D3.js 检查节点的父节点和子节点

D3.js 检查节点的父节点和子节点,d3.js,D3.js,我正在使用d3.js开发angular应用程序。我的代码如下: const treeData={ “id”:1, “名称”:“根”, “checked”:false, “颜色”:“白色”, “儿童”:[ { “id”:2, “名称”:“叶A”, “checked”:false, “颜色”:“红色”, “儿童”:[ { “id”:3, “名称”:“A-1”, “checked”:false, “颜色”:“棕色”, }, { “id”:4, “名称”:“A-2”, “checked”:false

我正在使用d3.js开发angular应用程序。我的代码如下:

const treeData={
“id”:1,
“名称”:“根”,
“checked”:false,
“颜色”:“白色”,
“儿童”:[
{
“id”:2,
“名称”:“叶A”,
“checked”:false,
“颜色”:“红色”,
“儿童”:[
{
“id”:3,
“名称”:“A-1”,
“checked”:false,
“颜色”:“棕色”,
}, 
{
“id”:4,
“名称”:“A-2”,
“checked”:false,
“颜色”:“橙色”,
},
{
“id”:5,
“名称”:“A-3”,
“checked”:false,
“颜色”:“黄色”,
},
]
}, 
{
“id”:6,
“名称”:“叶B”,
“checked”:false,
“颜色”:“绿色”,
“儿童”:[
{
“id”:7,
“名称”:“B-1”,
“checked”:false,
“颜色”:“#00ff40”,
}, 
{
“id”:8,
“名称”:“B-2”,
“checked”:false,
“颜色”:“#00ff80”,
}
]
}
]  
};
常量边距={
前20名,
右:120,,
底数:20,
左:120
};
常量宽度=600-margin.right-margin.left;
常数高度=400-margin.top-margin.bottom;
变量i=0,持续时间=750;
const tree=d3.layout.tree()
.尺寸([高度、宽度]);
const diagonal=d3.svg.diagonal()
.投影(功能(d){
返回[d.y,d.x];
});
const svg=d3.select(“body”).append(“svg”)
.attr(“宽度”,宽度+边距。右侧+边距。左侧)
.attr(“高度”,高度+边距。顶部+边距。底部);
const container=svg.append(“g”)
.attr(“转换”、“平移”(+margin.left+)、“+margin.top+”);
const root=treeData;
root.x0=高度/2;
root.y0=0;
//在第二层之后崩溃
根。子。forEach(塌陷);
更新(根);
//折叠节点及其所有子节点
功能崩溃(d){
如果(d.儿童){
d、 _children=d.children
d、 _儿童。forEach(崩溃)
d、 children=null
}
}
函数展开(d){
如果(d.(儿童){
d、 孩子们
d、 _children=null
}
}
函数更新(源){
//计算新的树布局。
const nodes=tree.nodes(root.reverse();
常量链接=树链接(节点);
//为固定深度进行规格化。
nodes.forEach(函数(d){
d、 y=d.深度*200;
});
//更新节点…
const node=container.selectAll(“g.node”)
.数据(节点,d=>d.id);
//在父节点的上一个位置输入任何新节点。
var nodeEnter=node.enter()
.附加(“g”)
.attr(“类”、“节点”)
.attr(“transform”,d=>`translate(${source.y0},${source.x0})`)
.on(“单击”,onclick节点);
nodeEnter.append(“圆”)
.attr(“r”,10)
.样式(“填充”,d=>d.颜色);
nodeEnter.append(“文本”)
.attr(“x”,20)
.attr(“dy”,4)
.attr(“文本锚定”、“开始”)
.text(d=>d.name);
追加('foreignObject')
.attr('width','20')
.attr('height','20')
.attr(“x”,-30)
.attr(“y”,-8)
.append('xhtml:input')
.attr('type','checkbox')
.attr(“id”,d=>`checkbox-${d.id}`)
.on(“单击”,单击复选框)
//将节点转换到其新位置。
var nodeUpdate=node.transition()
.持续时间(持续时间)
.attr(“转换”,函数(d){
返回“translate”(“+d.y+”,“+d.x+”);
});
// ???
节点更新。选择(“圆圈”)
.风格(“笔划”,“黑色”);
节点更新。每个(功能(d){
const cb=d3.select(this).select('[type=“checkbox”]').node();
cb.checked=d.checked;
cb.disabled=isParentChecked(d);
});
nodeUpdate.select(“文本”)
.样式(“填充不透明度”,1);
//将退出节点转换到父节点的新位置。
const nodeExit=node.exit().transition()
.持续时间(持续时间)
.attr(“转换”,函数(d){
返回“translate”(“+source.y+”,“+source.x+”);
})
.remove();
nodeExit.select(“圆”)
.attr(“r”,0);
nodeExit.select(“文本”)
.style(“填充不透明度”,0);
//更新链接…
var link=container.selectAll(“path.link”)
.data(links,d=>d.target.id);
//在父对象的上一个位置输入任何新链接。
link.enter()插入(“路径”,“g”)
.attr(“类”、“链接”)
.attr(“笔划宽度”,1)
.attr(“d”,函数(d){
变量o={
x:source.x0,
y:source.y0
};
返回对角线({
资料来源:o,
目标:o
});
})
.attr(“不透明度”,“0.3”)
.风格(“笔划”,“黑色”);
//过渡链接到他们的新位置。
link.transition()
.持续时间(持续时间)
.attr(“d”,对角线);
//将退出节点转换到父节点的新位置。
link.exit().transition()
.持续时间(持续时间)
.attr(“d”,函数(d){
变量o={
x:source.x,
y:来源,y
};
返回对角线({
资料来源:o,
目标:o
});
})
.remove();
//将旧位置隐藏起来,以便过渡。
nodes.forEach(函数(d){
d、 x0=d.x;
d、 y0=d.y;
});
}
函数findParent(基准){
如果(基准深度<2){
返回datum.name
}否则{
返回findParent(datum.parent)
}
}
函数FindParentLink(基准){
如果(基准面目标深度<2){
返回datum.target.name
}否则{
返回findParent(datum.target.parent)
}
}
const checkNode=(d,checked,byParent)=>{
d、 已检查=已检查;
const children=d.children | | d.| u children;
if(儿童)
forEach(child=>checkNode(child,checked,true));
如果(!byParent&&checked&&d.parent){
const sides=d.parent.children | | d.parent._children;
兄弟姐妹。forEach(兄弟姐妹=>{
if(同级id!==d.id){
console.log('UNCHECK:',同级)
checkNode(同级、false、true);
}
});
}  
}
函数isParentChecked(d){
如果(!d.parent){
返回false;
}
如果(d.父项已选中){
返回true;
}
回来
const treeData = {
  "id": 1,
  "name": "Root",
  "checked": false,
  "color": "white",
  "children": [
    {
      "id": 2,
      "name": "Leaf A",
      "checked": false,
      "color": "red",
        "children": [
        {
          "id": 3,
          "name": "A - 1",
          "checked": false,
          "color": "brown",
          }, 
        {
          "id": 4,
          "name": "A - 2",
          "checked": false,
          "color": "orange",
          },
        {
          "id": 5,
          "name": "A - 3",
                "checked": false,
          "color": "yellow",
          },
      ]
    }, 
    {
      "id": 6,
        "name": "Leaf B",
      "checked": false,
      "color": "green",
        "children": [
        {
          "id": 7,
          "name": "B - 1",
          "checked": false,
          "color": "#00ff40",
          }, 
        {
          "id": 8,
          "name": "B - 2",
          "checked": false,
          "color": "#00ff80",
          }
      ]
    }
  ]  
};

