RF 4 Tree drag-n- drop support

[robertgary1]

I don't see any reference of drag and drop is still supported in trees in RF 4.1. I'm migrating from 3.3.3.Final. I'm using the example dropListener and the symbols no longer exist...

    public void dropListener(DropEvent dropEvent) {
        try {
            // resolve drag destination attributes
            UITreeNode destNode = (dropEvent.getSource() instanceof UITreeNode) ? (UITreeNode) dropEvent.getSource() : null;
            UITree destTree = destNode != null ? destNode.getUITree() : null;
            TreeRowKey dropNodeKey = (dropEvent.getDropValue() instanceof TreeRowKey) ? (TreeRowKey) dropEvent.getDropValue() : null;
            TreeNode droppedInNode = dropNodeKey != null ? destTree.getTreeNode(dropNodeKey) : null;
            // resolve drag source attributes
            UITreeNode srcNode = (dropEvent.getDraggableSource() instanceof UITreeNode) ? (UITreeNode) dropEvent.getDraggableSource() : null;
            UITree srcTree = srcNode != null ? srcNode.getUITree() : null;
            TreeRowKey dragNodeKey = (dropEvent.getDragValue() instanceof TreeRowKey) ? (TreeRowKey) dropEvent.getDragValue() : null;
            TreeNode draggedNode = dragNodeKey != null ? srcTree.getTreeNode(dragNodeKey) : null;
            if (dropEvent.getDraggableSource() instanceof UIDragSupport && srcTree == null && draggedNode == null && dropEvent.getDragValue() instanceof TreeNode) {
                srcTree = destTree;
                draggedNode = (TreeNode) dropEvent.getDragValue();
                dragNodeKey = srcTree.getTreeNodeRowKey(draggedNode) instanceof TreeRowKey ? (TreeRowKey) srcTree.getTreeNodeRowKey(draggedNode) : null;
            }
            // Note: check if we dropped node on to itself
            if (droppedInNode != null && (droppedInNode.equals(draggedNode))) {
                return;
            }
            //Don't drag below yourself, that would be crazy and recurrsive
            TreeNode currNode = droppedInNode.getParent();
            while (currNode != null) {
                if (currNode.equals(draggedNode)) {
                    return;
                }
                currNode = currNode.getParent();
            }
            if (dropNodeKey != null) {
                // add destination node for rerender
                destTree.addRequestKey(dropNodeKey);
                Object state = null;
                if (dragNodeKey != null) { // Drag from this or other tree
                    TreeNode<Group> dropParentNode = droppedInNode.getParent();
                    Group dragNodeGroup = (Group) draggedNode.getData();
                    Group dropGroup = (Group) droppedInNode.getData();
                    if ( dropGroup.getName().equals(allGroupName) == true )
                    {
                        dropGroup = null; //make a top node
                    }
                    dragNodeGroup.move(dropGroup, null);
                    // 1. remove node from tree
                    state = srcTree.removeNode(dragNodeKey);
                    // 2. add parent for rerender
//                Object rowKey = srcTree.getTreeNodeRowKey(parentNode); drops in parent
                    Object rowKey = srcTree.getTreeNodeRowKey(draggedNode); //drop below instead
                    srcTree.addRequestKey(rowKey);
                } else if (dropEvent.getDragValue() != null) { // We'll probably never do this but this drags from other than a tree
                    // drag source
                    draggedNode = new SortedTreeMap<Group>();
                    draggedNode.setData(dropEvent.getDragValue().toString());
                }
                String groupName = ((Group)draggedNode.getData()).getName();
                destTree.addNode(dropNodeKey, draggedNode, groupName, state);
            }
             AjaxContext ac = AjaxContext.getCurrentInstance();
            // Add destination tree to reRender
            ac.addComponentToAjaxRender(destTree);
        } catch (Exception e) {
            logger.error(e.getMessage(), e);
            getFacesContext().addMessage("Error:", new FacesMessage(FacesMessage.SEVERITY_ERROR, "Error", e.getMessage()));
        }
    }

[blabno]

Here is extract from my app:

