Ext.ns('Nexts.form');

/**
 * @class Nexts.form.DateTimeField
 * @extends Ext.form.Field
 */
Nexts.form.DateTimeField = Ext.extend(Ext.form.Field, {
	/**
	 * @cfg {String/Object} defaultAutoCreate DomHelper element spec
	 * Let superclass to create hidden field instead of textbox. Hidden will be submittend to server
	 */
	 defaultAutoCreate:{tag:'input', type:'hidden'}
	/**
	 * @cfg {Number} timeWidth Width of time field in pixels (defaults to 100)
	 */
	,timeWidth:100
	/**
	 * @cfg {String} dtSeparator Date - Time separator. Used to split date and time (defaults to ' ' (space))
	 */
	,dtSeparator:' '
	/**
	 * @cfg {String} hiddenFormat Format of datetime used to store value in hidden field
	 * and submitted to server (defaults to 'Y-m-d H:i:s' that is mysql format)
	 */
	,hiddenFormat:'Y-m-d H:i:s'
	/**
	 * @cfg {Boolean} otherToNow Set other field to now() if not explicly filled in (defaults to true)
	 */
	,otherToNow:true
	/**
	 * @cfg {Boolean} emptyToNow Set field value to now on attempt to set empty value.
	 * If it is true then setValue() sets value of field to current date and time (defaults to false)
	 */
	/**
	 * @cfg {String} timePosition Where the time field should be rendered. 'right' is suitable for forms
	 * and 'below' is suitable if the field is used as the grid editor (defaults to 'right')
	 */
	,timePosition:'right' // valid values:'below', 'right'
	/**
	 * @cfg {String} dateFormat Format of DateField. Can be localized. (defaults to 'm/y/d')
	 */
	,dateFormat:'m/d/y'
	/**
	 * @cfg {String} timeFormat Format of TimeField. Can be localized. (defaults to 'g:i A')
	 */
	,timeFormat:'g:i A'
	/**
	 * @cfg {Object} dateConfig Config for DateField constructor.
	 */
	/**
	 * @cfg {Object} timeConfig Config for TimeField constructor.
	 */

	// {{{
	/**
	 * private
	 * creates DateField and TimeField and installs the necessary event handlers
	 */
	,initComponent:function() {
		// call parent initComponent
		Nexts.form.DateTimeField.superclass.initComponent.call(this);

		// create DateField
		var dateConfig = Ext.apply({}, {
			 id:this.id + '-date'
			,format:this.dateFormat || Ext.form.DateField.prototype.format
			,width:this.timeWidth
			,selectOnFocus:this.selectOnFocus
			,listeners:{
				  blur:{scope:this, fn:this.onBlur}
				 ,focus:{scope:this, fn:this.onFocus}
			}
		}, this.dateConfig);
		this.df = new Ext.form.DateField(dateConfig);
		this.df.ownerCt = this;
		delete(this.dateFormat);


		// create TimeField
		var timeConfig = Ext.apply({}, {
			 id:this.id + '-time'
			,format:this.timeFormat || Ext.form.TimeField.prototype.format
			,width:this.timeWidth
			,selectOnFocus:this.selectOnFocus
			,listeners:{
				  blur:{scope:this, fn:this.onBlur}
				 ,focus:{scope:this, fn:this.onFocus}
			}
		}, this.timeConfig);
		this.tf = new Ext.form.TimeField(timeConfig);
		this.tf.ownerCt = this;
		delete(this.timeFormat);

		// relay events
		this.relayEvents(this.df, ['focus', 'specialkey', 'invalid', 'valid']);
		this.relayEvents(this.tf, ['focus', 'specialkey', 'invalid', 'valid']);

	} // eo function initComponent
	// }}}
	// {{{
	/**
	 * private
	 * Renders underlying DateField and TimeField and provides a workaround for side error icon bug
	 */
	,onRender:function(ct, position) {
		// don't run more than once
		if(this.isRendered) {
			return;
		}

		// render underlying hidden field
		Nexts.form.DateTimeField.superclass.onRender.call(this, ct, position);

