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/*
* Copyright 2000-2009 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.navigation;
import com.intellij.codeInsight.CodeInsightBundle;
import com.intellij.codeInsight.TargetElementUtilBase;
import com.intellij.ide.util.PsiElementListCellRenderer;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.progress.ProgressIndicator;
import com.intellij.openapi.project.Project;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.PsiNamedElement;
import com.intellij.psi.PsiReference;
import com.intellij.util.containers.HashMap;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
public class GotoImplementationHandler extends GotoTargetHandler {
@Override
protected String getFeatureUsedKey() {
return "navigation.goto.implementation";
}
@Override
@Nullable
public GotoData getSourceAndTargetElements(Editor editor, PsiFile file) {
int offset = editor.getCaretModel().getOffset();
PsiElement source = TargetElementUtilBase.getInstance().findTargetElement(editor, ImplementationSearcher.getFlags(), offset);
if (source == null) return null;
final GotoData gotoData;
final PsiReference reference = TargetElementUtilBase.findReference(editor, offset);
final TargetElementUtilBase instance = TargetElementUtilBase.getInstance();
if (!ApplicationManager.getApplication().isUnitTestMode()) {
gotoData = new GotoData(source, new ImplementationSearcher.FirstImplementationsSearcher(){
@Override
protected boolean accept(PsiElement element) {
return instance.acceptImplementationForReference(reference, element);
}
@Override
protected boolean canShowPopupWithOneItem(PsiElement element) {
return false;
}
}.searchImplementations(editor, source, offset), Collections.<AdditionalAction>emptyList());
gotoData.listUpdaterTask = new ImplementationsUpdaterTask(gotoData, editor, offset, reference);
} else {
gotoData = new GotoData(source, new ImplementationSearcher(){
@Override
protected PsiElement[] filterElements(PsiElement element, PsiElement[] targetElements, int offset) {
final List<PsiElement> result = new ArrayList<PsiElement>();
for (PsiElement targetElement : targetElements) {
if (instance.acceptImplementationForReference(reference, targetElement)) {
result.add(targetElement);
}
}
return result.toArray(new PsiElement[result.size()]);
}
}.searchImplementations(editor, source, offset),
Collections.<AdditionalAction>emptyList());
}
return gotoData;
}
@Override
protected String getChooserTitle(PsiElement sourceElement, String name, int length) {
return CodeInsightBundle.message("goto.implementation.chooserTitle", name, length);
}
@Override
protected String getFindUsagesTitle(PsiElement sourceElement, String name, int length) {
return CodeInsightBundle.message("goto.implementation.findUsages.title", name, length);
}
@Override
protected String getNotFoundMessage(Project project, Editor editor, PsiFile file) {
return CodeInsightBundle.message("goto.implementation.notFound");
}
private class ImplementationsUpdaterTask extends ListBackgroundUpdaterTask {
private final Editor myEditor;
private final int myOffset;
private final GotoData myGotoData;
private final Map<Object, PsiElementListCellRenderer> renderers = new HashMap<Object, PsiElementListCellRenderer>();
private final PsiReference myReference;
public ImplementationsUpdaterTask(GotoData gotoData, Editor editor, int offset, final PsiReference reference) {
super(gotoData.source.getProject(), ImplementationSearcher.SEARCHING_FOR_IMPLEMENTATIONS);
myEditor = editor;
myOffset = offset;
myGotoData = gotoData;
myReference = reference;
}
@Override
public void run(@NotNull final ProgressIndicator indicator) {
super.run(indicator);
for (PsiElement element : myGotoData.targets) {
if (!updateComponent(element, createComparator(renderers, myGotoData))) {
return;
}
}
new ImplementationSearcher.BackgroundableImplementationSearcher() {
@Override
protected void processElement(PsiElement element) {
indicator.checkCanceled();
if (!TargetElementUtilBase.getInstance().acceptImplementationForReference(myReference, element)) return;
if (myGotoData.addTarget(element)) {
if (!updateComponent(element, createComparator(renderers, myGotoData))) {
indicator.cancel();
}
}
}
}.searchImplementations(myEditor, myGotoData.source, myOffset);
}
@Override
public String getCaption(int size) {
return getChooserTitle(myGotoData.source, ((PsiNamedElement)myGotoData.source).getName(), size);
}
}
}
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