D3.js 检查节点的父节点和子节点
我正在使用d3.js开发angular应用程序。我的代码如下: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
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);