/**
 * jQuery lightBox plugin
 * This jQuery plugin was inspired and based on Lightbox 2 by Lokesh Dhakar (http://www.huddletogether.com/projects/lightbox2/)
 * and adapted to me for use like a plugin from jQuery.
 * @name jquery-lightbox-0.5.js
 * @author Leandro Vieira Pinho - http://leandrovieira.com
 * @version 0.5
 * @date April 11, 2008
 * @category jQuery plugin
 * @copyright (c) 2008 Leandro Vieira Pinho (leandrovieira.com)
 * @license CC Attribution-No Derivative Works 2.5 Brazil - http://creativecommons.org/licenses/by-nd/2.5/br/deed.en_US
 * @example Visit http://leandrovieira.com/projects/jquery/lightbox/ for more informations about this jQuery plugin
 */

// Offering a Custom Alias suport - More info: http://docs.jquery.com/Plugins/Authoring#Custom_Alias
(function($) {
	/**
	 * $ is an alias to jQuery object
	 *
	 */
	$.fn.lightBox = function(settings) {
		// Settings to configure the jQuery lightBox plugin how you like
		settings = jQuery.extend({
			// Configuration related to overlay
			//overlayBgColor: 		'#000',		// (string) Background color to overlay; inform a hexadecimal value like: #RRGGBB. Where RR, GG, and BB are the hexadecimal values for the red, green, and blue values of the color.
			//overlayOpacity:			0.8,		// (integer) Opacity value to overlay; inform: 0.X. Where X are number from 0 to 9
			// Configuration related to navigation
			fixedNavigation:		true,		// (boolean) Boolean that informs if the navigation (next and prev button) will be fixed or not in the interface.
			// Configuration related to images
			imageLoading:			'../img/ajax-loader.gif',		// (string) Path and the name of the loading icon
			imageBtnPrev:			'../img/prev.gif',			// (string) Path and the name of the prev button image
			imageBtnNext:			'../img/next.gif',			// (string) Path and the name of the next button image
			imageBtnClose:			'../img/images/lightbox-btn-close.gif',		// (string) Path and the name of the close btn
			imageBlank:				'../img/images/lightbox-blank.gif',			// (string) Path and the name of a blank image (one pixel)
			// Configuration related to container image box
			containerBorderSize:	5,			// (integer) If you adjust the padding in the CSS for the container, #lightbox-container-image-box, you will need to update this value
			containerResizeSpeed:	400,		// (integer) Specify the resize duration of container image. These number are miliseconds. 400 is default.
			// Configuration related to texts in caption. For example: Image 2 of 8. You can alter either "Image" and "of" texts.
			txtImage:				'Imagem',	// (string) Specify text "Image"
			txtOf:					'de',		// (string) Specify text "of"
			// Configuration related to keyboard navigation
			keyToClose:				'c',		// (string) (c = close) Letter to close the jQuery lightBox interface. Beyond this letter, the letter X and the SCAPE key is used to.
			keyToPrev:				'p',		// (string) (p = previous) Letter to show the previous image
			keyToNext:				'v',		// (string) (n = next) Letter to show the next image.
			// Donï¿½t alter these variables in any way
			imageArray:				[],
			activeImage:			0
		},settings);
		// Caching the jQuery object with all elements matched
		var jQueryMatchedObj = this; // This, in this context, refer to jQuery object
		/**
		 * Initializing the plugin calling the start function
		 *
		 * @return boolean false
		 */
		function _initialize() {
			_start(this,jQueryMatchedObj); // This, in this context, refer to object (link) which the user have clicked
			return false; // Avoid the browser following the link
		}
		/**
		 * Start the jQuery lightBox plugin
		 *
		 * @param object objClicked The object (link) whick the user have clicked
		 * @param object jQueryMatchedObj The jQuery object with all elements matched
		 */
		function _start(objClicked,jQueryMatchedObj) {
			// Hime some elements to avoid conflict with overlay in IE. These elements appear above the overlay.
			//$('embed, object, select').css({'visibility' : 'hidden'});
			// Call the function to create the markup structure; style some elements; assign events in some elements.
			_set_interface();
			// Unset total images in imageArray
			settings.imageArray.length = 0;
			// Unset image active information
			settings.activeImage = 0;
			// We have an image set? Or just an image? Letï¿½s see it.
			if ( jQueryMatchedObj.length == 1 ) {
				settings.imageArray.push(new Array(objClicked.getAttribute('href'),objClicked.getAttribute('title'),objClicked.getAttribute('rel')));
			} else {
				// Add an Array (as many as we have), with href and title atributes, inside the Array that storage the images references		
				for ( var i = 0; i < jQueryMatchedObj.length; i++ ) {
					settings.imageArray.push(new Array(jQueryMatchedObj[i].getAttribute('href'),jQueryMatchedObj[i].getAttribute('title'),jQueryMatchedObj[i].getAttribute('rel')));
				}
			}
			while ( settings.imageArray[settings.activeImage][0] != objClicked.getAttribute('href') ) {
				settings.activeImage++;
			}
			// Call the function that prepares image exibition
			_set_image_to_view();
		}
		
