/** * EGroupware eTemplate2 - JS object implementing expose view of media and a gallery view * * @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License * @package etemplate * @subpackage api * @link http://www.egroupware.org * @author Hadi Nategh * @copyright Stylite AG * @version $Id$ */ /*egw:uses jquery.jquery; /phpgwapi/js/jquery/blueimp/js/blueimp-gallery.min.js; */ /** * Interface all exposed widget must support in order to getMedia for the blueimp Gallery. */ var et2_IExposable = new Interface( { /** * get media an array of media objects to pass to blueimp Gallery * @param {array} _attrs */ getMedia: function(_attrs) {} }); /** * This function extends the given widget with blueimp gallery plugin * * @param {type} widget * @returns {widget} */ function expose (widget) { // Common expose functions var THUMBNAIL_MAX = 100; // Minimum data to qualify as an image and not cause errors var IMAGE_DEFAULT = { title: egw.lang('loading'), href: '', type: 'image/png', thumbnail: '', loading: true }; // For filtering to only show things we can handle var mime_regex = new RegExp(/video\/|image\/|audio\//); // Only one gallery var gallery = null; /** * See if the current widget is in a nextmatch, as this allows us to display * thumbnails underneath * * @param {et2_IExposable} widget * @returns {et2_nextmatch | null} */ var find_nextmatch = function(widget) { var current = widget; var nextmatch = null; while(nextmatch == null && current) { current = current.getParent(); if(typeof current !='undefined' && current.instanceOf(et2_nextmatch)) { nextmatch = current; } } // No nextmatch, or nextmatch not quite ready if(nextmatch == null || nextmatch.controller == null) return null; return nextmatch; }; /** * Read images out of the data for the nextmatch * * @param {et2_nextmatch} nm * @param {Object[]} images * @param {number} start_at * @returns {undefined} */ var read_from_nextmatch = function(nm, images, start_at) { if(!start_at) start_at = 0; var image_index = start_at; var stop = Math.max.apply(null,Object.keys(nm.controller._indexMap)); for(var i = start_at; i <= stop; i++) { if(!nm.controller._indexMap[i] || !nm.controller._indexMap[i].uid) { // Returning instead of using IMAGE_DEFAULT means we stop as // soon as a hole is found, instead of getting everything that is // available. The gallery can't fill in the holes. images[image_index++] = IMAGE_DEFAULT; continue; } var uid = nm.controller._indexMap[i].uid; if(!uid) continue; var data = egw.dataGetUIDdata(uid); if(data && data.data && data.data.mime && mime_regex.test(data.data.mime)) { var media = this.getMedia(data.data); images[image_index++] = jQuery.extend({}, data.data, media[0]); } } }; /** * Set a particular index/image in the gallery instead of just appending * it to the end * * @param {integer} index * @param {Object} image * @returns {undefined} */ var set_slide = function(index, image) { var active = (index == gallery.index); // Pad with blanks until length is right while(index > gallery.getNumber()) { gallery.add([jQuery.extend({}, IMAGE_DEFAULT)]); } // Don't bother with adding a default, we just did that if(image.loading) { //Add load class if it's really a slide with error if (gallery.slidesContainer.find('[data-index="'+index+'"]').hasClass(gallery.options.slideErrorClass)) $j(gallery.slides[index]) .addClass(gallery.options.slideLoadingClass) .removeClass(gallery.options.slideErrorClass); return; } // Just use add to let gallery create everything it needs var new_index = gallery.num; gallery.add([image]); // Move it to where we want it. // Gallery uses arrays and indexes and has several internal variables // that need to be updated. // // list gallery.list[index] = gallery.list[new_index]; gallery.list.splice(new_index,1); // indicators & slides var dom_nodes = ['indicators','slides']; for(var i in dom_nodes) { var var_name = dom_nodes[i]; // Remove old one from DOM $j(gallery[var_name][index]).remove(); // Move new one into it's place in gallery gallery[var_name][index] = gallery[var_name][new_index]; // Move into place in DOM var node = $j(gallery[var_name][index]); node.attr('data-index', index) .insertAfter($j("[data-index='"+(index-1)+"']",node.parent())); if(active) node.addClass(gallery.options.activeIndicatorClass); gallery[var_name].splice(new_index,1); } if(active) { gallery.activeIndicator = $j(gallery.indicators[index]); } // positions gallery.positions[index] = active ? 