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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.
*/
package com.intellij.codeInsight.actions;
import com.intellij.codeInsight.CodeInsightActionHandler;
import com.intellij.lang.xml.XMLLanguage;
import com.intellij.openapi.actionSystem.ActionPlaces;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.Presentation;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.Project;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.PsiFileFactory;
import com.intellij.psi.PsiWhiteSpace;
import com.intellij.psi.util.PsiTreeUtil;
import com.intellij.psi.xml.XmlDocument;
import com.intellij.psi.xml.XmlFile;
import com.intellij.psi.xml.XmlProcessingInstruction;
import com.intellij.psi.xml.XmlProlog;
import com.intellij.util.IncorrectOperationException;
import com.intellij.xml.util.XmlUtil;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
/**
* Created by IntelliJ IDEA.
* User: ik
* Date: 22.05.2003
* Time: 13:46:54
*/
public class GenerateDTDAction extends BaseCodeInsightAction{
private static final Logger LOG = Logger.getInstance("#com.intellij.codeInsight.actions.GenerateDTDAction");
@Override
@NotNull
protected CodeInsightActionHandler getHandler(){
return new CodeInsightActionHandler(){
@Override
public void invoke(@NotNull Project project, @NotNull Editor editor, @NotNull PsiFile file) {
final XmlDocument document = findSuitableXmlDocument(file);
if (document != null) {
final @NonNls StringBuilder buffer = new StringBuilder();
buffer.append("<!DOCTYPE " + document.getRootTag().getName() + " [\n");
buffer.append(XmlUtil.generateDocumentDTD(document, true));
buffer.append("]>\n");
XmlFile tempFile;
try{
final XmlProlog prolog = document.getProlog();
final PsiElement childOfType = PsiTreeUtil.getChildOfType(prolog, XmlProcessingInstruction.class);
if (childOfType != null) {
final String text = childOfType.getText();
buffer.insert(0,text);
final PsiElement nextSibling = childOfType.getNextSibling();
if (nextSibling instanceof PsiWhiteSpace) {
buffer.insert(text.length(),nextSibling.getText());
}
}
tempFile = (XmlFile)PsiFileFactory.getInstance(file.getProject()).createFileFromText("dummy.xml", buffer.toString());
prolog.replace(tempFile.getDocument().getProlog());
}
catch (IncorrectOperationException e) {
LOG.error(e);
}
}
}
@Override
public boolean startInWriteAction(){
return true;
}
};
}
@Nullable
private static XmlDocument findSuitableXmlDocument(@Nullable PsiFile psiFile) {
if (psiFile instanceof XmlFile) {
final XmlDocument document = ((XmlFile)psiFile).getDocument();
if (document != null && document.getRootTag() != null) {
return document;
}
}
return null;
}
@Override
public void update(AnActionEvent event) {
super.update(event);
if (ActionPlaces.isPopupPlace(event.getPlace())) {
Presentation presentation = event.getPresentation();
presentation.setVisible(presentation.isEnabled());
}
}
@Override
protected boolean isValidForFile(@NotNull Project project, @NotNull Editor editor, @NotNull PsiFile file){
return file.getLanguage() == XMLLanguage.INSTANCE && findSuitableXmlDocument(file) != null;
}
}
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