forked from extern/egroupware
437 lines
15 KiB
JavaScript
437 lines
15 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/jquery.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\//);
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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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* @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 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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return;
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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.push(jQuery.extend({}, data.data, media[0]));
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}
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}
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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 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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// 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><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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current_index = current_entry.idx || 0;
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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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// 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 = Math.min(current_index, mediaContent.length-1);
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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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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($j(this).css('left')) > gallery.container.width() / 2) return;
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// Move it about 10 indicators
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$j(this).css('left',parseInt($j(this).css('left'))-(-delta*150)+'px');
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event.preventDefault();
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})
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.swipe(function(event, direction, distance) {
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if(direction == jQuery.fn.swipe.directions.LEFT)
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{
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distance *= -1;
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}
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else if(direction == jQuery.fn.swipe.directions.RIGHT)
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{
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// OK.
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}
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else
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{
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return;
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}
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$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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// Check to see if we're in a nextmatch, do magic
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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)
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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
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var nm = find_nextmatch(this);
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if(nm)
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{
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// Check to see if we're near the end, or maybe some pagination
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// would be good.
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var total_count = nm.controller._grid.getTotalCount();
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if(!gallery.list[index+1] || gallery.list[index+1].loading ||
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total_count > gallery.getNumber() && index + ET2_DATAVIEW_STEPSIZE > gallery.getNumber())
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{
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// Well, this will get the next batch of rows
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nm.controller._gridCallback(index, index + ET2_DATAVIEW_STEPSIZE);
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var images = [];
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read_from_nextmatch.call(this, nm, images, index);
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// Gallery always adds to the end, causing problems with pagination
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for(var i in images)
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{
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if(i == index || i < gallery.num) continue;
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gallery.add([images[i]]);
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}
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}
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}
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},
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expose_onslidecomplete:function (gallery, index, slide){},
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expose_onclose: function(event){
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// Check to see if we're in a nextmatch, remove magic
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var nm = find_nextmatch(this);
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if(nm)
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{
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// Remove scrolling from thumbnails
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gallery.container.find('.indicator')
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.removeClass('paginating')
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.off('mousewheel')
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.off('swipe');
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// Remove applied mime filter
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nm.applyFilters({col_filter: {mime: ''}});
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}
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},
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expose_onclosed: function (event){}
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});
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}
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