Sha256: c0e33851ce255238e4d84488311e53ea73137c0172d045b83702ef21a43fbfe2
Contents?: true
Size: 1.04 KB
Versions: 31
Compression:
Stored size: 1.04 KB
Contents
// type can be namespaced, e.g., "click.foo"
// listener can be null for removal
d3_selectionPrototype.on = function(type, listener, capture) {
if (arguments.length < 3) capture = false;
// parse the type specifier
var name = "__on" + type, i = type.indexOf(".");
if (i > 0) type = type.substring(0, i);
// if called with only one argument, return the current listener
if (arguments.length < 2) return (i = this.node()[name]) && i._;
// remove the old event listener, and add the new event listener
return this.each(function(d, i) {
var node = this;
if (node[name]) node.removeEventListener(type, node[name], capture);
if (listener) node.addEventListener(type, node[name] = l, capture);
// wrapped event listener that preserves i
function l(e) {
var o = d3.event; // Events can be reentrant (e.g., focus).
d3.event = e;
try {
listener.call(node, node.__data__, i);
} finally {
d3.event = o;
}
}
// stash the unwrapped listener for retrieval
l._ = listener;
});
};
Version data entries
31 entries across 31 versions & 2 rubygems