{code:xml}
                 <rich:tree id="tree" var="item" selectionType="ajax" toggleType="ajax" treeToggleListener="#{bean.treeToggleListener}"
                                   selectionChangeListener="#{bean.treeSelectionChangeListener}" render="c cNB aSB mB"
                                   nodeType="#{bean.getNodeType(item)}">
                            <!--tM=treeModel-->
                            <rich:treeModelRecursiveAdaptor id="tM" roots="#{bean.treeRoots}"
                                                            nodes="#{bean.getFolders(item)}">
                                <rich:treeNode type="root" expanded="#{bean.expansionMap[item]}" iconCollapsed="/img/folder.png"
                                               iconExpanded="/img/rootExpanded.png">
                                    <a4j:outputPanel>
                                        #{messages['root']}
                                        <rich:dropTarget acceptedTypes="section" dropListener="#{bean.itemDropped}" dropValue="#{item}"
                                                         render="treeC aB"/>
                                    </a4j:outputPanel>
                                </rich:treeNode>
                                <rich:treeNode id="s" type="folder" expanded="#{bean.expansionMap[item]}"
                                               iconCollapsed="/img/folderCollapsed.png" iconExpanded="/img/folderExpanded.png">
                                    <a4j:outputPanel id="sP">
                                        <rich:dragIndicator id="indS" acceptClass="accept" rejectClass="reject" draggingClass="default">
                                            <h:outputText value="#{item.name}"/>
                                        </rich:dragIndicator>
                                        <rich:dragSource type="folder" dragIndicator="indS" dragValue="#{item}"
                                                         rendered="#{bean.changeStructureMode}"/>
                                        <rich:dropTarget id="dropTarget" acceptedTypes="#{bean.getAcceptedTypes(item)}"
                                                         dropListener="#{bean.itemDropped}" dropValue="#{item}" render="treeC aB"/>
                                        <h:outputText value="#{item.name}"/>
                                    </a4j:outputPanel>
                                </rich:treeNode>
                                <rich:treeModelAdaptor nodes="#{bean.getLeafs(item)}" rendered="#{bean.isFolder(item)}"
                                                       leaf="#{true}">
                                    <rich:treeNode type="question" iconLeaf="/img/leaf.png">
                                        <a4j:outputPanel>
                                            <rich:dragIndicator id="indQ" acceptClass="accept" rejectClass="reject" draggingClass="default">
                                                <h:outputText
                                                        value="#{empty item.leaf.id ? messages['newLeaf'] : item.leaf.text}"/>
                                            </rich:dragIndicator>
                                            <rich:dragSource type="leaf" dragIndicator="indQ" dragValue="#{item}"/>
                                            <h:outputText
                                                    value="#{empty item.leaf.id ? messages['newLeaf : item.leaf.text}"/>
                                        </a4j:outputPanel>
                                    </rich:treeNode>
                                </rich:treeModelAdaptor>
                            </rich:treeModelRecursiveAdaptor>
                        </rich:tree>
                        <contextmenu:contextmenu id="cN" mode="ajax" attachTo="tree" rendered="#{bean.viewMode != 'WEIGHT'}">
                            <h:panelGroup id="cNB">
                                <rich:menuItem id="aSC" label="#{messages['addFolder']}" onclick="aSPShow()" mode="client"
                                               rendered="#{!bean.changeStructureMode}"
                                               disabled="#{not bean.addingFolderAllowed}" icon="/img/folderCollapsed.png"/>
                                <rich:menuItem id="dSC" label="#{messages['deleteFolder']}"
                                               rendered="#{!bean.changeStructureMode}" oncomplete="#{rich:component(':dSec')}.show();"
                                               execute="@this" render="treeC c mB aB" disabled="#{not bean.folderSelected}"
                                               icon="/img/remove.png"/>
                                <rich:menuSeparator/>
                                <rich:menuItem id="aQC" label="#{messages['addLeaf']}" mode="server"
                                               action="#{bean.addLeaf}" disabled="#{not bean.addingLeafAllowed}"
                                               icon="/img/leaf.png" render="treeC cmB @form aB quesC"/>
                                <rich:menuItem id="rQC" label="#{messages['removeLeaf']}" icon="/img/remove.png"
                                               onclick="#{rich:component(':dQIP')}.show();" render="dQIPC"
                                               disabled="#{not bean.leafSelected}"/>
                            </h:panelGroup>
                        </contextmenu:contextmenu>
{code:xml}
It has d'n'd of each node except root. Also there is context menu that is rerendered on each tree node selection so that i can have appropriate items disabled for particular tree node.