MD.Input = MD.Input || {};

MD.Input.Base = new Class({
	Implements: [Options, Events]

	,options: {
		returnHTML: false
		,validators: [
			//{
			//	name: 'MyValidator'
			//	,validation: Required
			//	,options: {}
			//}
		]
		,filters: [
			//{
			//	name: 'MyFilter'
			//	,filter: MD.Filter.Trim
			//}
		]
		,activatedItemClassName: 'Selected'
		,disabledItemClassName: 'Disabled'
		,disabled: false
		//onData:dirty function()
		//onData:dirty:after function(this)
		//onReady(this)
	}

	,initialize: function(options) {
		this.setOptions(options);

		// define this
		this.html = '';

		this._setup();
		this._setupEventHandlers();

		// setup validators
		if (this.options.validators.length) {
			this.addValidators(this.options.validators);
		}

		if (this.options.filters.length) {
			this.addFilters(this.options.filters);
		}

		this._resetValidationValues();

		if (this.options.disabled) {
			this.disable();
		}

		if (this.options.returnHTML) {
			return this.html;
		}

		this._defaultReady(); // we use this because almost all inputs are ready right away, so we default to fire this event
	}

	,isReady: function() {
		return true;
	}

	,_defaultReady: function() {
		this.fireEvent('ready', this);
	}

	,destroy: function() {

	}

	,_setup: function() {
		this._validators = {};
		this._needsValidation = true;
		this._validationErrors = {};
		this._needsFilter = true;
		this._filteredValue = "";

		this._filters = {};
	}

	,_resetValidationValues: function() {
		this._needsValidation = true;
		this._needsFilter = true;
		this._validationErrors = {};
	}

	,_setupEventHandlers: function() {
		this.addEvent('data:dirty', function() {
			this._resetValidationValues();
			this.fireEvent('data:dirty:after', this);
		}.bind(this));
	}

	,activate: function() {
		throw new Error('did not implement activate');
	}

	,deactivate: function() {
		throw new Error('did not implement deactivate');
	}

	,enable: function() {
		throw new Error('did not implement enable');
	}

	,disable: function() {
		throw new Error('did not implement disable');
	}

	,show: function(displayString) {
		this.toElement().show(displayString);
		return this;
	}

	,hide: function() {
		this.toElement().hide();
		return this;
	}


	,toElement: function() {
		return this.html;
	}

/*
  .d8888b.           888                   .d8888b.            .d8888b.           888
 d88P  Y88b          888                  d88P  "88b          d88P  Y88b          888
 888    888          888                  Y88b. d88P          Y88b.               888
 888         .d88b.  888888 .d8888b        "Y8888P"            "Y888b.    .d88b.  888888 .d8888b
 888  88888 d8P  Y8b 888    88K           .d88P88K.d88P           "Y88b. d8P  Y8b 888    88K
 888    888 88888888 888    "Y8888b.      888"  Y888P"              "888 88888888 888    "Y8888b.
 Y88b  d88P Y8b.     Y88b.       X88      Y88b .d8888b        Y88b  d88P Y8b.     Y88b.       X88
 "Y8888P88  "Y8888   "Y888  88888P'       "Y8888P" Y88b       "Y8888P"   "Y8888   "Y888  88888P'
*/
	,setPlaceholderText: function(value) {
		this._placeholderText = value;
		this.options.placeholderText = value;
	}

	,getValue: function(value) {
		if (this._needsFilter || value !== this._filteredValue) {

			Object.each(this._filters, function(filter) {
				value = filter.execute(value);
			});

			this.filteredValue = value;
			this._needsFilter = false;
		}

		return this.filteredValue;
	}

	,getValueAsText: function(value) {
		return this.getValue(value);
	}

	,setValue: function(value) {
		this.fireEvent('data:dirty', this);
		throw new Error("setValue not implemented "+value);
		//return this;
	}

	,_getBaseClassName: function() {
		return 'MDInput';
	}

/*
888     888         888 d8b      888          888    d8b
888     888         888 Y8P      888          888    Y8P
888     888         888          888          888
Y88b   d88P 8888b.  888 888  .d88888  8888b.  888888 888  .d88b.  88888b.
 Y88b d88P     "88b 888 888 d88" 888     "88b 888    888 d88""88b 888 "88b
  Y88o88P  .d888888 888 888 888  888 .d888888 888    888 888  888 888  888
   Y888P   888  888 888 888 Y88b 888 888  888 Y88b.  888 Y88..88P 888  888
    Y8P    "Y888888 888 888  "Y88888 "Y888888  "Y888 888  "Y88P"  888  888
*/
	,addValidators: function(validators) {
		if (validators && validators.length) {
			validators.each(function(validator) {
				this.addValidator(validator.name, validator.validation, validator.options);
			}, this);
		}

		return this;
	}

	,addValidator: function(name, validation, options) {
		this._validators[name] = MD.Validation.Factory(validation, options);
		this.fireEvent('data:dirty', this);
		return this;
	}

	,removeValidators: function(names) {
		if (names && names.length) {
			names.each(function(name) {
				this.removeValidator(name);
			}, this);
		}

		return this;
	}

	,removeValidator: function(name) {

		if (this._validators[name]) {
			delete this._validators[name];
		}

		this.fireEvent('data:dirty', this);
		return this;
	}

	,validate: function(name) {
		// allow single validation by name
		if (name) {
			if (this._validators[name]) {
				var isValid = this._validators[name].validate(this);

				if ( ! isValid) {
					var toReturn = {};
					toReturn[name] = this._validators[name].getMessage();
					return toReturn;
				}
			}

			return {};
		} else {
			if (this._needsValidation) {
				var errors = {};

				Object.each(this._validators, function(validator, key) {
					var isValid = validator.validate(this);

					if ( ! isValid) {
						errors[key] = validator.getMessage();
					}
				}, this);

				this._validationErrors = errors;
				this._needsValidation = false;
			}

			return this._validationErrors;
		}
	}

	,isValid: function() {
		return Object.getLength(this.validate()) === 0;
	}

	,getValidationErrors: function() {
		return this.validate();
	}

/*
8888888888 d8b 888 888                    d8b
888        Y8P 888 888                    Y8P
888            888 888
8888888    888 888 888888 .d88b.  888d888 888 88888b.   .d88b.
888        888 888 888   d8P  Y8b 888P"   888 888 "88b d88P"88b
888        888 888 888   88888888 888     888 888  888 888  888
888        888 888 Y88b. Y8b.     888     888 888  888 Y88b 888
888        888 888  "Y888 "Y8888  888     888 888  888  "Y88888
															888
														Y8b d88P
														"Y88P"
*/
	,addFilters: function(filters) {
		if (filters && filters.length) {
			filters.each(function(filter) {
				this.addFilter(filter.name, filter.filter, filter.options);
			}, this);
		}

		return this;
	}

	,addFilter: function(name, filter, options) {
		this._filters[name] = MD.Filter.Factory(filter, options);
		this.fireEvent('data:dirty', this);
		return this;
	}

	,removeFilters: function(names) {
		if (names && names.length) {
			names.each(function(name) {
				this.removeFilter(name);
			}, this);
		}

		return this;
	}

	,removeFilter: function(name) {

		if (this._filters[name]) {
			delete this._filters[name];
		}

		this.fireEvent('data:dirty', this);
		return this;
	}
});