0 : (index > gallery.index ? gallery.slideWidth : -gallery.slideWidth); gallery.positions.splice(new_index,1); // elements - removing will allow to re-do the slide if(gallery.elements[index]) { delete gallery.elements[index]; gallery.loadElement(index); } // Remove the one we just added gallery.num -= 1; }; return widget.extend([et2_IExposable],{ /** * Initialize the expose media gallery */ init: function() { this._super.apply(this, arguments); var self=this; this.expose_options = { // The Id, element or querySelector of the gallery widget: container: '#blueimp-gallery', // The tag name, Id, element or querySelector of the slides container: slidesContainer: 'div', // The tag name, Id, element or querySelector of the title element: titleElement: 'h3', // The class to add when the gallery is visible: displayClass: 'blueimp-gallery-display', // The class to add when the gallery controls are visible: controlsClass: 'blueimp-gallery-controls', // The class to add when the gallery only displays one element: singleClass: 'blueimp-gallery-single', // The class to add when the left edge has been reached: leftEdgeClass: 'blueimp-gallery-left', // The class to add when the right edge has been reached: rightEdgeClass: 'blueimp-gallery-right', // The class to add when the automatic slideshow is active: playingClass: 'blueimp-gallery-playing', // The class for all slides: slideClass: 'slide', // The slide class for loading elements: slideLoadingClass: 'slide-loading', // The slide class for elements that failed to load: slideErrorClass: 'slide-error', // The class for the content element loaded into each slide: slideContentClass: 'slide-content', // The class for the "toggle" control: toggleClass: 'toggle', // The class for the "prev" control: prevClass: 'prev', // The class for the "next" control: nextClass: 'next', // The class for the "close" control: closeClass: 'close', // The class for the "play-pause" toggle control: playPauseClass: 'play-pause', // The class to add for fullscreen button option fullscreenClass:'fullscreen', // The list object property (or data attribute) with the object type: typeProperty: 'type', // The list object property (or data attribute) with the object title: titleProperty: 'title', // The list object property (or data attribute) with the object URL: urlProperty: 'href', // The gallery listens for transitionend events before triggering the // opened and closed events, unless the following option is set to false: displayTransition: true, // Defines if the gallery slides are cleared from the gallery modal, // or reused for the next gallery initialization: clearSlides: true, // Defines if images should be stretched to fill the available space, // while maintaining their aspect ratio (will only be enabled for browsers // supporting background-size="contain", which excludes IE < 9). // Set to "cover", to make images cover all available space (requires // support for background-size="cover", which excludes IE < 9): stretchImages: true, // Toggle the controls on pressing the Return key: toggleControlsOnReturn: true, // Toggle the automatic slideshow interval on pressing the Space key: toggleSlideshowOnSpace: true, // Navigate the gallery by pressing left and right on the keyboard: enableKeyboardNavigation: true, // Close the gallery on pressing the ESC key: closeOnEscape: true, // Close the gallery when clicking on an empty slide area: closeOnSlideClick: true, // Close the gallery by swiping up or down: closeOnSwipeUpOrDown: true, // Emulate touch events on mouse-pointer devices such as desktop browsers: emulateTouchEvents: true, // Stop touch events from bubbling up to ancestor elements of the Gallery: stopTouchEventsPropagation: false, // Hide the page scrollbars: hidePageScrollbars: true, // Stops any touches on the container from scrolling the page: disableScroll: true, // Carousel mode (shortcut for carousel specific options): carousel: true, // Allow continuous navigation, moving from last to first // and from first to last slide: continuous: false, // Remove elements outside of the preload range from the DOM: unloadElements: true, // Start with the automatic slideshow: startSlideshow: false, // Delay in milliseconds between slides for the automatic slideshow: slideshowInterval: 