		/**
		 * Create the jQuery lightBox plugin interface
		 *
		 * The HTML markup will be like that:
			<div id="jquery-overlay"></div>
			<div id="jquery-lightbox">
				<div id="lightbox-container-image-box">
						<div id="lightbox-container-image">
							<div id="lightbox-nav">
							<a href="#" id="lightbox-nav-btnPrev"></a>
							<a href="#" id="lightbox-nav-btnNext"></a>
						</div>
						<img src="../fotos/XX.jpg" id="lightbox-image">
						<div id="lightbox-loading">
							<a href="#" id="lightbox-loading-link">
								<img src="../images/lightbox-ico-loading.gif">
							</a>
						</div>
					</div>
				</div>
				<div id="lightbox-container-image-data-box">
					<div id="lightbox-container-image-data">
						<div id="lightbox-image-details">
							<span id="lightbox-image-details-caption"></span>
							<span id="lightbox-image-details-currentNumber"></span>
						</div>
						<div id="lightbox-secNav">
							<a href="#" id="lightbox-secNav-btnClose">
								<img src="../images/lightbox-btn-close.gif">
							</a>
						</div>
					</div>
				</div>
			</div>
		 *
		 */
		function _set_interface() {
			// Apply the HTML markup into body tag
			$('#global-gallery').hide();

			//$('#col_right').hide();
			$('#galeria').append('<div id="jquery-lightbox"><div id="lightbox-container-image-box"><div style="" id="lightbox-nav"><a id="lightbox-nav-btnPrev" href="#" ></a><a id="lightbox-nav-btnNext" href="#" ></a></div><div id="lightbox-container-image"><img id="lightbox-image"><div id="lightbox-loading"><a href="#" id="lightbox-loading-link"><img src="' + settings.imageLoading + '"></a></div></div></div><div id="lightbox-container-image-data-box"><div id="lightbox-container-image-data"><div id="lightbox-image-details"><span id="lightbox-image-details-caption"></span><span id="lightbox-image-details-currentNumber"></span><div id="lightbox-image-coments" style="padding-top: 10px; marin-top: 10px; width: 500px; "><div id="lightbox-image-content-coments"></div><div id="lightbox-image-form-coments" style="visibility: hidden;"><form id="comentarios" method="post"><p style="margin:5px 0;">Você ainda pode digitar <span id="num" style="font-weight: bold; color:#FF0000; ">140</span> caracteres</p><label style="padding: 10px 0; diplay: inline-block"><textarea color:#ccc; class="imgComent" name="imgComent" cols="60" rows="2">"Escreva seu comentario"</textarea></label><input type="hidden" id="imgID" name="imgID" value="" /><label style="diplay: inline-block"><input style="padding:5px 10px; background: #eee; border: #ccc 1px solid;" type="button" id="save" value="Salvar" /></label></form></div></div></div><div id="lightbox-secNav"><a href="#" id="lightbox-secNav-btnClose"><img src="' + settings.imageBtnClose + '"></a></div></div></div></div>');
	
			// Assigning click events in elements to close overlay
			$('#jquery-overlay').click(function() {
				_finish();									
			});

			// Assign the _finish function to lightbox-loading-link and lightbox-secNav-btnClose objects
			$('#lightbox-loading-link,#lightbox-secNav-btnClose').click(function() {
				_finish();
				return false;
			});

			//Salva e retorna o comentário da foto
			$('#save').click(function() {
				var coment = $(".imgComent").val();
				var imgID = $("#imgID").val();
				
