/*! d3.chart - v0.2.1
 *  License: MIT Expat
 *  Date: 2014-06-24
 */
(function(t){"use strict";function e(t){var e,r,n,i;if(!t)return t;for(r=arguments.length,e=1;r>e;e++)if(n=arguments[e])for(i in n)t[i]=n[i];return t}var r=t.d3,n=Object.hasOwnProperty,i=function(t,e){if(!t)throw Error("[d3.chart] "+e)};i(r,"d3.js is required"),i("string"==typeof r.version&&r.version.match(/^3/),"d3.js version 3 is required");var a=/^(enter|update|merge|exit)(:transition)?$/,s=function(t){i(t,"Layers must be initialized with a base."),this._base=t,this._handlers={}};s.prototype.dataBind=function(){i(!1,"Layers must specify a `dataBind` method.")},s.prototype.insert=function(){i(!1,"Layers must specify an `insert` method.")},s.prototype.on=function(t,e,r){return r=r||{},i(a.test(t),"Unrecognized lifecycle event name specified to `Layer#on`: '"+t+"'."),t in this._handlers||(this._handlers[t]=[]),this._handlers[t].push({callback:e,chart:r.chart||null}),this._base},s.prototype.off=function(t,e){var r,n=this._handlers[t];if(i(a.test(t),"Unrecognized lifecycle event name specified to `Layer#off`: '"+t+"'."),!n)return this._base;if(1===arguments.length)return n.length=0,this._base;for(r=n.length-1;r>-1;--r)n[r].callback===e&&n.splice(r,1);return this._base},s.prototype.draw=function(t){var e,n,a,s,o,h,c,l;e=this.dataBind.call(this._base,t),i(e&&e.call===r.selection.prototype.call,"Invalid selection defined by `Layer#dataBind` method."),i(e.enter,"Layer selection not properly bound."),n=e.enter(),n._chart=this._base._chart,a=[{name:"update",selection:e},{name:"enter",selection:this.insert.bind(n)},{name:"merge",selection:e},{name:"exit",selection:e.exit.bind(e)}];for(var u=0,p=a.length;p>u;++u)if(h=a[u].name,s=a[u].selection,"function"==typeof s&&(s=s()),!s.empty()){if(i(s&&s.call===r.selection.prototype.call,"Invalid selection defined for '"+h+"' lifecycle event."),o=this._handlers[h])for(c=0,l=o.length;l>c;++c)s._chart=o[c].chart||this._base._chart,s.call(o[c].callback);if(o=this._handlers[h+":transition"],o&&o.length)for(s=s.transition(),c=0,l=o.length;l>c;++c)s._chart=o[c].chart||this._base._chart,s.call(o[c].callback)}},r.selection.prototype.layer=function(t){var e,r=new s(this);if(r.dataBind=t.dataBind,r.insert=t.insert,"events"in t)for(e in t.events)r.on(e,t.events[e]);return this.on=function(){return r.on.apply(r,arguments)},this.off=function(){return r.off.apply(r,arguments)},this.draw=function(){return r.draw.apply(r,arguments)},this};var o=function(t,e){var r=this.constructor,i=r.__super__;i&&o.call(i,t,e),n.call(r.prototype,"initialize")&&this.initialize.apply(t,e)},h=function(t,e){var r=this.constructor,i=r.__super__;return this===t&&n.call(this,"transform")&&(e=this.transform(e)),n.call(r.prototype,"transform")&&(e=r.prototype.transform.call(t,e)),i&&(e=h.call(i,t,e)),e},c=function(t,e){this.base=t,this._layers={},this._attached={},this._events={},e&&e.transform&&(this.transform=e.transform),o.call(this,this,[e])};c.prototype.initialize=function(){},c.prototype.unlayer=function(t){var e=this.layer(t);return delete this._layers[t],delete e._chart,e},c.prototype.layer=function(t,e,r){var n;if(1===arguments.length)return this._layers[t];if(2===arguments.length){if("function"==typeof e.draw)return e._chart=this,this._layers[t]=e,this._layers[t];i(!1,"When reattaching a layer, the second argument must be a d3.chart layer")}return n=e.layer(r),this._layers[t]=n,e._chart=this,n},c.prototype.attach=function(t,e){return 1===arguments.length?this._attached[t]:(this._attached[t]=e,e)},c.prototype.draw=function(t){var e,r,n;t=h.call(this,this,t);for(e in this._layers)this._layers[e].draw(t);for(r in this._attached)n=this.demux?this.demux(r,t):t,this._attached[r].draw(n)},c.prototype.on=function(t,e,r){var n=this._events[t]||(this._events[t]=[]);return n.push({callback:e,context:r||this,_chart:this}),this},c.prototype.once=function(t,e,r){var n=this,i=function(){n.off(t,i),e.apply(this,arguments)};return this.on(t,i,r)},c.prototype.off=function(t,e,r){var n,i,a,s,o,h;if(0===arguments.length){for(t in this._events)this._events[t].length=0;return this}if(1===arguments.length)return a=this._events[t],a&&(a.length=0),this;for(n=t?[t]:Object.keys(this._events),o=0;n.length>o;o++)for(i=n[o],a=this._events[i],h=a.length;h--;)s=a[h],(e&&e===s.callback||r&&r===s.context)&&a.splice(h,1);return this},c.prototype.trigger=function(t){var e,r,n=Array.prototype.slice.call(arguments,1),i=this._events[t];if(void 0!==i)for(e=0;i.length>e;e++)r=i[e],r.callback.apply(r.context,n);return this},c.extend=function(t,r,i){var a,s=this;a=r&&n.call(r,"constructor")?r.constructor:function(){return s.apply(this,arguments)},e(a,s,i);var o=function(){this.constructor=a};return o.prototype=s.prototype,a.prototype=new o,r&&e(a.prototype,r),a.__super__=s.prototype,c[t]=a,a},r.chart=function(t){return 0===arguments.length?c:1===arguments.length?c[t]:c.extend.apply(c,arguments)},r.selection.prototype.chart=function(t,e){if(0===arguments.length)return this._chart;var r=c[t];return i(r,"No chart registered with name '"+t+"'"),new r(this,e)},r.selection.enter.prototype.chart=function(){return this._chart},r.transition.prototype.chart=r.selection.enter.prototype.chart})(this);
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