		// render DateField and TimeField
		// create bounding table
		var t;
		if('below' === this.timePosition || 'bellow' === this.timePosition) {
			t = Ext.DomHelper.append(ct, {tag:'table',style:'border-collapse:collapse',children:[
				 {tag:'tr',children:[{tag:'td', style:'padding-bottom:1px', cls:'ux-datetime-date'}]}
				,{tag:'tr',children:[{tag:'td', cls:'ux-datetime-time'}]}
			]}, true);
		}
		else {
			t = Ext.DomHelper.append(ct, {tag:'table',style:'border-collapse:collapse',children:[
				{tag:'tr',children:[
					{tag:'td',style:'padding-right:4px', cls:'ux-datetime-date'},{tag:'td', cls:'ux-datetime-time'}
				]}
			]}, true);
		}

		this.tableEl = t;
//        this.wrap = t.wrap({cls:'x-form-field-wrap'});
		this.wrap = t.wrap();
		this.wrap.on("mousedown", this.onMouseDown, this, {delay:10});

		// render DateField & TimeField
		this.df.render(t.child('td.ux-datetime-date'));
		this.tf.render(t.child('td.ux-datetime-time'));

		// workaround for IE trigger misalignment bug
		if(Ext.isIE && Ext.isStrict) {
			t.select('input').applyStyles({top:0});
		}

		this.on('specialkey', this.onSpecialKey, this);
		this.df.el.swallowEvent(['keydown', 'keypress']);
		this.tf.el.swallowEvent(['keydown', 'keypress']);

		// create icon for side invalid errorIcon
		if('side' === this.msgTarget) {
			var elp = this.el.findParent('.x-form-element', 10, true);
			this.errorIcon = elp.createChild({cls:'x-form-invalid-icon'});

			this.df.errorIcon = this.errorIcon;
			this.tf.errorIcon = this.errorIcon;
		}

		// setup name for submit
		this.el.dom.name = this.hiddenName || this.name || this.id;

		// prevent helper fields from being submitted
		this.df.el.dom.removeAttribute("name");
		this.tf.el.dom.removeAttribute("name");

		// we're rendered flag
		this.isRendered = true;

		// update hidden field
		this.updateHidden();

	} // eo function onRender
	// }}}
	// {{{
	/**
	 * private
	 */
	,adjustSize:Ext.BoxComponent.prototype.adjustSize
	// }}}
	// {{{
	/**
	 * private
	 */
	,alignErrorIcon:function() {
		this.errorIcon.alignTo(this.tableEl, 'tl-tr', [2, 0]);
	}
	// }}}
	// {{{
	/**
	 * private initializes internal dateValue
	 */
	,initDateValue:function() {
		this.dateValue = this.otherToNow ? new Date() : new Date(1970, 0, 1, 0, 0, 0);
	}
	// }}}
	// {{{
	/**
	 * Calls clearInvalid on the DateField and TimeField
	 */
	,clearInvalid:function(){
		this.df.clearInvalid();
		this.tf.clearInvalid();
	} // eo function clearInvalid
	// }}}

	/**
	 * @private
	 * called from Component::destroy. 
	 * Destroys all elements and removes all listeners we've created.
	 */
	,beforeDestroy:function() {
		if(this.isRendered) {
//            this.removeAllListeners();
			this.wrap.removeAllListeners();
			this.wrap.remove();
			this.tableEl.remove();
			this.df.destroy();
			this.tf.destroy();
		}
	} // eo function beforeDestroy