				$.post("galeria/add_coment", {imgID: imgID, imgComent: coment}, function(data){
					if(data == 'userNaoLogado'){
						$("#lightbox-image-content-coments").css({'width': 500, 'height': 30, 'overflow': 'hidden'});
						$("#lightbox-image-content-coments").html('<p><strong>Somente usuarios cadastrados podem ler e postar comentarios</strong></p><br />');
					}else if(data == 0){
						$("#lightbox-image-content-coments").css({'width': 500, 'height': 20, 'overflow': 'hidden'});
						$("#lightbox-image-form-coments").css({'visibility': 'visible'});
						$("#lightbox-image-content-coments").html('<strong>Sem comentarios</strong>');
					}else{
						$("#lightbox-image-content-coments").css({'width': 500, 'height': 300, 'overflow': 'scroll'});
						$("#lightbox-image-form-coments").css({'visibility': 'visible'});
						$("#lightbox-image-content-coments").html('<p><strong>Comentarios</strong></p><br />'+data);
					}
				});
				return false;
			});

			//Apaga o valor do input de comentario
			$('.imgComent').click( function() {
				_disable_keyboard_navigation();

				if ($(this).val() == '"Escreva seu comentario"') {
				    $(this).val('');
				}

				//Evento de pressionar a tecla
				$(".imgComent").keypress(function(){
					var valor = $(this).val();
					var quant = 140;
					var total = valor.length;
					if(total <= quant){
						resto = quant - total;
						$('#num').text(resto);
					}else{
						$(this).val(valor.substr(0, quant));
					}
				});
				return false;
			});
			 
			// Quando a pessoa tirar o foco do input
			$('.imgComent').blur(function() {
				if ($(this).val() == "") {
				    $(this).val('"Escreva seu comentario"');
				}
				return false;
			});
		}

		//----------------------------------------------------------------------

		//Prepares image exibition; doing a imageï¿½s preloader to calculate itï¿½s size
		function _set_image_to_view() { // show the loading
			// Show the loading
			$('#lightbox-loading').show();
			if ( settings.fixedNavigation ) {
				$('#lightbox-image,#lightbox-container-image-data-box,#lightbox-image-details-currentNumber').hide();
			} else {
				// Hide some elements
				$('#lightbox-image,#lightbox-nav,#lightbox-nav-btnPrev,#lightbox-nav-btnNext,#lightbox-container-image-data-box,#lightbox-image-details-currentNumber').hide();
			}
			// Image preload process
			var objImagePreloader = new Image();
			objImagePreloader.onload = function() {
				$('#lightbox-image').attr('src',settings.imageArray[settings.activeImage][0]);
				// Perfomance an effect in the image container resizing it
				_resize_container_image_box(objImagePreloader.width,objImagePreloader.height);
				//	clear onLoad, IE behaves irratically with animated gifs otherwise
				objImagePreloader.onload=function(){};
			};
			objImagePreloader.src = settings.imageArray[settings.activeImage][0];
		};

		/**
		 * Perfomance an effect in the image container resizing it
		 *
		 * @param integer intImageWidth The imageï¿½s width that will be showed
		 * @param integer intImageHeight The imageï¿½s height that will be showed
		 */
		function _resize_container_image_box(intImageWidth,intImageHeight) {
			// Get current width and height
			var intCurrentWidth = $('#lightbox-container-image-box').width();
			var intCurrentHeight = $('#lightbox-container-image-box').height();
			
			var intWidthMax = 500;
			var intHeightMax = 500;
			var intPercent = 0;

			// If the width was taller than height, get how many percent it was
			if ( intImageWidth > intImageHeight ) {
				intPercent = (100 * intWidthMax) / intImageWidth;
			// If the height was taller than width, get how many percent it was
			}else{
				intPercent = (100 * intHeightMax) / intImageHeight;
			}

			// Calcula the new imageÂ´s size
			var intNewImageSizeX = intImageWidth * (intPercent / 100);
			var intNewImageSizeY = intImageHeight * (intPercent / 100);

			// Get the width and height of the selected image plus the padding
			var intWidth = (intNewImageSizeX + (settings.containerBorderSize * 2)); // Plus the imageï¿½s width and the left and right padding value
			var intHeight = (intNewImageSizeY + (settings.containerBorderSize * 4)); // Plus the imageï¿½s height and the left and right padding value
			// Diferences
			var intDiffW = intCurrentWidth - intWidth;
			var intDiffH = intCurrentHeight - intHeight;
			

			// Perfomance the effect
			$('#lightbox-container-image-box').animate({height: intHeight},settings.containerResizeSpeed,function() {
				_show_image(intNewImageSizeX, intNewImageSizeY);
			});

			//_show_image(intNewImageSizeX, intNewImageSizeY);
			if ( ( intDiffW == 0 ) && ( intDiffH == 0 ) ) {
				if ( $.browser.msie ) {
					___pause(250);
				} else {
					___pause(100);
				}
			}

