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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.folding.FoldingDescriptor;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.ScrollType;
import com.intellij.openapi.fileEditor.ex.IdeDocumentHistory;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.ui.popup.JBPopup;
import com.intellij.openapi.ui.popup.JBPopupFactory;
import com.intellij.openapi.ui.popup.PopupChooserBuilder;
import com.intellij.psi.PsiElement;
import com.intellij.ui.components.JBList;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import javax.swing.*;
import java.util.*;
/**
* @author Rustam Vishnyakov
*/
public class CustomFoldingRegionsPopup {
private final @NotNull JBList myRegionsList;
private final @NotNull JBPopup myPopup;
private final @NotNull Editor myEditor;
CustomFoldingRegionsPopup(@NotNull Collection<FoldingDescriptor> descriptors,
@NotNull final Editor editor,
@NotNull final Project project) {
myEditor = editor;
myRegionsList = new JBList();
//noinspection unchecked
myRegionsList.setModel(new MyListModel(orderByPosition(descriptors)));
myRegionsList.setSelectedIndex(0);
final PopupChooserBuilder popupBuilder = JBPopupFactory.getInstance().createListPopupBuilder(myRegionsList);
myPopup = popupBuilder
.setTitle(IdeBundle.message("goto.custom.region.command"))
.setResizable(false)
.setMovable(false)
.setItemChoosenCallback(new Runnable() {
@Override
public void run() {
PsiElement navigationElement = getNavigationElement();
if (navigationElement != null) {
navigateTo(editor, navigationElement);
IdeDocumentHistory.getInstance(project).includeCurrentCommandAsNavigation();
}
}
}).createPopup();
}
void show() {
myPopup.showInBestPositionFor(myEditor);
}
private static class MyListModel extends DefaultListModel {
private MyListModel(Collection<FoldingDescriptor> descriptors) {
for (FoldingDescriptor descriptor : descriptors) {
//noinspection unchecked
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;
}
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 static void navigateTo(@NotNull Editor editor, @NotNull PsiElement element) {
int offset = element.getTextRange().getStartOffset();
if (offset >= 0 && offset < editor.getDocument().getTextLength()) {
editor.getCaretModel().removeSecondaryCarets();
editor.getCaretModel().moveToOffset(offset);
editor.getScrollingModel().scrollToCaret(ScrollType.CENTER);
editor.getSelectionModel().removeSelection();
}
}
}
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