	// {{{
	/**
	 * Disable this component.
	 * @return {Ext.Component} this
	 */
	,disable:function() {
		if(this.isRendered) {
			this.df.disabled = this.disabled;
			this.df.onDisable();
			this.tf.onDisable();
		}
		this.disabled = true;
		this.df.disabled = true;
		this.tf.disabled = true;
		this.fireEvent("disable", this);
		return this;
	} // eo function disable
	// }}}
	// {{{
	/**
	 * Enable this component.
	 * @return {Ext.Component} this
	 */
	,enable:function() {
		if(this.rendered){
			this.df.onEnable();
			this.tf.onEnable();
		}
		this.disabled = false;
		this.df.disabled = false;
		this.tf.disabled = false;
		this.fireEvent("enable", this);
		return this;
	} // eo function enable
	// }}}
	// {{{
	/**
	 * private Focus date filed
	 */
	,focus:function() {
		this.df.focus();
	} // eo function focus
	// }}}
	// {{{
	/**
	 * private
	 */
	,getPositionEl:function() {
		return this.wrap;
	}
	// }}}
	// {{{
	/**
	 * private
	 */
	,getResizeEl:function() {
		return this.wrap;
	}
	// }}}
	// {{{
	/**
	 * @return {Date/String} Returns value of this field
	 */
	,getValue:function() {
		// create new instance of date
		return this.dateValue ? new Date(this.dateValue) : '';
	} // eo function getValue
	// }}}
	// {{{
	/**
	 * @return {Boolean} true = valid, false = invalid
	 * private Calls isValid methods of underlying DateField and TimeField and returns the result
	 */
	,isValid:function() {
		return this.df.isValid() && this.tf.isValid();
	} // eo function isValid
	// }}}
	// {{{
	/**
	 * Returns true if this component is visible
	 * @return {boolean} 
	 */
	,isVisible : function(){
		return this.df.rendered && this.df.getActionEl().isVisible();
	} // eo function isVisible
	// }}}
	// {{{
	/** 
	 * private Handles blur event
	 */
	,onBlur:function(f) {
		// called by both DateField and TimeField blur events

		// revert focus to previous field if clicked in between
		if(this.wrapClick) {
			f.focus();
			this.wrapClick = false;
		}

		// update underlying value
		if(f === this.df) {
			this.updateDate();
		}
		else {
			this.updateTime();
		}
		this.updateHidden();

		// fire events later
		(function() {
			if(!this.df.hasFocus && !this.tf.hasFocus) {
				var v = this.getValue();
				if(String(v) !== String(this.startValue)) {
					this.fireEvent("change", this, v, this.startValue);
				}
				this.hasFocus = false;
				this.fireEvent('blur', this);
			}
		}).defer(100, this);

	} // eo function onBlur
	// }}}
	// {{{
	/**
	 * private Handles focus event
	 */
	,onFocus:function() {
		if(!this.hasFocus){
			this.hasFocus = true;
			this.startValue = this.getValue();
			this.fireEvent("focus", this);
		}
	}
	// }}}
	// {{{
	/**
	 * private Just to prevent blur event when clicked in the middle of fields
	 */
	,onMouseDown:function(e) {
		if(!this.disabled) {
			this.wrapClick = 'td' === e.target.nodeName.toLowerCase();
		}
	}
	// }}}
	// {{{
	/**
	 * private
	 * Handles Tab and Shift-Tab events
	 */
	,onSpecialKey:function(t, e) {
		var key = e.getKey();
		if(key === e.TAB) {
			if(t === this.df && !e.shiftKey) {
				e.stopEvent();
				this.tf.focus();
			}
			if(t === this.tf && e.shiftKey) {
				e.stopEvent();
				this.df.focus();
			}
		}
		// otherwise it misbehaves in editor grid
		if(key === e.ENTER) {
			this.updateValue();
		}

	} // eo function onSpecialKey
	// }}}
	// {{{
	/**
	 * private Sets the value of DateField
	 */
	,setDate:function(date) {
		this.df.setValue(date);
	} // eo function setDate
	// }}}
	// {{{
	/** 
	 * private Sets the value of TimeField
	 */
	,setTime:function(date) {
		this.tf.setValue(date);
	} // eo function setTime
	// }}}
	// {{{
	/**
	 * private
	 * Sets correct sizes of underlying DateField and TimeField
	 * With workarounds for IE bugs
	 */
	,setSize:function(w, h) {
		if(!w) {
			return;
		}
		if('below' === this.timePosition) {
			this.df.setSize(w, h);
			this.tf.setSize(w, h);
			if(Ext.isIE) {
				this.df.el.up('td').setWidth(w);
				this.tf.el.up('td').setWidth(w);
			}
		}
		else {
			this.df.setSize(w - this.timeWidth - 4, h);
			this.tf.setSize(this.timeWidth, h);

