forked from extern/egroupware
564 lines
19 KiB
JavaScript
564 lines
19 KiB
JavaScript
/**
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* EGroupware eTemplate2 - JS object implementing expose view of media and a gallery view
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*
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package etemplate
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* @subpackage api
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* @link http://www.egroupware.org
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* @author Hadi Nategh <hn[at]stylite.de>
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* @copyright Stylite AG
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* @version $Id$
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*/
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/*egw:uses
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jquery.jquery;
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/phpgwapi/js/jquery/blueimp/js/blueimp-gallery.min.js;
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*/
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/**
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* Interface all exposed widget must support in order to getMedia for the blueimp Gallery.
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*/
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var et2_IExposable = new Interface(
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{
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/**
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* get media an array of media objects to pass to blueimp Gallery
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* @param {array} _attrs
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*/
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getMedia: function(_attrs) {}
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});
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/**
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* This function extends the given widget with blueimp gallery plugin
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*
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* @param {type} widget
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* @returns {widget}
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*/
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function expose (widget)
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{
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// Common expose functions
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var THUMBNAIL_MAX = 100;
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// Minimum data to qualify as an image and not cause errors
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var IMAGE_DEFAULT = {
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title: egw.lang('loading'),
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href: '',
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type: 'image/png',
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thumbnail: '',
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loading: true
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};
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// For filtering to only show things we can handle
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var mime_regex = new RegExp(/video\/|image\/|audio\//);
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// Only one gallery
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var gallery = null;
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/**
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* See if the current widget is in a nextmatch, as this allows us to display
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* thumbnails underneath
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*
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* @param {et2_IExposable} widget
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* @returns {et2_nextmatch | null}
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*/
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var find_nextmatch = function(widget)
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{
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var current = widget;
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var nextmatch = null;
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while(nextmatch == null && current)
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{
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current = current.getParent();
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if(typeof current !='undefined' && current.instanceOf(et2_nextmatch))
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{
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nextmatch = current;
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}
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}
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// No nextmatch, or nextmatch not quite ready
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if(nextmatch == null || nextmatch.controller == null) return null;
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return nextmatch;
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};
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/**
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* Read images out of the data for the nextmatch
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*
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* @param {et2_nextmatch} nm
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* @param {Object[]} images
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* @param {number} start_at
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* @returns {undefined}
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*/
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var read_from_nextmatch = function(nm, images, start_at)
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{
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if(!start_at) start_at = 0;
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var image_index = start_at;
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var stop = Math.max.apply(null,Object.keys(nm.controller._indexMap));
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for(var i = start_at; i <= stop; i++)
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{
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if(!nm.controller._indexMap[i] || !nm.controller._indexMap[i].uid)
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{
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// Returning instead of using IMAGE_DEFAULT means we stop as
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// soon as a hole is found, instead of getting everything that is
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// available. The gallery can't fill in the holes.
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images[image_index++] = IMAGE_DEFAULT;
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continue;
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}
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var uid = nm.controller._indexMap[i].uid;
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if(!uid) continue;
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var data = egw.dataGetUIDdata(uid);
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if(data && data.data && data.data.mime && mime_regex.test(data.data.mime))
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{
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var media = this.getMedia(data.data);
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images[image_index++] = jQuery.extend({}, data.data, media[0]);
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}
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}
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};
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/**
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* Set a particular index/image in the gallery instead of just appending
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* it to the end
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*
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* @param {integer} index
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* @param {Object} image
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* @returns {undefined}
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*/
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var set_slide = function(index, image)
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{
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var active = (index == gallery.index);
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// Pad with blanks until length is right
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while(index > gallery.getNumber())
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{
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gallery.add([jQuery.extend({}, IMAGE_DEFAULT)]);
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}
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// Don't bother with adding a default, we just did that
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if(image.loading)
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{
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//Add load class if it's really a slide with error
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if (gallery.slidesContainer.find('[data-index="'+index+'"]').hasClass(gallery.options.slideErrorClass))
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$j(gallery.slides[index])
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.addClass(gallery.options.slideLoadingClass)
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.removeClass(gallery.options.slideErrorClass);
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return;
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}
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// Just use add to let gallery create everything it needs
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var new_index = gallery.num;
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gallery.add([image]);
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// Move it to where we want it.
