/
html.sortable.js
139 lines (123 loc) · 5.19 KB
/
html.sortable.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
/*
* HTML5 Sortable jQuery Plugin
* https://github.com/voidberg/html5sortable
*
* Original code copyright 2012 Ali Farhadi.
* This version is mantained by Alexandru Badiu <andu@ctrlz.ro>
*
* Thanks to the following contributors: andyburke, bistoco, daemianmack, drskullster, flying-sheep, OscarGodson, Parikshit N. Samant, rodolfospalenza, ssafejava
*
* Released under the MIT license.
*/
'use strict';
(function ($) {
var dragging, draggingHeight, placeholders = $();
$.fn.sortable = function (options) {
var method = String(options);
options = $.extend({
connectWith: false,
placeholder: null,
dragImage: null
}, options);
return this.each(function () {
var index, items = $(this).children(options.items), handles = options.handle ? items.find(options.handle) : items;
if (method === 'reload') {
$(this).children(options.items).off('dragstart.h5s dragend.h5s selectstart.h5s dragover.h5s dragenter.h5s drop.h5s');
}
if (/^enable|disable|destroy$/.test(method)) {
var citems = $(this).children($(this).data('items')).attr('draggable', method === 'enable');
if (method === 'destroy') {
$(this).off('sortupdate');
$(this).removeData('opts');
citems.add(this).removeData('connectWith items')
.off('dragstart.h5s dragend.h5s dragover.h5s dragenter.h5s drop.h5s').off('sortupdate');
handles.off('selectstart.h5s');
}
return;
}
var soptions = $(this).data('opts');
if (typeof soptions === 'undefined') {
$(this).data('opts', options);
}
else {
options = soptions;
}
var startParent, newParent;
var placeholder = ( options.placeholder === null ) ? $('<' + (/^ul|ol$/i.test(this.tagName) ? 'li' : 'div') + ' class="sortable-placeholder"/>') : $(options.placeholder).addClass('sortable-placeholder');
$(this).data('items', options.items);
placeholders = placeholders.add(placeholder);
if (options.connectWith) {
$(options.connectWith).add(this).data('connectWith', options.connectWith);
}
items.attr('role', 'option');
items.attr('aria-grabbed', 'false');
// Setup drag handles
handles.attr('draggable', 'true').not('a[href], img').on('selectstart.h5s', function() {
if (this.dragDrop) {
this.dragDrop();
}
return false;
}).end();
// Handle drag events on draggable items
items.on('dragstart.h5s', function(e) {
var dt = e.originalEvent.dataTransfer;
dt.effectAllowed = 'move';
dt.setData('text', '');
if (options.dragImage && dt.setDragImage) {
dt.setDragImage(options.dragImage, 0, 0);
}
index = (dragging = $(this)).addClass('sortable-dragging').attr('aria-grabbed', 'true').index();
draggingHeight = dragging.outerHeight();
startParent = $(this).parent();
}).on('dragend.h5s',function () {
if (!dragging) {
return;
}
dragging.removeClass('sortable-dragging').attr('aria-grabbed', 'false').show();
placeholders.detach();
newParent = $(this).parent();
if (index !== dragging.index() || startParent.get(0) !== newParent.get(0)) {
dragging.parent().triggerHandler('sortupdate', {item: dragging, oldindex: index, startparent: startParent, endparent: newParent});
}
dragging = null;
draggingHeight = null;
}).add([this, placeholder]).on('dragover.h5s dragenter.h5s drop.h5s', function(e) {
if (!items.is(dragging) && options.connectWith !== $(dragging).parent().data('connectWith')) {
return true;
}
if (e.type === 'drop') {
e.stopPropagation();
placeholders.filter(':visible').after(dragging);
dragging.trigger('dragend.h5s');
return false;
}
e.preventDefault();
e.originalEvent.dataTransfer.dropEffect = 'move';
if (items.is(this)) {
var thisHeight = $(this).outerHeight();
if (options.forcePlaceholderSize) {
placeholder.height(draggingHeight);
}
// Check if $(this) is bigger than the draggable. If it is, we have to define a dead zone to prevent flickering
if (thisHeight > draggingHeight) {
// Dead zone?
var deadZone = thisHeight - draggingHeight, offsetTop = $(this).offset().top;
if (placeholder.index() < $(this).index() && e.originalEvent.pageY < offsetTop + deadZone) {
return false;
}
else if (placeholder.index() > $(this).index() && e.originalEvent.pageY > offsetTop + thisHeight - deadZone) {
return false;
}
}
dragging.hide();
$(this)[placeholder.index() < $(this).index() ? 'after' : 'before'](placeholder);
placeholders.not(placeholder).detach();
} else if (!placeholders.is(this) && !$(this).children(options.items).length) {
placeholders.detach();
$(this).append(placeholder);
}
return false;
});
});
};
})(jQuery);