// 

SV.registerLayout('Indented', {
   
    defineOptions() {
        return {
            node: {
                default: {
                    type: 'indented-tree-node',//自定义节点
                    label: '[data]',
                    size: [60, 30],
                    labelOptions: {
                        style: {
                            fontsize: 18,
                            color: '#333'
                        },
                        style: {
                            stroke: '#333',
                            fill: '#95e1d3',
                            cursor: 'pointer',
                        },
                    },
                    
                },
                
            
            },
        
           
            link: {
                
                child: {
                    type: 'polyline',//折线
                    sourceAnchor: 0,
                    targetAnchor: 1,
                    style: {
                        cursor: 'pointer',
                        lineAppendWidth: 4,
                        stroke: '#333',
                        endArrow: {
                            path: G6.Arrow.triangle(8, 6, 0),
                            fill: '#333'
                        },
                        startArrow: {
                            path: G6.Arrow.circle(2, -1),
                            fill: '#333'
                        }
                    }
                }

            },
           
            layout: {
                xInterval: 40,
                yInterval: 10,
            },
           
        };
    },
    /**
     * 对子树进行递归布局
     */
    //判断是否是B节点
   
    layoutItem(node,elements,layoutOptions)
{
        if (!node) {
            return null;
        }
        
     
    
        let width = 60,
            height = 40;
            
            
           
            
           
  
//还是要分第一个节点
        if (node.child) {//如果是父节点//node==B
            let childLength = node.child.length;
            console.log(childLength);
            for (let i = 0; i < childLength; i++) {
                parent = node;
                
              
                // console.log(node.child[i].get('parent'));
                    
                node.child[i].set('x', parent.get('x') + width + layoutOptions.xInterval);
                console.log(layoutOptions.xInterval);
                if (this.isFirstChild(elements, node.child[i]))//如果是B节点{
                
                {
                    
                    node.child[i].set('y', 0 + height +layoutOptions.yInterval);
                    let tempY = node.child[i].get('y')
                    console.log(tempY);
                }
                else {
                    node.child[i].set('y', tempY + height + layoutOptions.yInterval)
               }
                
                tempY = node.child[i].get('y')
                console.log(tempY);//80
                    

                   
                    
                    if (node.child[i].child) {
                    
                       
                        this.LayoutChild(node.child[i],layoutOptions);//node.child[i]==c
                        
                    }
                    if (!(node.child[i].child)) {
                       
                        // tempY= node.child[i].get('y')
                        
                        // console.log(node.get('tempY'));
                        tempY = node.child[i].get('y')

                    }
                
             
              
            }
        
        }

    },
        
        

    isFirstChild(elements,node)
    {
        
        console.log(elements);
        let root = elements[0];
           
        for (g = 0; g < root.child.length; g++)
        {
            if (root.child[0].id === node.id)
            {
                return true;
                }
            }

    },

    LayoutChild(node,layoutOptions)  //node.child[0]=B
      
    {   
        
        let parent = node;//b
       
        
   //70  
                  
       //当前节点的y坐标
       //140  C=140
       let xInterval = layoutOptions.xInterval,
       yInterval = layoutOptions.yInterval;
        for (let k = 0; k < node.child.length; k++) {
          
            if (!(node.child[k].child))
            {    
           
                node.child[k].set('x', parent.get('x') + 60 + xInterval)
                console.log( node);
                node.child[k].set('y', tempY + 40 +yInterval)//D/F的坐标
                tempY = node.child[k].get('y')
                console.log(tempY);
                
                
        
                
            }//node.child[k=g]
            if (node.child[k].child) {
                node.child[k].set('x', parent.get('x') + 60 +xInterval)
                node.child[k].set('y', tempY + 40 +yInterval )//c
                tempY = node.child[k].get('y');
                console.log(node.child[k]);
                this.LayoutChild(node.child[k], layoutOptions)
            }
                        
                    
        
                      
        }
    },
    //返回第一层子节点
    // isFirstChild(elements,node) {
    //     let Root = elements[0];
    //     console.log(Root);
    //     console.log(node.id);
    //     console.log(node);
    //     for (g = 0; g < Root.child.length; g++)
    //     {    
            
    //         if (Root.child[g].id === node.id) {
    //             return node;
    //  }
        
    //         }
    // },
          
    layout(elements, layoutOptions) {
       
        let root = elements[0];
       
        root.set({
            x: 0,
            y: 0
        });
        
        console.log(root.get('x'));
        console.log(root.get('y'));
      
        this.layoutItem(root,elements,layoutOptions);

    }

});