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index.zulzul<zk>
<div id="main" apply="pkg$.TimezoneComposer">
<timer id="uiUpdateTimer" repeats="true" delay="1000"></timer>
<vlayout>
<datebox id="userInputDatebox" width="300px"></datebox>
<searchbox id="timeZoneSearchBox" width="300px" autoclose="true"></searchbox>
<grid>
<auxhead>
<auxheader label="timezone info"></auxheader>
<auxheader label="value"></auxheader>
</auxhead>
<rows>
<row>
<cell>
<label value="user locale"></label>
</cell>
<cell >
<label id="userLocal" />
</cell>
</row>
<row>
<cell>
<label value="user local timezone"></label>
</cell>
<cell >
<label id="userLocalTimeZone" />
</cell>
</row>
<row>
<cell>
<label value="user local offset from GMT"></label>
</cell>
<cell >
<label id="userLocalGmtOffset" />
</cell>
</row>
<row>
<cell>
<label value="user selected time as GMT+0 timestamp"></label>
</cell>
<cell >
<label id="userToGmt" />
</cell>
</row>
<row>
<cell>
<label value="user selected time as user local timestamp"></label>
</cell>
<cell >
<label id="userToUser" />
</cell>
</row>
<row>
<cell>
<label value="user selected time as LOCALDATETIME"></label>
</cell>
<cell >
<label id="userLocalToUser" />
</cell>
</row>
<row>
<cell>
<label value="user selected time as server local timestamp"></label>
</cell>
<cell >
<label id="userToServer" />
</cell>
</row>
<row>
<cell>
<label value="server local timezone"></label>
</cell>
<cell>
<label id="serverLocal" />
</cell>
</row>
<row>
<cell>
<label value="server local offset from GMT"></label>
</cell>
<cell>
<label id="serverLocalGmtOffset" />
</cell>
</row>
<row>
<cell>
<label value="server time as GMT+0 timestamp"></label>
</cell>
<cell >
<label id="serverToGmt" />
</cell>
</row>
<row>
<cell>
<label value="server time as as a user local timestamp"></label>
</cell>
<cell >
<label id="serverToUser" />
</cell>
</row>
<row>
<cell>
<label value="server time as as a server local timestamp"></label>
</cell>
<cell >
<label id="serverToServer" />
</cell>
</row>
</rows>
</grid>
</vlayout>
</div>
</zk>TimezoneComposer.javajavaimport java.text.SimpleDateFormat;
import java.time.Instant;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.Iterator;
import java.util.TimeZone;
import org.zkoss.util.TimeZones;
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.Page;
import org.zkoss.zk.ui.event.ClientInfoEvent;
import org.zkoss.zk.ui.event.Events;
import org.zkoss.zk.ui.event.SelectEvent;
import org.zkoss.zk.ui.metainfo.ComponentInfo;
import org.zkoss.zk.ui.select.SelectorComposer;
import org.zkoss.zk.ui.select.annotation.Listen;
import org.zkoss.zk.ui.select.annotation.Wire;
import org.zkoss.zkmax.zul.Searchbox;
import org.zkoss.zul.Datebox;
import org.zkoss.zul.Label;
import org.zkoss.zul.ListModelList;
public class TimezoneComposer extends SelectorComposer<Component> {
@Wire
private Datebox userInputDatebox;
@Wire
private Searchbox<String> timeZoneSearchBox;
@Wire
private Label userLocal, userLocalTimeZone, userLocalGmtOffset, userToGmt, userToUser, userLocalToUser, userToServer, serverLocal, serverLocalGmtOffset, serverToGmt, serverToUser, serverToServer;
private ZoneId clientZoneId;
private ZoneId serverZoneId = ZoneId.of("GMT+4");
private SimpleDateFormat userSimpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
private SimpleDateFormat serverSimpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
private SimpleDateFormat gmtSimpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
private ListModelList<String> timeZoneSeachModel;
@Override
