/*
* Copyright 2010 The WicketForge-Team
*
* 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 wicketforge.completion;
import com.intellij.codeInsight.completion.CompletionContributor;
import com.intellij.codeInsight.completion.CompletionParameters;
import com.intellij.codeInsight.completion.CompletionResultSet;
import com.intellij.codeInsight.lookup.LookupElementBuilder;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.fileTypes.StdFileTypes;
import com.intellij.psi.*;
import com.intellij.psi.xml.XmlFile;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import wicketforge.Constants;
import wicketforge.psi.hierarchy.HierarchyUtil;
import wicketforge.psi.hierarchy.MarkupWicketIdHierarchy;
import wicketforge.psi.hierarchy.MarkupWicketIdItem;
import wicketforge.search.MarkupIndex;
import wicketforge.util.WicketPsiUtil;
/**
*/
public class ClassWicketIdCompletionContributor extends CompletionContributor {
@Override
public void fillCompletionVariants(final CompletionParameters p, final CompletionResultSet rs) {
ApplicationManager.getApplication().runReadAction(new Runnable() {
@Override
public void run() {
// lets do some basic checks...
PsiFile f = p.getOriginalFile();
if (f.getFileType() == StdFileTypes.JAVA) {
PsiElement psiElement = p.getOriginalPosition();
if (psiElement instanceof PsiJavaToken) {
PsiExpression wicketIdExpression = getWicketIdExpression((PsiJavaToken) psiElement);
if (wicketIdExpression != null) {
PsiCallExpression callExpression = getCallExpression(wicketIdExpression);
if (callExpression != null) {
PsiClass psiClass = WicketPsiUtil.getParentWicketClass(callExpression);
if (psiClass != null) {
PsiFile markup = MarkupIndex.getBaseFile(psiClass);
if (markup != null) {
// ... before we search for our parent Item
String parentPath = HierarchyUtil.findPathOf(psiClass, wicketIdExpression, true, true);
if (parentPath != null) {
MarkupWicketIdItem item = MarkupWicketIdHierarchy.create((XmlFile) markup).getWicketIdPathMap().get(parentPath);
if (item != null) {
for (MarkupWicketIdItem child : item.getChildren()) {
rs.addElement(
LookupElementBuilder.create(child.getWicketId())
//.withIcon(child.getIcon()) // child's icon bother view -> use generic icon
.withIcon(Constants.WICKET_COMPONENT_ICON)
.withTypeText(".html")
.withTailText(" " + child.getLocationString(), true)
);
}
}
}
rs.stopHere();
}
}
}
}
}
}
}
});
}
/**
* @param position
* @return possible candidate for wicketId (psiExpression) of position or null if not matches
*/
@Nullable
private PsiExpression getWicketIdExpression(@NotNull PsiJavaToken position) {
PsiElement element = position.getParent();
if (!(element instanceof PsiLiteralExpression)) {
return null;
}
return element.getParent() instanceof PsiExpressionList ? (PsiExpression) element : null;
}
@Nullable
private PsiCallExpression getCallExpression(@NotNull PsiExpression wicketIdExpression) {
PsiExpressionList expressionList = (PsiExpressionList) wicketIdExpression.getParent();
PsiElement parent = expressionList.getParent();
if (parent instanceof PsiAnonymousClass) {
parent = parent.getParent();
}
if (!(parent instanceof PsiCallExpression)) {
return null;
}
PsiClass classToBeCreated = WicketPsiUtil.getClassToBeCreated((PsiCallExpression) parent);
return classToBeCreated != null && WicketPsiUtil.isWicketComponent(classToBeCreated) ? (PsiCallExpression) parent : null;
}
}