CREATING DYNAMIC TREE USING MVVM TREEMODEL

asked 2014-11-07 11:02:54 +0800

jeevaJR7
1 ● 2

updated 2014-11-07 11:20:32 +0800

I have created dynamic tree using mvvm and drag and drop using composer. but the problem is this tree is always closed.I want this tree to always open whenever i load this file from database .is any solution available for that? and another question is can i make this dynamic tree as organaizational treeview in this same program using zk??

tree.zul <zk>

viewModel="@init('com.hierarchy.vm.HierarchyVM') @id('vm')" width="100%" height="100%"
validationMessages="@id('vmsgs')"  >
    <hlayout style="background:silver">
        <div width="100%" height="800px" style="background:silver" align="center">
        <tree  id="tree1" height="100%" width="100%" model="@load(vm.treeModel)" droppable="true" >
                <template name="model" var="emp">
                    <treeitem open="true" >
                        <treerow  droppable="true" draggable="true" apply="com.hierarchy.vm.HierarchyVM"  >
                                <treecell  >
                                    <button width="200px" height="40px" style="color:blue" label="@load(c:cat5(emp.data.name,'             ','[',emp.data.title,']'))"></button> 
                                </treecell>
                        </treerow>
                    </treeitem>
                </template>
                 <zscript><![CDATA[

                    ]]></zscript>
        </tree>
        </div>
    </hlayout>

</zk>

view model.java

private EmployeeData employeeData;

private ListModelList<EmployeeData> employeeList;

public EmployeeData getEmployeeData() {
    return employeeData;
}



public void setEmployeeData(EmployeeData employeeData) {
    this.employeeData = employeeData;
}



public ListModelList<EmployeeData> getEmployeeList() {
    return employeeList;
}



public void setEmployeeList(ListModelList<EmployeeData> employeeList) {
    this.employeeList = employeeList;
}






@Init
public void init(){
     employeeData = new EmployeeData();
     employeeList = new ListModelList<EmployeeData>();

    try {
        Class.forName("com.mysql.jdbc.Driver");
        Connection connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/MyDb","root","root");

        String query = "Select * from EmployeeData";
        PreparedStatement preparedStatement=connection.prepareStatement(query);

        ResultSet resultSet=preparedStatement.executeQuery();
        while(resultSet.next()){
            employeeList.add(new EmployeeData(resultSet.getString("title"),resultSet.getString("name")));
        }
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}



public DefaultTreeModel<EmployeeData> getTreeModel() {
    DefaultTreeModel<EmployeeData> result = genTreeModel();
    return result;
}

public DefaultTreeModel<EmployeeData> genTreeModel() {
    DefaultTreeNode<EmployeeData> root = new DefaultTreeNode<EmployeeData>(null, mockNode(0));
    DefaultTreeModel<EmployeeData> result = new DefaultTreeModel<EmployeeData>(root);
    return result;
}

public ArrayList<DefaultTreeNode<EmployeeData>> mockNode(int level){

    ArrayList<DefaultTreeNode<EmployeeData>> result = new ArrayList<DefaultTreeNode<EmployeeData>>();
        for(int i=0; i<employeeList.size(); i++){

                if(i==level){
                    DefaultTreeNode<EmployeeData> root = new DefaultTreeNode<EmployeeData>
                                                            (employeeList.get(i), mockNode(level+1));
                    if(root!=null){
                        result.add(root);
                    }
                }
        }
    return result;

}


    @SuppressWarnings({ "unchecked" })
    public void doAfterCompose(Component win) throws Exception {

            win.addEventListener("onDrop", new EventListener() {

                @Override
                public void onEvent(Event event) throws Exception {
                    // TODO Auto-generated method stub
                    DropEvent dropevent = ((DropEvent) event);
                    List list = dropevent.getTarget().getParent().getChildren();
                    for (Object element : list) {
                        if (element instanceof Treechildren) {
                            ((Treechildren)element).appendChild((dropevent.getDragged().getParent()));


                        }

                    }

                }

            });
    }

}