hi all,
i need two checkboxes in each row of a table. so thats no problem at all, but if
i sort the table all the selected checkboxes are unset. i also have a textfield
in each row and if i enter some text in the field, it will stay like it should.
does anybody know how i can store the state of the boxes?
i have tried to code my own checkbox component because i need to pass a short
value and not a boolean one. if the short value is 1 it should set the box to
selected and if the value is 0 it should set false.
heres the code (bad code). some lines are from the textfield component.
public abstract class SbbsWebCheckbox extends Checkbox {
public abstract IBinding getValueBinding();
public String readValue() {
Short value = (Short) getValueBinding().getObject("value", Short.class);
if (value != null)
System.out.println("###############READValue " +
value.shortValue());
else
System.out.println("###############READValue 00000000000000000" );
if (value == null)
return "0";
else
return value.toString() ;
}
public void updateValue(String value) {
getValueBinding().setObject(value);
System.out.println("#UPDATEVALUE#######################VALUE " +
value);
if (value.equals("0")) {
setSelected(false);
}
else if (value.equals("1")) {
setSelected(true);
}
else if (value.equals("on")) {
setSelected(true);
}
}
protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle) {
String value;
IForm form = getForm(cycle);
boolean rewinding = form.isRewinding();
// If the cycle is rewinding, but the form containing this field is not,
// then there's no point in doing more work.
if (!rewinding && cycle.isRewinding())
return;
// Used whether rewinding or not.
String name = form.getElementId(this);
if (rewinding) {
String param = cycle.getRequestContext().getParameter(name);
System.out.println("XXXXXXXXXXXXXXXXXXXXXXXXX param " + param);
try {
value = param;
if (value != null)
updateValue(value);
return;
}
catch (Exception e) {
}
}
writer.beginEmpty("input");
writer.attribute("type", "checkbox");
writer.attribute("name", name);
if (isDisabled())
writer.attribute("disabled", "disabled");
value = readValue();
System.out.println("RENDER#################### " + value);
if (value != null) {
updateValue(value);
}
if (isSelected())
writer.attribute("checked", "checked");
renderInformalParameters(writer, cycle);
writer.closeTag();
}
/*public abstract void setValue(Short value);
public abstract Short getValue();
*/
protected void beforeCloseTag(IMarkupWriter writer, IRequestCycle cycle) {
// Do nothing.
}
the .page file: (only the important part)
.......
.......
<parameter name="selected"
type="boolean"
required="yes"
direction="form">
<description>
The property read and updated by the Checkbox.
</description>
</parameter>
<parameter name="value" type="java.lang.Short" required="yes"
direction="form"/>
<parameter name="disabled" type="boolean" direction="in">
<description>
If true, then the checkbox will be disabled and any input from the checkbox
will be ignored.
</description>
</parameter>
<reserved-parameter name="type"/>
<reserved-parameter name="checked"/>
<reserved-parameter name="name"/>
<reserved-parameter name="value"/>
<property-specification name="name" type="java.lang.String"/>
<property-specification name="form" type="org.apache.tapestry.IForm"/>
thanks for your help!!
regards
sebastian
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