vaadin-framework/src/com/itmill/toolkit/terminal/gwt/client/ui/IDateField.java

package com.itmill.toolkit.terminal.gwt.client.ui;

import java.util.Date;

import com.google.gwt.user.client.ui.FlowPanel;
import com.itmill.toolkit.terminal.gwt.client.ApplicationConnection;
import com.itmill.toolkit.terminal.gwt.client.DateTimeService;
import com.itmill.toolkit.terminal.gwt.client.LocaleNotLoadedException;
import com.itmill.toolkit.terminal.gwt.client.Paintable;
import com.itmill.toolkit.terminal.gwt.client.UIDL;

public class IDateField extends FlowPanel implements Paintable {

	public static final String CLASSNAME = "i-datefield";

	String id;

	ApplicationConnection client;

	protected boolean immediate;

	public static int RESOLUTION_YEAR = 0;
	public static int RESOLUTION_MONTH = 1;
	public static int RESOLUTION_DAY = 2;
	public static int RESOLUTION_HOUR = 3;
	public static int RESOLUTION_MIN = 4;
	public static int RESOLUTION_SEC = 5;
	public static int RESOLUTION_MSEC = 6;

	protected int currentResolution = RESOLUTION_YEAR;

	protected String currentLocale;

	protected boolean readonly;

	protected boolean enabled;

	protected Date date = null;

	protected DateTimeService dts;

	public IDateField() {
		setStyleName(CLASSNAME);
		dts = new DateTimeService();
	}

	public void updateFromUIDL(UIDL uidl, ApplicationConnection client) {
		// Ensure correct implementation and let layout manage caption
		if (client.updateComponent(this, uidl, true))
			return;

		// Save details
		this.client = client;
		this.id = uidl.getId();
		this.immediate = uidl.getBooleanAttribute("immediate");

		readonly = uidl.getBooleanAttribute("readonly");
		enabled = !uidl.getBooleanAttribute("disabled");

		if (uidl.hasAttribute("locale")) {
			String locale = uidl.getStringAttribute("locale");
			try {
				dts.setLocale(locale);
				currentLocale = locale;
			} catch (LocaleNotLoadedException e) {
				currentLocale = dts.getLocale();
				// TODO redirect this to console
				System.out.println("Tried to use an unloaded locale \""
						+ locale + "\". Using default locale (" + currentLocale
						+ ").");
			}
		}

		int newResolution;
		if (uidl.hasVariable("msec"))
			newResolution = RESOLUTION_MSEC;
		else if (uidl.hasVariable("sec"))
			newResolution = RESOLUTION_SEC;
		else if (uidl.hasVariable("min"))
			newResolution = RESOLUTION_MIN;
		else if (uidl.hasVariable("hour"))
			newResolution = RESOLUTION_HOUR;
		else if (uidl.hasVariable("day"))
			newResolution = RESOLUTION_DAY;
		else if (uidl.hasVariable("month"))
			newResolution = RESOLUTION_MONTH;
		else
			newResolution = RESOLUTION_YEAR;

		currentResolution = newResolution;

		int year = uidl.getIntVariable("year");
		int month = (currentResolution >= RESOLUTION_MONTH) ? uidl
				.getIntVariable("month") : -1;
		int day = (currentResolution >= RESOLUTION_DAY) ? uidl
				.getIntVariable("day") : -1;
		int hour = (currentResolution >= RESOLUTION_HOUR) ? uidl
				.getIntVariable("hour") : -1;
		int min = (currentResolution >= RESOLUTION_MIN) ? uidl
				.getIntVariable("min") : -1;
		int sec = (currentResolution >= RESOLUTION_SEC) ? uidl
				.getIntVariable("sec") : -1;
		int msec = (currentResolution >= RESOLUTION_MSEC) ? uidl
				.getIntVariable("msec") : -1;

		// Construct new date for this datefield (only if not null)
		if (year > -1)
			date = new Date((long) getTime(year, month, day, hour, min, sec,
					msec));

	}

	/*
	 * We need this redundant native function because Java's Date object doesn't
	 * have a setMilliseconds method.
	 */
	private static native double getTime(int y, int m, int d, int h, int mi,
			int s, int ms) /*-{
	try {
		var date = new Date();
		if(y && y >= 0) date.setFullYear(y);
		if(m && m >= 1) date.setMonth(m-1);
		if(d && d >= 0) date.setDate(d);
		if(h && h >= 0) date.setHours(h);
		if(mi && mi >= 0) date.setMinutes(mi);
		if(s && s >= 0) date.setSeconds(s);
		if(ms && ms >= 0) date.setMilliseconds(ms);
		return date.getTime();
	} catch (e) {
		// TODO print some error message on the console
		//console.log(e);
		return (new Date()).getTime();
	}
	}-*/;

	public int getMilliseconds() {
		return (int) (date.getTime() - date.getTime() / 1000 * 1000);
	}

	public void setMilliseconds(int ms) {
		date.setTime(date.getTime() / 1000 * 1000 + ms);
	}

	public int getCurrentResolution() {
		return currentResolution;
	}

	public void setCurrentResolution(int currentResolution) {
		this.currentResolution = currentResolution;
	}

	public String getCurrentLocale() {
		return currentLocale;
	}

	public void setCurrentLocale(String currentLocale) {
		this.currentLocale = currentLocale;
	}

	public Date getCurrentDate() {
		return date;
	}

	public void setCurrentDate(Date date) {
		this.date = date;
	}

	public boolean isImmediate() {
		return immediate;
	}

	public boolean isReadonly() {
		return readonly;
	}

	public boolean isEnabled() {
		return enabled;
	}

	public DateTimeService getDateTimeService() {
		return dts;
	}

	public String getId() {
		return id;
	}

	public ApplicationConnection getClient() {
		return client;
	}
}