			//$('#lightbox-container-image-data-box').css({width: intNewImageSizeX});
			$('#lightbox-nav-btnPrev,#lightbox-nav-btnNext').css({height: intNewImageSizeY + (settings.containerBorderSize * 2)});
		};
		/**
		 * Show the prepared image
		 *
		 */
		function _show_image(imgX,imgY) {
			$('#lightbox-loading').hide();
			$('#lightbox-image').attr({width: imgX, height: imgY}).fadeIn("slow", function() {
				_show_image_data();
				_set_navigation();
			});
			_preload_neighbor_images();
		};
		/**
		 * Show the image information
		 *
		 */
		function _show_image_data() {
			var getImgID = settings.imageArray[settings.activeImage][2];
			$('#lightbox-container-image-data-box').slideDown('fast');
			$('#lightbox-image-details-caption').hide();

			if ( settings.imageArray[settings.activeImage][1] ) {
				$('#lightbox-image-details-caption').html(settings.imageArray[settings.activeImage][1]).show();
			}
			// If we have a image set, display 'Image X of X'
			if ( settings.imageArray.length > 1 ) {
				$('#lightbox-image-details-currentNumber').html(settings.txtImage + ' ' + ( settings.activeImage + 1 ) + ' ' + settings.txtOf + ' ' + settings.imageArray.length).show();
			}
			$('#imgID').attr('value', getImgID);

			//Retorna o comentário da foto
			$.post("galeria/get_coments", {
				imgID: getImgID
				}, function(data){
				if(data == 'userNaoLogado'){
					$("#lightbox-image-content-coments").css({
						'width': 500,
						'height': 30,
						'overflow': 'hidden'
					});
					$("#lightbox-image-content-coments").html('<p><strong>Somente usuarios cadastrados podem ler e postar comentarios</strong></p><br />');
				}else if(data == 0){
					$("#lightbox-image-content-coments").css({
						'width': 500,
						'height': 20,
						'overflow': 'hidden'
					});
					$("#lightbox-image-form-coments").css({
						'visibility': 'visible'
					});
					$("#lightbox-image-content-coments").html('<strong>Sem comentarios</strong>');
				}else{
					$("#lightbox-image-content-coments").css({
						'width': 500,
						'height': 300,
						'overflow': 'scroll'
					});
					$("#lightbox-image-form-coments").css({
						'visibility': 'visible'
					});
					$("#lightbox-image-content-coments").html('<p><strong>Comentarios</strong></p><br />'+data);
				}
			});
		}

		//======================================================================

		/**
		 * Display the button navigations
		 *
		 */
		function _set_navigation() {
			var totalImgs = settings.imageArray.length;

			$('#lightbox-nav').show();
			
			if(settings.activeImage == 0 ){
				$('#lightbox-nav-btnPrev').hide();
				$('#lightbox-nav-btnNext').show();
			}else{
				$('#lightbox-nav-btnPrev').show();
				$('#lightbox-nav-btnNext').show();
			}
		
			totalImgs -= 1;
			
			if(settings.activeImage == totalImgs){
				$('#lightbox-nav-btnNext').hide();
				$('#lightbox-nav-btnPrev').show();
			}

			// Instead to define this configuration in CSS file, we define here. And itï¿½s need to IE. Just.
			$('#lightbox-nav-btnPrev,#lightbox-nav-btnNext').css({'background' : 'transparent url(' + settings.imageBlank + ') no-repeat'});
			
			// Show the prev button, if not the first image in set
			if ( settings.activeImage != 0 ) {
				if ( settings.fixedNavigation ) {
					$('#lightbox-nav-btnPrev').css({'background' : 'url(' + settings.imageBtnPrev + ') left 15% no-repeat'})
					.unbind()
					.bind('click',function() {
						if(settings.activeImage == 1 ){
							settings.activeImage = settings.activeImage - 1;
							_set_image_to_view();
							$('#lightbox-nav-btnPrev').hide();
							$('#lightbox-nav-btnNext').show();
						}else{
							settings.activeImage = settings.activeImage - 1;
							_set_image_to_view();
						}
						return false;
					});
				} else {
					// Show the images button for Next buttons
					$('#lightbox-nav-btnPrev').unbind().hover(function() {
						$(this).css({'background' : 'url(' + settings.imageBtnPrev + ') left 15% no-repeat'});
					},function() {
						$(this).css({'background' : 'transparent url(' + settings.imageBlank + ') no-repeat'});
					}).show().bind('click',function() {
						settings.activeImage = settings.activeImage - 1;
						_set_image_to_view();
						return false;
					});
				}
			}
			
