250 lines
6.8 KiB
JavaScript
250 lines
6.8 KiB
JavaScript
(function($) {
|
|
$.fn.connections = function(options) {
|
|
if (options === "update") {
|
|
return processConnections(update, this);
|
|
} else if (options === "remove") {
|
|
return processConnections(destroy, this);
|
|
} else {
|
|
options = $.extend(
|
|
true,
|
|
{
|
|
borderClasses: {},
|
|
class: "connection",
|
|
css: {},
|
|
from: this,
|
|
tag: "connection",
|
|
to: this,
|
|
within: ":root"
|
|
},
|
|
options
|
|
);
|
|
connect(options);
|
|
return this;
|
|
}
|
|
};
|
|
|
|
$.event.special.connections = {
|
|
teardown: function(namespaces) {
|
|
processConnections(destroy, $(this));
|
|
}
|
|
};
|
|
|
|
var connect = function(options) {
|
|
var borderClasses = options.borderClasses;
|
|
var tag = options.tag;
|
|
var end1 = $(options.from);
|
|
var end2 = $(options.to);
|
|
var within = $(options.within);
|
|
delete options.borderClasses;
|
|
delete options.tag;
|
|
delete options.from;
|
|
delete options.to;
|
|
delete options.within;
|
|
within.each(function() {
|
|
var container = this;
|
|
var done = new Array();
|
|
end1.each(function() {
|
|
var node = this;
|
|
done.push(this);
|
|
end2.not(done).each(function() {
|
|
createConnection(
|
|
container,
|
|
[node, this],
|
|
tag,
|
|
borderClasses,
|
|
options
|
|
);
|
|
});
|
|
});
|
|
});
|
|
};
|
|
|
|
var createConnection = function(
|
|
container,
|
|
nodes,
|
|
tag,
|
|
borderClasses,
|
|
options
|
|
) {
|
|
var css = $.extend({ position: "absolute" }, options.css);
|
|
var connection = $("<" + tag + "/>", options).css(css);
|
|
connection.appendTo(container);
|
|
|
|
var border_w = (connection.outerWidth() - connection.innerWidth()) / 2;
|
|
var border_h = (connection.outerHeight() - connection.innerHeight()) / 2;
|
|
|
|
if (border_w <= 0 && border_h <= 0) {
|
|
border_w = border_h = 1;
|
|
}
|
|
|
|
var data = {
|
|
borderClasses: borderClasses,
|
|
border_h: border_h,
|
|
border_w: border_w,
|
|
node_from: $(nodes[0]),
|
|
node_to: $(nodes[1]),
|
|
nodes_dom: nodes,
|
|
css: css
|
|
};
|
|
|
|
if ("none" === connection.css("border-top-style")) {
|
|
data.css.borderStyle = "solid";
|
|
}
|
|
$.data(connection.get(0), "connection", data);
|
|
$.data(connection.get(0), "connections", [connection.get(0)]);
|
|
for (var i = 0; i < 2; i++) {
|
|
var connections = connection.add($.data(nodes[i], "connections")).get();
|
|
$.data(nodes[i], "connections", connections);
|
|
if (connections.length == 1) {
|
|
$(nodes[i]).on("connections.connections", false);
|
|
}
|
|
}
|
|
update(connection.get(0));
|
|
};
|
|
|
|
var destroy = function(connection) {
|
|
var nodes = $.data(connection, "connection").nodes_dom;
|
|
for (var i = 0; i < 2; i++) {
|
|
var connections = $($.data(nodes[i], "connections"))
|
|
.not(connection)
|
|
.get();
|
|
$.data(nodes[i], "connections", connections);
|
|
}
|
|
$(connection).remove();
|
|
};
|
|
|
|
var getState = function(data) {
|
|
data.rect_from = data.nodes_dom[0].getBoundingClientRect();
|
|
data.rect_to = data.nodes_dom[1].getBoundingClientRect();
|
|
var cached = data.cache;
|
|
data.cache = [
|
|
data.rect_from.top,
|
|
data.rect_from.right,
|
|
data.rect_from.bottom,
|
|
data.rect_from.left,
|
|
data.rect_to.top,
|
|
data.rect_to.right,
|
|
data.rect_to.bottom,
|
|
data.rect_to.left
|
|
];
|
|
data.hidden =
|
|
0 === (data.cache[0] | data.cache[1] | data.cache[2] | data.cache[3]) ||
