// Generated by CoffeeScript 1.10.0
(function() {
  var Graph,
    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
    hasProp = {}.hasOwnProperty;

  global(Graph = (function(superClass) {
    extend(Graph, superClass);

    function Graph(conf) {
      Graph.__super__.constructor.call(this, {
        events: ['change']
      });
      this.nodes = {};
      this.links = {};
      this.next_node_id = 0;
      this.next_link_id = 0;
      this.selection = null;
    }

    Graph.prototype.get_nodes = function() {
      return Object.keys(this.nodes).map((function(_this) {
        return function(k) {
          return _this.nodes[k];
        };
      })(this));
    };

    Graph.prototype.get_links = function() {
      return Object.keys(this.links).map((function(_this) {
        return function(k) {
          return _this.links[k];
        };
      })(this));
    };

    Graph.prototype.new_node = function(x, y) {
      var n;
      n = {
        type: 'node',
        id: this.next_node_id,
        x: x,
        y: y,
        out_links: {},
        in_links: {}
      };
      this.nodes[n.id] = n;
      this.next_node_id += 1;
      this.trigger('change');
      return n;
    };

    Graph.prototype.new_link = function(source, target) {
      var l;
      l = {
        type: 'link',
        id: this.next_link_id,
        source: source,
        target: target,
        d: Math.sqrt(Math.pow(target.x - source.x, 2) + Math.pow(target.y - source.y, 2))
      };
      this.links[l.id] = l;
      this.next_link_id += 1;
      l.source.out_links[l.id] = l;
      l.target.in_links[l.id] = l;
      this.trigger('change');
      return l;
    };

    Graph.prototype.select = function(d) {
      if (this.selection != null) {
        delete this.selection.selected;
        this.selection = null;
      }
      d.selected = true;
      this.selection = d;
      this.trigger('change');
      return this;
    };

    Graph.prototype.delete_node_id = function(id, silent) {
      var d;
      d = this.nodes[id];
      this.delete_node(d);
      if (!silent) {
        return this.trigger('change');
      }
    };

    Graph.prototype.delete_node = function(d, silent) {
      Object.keys(d.out_links).forEach((function(_this) {
        return function(k) {
          return _this.delete_link_id(k, true);
        };
      })(this));
      Object.keys(d.in_links).forEach((function(_this) {
        return function(k) {
          return _this.delete_link_id(k, true);
        };
      })(this));
      delete this.nodes[d.id];
      if (!silent) {
        return this.trigger('change');
      }
    };

    Graph.prototype.delete_link_id = function(id, silent) {
      var l;
      l = this.links[id];
      this.delete_link(l);
      if (!silent) {
        return this.trigger('change');
      }
    };

    Graph.prototype.delete_link = function(l, silent) {
      delete this.links[l.id];
      delete l.source.out_links[l.id];
      delete l.target.in_links[l.id];
      if (!silent) {
        return this.trigger('change');
      }
    };

    Graph.prototype.delete_selected = function() {
      if (this.selection == null) {
        return false;
      }
      if (this.selection.type === 'node' && this.selection.id in this.nodes) {
        this.delete_node_id(this.selection.id, true);
      } else if (this.selection.type === 'link' && this.selection.id in this.links) {
        this.delete_link_id(this.selection.id, true);
      }
      this.trigger('change');
      return true;
    };

    return Graph;

  })(EventSource));

}).call(this);