3000, // The starting index as integer. // Can also be an object of the given list, // or an equal object with the same url property: index: 0, // The number of elements to load around the current index: preloadRange: 2, // The transition speed between slide changes in milliseconds: transitionSpeed: 400, //Hide controls when the slideshow is playing hideControlsOnSlideshow: true, // The transition speed for automatic slide changes, set to an integer // greater 0 to override the default transition speed: slideshowTransitionSpeed: undefined, // The tag name, Id, element or querySelector of the indicator container: indicatorContainer: 'ol', // The class for the active indicator: activeIndicatorClass: 'active', // The list object property (or data attribute) with the thumbnail URL, // used as alternative to a thumbnail child element: thumbnailProperty: 'thumbnail', // Defines if the gallery indicators should display a thumbnail: thumbnailIndicators: true, //thumbnail with image tag thumbnailWithImgTag: true, // Callback function executed when the Gallery is initialized. // Is called with the gallery instance as "this" object: onopen: jQuery.proxy(this.expose_onopen,this), // Callback function executed when the Gallery has been initialized // and the initialization transition has been completed. // Is called with the gallery instance as "this" object: onopened: jQuery.proxy(this.expose_onopened,this), // Callback function executed on slide change. // Is called with the gallery instance as "this" object and the // current index and slide as arguments: onslide: function(index, slide) { // Call our onslide method, and include gallery as an attribute self.expose_onslide.apply(self, [this, index,slide]); }, // Callback function executed after the slide change transition. // Is called with the gallery instance as "this" object and the // current index and slide as arguments: onslideend: function(index, slide) { // Call our onslide method, and include gallery as an attribute self.expose_onslideend.apply(self, [this, index,slide]); }, //// Callback function executed on slide content load. // Is called with the gallery instance as "this" object and the // slide index and slide element as arguments: onslidecomplete: function(index, slide) { // Call our onslide method, and include gallery as an attribute self.expose_onslidecomplete.apply(self, [this, index,slide]); }, //// Callback function executed when the Gallery is about to be closed. // Is called with the gallery instance as "this" object: onclose:jQuery.proxy(this.expose_onclose,this), // Callback function executed when the Gallery has been closed // and the closing transition has been completed. // Is called with the gallery instance as "this" object: onclosed: jQuery.proxy(this.expose_onclosed,this) }; var $body = jQuery('body'); if ($body.find('#blueimp-gallery').length == 0) { // Gallery Main DIV container var $expose_node = jQuery(document.createElement('div')).attr({id:"blueimp-gallery", class:"blueimp-gallery"}); // Create Gallery DOM NODE $expose_node.append('

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    '); // Append the gallery Node to DOM $body.append($expose_node); } }, set_value:function (_value) { // Do not run set value of expose if expose_view is not set // it causes a wired error on nested image widgets which // seems the expose is not its child widget if (!this.options.expose_view ) { return; } this._super.apply(this,arguments); var self=this; // If the media type is not supported do not bind the click handler if (_value && typeof _value.mime != 'undefined' && !_value.mime.match(mime_regex,'ig')) { return; } if (typeof this.options.expose_view != 'undefined' && this.options.expose_view ) { jQuery(this.node).on('click', function(event){ self._init_blueimp_gallery(event, _value); }).addClass('et2_clickable'); } }, _init_blueimp_gallery: function (event, _value) { var mediaContent = []; var nm = find_nextmatch(this); var current_index = 0; if(nm) { // Get the row that was clicked, find its index in the list var current_entry = nm.controller.getRowByNode(event.target); // But before it goes, we'll pull everything we can read_from_nextmatch.call(this, nm, mediaContent); // find current_entry in array and set it's array-index for(var i=0; i < mediaContent.length; i++) { if ('filemanager::'+mediaContent[i].path == current_entry.uid) { current_index = i; break; } } // This will trigger nm to refresh and get just the ones we can handle // but it might take a while, so do it later - make sure our current // one is loaded first. window.setTimeout(function() { nm.applyFilters({col_filter: {mime: '/'+mime_regex.source+'/'}}); },1); } else { mediaContent = this.getMedia(_value); } this.expose_options.index = current_index; gallery = blueimp.Gallery(mediaContent, this.expose_options); }, expose_onopen: function (event){}, expose_onopened: function (event){ // Check to see if we're in a nextmatch, do magic var nm = find_nextmatch(this); var self=this; if(nm) { // Add scrolling to the indicator list var total_count = nm.controller._grid.getTotalCount(); if(total_count >= gallery.num) { gallery.container.find('.indicator').off() .addClass('paginating') .mousewheel(function(event, delta) { if(delta > 0 && parseInt($j(this).css('left')) > gallery.container.width() / 2) return; //Reload next pictures into the gallery by scrolling on thumbnails if (delta<0 && $j(this).width() + parseInt($j(this).css('left')) < gallery.container.width()) { var nextIndex = gallery.indicatorContainer.find('[title="loading"]')[0]; if (nextIndex) self.expose_onslideend(gallery,nextIndex.dataset.index -1); return; } // Move it about 5 indicators $j(this).css('left',parseInt($j(this).css('left'))-(-delta*gallery.activeIndicator.width()*5)+'px'); event.preventDefault(); }) .swipe(function(event, direction, distance) { if(direction == jQuery.fn.swipe.directions.LEFT) { distance *= -1; } else if(direction == jQuery.fn.swipe.directions.RIGHT) { // OK. } else { return; } $j(this).css('left',min(0,parseInt($j(this).css('left'))-(distance*30))+'px'); }); } } }, /** * Trigger on slide left/right * @param {Gallery} gallery * @param {integer} index * @param {DOMNode} slide */ expose_onslide: function (gallery, index, slide){ // First let parent try this._super.apply(this, arguments); var nm = find_nextmatch(this); if(nm) { // See if we need to move the indicator var indicator = gallery.container.find('.indicator'); var current = $j('.active',indicator).position(); if (current.left == 0 && !gallery.container.hasClass(this.expose_options.playingClass)) { //As controlsClass activates indicators, //we use it to make indicators available for the first time //which helps to re-calculate the correct position of it, if it's not loaded yet gallery.container.addClass(this.expose_options.controlsClass); current = $j('.active',indicator).position(); } if(current) { indicator.animate({left: (gallery.container.width() / 2)-current.left}); } } }, expose_onslideend: function (gallery, index, slide){ // Check to see if we're in a nextmatch, do magic var nm = find_nextmatch(this); if(nm) { // Check to see if we're near the end, or maybe some pagination // would be good. var total_count = nm.controller._grid.getTotalCount(); // Already at the end, don't bother if(index == total_count -1 || index == 0) return; // Try to determine direction from state of next & previous slides var direction = 1; for(var i in gallery.elements) { // Loading or error if(gallery.elements[i] == 1 || gallery.elements[i] == 3 || gallery.list[i].loading) { direction = i >= index ? 1 : -1; break; } } if(!gallery.list[index+direction] || gallery.list[index+direction].loading || total_count > gallery.getNumber() && index + ET2_DATAVIEW_STEPSIZE > gallery.getNumber()) { // This will get the next batch of rows var start = Math.max(0, direction > 0 ? index : index - ET2_DATAVIEW_STEPSIZE); var end = Math.min(total_count - 1, start + ET2_DATAVIEW_STEPSIZE); nm.controller._gridCallback(start, end); var images = []; read_from_nextmatch.call(this, nm, images, start); // Gallery always adds to the end, causing problems with pagination for(var i in images) { //if(i == index || i < gallery.num) continue; set_slide(i, images[i]); //gallery.add([images[i]]); } } } }, expose_onslidecomplete:function (gallery, index, slide){}, expose_onclose: function(event){ // Check to see if we're in a nextmatch, remove magic var nm = find_nextmatch(this); if(nm) { // Remove scrolling from thumbnails gallery.container.find('.indicator') .removeClass('paginating') .off('mousewheel') .off('swipe'); // Remove applied mime filter nm.applyFilters({col_filter: {mime: ''}}); } }, expose_onclosed: function (event){} }); }