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package org.gvsig.fmap.mapcontrol;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Iterator;
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import java.util.List;
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import javax.swing.event.TreeModelEvent;
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import javax.swing.event.TreeModelListener;
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import javax.swing.tree.TreeModel;
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import javax.swing.tree.TreePath;
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import org.apache.commons.lang3.BooleanUtils;
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import org.gvsig.fmap.mapcontext.layers.FLayer;
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import org.gvsig.fmap.mapcontext.layers.FLayers;
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import org.gvsig.tools.evaluator.Evaluator;
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import org.gvsig.tools.evaluator.EvaluatorData;
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public class LayersTreeModel implements TreeModel {
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protected final FLayers layers;
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private final List<TreeModelListener> listeners = new ArrayList();
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protected FLayers layers;
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private Evaluator filter;
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private MyEvaluatorData datafilter;
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protected final List<TreeModelListener> listeners = new ArrayList();
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private static class MyEvaluatorData implements EvaluatorData {
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public LayersTreeModel(FLayers layers) {
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this.layers = layers;
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}
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public FLayer layer = null;
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@Override
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public Object getRoot() {
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return layers;
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public Object getDataValue(String name) {
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if (name.equalsIgnoreCase("layer")) {
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return layer;
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}
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return null;
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}
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@Override
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public Object getChild(Object parent, int index) {
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if (!(parent instanceof FLayers)) {
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return null;
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public Object getContextValue(String name) {
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if (name.equalsIgnoreCase("layer")) {
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return layer;
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}
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return ((FLayers) parent).getLayer(index);
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return null;
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}
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@Override
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public int getChildCount(Object parent) {
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if (!(parent instanceof FLayers)) {
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return 0;
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}
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return ((FLayers) parent).getLayersCount();
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public Iterator getDataValues() {
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return Arrays.asList(new FLayer[]{this.layer}).iterator();
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}
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@Override
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public boolean isLeaf(Object node) {
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return !(node instanceof FLayers);
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public Iterator getDataNames() {
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return Arrays.asList(new String[]{"layer"}).iterator();
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}
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@Override
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public int getIndexOfChild(Object parent, Object child) {
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for( int i=0; i<((FLayers)parent).getLayersCount() ; i++ ) {
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FLayer layer = ((FLayers)parent).getLayer(i);
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if( child == layer ) {
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return i;
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}
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public boolean hasDataValue(String name) {
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if (name.equalsIgnoreCase("layer")) {
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return true;
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}
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return -1;
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return false;
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}
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@Override
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public void valueForPathChanged(TreePath path, Object value) {
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public boolean hasContextValue(String name) {
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if (name.equalsIgnoreCase("layer")) {
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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 void addTreeModelListener(TreeModelListener listener) {
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listeners.add(listener);
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}
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public LayersTreeModel(FLayers layers) {
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this.layers = layers;
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}
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public void setFilter(Evaluator filter) {
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this.filter = filter;
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this.datafilter = new MyEvaluatorData();
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}
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@Override
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public Object getRoot() {
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return layers;
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}
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@Override
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public Object getChild(Object parent, int index) {
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if (!(parent instanceof FLayers)) {
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return null;
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}
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return ((FLayers) parent).getLayer(index);
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}
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@Override
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public void removeTreeModelListener(TreeModelListener listener) {
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listeners.remove(listener);
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@Override
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public int getChildCount(Object parent) {
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if (!(parent instanceof FLayers)) {
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return 0;
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}
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if (this.filter == null) {
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return ((FLayers) parent).getLayersCount();
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}
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int count = 0;
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for (int i = 0; i < ((FLayers) parent).getLayersCount(); i++) {
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FLayer layer = ((FLayers) parent).getLayer(i);
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try {
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if (!(layer instanceof FLayers)) {
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this.datafilter.layer = layer;
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if (BooleanUtils.isTrue((Boolean) this.filter.evaluate(this.datafilter))) {
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count++;
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}
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}
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} catch (Exception ex) {
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// Do nothing, skyp this layer on error.
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}
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}
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return count;
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public void reload() {
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TreeModelEvent event = new TreeModelEvent(this, new TreePath(this.layers));
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Iterator<TreeModelListener> iterator = listeners.iterator();
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TreeModelListener listener;
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while (iterator.hasNext()) {
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listener = iterator.next();
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listener.treeStructureChanged(event);
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}
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@Override
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public boolean isLeaf(Object node) {
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return !(node instanceof FLayers);
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}
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@Override
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public int getIndexOfChild(Object parent, Object child) {
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if (this.filter == null) {
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for (int i = 0; i < ((FLayers) parent).getLayersCount(); i++) {
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FLayer layer = ((FLayers) parent).getLayer(i);
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if (child == layer) {
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return i;
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}
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}
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return -1;
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}
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int count = 0;
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for (int i = 0; i < ((FLayers) parent).getLayersCount(); i++) {
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FLayer layer = ((FLayers) parent).getLayer(i);
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try {
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if (!(layer instanceof FLayers)) {
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this.datafilter.layer = layer;
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if (BooleanUtils.isTrue((Boolean) this.filter.evaluate(this.datafilter))) {
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if (child == layer) {
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return count;
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}
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count++;
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}
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}
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} catch (Exception ex) {
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// Do nothing, skyp this layer on error.
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}
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}
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return -1;
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}
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@Override
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public void valueForPathChanged(TreePath path, Object value) {
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}
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@Override
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public void addTreeModelListener(TreeModelListener listener) {
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listeners.add(listener);
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}
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@Override
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public void removeTreeModelListener(TreeModelListener listener) {
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listeners.remove(listener);
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}
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public void reload() {
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TreeModelEvent event = new TreeModelEvent(this, new TreePath(this.layers));
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Iterator<TreeModelListener> iterator = listeners.iterator();
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TreeModelListener listener;
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while (iterator.hasNext()) {
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listener = iterator.next();
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listener.treeStructureChanged(event);
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}
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}
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}
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