public ComponentInfo doBeforeCompose(Page page, Component parent, ComponentInfo compInfo) {
// TimeZone.setDefault(TimeZone.getTimeZone(serverZoneId));
return super.doBeforeCompose(page, parent, compInfo);
}
@Listen(Events.ON_CLIENT_INFO + "=#main")
public void handleClientInfo(ClientInfoEvent event) {
clientZoneId = event.getZoneId();
timeZoneSeachModel.addToSelection(clientZoneId.getId());
userSimpleDateFormat.setTimeZone(TimeZone.getTimeZone(clientZoneId));
userInputDatebox.setDisplayedTimeZones(Arrays.asList(TimeZone.getTimeZone(clientZoneId)));
userInputDatebox.setTimeZone(TimeZone.getTimeZone(clientZoneId));
updateAllTimeStamps();
}
@Listen(Events.ON_SELECT + "=#timeZoneSearchBox")
public void handleLocalTimeZoneChange(SelectEvent<Searchbox<String>, String> event) {
Iterator<String> valueIterator = event.getSelectedObjects().iterator();
if(valueIterator.hasNext()) {
clientZoneId = ZoneId.of(valueIterator.next());
userSimpleDateFormat.setTimeZone(TimeZone.getTimeZone(clientZoneId));
userInputDatebox.setDisplayedTimeZones(Arrays.asList(TimeZone.getTimeZone(clientZoneId)));
userInputDatebox.setTimeZone(TimeZone.getTimeZone(clientZoneId));
}
updateAllTimeStamps();
}
@Listen(Events.ON_CHANGE + "=#userInputDatebox")
public void handleUserInputDateboxChange() {
updateAllTimeStamps();
}
@Listen(Events.ON_TIMER + "=#uiUpdateTimer")
public void handleUpdateTimer() {
updateAllTimeStamps();
}
@Override
public void doAfterCompose(Component comp) throws Exception {
super.doAfterCompose(comp);
userInputDatebox.setValue(new Date());
userInputDatebox.setFormat("yyyy-MM-dd HH:mm:ss");
userInputDatebox.setTimeZonesReadonly(true);
userInputDatebox.setReadonly(true);
timeZoneSeachModel = new ListModelList<String>(TimeZone.getAvailableIDs());
timeZoneSeachModel.setMultiple(false);
timeZoneSearchBox.setModel(timeZoneSeachModel);
}
private void updateAllTimeStamps() {
serverSimpleDateFormat.setTimeZone(TimeZone.getTimeZone(serverZoneId.getId()));
userSimpleDateFormat.setTimeZone(TimeZone.getTimeZone(clientZoneId));
gmtSimpleDateFormat.setTimeZone(TimeZone.getTimeZone("GMT+0"));
userLocal.setValue(clientZoneId.getId());
userLocalTimeZone.setValue(TimeZone.getTimeZone(clientZoneId).getDisplayName());
userLocalGmtOffset.setValue(ZonedDateTime.ofInstant(Instant.now(), clientZoneId).getOffset().toString());
userToUser.setValue(userSimpleDateFormat.format(userInputDatebox.getValue()));
userLocalToUser.setValue(localDateTimeToString(userInputDatebox.getValueInLocalDateTime()));
userToServer.setValue(serverSimpleDateFormat.format(userInputDatebox.getValue()));
userToGmt.setValue(gmtSimpleDateFormat.format(userInputDatebox.getValue()));
serverLocal.setValue(serverZoneId.getId());
Date localDate = new Date();
serverLocalGmtOffset.setValue(ZonedDateTime.ofInstant(Instant.now(), serverZoneId).getOffset().toString());
serverToGmt.setValue(gmtSimpleDateFormat.format(localDate));
serverToUser.setValue(userSimpleDateFormat.format(localDate));
serverToServer.setValue(serverSimpleDateFormat.format(localDate));
}
private String localDateTimeToString(LocalDateTime valueInLocalDateTime) {
StringBuilder sb = new StringBuilder();
sb.append("Year: ");
sb.append(valueInLocalDateTime.getYear());
sb.append(", Month: ");
sb.append(valueInLocalDateTime.getMonth());
sb.append(", DayOfMonth: ");
sb.append(valueInLocalDateTime.getDayOfMonth());
sb.append(", Hour: ");
sb.append(valueInLocalDateTime.getHour());
sb.append(", Minute: ");
sb.append(valueInLocalDateTime.getMinute());
sb.append(" Second: ");
sb.append(valueInLocalDateTime.getSecond());
return sb.toString();
}
}