/platform/vcs-api/src/com/intellij/openapi/vcs/QuantitySelection.java
https://bitbucket.org/nbargnesi/idea · Java · 117 lines · 81 code · 20 blank · 16 comment · 10 complexity · ae5d4c35d00d1b817e844376bb0dfd4a MD5 · raw file
- /*
- * Copyright 2000-2010 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.openapi.vcs;
- import java.util.HashSet;
- import java.util.Set;
- public class QuantitySelection<T> implements SelectionManipulation<T>, SelectionState<T> {
- private final Group<T> mySelected;
- private final Group<T> myUnselected;
- public QuantitySelection(final boolean startFromSelectAll) {
- mySelected = new Group<T>();
- myUnselected = new Group<T>();
- if (startFromSelectAll) {
- mySelected.setAll();
- } else {
- myUnselected.setAll();
- }
- }
- public void add(T t) {
- if (mySelected.isAll()) {
- myUnselected.remove(t);
- } else {
- mySelected.add(t);
- }
- }
- public void remove(T t) {
- if (mySelected.isAll()) {
- myUnselected.add(t);
- } else {
- mySelected.remove(t);
- }
- }
- public void clearAll() {
- mySelected.clearAll();
- myUnselected.setAll();
- }
- public void setAll() {
- myUnselected.clearAll();
- mySelected.setAll();
- }
- public SelectionResult<T> getSelected() {
- return mySelected;
- }
- public SelectionResult<T> getUnselected() {
- return myUnselected;
- }
- public boolean isSelected(final T t) {
- return mySelected.isAll() && (! myUnselected.hasPoint(t)) || myUnselected.isAll() && mySelected.hasPoint(t);
- }
- public static class Group<T> implements SelectionManipulation<T>, SelectionResult<T> {
- private boolean myAll;
- private final Set<T> myMarked;
- private Group() {
- myMarked = new HashSet<T>();
- }
- public void add(final T t) {
- myMarked.add(t);
- }
- // +- consistency check not here
- public void remove(final T t) {
- myAll = false;
- myMarked.remove(t);
- }
- public void clearAll() {
- myAll = false;
- myMarked.clear();
- }
- public void setAll() {
- myAll = true;
- myMarked.clear();
- }
- public Set<T> getMarked() {
- return myMarked;
- }
- public boolean isAll() {
- return myAll;
- }
- public boolean hasPoint(final T t) {
- return myMarked.contains(t);
- }
- public boolean isIncluded(final T t) {
- return myAll || myMarked.contains(t);
- }
- }
- }