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// Gallery uses arrays and indexes and has several internal variables
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// that need to be updated.
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//
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// list
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gallery.list[index] = gallery.list[new_index];
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gallery.list.splice(new_index,1);
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// indicators & slides
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var dom_nodes = ['indicators','slides'];
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for(var i in dom_nodes)
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{
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var var_name = dom_nodes[i];
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// Remove old one from DOM
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$j(gallery[var_name][index]).remove();
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// Move new one into it's place in gallery
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gallery[var_name][index] = gallery[var_name][new_index];
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// Move into place in DOM
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var node = $j(gallery[var_name][index]);
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node.attr('data-index', index)
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.insertAfter($j("[data-index='"+(index-1)+"']",node.parent()));
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if(active) node.addClass(gallery.options.activeIndicatorClass);
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gallery[var_name].splice(new_index,1);
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}
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if(active)
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{
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gallery.activeIndicator = $j(gallery.indicators[index]);
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}
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// positions
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gallery.positions[index] = active ? 0 : (index > gallery.index ? gallery.slideWidth : -gallery.slideWidth);
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gallery.positions.splice(new_index,1);
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// elements - removing will allow to re-do the slide
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if(gallery.elements[index])
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{
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delete gallery.elements[index];
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gallery.loadElement(index);
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}
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// Remove the one we just added
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gallery.num -= 1;
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};
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return widget.extend([et2_IExposable],{
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/**
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* Initialize the expose media gallery
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*/
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init: function()
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{
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this._super.apply(this, arguments);
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var self=this;
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this.expose_options = {
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// The Id, element or querySelector of the gallery widget:
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container: '#blueimp-gallery',
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// The tag name, Id, element or querySelector of the slides container:
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slidesContainer: 'div',
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// The tag name, Id, element or querySelector of the title element:
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titleElement: 'h3',
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// The class to add when the gallery is visible:
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displayClass: 'blueimp-gallery-display',
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// The class to add when the gallery controls are visible:
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controlsClass: 'blueimp-gallery-controls',
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// The class to add when the gallery only displays one element:
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singleClass: 'blueimp-gallery-single',
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// The class to add when the left edge has been reached:
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leftEdgeClass: 'blueimp-gallery-left',
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// The class to add when the right edge has been reached:
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rightEdgeClass: 'blueimp-gallery-right',
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// The class to add when the automatic slideshow is active:
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playingClass: 'blueimp-gallery-playing',
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// The class for all slides:
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slideClass: 'slide',
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// The slide class for loading elements:
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slideLoadingClass: 'slide-loading',
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// The slide class for elements that failed to load:
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slideErrorClass: 'slide-error',
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// The class for the content element loaded into each slide:
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slideContentClass: 'slide-content',
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// The class for the "toggle" control:
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toggleClass: 'toggle',
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// The class for the "prev" control:
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prevClass: 'prev',
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// The class for the "next" control:
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nextClass: 'next',
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// The class for the "close" control:
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closeClass: 'close',
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// The class for the "play-pause" toggle control:
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playPauseClass: 'play-pause',
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// The class to add for fullscreen button option
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fullscreenClass:'fullscreen',
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// The list object property (or data attribute) with the object type:
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typeProperty: 'type',
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// The list object property (or data attribute) with the object title:
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titleProperty: 'title',
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// The list object property (or data attribute) with the object URL:
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urlProperty: 'href',
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// The gallery listens for transitionend events before triggering the
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// opened and closed events, unless the following option is set to false:
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displayTransition: true,
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// Defines if the gallery slides are cleared from the gallery modal,
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// or reused for the next gallery initialization:
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clearSlides: true,
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// Defines if images should be stretched to fill the available space,
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// while maintaining their aspect ratio (will only be enabled for browsers
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// supporting background-size="contain", which excludes IE < 9).
