ar.com.kyol.jet.client.wrappers.TimestampBoxWrapper.java Source code

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Here is the source code for ar.com.kyol.jet.client.wrappers.TimestampBoxWrapper.java

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/*
 * gwt-jet 
 * 
 * Widgets wrapping objects with reflection autopopulation for fast coding
 * 
 * The gwt-jet library provides a fast, flexible and easy way to wrap business 
 * objects that you want to show at the front-end. The jet classes automatically 
 * create the corresponding widget and automagically populate the user modified 
 * values into the original object.
 * 
 * gwt-jet was created by
 * Silvana Muzzopappa & Federico Pugnali
 * (c)2011 - Apache 2.0 license
 * 
 */
package ar.com.kyol.jet.client.wrappers;

import java.sql.Timestamp;
import java.util.Date;

import ar.com.kyol.jet.client.ObjectSetter;

import com.google.gwt.event.dom.client.ChangeEvent;
import com.google.gwt.event.dom.client.ChangeHandler;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.i18n.client.DateTimeFormat;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.datepicker.client.DateBox;

@SuppressWarnings("deprecation") //TODO Calendar in gwt not mature enough (see http://code.google.com/p/google-web-toolkit/issues/detail?id=603)
public class TimestampBoxWrapper extends Wrapper {

    private Timestamp timestamp;
    private Timestamp originalTimestamp;
    private DateBox dateBox;
    private HoursBox hoursBox;
    private MinutesBox minutesBox;

    /**
     * Instantiates a new timestamp box wrapper.
     *
     * @param timestamp the timestamp
     */
    public TimestampBoxWrapper(ObjectSetter objSetter) {
        this(objSetter, new DateBox(), new HoursBox(), new MinutesBox());
    }

    /**
     * Instantiates a new timestamp box wrapper.
     *
     * @param timestamp the timestamp
     * @param dateBox the date box
     * @param hoursBox the hours box
     * @param minutesBox the minutes box
     */
    public TimestampBoxWrapper(ObjectSetter objSetter, DateBox dateBox, HoursBox hoursBox, MinutesBox minutesBox) {
        this(objSetter, dateBox, hoursBox, minutesBox, false);
    }

    /**
     * Instantiates a new timestamp box wrapper.
     *
     * @param timestamp the timestamp
     * @param dateBox the date box
     * @param hoursBox the hours box
     * @param minutesBox the minutes box
     * @param useValueAsString the use value as string
     */
    public TimestampBoxWrapper(ObjectSetter objSetter, DateBox dateBox, HoursBox hoursBox, MinutesBox minutesBox,
            boolean useValueAsString) {
        super(useValueAsString);
        this.dateBox = dateBox;
        this.hoursBox = hoursBox;
        this.minutesBox = minutesBox;
        this.objSetter = objSetter;
        refreshTimestamp();
    }

    @Override
    public void initWrapper(ObjectSetter objSetter) {
        super.initWrapper(objSetter);

        if (objSetter.getFormat() != null && objSetter.getFormat().toLowerCase().startsWith("h")) {
            initTimeWidget();
        } else {
            initDateWidget();
        }

    }

    private void initTimeWidget() {
        int hour = this.timestamp.getHours();
        int minute = this.timestamp.getMinutes();

        hoursBox.setSelectedIndex(hour);
        minutesBox.setSelectedIndex(minute);

        hoursBox.addChangeHandler(new ChangeHandler() {

            @Override
            public void onChange(ChangeEvent arg0) {
                refreshTimestamp();
                TimestampBoxWrapper.this.timestamp
                        .setHours(Integer.parseInt(hoursBox.getValue(hoursBox.getSelectedIndex())));
                setProperty(TimestampBoxWrapper.this.timestamp);
            }

        });

        minutesBox.addChangeHandler(new ChangeHandler() {

            @Override
            public void onChange(ChangeEvent arg0) {
                refreshTimestamp();
                TimestampBoxWrapper.this.timestamp
                        .setMinutes(Integer.parseInt(minutesBox.getValue(minutesBox.getSelectedIndex())));
                setProperty(TimestampBoxWrapper.this.timestamp);
            }

        });

        //ChangeEvent.fireNativeEvent(Document.get().createChangeEvent(), hoursBox);
        //ChangeEvent.fireNativeEvent(Document.get().createChangeEvent(), minutesBox);

        HorizontalPanel panel = new HorizontalPanel();
        panel.add(hoursBox);
        panel.add(minutesBox);

        initWidget(panel);
    }

    private void initDateWidget() {
        if (this.originalTimestamp != null) {
            dateBox.setValue(new Date(this.timestamp.getTime()));
        }
        String format = "dd/MM/yyyy";
        if (objSetter.getFormat() != null && !objSetter.getFormat().equals("")) {
            format = objSetter.getFormat();
        }
        dateBox.setFormat(new DateBox.DefaultFormat(DateTimeFormat.getFormat(format)));
        dateBox.addValueChangeHandler(new ValueChangeHandler<Date>() {

            @Override
            public void onValueChange(ValueChangeEvent<Date> arg0) {
                refreshTimestamp();
                Date inputDate = TimestampBoxWrapper.this.dateBox.getValue();
                TimestampBoxWrapper.this.timestamp.setYear(inputDate.getYear());
                TimestampBoxWrapper.this.timestamp.setMonth(inputDate.getMonth());
                TimestampBoxWrapper.this.timestamp.setDate(inputDate.getDate());
                setProperty(TimestampBoxWrapper.this.timestamp);
            }
        });
        dateBox.getTextBox().addValueChangeHandler(new ValueChangeHandler<String>() {

            @Override
            public void onValueChange(ValueChangeEvent<String> arg0) {
                if ("".equals(arg0.getValue())) {
                    cleanDate();
                }
            }

        });
        initWidget(dateBox);
    }

    private void cleanDate() {
        dateBox.setValue(null);
        setProperty(null);
    }

    @Override
    protected String getValueAsString() {
        return this.dateBox.getValue().toString();
    }

    protected void refreshTimestamp() {
        originalTimestamp = (Timestamp) this.getProperty();
        if (originalTimestamp != null) {
            this.timestamp = new Timestamp(originalTimestamp.getTime());
        } else {
            this.timestamp = new Timestamp(1);
            this.timestamp.setYear(70);
            this.timestamp.setMonth(0);
            this.timestamp.setDate(1);
            this.timestamp.setHours(0);
            this.timestamp.setMinutes(0);
            this.timestamp.setSeconds(0);
            this.timestamp.setNanos(0);
        }
    }

}