gvsig-vectorediting / org.gvsig.vectorediting / trunk / org.gvsig.vectorediting / org.gvsig.vectorediting.swing / org.gvsig.vectorediting.swing.impl / src / main / java / org / gvsig / vectorediting / swing / impl / EditingContextSymbolTable.java @ 2203
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/*
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2020 gvSIG Association.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 3
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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* For any additional information, do not hesitate to contact us
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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package org.gvsig.vectorediting.swing.impl; |
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import java.util.ArrayList; |
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import java.util.Collection; |
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import java.util.Collections; |
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import java.util.List; |
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import org.apache.commons.lang3.StringUtils; |
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import org.gvsig.expressionevaluator.spi.AbstractSymbolTable; |
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import org.gvsig.fmap.geom.Geometry; |
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import org.gvsig.fmap.geom.primitive.Point; |
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import org.gvsig.temporarystorage.TemporaryStorageGroup; |
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import org.gvsig.temporarystorage.TemporaryStorageLocator; |
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import org.gvsig.temporarystorage.TemporaryStorageManager; |
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/**
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*
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* @author gvSIG Team
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*/
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public class EditingContextSymbolTable extends AbstractSymbolTable { |
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private static class ListWithMaximumSize<T> extends ArrayList<T> { |
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private final int maximumSize; |
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public ListWithMaximumSize(int maximumSize) { |
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this.maximumSize = maximumSize;
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} |
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@Override
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public boolean add(T e) { |
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if( this.size()>this.maximumSize ) { |
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this.remove(0); |
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} |
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return super.add(e); |
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} |
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@Override
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public void add(int index, T element) { |
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if( this.size()>this.maximumSize ) { |
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this.remove(0); |
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} |
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super.add(index, element);
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} |
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} |
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private final List<Point> lastPoints; |
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private final TemporaryStorageGroup globalPointsStorage; |
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public EditingContextSymbolTable() {
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this.lastPoints = new ListWithMaximumSize(100); |
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TemporaryStorageManager manager = TemporaryStorageLocator.getTemporaryStorageManager(); |
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this.globalPointsStorage = manager.create("Points",Point.class); |
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} |
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public void addPoint(Point point) { |
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this.lastPoints.add(point);
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} |
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@Override
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public boolean exists(String name) { |
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if( globalPointsStorage.contains(name) ) {
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return true; |
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} |
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if( globalPointsStorage.contains(name+"$x") ) { |
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return true; |
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} |
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if( globalPointsStorage.contains(name+"$y") ) { |
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return true; |
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} |
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if( this.lastPoints.isEmpty() || StringUtils.isBlank(name) ) { |
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return false; |
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} |
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name = name.toLowerCase(); |
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int index = -1; |
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if( name.length()==2 ) { |
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index = this.lastPoints.size()-1; |
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} else if( name.length()<3 ) { |
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return false; |
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} else {
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try {
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index = Integer.parseUnsignedInt(name.substring(2)); |
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} catch(NumberFormatException ex) { |
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return false; |
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} |
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} |
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if( index < 0 || index >= this.lastPoints.size() ) { |
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return false; |
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} |
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if( name.startsWith("$p") || name.startsWith("$x") || name.startsWith("$y") ) { |
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return true; |
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} |
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return false; |
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} |
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@Override
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public Object value(String name) { |
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if( globalPointsStorage.contains(name) ) {
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return globalPointsStorage.get(name);
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} |
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if( globalPointsStorage.contains(name+"$x") ) { |
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Point point = (Point) globalPointsStorage.get(name+"$x"); |
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return point.getX();
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} |
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if( globalPointsStorage.contains(name+"$y") ) { |
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Point point = (Point) globalPointsStorage.get(name+"$y"); |
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return point.getY();
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} |
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if( this.lastPoints.isEmpty() || StringUtils.isBlank(name) ) { |
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return null; |
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} |
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name = name.toLowerCase(); |
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int index = -1; |
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if( name.length()==2 ) { |
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index = 0;
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} else if( name.length()<3 ) { |
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return null; |
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} else {
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try {
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index = Integer.parseUnsignedInt(name.substring(2)); |
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} catch(NumberFormatException ex) { |
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return null; |
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} |
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} |
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if( index < 0 || index >= this.lastPoints.size() ) { |
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return false; |
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} |
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// El index 0 es el ultimo en la lista
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index = (this.lastPoints.size() - index) - 1; |
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if( name.startsWith("$p") ) { |
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Point point = this.lastPoints.get(index); |
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return point;
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} |
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if( name.startsWith("$x") ) { |
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Point point = this.lastPoints.get(index); |
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return point.getX();
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} |
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if( name.startsWith("$y") ) { |
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Point point = this.lastPoints.get(index); |
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return point.getY();
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} |
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return null; |
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} |
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@Override
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public Collection<String> localvariables() { |
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if( this.lastPoints.isEmpty() ) { |
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return Collections.EMPTY_LIST; |
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} |
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List<String> names = new ArrayList<>(); |
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names.add("$p");
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names.add("$x");
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names.add("$y");
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for (int i = 0; i < this.lastPoints.size(); i++) { |
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names.add("$p"+i);
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names.add("$x"+i);
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names.add("$y"+i);
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} |
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return names;
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} |
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} |