/**
 * Autocompleter
 *
 * http://digitarald.de/project/autocompleter/
 *
 * @version		1.1.2
 *
 * @license		MIT-style license
 * @author		Harald Kirschner <mail [at] digitarald.de>
 * @copyright	Author
 */

var Autocompleter = new Class({

	Implements: [Options, Events],

	options: {/*
		onOver: $empty,
		onSelect: $empty,
		onSelection: $empty,
		onShow: $empty,
		onHide: $empty,
		onBlur: $empty,
		onFocus: $empty,*/
		minLength: 1,
		markQuery: true,
		width: 'inherit',
		maxChoices: 10,
		injectChoice: null,
		customChoices: null,
		emptyChoices: null,
		visibleChoices: true,
		className: 'autocompleter-choices',
		zIndex: 100,
		delay: 400,
		observerOptions: {},
		fxOptions: {},

		autoSubmit: false,
		overflow: false,
		overflowMargin: 25,
		selectFirst: false,
		filter: null,
		filterCase: false,
		filterSubset: false,
		forceSelect: false,
		selectMode: true,
		choicesMatch: null,

		multiple: false,
		separator: ', ',
		separatorSplit: /\s*[,;]\s*/,
		autoTrim: false,
		allowDupes: false,

		cache: true,
		relative: false,
		
		//radmilo: add lang parameter
		lang: 'en'
	},

	initialize: function(element, options) {
		this.element = $(element);		
		this.setOptions(options);
		this.build();
		
		//radmilo: call submitToCFV when form is submitted
		$('jtf-go').addEvent('click', this.submitToCFV.bind(this));
				
		this.observer = new Observer(this.element, this.prefetch.bind(this), $merge({
			'delay': this.options.delay
		}, this.options.observerOptions));
		this.queryValue = null;
		if (this.options.filter) this.filter = this.options.filter.bind(this);
		var mode = this.options.selectMode;
		this.typeAhead = (mode == 'type-ahead');
		this.selectMode = (mode === true) ? 'selection' : mode;
		this.cached = [];
	},

	/**
	 * build - Initialize DOM
	 *
	 * Builds the html structure for choices and appends the events to the element.
	 * Override this function to modify the html generation.
	 */
	build: function() {
		if ($(this.options.customChoices)) {
			this.choices = this.options.customChoices;
		} else {			
			this.choices = new Element('ul', {
				'class': this.options.className,
				'styles': {
					'zIndex': this.options.zIndex
				}
			}).inject(document.body);
			this.relative = false;
			if (this.options.relative) {
				this.choices.inject(this.element, 'after');
				this.relative = this.element.getOffsetParent();
			}
			this.fix = new OverlayFix(this.choices);			
		}
		if (!this.options.separator.test(this.options.separatorSplit)) {
			this.options.separatorSplit = this.options.separator;
		}
		this.fx = (!this.options.fxOptions) ? null : new Fx.Tween(this.choices, $merge({
			'property': 'opacity',
			'link': 'cancel',
			'duration': 200
		}, this.options.fxOptions)).addEvent('onStart', Chain.prototype.clearChain).set(0);
		this.element.setProperty('autocomplete', 'off')
			.addEvent((Browser.Engine.trident || Browser.Engine.webkit) ? 'keydown' : 'keypress', this.onCommand.bind(this))
			.addEvent('click', this.onCommand.bind(this, [false]))
			.addEvent('focus', this.toggleFocus.create({bind: this, arguments: true, delay: 100}))
			//.addEvent('blur', this.toggleFocus.create({bind: this, arguments: false, delay: 100}));
			//radmilo: add the below line to replace one above as per instructions from the user forum (to fix scrolling issue in IE)
			.addEvent('click', function (e) {if (e.target != this.choices) this.toggleFocus(false)}.bind(this));
		
		//radmilo: build a span tag to hold the dropUpImg
		this.dropUpImgContainer = new Element('span', {
			'styles': {'display': 'none'}
		}).inject(document.body);
		//radmilo: define and insert the triangle image into the span container
		new Element('img', {
			'src': '/t2scr/static/app/ps_fundfinder/public/en/image/arrowJumpToFund.gif',
			'width': '23',
			'height': '12'
		}).inject(this.dropUpImgContainer);
		
		//radmilo: build a span tag to hold the close button
		this.closeButtonContainer = new Element('span', {
			'styles': {'display': 'none'}
		}).inject(document.body);
		//radmilo: define and insert the close button image into the span container
		new Element('img', {
			'src': '/t2scr/static/app/ps_fundfinder/public/en/image/closeFundFinder.gif',
			'width': '13',
			'height': '16',
			'border': '0',
			'styles': {'cursor': 'pointer'}
		}).inject(this.closeButtonContainer);
		this.closeButtonContainer.addEvent('click', function () {this.toggleFocus(false)}.bind(this));
		
		//radmilo: build a span tag to hold total results
		this.totalResultsContainer = new Element('span', {
			'styles': 	{'display': 'none'}
		}).inject(document.body);
	},

	destroy: function() {
		if (this.fix) this.fix.destroy();
		this.choices = this.selected = this.choices.destroy();
	},

	toggleFocus: function(state) {
		this.focussed = state;
		if (!state) this.hideChoices(true);
		this.fireEvent((state) ? 'onFocus' : 'onBlur', [this.element]);
	},

	onCommand: function(e) {
		if (!e && this.focussed) return this.prefetch();
		if (e && e.key && !e.shift) {
			switch (e.key) {
				case 'enter':
					//radmilo: commented out line below as it would prevent from proceeding when enter key is hit; line compares if the selected and input box value are the same
					//if (this.element.value != this.opted) return true;
					if (this.selected && this.visible) {
						this.choiceSelect(this.selected);
						return !!(this.options.autoSubmit);
					}
					break;
				case 'up': case 'down':
					if (!this.prefetch() && this.queryValue !== null) {
						var up = (e.key == 'up');
						this.choiceOver((this.selected || this.choices)[
							(this.selected) ? ((up) ? 'getPrevious' : 'getNext') : ((up) ? 'getLast' : 'getFirst')
						](this.options.choicesMatch), true);
					}
					return false;
				case 'esc': case 'tab':
					this.hideChoices(true);
					break;
			}
		}
		return true;
	},

	setSelection: function(finish) {
		var input = this.selected.inputValue, value = input;
		var start = this.queryValue.length, end = input.length;
		if (input.substr(0, start).toLowerCase() != this.queryValue.toLowerCase()) start = 0;
		if (this.options.multiple) {
			var split = this.options.separatorSplit;
			value = this.element.value;
			start += this.queryIndex;
			end += this.queryIndex;
			var old = value.substr(this.queryIndex).split(split, 1)[0];
			value = value.substr(0, this.queryIndex) + input + value.substr(this.queryIndex + old.length);
			if (finish) {
				var tokens = value.split(this.options.separatorSplit).filter(function(entry) {
					return this.test(entry);
				}, /[^\s,]+/);
				if (!this.options.allowDupes) tokens = [].combine(tokens);
				var sep = this.options.separator;
				value = tokens.join(sep) + sep;
				end = value.length;
			}
		}
		this.observer.setValue(value);
		this.opted = value;
		if (finish || this.selectMode == 'pick') start = end;
		this.element.selectRange(start, end);
		this.fireEvent('onSelection', [this.element, this.selected, value, input]);
	},

	showChoices: function() {		
		var match = this.options.choicesMatch, first = this.choices.getFirst(match);
		this.selected = this.selectedValue = null;
		if (this.fix) {
			var pos = this.element.getCoordinates(this.relative), width = this.options.width || 'auto';
			
			//radmilo: calculate left position based on browser
			//radmilo: subtract from left position value to align the drop up list right			
			var leftPos = pos.left - 109;
			if (Browser.firefox) {
				if (Browser.firefox3) {
					leftPos = pos.left - 108;					
				} else {
					leftPos = pos.left - 106;
				}
			}
			
			this.choices.setStyles({
				'border': '7px solid #45453a',
				//radmilo: subtract from left position value to align the drop up list right
				'left': leftPos,
				//radmilo: set top to 0 instead of pos.bottom in order to remove empty space below the input box
				//radmilo: changed setting top from 0 to 150 so with 1024 resolution, the window wouldn't scroll up on search
				//'top': pos.bottom,
				'top': 150,
				'width': (width === true || width == 'inherit') ? pos.width : width
			});
		}
		if (!first) return;
		if (!this.visible) {
			this.visible = true;
			this.choices.setStyle('display', '');
			if (this.fx) this.fx.start(1);
			this.fireEvent('onShow', [this.element, this.choices]);
		}
		if (this.options.selectFirst || this.typeAhead || first.inputValue == this.queryValue) this.choiceOver(first, this.typeAhead);
		var items = this.choices.getChildren(match), max = this.options.maxChoices;
		var styles = {'overflowY': 'hidden', 'height': ''};
		this.overflown = false;
		if (items.length > max) {
			var item = items[max - 1];
			styles.overflowY = 'scroll';			
			styles.height = item.getCoordinates(this.choices).bottom;			
			this.overflown = true;
		};
		this.choices.setStyles(styles);
		this.fix.show();
		if (this.options.visibleChoices) {
			var scroll = document.getScroll(),
			size = document.getSize(),
			coords = this.choices.getCoordinates();
			if (coords.right > scroll.x + size.x) scroll.x = coords.right - size.x;
			if (coords.bottom > scroll.y + size.y) scroll.y = coords.bottom - size.y;
			window.scrollTo(Math.min(scroll.x, coords.left), Math.min(scroll.y, coords.top));
		}
		
		//radmilo: subtract height of the drop up + height of the input box to position the drop up list above the input box
		this.choices.setStyles({'top': pos.bottom - (coords.height + 40)});
		
		//radmilo: show the dropUpImg
		this.dropUpImgContainer.setStyles({
			'position': 'absolute',
			'display': 'inline',
			'top': pos.bottom - 40,
			'left': pos.right - 40,
			'zIndex': 100
		});
		
		//radmilo: show the closeButton
		this.closeButtonContainer.setStyles({
		   	'-moz-box-sizing':		'border-box',
		   	'-webkit-box-sizing': 	'border-box',
		    'box-sizing':        	'border-box',			
			'background-color': '#45453a',		
			'position': 'absolute',
			'display': 'inline',
			'padding-left': '326',
			'padding-top': '5',			
			'width': '350',
			'height': '25',
			'top': pos.bottom - (coords.height + 65),
			'left': pos.right - 323,
			'zIndex': 100
		});
		
		//radmilo: add if statement to by pass up coming logic in 'no results found' search scenario
		if (this.choices.childNodes[0].innerHTML != 'No Results Found' && this.choices.childNodes[0].innerHTML != 'Aucun résultat trouvé') {
			//radmilo: insert and show the total results
			var strTotResults = 'Total Results: ';
			if (this.options.lang == 'fr') strTotResults = 'Total des résultats: ';
			this.totalResultsContainer.innerHTML = strTotResults + this.choices.childNodes.length;
			this.totalResultsContainer.setStyles({
			   	'-moz-box-sizing':		'border-box',
			   	'-webkit-box-sizing': 	'border-box',
			    'box-sizing':        	'border-box',
				'font-family':			'Arial',
				'color':				'#fff',
				'font-size':			'12px',
				'font-weight':			'bold',
				'background-color': '#45453a',		
				'position': 'absolute',
				'display': 'inline',
				'padding-left': '10',
				'padding-top': '5',			
				'width': '200',
				'height': '25',
				'top': pos.bottom - (coords.height + 65),
				'left': pos.right - 323,
				'zIndex': 101
			});
		}
	},

	hideChoices: function(clear) {
		if (clear) {
			var value = this.element.value;
			if (this.options.forceSelect) value = this.opted;
			if (this.options.autoTrim) {
				value = value.split(this.options.separatorSplit).filter($arguments(0)).join(this.options.separator);
			}
			this.observer.setValue(value);
		}
		if (!this.visible) return;
		this.visible = false;
		if (this.selected) {
			this.selected.removeClass('autocompleter-selected');
			//radmilo: remove underline from fundname if not selected
			$(this.selected.childNodes[0]).removeClass('autocompleter-selected-fundname');
		}
		this.observer.clear();
		var hide = function(){
			this.choices.setStyle('display', 'none');
			this.fix.hide();
		}.bind(this);
		if (this.fx) this.fx.start(0).chain(hide);
		else hide();
		this.fireEvent('onHide', [this.element, this.choices]);
		
		//radmilo: hide the dropUpImg
		this.dropUpImgContainer.setStyles({
			'display': 'none'
		});		
		
		//radmilo: hide the closeButton
		this.closeButtonContainer.setStyles({
			'display': 'none'
		});			
		
		//radmilo: hide the closeButton
		this.totalResultsContainer.setStyles({
			'display': 'none'
		});
	},

	prefetch: function() {
		var value = this.element.value, query = value;
		if (this.options.multiple) {
			var split = this.options.separatorSplit;
			var values = value.split(split);
			var index = this.element.getSelectedRange().start;
			var toIndex = value.substr(0, index).split(split);
			var last = toIndex.length - 1;
			index -= toIndex[last].length;
			query = values[last];
		}
		if (query.length < this.options.minLength) {
			this.hideChoices();
		} else {
			if (query === this.queryValue || (this.visible && query == this.selectedValue)) {
				if (this.visible) return false;
				this.showChoices();
			} else {
				this.queryValue = query;
				this.queryIndex = index;
				if (!this.fetchCached()) this.query();
			}
		}
		return true;
	},

	fetchCached: function() {
		return false;
		if (!this.options.cache
			|| !this.cached
			|| !this.cached.length
			|| this.cached.length >= this.options.maxChoices
			|| this.queryValue) return false;
		this.update(this.filter(this.cached));
		return true;
	},

	update: function(tokens) {
		this.choices.empty();
		this.cached = tokens;
		var type = tokens && $type(tokens);
		if (!type || (type == 'array' && !tokens.length) || (type == 'hash' && !tokens.getLength())) {
			(this.options.emptyChoices || this.hideChoices).call(this);
			//radmilo: show 'no results found' message if applicable
			var msg = 'No Results Found';
			if (this.options.lang == 'fr') msg = 'Aucun résultat trouvé';
			var choice = new Element('li', {'html': msg});
			this.addChoiceEvents(choice).inject(this.choices);
			this.showChoices();
		} else {
			if (this.options.maxChoices < tokens.length && !this.options.overflow) tokens.length = this.options.maxChoices;
			tokens.each(this.options.injectChoice || function(token){
				var choice = new Element('li', {'html': this.markQueryValue(token)});
				choice.inputValue = token;				
				this.addChoiceEvents(choice).inject(this.choices);
			}, this);
			this.showChoices();
		}
	},

	choiceOver: function(choice, selection) {
		//radmilo: add if statement to by pass up coming logic in 'no results found' search scenario
		if (choice.childNodes[0].nodeValue != 'No Results Found' && choice.childNodes[0].nodeValue != 'Aucun résultat trouvé') {
			if (!choice || choice == this.selected) return;
			if (this.selected) {
				this.selected.removeClass('autocompleter-selected');
				//radmilo: remove underline from fundname if not selected
				$(this.selected.childNodes[0]).removeClass('autocompleter-selected-fundname');
			}
			this.selected = choice.addClass('autocompleter-selected');
			//radmilo: add underline to fundname if selected				
			$(this.selected.childNodes[0]).addClass('autocompleter-selected-fundname');		
			
			this.fireEvent('onSelect', [this.element, this.selected, selection]);
			if (!this.selectMode) this.opted = this.element.value;
			if (!selection) return;				
			this.selectedValue = this.selected.inputValue;		
			if (this.overflown) {
				var coords = this.selected.getCoordinates(this.choices), margin = this.options.overflowMargin,
					top = this.choices.scrollTop, height = this.choices.offsetHeight, bottom = top + height;
				if (coords.top - margin < top && top) this.choices.scrollTop = Math.max(coords.top - margin, 0);
				else if (coords.bottom + margin > bottom) this.choices.scrollTop = Math.min(coords.bottom - height + margin, bottom);
			}
			if (this.selectMode) this.setSelection();				
		} else {
			//radmilo: if search returned 'no results found', set the cursor to auto instead of a pointer as defined in CSS
			$(choice).setStyles({'cursor': 'auto'});			
		}
	},

	choiceSelect: function(choice) {		
		//radmilo: add if statement to by pass up coming logic in 'no results found' search scenario
		if (choice.childNodes[0].nodeValue != 'No Results Found' && choice.childNodes[0].nodeValue != 'Aucun résultat trouvé') {
			if (choice) this.choiceOver(choice);
			this.setSelection(true);
			this.queryValue = false;
			this.hideChoices();		
			//radmilo: call the CFV, PDF or GlobeFund page with home=jump_to_a_fund parameter for webtrends
			var url = choice.lastChild.innerHTML;
			url = url.replace(".jsp", ".jsp?home=jump_to_a_fund");
			url = url.replace(".pdf", ".pdf?home=jump_to_a_fund");
			url = url.replace("globefund?", "globefund?home=jump_to_a_fund&");
			window.location.href = url;
		}
	},
	
	//radmilo: if go button is clicked, go to either the first item or the selected item in the list. if list is not shown, ignore the click
	submitToCFV: function() {		
		if (this.selected) {
			//radmilo: if list is shown and item is selected			
			//radmilo: call the CFV, PDF or GlobeFund page with home=jump_to_a_fund parameter for webtrends
			var url = this.selected.lastChild.innerHTML;			
			url = url.replace(".jsp", ".jsp?home=jump_to_a_fund");
			url = url.replace(".pdf", ".pdf?home=jump_to_a_fund");
			url = url.replace("globefund?", "globefund?home=jump_to_a_fund&");						
			window.location.href = url;
		} else {			
			if (this.selected === null) {
				//radmilo: if list is shown and item is 'no results found'
				if (this.choices.childNodes[0].innerHTML != 'No Results Found' && this.choices.childNodes[0].innerHTML != 'Aucun résultat trouvé') {
					//radmilo: if list is shown and item is not selected				
					//radmilo: call the CFV, PDF or GlobeFund page with home=jump_to_a_fund parameter for webtrends
					var url = this.choices.childNodes[0].lastChild.innerHTML;
					url = url.replace(".jsp", ".jsp?home=jump_to_a_fund");
					url = url.replace(".pdf", ".pdf?home=jump_to_a_fund");
					url = url.replace("globefund?", "globefund?home=jump_to_a_fund&");						
					window.location.href = url;				
				}
			}
		}
		return false;	
	},

	filter: function(tokens) {
		return (tokens || this.tokens).filter(function(token) {
			//radmilo: remove the div tag containing the url from the search/show results
			token = token.substring(0,token.indexOf("<"));
			return this.test(token);
		}, new RegExp(((this.options.filterSubset) ? '' : '^') + this.queryValue.escapeRegExp(), (this.options.filterCase) ? '' : 'i'));
	},

	/**
	 * markQueryValue
	 *
	 * Marks the queried word in the given string with <span class="autocompleter-queried">*</span>
	 * Call this i.e. from your custom parseChoices, same for addChoiceEvents
	 *
	 * @param		{String} Text
	 * @return		{String} Text
	 */
	markQueryValue: function(str) {		
		var newStr = (!this.options.markQuery || !this.queryValue) ? str : str.replace(new RegExp('(' + ((this.options.filterSubset) ? '' : '^') + this.queryValue.escapeRegExp() + ')', (this.options.filterCase) ? '' : 'i'), '<span class="autocompleter-queried">$1</span>');
		
		//radmilo: replace every ! char in the input string with an HTML <br> tag
		newStr = newStr.replace(/!/g,"<br>");
		
		//radmilo: wrap fund name with a span in order to underline it on select
		newStrTemp = "<span>".concat(newStr);
		newStr = newStrTemp.replace("<br>", "</span><br>");
		
		return newStr;
	},

	/**
	 * addChoiceEvents
	 *
	 * Appends the needed event handlers for a choice-entry to the given element.
	 *
	 * @param		{Element} Choice entry
	 * @return		{Element} Choice entry
	 */
	addChoiceEvents: function(el) {
		return el.addEvents({
			'mouseover': this.choiceOver.bind(this, [el]),
			'click': this.choiceSelect.bind(this, [el])
		});
	}
});

var OverlayFix = new Class({

	initialize: function(el) {
		if (Browser.Engine.trident) {
			this.element = $(el);
			this.relative = this.element.getOffsetParent();
			this.fix = new Element('iframe', {
				'frameborder': '0',
				'scrolling': 'no',
				'src': 'javascript:false;',
				'styles': {
					'position': 'absolute',
					'border': 'none',
					'display': 'none',
					'filter': 'progid:DXImageTransform.Microsoft.Alpha(opacity=0)'
				}
			}).inject(this.element, 'after');
		}
	},

	show: function() {
		if (this.fix) {
			var coords = this.element.getCoordinates(this.relative);
			delete coords.right;
			delete coords.bottom;
			this.fix.setStyles($extend(coords, {
				'display': '',
				'zIndex': (this.element.getStyle('zIndex') || 1) - 1
			}));
		}
		return this;
	},

	hide: function() {
		if (this.fix) this.fix.setStyle('display', 'none');
		return this;
	},

	destroy: function() {
		if (this.fix) this.fix = this.fix.destroy();
	}

});

Element.implement({

	getSelectedRange: function() {
		if (!Browser.Engine.trident) return {start: this.selectionStart, end: this.selectionEnd};
		var pos = {start: 0, end: 0};
		var range = this.getDocument().selection.createRange();
		if (!range || range.parentElement() != this) return pos;
		var dup = range.duplicate();
		if (this.type == 'text') {
			pos.start = 0 - dup.moveStart('character', -100000);
			pos.end = pos.start + range.text.length;
		} else {
			var value = this.value;
			var offset = value.length - value.match(/[\n\r]*$/)[0].length;
			dup.moveToElementText(this);
			dup.setEndPoint('StartToEnd', range);
			pos.end = offset - dup.text.length;
			dup.setEndPoint('StartToStart', range);
			pos.start = offset - dup.text.length;
		}
		return pos;
	},

	selectRange: function(start, end) {
		if (Browser.Engine.trident) {
			var diff = this.value.substr(start, end - start).replace(/\r/g, '').length;
			start = this.value.substr(0, start).replace(/\r/g, '').length;
			var range = this.createTextRange();
			range.collapse(true);
			range.moveEnd('character', start + diff);
			range.moveStart('character', start);
			range.select();
		} else {
			this.focus();
			this.setSelectionRange(start, end);
		}
		return this;
	}

});

/* compatibility */

Autocompleter.Base = Autocompleter;