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/*
* Copyright 2000-2012 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.lang.customFolding;
import com.intellij.ide.IdeBundle;
import com.intellij.lang.Language;
import com.intellij.lang.folding.*;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.ui.DialogWrapper;
import com.intellij.psi.FileViewProvider;
import com.intellij.psi.PsiDocumentManager;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.ui.components.JBList;
import com.intellij.ui.components.JBScrollPane;
import com.intellij.util.containers.HashSet;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import javax.swing.*;
import java.awt.*;
import java.util.*;
import java.util.List;
/**
* @author Rustam Vishnyakov
*/
public class GotoCustomRegionDialog extends DialogWrapper {
private JBList myRegionsList;
private JPanel myContentPane;
private JBScrollPane myScrollPane;
private final Editor myEditor;
private final Project myProject;
protected GotoCustomRegionDialog(@Nullable Project project, @NotNull Editor editor) {
super(project);
myEditor = editor;
myProject = project;
Collection<FoldingDescriptor> descriptors = getCustomFoldingDescriptors();
init();
if (descriptors.size() == 0) {
myScrollPane.setVisible(false);
myContentPane.add(new JLabel(IdeBundle.message("goto.custom.region.message.unavailable")), BorderLayout.NORTH);
setOKActionEnabled(false);
}
else {
myRegionsList.setModel(new MyListModel(orderByPosition(descriptors)));
myRegionsList.setSelectedIndex(0);
}
setTitle(IdeBundle.message("goto.custom.region.command"));
}
@Override
public JComponent getPreferredFocusedComponent() {
if (!myRegionsList.isEmpty()) {
return myRegionsList;
}
return super.getPreferredFocusedComponent();
}
@Override
protected JComponent createCenterPanel() {
return myContentPane;
}
private Collection<FoldingDescriptor> getCustomFoldingDescriptors() {
Set<FoldingDescriptor> foldingDescriptors = new HashSet<FoldingDescriptor>();
final Document document = myEditor.getDocument();
PsiDocumentManager documentManager = PsiDocumentManager.getInstance(myProject);
PsiFile file = documentManager != null ? documentManager.getPsiFile(document) : null;
if (file != null) {
final FileViewProvider viewProvider = file.getViewProvider();
for (final Language language : viewProvider.getLanguages()) {
final PsiFile psi = viewProvider.getPsi(language);
final FoldingBuilder foldingBuilder = LanguageFolding.INSTANCE.forLanguage(language);
if (psi != null) {
for (FoldingDescriptor descriptor : LanguageFolding.buildFoldingDescriptors(foldingBuilder, psi, document, false)) {
CustomFoldingBuilder customFoldingBuilder = getCustomFoldingBuilder(foldingBuilder, descriptor);
if (customFoldingBuilder != null) {
if (customFoldingBuilder.isCustomRegionStart(descriptor.getElement())) {
foldingDescriptors.add(descriptor);
}
}
}
}
}
}
return foldingDescriptors;
}
private static Collection<FoldingDescriptor> orderByPosition(Collection<FoldingDescriptor> descriptors) {
List<FoldingDescriptor> sorted = new ArrayList<FoldingDescriptor>(descriptors.size());
sorted.addAll(descriptors);
Collections.sort(sorted, new Comparator<FoldingDescriptor>() {
@Override
public int compare(FoldingDescriptor descriptor1, FoldingDescriptor descriptor2) {
int pos1 = descriptor1.getElement().getTextRange().getStartOffset();
int pos2 = descriptor2.getElement().getTextRange().getStartOffset();
return pos1 - pos2;
}
});
return sorted;
}
private void createUIComponents() {
myRegionsList = new JBList();
myScrollPane = new JBScrollPane(myRegionsList);
}
@Nullable
private static CustomFoldingBuilder getCustomFoldingBuilder(FoldingBuilder builder, FoldingDescriptor descriptor) {
if (builder instanceof CustomFoldingBuilder) return (CustomFoldingBuilder)builder;
FoldingBuilder originalBuilder = descriptor.getElement().getUserData(CompositeFoldingBuilder.FOLDING_BUILDER);
if (originalBuilder instanceof CustomFoldingBuilder) return (CustomFoldingBuilder)originalBuilder;
return null;
}
private static class MyListModel extends DefaultListModel {
private MyListModel(Collection<FoldingDescriptor> descriptors) {
for (FoldingDescriptor descriptor : descriptors) {
super.addElement(new MyFoldingDescriptorWrapper(descriptor));
}
}
}
private static class MyFoldingDescriptorWrapper {
private final @NotNull FoldingDescriptor myDescriptor;
private MyFoldingDescriptorWrapper(@NotNull FoldingDescriptor descriptor) {
myDescriptor = descriptor;
}
@NotNull
public FoldingDescriptor getDescriptor() {
return myDescriptor;
}
@Nullable
@Override
public String toString() {
return myDescriptor.getPlaceholderText();
}
}
@Nullable
public PsiElement getNavigationElement() {
Object selection = myRegionsList.getSelectedValue();
if (selection instanceof MyFoldingDescriptorWrapper) {
return ((MyFoldingDescriptorWrapper)selection).getDescriptor().getElement().getPsi();
}
return null;
}
}
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