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"use strict"
/**
* core model module - currently unused
*/
define(['util'], function(util) {
/**
* return a random id
*/
var random_id;
var random_id__hash = function() {
return Math.random().toString(36).substring(2, 10);
}
var random_id__seq = function () {
var id = 0;
function get_next() {
var next = id;
id += 1;
return next;
}
return get_next;
}
function random_node_name() {
return random_id__hash();
}
function init(config){
if (config['rand_id_generator'] == 'hash') {
random_id = random_id__hash;
}
if (config['rand_id_generator'] == 'seq') {
random_id = random_id__seq();
}
}
function Node() {
}
Node.prototype.equals = function(other_node){
return this.id == other_node.id;
}
function Link() {
}
// adapt Link to force_layout create __src,__dst aliases
Link.prototype.__defineGetter__('source', function(){
return this.__src;
});
Link.prototype.__defineGetter__('target', function(){
return this.__dst;
});
/**
* the most flexible way to create a node: - perform spec field validation -
* fill-in missing spec fields
*/
function create_node_from_spec(node_spec) {
var ret = new Node();
if (undefined != node_spec.id) {
// reuse id if present
__set_obj_id(ret, node_spec.id);
}
util.assert(undefined != node_spec.name, 'create_node_from_spec: name missing');
ret.name = node_spec.name;
// type
if (undefined == node_spec.type) {
console.debug('create_node_from_spec: undefined type, falling back to \'perm\'');
node_spec.type = 'perm';
}
ret.type = node_spec.type;
// status
ret.status = node_spec.status || 'unknown';
// visual
ret.x = node_spec.x;
ret.y = node_spec.y;
// other
ret.state = node_spec.state;
ret.url = node_spec.url;
ret.start = node_spec.start;
ret.end = node_spec.end;
return ret;
}
function __set_obj_id(obj, id) {
Object.defineProperty(obj, "id", {
value: id,
enumerable: true,
writable: false
});
}
/**
* @param node_spec: id must not be defined
*/
function create_node__set_random_id(node_spec) {
if (undefined == node_spec) {
node_spec = {};
}
var ret = create_node_from_spec(node_spec);
util.assert(undefined == ret.id); // id must not be defined in spec
__set_obj_id(ret, random_id());
return ret;
}
function create_link__set_random_id(src, dst, link_spec) {
var ret = create_link_from_spec(src, dst, link_spec);
__set_obj_id(ret, random_id());
return ret;
}
/**
* determine if nodes are equal by name
*
* @param other_node
* @returns {Boolean}
*/
Node.prototype.equal_by_name = function(other) {
ret = this.name.toLowerCase() == other.name.toLowerCase();
if (false == ret) {
console.debug(this.id + ' != ' + other.id);
}
return ret;
}
function create_link_from_spec(src, dst, link_spec) {
var ret = new Link();
if (undefined !== link_spec.id) {
// reuse id if present
__set_obj_id(ret, link_spec.id);
}
util.assert(undefined != src, 'create_link_from_spec: src missing');
util.assert(undefined != dst, 'create_link_from_spec: dst missing');
util.assert(undefined != src.id, 'create_link_from_spec: src missing id');
util.assert(undefined != dst.id, 'create_link_from_spec: dst missing id');
util.assert(undefined != link_spec.name, 'create_link_from_spec: name missing, unable to deduce type');
ret.__src = src;
ret.__dst = dst;
ret.__type = link_spec.name;
if (undefined == link_spec.name){
console.warn('create_link_from_spec: name: ' + link_spec.name);
link_spec.name = "";
}
ret.name = link_spec.name.trim();
ret.state = link_spec.state;
return ret;
}
/**
* determine if links are equal by ID
*
* @param other_node
* @returns {Boolean}
*/
Link.prototype.equal_by_id = function(other) {
return this.id.toLowerCase() == other.id.toLowerCase();
}
return {
init : init,
Node: Node, // allow model adaptation
Link: Link, // allow model adaptation
random_node_name : random_node_name,
create_node_from_spec : create_node_from_spec,
create_node__set_random_id : create_node__set_random_id,
create_link_from_spec : create_link_from_spec,
create_link__set_random_id : create_link__set_random_id,
};
});
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