JavaScript D3 Context menu with sub-menu context menu with icon in android,context menu with recyclerview,

I am creating context menu based on javascript array with callback functions but getting two issues

unable to hide submenu when mouse moves to an element with no children nodes(On Delete Section).
unable to show submenus in proper hierarchy(After moving to Sibling Section unable to go back to submenu of child section).

My code:

d3.contextMenu = function (menu, openCallback) {

	// create the div element that will hold the context menu
	d3.selectAll('.d3-context-menu').data([1])
		.enter()
		.append('div')
		.attr('class', 'd3-context-menu');

	// close menu
	d3.select('body').on('click.d3-context-menu', function() {
		d3.select('.d3-context-menu').style('display', 'none');
	});

	// this gets executed when a contextmenu event occurs
	return function(data, index) {	
		var elm = this;

		d3.selectAll('.d3-context-menu').html('');
		var list = d3.selectAll('.d3-context-menu').append('ul');
	       	list.selectAll('li').data(menu).enter()
			.append('li')
			.html(function(d) {
				return d.title;
			})
			.on('click', function(d, i) {
				d.onMouseClick(elm, data, index);
			})
            .on('mouseover',function(d,i){
                d.onMouseOver(elm,data,index);
                if(d.chidernItems.length>0 )
                     {
                      d3.select(this).selectAll("ul").remove(); 
                      d3.select(this)
                        .append("ul")
                        .selectAll("li")
                           .data(d.chidernItems)
                            .enter().append("li")
                              .text(function(d) { return d.title; })
                         .on("mouseover", function(d,i){
                                d.onMouseOver(elm,data,index);
                            })
                         .on('click',  function(d, i) {
                                d.onMouseClick(elm, data, index);
                            })
                         .on('mouseout',function(d,i){
                            d3.select(this).remove(); 
                            });
                     }
                 else
                     return false;
              
               
            })
            .on('mouseout',function(d,i){
            if(d.chidernItems.length==0 )
                {
                   d3.select(this).selectAll("ul").remove(); 
                }
                                  
            });
        
          

		// the openCallback allows an action to fire before the menu is displayed
		// an example usage would be closing a tooltip
		if (openCallback) openCallback(data, index);

		// display context menu
		d3.select('.d3-context-menu')
			.style('left', (d3.event.pageX - 2) + 'px')
			.style('top', (d3.event.pageY - 2) + 'px')
			.style('display', 'block');

		d3.event.preventDefault();
	};
};

var menu = [
    {
      title: 'Create Child Section',
      // Exceute Action 
      onMouseClick: function(elm, d, i) {
        console.log('Create Child Section clicked!');
        console.log('The data for this circle is: ' + d);
      },
      onMouseOver: function(elm,d,i){
          console.log('Create Child mouseover  data = ' +d );
      },
      chidernItems: [
           {
              title: 'Vertical',
              // Exceute Action 
              onMouseClick: function(elm, d, i) {
                console.log('Vertical Create Child clicked!');
                console.log('The data for this circle is: ' + d);
              },
              onMouseOver: function(elm,d,i){
                  console.log('Vertical Create Child mouseover  data = ' +d );
              }
           },
           {
              title: 'Horizontal',
              // Exceute Action 
              onMouseClick: function(elm, d, i) {
                console.log('Horizontal Create Child clicked!');
                console.log('The data for this circle is: ' + d);
              },
              onMouseOver: function(elm,d,i){
                  console.log('Horizontal Create Child mouseover  data = ' +d );
              }
           }
      ]
    }, 
    {
      title: 'Create Sibling Section',
       // Exceute Action 
      onMouseClick: function(elm, d, i) {
        console.log('Create Sibling Section clicked!');
        console.log('The data for this circle is: ' + d);
      },
      onMouseOver: function(elm,d,i){
          console.log('Sibling Section mouseover  data = ' +d );
      },
         chidernItems: [
           {
              title: 'Vertical',
              // Exceute Action 
              onMouseClick: function(elm, d, i) {
                console.log('Sibling Vertical clicked!');
                console.log('The data for this circle is: ' + d);
              },
              onMouseOver: function(elm,d,i){
                  console.log('Sibling Vertical mouseover  data = ' +d );
              }
           },
            {
              title: 'Horizontal',
              // Exceute Action 
              onMouseClick: function(elm, d, i) {
                console.log('Horizontal clicked!');
                console.log('The data for this circle is: ' + d);
              },
              onMouseOver: function(elm,d,i){
                  console.log('Horizontal mouseover  data = ' +d );
              }
           }
      ]
        
    },
    {
      title: 'Delete Section',
        
       // Exceute Action 
      onMouseClick: function(elm, d, i) {
        console.log('Delete Section Section clicked!');
        console.log('The data for this circle is: ' + d);
      },
      onMouseOver: function(elm,d,i){
          console.log('Delete Section mouseover  data = ' +d );
      },
           chidernItems: []
    }]

    var data = [1];

    var g = d3.select('body').append('svg')
      .attr('width', 200)
      .attr('height', 400)
      .append('g');

    g.selectAll('circles')
      .data(data)
      .enter()
      .append('circle')
      .attr('r', 30)
      .attr('fill', 'steelblue')
      .attr('cx', function(d) {
        return 100;
      })
      .attr('cy', function(d) {
        return d * 100;
      })
      .on('contextmenu', d3.contextMenu(menu));

.d3-context-menu {
	position: absolute;
	display: none;
	background-color: #f2f2f2;
	border-radius: 4px;
	font-family: Arial, sans-serif;
	font-size: 14px;
	min-width: 150px;
	border: 1px solid #d4d4d4;
	z-index:1200;
}

.d3-context-menu ul {
	list-style-type: none;
	margin: 4px 0px;
	padding: 0px;
	cursor: default;
}

.d3-context-menu ul li {
	padding: 4px 16px;
}

.d3-context-menu ul li:hover {
	background-color: #4677f8;
	color: #fefefe;
}


.d3-context-menu ul li > ul {
    position: absolute; 
    background-color: #f2f2f2; 
    top: 0; 
    left: 175px;
    z-index: -1; 
} 

.d3-context-menu ul li > ul li:hover 
{ 
    background-color: #4677f8;
	color: #fefefe;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.0/d3.min.js"></script>

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