNode, visit

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - EXTERNAL_AT_RULE
```
public static final java.lang.String EXTERNAL_AT_RULE
```
    See Also:
    Constant Field Values
- Constructor Detail
  - ExternalClassesCollector
```
public ExternalClassesCollector(com.google.gwt.thirdparty.common.css.compiler.ast.MutatingVisitController visitController,
                        com.google.gwt.thirdparty.common.css.compiler.ast.ErrorManager errorManager)
```
- Method Detail
  - runPass
```
public void runPass()
```
    Specified by:
    
    runPass in interface com.google.gwt.thirdparty.common.css.compiler.ast.CssCompilerPass
  - enterClassSelector
```
public boolean enterClassSelector(com.google.gwt.thirdparty.common.css.compiler.ast.CssClassSelectorNode classSelector)
```
    Specified by:
    
    enterClassSelector in interface com.google.gwt.thirdparty.common.css.compiler.ast.CssTreeVisitor
    
    Overrides:
    
    enterClassSelector in class com.google.gwt.thirdparty.common.css.compiler.ast.DefaultTreeVisitor
  - leaveUnknownAtRule
```
public void leaveUnknownAtRule(com.google.gwt.thirdparty.common.css.compiler.ast.CssUnknownAtRuleNode node)
```
    Specified by:
    
    leaveUnknownAtRule in interface com.google.gwt.thirdparty.common.css.compiler.ast.AtRuleHandler
    
    Overrides:
    
    leaveUnknownAtRule in class com.google.gwt.thirdparty.common.css.compiler.ast.DefaultTreeVisitor
  - getExternalClassNames
```
public com.google.gwt.thirdparty.guava.common.collect.ImmutableSet<java.lang.String> getExternalClassNames(java.util.Set<java.lang.String> styleClassesSet,
                                                                                                  java.util.Set<java.lang.String> orphanClassName)
```
    Returns an immutable set of external class names that should not be renamed. The returned set contains all complete class names defined with @external as well as all of the class names from styleClassesSet that match prefixes defined with @external.
    The set will contain also the class names that are not in the AST anymore (defined in a conditional node that has been evaluated to false) and are not associated to a java method. That doesn't make sense to rename these class names because they are not in the final css and javascript. Moreover we handle the case where an @external related to these style classes has been removed from the AST (because it was also defined in a conditional node evaluated to false) and the compiler doesn't have to throw and error for this case.
```
   /* conditional node evaluated to false at compile time */
```
    Parameters:
    styleClassesSet - a set of class names that should be filtered to return those matching external prefixes. Note that the passed-in set is not modified.
    orphanClassName - a set of class names that aren't associated to a java method of the CssResource interface.
    
    Returns:
    an immutable set of class names. Note that the returned names are not prefixed with "."; they are the raw name.

Class ExternalClassesCollector

Field Summary

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Field Detail

EXTERNAL_AT_RULE

Constructor Detail

ExternalClassesCollector

Method Detail

runPass

enterClassSelector

leaveUnknownAtRule

getExternalClassNames