Plex-FAWE/src/WorldEditSession.java

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// $Id$
/*
* WorldEdit
* Copyright (C) 2010 sk89q <http://www.sk89q.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import com.sk89q.worldedit.*;
import java.util.LinkedList;
/**
*
* @author sk89q
*/
public class WorldEditSession {
public static final int MAX_HISTORY_SIZE = 15;
private int[] pos1 = new int[3];
private int[] pos2 = new int[3];
private boolean hasSetPos1 = false;
private boolean hasSetPos2 = false;
private LinkedList<EditSession> history = new LinkedList<EditSession>();
private int historyPointer = 0;
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private RegionClipboard clipboard;
/**
* Clear history.
*/
public void clearHistory() {
history.clear();
historyPointer = 0;
}
/**
* Get the edit session.
*
* @return
*/
public void remember(EditSession editSession) {
// Don't store anything if no changes were made
if (editSession.size() == 0) { return; }
// Destroy any sessions after this undo point
while (historyPointer < history.size()) {
history.remove(historyPointer);
}
history.add(editSession);
while (history.size() > MAX_HISTORY_SIZE) {
history.remove(0);
}
historyPointer = history.size();
}
/**
* Undo.
*
* @return whether anything was undoed
*/
public boolean undo() {
historyPointer--;
if (historyPointer >= 0) {
history.get(historyPointer).undo();
return true;
} else {
historyPointer = 0;
return false;
}
}
/**
* Redo.
*
* @return whether anything was redoed
*/
public boolean redo() {
if (historyPointer < history.size()) {
history.get(historyPointer).redo();
historyPointer++;
return true;
}
return false;
}
private void checkPos1() throws IncompleteRegionException {
if (!hasSetPos1) {
throw new IncompleteRegionException();
}
}
private void checkPos2() throws IncompleteRegionException {
if (!hasSetPos2) {
throw new IncompleteRegionException();
}
}
public int[] getPos1() throws IncompleteRegionException {
checkPos1();
return pos1;
}
public void setPos1(int x, int y, int z) {
hasSetPos1 = true;
pos1 = new int[]{x, y, z};
}
public int[] getPos2() throws IncompleteRegionException {
checkPos2();
return pos2;
}
public void setPos2(int x, int y, int z) {
hasSetPos2 = true;
pos2 = new int[]{x, y, z};
}
public int getLowerX() throws IncompleteRegionException {
checkPos1();
checkPos2();
return Math.min(pos1[0], pos2[0]);
}
public int getUpperX() throws IncompleteRegionException {
checkPos1();
checkPos2();
return Math.max(pos1[0], pos2[0]);
}
public int getLowerY() throws IncompleteRegionException {
checkPos1();
checkPos2();
return Math.min(pos1[1], pos2[1]);
}
public int getUpperY() throws IncompleteRegionException {
checkPos1();
checkPos2();
return Math.max(pos1[1], pos2[1]);
}
public int getLowerZ() throws IncompleteRegionException {
checkPos1();
checkPos2();
return Math.min(pos1[2], pos2[2]);
}
public int getUpperZ() throws IncompleteRegionException {
checkPos1();
checkPos2();
return Math.max(pos1[2], pos2[2]);
}
public int getSize() throws IncompleteRegionException {
return (getUpperX() - getLowerX() + 1) *
(getUpperY() - getLowerY() + 1) *
(getUpperZ() - getLowerZ() + 1);
}
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/**
* @return
*/
public RegionClipboard getClipboard() {
return clipboard;
}
/**
* @param clipboard
*/
public void setClipboard(RegionClipboard clipboard) {
this.clipboard = clipboard;
}
}