/*
* Copyright 2000-2016 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.ContainerProvider;
import com.intellij.ide.util.PsiElementListCellRenderer;
import com.intellij.navigation.ItemPresentation;
import com.intellij.navigation.NavigationItem;
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 consulo.codeInsight.TargetElementUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.Collections;
import java.util.Map;
public class GotoImplementationHandler extends GotoTargetHandler {
@Override
protected String getFeatureUsedKey() {
return "navigation.goto.implementation";
}
@Override
@Nullable
public GotoData getSourceAndTargetElements(@NotNull Editor editor, PsiFile file) {
int offset = editor.getCaretModel().getOffset();
PsiElement source = TargetElementUtil.findTargetElement(editor, ImplementationSearcher.getFlags(), offset);
if (source == null) return null;
final PsiReference reference = TargetElementUtil.findReference(editor, offset);
PsiElement[] targets = new ImplementationSearcher.FirstImplementationsSearcher() {
@Override
protected boolean accept(PsiElement element) {
return TargetElementUtil.acceptImplementationForReference(reference, element);
}
@Override
protected boolean canShowPopupWithOneItem(PsiElement element) {
return false;
}
}.searchImplementations(editor, source, offset);
if (targets == null) return null;
GotoData gotoData = new GotoData(source, targets, Collections.emptyList());
gotoData.listUpdaterTask = new ImplementationsUpdaterTask(gotoData, editor, offset, reference) {
@Override
public void onFinished() {
super.onFinished();
PsiElement oneElement = getTheOnlyOneElement();
if (oneElement != null && navigateToElement(oneElement)) {
myPopup.cancel();
}
}
};
return gotoData;
}
private static PsiElement getContainer(PsiElement refElement) {
for (ContainerProvider provider : ContainerProvider.EP_NAME.getExtensions()) {
final PsiElement container = provider.getContainer(refElement);
if (container != null) return container;
}
return refElement.getParent();
}
@Override
@NotNull
protected String getChooserTitle(@NotNull PsiElement sourceElement, String name, int length, boolean finished) {
ItemPresentation presentation = ((NavigationItem)sourceElement).getPresentation();
String fullName;
if (presentation == null) {
fullName = name;
}
else {
PsiElement container = getContainer(sourceElement);
ItemPresentation containerPresentation = container == null || container instanceof PsiFile ? null : ((NavigationItem)container).getPresentation();
String containerText = containerPresentation == null ? null : containerPresentation.getPresentableText();
fullName = (containerText == null ? "" : containerText+".") + presentation.getPresentableText();
}
return CodeInsightBundle.message("goto.implementation.chooserTitle", fullName, length, finished ? "" : " so far");
}
@NotNull
@Override
protected String getFindUsagesTitle(@NotNull PsiElement sourceElement, String name, int length) {
return CodeInsightBundle.message("goto.implementation.findUsages.title", name, length);
}
@NotNull
@Override
protected String getNotFoundMessage(@NotNull Project project, @NotNull Editor editor, @NotNull 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<>();
private final PsiReference myReference;
ImplementationsUpdaterTask(@NotNull GotoData gotoData, @NotNull 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 (!TargetElementUtil.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, isFinished());
}
}
}