|
|
0 === (data.cache[4] | data.cache[5] | data.cache[6] | data.cache[7]);
|
|
data.unmodified = true;
|
|
if (cached === undefined) {
|
|
return (data.unmodified = false);
|
|
}
|
|
for (var i = 0; i < 8; i++) {
|
|
if (cached[i] !== data.cache[i]) {
|
|
return (data.unmodified = false);
|
|
}
|
|
}
|
|
};
|
|
|
|
var update = function(connection) {
|
|
var data = $.data(connection, "connection");
|
|
getState(data);
|
|
if (data.unmodified) {
|
|
return;
|
|
}
|
|
var border_h = data.border_h;
|
|
var border_w = data.border_w;
|
|
var from = data.rect_from;
|
|
var to = data.rect_to;
|
|
var b = (from.bottom + from.top) / 2;
|
|
var r = (to.left + to.right) / 2;
|
|
var t = (to.bottom + to.top) / 2;
|
|
var l = (from.left + from.right) / 2;
|
|
|
|
var h = ["right", "left"];
|
|
if (l > r) {
|
|
h = ["left", "right"];
|
|
var x = Math.max(r - border_w / 2, Math.min(from.right, to.right));
|
|
r = l + border_w / 2;
|
|
l = x;
|
|
} else {
|
|
l -= border_w / 2;
|
|
r = Math.min(r + border_w / 2, Math.max(from.left, to.left));
|
|
}
|
|
var v = ["bottom", "top"];
|
|
if (t > b) {
|
|
v = ["top", "bottom"];
|
|
var x = Math.max(b - border_h / 2, Math.min(from.bottom, to.bottom));
|
|
b = t + border_h / 2;
|
|
t = x;
|
|
} else {
|
|
b = Math.min(b, Math.max(from.top, to.top));
|
|
t -= border_h / 2;
|
|
}
|
|
var width = r - l;
|
|
var height = b - t;
|
|
if (width < border_w) {
|
|
t = Math.max(t, Math.min(from.bottom, to.bottom));
|
|
b = Math.min(b, Math.max(from.top, to.top));
|
|
l = Math.max(from.left, to.left);
|
|
r = Math.min(from.right, to.right);
|
|
r = l = (l + r - border_w) / 2;
|
|
}
|
|
if (height < border_h) {
|
|
l = Math.max(l, Math.min(from.right, to.right));
|
|
r = Math.min(r, Math.max(from.left, to.left));
|
|
t = Math.max(from.top, to.top);
|
|
b = Math.min(from.bottom, to.bottom);
|
|
b = t = (t + b - border_h) / 2;
|
|
}
|
|
width = r - l;
|
|
height = b - t;
|
|
width <= 0 && (border_h = 0);
|
|
height <= 0 && (border_w = 0);
|
|
var style =
|
|
"border-" +
|
|
v[0] +
|
|
"-" +
|
|
h[0] +
|
|
"-radius: 0;" +
|
|
"border-" +
|
|
v[0] +
|
|
"-" +
|
|
h[1] +
|
|
"-radius: 0;" +
|
|
"border-" +
|
|
v[1] +
|
|
"-" +
|
|
h[0] +
|
|
"-radius: 0;";
|
|
(border_h <= 0 || border_w <= 0) &&
|
|
(style += "border-" + v[1] + "-" + h[1] + "-radius: 0;");
|
|
if (data.hidden) {
|
|
style += "display: none;";
|
|
} else {
|
|
data.css["border-" + v[0] + "-width"] = 0;
|
|
data.css["border-" + h[0] + "-width"] = 0;
|
|
data.css["border-" + v[1] + "-width"] = border_h;
|
|
data.css["border-" + h[1] + "-width"] = border_w;
|
|
var current_rect = connection.getBoundingClientRect();
|
|
data.css.left = connection.offsetLeft + l - current_rect.left;
|
|
data.css.top = connection.offsetTop + t - current_rect.top;
|
|
data.css.width = width - border_w;
|
|
data.css.height = height - border_h;
|
|
}
|
|
var bc = data.borderClasses;
|
|
$(connection)
|
|
.removeClass(bc[v[0]])
|
|
.removeClass(bc[h[0]])
|
|
.addClass(bc[v[1]])
|
|
.addClass(bc[h[1]])
|
|
.attr("style", style)
|
|
.css(data.css);
|
|
};
|
|
|
|
var processConnections = function(method, elements) {
|
|
return elements.each(function() {
|
|
var connections = $.data(this, "connections");
|
|
if (connections instanceof Array) {
|
|
for (var i = 0, len = connections.length; i < len; i++) {
|
|
method(connections[i]);
|
|
}
|
|
}
|
|
});
|
|
};
|
|
})(jQuery);
|