Spaces:
Sleeping
Sleeping
File size: 2,512 Bytes
e7b2eb4 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 | import "../format/collapse";
import "../format/requote";
import "selection";
d3_selectionPrototype.classed = function(name, value) {
if (arguments.length < 2) {
// For classed(string), return true only if the first node has the specified
// class or classes. Note that even if the browser supports DOMTokenList, it
// probably doesn't support it on SVG elements (which can be animated).
if (typeof name === "string") {
var node = this.node(),
n = (name = d3_selection_classes(name)).length,
i = -1;
if (value = node.classList) {
while (++i < n) if (!value.contains(name[i])) return false;
} else {
value = node.getAttribute("class");
while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false;
}
return true;
}
// For classed(object), the object specifies the names of classes to add or
// remove. The values may be functions that are evaluated for each element.
for (value in name) this.each(d3_selection_classed(value, name[value]));
return this;
}
// Otherwise, both a name and a value are specified, and are handled as below.
return this.each(d3_selection_classed(name, value));
};
function d3_selection_classedRe(name) {
return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g");
}
function d3_selection_classes(name) {
return (name + "").trim().split(/^|\s+/);
}
// Multiple class names are allowed (e.g., "foo bar").
function d3_selection_classed(name, value) {
name = d3_selection_classes(name).map(d3_selection_classedName);
var n = name.length;
function classedConstant() {
var i = -1;
while (++i < n) name[i](this, value);
}
// When the value is a function, the function is still evaluated only once per
// element even if there are multiple class names.
function classedFunction() {
var i = -1, x = value.apply(this, arguments);
while (++i < n) name[i](this, x);
}
return typeof value === "function"
? classedFunction
: classedConstant;
}
function d3_selection_classedName(name) {
var re = d3_selection_classedRe(name);
return function(node, value) {
if (c = node.classList) return value ? c.add(name) : c.remove(name);
var c = node.getAttribute("class") || "";
if (value) {
re.lastIndex = 0;
if (!re.test(c)) node.setAttribute("class", d3_collapse(c + " " + name));
} else {
node.setAttribute("class", d3_collapse(c.replace(re, " ")));
}
};
}
|