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/*
* Copyright 2000-2014 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.actionSystem.*;
import com.intellij.openapi.command.CommandProcessor;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.DumbAware;
import com.intellij.openapi.project.DumbService;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.ui.MessageType;
import com.intellij.openapi.ui.popup.Balloon;
import com.intellij.openapi.ui.popup.JBPopupFactory;
import com.intellij.openapi.util.Disposer;
import com.intellij.psi.FileViewProvider;
import com.intellij.psi.PsiDocumentManager;
import com.intellij.psi.PsiFile;
import com.intellij.util.containers.HashSet;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.Collection;
import java.util.Set;
/**
* @author Rustam Vishnyakov
*/
public class GotoCustomRegionAction extends AnAction implements DumbAware, PopupAction {
@Override
public void actionPerformed(final AnActionEvent e) {
final Project project = e.getProject();
final Editor editor = e.getData(CommonDataKeys.EDITOR);
if (Boolean.TRUE.equals(e.getData(PlatformDataKeys.IS_MODAL_CONTEXT))) {
return;
}
if (project != null && editor != null) {
if (DumbService.getInstance(project).isDumb()) {
DumbService.getInstance(project).showDumbModeNotification(IdeBundle.message("goto.custom.region.message.dumb.mode"));
return;
}
CommandProcessor processor = CommandProcessor.getInstance();
processor.executeCommand(
project,
new Runnable() {
@Override
public void run() {
Collection<FoldingDescriptor> foldingDescriptors = getCustomFoldingDescriptors(editor, project);
if (foldingDescriptors.size() > 0) {
CustomFoldingRegionsPopup regionsPopup = new CustomFoldingRegionsPopup(foldingDescriptors, editor, project);
regionsPopup.show();
}
else {
notifyCustomRegionsUnavailable(editor, project);
}
}
},
IdeBundle.message("goto.custom.region.command"),
null);
}
}
@Override
public void update(AnActionEvent e) {
Presentation presentation = e.getPresentation();
presentation.setText(IdeBundle.message("goto.custom.region.menu.item"));
final Editor editor = e.getData(CommonDataKeys.EDITOR);
final Project project = e.getProject();
boolean isAvailable = editor != null && project != null;
presentation.setEnabled(isAvailable);
presentation.setVisible(isAvailable);
}
@NotNull
private static Collection<FoldingDescriptor> getCustomFoldingDescriptors(@NotNull Editor editor, @NotNull Project project) {
Set<FoldingDescriptor> foldingDescriptors = new HashSet<FoldingDescriptor>();
final Document document = editor.getDocument();
PsiDocumentManager documentManager = PsiDocumentManager.getInstance(project);
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;
}
@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 void notifyCustomRegionsUnavailable(@NotNull Editor editor, @NotNull Project project) {
final JBPopupFactory popupFactory = JBPopupFactory.getInstance();
Balloon balloon = popupFactory
.createHtmlTextBalloonBuilder(IdeBundle.message("goto.custom.region.message.unavailable"), MessageType.INFO, null)
.setFadeoutTime(2000)
.setHideOnClickOutside(true)
.setHideOnKeyOutside(true)
.createBalloon();
Disposer.register(project, balloon);
balloon.show(popupFactory.guessBestPopupLocation(editor), Balloon.Position.above);
}
}
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