/*
* Copyright 2000-2015 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.daemon;
import com.intellij.openapi.editor.markup.GutterIconRenderer;
import com.intellij.openapi.ui.popup.JBPopupFactory;
import com.intellij.openapi.ui.popup.PopupChooserBuilder;
import com.intellij.openapi.util.TextRange;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.psi.PsiElement;
import com.intellij.ui.IdeBorderFactory;
import com.intellij.ui.awt.RelativePoint;
import com.intellij.ui.components.JBLabel;
import com.intellij.ui.components.JBList;
import com.intellij.util.Function;
import com.intellij.util.NotNullFunction;
import com.intellij.util.SmartList;
import com.intellij.util.ui.UIUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import javax.swing.*;
import java.awt.event.MouseEvent;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
/**
* @author Konstantin Bulenkov
*/
public abstract class MergeableLineMarkerInfo<T extends PsiElement> extends LineMarkerInfo<T> {
public MergeableLineMarkerInfo(@NotNull T element,
@NotNull TextRange textRange,
Icon icon,
int updatePass,
@Nullable Function<? super T, String> tooltipProvider,
@Nullable GutterIconNavigationHandler<T> navHandler,
@NotNull GutterIconRenderer.Alignment alignment) {
super(element, textRange, icon, updatePass, tooltipProvider, navHandler, alignment);
}
public abstract boolean canMergeWith(@NotNull MergeableLineMarkerInfo<?> info);
public abstract Icon getCommonIcon(@NotNull List<MergeableLineMarkerInfo> infos);
@NotNull
public abstract Function<? super PsiElement, String> getCommonTooltip(@NotNull List<MergeableLineMarkerInfo> infos);
public GutterIconRenderer.Alignment getCommonIconAlignment(@NotNull List<MergeableLineMarkerInfo> infos) {
return GutterIconRenderer.Alignment.LEFT;
}
public String getElementPresentation(PsiElement element) {
return element.getText();
}
public int getCommonUpdatePass(@NotNull List<MergeableLineMarkerInfo> infos) {
return updatePass;
}
public boolean configurePopupAndRenderer(@NotNull PopupChooserBuilder builder,
@NotNull JBList list,
@NotNull List<MergeableLineMarkerInfo> markers) {
return false;
}
@NotNull
public static List<LineMarkerInfo> merge(@NotNull List<MergeableLineMarkerInfo> markers) {
List<LineMarkerInfo> result = new SmartList<>();
for (int i = 0; i < markers.size(); i++) {
MergeableLineMarkerInfo marker = markers.get(i);
List<MergeableLineMarkerInfo> toMerge = new SmartList<>();
for (int k = markers.size() - 1; k > i; k--) {
MergeableLineMarkerInfo current = markers.get(k);
if (marker.canMergeWith(current)) {
toMerge.add(0, current);
markers.remove(k);
}
}
if (toMerge.isEmpty()) {
result.add(marker);
}
else {
toMerge.add(0, marker);
result.add(new MyLineMarkerInfo(toMerge));
}
}
return result;
}
private static class MyLineMarkerInfo extends LineMarkerInfo<PsiElement> {
private MyLineMarkerInfo(@NotNull List<MergeableLineMarkerInfo> markers) {
this(markers, markers.get(0));
}
private MyLineMarkerInfo(@NotNull List<MergeableLineMarkerInfo> markers, @NotNull MergeableLineMarkerInfo template) {
//noinspection ConstantConditions
super(template.getElement(),
getCommonTextRange(markers),
template.getCommonIcon(markers),
template.getCommonUpdatePass(markers),
template.getCommonTooltip(markers),
getCommonNavigationHandler(markers),
template.getCommonIconAlignment(markers));
}
private static TextRange getCommonTextRange(List<MergeableLineMarkerInfo> markers) {
int startOffset = Integer.MAX_VALUE;
int endOffset = Integer.MIN_VALUE;
for (MergeableLineMarkerInfo marker : markers) {
startOffset = Math.min(startOffset, marker.startOffset);
endOffset = Math.max(endOffset, marker.endOffset);
}
return TextRange.create(startOffset, endOffset);
}
private static GutterIconNavigationHandler<PsiElement> getCommonNavigationHandler(@NotNull final List<MergeableLineMarkerInfo> markers) {
return new GutterIconNavigationHandler<PsiElement>() {
@Override
public void navigate(final MouseEvent e, PsiElement elt) {
final List<LineMarkerInfo> infos = new ArrayList<>(markers);
Collections.sort(infos, (o1, o2) -> o1.startOffset - o2.startOffset);
final JBList list = new JBList(infos);
list.setFixedCellHeight(UIUtil.LIST_FIXED_CELL_HEIGHT);
PopupChooserBuilder builder = JBPopupFactory.getInstance().createListPopupBuilder(list);
if (!markers.get(0).configurePopupAndRenderer(builder, list, infos)) {
list.installCellRenderer(dom -> {
if (dom instanceof LineMarkerInfo) {
Icon icon = null;
final GutterIconRenderer renderer = ((LineMarkerInfo)dom).createGutterRenderer();
if (renderer != null) {
icon = renderer.getIcon();
}
PsiElement element = ((LineMarkerInfo)dom).getElement();
assert element != null;
final String elementPresentation =
dom instanceof MergeableLineMarkerInfo ? ((MergeableLineMarkerInfo)dom).getElementPresentation(element) : element.getText();
String text = StringUtil.first(elementPresentation, 100, true).replace('\n', ' ');
final JBLabel label = new JBLabel(text, icon, SwingConstants.LEFT);
label.setBorder(IdeBorderFactory.createEmptyBorder(2));
return label;
}
return new JBLabel();
});
}
builder.setItemChoosenCallback(() -> {
final Object value = list.getSelectedValue();
if (value instanceof LineMarkerInfo) {
final GutterIconNavigationHandler handler = ((LineMarkerInfo)value).getNavigationHandler();
if (handler != null) {
//noinspection unchecked
handler.navigate(e, ((LineMarkerInfo)value).getElement());
}
}
}).createPopup().show(new RelativePoint(e));
}
};
}
}
}