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// Set to "cover", to make images cover all available space (requires
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// support for background-size="cover", which excludes IE < 9):
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stretchImages: true,
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// Toggle the controls on pressing the Return key:
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toggleControlsOnReturn: true,
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// Toggle the automatic slideshow interval on pressing the Space key:
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toggleSlideshowOnSpace: true,
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// Navigate the gallery by pressing left and right on the keyboard:
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enableKeyboardNavigation: true,
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// Close the gallery on pressing the ESC key:
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closeOnEscape: true,
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// Close the gallery when clicking on an empty slide area:
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closeOnSlideClick: true,
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// Close the gallery by swiping up or down:
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closeOnSwipeUpOrDown: true,
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// Emulate touch events on mouse-pointer devices such as desktop browsers:
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emulateTouchEvents: true,
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// Stop touch events from bubbling up to ancestor elements of the Gallery:
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stopTouchEventsPropagation: false,
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// Hide the page scrollbars:
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hidePageScrollbars: true,
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// Stops any touches on the container from scrolling the page:
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disableScroll: true,
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// Carousel mode (shortcut for carousel specific options):
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carousel: true,
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// Allow continuous navigation, moving from last to first
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// and from first to last slide:
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continuous: false,
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// Remove elements outside of the preload range from the DOM:
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unloadElements: true,
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// Start with the automatic slideshow:
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startSlideshow: false,
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// Delay in milliseconds between slides for the automatic slideshow:
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slideshowInterval: 3000,
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// The starting index as integer.
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// Can also be an object of the given list,
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// or an equal object with the same url property:
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index: 0,
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// The number of elements to load around the current index:
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preloadRange: 2,
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// The transition speed between slide changes in milliseconds:
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transitionSpeed: 400,
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//Hide controls when the slideshow is playing
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hideControlsOnSlideshow: true,
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// The transition speed for automatic slide changes, set to an integer
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// greater 0 to override the default transition speed:
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slideshowTransitionSpeed: undefined,
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// The tag name, Id, element or querySelector of the indicator container:
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indicatorContainer: 'ol',
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// The class for the active indicator:
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activeIndicatorClass: 'active',
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// The list object property (or data attribute) with the thumbnail URL,
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// used as alternative to a thumbnail child element:
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thumbnailProperty: 'thumbnail',
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// Defines if the gallery indicators should display a thumbnail:
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thumbnailIndicators: true,
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//thumbnail with image tag
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thumbnailWithImgTag: true,
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// Callback function executed when the Gallery is initialized.
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// Is called with the gallery instance as "this" object:
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onopen: jQuery.proxy(this.expose_onopen,this),
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// Callback function executed when the Gallery has been initialized
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// and the initialization transition has been completed.
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// Is called with the gallery instance as "this" object:
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onopened: jQuery.proxy(this.expose_onopened,this),
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// Callback function executed on slide change.
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// Is called with the gallery instance as "this" object and the
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// current index and slide as arguments:
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onslide: function(index, slide) {
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// Call our onslide method, and include gallery as an attribute
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self.expose_onslide.apply(self, [this, index,slide]);
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},
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// Callback function executed after the slide change transition.
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// Is called with the gallery instance as "this" object and the
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// current index and slide as arguments:
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onslideend: function(index, slide) {
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// Call our onslide method, and include gallery as an attribute
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self.expose_onslideend.apply(self, [this, index,slide]);
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},
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//// Callback function executed on slide content load.
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// Is called with the gallery instance as "this" object and the
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// slide index and slide element as arguments:
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onslidecomplete: function(index, slide) {
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// Call our onslide method, and include gallery as an attribute
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self.expose_onslidecomplete.apply(self, [this, index,slide]);
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},
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//// Callback function executed when the Gallery is about to be closed.
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// Is called with the gallery instance as "this" object:
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onclose:jQuery.proxy(this.expose_onclose,this),
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// Callback function executed when the Gallery has been closed
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// and the closing transition has been completed.
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// Is called with the gallery instance as "this" object:
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onclosed: jQuery.proxy(this.expose_onclosed,this)
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};
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var $body = jQuery('body');
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if ($body.find('#blueimp-gallery').length == 0)
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{
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// Gallery Main DIV container
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var $expose_node = jQuery(document.createElement('div')).attr({id:"blueimp-gallery", class:"blueimp-gallery"});
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// Create Gallery DOM NODE
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$expose_node.append('<div class="slides"></div><h3 class="title"></h3><a class="prev">‹</a><a class="next">›</a><a class="close">×</a><a class="play-pause"></a><a class="fullscreen"></a><ol class="indicator"></ol>');
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// Append the gallery Node to DOM
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$body.append($expose_node);
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}
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},
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set_value:function (_value)
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{
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// Do not run set value of expose if expose_view is not set
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// it causes a wired error on nested image widgets which
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// seems the expose is not its child widget
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if (!this.options.expose_view )
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{
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return;
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}
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this._super.apply(this,arguments);
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var self=this;
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// If the media type is not supported do not bind the click handler
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if (_value && typeof _value.mime != 'undefined' && !_value.mime.match(mime_regex,'ig'))
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{
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return;
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}
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if (typeof this.options.expose_view != 'undefined' && this.options.expose_view )
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{
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jQuery(this.node).on('click', function(event){
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self._init_blueimp_gallery(event, _value);
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}).addClass('et2_clickable');
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}
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},
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_init_blueimp_gallery: function (event, _value)
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{
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var mediaContent = [];
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var nm = find_nextmatch(this);
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var current_index = 0;
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if(nm)
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{
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// Get the row that was clicked, find its index in the list
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var current_entry = nm.controller.getRowByNode(event.target);
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// But before it goes, we'll pull everything we can
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read_from_nextmatch.call(this, nm, mediaContent);
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// find current_entry in array and set it's array-index
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for(var i=0; i < mediaContent.length; i++)
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{
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if ('filemanager::'+mediaContent[i].path == current_entry.uid)
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{
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current_index = i;
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break;
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}
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}
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// This will trigger nm to refresh and get just the ones we can handle
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// but it might take a while, so do it later - make sure our current
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// one is loaded first.
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window.setTimeout(function() {
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nm.applyFilters({col_filter: {mime: '/'+mime_regex.source+'/'}});
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},1);
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}
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else
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{
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mediaContent = this.getMedia(_value);
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}
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this.expose_options.index = current_index;
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gallery = blueimp.Gallery(mediaContent, this.expose_options);
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},
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expose_onopen: function (event){},
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expose_onopened: function (event){
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// Check to see if we're in a nextmatch, do magic
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var nm = find_nextmatch(this);
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var self=this;
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if(nm)
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{
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// Add scrolling to the indicator list
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var total_count = nm.controller._grid.getTotalCount();
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if(total_count >= gallery.num)
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{
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gallery.container.find('.indicator').off()
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.addClass('paginating')
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.mousewheel(function(event, delta) {
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if(delta > 0 && parseInt($j(this).css('left')) > gallery.container.width() / 2) return;
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//Reload next pictures into the gallery by scrolling on thumbnails
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if (delta<0 && $j(this).width() + parseInt($j(this).css('left')) < gallery.container.width())
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{
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var nextIndex = gallery.indicatorContainer.find('[title="loading"]')[0];
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if (nextIndex) self.expose_onslideend(gallery,nextIndex.dataset.index -1);
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return;
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}
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// Move it about 5 indicators
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$j(this).css('left',parseInt($j(this).css('left'))-(-delta*gallery.activeIndicator.width()*5)+'px');
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event.preventDefault();
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})
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.swipe(function(event, direction, distance) {
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if(direction == jQuery.fn.swipe.directions.LEFT)
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{
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distance *= -1;
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}
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else if(direction == jQuery.fn.swipe.directions.RIGHT)
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{
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// OK.
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}
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else
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{
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return;
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}
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$j(this).css('left',min(0,parseInt($j(this).css('left'))-(distance*30))+'px');
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});
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}
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}
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},
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/**
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* Trigger on slide left/right
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* @param {Gallery} gallery
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* @param {integer} index
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* @param {DOMNode} slide
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*/
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expose_onslide: function (gallery, index, slide){
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// First let parent try
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this._super.apply(this, arguments);
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var nm = find_nextmatch(this);
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if(nm)
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{
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// See if we need to move the indicator
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var indicator = gallery.container.find('.indicator');
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var current = $j('.active',indicator).position();
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if (current.left == 0)
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{
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//As controlsClass activates indicators,
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//we use it to make indicators available for the first time
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//which helps to re-calculate the correct position of it, if it's not loaded yet
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gallery.container.addClass(this.expose_options.controlsClass);
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current = $j('.active',indicator).position();
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}
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if(current)
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{
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indicator.animate({left: (gallery.container.width() / 2)-current.left});
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}
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}
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},
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expose_onslideend: function (gallery, index, slide){
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||
// 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){}
|
||
|
||
});
|
||
}
|