egroupware/api/js/etemplate/expose.js
2016-03-19 13:48:07 +00:00

608 lines
21 KiB
JavaScript
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/**
* 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 <hn[at]stylite.de>
* @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)
{
"use strict";
// 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\/(mp4|ogg|webm))|(image\/:*(?!tif|x-xcf|pdf))/);
// IE only supports video/mp4 mime type
if (navigator.userAgent.match(/(MSIE|Trident)/)) mime_regex.compile(/(video\/mp4)|(image\/:*(?!tif|x-xcf|pdf))/);
// 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
// At the moment only filemanger nm would work
// as gallery, thus we disable other nestmatches
// to build up gallery but filemanager
if(nextmatch == null || nextmatch.controller == null || !nextmatch.dom_id.match(/filemanager/,'ig')) 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;
}
// Remove the loading class if the slide is loaded
else
{
$j(gallery.slides[index]).removeClass(gallery.options.slideLoadingClass);
}
// 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);
this.mime_regexp = mime_regex;
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: '',
// 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: false,
// 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,
//Request fullscreen on slide show
toggleFullscreenOnSlideShow: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('<div class="slides"></div><h3 class="title"></h3><a class="prev"></a><a class="next"></a><a title="'+ egw().lang('Close') + '" class="close">×</a><a title="'+ egw().lang('Play/Pause') + '" class="play-pause"></a><a title="'+ egw().lang('Fullscreen') + '" class="fullscreen"></a><a title="'+ egw().lang('Save') +'" class="download"></a><ol class="indicator"></ol>');
// Append the gallery Node to DOM
$body.append($expose_node);
}
},
set_value:function (_value)
{
if (typeof this._super == 'undefined') return;
this._super.apply(this,arguments);
// 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;
}
var self=this;
// If the media type is not supported do not bind the click handler
if (!_value || typeof _value.mime != 'string' || !_value.mime.match(mime_regex,'ig') || typeof _value.download_url == 'undefined')
{
return;
}
if (typeof this.options.expose_view != 'undefined' && this.options.expose_view )
{
jQuery(this.node).on('click', function(event){
// Do not trigger expose view if one of the operator keys are held
if (!event.altKey && !event.ctrlKey && !event.shiftKey && !event.metaKey) self._init_blueimp_gallery(event, _value);
event.stopImmediatePropagation();
}).addClass('et2_clickable');
}
},
_init_blueimp_gallery: function (event, _value)
{
var mediaContent = [];
var nm = find_nextmatch(this);
var current_index = 0;
if(nm && !this._is_target_indepth(nm,event.target))
{
// 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);
// Do not show thumbnail indicator on single expose view
this.expose_options.thumbnailIndicators = false;
}
this.expose_options.index = current_index;
gallery = blueimp.Gallery(mediaContent, this.expose_options);
},
/**
* Check if clicked target from nm is in depth
*
* @param nm nextmatch widget
* @param target selected target dom node
*
* @return {boolean} returns false if target is not in depth otherwise True
*/
_is_target_indepth: function (nm, target){
var res = false;
if (nm)
{
if (!target)
{
var target = this.getDOMNode();
}
var entry = nm.controller.getRowByNode(target);
if (entry && entry.controller.getDepth()>0)
{
res = true;
}
}
return res;
},
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)
{
var $indicator = gallery.container.find('.indicator');
$indicator.off()
.addClass('paginating')
.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');
});
// Bind the mousewheel handler for FF (DOMMousewheel), and other browsers (mousewheel)
$indicator.bind('mousewheel DOMMousewheel',function(event, _delta) {
var delta = _delta || event.originalEvent.wheelDelta / 120;
if(delta > 0 && parseInt($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();
});
}
}
},
/**
* Trigger on slide left/right
* @param {Gallery} gallery
* @param {integer} index
* @param {DOMNode} slide
*/
expose_onslide: function (gallery, index, slide){
if (typeof this._super == 'undefined') return;
// 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)
{
indicator.animate({left: (gallery.container.width() / 2)-current.left},10);
}
}
},
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 && !this._is_target_indepth(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){}
});
}