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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.util.xml.actions.generate;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.Project;
import com.intellij.psi.PsiDocumentManager;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.PsiWhiteSpace;
import com.intellij.psi.util.PsiTreeUtil;
import com.intellij.psi.xml.XmlElement;
import com.intellij.psi.xml.XmlTag;
import com.intellij.util.ReflectionUtil;
import com.intellij.util.xml.DomElement;
import com.intellij.util.xml.DomUtil;
import com.intellij.util.xml.reflect.DomCollectionChildDescription;
import com.intellij.util.xml.ui.actions.generate.GenerateDomElementProvider;
import org.jetbrains.annotations.Nullable;
import java.util.List;
/**
* User: Sergey.Vasiliev
*/
public abstract class DefaultGenerateElementProvider<T extends DomElement> extends GenerateDomElementProvider<T> {
private final Class<T> myChildElementClass;
public DefaultGenerateElementProvider(final String name, Class<T> childElementClass) {
super(name);
myChildElementClass = childElementClass;
}
@Override
@Nullable
public T generate(final Project project, final Editor editor, final PsiFile file) {
return generate(getParentDomElement(project, editor, file), editor);
}
@Nullable
protected abstract DomElement getParentDomElement(final Project project, final Editor editor, final PsiFile file);
@SuppressWarnings({"unchecked"})
@Nullable
public T generate(@Nullable final DomElement parent, final Editor editor) {
if (parent == null) {
return null;
}
final List<? extends DomCollectionChildDescription> list = parent.getGenericInfo().getCollectionChildrenDescriptions();
for (DomCollectionChildDescription childDescription : list) {
if (ReflectionUtil.getRawType(childDescription.getType()).isAssignableFrom(myChildElementClass)) {
XmlTag parentTag = parent.getXmlTag();
if (editor != null && parentTag != null) {
int offset = editor.getCaretModel().getOffset();
PsiFile file = parentTag.getContainingFile();
PsiElement psiElement = file.findElementAt(offset);
if (psiElement instanceof PsiWhiteSpace && PsiTreeUtil.isAncestor(parentTag, psiElement, false)) {
Document document = editor.getDocument();
XmlTag childTag = parentTag.createChildTag(childDescription.getXmlElementName(), null, null, true);
String text = childTag.getText();
document.insertString(offset, text);
Project project = editor.getProject();
assert project != null;
PsiDocumentManager documentManager = PsiDocumentManager.getInstance(project);
documentManager.commitDocument(document);
PsiElement element = file.findElementAt(offset + 1);
T domElement = DomUtil.findDomElement(element, myChildElementClass);
if (domElement != null) return domElement;
document.deleteString(offset, offset + text.length());
documentManager.commitDocument(document);
}
}
int index = getCollectionIndex(parent, childDescription, editor);
return index < 0
? (T)childDescription.addValue(parent, myChildElementClass)
: (T)childDescription.addValue(parent, myChildElementClass, index);
}
}
return null;
}
private static int getCollectionIndex(final DomElement parent,
final DomCollectionChildDescription childDescription,
final Editor editor) {
int offset = editor.getCaretModel().getOffset();
for (int i = 0; i < childDescription.getValues(parent).size(); i++) {
DomElement element = childDescription.getValues(parent).get(i);
XmlElement xmlElement = element.getXmlElement();
if (xmlElement != null && xmlElement.getTextRange().getStartOffset() >= offset) {
return i;
}
}
return -1;
}
}
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