Mercurial > dive4elements > river
diff flys-client/src/main/java/de/intevation/flys/client/client/ui/DoubleRangePanel.java @ 42:ba7df4a24ae0
Added a new widget to enter w/Q values in single and range mode.
flys-client/trunk@1483 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
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date | Wed, 16 Mar 2011 15:52:13 +0000 |
parents | |
children | a3d235c63195 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/flys-client/src/main/java/de/intevation/flys/client/client/ui/DoubleRangePanel.java Wed Mar 16 15:52:13 2011 +0000 @@ -0,0 +1,183 @@ +package de.intevation.flys.client.client.ui; + +import java.util.Map; + +import com.google.gwt.core.client.GWT; +import com.google.gwt.i18n.client.NumberFormat; + +import com.smartgwt.client.types.Alignment; +import com.smartgwt.client.widgets.form.DynamicForm; +import com.smartgwt.client.widgets.form.fields.FloatItem; +import com.smartgwt.client.widgets.form.fields.FormItem; +import com.smartgwt.client.widgets.form.fields.StaticTextItem; +import com.smartgwt.client.widgets.form.fields.events.BlurHandler; + +import de.intevation.flys.client.client.FLYSMessages; + + + +/** + * This class creates a DynamicForm with three input fields. + * + * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> + */ +public class DoubleRangePanel +extends DynamicForm +{ + /** The message class that provides i18n strings.*/ + protected FLYSMessages MESSAGES = GWT.create(FLYSMessages.class); + + + /** The constant name of the input field to enter the start of a distance.*/ + public static final String FIELD_FROM = "from"; + + /** The constant name of the input field to enter the end of a distance.*/ + public static final String FIELD_TO = "to"; + + /** The constant name of the input field to enter the step width of a + * distance.*/ + public static final String FIELD_WIDTH = "step"; + + + /** + * Creates a new form with a single input field that displays an array of + * double values. + * + * @param name The name of the TextItem. + * @param title The title of the TextItem. + * @param values The double values that should be displayed initially. + * @param handler The BlurHandler that is used to valide the input. + */ + public DoubleRangePanel( + String titleFrom, String titleTo, String titleStep, + double from, double to, double step, + int width, + BlurHandler handler) + { + FloatItem fromItem = new FloatItem(FIELD_FROM); + FloatItem toItem = new FloatItem(FIELD_TO); + FloatItem stepItem = new FloatItem(FIELD_WIDTH); + + fromItem.addBlurHandler(handler); + toItem.addBlurHandler(handler); + stepItem.addBlurHandler(handler); + + NumberFormat f = NumberFormat.getDecimalFormat(); + + fromItem.setValue(f.format(from)); + toItem.setValue(f.format(to)); + stepItem.setValue(f.format(step)); + + StaticTextItem fromText = new StaticTextItem("staticFrom"); + fromText.setValue(titleFrom); + fromText.setShowTitle(false); + fromItem.setShowTitle(false); + + StaticTextItem toText = new StaticTextItem("staticTo"); + toText.setValue(titleTo); + toText.setShowTitle(false); + toItem.setShowTitle(false); + + StaticTextItem stepText = new StaticTextItem("staticStep"); + stepText.setValue(titleStep); + stepText.setShowTitle(false); + stepItem.setShowTitle(false); + + int itemWidth = width / 6; + fromItem.setWidth(itemWidth); + fromText.setWidth(itemWidth); + toItem.setWidth(itemWidth); + toText.setWidth(itemWidth); + stepItem.setWidth(itemWidth); + stepText.setWidth(itemWidth); + + setFields(fromItem, fromText, toItem, toText, stepItem, stepText); + setFixedColWidths(false); + setNumCols(6); + setWidth(width); + setAlign(Alignment.CENTER); + } + + + /** + * This method validates the entered text in the input fields. If + * there are values that doesn't represent a valid float, an error is + * displayed. + * + * @param item The FormItem. + */ + protected boolean validateForm(FormItem item) { + boolean valid = true; + + String v = (String) item.getValue(); + + NumberFormat f = NumberFormat.getDecimalFormat(); + Map errors = getErrors(); + + try { + double value = f.parse(v); + + errors.remove(item.getFieldName()); + } + catch (NumberFormatException nfe) { + errors.put(item.getFieldName(), MESSAGES.wrongFormat()); + + item.focusInItem(); + + valid = false; + } + + setErrors(errors, true); + + return valid; + } + + + /** + * Returns the double value of <i>value</i>. + * + * @return the double value of <i>value</i>. + */ + protected double getDouble(String value) { + NumberFormat f = NumberFormat.getDecimalFormat(); + + return f.parse(value); + } + + + /** + * Returns the start value. + * + * @return the start value. + */ + public double getFrom() { + String v = getValueAsString(FIELD_FROM); + + return getDouble(v); + } + + + /** + * Returns the end value. + * + * @return the end value. + */ + public double getTo() { + String v = getValueAsString(FIELD_TO); + + return getDouble(v); + } + + + /** + * Returns the step width. + * + * @return the step width. + */ + public double getStep() { + String v = getValueAsString(FIELD_WIDTH); + + return getDouble(v); + } +} +// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :