Skip to content

E
edx-platform
Commit 2d3cba06 by Peter Fogg Committed by cahrens
Options

Rework course overview drag and drop. 

Failed drags bring the element back to where it started; elements are
locked to the y-axis, states are represented as CSS classes for
styling, elements can be dragged across section/subsection borders,
and dragging to the top/bottom of a section Just Works™.

Needs some styling love to give visual representation of where the
dragged element will drop, though.

TODO: It'd be good to have auto expand/collapse for subsections.
parent 8b03c4ab
Showing with 1562 additions and 235 deletions
cms/djangoapps/contentstore/tests/test_contentstore.py
......@@ -1484,7 +1484,7 @@ class ContentStoreTest(ModuleStoreTestCase):
resp = self.client.get(reverse('course_index', kwargs=data))
self.assertContains(
resp,
'<article class="courseware-overview" data-course-id="i4x://MITx/999/course/Robot_Super_Course">',
'<article class="courseware-overview" data-id="i4x://MITx/999/course/Robot_Super_Course">',
status_code=200,
html=True
)
......
cms/static/js/views/overview.js
require(["jquery", "jquery.ui", "gettext", "js/hesitate", "js/views/feedback_notification"],
function($, ui, gettext, HesitateEvent, NotificationView) {
$(document).ready(function() {
// making the unit list draggable. Note: sortable didn't work b/c it considered
// drop points which the user hovered over as destinations and proactively changed
// the dom; so, if the user subsequently dropped at an illegal spot, the reversion
// point was the last dom change.
$('.unit').draggable({
axis: 'y',
handle: '.drag-handle',
zIndex: 999,
start: initiateHesitate,
// left 2nd arg in as inert selector b/c i was uncertain whether we'd try to get the shove up/down
// to work in the future
drag: generateCheckHoverState('.collapsed', ''),
stop: removeHesitate,
revert: "invalid"
});
// Subsection reordering
$('.id-holder').draggable({
axis: 'y',
handle: '.section-item .drag-handle',
zIndex: 999,
start: initiateHesitate,
drag: generateCheckHoverState('.courseware-section.collapsed', ''),
stop: removeHesitate,
revert: "invalid"
});
// Section reordering
$('.courseware-section').draggable({
axis: 'y',
handle: 'header .drag-handle',
stack: '.courseware-section',
revert: "invalid"
});
$('.sortable-unit-list').droppable({
accept : '.unit',
greedy: true,
tolerance: "pointer",
hoverClass: "dropover",
drop: onUnitReordered
});
$('.subsection-list > ol').droppable({
// why don't we have a more useful class for subsections than id-holder?
accept : '.id-holder', // '.unit, .id-holder',
tolerance: "pointer",
hoverClass: "dropover",
drop: onSubsectionReordered,
greedy: true
});
// Section reordering
$('.courseware-overview').droppable({
accept : '.courseware-section',
tolerance: "pointer",
drop: onSectionReordered,
greedy: true
});
// stop clicks on drag bars from doing their thing w/o stopping drag
$('.drag-handle').click(function(e) {e.preventDefault(); });
});
HesitateEvent.toggleXpandHesitation = null;
function initiateHesitate(event, ui) {
HesitateEvent.toggleXpandHesitation = new HesitateEvent(expandSection, 'dragLeave', true);
$('.collapsed').on('dragEnter', HesitateEvent.toggleXpandHesitation, HesitateEvent.toggleXpandHesitation.trigger);
$('.collapsed, .unit, .id-holder').each(function() {
this.proportions = {width : this.offsetWidth, height : this.offsetHeight };
// reset b/c these were holding values from aborts
this.isover = false;
});
}
// Section
makeDraggable(
'.courseware-section',
'a.section-drag-handle',
'.courseware-overview',
'article.courseware-overview'
);
// Subsection
makeDraggable(
'.id-holder',
'a.subsection-drag-handle',
'.subsection-list > ol',
'.subsection-list > ol'
);
// Unit
makeDraggable(
'.unit',
'a.unit-drag-handle',
'.sortable-unit-list',
'li.branch'
);
function computeIntersection(droppable, uiHelper, y) {
/*
* Test whether y falls within the bounds of the droppable on the Y axis
* Make `type` draggable using `handleClass`, and able to be
* dropped into `droppableClass`.
*/
// NOTE: this only judges y axis intersection b/c that's all we're doing right now
// don't expand the thing being carried
if (uiHelper.is(droppable)) {
return null;
function makeDraggable(type, handleClass, droppableClass, parentLocationSelector) {
_.each(
$(type),
function(ele) {
// Remember data necessary to reconstruct the parent-child relationships
$(ele).data('droppable-class', droppableClass);
$(ele).data('parent-location-selector', parentLocationSelector);
$(ele).data('child-selector', type);
var draggable = new Draggabilly(ele, {
handle: handleClass,
axis: 'y'
});
draggable.on('dragStart', onDragStart);
draggable.on('dragMove', onDragMove);
draggable.on('dragEnd', onDragEnd);
}
);
}
$.extend(droppable, {offset : $(droppable).offset()});
var t = droppable.offset.top,
b = t + droppable.proportions.height;
/*
* Determine information about where to drop the currently dragged
* element. Returns the element to attach to and the method of
* attachment ('before', 'after', or 'prepend').
*/
function findDestination(ele) {
var eleY = ele.offset().top;
var containers = $(ele.data('droppable-class'));
for(var i = 0; i < containers.length; i++) {
var container = $(containers[i]);
// Exclude the 'new unit' buttons, and make sure we don't
// prepend an element to itself
var siblings = container.children().filter(function () {
return $(this).data('id') !== undefined && !$(this).is(ele);
});
// If the list is empty, we should prepend to it
if(siblings.length == 0) {
if(Math.abs(eleY - container.offset().top) < 50) {
return {
ele: container,
attachMethod: 'prepend'
};
}
}
// Otherwise the list is populated, and we should attach before/after a sibling
else {
for(var j = 0; j < siblings.length; j++) {
var $sibling = $(siblings[j]);
var siblingHeight = $sibling.height();
var siblingY = $sibling.offset().top;
if(Math.abs(eleY - siblingY) < siblingHeight) {
return {
ele: $sibling,
attachMethod: siblingY > eleY ? 'before' : 'after'
};
}
}
}
}
if (t === b) {
// probably wrong values b/c invisible at the time of caching
droppable.proportions = { width : droppable.offsetWidth, height : droppable.offsetHeight };
b = t + droppable.proportions.height;
// Failed drag
return {
ele: null,
attachMethod: ''
};
}
// equivalent to the intersects test
return (t < y && // Bottom Half
y < b ); // Top Half
}
// NOTE: selectorsToShove is not currently being used but I left this code as it did work but not well
function generateCheckHoverState(selectorsToOpen, selectorsToShove) {
return function(event, ui) {
// copied from jquery.ui.droppable.js $.ui.ddmanager.drag & other ui.intersect
var draggable = $(this).data("ui-draggable"),
centerY = (draggable.positionAbs || draggable.position.absolute).top + (draggable.helperProportions.height / 2);
$(selectorsToOpen).each(function() {
var intersects = computeIntersection(this, ui.helper, centerY),
c = !intersects && this.isover ? "isout" : (intersects && !this.isover ? "isover" : null);
if(!c) {
return;
}
this[c] = true;
this[c === "isout" ? "isover" : "isout"] = false;
$(this).trigger(c === "isover" ? "dragEnter" : "dragLeave");
});
// Information about the current drag.
var dragState = {};
function onDragStart(draggie, event, pointer) {
var ele = $(draggie.element);
dragState = {
// Where we started, in case of a failed drag
offset: ele.offset(),
// Which element will be dropped into/onto on success
dropDestination: null
};
}
$(selectorsToShove).each(function() {
var intersectsBottom = computeIntersection(this, ui.helper, (draggable.positionAbs || draggable.position.absolute).top);
function onDragMove(draggie, event, pointer) {
var ele = $(draggie.element);
var currentReplacement = findDestination(ele).ele;
// Clear out the old destination
if(dragState.dropDestination) {
dragState.dropDestination.removeClass('drop-destination');
}
// Mark the new destination
if(currentReplacement) {
currentReplacement.addClass('drop-destination');
dragState.dropDestination = currentReplacement;
}
}
if ($(this).hasClass('ui-dragging-pushup')) {
if (!intersectsBottom) {
console.log('not up', $(this).data('id'));
$(this).removeClass('ui-dragging-pushup');
}
}
else if (intersectsBottom) {
console.log('up', $(this).data('id'));
$(this).addClass('ui-dragging-pushup');
}
function onDragEnd(draggie, event, pointer) {
var ele = $(draggie.element);
var intersectsTop = computeIntersection(this, ui.helper,
(draggable.positionAbs || draggable.position.absolute).top + draggable.helperProportions.height);
var intersect = findDestination(ele);
var destination = intersect.ele;
var method = intersect.attachMethod;
if ($(this).hasClass('ui-dragging-pushdown')) {
if (!intersectsTop) {
console.log('not down', $(this).data('id'));
$(this).removeClass('ui-dragging-pushdown');
}
}
else if (intersectsTop) {
console.log('down', $(this).data('id'));
$(this).addClass('ui-dragging-pushdown');
}
// If the drag succeeded, rearrange the DOM and send the result.
if(destination) {
destination[method](ele);
handleReorder(ele);
}
// Everything in its right place
ele.css({
top: 'auto',
left: 'auto'
});
};
}
function removeHesitate(event, ui) {
$('.collapsed').off('dragEnter', HesitateEvent.toggleXpandHesitation.trigger);
$('.ui-dragging-pushdown').removeClass('ui-dragging-pushdown');
$('.ui-dragging-pushup').removeClass('ui-dragging-pushup');
HesitateEvent.toggleXpandHesitation = null;
}
function expandSection(event) {
$(event.delegateTarget).removeClass('collapsed', 400);
// don't descend to icon's on children (which aren't under first child) only to this element's icon
$(event.delegateTarget).children().first().find('.expand-collapse-icon').removeClass('expand', 400).addClass('collapse');
}
function onUnitReordered(event, ui) {
// a unit's been dropped on this subsection,
// figure out where it came from and where it slots in.
_handleReorder(event, ui, 'subsection-id', 'li:.leaf');
}
function onSubsectionReordered(event, ui) {
// a subsection has been dropped on this section,
// figure out where it came from and where it slots in.
_handleReorder(event, ui, 'section-id', 'li:.branch');
}
function onSectionReordered(event, ui) {
// a section moved w/in the overall (cannot change course via this, so no parentage change possible, just order)
_handleReorder(event, ui, 'course-id', '.courseware-section');
}
function _handleReorder(event, ui, parentIdField, childrenSelector) {
// figure out where it came from and where it slots in.
var subsection_id = $(event.target).data(parentIdField);
var _els = $(event.target).children(childrenSelector);
var children = _els.map(function(idx, el) { return $(el).data('id'); }).get();
// if new to this parent, figure out which parent to remove it from and do so
if (!_.contains(children, ui.draggable.data('id'))) {
var old_parent = ui.draggable.parent();
var old_children = old_parent.children(childrenSelector).map(function(idx, el) { return $(el).data('id'); }).get();
old_children = _.without(old_children, ui.draggable.data('id'));
$.ajax({
url: "/save_item",
type: "POST",
dataType: "json",
contentType: "application/json",
data:JSON.stringify({ 'id' : old_parent.data(parentIdField), 'children' : old_children})
});
}
else {
// staying in same parent
// remove so that the replacement in the right place doesn't double it
children = _.without(children, ui.draggable.data('id'));
}
// add to this parent (figure out where)
for (var i = 0, bump = 0; i < _els.length; i++) {
if (ui.draggable.is(_els[i])) {
bump = -1; // bump indicates that the draggable was passed in the dom but not children's list b/c
// it's not in that list
}
else if (ui.offset.top < $(_els[i]).offset().top) {
// insert at i in children and _els
ui.draggable.insertBefore($(_els[i]));
// TODO figure out correct way to have it remove the style: top:n; setting (and similar line below)
ui.draggable.attr("style", "position:relative;");
children.splice(i + bump, 0, ui.draggable.data('id'));
break;
}
// Clear dragging state in preparation for the next event.
if(dragState.dropDestination) {
dragState.dropDestination.removeClass('drop-destination');
}
// see if it goes at end (the above loop didn't insert it)
if (!_.contains(children, ui.draggable.data('id'))) {
$(event.target).append(ui.draggable);
ui.draggable.attr("style", "position:relative;"); // STYLE hack too
children.push(ui.draggable.data('id'));
dragState = {};
}
/*
* Find all parent-child changes and save them.
*/
function handleReorder(ele) {
var itemID = ele.data('id');
var parentSelector = ele.data('parent-location-selector');
var childrenSelector = ele.data('child-selector');
var newParentEle = ele.parents(parentSelector).first();
var newParentID = newParentEle.data('id');
var oldParentID = ele.data('parent-id');
// If the parent has changed, update the children of the old parent.
if(oldParentID !== newParentID) {
// Find the old parent element.
var oldParentEle = $(parentSelector).filter(function() {
return $(this).data('id') === oldParentID;
});
saveItem(oldParentEle, childrenSelector, function() {
ele.data('parent-id', newParentID);
});
}
var saving = new NotificationView.Mini({
var saving = new CMS.Views.Notification.Mini({
title: gettext('Saving&hellip;')
});
saving.show();
$.ajax({
url: "/save_item",
type: "POST",
dataType: "json",
contentType: "application/json",
data:JSON.stringify({ 'id' : subsection_id, 'children' : children}),
success: function() {
saving.hide();
}
saveItem(newParentEle, childrenSelector, function() {
saving.hide();
});
}
}
}); // end define()
/*
* Actually save the update to the server. Takes the element
* representing the parent item to save, a CSS selector to find
* its children, and a success callback.
*/
function saveItem(ele, childrenSelector, success) {
// Find all current child IDs.
var children = _.map(
ele.find(childrenSelector),
function(child) {
return $(child).data('id');
}
);
$.ajax({
url: '/save_item',
type: 'POST',
dataType: 'json',
contentType: 'application/json',
data: JSON.stringify({
id: ele.data('id'),
children: children
}),
success: success
});
}
});
cms/templates/overview.html
......@@ -138,9 +138,9 @@ require(["domReady!", "jquery", "js/models/location", "js/models/section", "js/v
<div class="main-wrapper">
<div class="inner-wrapper">
<article class="courseware-overview" data-course-id="${context_course.location.url()}">
<article class="courseware-overview" data-id="${context_course.location.url()}">
% for section in sections:
<section class="courseware-section branch" data-id="${section.location}">
<section class="courseware-section branch" data-id="${section.location}" data-parent-id="${context_course.location.url()}">
<header>
<a href="#" data-tooltip="${_('Expand/collapse this section')}" class="expand-collapse-icon collapse"></a>
......@@ -169,7 +169,7 @@ require(["domReady!", "jquery", "js/models/location", "js/models/section", "js/v
<div class="item-actions">
<a href="#" data-tooltip="${_('Delete this section')}" class="delete-button delete-section-button"><span class="delete-icon"></span></a>
<a href="#" data-tooltip="${_('Drag to reorder')}" class="drag-handle"></a>
<a href="#" data-tooltip="${_('Drag to reorder')}" class="drag-handle section-drag-handle"></a>
</div>
</header>
<div class="subsection-list">
......@@ -178,9 +178,9 @@ require(["domReady!", "jquery", "js/models/location", "js/models/section", "js/v
<span class="new-folder-icon"></span>${_("New Subsection")}
</a>
</div>
<ol data-section-id="${section.location.url()}">
<ol data-id="${section.location.url()}">
% for subsection in section.get_children():
<li class="branch collapsed id-holder" data-id="${subsection.location}">
<li class="branch collapsed id-holder draggable" data-id="${subsection.location}" data-parent-id="${section.location.url()}">
<div class="section-item">
<div class="details">
<a href="#" data-tooltip="${_('Expand/collapse this subsection')}" class="expand-collapse-icon expand"></a>
......@@ -195,7 +195,7 @@ require(["domReady!", "jquery", "js/models/location", "js/models/section", "js/v
<div class="item-actions">
<a href="#" data-tooltip="${_('Delete this subsection')}" class="delete-button delete-subsection-button"><span class="delete-icon"></span></a>
<a href="#" data-tooltip="${_('Drag to reorder')}" class="drag-handle"></a>
<a href="#" data-tooltip="${_('Drag to reorder')}" class="drag-handle subsection-drag-handle"></a>
</div>
</div>
${units.enum_units(subsection)}
......
cms/templates/widgets/units.html
......@@ -5,13 +5,13 @@
This def will enumerate through a passed in subsection and list all of the units
-->
<%def name="enum_units(subsection, actions=True, selected=None, sortable=True, subsection_units=None)">
<ol ${'class="sortable-unit-list"' if sortable else ''} data-subsection-id="${subsection.location}">
<ol ${'class="sortable-unit-list"' if sortable else ''}>
<%
if subsection_units is None:
subsection_units = subsection.get_children()
%>
% for unit in subsection_units:
<li class="leaf unit" data-id="${unit.location}">
<li class="leaf unit" data-id="${unit.location}" data-parent-id="${subsection.location.url()}">
<%
unit_state = compute_unit_state(unit)
if unit.location == selected:
......@@ -27,7 +27,7 @@ This def will enumerate through a passed in subsection and list all of the units
% if actions:
<div class="item-actions">
<a href="#" data-tooltip="Delete this unit" class="delete-button" data-id="${unit.location}"><span class="delete-icon"></span></a>
<a href="#" data-tooltip="Drag to sort" class="drag-handle"></a>
<a href="#" data-tooltip="Drag to sort" class="drag-handle unit-drag-handle"></a>
</div>
% endif
</div>
......
common/static/js/vendor/draggabilly.pkgd.js 0 → 100644
/*!
* Draggabilly PACKAGED v1.0.5
* Make that shiz draggable
* http://draggabilly.desandro.com
*/
/*!
* classie - class helper functions
* from bonzo https://github.com/ded/bonzo
*
* classie.has( elem, 'my-class' ) -> true/false
* classie.add( elem, 'my-new-class' )
* classie.remove( elem, 'my-unwanted-class' )
* classie.toggle( elem, 'my-class' )
*/
/*jshint browser: true, strict: true, undef: true */
/*global define: false */
( function( window ) {
'use strict';
// class helper functions from bonzo https://github.com/ded/bonzo
function classReg( className ) {
return new RegExp("(^|\\s+)" + className + "(\\s+|$)");
}
// classList support for class management
// altho to be fair, the api sucks because it won't accept multiple classes at once
var hasClass, addClass, removeClass;
if ( 'classList' in document.documentElement ) {
hasClass = function( elem, c ) {
return elem.classList.contains( c );
};
addClass = function( elem, c ) {
elem.classList.add( c );
};
removeClass = function( elem, c ) {
elem.classList.remove( c );
};
}
else {
hasClass = function( elem, c ) {
return classReg( c ).test( elem.className );
};
addClass = function( elem, c ) {
if ( !hasClass( elem, c ) ) {
elem.className = elem.className + ' ' + c;
}
};
removeClass = function( elem, c ) {
elem.className = elem.className.replace( classReg( c ), ' ' );
};
}
function toggleClass( elem, c ) {
var fn = hasClass( elem, c ) ? removeClass : addClass;
fn( elem, c );
}
var classie = {
// full names
hasClass: hasClass,
addClass: addClass,
removeClass: removeClass,
toggleClass: toggleClass,
// short names
has: hasClass,
add: addClass,
remove: removeClass,
toggle: toggleClass
};
// transport
if ( typeof define === 'function' && define.amd ) {
// AMD
define( classie );
} else {
// browser global
window.classie = classie;
}
})( window );
/*!
* eventie v1.0.3
* event binding helper
* eventie.bind( elem, 'click', myFn )
* eventie.unbind( elem, 'click', myFn )
*/
/*jshint browser: true, undef: true, unused: true */
/*global define: false */
( function( window ) {
'use strict';
var docElem = document.documentElement;
var bind = function() {};
if ( docElem.addEventListener ) {
bind = function( obj, type, fn ) {
obj.addEventListener( type, fn, false );
};
} else if ( docElem.attachEvent ) {
bind = function( obj, type, fn ) {
obj[ type + fn ] = fn.handleEvent ?
function() {
var event = window.event;
// add event.target
event.target = event.target || event.srcElement;
fn.handleEvent.call( fn, event );
} :
function() {
var event = window.event;
// add event.target
event.target = event.target || event.srcElement;
fn.call( obj, event );
};
obj.attachEvent( "on" + type, obj[ type + fn ] );
};
}
var unbind = function() {};
if ( docElem.removeEventListener ) {
unbind = function( obj, type, fn ) {
obj.removeEventListener( type, fn, false );
};
} else if ( docElem.detachEvent ) {
unbind = function( obj, type, fn ) {
obj.detachEvent( "on" + type, obj[ type + fn ] );
try {
delete obj[ type + fn ];
} catch ( err ) {
// can't delete window object properties
obj[ type + fn ] = undefined;
}
};
}
var eventie = {
bind: bind,
unbind: unbind
};
// transport
if ( typeof define === 'function' && define.amd ) {
// AMD
define( eventie );
} else {
// browser global
window.eventie = eventie;
}
})( this );
/*!
* docReady
* Cross browser DOMContentLoaded event emitter
*/
/*jshint browser: true, strict: true, undef: true, unused: true*/
/*global define: false */
( function( window ) {
'use strict';
var document = window.document;
// collection of functions to be triggered on ready
var queue = [];
function docReady( fn ) {
// throw out non-functions
if ( typeof fn !== 'function' ) {
return;
}
if ( docReady.isReady ) {
// ready now, hit it
fn();
} else {
// queue function when ready
queue.push( fn );
}
}
docReady.isReady = false;
// triggered on various doc ready events
function init( event ) {
// bail if IE8 document is not ready just yet
var isIE8NotReady = event.type === 'readystatechange' && document.readyState !== 'complete';
if ( docReady.isReady || isIE8NotReady ) {
return;
}
docReady.isReady = true;
// process queue
for ( var i=0, len = queue.length; i < len; i++ ) {
var fn = queue[i];
fn();
}
}
function defineDocReady( eventie ) {
eventie.bind( document, 'DOMContentLoaded', init );
eventie.bind( document, 'readystatechange', init );
eventie.bind( window, 'load', init );
return docReady;
}
// transport
if ( typeof define === 'function' && define.amd ) {
// AMD
define( [ 'eventie' ], defineDocReady );
} else {
// browser global
window.docReady = defineDocReady( window.eventie );
}
})( this );
/*!
* EventEmitter v4.1.1 - git.io/ee
* Oliver Caldwell
* MIT license
* @preserve
*/
(function (exports) {
// Place the script in strict mode
'use strict';
/**
* Class for managing events.
* Can be extended to provide event functionality in other classes.
*
* @class Manages event registering and emitting.
*/
function EventEmitter() {}
// Shortcuts to improve speed and size
// Easy access to the prototype
var proto = EventEmitter.prototype,
nativeIndexOf = Array.prototype.indexOf ? true : false;
/**
* Finds the index of the listener for the event in it's storage array.
*
* @param {Function} listener Method to look for.
* @param {Function[]} listeners Array of listeners to search through.
* @return {Number} Index of the specified listener, -1 if not found
* @api private
*/
function indexOfListener(listener, listeners) {
// Return the index via the native method if possible
if (nativeIndexOf) {
return listeners.indexOf(listener);
}
// There is no native method
// Use a manual loop to find the index
var i = listeners.length;
while (i--) {
// If the listener matches, return it's index
if (listeners[i] === listener) {
return i;
}
}
// Default to returning -1
return -1;
}
/**
* Fetches the events object and creates one if required.
*
* @return {Object} The events storage object.
* @api private
*/
proto._getEvents = function () {
return this._events || (this._events = {});
};
/**
* Returns the listener array for the specified event.
* Will initialise the event object and listener arrays if required.
* Will return an object if you use a regex search. The object contains keys for each matched event. So /ba[rz]/ might return an object containing bar and baz. But only if you have either defined them with defineEvent or added some listeners to them.
* Each property in the object response is an array of listener functions.
*
* @param {String|RegExp} evt Name of the event to return the listeners from.
* @return {Function[]|Object} All listener functions for the event.
*/
proto.getListeners = function (evt) {
// Create a shortcut to the storage object
// Initialise it if it does not exists yet
var events = this._getEvents(),
response,
key;
// Return a concatenated array of all matching events if
// the selector is a regular expression.
if (typeof evt === 'object') {
response = {};
for (key in events) {
if (events.hasOwnProperty(key) && evt.test(key)) {
response[key] = events[key];
}
}
}
else {
response = events[evt] || (events[evt] = []);
}
return response;
};
/**
* Fetches the requested listeners via getListeners but will always return the results inside an object. This is mainly for internal use but others may find it useful.
*
* @param {String|RegExp} evt Name of the event to return the listeners from.
* @return {Object} All listener functions for an event in an object.
*/
proto.getListenersAsObject = function (evt) {
var listeners = this.getListeners(evt),
response;
if (listeners instanceof Array) {
response = {};
response[evt] = listeners;
}
return response || listeners;
};
/**
* Adds a listener function to the specified event.
* The listener will not be added if it is a duplicate.
* If the listener returns true then it will be removed after it is called.
* If you pass a regular expression as the event name then the listener will be added to all events that match it.
*
* @param {String|RegExp} evt Name of the event to attach the listener to.
* @param {Function} listener Method to be called when the event is emitted. If the function returns true then it will be removed after calling.
* @return {Object} Current instance of EventEmitter for chaining.
*/
proto.addListener = function (evt, listener) {
var listeners = this.getListenersAsObject(evt),
key;
for (key in listeners) {
if (listeners.hasOwnProperty(key) &&
indexOfListener(listener, listeners[key]) === -1) {
listeners[key].push(listener);
}
}
// Return the instance of EventEmitter to allow chaining
return this;
};
/**
* Alias of addListener
*/
proto.on = proto.addListener;
/**
* Defines an event name. This is required if you want to use a regex to add a listener to multiple events at once. If you don't do this then how do you expect it to know what event to add to? Should it just add to every possible match for a regex? No. That is scary and bad.
* You need to tell it what event names should be matched by a regex.
*
* @param {String} evt Name of the event to create.
* @return {Object} Current instance of EventEmitter for chaining.
*/
proto.defineEvent = function (evt) {
this.getListeners(evt);
return this;
};
/**
* Uses defineEvent to define multiple events.
*
* @param {String[]} evts An array of event names to define.
* @return {Object} Current instance of EventEmitter for chaining.
*/
proto.defineEvents = function (evts)
{
for (var i = 0; i < evts.length; i += 1) {
this.defineEvent(evts[i]);
}
return this;
};
/**
* Removes a listener function from the specified event.
* When passed a regular expression as the event name, it will remove the listener from all events that match it.
*
* @param {String|RegExp} evt Name of the event to remove the listener from.
* @param {Function} listener Method to remove from the event.
* @return {Object} Current instance of EventEmitter for chaining.
*/
proto.removeListener = function (evt, listener) {
var listeners = this.getListenersAsObject(evt),
index,
key;
for (key in listeners) {
if (listeners.hasOwnProperty(key)) {
index = indexOfListener(listener, listeners[key]);
if (index !== -1) {
listeners[key].splice(index, 1);
}
}
}
// Return the instance of EventEmitter to allow chaining
return this;
};
/**
* Alias of removeListener
*/
proto.off = proto.removeListener;
/**
* Adds listeners in bulk using the manipulateListeners method.
* If you pass an object as the second argument you can add to multiple events at once. The object should contain key value pairs of events and listeners or listener arrays. You can also pass it an event name and an array of listeners to be added.
* You can also pass it a regular expression to add the array of listeners to all events that match it.
* Yeah, this function does quite a bit. That's probably a bad thing.
*
* @param {String|Object|RegExp} evt An event name if you will pass an array of listeners next. An object if you wish to add to multiple events at once.
* @param {Function[]} [listeners] An optional array of listener functions to add.
* @return {Object} Current instance of EventEmitter for chaining.
*/
proto.addListeners = function (evt, listeners) {
// Pass through to manipulateListeners
return this.manipulateListeners(false, evt, listeners);
};
/**
* Removes listeners in bulk using the manipulateListeners method.
* If you pass an object as the second argument you can remove from multiple events at once. The object should contain key value pairs of events and listeners or listener arrays.
* You can also pass it an event name and an array of listeners to be removed.
* You can also pass it a regular expression to remove the listeners from all events that match it.
*
* @param {String|Object|RegExp} evt An event name if you will pass an array of listeners next. An object if you wish to remove from multiple events at once.
* @param {Function[]} [listeners] An optional array of listener functions to remove.
* @return {Object} Current instance of EventEmitter for chaining.
*/
proto.removeListeners = function (evt, listeners) {
// Pass through to manipulateListeners
return this.manipulateListeners(true, evt, listeners);
};
/**
* Edits listeners in bulk. The addListeners and removeListeners methods both use this to do their job. You should really use those instead, this is a little lower level.
* The first argument will determine if the listeners are removed (true) or added (false).
* If you pass an object as the second argument you can add/remove from multiple events at once. The object should contain key value pairs of events and listeners or listener arrays.
* You can also pass it an event name and an array of listeners to be added/removed.
* You can also pass it a regular expression to manipulate the listeners of all events that match it.
*
* @param {Boolean} remove True if you want to remove listeners, false if you want to add.
* @param {String|Object|RegExp} evt An event name if you will pass an array of listeners next. An object if you wish to add/remove from multiple events at once.
* @param {Function[]} [listeners] An optional array of listener functions to add/remove.
* @return {Object} Current instance of EventEmitter for chaining.
*/
proto.manipulateListeners = function (remove, evt, listeners) {
// Initialise any required variables
var i,
value,
single = remove ? this.removeListener : this.addListener,
multiple = remove ? this.removeListeners : this.addListeners;
// If evt is an object then pass each of it's properties to this method
if (typeof evt === 'object' && !(evt instanceof RegExp)) {
for (i in evt) {
if (evt.hasOwnProperty(i) && (value = evt[i])) {
// Pass the single listener straight through to the singular method
if (typeof value === 'function') {
single.call(this, i, value);
}
else {
// Otherwise pass back to the multiple function
multiple.call(this, i, value);
}
}
}
}
else {
// So evt must be a string
// And listeners must be an array of listeners
// Loop over it and pass each one to the multiple method
i = listeners.length;
while (i--) {
single.call(this, evt, listeners[i]);
}
}
// Return the instance of EventEmitter to allow chaining
return this;
};
/**
* Removes all listeners from a specified event.
* If you do not specify an event then all listeners will be removed.
* That means every event will be emptied.
* You can also pass a regex to remove all events that match it.
*
* @param {String|RegExp} [evt] Optional name of the event to remove all listeners for. Will remove from every event if not passed.
* @return {Object} Current instance of EventEmitter for chaining.
*/
proto.removeEvent = function (evt) {
var type = typeof evt,
events = this._getEvents(),
key;
// Remove different things depending on the state of evt
if (type === 'string') {
// Remove all listeners for the specified event
delete events[evt];
}
else if (type === 'object') {
// Remove all events matching the regex.
for (key in events) {
if (events.hasOwnProperty(key) && evt.test(key)) {
delete events[key];
}
}
}
else {
// Remove all listeners in all events
delete this._events;
}
// Return the instance of EventEmitter to allow chaining
return this;
};
/**
* Emits an event of your choice.
* When emitted, every listener attached to that event will be executed.
* If you pass the optional argument array then those arguments will be passed to every listener upon execution.
* Because it uses `apply`, your array of arguments will be passed as if you wrote them out separately.
* So they will not arrive within the array on the other side, they will be separate.
* You can also pass a regular expression to emit to all events that match it.
*
* @param {String|RegExp} evt Name of the event to emit and execute listeners for.
* @param {Array} [args] Optional array of arguments to be passed to each listener.
* @return {Object} Current instance of EventEmitter for chaining.
*/
proto.emitEvent = function (evt, args) {
var listeners = this.getListenersAsObject(evt),
i,
key,
response;
for (key in listeners) {
if (listeners.hasOwnProperty(key)) {
i = listeners[key].length;
while (i--) {
// If the listener returns true then it shall be removed from the event
// The function is executed either with a basic call or an apply if there is an args array
response = args ? listeners[key][i].apply(null, args) : listeners[key][i]();
if (response === true) {
this.removeListener(evt, listeners[key][i]);
}
}
}
}
// Return the instance of EventEmitter to allow chaining
return this;
};
/**
* Alias of emitEvent
*/
proto.trigger = proto.emitEvent;
/**
* Subtly different from emitEvent in that it will pass its arguments on to the listeners, as opposed to taking a single array of arguments to pass on.
* As with emitEvent, you can pass a regex in place of the event name to emit to all events that match it.
*
* @param {String|RegExp} evt Name of the event to emit and execute listeners for.
* @param {...*} Optional additional arguments to be passed to each listener.
* @return {Object} Current instance of EventEmitter for chaining.
*/
proto.emit = function (evt) {
var args = Array.prototype.slice.call(arguments, 1);
return this.emitEvent(evt, args);
};
// Expose the class either via AMD or the global object
if (typeof define === 'function' && define.amd) {
define(function () {
return EventEmitter;
});
}
else {
exports.EventEmitter = EventEmitter;
}
}(this));
/*!
* getStyleProperty by kangax
* http://perfectionkills.com/feature-testing-css-properties/
*/
/*jshint browser: true, strict: true, undef: true */
/*globals define: false */
( function( window ) {
'use strict';
var prefixes = 'Webkit Moz ms Ms O'.split(' ');
var docElemStyle = document.documentElement.style;
function getStyleProperty( propName ) {
if ( !propName ) {
return;
}
// test standard property first
if ( typeof docElemStyle[ propName ] === 'string' ) {
return propName;
}
// capitalize
propName = propName.charAt(0).toUpperCase() + propName.slice(1);
// test vendor specific properties
var prefixed;
for ( var i=0, len = prefixes.length; i < len; i++ ) {
prefixed = prefixes[i] + propName;
if ( typeof docElemStyle[ prefixed ] === 'string' ) {
return prefixed;
}
}
}
// transport
if ( typeof define === 'function' && define.amd ) {
// AMD
define( function() {
return getStyleProperty;
});
} else {
// browser global
window.getStyleProperty = getStyleProperty;
}
})( window );
/**
* getSize v1.1.3
* measure size of elements
*/
/*jshint browser: true, strict: true, undef: true, unused: true */
/*global define: false */
( function( window, undefined ) {
'use strict';
// -------------------------- helpers -------------------------- //
var defView = document.defaultView;
var getStyle = defView && defView.getComputedStyle ?
function( elem ) {
return defView.getComputedStyle( elem, null );
} :
function( elem ) {
return elem.currentStyle;
};
// get a number from a string, not a percentage
function getStyleSize( value ) {
var num = parseFloat( value );
// not a percent like '100%', and a number
var isValid = value.indexOf('%') === -1 && !isNaN( num );
return isValid && num;
}
// -------------------------- measurements -------------------------- //
var measurements = [
'paddingLeft',
'paddingRight',
'paddingTop',
'paddingBottom',
'marginLeft',
'marginRight',
'marginTop',
'marginBottom',
'borderLeftWidth',
'borderRightWidth',
'borderTopWidth',
'borderBottomWidth'
];
function getZeroSize() {
var size = {
width: 0,
height: 0,
innerWidth: 0,
innerHeight: 0,
outerWidth: 0,
outerHeight: 0
};
for ( var i=0, len = measurements.length; i < len; i++ ) {
var measurement = measurements[i];
size[ measurement ] = 0;
}
return size;
}
function defineGetSize( getStyleProperty ) {
// -------------------------- box sizing -------------------------- //
var boxSizingProp = getStyleProperty('boxSizing');
var isBoxSizeOuter;
/**
* WebKit measures the outer-width on style.width on border-box elems
* IE & Firefox measures the inner-width
*/
( function() {
if ( !boxSizingProp ) {
return;
}
var div = document.createElement('div');
div.style.width = '200px';
div.style.padding = '1px 2px 3px 4px';
div.style.borderStyle = 'solid';
div.style.borderWidth = '1px 2px 3px 4px';
div.style[ boxSizingProp ] = 'border-box';
var body = document.body || document.documentElement;
body.appendChild( div );
var style = getStyle( div );
isBoxSizeOuter = getStyleSize( style.width ) === 200;
body.removeChild( div );
})();
// -------------------------- getSize -------------------------- //
function getSize( elem ) {
// use querySeletor if elem is string
if ( typeof elem === 'string' ) {
elem = document.querySelector( elem );
}
// do not proceed on non-objects
if ( !elem || typeof elem !== 'object' || !elem.nodeType ) {
return;
}
var style = getStyle( elem );
// if hidden, everything is 0
if ( style.display === 'none' ) {
return getZeroSize();
}
var size = {};
size.width = elem.offsetWidth;
size.height = elem.offsetHeight;
var isBorderBox = size.isBorderBox = !!( boxSizingProp &&
style[ boxSizingProp ] && style[ boxSizingProp ] === 'border-box' );
// get all measurements
for ( var i=0, len = measurements.length; i < len; i++ ) {
var measurement = measurements[i];
var value = style[ measurement ];
var num = parseFloat( value );
// any 'auto', 'medium' value will be 0
size[ measurement ] = !isNaN( num ) ? num : 0;
}
var paddingWidth = size.paddingLeft + size.paddingRight;
var paddingHeight = size.paddingTop + size.paddingBottom;
var marginWidth = size.marginLeft + size.marginRight;
var marginHeight = size.marginTop + size.marginBottom;
var borderWidth = size.borderLeftWidth + size.borderRightWidth;
var borderHeight = size.borderTopWidth + size.borderBottomWidth;
var isBorderBoxSizeOuter = isBorderBox && isBoxSizeOuter;
// overwrite width and height if we can get it from style
var styleWidth = getStyleSize( style.width );
if ( styleWidth !== false ) {
size.width = styleWidth +
// add padding and border unless it's already including it
( isBorderBoxSizeOuter ? 0 : paddingWidth + borderWidth );
}
var styleHeight = getStyleSize( style.height );
if ( styleHeight !== false ) {
size.height = styleHeight +
// add padding and border unless it's already including it
( isBorderBoxSizeOuter ? 0 : paddingHeight + borderHeight );
}
size.innerWidth = size.width - ( paddingWidth + borderWidth );
size.innerHeight = size.height - ( paddingHeight + borderHeight );
size.outerWidth = size.width + marginWidth;
size.outerHeight = size.height + marginHeight;
return size;
}
return getSize;
}
// transport
if ( typeof define === 'function' && define.amd ) {
// AMD
define( [ 'get-style-property' ], defineGetSize );
} else {
// browser global
window.getSize = defineGetSize( window.getStyleProperty );
}
})( window );
/*!
* Draggabilly v1.0.5
* Make that shiz draggable
* http://draggabilly.desandro.com
*/
( function( window ) {
'use strict';
// vars
var document = window.document;
// -------------------------- helpers -------------------------- //
// extend objects
function extend( a, b ) {
for ( var prop in b ) {
a[ prop ] = b[ prop ];
}
return a;
}
function noop() {}
// ----- get style ----- //
var defView = document.defaultView;
var getStyle = defView && defView.getComputedStyle ?
function( elem ) {
return defView.getComputedStyle( elem, null );
} :
function( elem ) {
return elem.currentStyle;
};
// http://stackoverflow.com/a/384380/182183
var isElement = ( typeof HTMLElement === 'object' ) ?
function isElementDOM2( obj ) {
return obj instanceof HTMLElement;
} :
function isElementQuirky( obj ) {
return obj && typeof obj === 'object' &&
obj.nodeType === 1 && typeof obj.nodeName === 'string';
};
// -------------------------- requestAnimationFrame -------------------------- //
// https://gist.github.com/1866474
var lastTime = 0;
var prefixes = 'webkit moz ms o'.split(' ');
// get unprefixed rAF and cAF, if present
var requestAnimationFrame = window.requestAnimationFrame;
var cancelAnimationFrame = window.cancelAnimationFrame;
// loop through vendor prefixes and get prefixed rAF and cAF
var prefix;
for( var i = 0; i < prefixes.length; i++ ) {
if ( requestAnimationFrame && cancelAnimationFrame ) {
break;
}
prefix = prefixes[i];
requestAnimationFrame = requestAnimationFrame || window[ prefix + 'RequestAnimationFrame' ];
cancelAnimationFrame = cancelAnimationFrame || window[ prefix + 'CancelAnimationFrame' ] ||
window[ prefix + 'CancelRequestAnimationFrame' ];
}
// fallback to setTimeout and clearTimeout if either request/cancel is not supported
if ( !requestAnimationFrame || !cancelAnimationFrame ) {
requestAnimationFrame = function( callback ) {
var currTime = new Date().getTime();
var timeToCall = Math.max( 0, 16 - ( currTime - lastTime ) );
var id = window.setTimeout( function() {
callback( currTime + timeToCall );
}, timeToCall );
lastTime = currTime + timeToCall;
return id;
};
cancelAnimationFrame = function( id ) {
window.clearTimeout( id );
};
}
// -------------------------- definition -------------------------- //
function draggabillyDefinition( classie, EventEmitter, eventie, getStyleProperty, getSize ) {
// -------------------------- support -------------------------- //
var transformProperty = getStyleProperty('transform');
// TODO fix quick & dirty check for 3D support
var is3d = !!getStyleProperty('perspective');
// -------------------------- -------------------------- //
function Draggabilly( element, options ) {
this.element = element;
this.options = extend( {}, this.options );
extend( this.options, options );
this._create();
}
// inherit EventEmitter methods
extend( Draggabilly.prototype, EventEmitter.prototype );
Draggabilly.prototype.options = {
};
Draggabilly.prototype._create = function() {
// properties
this.position = {};
this._getPosition();
this.startPoint = { x: 0, y: 0 };
this.dragPoint = { x: 0, y: 0 };
this.startPosition = extend( {}, this.position );
// set relative positioning
var style = getStyle( this.element );
if ( style.position !== 'relative' && style.position !== 'absolute' ) {
this.element.style.position = 'relative';
}
this.enable();
this.setHandles();
};
/**
* set this.handles and bind start events to 'em
*/
Draggabilly.prototype.setHandles = function() {
this.handles = this.options.handle ?
this.element.querySelectorAll( this.options.handle ) : [ this.element ];
for ( var i=0, len = this.handles.length; i < len; i++ ) {
var handle = this.handles[i];
// bind pointer start event
// listen for both, for devices like Chrome Pixel
// which has touch and mouse events
eventie.bind( handle, 'mousedown', this );
eventie.bind( handle, 'touchstart', this );
disableImgOndragstart( handle );
}
};
// remove default dragging interaction on all images in IE8
// IE8 does its own drag thing on images, which messes stuff up
function noDragStart() {
return false;
}
// TODO replace this with a IE8 test
var isIE8 = 'attachEvent' in document.documentElement;
// IE8 only
var disableImgOndragstart = !isIE8 ? noop : function( handle ) {
if ( handle.nodeName === 'IMG' ) {
handle.ondragstart = noDragStart;
}
var images = handle.querySelectorAll('img');
for ( var i=0, len = images.length; i < len; i++ ) {
var img = images[i];
img.ondragstart = noDragStart;
}
};
// get left/top position from style
Draggabilly.prototype._getPosition = function() {
// properties
var style = getStyle( this.element );
var x = parseInt( style.left, 10 );
var y = parseInt( style.top, 10 );
// clean up 'auto' or other non-integer values
this.position.x = isNaN( x ) ? 0 : x;
this.position.y = isNaN( y ) ? 0 : y;
this._addTransformPosition( style );
};
// add transform: translate( x, y ) to position
Draggabilly.prototype._addTransformPosition = function( style ) {
if ( !transformProperty ) {
return;
}
var transform = style[ transformProperty ];
// bail out if value is 'none'
if ( transform.indexOf('matrix') !== 0 ) {
return;
}
// split matrix(1, 0, 0, 1, x, y)
var matrixValues = transform.split(',');
// translate X value is in 12th or 4th position
var xIndex = transform.indexOf('matrix3d') === 0 ? 12 : 4;
var translateX = parseInt( matrixValues[ xIndex ], 10 );
// translate Y value is in 13th or 5th position
var translateY = parseInt( matrixValues[ xIndex + 1 ], 10 );
this.position.x += translateX;
this.position.y += translateY;
};
// -------------------------- events -------------------------- //
// trigger handler methods for events
Draggabilly.prototype.handleEvent = function( event ) {
var method = 'on' + event.type;
if ( this[ method ] ) {
this[ method ]( event );
}
};
// returns the touch that we're keeping track of
Draggabilly.prototype.getTouch = function( touches ) {
for ( var i=0, len = touches.length; i < len; i++ ) {
var touch = touches[i];
if ( touch.identifier === this.pointerIdentifier ) {
return touch;
}
}
};
// ----- start event ----- //
Draggabilly.prototype.onmousedown = function( event ) {
this.dragStart( event, event );
};
Draggabilly.prototype.ontouchstart = function( event ) {
// disregard additional touches
if ( this.isDragging ) {
return;
}
this.dragStart( event, event.changedTouches[0] );
};
function setPointerPoint( point, pointer ) {
point.x = pointer.pageX !== undefined ? pointer.pageX : pointer.clientX;
point.y = pointer.pageY !== undefined ? pointer.pageY : pointer.clientY;
}
/**
* drag start
* @param {Event} event
* @param {Event or Touch} pointer
*/
Draggabilly.prototype.dragStart = function( event, pointer ) {
if ( !this.isEnabled ) {
return;
}
if ( event.preventDefault ) {
event.preventDefault();
} else {
event.returnValue = false;
}
var isTouch = event.type === 'touchstart';
// save pointer identifier to match up touch events
this.pointerIdentifier = pointer.identifier;
this._getPosition();
this.measureContainment();
// point where drag began
setPointerPoint( this.startPoint, pointer );
// position _when_ drag began
this.startPosition.x = this.position.x;
this.startPosition.y = this.position.y;
// reset left/top style
this.setLeftTop();
this.dragPoint.x = 0;
this.dragPoint.y = 0;
// bind move and end events
this._bindEvents({
events: isTouch ? [ 'touchmove', 'touchend', 'touchcancel' ] :
[ 'mousemove', 'mouseup' ],
// IE8 needs to be bound to document
node: event.preventDefault ? window : document
});
classie.add( this.element, 'is-dragging' );
// reset isDragging flag
this.isDragging = true;
this.emitEvent( 'dragStart', [ this, event, pointer ] );
// start animation
this.animate();
};
Draggabilly.prototype._bindEvents = function( args ) {
for ( var i=0, len = args.events.length; i < len; i++ ) {
var event = args.events[i];
eventie.bind( args.node, event, this );
}
// save these arguments
this._boundEvents = args;
};
Draggabilly.prototype._unbindEvents = function() {
var args = this._boundEvents;
for ( var i=0, len = args.events.length; i < len; i++ ) {
var event = args.events[i];
eventie.unbind( args.node, event, this );
}
delete this._boundEvents;
};
Draggabilly.prototype.measureContainment = function() {
var containment = this.options.containment;
if ( !containment ) {
return;
}
this.size = getSize( this.element );
var elemRect = this.element.getBoundingClientRect();
// use element if element
var container = isElement( containment ) ? containment :
// fallback to querySelector if string
typeof containment === 'string' ? document.querySelector( containment ) :
// otherwise just `true`, use the parent
this.element.parentNode;
this.containerSize = getSize( container );
var containerRect = container.getBoundingClientRect();
this.relativeStartPosition = {
x: elemRect.left - containerRect.left,
y: elemRect.top - containerRect.top
};
};
// ----- move event ----- //
Draggabilly.prototype.onmousemove = function( event ) {
this.dragMove( event, event );
};
Draggabilly.prototype.ontouchmove = function( event ) {
var touch = this.getTouch( event.changedTouches );
if ( touch ) {
this.dragMove( event, touch );
}
};
/**
* drag move
* @param {Event} event
* @param {Event or Touch} pointer
*/
Draggabilly.prototype.dragMove = function( event, pointer ) {
var originalX = this.dragPoint.x;
var originalY = this.dragPoint.y;
setPointerPoint( this.dragPoint, pointer );
this.dragPoint.x -= this.startPoint.x;
this.dragPoint.y -= this.startPoint.y;
if ( this.options.containment ) {
var relX = this.relativeStartPosition.x;
var relY = this.relativeStartPosition.y;
this.dragPoint.x = Math.max( this.dragPoint.x, -relX );
this.dragPoint.y = Math.max( this.dragPoint.y, -relY );
this.dragPoint.x = Math.min( this.dragPoint.x, this.containerSize.width - relX - this.size.width );
this.dragPoint.y = Math.min( this.dragPoint.y, this.containerSize.height - relY - this.size.height );
}
if ( this.options.axis === 'x' ) {
this.dragPoint.y = originalY;
}
else if ( this.options.axis === 'y' ) {
this.dragPoint.x = originalX;
}
this.position.x = this.startPosition.x + this.dragPoint.x;
this.position.y = this.startPosition.y + this.dragPoint.y;
this.emitEvent( 'dragMove', [ this, event, pointer ] );
};
// ----- end event ----- //
Draggabilly.prototype.onmouseup = function( event ) {
this.dragEnd( event, event );
};
Draggabilly.prototype.ontouchend = function( event ) {
var touch = this.getTouch( event.changedTouches );
if ( touch ) {
this.dragEnd( event, touch );
}
};
/**
* drag end
* @param {Event} event
* @param {Event or Touch} pointer
*/
Draggabilly.prototype.dragEnd = function( event, pointer ) {
this.isDragging = false;
delete this.pointerIdentifier;
// use top left position when complete
if ( transformProperty ) {
this.element.style[ transformProperty ] = '';
this.setLeftTop();
}
// remove events
this._unbindEvents();
classie.remove( this.element, 'is-dragging' );
this.emitEvent( 'dragEnd', [ this, event, pointer ] );
};
// ----- cancel event ----- //
// coerce to end event
Draggabilly.prototype.ontouchcancel = function( event ) {
var touch = this.getTouch( event.changedTouches );
this.dragEnd( event, touch );
};
// -------------------------- animation -------------------------- //
Draggabilly.prototype.animate = function() {
// only render and animate if dragging
if ( !this.isDragging ) {
return;
}
this.positionDrag();
var _this = this;
requestAnimationFrame( function animateFrame() {
_this.animate();
});
};
// transform translate function
var translate = is3d ?
function( x, y ) {
return 'translate3d( ' + x + 'px, ' + y + 'px, 0)';
} :
function( x, y ) {
return 'translate( ' + x + 'px, ' + y + 'px)';
};
// left/top positioning
Draggabilly.prototype.setLeftTop = function() {
this.element.style.left = this.position.x + 'px';
this.element.style.top = this.position.y + 'px';
};
Draggabilly.prototype.positionDrag = transformProperty ?
function() {
// position with transform
this.element.style[ transformProperty ] = translate( this.dragPoint.x, this.dragPoint.y );
} : Draggabilly.prototype.setLeftTop;
Draggabilly.prototype.enable = function() {
this.isEnabled = true;
};
Draggabilly.prototype.disable = function() {
this.isEnabled = false;
if ( this.isDragging ) {
this.dragEnd();
}
};
return Draggabilly;
} // end definition
// -------------------------- transport -------------------------- //
if ( typeof define === 'function' && define.amd ) {
// AMD
define( [
'classie/classie',
'eventEmitter/EventEmitter',
'eventie/eventie',
'get-style-property/get-style-property',
'get-size/get-size'
],
draggabillyDefinition );
} else {
// browser global
window.Draggabilly = draggabillyDefinition(
window.classie,
window.EventEmitter,
window.eventie,
window.getStyleProperty,
window.getSize
);
}
})( window );
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment