/*
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.flex.compiler.internal.tree.mxml;
import java.util.Collection;
import org.antlr.runtime.ANTLRStringStream;
import org.apache.flex.compiler.css.ICSSDocument;
import org.apache.flex.compiler.internal.caches.CSSDocumentCache;
import org.apache.flex.compiler.internal.css.CSSDocument;
import org.apache.flex.compiler.internal.tree.as.NodeBase;
import org.apache.flex.compiler.mxml.IMXMLLanguageConstants;
import org.apache.flex.compiler.mxml.IMXMLTagAttributeData;
import org.apache.flex.compiler.mxml.IMXMLTagData;
import org.apache.flex.compiler.mxml.IMXMLTextData;
import org.apache.flex.compiler.problems.ICompilerProblem;
import org.apache.flex.compiler.problems.MXMLDualContentProblem;
import org.apache.flex.compiler.tree.ASTNodeID;
import org.apache.flex.compiler.tree.mxml.IMXMLStyleNode;
import static org.apache.flex.compiler.mxml.IMXMLLanguageConstants.*;
class MXMLStyleNode extends MXMLNodeBase implements IMXMLStyleNode
{
/**
* Constructor
*
* @param parent The parent node of this node, or <code>null</code> if there
* is no parent.
*/
MXMLStyleNode(NodeBase parent)
{
super(parent);
}
/**
* This field caches parsed CSS model in this node for
* {@link #getCSSDocument(Collection)}.
*/
private ICSSDocument cssDocument;
/**
* All CSS text in this node will be aggregated here. The CSS text can
* either be text of {@code <fx:Style>} node or included by
* {@code <fx:Style src="styles.css" />}.
*/
private String cssText;
@Override
public ASTNodeID getNodeID()
{
return ASTNodeID.MXMLStyleID;
}
@Override
public String getName()
{
return IMXMLLanguageConstants.STYLE;
}
@Override
public ICSSDocument getCSSDocument(final Collection<ICompilerProblem> problems)
{
if (cssDocument == null)
{
if (cssText != null && !cssText.isEmpty() && !cssText.trim().isEmpty())
{
ANTLRStringStream stream = new ANTLRStringStream(cssText);
stream.name = getSourcePath();
cssDocument = CSSDocument.parse(stream, problems);
}
else
{
cssDocument = CSSDocumentCache.EMPTY_CSS_DOCUMENT;
}
}
return cssDocument;
}
@Override
protected MXMLNodeInfo createNodeInfo(MXMLTreeBuilder builder)
{
return new MXMLNodeInfo(builder);
}
@Override
protected void processTagSpecificAttribute(MXMLTreeBuilder builder, IMXMLTagData tag,
IMXMLTagAttributeData attribute,
MXMLNodeInfo info)
{
if (attribute.isSpecialAttribute(ATTRIBUTE_SOURCE))
{
// Resolve the attribute value to a normalized path.
// Doing so makes this compilation unit dependent on that file.
final String sourcePath = resolveSourceAttributePath(builder, attribute, info);
if (sourcePath != null)
cssText = builder.readExternalFile(attribute, sourcePath);
}
else
{
super.processTagSpecificAttribute(builder, tag, attribute, info);
}
}
@Override
protected void processChildNonWhitespaceUnit(MXMLTreeBuilder builder, IMXMLTagData tag,
IMXMLTextData text,
MXMLNodeInfo info)
{
info.hasDualContent = true;
}
@Override
protected void initializationComplete(MXMLTreeBuilder builder, IMXMLTagData tag,
MXMLNodeInfo info)
{
super.initializationComplete(builder, tag, info);
if (info.hasSourceAttribute && info.hasDualContent)
{
ICompilerProblem problem = new MXMLDualContentProblem(tag, tag.getShortName());
builder.addProblem(problem);
return;
}
// If <fx:Style> tag has a valid 'source' attribute, the text of the node is ignored.
if (cssText == null)
cssText = tag.getCompilableText();
// Register this "style" node with the root "MXMLFileNode".
builder.getFileNode().getStyleNodes().add(this);
}
}