teichmann@5861: /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
teichmann@5861:  * Software engineering by Intevation GmbH
teichmann@5861:  *
teichmann@5993:  * This file is Free Software under the GNU AGPL (>=v3)
teichmann@5861:  * and comes with ABSOLUTELY NO WARRANTY! Check out the
teichmann@5993:  * documentation coming with Dive4Elements River for details.
teichmann@5861:  */
teichmann@5861: 
teichmann@5835: package org.dive4elements.river.client.client.ui;
ingo@42: 
gernotbelger@9270: import java.util.Map;
gernotbelger@9270: 
gernotbelger@9270: import org.dive4elements.river.client.client.FLYSConstants;
gernotbelger@9270: 
ingo@42: import com.google.gwt.core.client.GWT;
ingo@42: import com.google.gwt.i18n.client.NumberFormat;
ingo@42: import com.smartgwt.client.types.Alignment;
ingo@42: import com.smartgwt.client.widgets.form.DynamicForm;
ingo@42: import com.smartgwt.client.widgets.form.fields.FloatItem;
ingo@42: import com.smartgwt.client.widgets.form.fields.FormItem;
ingo@42: import com.smartgwt.client.widgets.form.fields.StaticTextItem;
ingo@42: import com.smartgwt.client.widgets.form.fields.events.BlurHandler;
ingo@42: 
ingo@42: /**
ingo@42:  * This class creates a DynamicForm with three input fields.
ingo@42:  *
ingo@42:  * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
ingo@42:  */
gernotbelger@9270: public class DoubleRangePanel extends DynamicForm {
gernotbelger@9270:     /** The message class that provides i18n strings. */
ingo@211:     protected FLYSConstants MESSAGES = GWT.create(FLYSConstants.class);
ingo@42: 
gernotbelger@9270:     /** The constant name of the input field to enter the start of a distance. */
ingo@42:     public static final String FIELD_FROM = "from";
ingo@42: 
gernotbelger@9270:     /** The constant name of the input field to enter the end of a distance. */
ingo@42:     public static final String FIELD_TO = "to";
ingo@42: 
gernotbelger@9270:     /**
gernotbelger@9270:      * The constant name of the input field to enter the step width of a
gernotbelger@9270:      * distance.
gernotbelger@9270:      */
ingo@42:     public static final String FIELD_WIDTH = "step";
ingo@42: 
raimund@233:     /** The textboxes */
raimund@233:     protected FloatItem fromItem;
raimund@233:     protected FloatItem toItem;
raimund@233:     protected FloatItem stepItem;
raimund@233: 
ingo@1265:     public DoubleRangePanel() {
ingo@1265:     }
ingo@1265: 
teichmann@7748:     public FloatItem getToItem() {
gernotbelger@9270:         return this.toItem;
teichmann@7748:     }
teichmann@7748: 
ingo@42:     /**
ingo@42:      * Creates a new form with a single input field that displays an array of
ingo@42:      * double values.
ingo@42:      *
gernotbelger@9270:      * @param name
gernotbelger@9270:      *            The name of the TextItem.
gernotbelger@9270:      * @param title
gernotbelger@9270:      *            The title of the TextItem.
gernotbelger@9270:      * @param values
gernotbelger@9270:      *            The double values that should be displayed initially.
gernotbelger@9270:      * @param handler
gernotbelger@9270:      *            The BlurHandler that is used to valide the input.
ingo@42:      */
gernotbelger@9270:     public DoubleRangePanel(final String titleFrom, final String titleTo, final String titleStep, final double from, final double to, final double step,
gernotbelger@9270:             final int width, final BlurHandler handler) {
gernotbelger@9270:         this(titleFrom, titleTo, titleStep, from, to, step, width, handler, "right");
ingo@787:     }
ingo@787: 
gernotbelger@9270:     public DoubleRangePanel(final String titleFrom, final String titleTo, final String titleStep, final double from, final double to, final double step,
gernotbelger@9270:             final int width, final BlurHandler handler, final String labelOrientation) {
gernotbelger@9270:         this.fromItem = new FloatItem(FIELD_FROM);
gernotbelger@9270:         this.toItem = new FloatItem(FIELD_TO);
gernotbelger@9270:         this.stepItem = new FloatItem(FIELD_WIDTH);
ingo@787: 
gernotbelger@9270:         this.fromItem.addBlurHandler(handler);
gernotbelger@9270:         this.toItem.addBlurHandler(handler);
gernotbelger@9270:         this.stepItem.addBlurHandler(handler);
ingo@42: 
gernotbelger@9270:         final NumberFormat f = NumberFormat.getDecimalFormat();
ingo@42: 
gernotbelger@9270:         this.fromItem.setValue(f.format(from));
gernotbelger@9270:         this.toItem.setValue(f.format(to));
gernotbelger@9270:         this.stepItem.setValue(f.format(step));
ingo@42: 
gernotbelger@9270:         final StaticTextItem fromText = new StaticTextItem("staticFrom");
ingo@42:         fromText.setValue(titleFrom);
ingo@42:         fromText.setShowTitle(false);
gernotbelger@9270:         this.fromItem.setShowTitle(false);
ingo@42: 
gernotbelger@9270:         final StaticTextItem toText = new StaticTextItem("staticTo");
ingo@42:         toText.setValue(titleTo);
ingo@42:         toText.setShowTitle(false);
gernotbelger@9270:         this.toItem.setShowTitle(false);
ingo@42: 
gernotbelger@9270:         final StaticTextItem stepText = new StaticTextItem("staticStep");
ingo@42:         stepText.setValue(titleStep);
ingo@42:         stepText.setShowTitle(false);
gernotbelger@9270:         this.stepItem.setShowTitle(false);
ingo@42: 
gernotbelger@9270:         final int itemWidth = width / 6;
gernotbelger@9270:         this.fromItem.setWidth(itemWidth);
ingo@42:         fromText.setWidth(itemWidth);
gernotbelger@9270:         this.toItem.setWidth(itemWidth);
ingo@42:         toText.setWidth(itemWidth);
gernotbelger@9270:         this.stepItem.setWidth(itemWidth);
ingo@42:         stepText.setWidth(itemWidth);
ingo@42: 
ingo@787:         if (labelOrientation.equals("right")) {
gernotbelger@9270:             setFields(this.fromItem, fromText, this.toItem, toText, this.stepItem, stepText);
gernotbelger@9270:         } else {
gernotbelger@9270:             setFields(fromText, this.fromItem, toText, this.toItem, stepText, this.stepItem);
ingo@787:         }
ingo@787: 
ingo@42:         setFixedColWidths(false);
ingo@42:         setNumCols(6);
ingo@42:         setWidth(width);
ingo@42:         setAlign(Alignment.CENTER);
ingo@42:     }
ingo@42: 
ingo@42:     /**
raimund@233:      * This method takes distances values and sets them to the textboxes
raimund@233:      * visualizied by this widget.
raimund@233:      *
gernotbelger@9270:      * @param from
gernotbelger@9270:      *            The from value.
gernotbelger@9270:      * @param to
gernotbelger@9270:      *            The to value.
gernotbelger@9270:      * @param steps
gernotbelger@9270:      *            The max steps.
raimund@233:      */
gernotbelger@9270:     public void setValues(final double from, final double to, final double steps) {
gernotbelger@9270:         final NumberFormat f = NumberFormat.getDecimalFormat();
raimund@233: 
gernotbelger@9270:         this.fromItem.setValue(f.format(from));
gernotbelger@9270:         this.toItem.setValue(f.format(to));
gernotbelger@9270:         this.stepItem.setValue(f.format(steps));
raimund@233:     }
raimund@233: 
ingo@562:     public boolean validateForm() {
ingo@1490:         try {
gernotbelger@9270:             return validateForm(this.fromItem) && validateForm(this.toItem) && validateForm(this.stepItem);
ingo@1490:         }
gernotbelger@9270:         catch (final NumberFormatException nfe) {
ingo@1490:             return false;
ingo@1490:         }
ingo@562:     }
ingo@562: 
raimund@233:     /**
ingo@42:      * This method validates the entered text in the input fields. If
ingo@42:      * there are values that doesn't represent a valid float, an error is
ingo@42:      * displayed.
ingo@42:      *
felix@7745:      * Also if negativeToAllowed is false, an error is registered if
felix@7745:      * the 'to' field contains a negative value.
felix@7745:      *
gernotbelger@9270:      * @param item
gernotbelger@9270:      *            The FormItem.
