/**
 *
 *  Ajax Autocomplete for Prototype, version 1.0.3
 *  (c) 2008 Tomas Kirda
 *
 *  Ajax Autocomplete for Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the web site: http://www.devbridge.com/projects/autocomplete/
 *	
 *
 *	Customized for Planet Schule - update only if you know, what you are doing ;)
 * 	peter.kuehn@wmdb.de, 20.01.2010
 *
 */

var Autocomplete = function(el, options){
  this.el = $(el);
  this.id = this.el.identify();
  this.el.setAttribute('autocomplete','off');
  this.suggestions = [];
  this.data = [];
  this.badQueries = [];
  this.selectedIndex = -1;
  this.currentValue = this.el.value;
  this.intervalId = 0;
  this.cachedResponse = [];
  this.instanceId = null;
  this.onChangeInterval = null;
  this.ignoreValueChange = false;
  this.serviceUrl = options.serviceUrl;
  this.options = {
    autoSubmit:false,
    minChars:1,
    maxHeight:300,
    deferRequestBy:0,
    width:0,
    container:null
  };
  if(options){ Object.extend(this.options, options); }
  
   this.initialize();
};

Autocomplete.instances = [];
Autocomplete.isDomLoaded = false;

Autocomplete.getInstance = function(id){
  var instances = Autocomplete.instances;
  var i = instances.length;
  while(i--){ if(instances[i].id === id){ return instances[i]; }}
};

Autocomplete.highlight = function(value, re){
  return value.replace(re, function(match){ return '<strong>' + match + '<\/strong>' });
};

Autocomplete.prototype = {

  killerFn: null,

  initialize: function() {
    var me = this;
    this.killerFn = function(e) {
      if (!$(Event.element(e)).up('.autocomplete')) {
        me.killSuggestions();
        me.disableKillerFn();
      }
    } .bindAsEventListener(this);

    if (!this.options.width) { this.options.width = this.el.getWidth(); }

    var div = new Element('div', { style: 'position:absolute;' });
    div.update('<div class="autocomplete-w1"><div class="autocomplete-w2"><div class="autocomplete" id="Autocomplete_' + this.id + '" style="display:none; width:' + this.options.width + 'px;"></div></div></div>');

    this.options.container = $(this.options.container);
    if (this.options.container) {
      this.options.container.appendChild(div);
      this.fixPosition = function() { };
    } else {
      document.body.appendChild(div);
    }

    this.mainContainerId = div.identify();
    this.container = $('Autocomplete_' + this.id);
    this.fixPosition();
    
    Event.observe(this.el, window.opera ? 'keypress':'keydown', this.onKeyPress.bind(this));
    Event.observe(this.el, 'keyup', this.onKeyUp.bind(this));
    Event.observe(this.el, 'blur', this.enableKillerFn.bind(this));
    Event.observe(this.el, 'focus', this.fixPosition.bind(this));
    this.container.setStyle({ maxHeight: this.options.maxHeight + 'px' });
    this.instanceId = Autocomplete.instances.push(this) - 1;
  },

  fixPosition: function() {
    var offset = this.el.cumulativeOffset();
    $(this.mainContainerId).setStyle({ top: (offset.top + this.el.getHeight()) + 'px', left: offset.left + 'px' });
  },

  enableKillerFn: function() {
    Event.observe(document.body, 'click', this.killerFn);
  },

  disableKillerFn: function() {
    Event.stopObserving(document.body, 'click', this.killerFn);
  },

  killSuggestions: function() {
    this.stopKillSuggestions();
    this.intervalId = window.setInterval(function() { this.hide(); this.stopKillSuggestions(); } .bind(this), 300);
  },

  stopKillSuggestions: function() {
    window.clearInterval(this.intervalId);
  },

  onKeyPress: function(e) {
    if (!this.enabled) { return; }
    // return will exit the function
    // and event will not fire
    switch (e.keyCode) {
      case Event.KEY_ESC:
        this.el.value = this.currentValue;
        this.hide();
        break;
      case Event.KEY_TAB:
      case Event.KEY_RETURN:
        if (this.selectedIndex === -1) {
          this.hide();
          return;
        }
        this.select(this.selectedIndex);
        if (e.keyCode === Event.KEY_TAB) { return; }
        break;
      case Event.KEY_UP:
        this.moveUp();
        break;
      case Event.KEY_DOWN:
        this.moveDown();
        break;
      default:
        return;
    }
    Event.stop(e);
  },

  onKeyUp: function(e) {
    switch (e.keyCode) {
      case Event.KEY_UP:
      case Event.KEY_DOWN:
        return;
    }
    clearInterval(this.onChangeInterval);
    if (this.currentValue !== this.el.value) {
      if (this.options.deferRequestBy > 0) {
        // Defer lookup in case when value changes very quickly:
        this.onChangeInterval = setInterval((function() {
          this.onValueChange();
        }).bind(this), this.options.deferRequestBy);
      } else {
        this.onValueChange();
      }
    }
  },

  onValueChange: function() {
    clearInterval(this.onChangeInterval);
    this.currentValue = this.el.value;
    this.selectedIndex = -1;
    if (this.ignoreValueChange) {
      this.ignoreValueChange = false;
      return;
    }
    if (this.currentValue === '' || this.currentValue.length < this.options.minChars) {
      this.hide();
    } else {
      this.getSuggestions();
    }
  },

  getSuggestions: function() {
    var cr = this.cachedResponse[this.currentValue];
    if (cr && Object.isArray(cr.suggestions)) {
      this.suggestions = cr.suggestions;
      this.data = cr.data;
      this.suggest();
    } else if (!this.isBadQuery(this.currentValue)) {
   	  //var searchMode = $('mnogosearch-mode') ? $F('mnogosearch-mode'):'s';
      new Ajax.Request(this.serviceUrl, {
        parameters: { 'mnogosearch[query]': this.currentValue, 'mnogosearch[field]': this.id, 'mnogosearch[mode]':  's'},
        onComplete: this.processResponse.bind(this),
        method: 'get'
      });
    }
  },

  isBadQuery: function(q) {
    var i = this.badQueries.length;
    while (i--) {
      if (q.indexOf(this.badQueries[i]) === 0) { return true; }
    }
    return false;
  },

  hide: function() {
    this.enabled = false;
    this.selectedIndex = -1;
    this.container.hide();
  },

  suggest: function() {
    if (this.suggestions.length === 0) {
      this.hide();
      return;
    }
    var content = [];
    var re = new RegExp('\\b' + this.currentValue.match(/[a-zA-Z0-9�������]+/g).join('|\\b'), 'gi');
    this.suggestions.each(function(value, i) {
      content.push((this.selectedIndex === i ? '<div class="selected"' : '<div'), ' title="', value, '" onclick="Autocomplete.instances[', this.instanceId, '].select(', i, ');" onmouseover="Autocomplete.instances[', this.instanceId, '].activate(', i, ');">', Autocomplete.highlight(value, re), '</div>');
    } .bind(this));
    this.enabled = true;
    this.container.update(content.join('')).show();
  },

  processResponse: function(xhr) {
    var response;
    try {
      response = xhr.responseText.evalJSON();
      if (!Object.isArray(response.data)) { response.data = []; }
    } catch (err) { return; }
    this.suggestions = response.suggestions;
    this.data = response.data;
    this.cachedResponse[response.query] = response;
    if (response.suggestions.length === 0) { this.badQueries.push(response.query); }
    if (response.query === this.currentValue) { this.suggest(); }
  },

  activate: function(index) {
    var divs = this.container.childNodes;
    var activeItem;
    // Clear previous selection:
    if (this.selectedIndex !== -1 && divs.length > this.selectedIndex) {
      divs[this.selectedIndex].className = '';
    }
    this.selectedIndex = index;
    if (this.selectedIndex !== -1 && divs.length > this.selectedIndex) {
      activeItem = divs[this.selectedIndex]
      activeItem.className = 'selected';
    }
    return activeItem;
  },

  deactivate: function(div, index) {
    div.className = '';
    if (this.selectedIndex === index) { this.selectedIndex = -1; }
  },

  select: function(i) {
    var selectedValue = this.suggestions[i];
    if (selectedValue) {
      this.el.value = selectedValue;
      if (this.options.autoSubmit && this.el.form) {
        this.el.form.submit();
      }
      this.ignoreValueChange = true;
      this.hide();
      this.onSelect(i);
    }
  },

  moveUp: function() {
    if (this.selectedIndex === -1) { return; }
    if (this.selectedIndex === 0) {
      this.container.childNodes[0].className = '';
      this.selectedIndex = -1;
      this.el.value = this.currentValue;
      return;
    }
    this.adjustScroll(this.selectedIndex - 1);
  },

  moveDown: function() {
    if (this.selectedIndex === (this.suggestions.length - 1)) { return; }
    this.adjustScroll(this.selectedIndex + 1);
  },

  adjustScroll: function(i) {
    var container = this.container;
    var activeItem = this.activate(i);
    var offsetTop = activeItem.offsetTop;
    var upperBound = container.scrollTop;
    var lowerBound = upperBound + this.options.maxHeight - 25;
    if (offsetTop < upperBound) {
      container.scrollTop = offsetTop;
    } else if (offsetTop > lowerBound) {
      container.scrollTop = offsetTop - this.options.maxHeight + 25;
    }
    this.el.value = this.suggestions[i];
  },

  onSelect: function(i) {
    (this.options.onSelect || Prototype.emptyFunction)(this.suggestions[i], this.data[i]);
  }

};

var dyn_zpx_destUrl, mnogosearchHandleClickTargetUrl, IVWzpxUrl, IVWdestUrl;

function dyn_zpx_onClick (zpxUrl,destUrl) {
  dyn_zpx_destUrl = destUrl;
  var now = new Date();
  var pixel = new Image();
  pixel.src = zpxUrl +  escape(document.URL) +"&d=" + now.getTime();
  pixel.onload = dyn_zpx_Done;
  pixel.onabort = dyn_zpx_Done;
  pixel.onerror = dyn_zpx_Done;
  return false;
}
function dyn_zpx_Done() {
  document.location = dyn_zpx_destUrl;
}

mnogosearchHandleClick = function(mnogosearchHandleClickEl,zpxUrl,destUrl){
	mnogosearchHandleClickTargetUrl = mnogosearchHandleClickEl.getAttribute('href');
	IVWzpxUrl = zpxUrl;
	IVWdestUrl = destUrl;
	var rowId = mnogosearchHandleClickEl.up('div.mnogosearch-resultrow').getAttribute('id');
	var mypixel = new Image();
	mypixel.src = 'index.php?eID=wmdb_swr_mnogosearch_fe&mnogosearch[mode]=clicktrack&c[c_src_url]='+rowId+'&c[c_linktype]='+mnogosearchHandleClickEl.getAttribute('class')+'&c[c_link]='+mnogosearchHandleClickEl.getAttribute('href');
	mypixel.onload = mnogosearchHandleClickDone;
	mypixel.onabort = mnogosearchHandleClickDone;
	mypixel.onerror = mnogosearchHandleClickDone;
	return false;
}
	
mnogosearchHandleClickDone = function(){
	if(IVWzpxUrl && IVWdestUrl){
		return dyn_zpx_onClick (IVWzpxUrl,IVWdestUrl);
	}else{
		var testWpool = /\/wissenspool\//;
		var testWpoolFileadmin = /\/fileadmin\//;
		if(!testWpool.test(mnogosearchHandleClickTargetUrl) && !testWpoolFileadmin.test(mnogosearchHandleClickTargetUrl)){
			//swrMnogoSearchPopUpWin = window.open(mnogosearchHandleClickTargetUrl,'swrMnogoSearchPopUp','width=800,height=600,resizable=yes,menubar=yes,scrollbars=yes,status=yes,location=yes,toolbar=yes');
			//return swrMnogoSearchPopUpWin ? false : true;
			//return false;
		//}else{
			document.location.href = mnogosearchHandleClickTargetUrl;
			//return true;
		}
		//return false;
	}
}


getSearchFormDefault = function(id){
	var defaultValue='';
	if(id=='suchw'){
		defaultValue='Suchbegriff';
	}else{
		switch($F('mnogosearch-mode')){
			case 'kl':
				defaultValue='Schlagwortliste filtern nach';
			break;
			case 'ks':
				defaultValue='Schlagworte';
			break;
			case 's':
			case 'a':
			default:
				defaultValue='Suchbegriff';
			break;
		}
	}
	return defaultValue;
}

searchFormSetDefault = function(){
	if(this.value==''){
		var defaultValue = getSearchFormDefault(this.id);
		this.setStyle({'color':'#AAAAAA'});
		this.value=defaultValue;
	}
};
searchFormRemoveDefault = function(){
	var defaultValue = getSearchFormDefault(this.id);
	if(this.value==defaultValue) this.value='';
	this.setStyle({'color':'#000000'});
}

toggleAdvancedSearchForm = function(){
	var toggle = $('mnogosearchLnkAdvanced');
	$('mnogosearchAdvanced').toggle();
	if($('mnogosearchAdvanced').visible()){
		toggle.setStyle({'background':'url("/typo3conf/ext/wmdb_swr_mnogosearch_fe/res/icon-link-selected.gif") no-repeat scroll left center transparent'});
	}else{
		toggle.setStyle({'background':'url("../img/icon-link.gif") no-repeat scroll left center transparent'});
	}
	return false;
}

mnogosearchInit = function() {
	if(mnogosearchInitDone){
		return true;
	}else{
		try {
			if($('mnogosearchAdvanced')){
				var toggle = $('mnogosearchLnkAdvanced');
				Event.observe(toggle,'click',toggleAdvancedSearchForm);
				$('mnogosearchLnkAdvancedWrap').show();
				
				//traverse all input-fields of the form
				$('mnogosearch-form').getInputs().each(function(el){
					//if its a checked radio
					if(el.type=='radio' && el.checked){
						if(el.value=='' || el.value=='06' || el.value=='0601'){
							$$('tr.mnogosearchAdvancedDates').each(function(el){el.show()});
						}
					}
				});
				
				var testAdvanced = /\[m\]=a|\[f\]=[0-9]|\[kl\]=[-\d]|\[s\]=[0-9]|\[z\]=[0-9]/;
				if(testAdvanced.exec(unescape(document.URL))==null){
					$('mnogosearchAdvanced').hide();
					toggle.setStyle({'background':'url("../img/icon-link.gif") no-repeat scroll left center transparent'});
				}
				var catSelects = $$('input.mnogosearchCatSelects');
				if(catSelects){
					catSelects.each(function(c){
						Event.observe(c,'click',function(el){
							var sel = Event.element(el).value;
							if(sel=='' || sel=='06' || sel=='0601'){
								$$('tr.mnogosearchAdvancedDates').each(function(el){el.show()});
							}else{
								$$('tr.mnogosearchAdvancedDates').each(function(el){el.hide()});
							}
						})
					});
				}
			}
			var m = $('mnogosearch-input');
			if(m!=null){
				var defaultValue = getSearchFormDefault('mnogosearch-input');
				if(m.value=='' || m.value==defaultValue){
					m.setStyle({'color':'#AAAAAA'}); m.value=defaultValue;
				}
				Event.observe('mnogosearch-input','focus',searchFormRemoveDefault);
				Event.observe('mnogosearch-input','blur',searchFormSetDefault);
				new Autocomplete('mnogosearch-input',{
					serviceUrl: '/index.php?eID=wmdb_swr_mnogosearch_fe'
				});
			}
			var s = $('suchw');
			if(s!=null){
				var defaultValue = getSearchFormDefault('suchw');
				if(s.value=='' || s.value==defaultValue || s.value=='Schlagworte' || s.value=='Schlagwortliste filtern nach'){
					s.setStyle({'color':'#AAAAAA'}); s.value=defaultValue;
				}
				Event.observe('suchw','focus',searchFormRemoveDefault);
		  		Event.observe('suchw','blur',searchFormSetDefault);
				new Autocomplete('suchw',{
					serviceUrl: '/index.php?eID=wmdb_swr_mnogosearch_fe'
				});
			}
			$$('div.mnogosearch-resultrow a').each(function(el){
				el.identify();
			})
			mnogosearchInitDone = true;
		}catch(e){
		}
	}
}

Event.observe(document, 'dom:loaded', function(){ 
		Autocomplete.isDomLoaded = true; 
		mnogosearchInitDone = false;
		mnogosearchInit();
}, false);