b30-1701986.zul

ZK是一个Ajax Java Web框架

<window title="constraints depends on two component" border="normal">
	Bug 1701986: The error msgbox should disappear when error is corrected.
	<zscript>
		<![CDATA[
Constraint ctt = new Constraint() {
	public void validate(Component comp, Object value)
			throws WrongValueException {		
			comp.setAttribute("dt", value);
			if (comp.getFellowIfAny("endDate") != null
					&& comp.getFellowIfAny("beginDate") != null) {
				Date beginValue = null;
				if (comp.getId().equals("beginDate")) {
					beginValue = (Date) value;
				} else {
					beginValue = (Date) ((Datebox) comp.getFellowIfAny("beginDate")).getAttribute("dt");
				}
				Date endValue = null;
				if (comp.getId().equals("endDate")) {
					endValue = (Date) value;
				} else {					
					endValue = (Date)((Datebox) comp.getFellowIfAny("endDate")).getAttribute("dt");
				}
				if (beginValue != null && endValue != null) {
					if (endValue.before(beginValue)) {
						throw new WrongValueException(comp, "ErrorMessage");
					} else {					
						long startM = beginValue.getTime();
						long endM = endValue.getTime();
						int days_plan = ((Long) ((endM - startM) / 1000 / 60 / 60 / 24))
								.intValue();
						((Label) comp.getFellowIfAny("days"))
								.setValue(new Integer(days_plan).toString());
						comp.getFellow("beginDate").clearErrorMessage();
						comp.getFellow("endDate").clearErrorMessage();
					}
				}
			}
	}
};
]]>
	</zscript>
	<grid width="90%">
		<rows>
			<row>			
				<label id="days" />
			</row>
			<row>
				start date box:
				<datebox id="beginDate" constraint="${ctt}"/>
			</row>
			<row>
				end date box:
				<datebox id="endDate" constraint="${ctt}" />
			</row>
		</rows>
	</grid>
	<label id = "lb" />
<button label="submit">
<attribute name="onClick">
lb.setValue((beginDate.getValue() == null ? "" : beginDate.getValue().toString())
+(endDate.getValue() == null ? "" : endDate.getValue().toString()) );
</attribute>
</button>
</window>