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/*
* Copyright 2000-2009 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.ide.util;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import javax.swing.table.TableCellRenderer;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Map;
/**
* @see ChooseElementsDialog
*/
public class ElementsChooser<T> extends MultiStateElementsChooser<T, Boolean> {
private static final BooleanMarkStateDescriptor MARK_STATE_DESCRIPTOR = new BooleanMarkStateDescriptor();
public interface ElementsMarkListener<T> {
void elementMarkChanged(T element, boolean isMarked);
}
public ElementsChooser(final boolean elementsCanBeMarked) {
super(elementsCanBeMarked, ElementsChooser.<T>getMarkStateDescriptor());
}
public ElementsChooser(List<T> elements, boolean marked) {
super(elements, marked, ElementsChooser.<T>getMarkStateDescriptor());
}
public void addElementsMarkListener(ElementsMarkListener<T> listener) {
addElementsMarkListener(new ElementsMarkStateListenerAdapter<T>(listener));
}
public void removeElementsMarkListener(ElementsMarkListener<T> listener) {
removeElementsMarkListener(new ElementsMarkStateListenerAdapter<T>(listener));
}
public void addElement(T element, final boolean isMarked) {
addElement(element, getMarkState(isMarked));
}
/**
* Check if element is marked
*
* @param element an element to test
* @return true if element is marked
*/
public boolean isElementMarked(T element) {
return getElementMarkState(element);
}
/**
* Update element mark
*
* @param element an element to test
* @param marked a new value of mark.
*/
public void setElementMarked(T element, boolean marked) {
setElementMarkState(element, getMarkState(marked));
}
public void addElement(T element, final boolean isMarked, ElementProperties elementProperties) {
addElement(element, getMarkState(isMarked), elementProperties);
}
public void setElements(List<T> elements, boolean marked) {
setElements(elements, getMarkState(marked));
}
public void markElements(Collection<T> elements) {
markElements(elements, Boolean.TRUE);
}
@NotNull
public List<T> getMarkedElements() {
Map<T, Boolean> elementMarkStates = getElementMarkStates();
List<T> elements = new ArrayList<T>();
for (Map.Entry<T, Boolean> entry : elementMarkStates.entrySet()) {
if (entry.getValue()) {
elements.add(entry.getKey());
}
}
return elements;
}
public void invertSelection() {
final int count = getElementCount();
for (int i = 0; i < count; i++) {
T type = getElementAt(i);
setElementMarked(type, !isElementMarked(type));
}
}
public void setAllElementsMarked(boolean marked) {
setAllElementsMarked(getMarkState(marked));
}
private static Boolean getMarkState(boolean marked) {
return marked;
}
@SuppressWarnings("unchecked")
private static <T> MarkStateDescriptor<T, Boolean> getMarkStateDescriptor() {
return MARK_STATE_DESCRIPTOR;
}
private static class BooleanMarkStateDescriptor<T> implements MarkStateDescriptor<T, Boolean> {
@NotNull
@Override
public Boolean getDefaultState(@NotNull T element) {
return Boolean.FALSE;
}
@NotNull
@Override
public Boolean getNextState(@NotNull T element, @NotNull Boolean state) {
return !state;
}
@Nullable
@Override
public Boolean getNextState(@NotNull Map<T, Boolean> elementsWithStates) {
boolean currentlyMarked = true;
for (Boolean state : elementsWithStates.values()) {
currentlyMarked = state;
if (!currentlyMarked) {
break;
}
}
return !currentlyMarked;
}
@Override
public boolean isMarked(@NotNull Boolean state) {
return state;
}
@Nullable
@Override
public Boolean getMarkState(@Nullable Object value) {
return value instanceof Boolean ? ((Boolean)value) : null;
}
@Nullable
@Override
public TableCellRenderer getMarkRenderer() {
return null;
}
}
private static class ElementsMarkStateListenerAdapter<T> implements ElementsMarkStateListener<T, Boolean> {
private final ElementsMarkListener<T> myListener;
public ElementsMarkStateListenerAdapter(ElementsMarkListener<T> listener) {
myListener = listener;
}
@Override
public void elementMarkChanged(T element, Boolean markState) {
myListener.elementMarkChanged(element, markState);
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
ElementsMarkStateListenerAdapter that = (ElementsMarkStateListenerAdapter)o;
if (!myListener.equals(that.myListener)) return false;
return true;
}
@Override
public int hashCode() {
return myListener.hashCode();
}
}
}
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