com.intellij.codeInsight.navigation.JavaGotoSuperHandler.java Source code

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Here is the source code for com.intellij.codeInsight.navigation.JavaGotoSuperHandler.java

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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.CodeInsightActionHandler;
import com.intellij.codeInsight.CodeInsightBundle;
import com.intellij.codeInsight.daemon.impl.PsiElementListNavigator;
import com.intellij.codeInsight.navigation.actions.GotoSuperAction;
import com.intellij.featureStatistics.FeatureUsageTracker;
import com.intellij.ide.util.MethodCellRenderer;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.fileEditor.FileEditorManager;
import com.intellij.openapi.fileEditor.OpenFileDescriptor;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.*;
import com.intellij.psi.impl.FindSuperElementsHelper;
import com.intellij.psi.util.PsiTreeUtil;
import com.intellij.psi.util.PsiUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

public class JavaGotoSuperHandler implements CodeInsightActionHandler {
    @Override
    public void invoke(@NotNull final Project project, @NotNull final Editor editor, @NotNull final PsiFile file) {
        FeatureUsageTracker.getInstance().triggerFeatureUsed(GotoSuperAction.FEATURE_ID);

        int offset = editor.getCaretModel().getOffset();
        PsiElement[] superElements = findSuperElements(file, offset);
        if (superElements == null || superElements.length == 0)
            return;
        if (superElements.length == 1) {
            PsiElement superElement = superElements[0].getNavigationElement();
            final PsiFile containingFile = superElement.getContainingFile();
            if (containingFile == null)
                return;
            final VirtualFile virtualFile = containingFile.getVirtualFile();
            if (virtualFile == null)
                return;
            OpenFileDescriptor descriptor = new OpenFileDescriptor(project, virtualFile,
                    superElement.getTextOffset());
            FileEditorManager.getInstance(project).openTextEditor(descriptor, true);
        } else {
            if (superElements[0] instanceof PsiMethod) {
                boolean showMethodNames = !PsiUtil.allMethodsHaveSameSignature((PsiMethod[]) superElements);
                PsiElementListNavigator
                        .openTargets(editor, (PsiMethod[]) superElements,
                                CodeInsightBundle.message("goto.super.method.chooser.title"),
                                CodeInsightBundle.message("goto.super.method.findUsages.title",
                                        ((PsiMethod) superElements[0]).getName()),
                                new MethodCellRenderer(showMethodNames));
            } else {
                NavigationUtil
                        .getPsiElementPopup(superElements,
                                CodeInsightBundle.message("goto.super.class.chooser.title"))
                        .showInBestPositionFor(editor);
            }
        }
    }

    @Nullable
    private PsiElement[] findSuperElements(PsiFile file, int offset) {
        PsiNameIdentifierOwner parent = getElement(file, offset);
        if (parent == null)
            return null;

        return FindSuperElementsHelper.findSuperElements(parent);
    }

    protected PsiNameIdentifierOwner getElement(PsiFile file, int offset) {
        PsiElement element = file.findElementAt(offset);
        if (element == null)
            return null;

        PsiNameIdentifierOwner parent = PsiTreeUtil.getParentOfType(element, PsiMethod.class, PsiClass.class);
        if (parent == null)
            return null;
        return parent;
    }

    @Override
    public boolean startInWriteAction() {
        return false;
    }

}