/* Copyright (c) 2001 - 2007 TOPP - www.openplans.org. All rights reserved.
* This code is licensed under the GPL 2.0 license, available at the root
* application directory.
*/
package org.geoserver.wcs.web.demo;
import java.awt.Rectangle;
import org.apache.wicket.Component;
import org.apache.wicket.markup.html.form.FormComponentPanel;
import org.apache.wicket.markup.html.form.TextField;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.Model;
import org.apache.wicket.model.PropertyModel;
import org.geotools.coverage.grid.GridEnvelope2D;
import org.opengis.referencing.crs.CoordinateReferenceSystem;
/**
* A form component for a {@link GridEnvelope2D} object.
*
* @author Justin Deoliveira, OpenGeo
* @author Andrea Aime, OpenGeo
*/
public class GridPanel extends FormComponentPanel {
Integer minX,minY,maxX,maxY;
public GridPanel(String id ) {
super(id);
initComponents();
}
public GridPanel(String id, GridEnvelope2D e) {
this(id, new Model(e));
}
public GridPanel(String id, IModel model) {
super(id, model);
initComponents();
}
void initComponents() {
updateFields();
add( new TextField( "minX", new PropertyModel(this, "minX")) );
add( new TextField( "minY", new PropertyModel(this, "minY")) );
add( new TextField( "maxX", new PropertyModel(this, "maxX") ));
add( new TextField( "maxY", new PropertyModel(this, "maxY")) );
}
@Override
protected void onBeforeRender() {
updateFields();
super.onBeforeRender();
}
private void updateFields() {
GridEnvelope2D e = (GridEnvelope2D) getModelObject();
if(e != null) {
this.minX = (int) e.getMinX();
this.minY = (int) e.getMinY();
this.maxX = (int) e.getMaxX();
this.maxY = (int) e.getMaxY();
}
}
public GridPanel setReadOnly( final boolean readOnly ) {
visitChildren( TextField.class, new org.apache.wicket.Component.IVisitor() {
public Object component(Component component) {
component.setEnabled( !readOnly );
return null;
}
});
return this;
}
@Override
protected void convertInput() {
visitChildren( TextField.class, new org.apache.wicket.Component.IVisitor() {
public Object component(Component component) {
((TextField) component).processInput();
return null;
}
});
// update the grid envelope
if(minX != null && maxX != null && minY != null && maxX != null) {
final int width = maxX - minX;
final int height = maxY - minY;
setConvertedInput(new GridEnvelope2D(new Rectangle(minX, minY, width, height)));
} else {
setConvertedInput(null);
}
}
@Override
protected void onModelChanged() {
// when the client programmatically changed the model, update the fields
// so that the textfields will change too
updateFields();
visitChildren(TextField.class, new Component.IVisitor() {
public Object component(Component component) {
((TextField) component).clearInput();
return CONTINUE_TRAVERSAL;
}
});
}
}