package org.activityinfo.ui.client.widget.coord;
/*
* #%L
* ActivityInfo Server
* %%
* Copyright (C) 2009 - 2013 UNICEF
* %%
* 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/gpl-3.0.html>.
* #L%
*/
import com.extjs.gxt.ui.client.widget.form.TextField;
import org.activityinfo.core.shared.type.converter.CoordinateAxis;
import org.activityinfo.i18n.shared.I18N;
/**
* GXT Field for Geographical coordinates. The type of the field is double, but
* users can enter coordinates in practically any format, which are converted on
* the fly.
*/
public class CoordinateField extends TextField<Double> {
/**
* Because of the conversion between DMS and degrees decimal, we may loose
* some precision. This becomes a problem when the coordinate is clamped to
* the administrative bounds, and the resulting value is *exactly* on the
* boundary. When rounded, the coordinate can fall on the wrong side of the
* boundary, resulting in a validation error.
* <p/>
* The delta value below should be sufficient to allow for such imprecision.
*/
public static final double DELTA = 0.00001;
private CoordinateEditor editor;
/**
* @param axis
*/
public CoordinateField(CoordinateAxis axis) {
super();
editor = new CoordinateEditor(axis);
this.setPropertyEditor(editor);
this.setValidator(editor);
this.setValidateOnBlur(true);
}
/**
* Sets the bounds for this field
*
* @param name the name of the bounds to present to users in the event of
* violation, (e.g. "Kapisa Province Boundary"
* @param minValue minimum allowed value for this field
* @param maxValue maximum allowed value for this field
*/
public void setBounds(String name, double minValue, double maxValue) {
editor.setMinValue(minValue - DELTA);
editor.setMaxValue(maxValue + DELTA);
editor.setOutOfBoundsMessage(I18N.MESSAGES.coordOutsideBounds(name));
}
}