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define(['rz_core', 'Bacon'],
function(rz_core, Bacon) {
function get_main_graph()
{
// circular dependency on rz_core, so require.js cannot solve it.
if (rz_core === undefined) {
rz_core = require('rz_core');
listen_on_diff_bus(rz_core.main_graph.diffBus);
}
return rz_core.main_graph;
}
var root_nodes = [], // these are the nodes that are requested via update
selected_nodes = [], // these are the nodes that are highlighted, generally the neighbours of selection_request
selected_nodes__by_id = {},
selectionChangedBus = new Bacon.Bus();
function listen_on_diff_bus(diffBus)
{
diffBus
.filter(".node_id_set_rm")
.onValue(function (diff) {
var node_node_cmp = (function (a, b) { return a.id > b.id; }),
node_id_cmp = (function (a, b) { return a.id === b ? 0 : (a.id > b ? 1 : -1); });
updateSelectedNodesBus(sortedArrayDiff(selected_nodes.sort(node_node_cmp),
diff.node_id_set_rm.sort(), node_id_cmp));
});
}
function sortedArrayDiff(a, b, a_cmp_b)
{
var a_i = 0,
b_i = 0,
ret = [];
while (a_i < a.length && b_i < b.length) {
while (a_i < a.length && a_cmp_b(a[a_i], b[b_i]) == -1) {
ret.push(a[a_i]);
a_i += 1;
}
while (b_i < b.length && a_i < a.length && a_cmp_b(a[a_i], b[b_i]) == 0) {
b_i += 1;
a_i += 1;
}
while (b_i < b.length && a_cmp_b(a[a_i], b[b_i]) == 1) {
b_i += 1;
}
}
for (; a_i < a.length ; ++a_i) {
ret.push(a[a_i]);
}
return ret;
}
function updateSelectedNodesBus(new_selected_nodes)
{
selected_nodes = new_selected_nodes;
selected_nodes__by_id = selected_nodes.reduce(
function(d, v) {
d[v.id] = v;
return d;
}, {});
selectionChangedBus.push(selected_nodes);
}
function byVisitors(node_selector, link_selector) {
var new_selected_nodes = get_main_graph().find__by_visitors(node_selector, link_selector);
clear();
connectedComponent(new_selected_nodes);
}
function connectedComponent(nodes) {
var connected = get_main_graph().getConnectedNodesAndLinks(nodes, 1),
i,
node,
link,
data;
for (i = 0 ; i < connected.nodes.length ; ++i) {
data = connected.nodes[i];
node = data.node;
switch (data.type) {
case 'exit':
node.state = 'exit';
break;
case 'enter':
node.state = 'enter';
break;
};
}
for (i = 0 ; i < connected.links.length ; ++i) {
data = connected.links[i];
link = data.link;
switch (data.type) {
case 'exit':
link.state = 'exit';
break;
case 'enter':
link.state = 'enter';
break;
};
}
nodes.forEach(function (n) { n.state = 'chosen'; });
selected_nodes = connected.nodes.map(function (d) { return d.node; }).concat(nodes.slice());
updateSelectedNodesBus(selected_nodes);
}
var node_selected = function(node) {
return selected_nodes__by_id[node.id] !== undefined;
}
var link_selected = function(link) {
return node_selected(link.__src) && node_selected(link.__dst);
}
var selected_class__node = function(node) {
return selected_nodes.length > 0 ? (node_selected(node) ? "selected" : "notselected") : "";
}
var selected_class__link = function(link) {
return selected_nodes.length > 0 ? (link_selected(link) ? "selected" : "notselected") : "";
}
var clear = function() {
root_nodes = [];
updateSelectedNodesBus([]);
}
function arr_compare(a1, a2)
{
if (a1.length != a2.length) {
return false;
}
for (var i = 0 ; i < a1.length ; ++i) {
if (a1[i] != a2[i]) {
return false;
}
}
return true;
}
var update = function(nodes) {
var set = !arr_compare(nodes, root_nodes);
clear();
if (set) {
root_nodes = nodes;
connectedComponent(nodes);
}
}
return {
byVisitors: byVisitors,
connectedComponent: connectedComponent,
clear: clear,
update: update,
selected_class__node: selected_class__node,
selected_class__link: selected_class__link,
node_selected: node_selected,
link_selected: link_selected,
selectionChangedBus: selectionChangedBus,
__get_root_nodes: function() { return root_nodes; },
__get_selected_nodes: function() { return selected_nodes; },
};
});
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