const margin = {
    top: 20,
    right: 120,
    bottom: 20,
    left: 120
  };
  
const width = 600 - margin.right - margin.left;
const height = 400 - margin.top - margin.bottom;

var i = 0,duration = 750;
  
const tree = d3.layout.tree()
  .size([height, width]);

const diagonal = d3.svg.diagonal()
  .projection(function(d) {
    return [d.y, d.x];
  });


const svg = d3.select("body").append("svg")
  .attr("width", width + margin.right + margin.left)
  .attr("height", height + margin.top + margin.bottom);
  
const container = svg.append("g")
  .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

const root = treeData;
root.x0 = height / 2;
root.y0 = 0;

// Collapse after the second level
root.children.forEach(collapse);

update(root);

// Collapse the node and all it's children
function collapse(d) {
  if (d.children) {
    d._children = d.children
    d._children.forEach(collapse)
    d.children = null
  }
}

function expand(d) {
  if (d._children) {
    d.children = d._children
    d._children = null
  }
}

function update(source) {
  // Compute the new tree layout.
  const nodes = tree.nodes(root).reverse();
  const links = tree.links(nodes);

  // Normalize for fixed-depth.
  nodes.forEach(function(d) {
    d.y = d.depth * 200;
  });

  // Update the nodes…
  const node = container.selectAll("g.node")
    .data(nodes, d => d.id);

