我目前有一个带有节点的D3树布局,可以在运行时添加节点,并在每个节点后附加文本。除node.on(..)
等node.on("mousedown" ....)
函数外,几乎所有工作都正常。问题是节点本身不响应点击,附加的文本也是如此。 I.E.单击附加文本时会触发node.on("mousedown",...)
,而不是实际节点。任何指导将不胜感激!核心函数的代码如下所示,它只接受JSON样式的对象和父ID,然后将该JSON数据作为给定父项的子项插入树中:
function update(record_to_add, parent) {
if (nodes.length >= 500) return clearInterval(timer);
// Add a new node to a random parent.
var n = {id: nodes.length, Username: record_to_add.Username},
p = nodes[parent];
if (p.children) p.children.push(n); else p.children = [n];
nodes.push(n);
// Recompute the layout and data join.
node = node.data(tree.nodes(root), function(d) { return d.id; });
link = link.data(tree.links(nodes), function(d) { return d.source.id + "-" + d.target.id; });
// Add entering nodes in the parent’s old position.
node.enter().append("circle", "g")
.attr("class", "node")
.attr("r", 10)
.attr("cx", function(d) { return d.parent.px; })
.attr("cy", function(d) { return d.parent.py; });
// Add entering links in the parent’s old position.
link.enter().insert("path", ".node")
.attr("class", "link")
.attr("d", function(d) {
var o = {x: d.source.px, y: d.source.py};
return diagonal({source: o, target: o});
});
node.enter().insert("text")
.attr("x", function(d) { return (d.parent.px);})
.attr("y", function(d) { return (d.parent.py);})
.text(function(d) { return d.Username; });
node.on("mousedown", function (d) {
var g = d3.select(this); // The node
// The class is used to remove the additional text later
console.log("FOO");
});
node.on("mouseover", function (d) {
var g = d3.select(this); // The node
// The class is used to remove the additional text later
var info = g.append('text')
.classed('info', true)
.attr('x', 20)
.attr('y', 10)
.text('More info');
});
// Transition nodes and links to their new positions.
var t = svg.transition()
.duration(duration);
t.selectAll(".link")
.attr("d", diagonal);
t.selectAll(".node")
.attr("cx", function(d) { return d.px = d.x; })
.attr("cy", function(d) { return d.py = d.y; });
t.selectAll("text")
.style("fill-opacity", 1)
.attr("x", function(d) { return d.px = d.x; })
.attr("y", function(d) { return d.py = d.y; });
}
答案 0 :(得分:2)
为避免文本元素妨碍事件捕获,您可以尝试配置文本元素以忽略指针事件:
svg text {
pointer-events: none;
}
您也可以直接使用d3:
textSelection
.attr('pointer-events', 'none');