			if(Ext.isIE) {
				this.df.el.up('td').setWidth(w - this.timeWidth - 4);
				this.tf.el.up('td').setWidth(this.timeWidth);
			}
		}
	} // eo function setSize
	// }}}
	// {{{
	/**
	 * @param {Mixed} val Value to set
	 * Sets the value of this field
	 */
	,setValue:function(val) {
		if(!val && true === this.emptyToNow) {
			this.setValue(new Date());
			return;
		}
		else if(!val) {
			this.setDate('');
			this.setTime('');
			this.updateValue();
			return;
		}
		if ('number' === typeof val) {
		  val = new Date(val);
		}
		val = val ? val : new Date(1970, 0 ,1, 0, 0, 0);
		var da, time;
		if(val instanceof Date) {
			this.setDate(val);
			this.setTime(val);
			this.dateValue = new Date(val);
		}
		else {
			da = val.split(this.dtSeparator);
			this.setDate(da[0]);
			if(da[1]) {
				if(da[2]) {
					// add am/pm part back to time
					da[1] += da[2];
				}
				this.setTime(da[1]);
			}
		}
		this.updateValue();
	} // eo function setValue
	// }}}
	// {{{
	/**
	 * Hide or show this component by boolean
	 * @return {Ext.Component} this
	 */
	,setVisible: function(visible){
		if(visible) {
			this.df.show();
			this.tf.show();
		}else{
			this.df.hide();
			this.tf.hide();
		}
		return this;
	} // eo function setVisible
	// }}}
	//{{{
	,show:function() {
		return this.setVisible(true);
	} // eo function show
	//}}}
	//{{{
	,hide:function() {
		return this.setVisible(false);
	} // eo function hide
	//}}}
	// {{{
	/**
	 * private Updates the date part
	 */
	,updateDate:function() {

		var d = this.df.getValue();
		if(d) {
			if(!(this.dateValue instanceof Date)) {
				this.initDateValue();
				if(!this.tf.getValue()) {
					this.setTime(this.dateValue);
				}
			}
			this.dateValue.setMonth(0); // because of leap years
			this.dateValue.setFullYear(d.getFullYear());
			this.dateValue.setMonth(d.getMonth());
			this.dateValue.setDate(d.getDate());
		}
		else {
			this.dateValue = '';
			this.setTime('');
		}
	} // eo function updateDate
	// }}}
	// {{{
	/**
	 * private
	 * Updates the time part
	 */
	,updateTime:function() {
		var t = this.tf.getValue();
		if(t && !(t instanceof Date)) {
			t = Date.parseDate(t, this.tf.format);
		}
		if(t && !this.df.getValue()) {
			this.initDateValue();
			this.setDate(this.dateValue);
		}
		if(this.dateValue instanceof Date) {
			if(t) {
				this.dateValue.setHours(t.getHours());
				this.dateValue.setMinutes(t.getMinutes());
				this.dateValue.setSeconds(t.getSeconds());
			}
			else {
				this.dateValue.setHours(0);
				this.dateValue.setMinutes(0);
				this.dateValue.setSeconds(0);
			}
		}
	} // eo function updateTime
	// }}}
	// {{{
	/**
	 * private Updates the underlying hidden field value
	 */
	,updateHidden:function() {
		if(this.isRendered) {
			var value = this.dateValue instanceof Date ? this.dateValue.format(this.hiddenFormat) : '';
			this.el.dom.value = value;
		}
	}
	// }}}
	// {{{
	/**
	 * private Updates all of Date, Time and Hidden
	 */
	,updateValue:function() {

		this.updateDate();
		this.updateTime();
		this.updateHidden();

		return;
	} // eo function updateValue
	// }}}
	// {{{
	/**
	 * @return {Boolean} true = valid, false = invalid
	 * callse validate methods of DateField and TimeField
	 */
	,validate:function() {
		return this.df.validate() && this.tf.validate();
	} // eo function validate
	// }}}
	// {{{
	/**
	 * Returns renderer suitable to render this field
	 * @param {Object} Column model config
	 */
	,renderer: function(field) {
		var format = field.editor.dateFormat || Nexts.form.DateTimeField.prototype.dateFormat;
		format += ' ' + (field.editor.timeFormat || Nexts.form.DateTimeField.prototype.timeFormat);
		var renderer = function(val) {
			var retval = Ext.util.Format.date(val, format);
			return retval;
		};
		return renderer;
	} // eo function renderer
	// }}}

}); // eo extend

// register xtype
Ext.reg('datetimefield', Nexts.form.DateTimeField);