  // Enter any new nodes at the parent's previous position.
  var nodeEnter = node.enter()
    .append("g")
    .attr("class", "node")
    .attr("transform", d => `translate(${source.y0},${source.x0})`)
    .on("click", onClickNode);

  nodeEnter.append("circle")
    .attr("r", 10)
    .style("fill", d => d.color);

  nodeEnter.append("text")
    .attr("x", 20)
    .attr("dy", 4)
    .attr("text-anchor", "start")
    .text(d => d.name);
    
  nodeEnter.append('foreignObject')
    .attr('width', '20')
    .attr('height', '20')
    .attr("x", -30)
    .attr("y", -8)
    .append('xhtml:input')
    .attr('type', 'checkbox')
    .attr("id", d => `checkbox-${d.id}`)
    .on("click", onClickCheckbox)

  // Transition nodes to their new position.
  var nodeUpdate = node.transition()
    .duration(duration)
    .attr("transform", function(d) {
      return "translate(" + d.y + "," + d.x + ")";
    });

  // ???
  nodeUpdate.select("circle")
    .style("stroke", 'black');
  nodeUpdate.each(function(d) {
    const cb = d3.select(this).select('[type="checkbox"]').node();
    cb.checked = d.checked;
    cb.disabled = isParentChecked(d);
  });
    
  nodeUpdate.select("text")
    .style("fill-opacity", 1);

  // Transition exiting nodes to the parent's new position.
  const nodeExit = node.exit().transition()
    .duration(duration)
    .attr("transform", function(d) {
      return "translate(" + source.y + "," + source.x + ")";
    })
    .remove();

  nodeExit.select("circle")
    .attr("r", 0);

  nodeExit.select("text")
    .style("fill-opacity", 0);

  // Update the links…
  var link = container.selectAll("path.link")
    .data(links, d => d.target.id);

  // Enter any new links at the parent's previous position.
  link.enter().insert("path", "g")
    .attr("class", "link")
    .attr("stroke-width", 1)
    .attr("d", function(d) {
      var o = {
        x: source.x0,
        y: source.y0
      };
      return diagonal({
        source: o,
        target: o
      });
    })
    .attr("opacity", "0.3")
    .style("stroke", 'black');

  // Transition links to their new position.
  link.transition()
    .duration(duration)
    .attr("d", diagonal);

  // Transition exiting nodes to the parent's new position.
  link.exit().transition()
    .duration(duration)
    .attr("d", function(d) {
      var o = {
        x: source.x,
        y: source.y
      };
      return diagonal({
        source: o,
        target: o
      });
    })
    .remove();

  // Stash the old positions for transition.
  nodes.forEach(function(d) {
    d.x0 = d.x;
    d.y0 = d.y;
  });
}

function findParent(datum) {
  if (datum.depth < 2) {
    return datum.name
  } else {
    return findParent(datum.parent)
  }
}

function findParentLinks(datum) {
  if (datum.target.depth < 2) {
    return datum.target.name
  } else {
    return findParent(datum.target.parent)
  }
}

const checkNode = (d, checked, byParent) => {
  d.checked = checked;
  const children = d.children || d._children;
  if (children)
    children.forEach(child => checkNode(child, checked, true));
    
  if (!byParent && checked && d.parent) {
    const siblings = d.parent.children || d.parent._children;
    
    siblings.forEach(sibling => {
      if (sibling.id !== d.id) {
        console.log('UNCHECK: ', sibling)
        checkNode(sibling, false, true);
      }
    });
    
  }  
  
}

function isParentChecked (d) {
  if (!d.parent) {
    return false;
  }
  if (d.parent.checked) {
    return true;
  }
  return isParentChecked(d.parent);
}

function onClickCheckbox(d) {
  d3.event.stopPropagation();
  checkNode(d, d3.event.target.checked, false);
  console.log('ROOT: ', root);
  update(root);   
}


// Toggle children on click.
function onClickNode(d) {
  if (d.children) {
    d._children = d.children;
    d.children = null;
  } 
  else {
    d.children = d._children;
    d._children = null;
  }
  update(d);
}

const findNode = (parent, id) => {
  if (parent.id === id)
    return [parent];
    
  const children = parent.children || parent._children;
  if (children) {
        for (let child of children) {
        const found = findNode(child, id);
        if (found)
          return [...found, parent];
      }
  }
  return null;
}

const selectNode = id => {
   const node = findNode(treeData, id);
   if (node) {
      for (let index = node.length - 1; index >= 0; index--) {
        expand(node[index]);
      }
      checkNode(node[0], true, false);
      update(root);
   }
};

setTimeout(() => selectNode(2), 2000);
setTimeout(() => selectNode(6), 4000);