Drag and drop in different forms drag value always null - 3.

[samtherecordman]

Drag and drop when the drag/drop tags are in different forms always results in drag value is null in processDrop() method.

Test case
-------------

The code below has two drag and drop areas.

1. Drag [Drag me A] onto [Drop zone A] and drag value is always null. The drag zone is in a different form to the drop zone.

INFO: org.richfaces.event.DropEvent[source=org.richfaces.component.html.HtmlDropSupport@13ed2fc]
May 23, 2008 10:25:22 AM dashboard.Test processDrop
INFO: drag value null
May 23, 2008 10:25:22 AM dashboard.Test processDrop
INFO: drop value bar

2. Drag [Drag me B] onto [Drop zone B] and drag value is correct. The zones are in a single form.

INFO: org.richfaces.event.DropEvent[source=org.richfaces.component.html.HtmlDropSupport@bc9d1a]
May 23, 2008 10:26:16 AM dashboard.Test processDrop
INFO: drag value foo
May 23, 2008 10:26:16 AM dashboard.Test processDrop
INFO: drop value bar


This looks like a bug. Regards

Sam Elstob
Triometric


Test.java

package dashboard;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.richfaces.event.DropEvent;
import org.richfaces.event.DropListener;

public class Test implements DropListener
{
private Log log = LogFactory.getLog(Dashboard.class);


@Override
public void processDrop(DropEvent event)
{
// TODO Auto-generated method stub
log.info(event);
log.info("drag value " + event.getDragValue());
log.info("drop value " + event.getDropValue());

}

}


test.jsp

<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
<%@ taglib uri="http://richfaces.org/a4j" prefix="a4j"%>
<%@ taglib uri="http://richfaces.org/rich" prefix="rich"%>


<f:view>


<rich:dragIndicator id="drag_indicator_1">

</rich:dragIndicator>
<h:form id="drag_form">
<a4j:outputPanel>
<h:outputText value="Drag me (A)" />
<rich:dragSupport dragType="drag_type_1" dragValue="foo" dragIndicator="drag_indicator_1">

</rich:dragSupport>
</a4j:outputPanel>
</h:form>

<h:form id="drop_form">
<rich:panel style="height: 200px; width: 200px">
<h:outputText value="Drop zone A" />
<rich:dropSupport acceptedTypes="drag_type_1"
dropListener="#{test.processDrop}" dropValue="bar">
</rich:dropSupport>
</rich:panel>
</h:form>

<h:form id="single_form">
<a4j:outputPanel>
<h:outputText value="Drag me (B)" />

<rich:dragSupport dragType="drag_type_1" dragValue="foo" dragIndicator="drag_indicator_1">

</rich:dragSupport>
</a4j:outputPanel>

<rich:panel style="height: 200px; width: 200px">
<h:outputText value="Drop zone B" />
<rich:dropSupport acceptedTypes="drag_type_1"
dropListener="#{test.processDrop}" dropValue="bar">
</rich:dropSupport>
</rich:panel>
</h:form>

<%-- --%>
<%-- --%>
<%-- Debugging panels below here--%>
<!-- a4j debug log -->
<a4j:outputPanel layout="block" rendered="true" id="panel_debug">
<rich:simpleTogglePanel switchType="client" label="a4j debug log"
opened="false" id="panel_debug_a4j">
<a4j:log popup="false" level="ALL" style="width: 800px; height: 300px;" />
</rich:simpleTogglePanel>
</a4j:outputPanel>



</f:view>

[samtherecordman]

Apologies - the subject line cut short which library version I am using:

3.2.0-SR1 / myfaces 1.2.3

Full list of libs:

antlr-2.7.6.jar facestrace-0.9.0.jar
asm-attrs.jar hibernate3.jar
asm.jar hibernate-annotations.jar
c3p0-0.9.1.jar hibernate-commons-annotations.jar
cglib-2.1.3.jar jakarta-oro.jar
jcommon-1.0.12.jar
commons-beanutils-1.7.0.jar jfreechart-1.0.9.jar
commons-chain-1.1.jar jstl-1.2.jar
commons-codec-1.3.jar jta.jar
commons-collections-3.2.jar myfaces-api-1.2.3.jar
commons-dbcp.jar myfaces-api-1.2.3-javadoc.jar
commons-digester-1.8.jar myfaces-impl-1.2.3.jar
commons-discovery-0.4.jar myfaces-impl-1.2.3-javadoc.jar
commons-fileupload-1.1.1.jar phaseTracker.jar
commons-io-1.1.jar portlet-api-1.0.jar
commons-logging-1.1.1.jar richfaces-api-3.2.0.SR1.jar
commons-pool.jar richfaces-impl-3.2.0.SR1.jar
commons-resources.jar richfaces-ui-3.2.0.SR1.jar
commons-validator-1.3.1.jar rowset.jar
struts-core-1.3.8.jar
dom4j-1.6.1.jar struts-faces-1.3.8.jar
ejb3-persistence.jar struts-taglib-1.3.8.jar

[ayanul]

Your problem was added in JIRA: http://jira.jboss.com/jira/browse/RF-3519

[samtherecordman]

I see this bug has been marked as closed since dragging between forms is not supported. Fair enough, that seems a reasonable limitation.

1. It would be good if the RichFaces manual made this clear.

2. It would also be good if an error message was given when this occurred.

As it stands it sort of half works (drop value is correct) with no indication that something is wrong.