com.google.common.css.compiler.ast.AtRuleHandler Maven / Gradle / Ivy
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Show all versions of closure-stylesheets Show documentation
Closure Stylesheets is an extension to CSS that adds variables, functions,
conditionals, and mixins to standard CSS. The tool also supports
minification, linting, RTL flipping, and CSS class renaming.
/*
* Copyright 2008 Google Inc.
*
* 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.
*/
package com.google.common.css.compiler.ast;
/**
* A handler for at rules.
*/
public interface AtRuleHandler {
/**
* @return {@code true} if the contents of the rule should be visited,
* false otherwise. {@link #leaveConditionalRule(CssConditionalRuleNode)}
* will still be called.
*
* @param node node
*/
boolean enterConditionalRule(CssConditionalRuleNode node);
/**
* Called after visiting a {@code CssConditionalRuleNode}'s sub trees
*
* @param node node
*/
void leaveConditionalRule(CssConditionalRuleNode node);
/**
* Called before visiting a {@code CssImportRuleNode}'s sub trees
*
* @param node node
*/
boolean enterImportRule(CssImportRuleNode node);
/**
* Called after visiting a {@code CssImportRuleNode}'s sub trees
*
* @param node node
*/
void leaveImportRule(CssImportRuleNode node);
/**
* Called before visiting a {@code CssMediaRuleNode}'s sub trees
*
* @param node node
*/
boolean enterMediaRule(CssMediaRuleNode node);
/**
* Called after visiting a {@code CssMediaRuleNode}'s sub trees
*
* @param node node
*/
void leaveMediaRule(CssMediaRuleNode node);
/**
* Called before visiting a {@code CssPageRuleNode}'s sub trees
*
* @param node node
*/
boolean enterPageRule(CssPageRuleNode node);
/**
* Called after visiting a {@code CssPageRuleNode}'s sub trees
*
* @param node node
*/
void leavePageRule(CssPageRuleNode node);
/**
* Called before visiting a {@code CssPageSelectorNode}'s sub trees
*
* @param node node
*/
boolean enterPageSelector(CssPageSelectorNode node);
/**
* Called after visiting a {@code CssPageSelectorNode}'s sub trees
*
* @param node node
*/
void leavePageSelector(CssPageSelectorNode node);
/**
* Called before visiting a {@code CssFontFaceNode}'s sub trees
*
* @param node node
*/
boolean enterFontFace(CssFontFaceNode node);
/**
* Called after visiting a {@code CssFontFaceNode}'s sub trees
*
* @param node node
*/
void leaveFontFace(CssFontFaceNode node);
/**
* Called before visiting a {@code CssCharSetNode}'s sub trees
*
* @param node node
*/
boolean enterCharSet(CssCharSetNode node);
/**
* Called after visiting a {@code CssCharSetNode}'s sub trees
*
* @param node node
*/
void leaveCharSet(CssCharSetNode node);
/**
* @return {@code true} if the contents of the rule should be visited,
* false otherwise. {@link #leaveDefinition(CssDefinitionNode)}
* will still be called.
*
* @param node node
*/
boolean enterDefinition(CssDefinitionNode node);
/**
* Called after visiting a {@code CssDefinitionNode}'s sub trees
*
* @param node node
*/
void leaveDefinition(CssDefinitionNode node);
/**
* Called before visiting a {@code CssUnknownAtRuleNode}'s sub trees
*
* @param node node
*/
boolean enterUnknownAtRule(CssUnknownAtRuleNode node);
/**
* Called after visiting a {@code CssUnknownAtRuleNode}'s sub trees
*/
void leaveUnknownAtRule(CssUnknownAtRuleNode node);
/**
* Called between adjacent nodes in a media type list
*
* @param node node
*/
boolean enterMediaTypeListDelimiter(CssNodesListNode node);
/**
* Called between adjacent nodes in a media type list
*
* @param node node
*/
void leaveMediaTypeListDelimiter(CssNodesListNode node);
/**
* Called before visiting a {@code CssComponentNode}'s sub trees
*
* @param node node
*/
boolean enterComponent(CssComponentNode node);
/**
* Called after visiting a {@code CssComponentNode}'s sub trees
*
* @param node node
*/
void leaveComponent(CssComponentNode node);
/**
* Called before visiting a {@code CssKeyframesNode}'s sub trees
*
* @param node node
*/
boolean enterKeyframesRule(CssKeyframesNode node);
/**
* Called after visiting a {@code CssKeyframesNode}'s sub trees
*
* @param node node
*/
void leaveKeyframesRule(CssKeyframesNode node);
/**
* Called before visiting a {@code CssMixinDefinitionNode}'s sub trees
*
* @param node node
*/
boolean enterMixinDefinition(CssMixinDefinitionNode node);
/**
* Called after visiting a {@code CssMixinDefinitionNode}'s sub trees
*
* @param node node
*/
void leaveMixinDefinition(CssMixinDefinitionNode node);
/**
* Called before visiting a {@code CssMixinNode}'s sub trees
*
* @param node node
*/
boolean enterMixin(CssMixinNode node);
/**
* Called after visiting a {@code CssMixinNode}'s sub trees
*
* @param node node
*/
void leaveMixin(CssMixinNode node);
/**
* Called before visiting a {@code CssProvideNode}'s sub trees
*
* @param node node
*/
boolean enterProvideNode(CssProvideNode node);
/**
* Called after visiting a {@code CssProvideNode}'s sub trees
*
* @param node node
*/
void leaveProvideNode(CssProvideNode node);
/**
* Called before visiting a {@code CssRequireNode}'s sub trees
*
* @param node node
*/
boolean enterRequireNode(CssRequireNode node);
/**
* Called after visiting a {@code CssRequireNode}'s sub trees
*
* @param node node
*/
void leaveRequireNode(CssRequireNode node);
}