ingo@42:      */
christian@4131:     @SuppressWarnings("unchecked")
gernotbelger@9270:     protected boolean validateForm(final FormItem item) {
ingo@59:         if (item instanceof StaticTextItem) {
ingo@59:             return true;
ingo@59:         }
ingo@59: 
ingo@42:         boolean valid = true;
ingo@42: 
gernotbelger@9270:         final String v = (String) item.getValue();
ingo@42: 
gernotbelger@9270:         final NumberFormat f = NumberFormat.getDecimalFormat();
christian@4131:         @SuppressWarnings("rawtypes")
gernotbelger@9270:         final Map errors = getErrors();
ingo@42: 
ingo@42:         try {
ingo@562:             if (v == null) {
ingo@562:                 throw new NumberFormatException("empty");
ingo@562:             }
ingo@562: 
teichmann@7748:             f.parse(v);
ingo@42: 
ingo@42:             errors.remove(item.getFieldName());
ingo@42:         }
gernotbelger@9270:         catch (final NumberFormatException nfe) {
gernotbelger@9270:             errors.put(item.getFieldName(), this.MESSAGES.wrongFormat());
ingo@42: 
ingo@42:             item.focusInItem();
ingo@42: 
ingo@42:             valid = false;
ingo@42:         }
ingo@42: 
ingo@42:         setErrors(errors, true);
ingo@42: 
ingo@42:         return valid;
ingo@42:     }
ingo@42: 
ingo@42:     /**
ingo@42:      * Returns the double value of <i>value</i>.
ingo@42:      *
ingo@42:      * @return the double value of <i>value</i>.
ingo@42:      */
gernotbelger@9270:     protected double getDouble(final String value) {
gernotbelger@9270:         final NumberFormat f = NumberFormat.getDecimalFormat();
ingo@42: 
gernotbelger@9270:         final String[] splitted = StringArrayParseHelper.getArrayFromRawString(value); // Nullpointer?
ingo@571: 
ingo@571:         return f.parse(splitted[0]);
ingo@42:     }
ingo@42: 
ingo@42:     /**
ingo@42:      * Returns the start value.
ingo@42:      *
ingo@42:      * @return the start value.
ingo@42:      */
ingo@1490:     public double getFrom() throws NullPointerException {
gernotbelger@9270:         final String v = getValueAsString(FIELD_FROM);
ingo@42: 
ingo@42:         return getDouble(v);
ingo@42:     }
ingo@42: 
ingo@42:     /**
ingo@42:      * Returns the end value.
ingo@42:      *
ingo@42:      * @return the end value.
ingo@42:      */
ingo@1490:     public double getTo() throws NullPointerException {
gernotbelger@9270:         final String v = getValueAsString(FIELD_TO);
ingo@42: 
ingo@42:         return getDouble(v);
ingo@42:     }
ingo@42: 
ingo@42:     /**
ingo@42:      * Returns the step width.
ingo@42:      *
ingo@42:      * @return the step width.
ingo@42:      */
ingo@1490:     public double getStep() throws NullPointerException {
gernotbelger@9270:         final String v = getValueAsString(FIELD_WIDTH);
ingo@42: 
ingo@42:         return getDouble(v);
ingo@42:     }
ingo@580: 
ingo@580:     /**
ingo@580:      * Sets the value of the field with name <i>fieldname</i>.
ingo@580:      *
gernotbelger@9270:      * @param value
gernotbelger@9270:      *            The new value.
gernotbelger@9270:      * @param fieldname
gernotbelger@9270:      *            The name of the field.
ingo@580:      */
gernotbelger@9270:     public void setDoubleValue(final double value, final String fieldname) {
gernotbelger@9270:         final NumberFormat f = NumberFormat.getDecimalFormat();
ingo@580:         setValue(fieldname, f.format(value));
ingo@580:     }
ingo@580: 
ingo@580:     /**
ingo@580:      * Sets a new start value.
ingo@580:      *
gernotbelger@9270:      * @param value
gernotbelger@9270:      *            The new start value.
ingo@580:      */
gernotbelger@9270:     public void setFrom(final double value) {
ingo@580:         setDoubleValue(value, FIELD_FROM);
ingo@580:     }
ingo@580: 
ingo@580:     /**
ingo@580:      * Sets a new end value.
ingo@580:      *
gernotbelger@9270:      * @param value
gernotbelger@9270:      *            The new end value.
ingo@580:      */
gernotbelger@9270:     public void setTo(final double value) {
ingo@580:         setDoubleValue(value, FIELD_TO);
ingo@580:     }
ingo@780: 
ingo@780:     /**
ingo@780:      * Sets a new step width.
ingo@780:      *
gernotbelger@9270:      * @param value
gernotbelger@9270:      *            The new step width.
ingo@780:      */
gernotbelger@9270:     public void setStep(final double value) {
ingo@780:         setDoubleValue(value, FIELD_WIDTH);
ingo@780:     }
ingo@42: }
ingo@42: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :