/**
 *  search.js
 *
 *  Events and AJAX responses used to interact with the search app.
 *
 *	- Quicksearch
 * 	- Find a suburb by name or postcode
 *	- Advanced search 
 *
 */


// open the infoWindow on the map with the site details for the site ID specified
function showSiteOnMap(siteID) {
	$j('#focus-map').show();
	$j("body").animate({ scrollTop: 0 }, "slow"); 
	if (window.map==null) {
		window.siteIDtoShow = siteID;
		mapLoadForID('mapDelayed');
	} else {
		id = 'id' + siteID;
		//console.log(".......... loading site info for " + id);
		marker = window.siteMarkers[id];
		//console.log(".......... loading site info for " + marker.title);
		if (marker) {
			window.map.openInfoWindowHtml( marker.getLatLng(), infoWindowContent(marker));
		} else {
			//console.log("No marker for " + id);
		}
	}
}

/* ----------------- Advanced Search ------------------------- */

//-------------------------------------------------------------------------------------------------------
// ClearTypeFadeTo / ClearTypeFadeIn / ClearTypeFadeOut
//
// Custom fade in and fade out functions for jQuery that will work around
// IE's bug with bold text in elements that have opacity filters set when
// also using Window's ClearType text rendering.
//
// New Parameter:
// bgColor    The color to set the background if none specified in the CSS (default is '#fff')
//
// Examples:
// $('div').ClearTypeFadeIn({ speed: 1500 });
// $('div').ClearTypeFadeIn({ speed: 1500, bgColor: '#ff6666', callback: myCallback });
// $('div').ClearTypeFadeOut({ speed: 1500, callback: function() { alert('Fade Out complete') } });
//
// Notes on the interaction of ClearType with DXTransforms in IE7
// http://blogs.msdn.com/ie/archive/2006/08/31/730887.aspx
	$j.fn.ClearTypeFadeTo = function(options) {
		if (options)
			$j(this)
				.show()
				.each(function() {
					if (jQuery.browser.msie) {
						// Save the original background color
						$j(this).attr('oBgColor', $j(this).css('background-color'));
						// Set the bgColor so that bold text renders correctly (bug with IE/ClearType/bold text)
						// !!! Disabled the following as it does not seem to be picking up the element bgColor, causing sites to be unviewable in IE (-cll)
						//$j(this).css({ 'background-color': (options.bgColor ? options.bgColor : '#fff') })
					}
				})
				.fadeTo(options.speed, options.opacity, function() {
					if (jQuery.browser.msie) {
						// ClearType can only be turned back on if this is a full fade in or
						// fade out. Partial opacity will still have the problem because the
						// filter style must remain. So, in the latter case, we will leave the
						// background color and 'filter' style in place.
						if (options.opacity == 0 || options.opacity == 1) {
							// Reset the background color if we saved it previously
							$j(this).css({ 'background-color': $j(this).attr('oBgColor') }).removeAttr('oBgColor');
							// Remove the 'filter' style to restore ClearType functionality.
							$j(this).get(0).style.removeAttribute('filter');
						}
					}
					if (options.callback != undefined) options.callback();
				});
	};

	$j.fn.ClearTypeFadeIn = function(options) {
		if (options)
			$j(this)
				.css({ opacity: 0 })
				.ClearTypeFadeTo({ speed: options.speed, opacity: 1, callback: options.callback });
	};

	$j.fn.ClearTypeFadeOut = function(options) {
		if (options)
			$j(this)
				.css({ opacity: 1 })
				.ClearTypeFadeTo({ speed: options.speed, opacity: 0, callback: options.callback });
	};

/* -----*/

function toggleAdvancedSearch() {
	if ($j('#advanced_search').is(':visible')) {
		hideAdvancedSearch();
	} else {
		showAdvancedSearch();
	}
}

function showAdvancedSearch() {

	$j('a.show-advanced-search span').addClass('adv_search_active').text("Fewer options");

	$j('form#search').ClearTypeFadeTo({ speed: 450, opacity: 0.4 });
	$j('div#content').ClearTypeFadeTo({ speed: 450, opacity: 0.4 });
	$j('#advanced_search').show('slow', function() {
	});

	// install watcher to detect clicks on the background					
	$j(document).bind('mousedown', function(e) { 
		// hide advanced search if click was not inside advanced search area
		if(!$j(e.target).is('#advanced_search_container *') && !$j(e.target).is('div.ac_results *') && !$j(e.target).is('.ui-autocomplete *')) {
			hideAdvancedSearch();
		}
		
	});
}

function hideAdvancedSearch() {
	$j(document).unbind('mousedown');
	$j('form#search').ClearTypeFadeTo({ speed: 450, opacity: 1 });
	$j('div#content').ClearTypeFadeTo({ speed: 450, opacity: 1 });	
	$j('#advanced_search').hide('slow');

	$j('a.show-advanced-search span').removeClass('adv_search_active').text("More options");

}


jQuery.fn.clearForm = function() {
	return this.each(function() {
		var type = this.type, tag = this.tagName.toLowerCase();
		if (tag == 'form')
			return $j(':input',this).clearForm();
		if (type == 'text' || type == 'password' || tag == 'textarea')
			this.value = '';
		else if (type == 'checkbox' || type == 'radio')
			this.checked = false;
		else if (tag == 'select')
			this.selectedIndex = -1;
	});
};

function clearAdvancedSearch() {
	$j('#search2').clearForm();
}


// clear default values from text fields with class defaultText that match the "default" attribute
function clearDefaultValues() {
	$j(".defaultText").each(function(srcc)
    {
        if ($j(this).val() == $j(this).attr("default"))
        {
            $j(this).val("");
        }
    });
}

/* --------------- suburbs, states and postcodes ----------------- */

// extract suburb name, eg NEWTOWN from 'NEWTOWN 2042'
function suburbFromString(s) {
	postcodeLength = 4;
	if (s.length >= postcodeLength) {
		postcode = parseInt(s.substring(s.length-postcodeLength, s.length));
		if (postcode) {
			return jQuery.trim(s.substring(0,s.length-postcodeLength));
		}
	}
	return s;
}

//extract postcode, eg 2042 from 'NEWTOWN 2042'
function postcodeFromString(s) {
	postcodeLength = 4;
	if (s.length >= postcodeLength) {
		postcode = parseInt(s.substring(s.length-postcodeLength, s.length));
		if (postcode) {
			return "" + postcode;
		}
	}
	return '';
}

// work out state from an Australian postcode
function stateFromPostcode(postcode) {
	if (postcode.length < 4) return '';
	p = parseInt(postcode);
	if (p==null) return '';
	if (p >= 100 && p <= 2599 ) return "NSW";
	if (p >= 2619 && p <= 2898 ) return "NSW";
	if (p >= 2921 && p <= 2999 ) return "NSW";
	if (p >= 200 && p <= 299 ) return "ACT";
	if (p >= 2600 && p <= 2618 ) return "ACT";
	if (p >= 2900 && p <= 2920 ) return "ACT";
	if (p >= 3000 && p <= 3999 ) return "VIC";
	if (p >= 8000 && p <= 8999 ) return "VIC";
	if (p >= 4000 && p <= 4999 ) return "QLD";
	if (p >= 9000 && p <= 9999 ) return "QLD";
	if (p >= 5000 && p <= 5999 ) return "SA";
	if (p >= 6000 && p <= 6999 ) return "WA";
	if (p >= 7000 && p <= 7999 ) return "TAS";
	if (p >= 800 && p <= 999 ) return "NT";
	return '';
}


// set postcode and state fields from value of suburb field and remove the postcode from the suburb field
// if the postcode field does not exist, leave the suburb field alone
function setPostcodeAndStateFromSuburb(searchForm, suburbString) {
	if (suburbString) {
		var suburb = suburbFromString(suburbString);
		var postcode = postcodeFromString(suburbString); // otherwise it thinks it's a number
		var state = postcode.length==0 ? '' : stateFromPostcode(postcode);
		if (suburb.length > 0) {
			if (searchForm.postcode && postcode.length>0) {
				$j("#"+searchForm.postcode.id).val(postcode);
				//$j("."+suburbID).val(suburb);
			}
			if (searchForm.state && state.length>0) {
				$j("#"+searchForm.state.id).val(state);
			}		
		}
	}
	return false;
}

// sets suburb field after auto complete dialog closes
function setSuburbAfterAutoComplete(searchForm) {
	var suburb = suburbFromString($j("#"+searchForm.suburb.id).val());
	if (suburb.length > 0) {
		$j("#"+searchForm.suburb.id).val(suburb);
	}
}

jQuery.fn.quickSearch = function(url, settings) {
	return this.each( function() {
		var minInput = 3;
		var textInput = $j(this);
		var divContainer = $j('.quicksearch-wrap');
		var thisObject = this;
		var selectedIndex = -1;
		
		// function triggered after contents is updated
		updatedFunction = function() {
			show();
			
			// observe checkboxes
			$j('.suburb-choice').each(function() {
				$j(this).bind("click", updateFunction);
			});
		};
		
		loadFunction = function(url, params, callbackFunction) {
			selectedIndex = -1;
			divContainer.load(url, params, callbackFunction);
		};
		
		// function for updating the list via site selections
		updateFunction = function withToggle(event) {
			var srcElement = null;
			if (event && (srcElement = event['srcElement'])) {
				
				// build array of query params
				var params = [];
				$j('.suburb-choice:checked').each(function() {
					var me = $j(this);
					var val = me.attr('value');
					params.push(val);
				});
				textInput.addClass('throbber');
				var terms = textInput.val();
				loadFunction(url, {text: terms, suburb: params}, updatedFunction);
			}
		};
		
		// take terms and query the server-side
		matchesFunction = function getMatches(terms) {
			if (!terms || terms.length < minInput) {
				hide();
				return;
			}
			textInput.addClass('throbber');
			loadFunction(url, {text: terms}, updatedFunction);
		};
		
		function show() {
			textInput.removeClass('throbber');
			$j('div.advanced-search-button').fadeTo(0, 0);
			hideAdvancedSearch();
			divContainer.addClass('show-quick-search');
			//divContainer.removeShadow();
			/*divContainer.slideDown('slow', function() {
				divContainer.dropShadow();
			});*/
			
			// install watcher to detect clicks on the background
			$j(document).bind('mousedown.quicksearch', function(click) {
				// hide quicksearch if click was not inside quicksearch area
				if ($j(click.target).parents('div.quicksearch-wrap').length == 0 && click.target != thisObject) {
					hide();
				}
			});
		}
		
		function hide() {
			selectedIndex = -1;
			allItems = null;
			textInput.removeClass('throbber');
//			divContainer.removeShadow();
			$j(document).unbind('mousedown.quicksearch');
			divContainer.slideUp(400);
			$j('div.advanced-search-button').fadeTo(0, 1);
			divContainer.removeClass('show-quick-search');
		}
		
		textInput.keyup(function(key) {
			if (key.which == 27) { // escape
				hide();
				return false;
			}

			// copy the text of the quick search field into the advanced search field
			$j("#adv_keyword").val($j(this).attr('value'));

			oldIndex = selectedIndex;
			allItems = divContainer.children('div').children('ul').children('li').not('.title');
			selectedItem = null;
			if (allItems.size() > 0) {
				if (selectedIndex >= 0) {
					selectedItem = allItems.eq(selectedIndex);
				}
				
				if (key.which == 13) { // return key
					if (selectedItem == null) {
						$j('form#search').submit();
						return true;
					} else {
						window.location = selectedItem.children('a').attr('href');
						key.preventDefault();
						return false;
					}
				}
				

				if (allItems.size() == 1 && (key.which == 40 || key.which == 9 || key.which == 38)) {
					selectedIndex = 0;
				}
				else
				{
					if (key.which == 40 || key.which == 9) { // down key
						if (selectedIndex >= (allItems.size() - 1)) {
							selectedIndex = 0;
						} else {
							selectedIndex++;
						}
					}
					
					if (key.which == 38) { // up key
						if (selectedIndex <= 0) {
							selectedIndex = allItems.size() - 1;
						} else {
							selectedIndex--;
						}
					}
					// update if necessary
					if (selectedIndex != oldIndex) {
						if (selectedItem != null) {
							selectedItem.removeClass('selected');
						}
						
						allItems.eq(selectedIndex).addClass('selected');
					}
				}
				
				return false;
			}
			return true;
		});
		
		// observe quicksearch field delay == 1.0seconds
		// depends on jquery-util/query.utils[.min].js
		textInput.delayedObserver(function() {
			matchesFunction(textInput.val());
		}, 1.0);
	});
};

jQuery.fn.hideQuickSearch = function(url, settings) {
	return this.each( function() {
		this.hide();
	})
};


$j(document).ready(function() {
	initSuburbAutoComplete();		
});