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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.codeInsight.navigation;
import com.intellij.codeInsight.daemon.GutterIconNavigationHandler;
import com.intellij.codeInsight.hint.HintUtil;
import com.intellij.ide.util.PsiElementListCellRenderer;
import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.editor.markup.GutterIconRenderer;
import com.intellij.openapi.ui.popup.Balloon;
import com.intellij.openapi.ui.popup.JBPopup;
import com.intellij.openapi.ui.popup.JBPopupFactory;
import com.intellij.openapi.util.Computable;
import com.intellij.openapi.util.NotNullLazyValue;
import com.intellij.psi.PsiElement;
import com.intellij.psi.SmartPsiElementPointer;
import com.intellij.psi.util.PsiUtilCore;
import com.intellij.ui.IdeBorderFactory;
import com.intellij.ui.awt.RelativePoint;
import com.intellij.util.NullableFunction;
import com.intellij.util.PsiNavigateUtil;
import com.intellij.util.containers.ContainerUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import javax.swing.*;
import java.awt.event.MouseEvent;
import java.util.List;
/**
* @author peter
*/
public abstract class NavigationGutterIconRenderer extends GutterIconRenderer implements GutterIconNavigationHandler<PsiElement>{
private final String myPopupTitle;
private final String myEmptyText;
private final Computable<PsiElementListCellRenderer> myCellRenderer;
private final NotNullLazyValue<List<SmartPsiElementPointer>> myPointers;
protected NavigationGutterIconRenderer(final String popupTitle, final String emptyText, @NotNull Computable<PsiElementListCellRenderer> cellRenderer,
@NotNull NotNullLazyValue<List<SmartPsiElementPointer>> pointers) {
myPopupTitle = popupTitle;
myEmptyText = emptyText;
myCellRenderer = cellRenderer;
myPointers = pointers;
}
@Override
public boolean isNavigateAction() {
return true;
}
public List<PsiElement> getTargetElements() {
return ContainerUtil.mapNotNull(myPointers.getValue(), new NullableFunction<SmartPsiElementPointer, PsiElement>() {
@Override
public PsiElement fun(final SmartPsiElementPointer smartPsiElementPointer) {
return smartPsiElementPointer.getElement();
}
});
}
public boolean equals(final Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
final NavigationGutterIconRenderer renderer = (NavigationGutterIconRenderer)o;
if (myEmptyText != null ? !myEmptyText.equals(renderer.myEmptyText) : renderer.myEmptyText != null) return false;
if (!myPointers.getValue().equals(renderer.myPointers.getValue())) return false;
if (myPopupTitle != null ? !myPopupTitle.equals(renderer.myPopupTitle) : renderer.myPopupTitle != null) return false;
return true;
}
public int hashCode() {
int result;
result = (myPopupTitle != null ? myPopupTitle.hashCode() : 0);
result = 31 * result + (myEmptyText != null ? myEmptyText.hashCode() : 0);
result = 31 * result + myPointers.getValue().hashCode();
return result;
}
@Override
@Nullable
public AnAction getClickAction() {
return new AnAction() {
@Override
public void actionPerformed(AnActionEvent e) {
navigate(e == null ? null : (MouseEvent)e.getInputEvent(), null);
}
};
}
@Override
public void navigate(@Nullable final MouseEvent event, @Nullable final PsiElement elt) {
final List<PsiElement> list = getTargetElements();
if (list.isEmpty()) {
if (myEmptyText != null) {
if (event != null) {
final JComponent label = HintUtil.createErrorLabel(myEmptyText);
label.setBorder(IdeBorderFactory.createEmptyBorder(2, 7, 2, 7));
JBPopupFactory.getInstance().createBalloonBuilder(label)
.setFadeoutTime(3000)
.setFillColor(HintUtil.ERROR_COLOR)
.createBalloon()
.show(new RelativePoint(event), Balloon.Position.above);
}
}
return;
}
if (list.size() == 1) {
PsiNavigateUtil.navigate(list.iterator().next());
}
else {
if (event != null) {
final JBPopup popup = NavigationUtil.getPsiElementPopup(PsiUtilCore.toPsiElementArray(list), myCellRenderer.compute(), myPopupTitle);
popup.show(new RelativePoint(event));
}
}
}
}
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