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/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* 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.
*/
/*
* Created by IntelliJ IDEA.
* User: Maxim.Mossienko
* Date: Oct 19, 2006
* Time: 9:41:42 PM
*/
package com.intellij.codeInsight.completion;
import com.intellij.codeInsight.TailType;
import com.intellij.codeInsight.lookup.LookupElement;
import com.intellij.psi.PsiDocumentManager;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiNamedElement;
import com.intellij.psi.filters.*;
import com.intellij.psi.filters.position.LeftNeighbour;
import com.intellij.psi.filters.position.XmlTokenTypeFilter;
import com.intellij.psi.search.PsiElementProcessor;
import com.intellij.psi.util.PsiTreeUtil;
import com.intellij.psi.xml.XmlEntityDecl;
import com.intellij.psi.xml.XmlFile;
import com.intellij.psi.xml.XmlToken;
import com.intellij.psi.xml.XmlTokenType;
import com.intellij.util.ArrayUtil;
import com.intellij.xml.util.XmlUtil;
import org.jetbrains.annotations.NotNull;
import java.util.LinkedList;
import java.util.List;
/**
* Created by IntelliJ IDEA.
* User: ik
* Date: 05.06.2003
* Time: 18:55:15
* To change this template use Options | File Templates.
*/
public class DtdCompletionData extends CompletionData {
public DtdCompletionData() {
final LeftNeighbour entityFilter = new LeftNeighbour(new XmlTextFilter("%"));
declareFinalScope(XmlToken.class);
{
final CompletionVariant variant = new CompletionVariant(
new AndFilter(
new LeftNeighbour(
new OrFilter(
new XmlTextFilter("#", "!", "(", ",", "|", "["),
new XmlTokenTypeFilter(XmlTokenType.XML_NAME)
)
),
new NotFilter(entityFilter)
)
);
variant.includeScopeClass(XmlToken.class, true);
variant.addCompletion(
new String[] {
"#PCDATA","#IMPLIED","#REQUIRED","#FIXED","<!ATTLIST", "<!ELEMENT", "<!NOTATION", "INCLUDE", "IGNORE", "CDATA", "ID" , "IDREF", "EMPTY", "ANY",
"IDREFS", "ENTITIES", "ENTITY", "<!ENTITY", "NMTOKEN", "NMTOKENS", "SYSTEM", "PUBLIC"
},
TailType.NONE
);
variant.setInsertHandler(new MyInsertHandler());
registerVariant(variant);
}
{
final CompletionVariant variant = new CompletionVariant(entityFilter);
variant.includeScopeClass(XmlToken.class, true);
variant.addCompletion(new DtdEntityGetter());
variant.setInsertHandler(new XmlCompletionData.EntityRefInsertHandler());
registerVariant(variant);
}
}
@Override
public String findPrefix(PsiElement insertedElement, int offset) {
final PsiElement prevLeaf = PsiTreeUtil.prevLeaf(insertedElement);
final PsiElement prevPrevLeaf = prevLeaf != null ? PsiTreeUtil.prevLeaf(prevLeaf):null;
String prefix = super.findPrefix(insertedElement, offset);
if (prevLeaf != null) {
final String prevLeafText = prevLeaf.getText();
if("#".equals(prevLeafText)) {
prefix = "#" + prefix;
} else if ("!".equals(prevLeafText) && prevPrevLeaf != null && "<".equals(prevPrevLeaf.getText())) {
prefix = "<!" + prefix;
}
}
return prefix;
}
static class DtdEntityGetter implements ContextGetter {
@Override
public Object[] get(final PsiElement context, CompletionContext completionContext) {
final List<String> results = new LinkedList<String>();
final PsiElementProcessor processor = new PsiElementProcessor() {
@Override
public boolean execute(@NotNull final PsiElement element) {
if (element instanceof XmlEntityDecl) {
final XmlEntityDecl xmlEntityDecl = (XmlEntityDecl)element;
if (xmlEntityDecl.isInternalReference()) {
results.add(xmlEntityDecl.getName());
}
}
return true;
}
};
XmlUtil.processXmlElements((XmlFile)context.getContainingFile().getOriginalFile(), processor, true);
return ArrayUtil.toObjectArray(results);
}
}
static class MyInsertHandler extends BasicInsertHandler {
@Override
public void handleInsert(InsertionContext context, LookupElement item) {
super.handleInsert(context, item);
if (item.getObject().toString().startsWith("<!")) {
PsiDocumentManager.getInstance(context.getProject()).commitAllDocuments();
int caretOffset = context.getEditor().getCaretModel().getOffset();
PsiElement tag = PsiTreeUtil.getParentOfType(context.getFile().findElementAt(caretOffset), PsiNamedElement.class);
if (tag == null) {
context.getEditor().getDocument().insertString(caretOffset, " >");
context.getEditor().getCaretModel().moveToOffset(caretOffset + 1);
}
}
}
}
}
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