			// Show the next button, if not the last image in set
			if ( settings.activeImage != ( settings.imageArray.length -1 ) ) {
				if ( settings.fixedNavigation ) {
					totalImgs -= 1;
					$('#lightbox-nav-btnNext').css({'background' : 'url(' + settings.imageBtnNext + ') right 15% no-repeat'})
						.unbind()
						.bind('click',function() {
							if(settings.activeImage == totalImgs ){
								settings.activeImage = settings.activeImage + 1;
								_set_image_to_view();
								$('#lightbox-nav-btnNext').hide();
								$('#lightbox-nav-btnPrev').show();
							}else{
								settings.activeImage = settings.activeImage + 1;
								_set_image_to_view();
							}
						return false;
					});
				} else {
					// Show the images button for Next buttons
					$('#lightbox-nav-btnNext').unbind().hover(function() {
						$(this).css({'background' : 'url(' + settings.imageBtnNext + ') right 15% no-repeat'});
					},function() {
						$(this).css({'background' : 'transparent url(' + settings.imageBlank + ') no-repeat'});
					}).show().bind('click',function() {
						settings.activeImage = settings.activeImage + 1;
						_set_image_to_view();
						return false;
					});
				}
			}
			// Enable keyboard navigation
			//_enable_keyboard_navigation();
		}
		/**
		 * Enable a support to keyboard navigation
		 *
		 */
		function _enable_keyboard_navigation() {
			$(document).keydown(function(objEvent) {
				_keyboard_action(objEvent);
			});
		}
		/**
		 * Disable the support to keyboard navigation
		 *
		 */
		function _disable_keyboard_navigation() {
			$(document).unbind();
		}
		/**
		 * Perform the keyboard actions
		 *
		 */
		function _keyboard_action(objEvent) {
			// To ie
			if ( objEvent == null ) {
				keycode = event.keyCode;
				escapeKey = 27;
			// To Mozilla
			} else {
				keycode = objEvent.keyCode;
				escapeKey = objEvent.DOM_VK_ESCAPE;
			}
			// Get the key in lower case form
			key = String.fromCharCode(keycode).toLowerCase();
			// Verify the keys to close the ligthBox
			if ( ( key == settings.keyToClose ) || ( key == 'x' ) || ( keycode == escapeKey ) ) {
				_finish();
			}
			// Verify the key to show the previous image
			if ( ( key == settings.keyToPrev ) || ( keycode == 37 ) ) {
				// If weï¿½re not showing the first image, call the previous
				if ( settings.activeImage != 0 ) {
					settings.activeImage = settings.activeImage - 1;
					_set_image_to_view();
					_disable_keyboard_navigation();
				}
			}
			// Verify the key to show the next image
			if ( ( key == settings.keyToNext ) || ( keycode == 39 ) ) {
				// If weï¿½re not showing the last image, call the next
				if ( settings.activeImage != ( settings.imageArray.length - 1 ) ) {
					settings.activeImage = settings.activeImage + 1;
					_set_image_to_view();
					_disable_keyboard_navigation();
				}
			}
		}
		/**
		 * Preload prev and next images being showed
		 *
		 */
		function _preload_neighbor_images() {
			if ( (settings.imageArray.length -1) > settings.activeImage ) {
				objNext = new Image();
				objNext.src = settings.imageArray[settings.activeImage + 1][0];
			}
			if ( settings.activeImage > 0 ) {
				objPrev = new Image();
				objPrev.src = settings.imageArray[settings.activeImage -1][0];
			}
		}
		/**
		 * Remove jQuery lightBox plugin HTML markup
		 *
		 */
		function _finish() {
			$('#jquery-lightbox').remove();
			$('#global-gallery').show("slow");
			//$('#jquery-overlay').fadeOut(function() {$('#jquery-overlay').remove();});
			// Show some elements to avoid conflict with overlay in IE. These elements appear above the overlay.
			//$('embed, object, select').css({'visibility' : 'visible'});
		}
		
		/**
		 * Stop the code execution from a escified time in milisecond
		 *
		 */
		function ___pause(ms) {
			var date = new Date();
			curDate = null;
			do {var curDate = new Date();}
			while ( curDate - date < ms);
		};
		// Return the jQuery object for chaining. The unbind method is used to avoid click conflict when the plugin is called more than once
		return this.unbind('click').click(_initialize);
	};
})(jQuery); // Call and execute the function immediately passing the jQuery object
