546 lines
18 KiB
JavaScript
546 lines
18 KiB
JavaScript
// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
|
|
//
|
|
// Element.Class part Copyright (c) 2005 by Rick Olson
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining
|
|
// a copy of this software and associated documentation files (the
|
|
// "Software"), to deal in the Software without restriction, including
|
|
// without limitation the rights to use, copy, modify, merge, publish,
|
|
// distribute, sublicense, and/or sell copies of the Software, and to
|
|
// permit persons to whom the Software is furnished to do so, subject to
|
|
// the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be
|
|
// included in all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
var Droppables = {
|
|
drops: false,
|
|
|
|
remove: function(element) {
|
|
for(var i = 0; i < this.drops.length; i++)
|
|
if(this.drops[i].element == element)
|
|
this.drops.splice(i,1);
|
|
},
|
|
|
|
add: function(element) {
|
|
element = $(element);
|
|
var options = Object.extend({
|
|
greedy: true,
|
|
hoverclass: null
|
|
}, arguments[1] || {});
|
|
|
|
// cache containers
|
|
if(options.containment) {
|
|
options._containers = new Array();
|
|
var containment = options.containment;
|
|
if((typeof containment == 'object') &&
|
|
(containment.constructor == Array)) {
|
|
for(var i=0; i<containment.length; i++)
|
|
options._containers.push($(containment[i]));
|
|
} else {
|
|
options._containers.push($(containment));
|
|
}
|
|
options._containers_length =
|
|
options._containers.length-1;
|
|
}
|
|
|
|
Element.makePositioned(element); // fix IE
|
|
|
|
options.element = element;
|
|
|
|
// activate the droppable
|
|
if(!this.drops) this.drops = [];
|
|
this.drops.push(options);
|
|
},
|
|
|
|
isContained: function(element, drop) {
|
|
var containers = drop._containers;
|
|
var parentNode = element.parentNode;
|
|
var i = drop._containers_length;
|
|
do { if(parentNode==containers[i]) return true; } while (i--);
|
|
return false;
|
|
},
|
|
|
|
isAffected: function(pX, pY, element, drop) {
|
|
return (
|
|
(drop.element!=element) &&
|
|
((!drop._containers) ||
|
|
this.isContained(element, drop)) &&
|
|
((!drop.accept) ||
|
|
(Element.Class.has_any(element, drop.accept))) &&
|
|
Position.within(drop.element, pX, pY) );
|
|
},
|
|
|
|
deactivate: function(drop) {
|
|
Element.Class.remove(drop.element, drop.hoverclass);
|
|
this.last_active = null;
|
|
},
|
|
|
|
activate: function(drop) {
|
|
if(this.last_active) this.deactivate(this.last_active);
|
|
if(drop.hoverclass)
|
|
Element.Class.add(drop.element, drop.hoverclass);
|
|
this.last_active = drop;
|
|
},
|
|
|
|
show: function(event, element) {
|
|
if(!this.drops) return;
|
|
var pX = Event.pointerX(event);
|
|
var pY = Event.pointerY(event);
|
|
Position.prepare();
|
|
|
|
var i = this.drops.length-1; do {
|
|
var drop = this.drops[i];
|
|
if(this.isAffected(pX, pY, element, drop)) {
|
|
if(drop.onHover)
|
|
drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));
|
|
if(drop.greedy) {
|
|
this.activate(drop);
|
|
return;
|
|
}
|
|
}
|
|
} while (i--);
|
|
},
|
|
|
|
fire: function(event, element) {
|
|
if(!this.last_active) return;
|
|
Position.prepare();
|
|
|
|
if (this.isAffected(Event.pointerX(event), Event.pointerY(event), element, this.last_active))
|
|
if (this.last_active.onDrop)
|
|
this.last_active.onDrop(element, this.last_active.element);
|
|
|
|
},
|
|
|
|
reset: function() {
|
|
if(this.last_active)
|
|
this.deactivate(this.last_active);
|
|
}
|
|
}
|
|
|
|
var Draggables = {
|
|
observers: new Array(),
|
|
addObserver: function(observer) {
|
|
this.observers.push(observer);
|
|
},
|
|
removeObserver: function(element) { // element instead of obsever fixes mem leaks
|
|
for(var i = 0; i < this.observers.length; i++)
|
|
if(this.observers[i].element && (this.observers[i].element == element))
|
|
this.observers.splice(i,1);
|
|
},
|
|
notify: function(eventName, draggable) { // 'onStart', 'onEnd'
|
|
for(var i = 0; i < this.observers.length; i++)
|
|
this.observers[i][eventName](draggable);
|
|
}
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
var Draggable = Class.create();
|
|
Draggable.prototype = {
|
|
initialize: function(element) {
|
|
var options = Object.extend({
|
|
handle: false,
|
|
starteffect: function(element) {
|
|
new Effect.Opacity(element, {duration:0.2, from:1.0, to:0.7});
|
|
},
|
|
reverteffect: function(element, top_offset, left_offset) {
|
|
var dur = Math.sqrt(Math.abs(top_offset^2)+Math.abs(left_offset^2))*0.02;
|
|
new Effect.MoveBy(element, -top_offset, -left_offset, {duration:dur});
|
|
},
|
|
endeffect: function(element) {
|
|
new Effect.Opacity(element, {duration:0.2, from:0.7, to:1.0});
|
|
},
|
|
zindex: 1000,
|
|
revert: false
|
|
}, arguments[1] || {});
|
|
|
|
this.element = $(element);
|
|
this.handle = options.handle ? $(options.handle) : this.element;
|
|
|
|
Element.makePositioned(this.element); // fix IE
|
|
|
|
this.offsetX = 0;
|
|
this.offsetY = 0;
|
|
this.originalLeft = this.currentLeft();
|
|
this.originalTop = this.currentTop();
|
|
this.originalX = this.element.offsetLeft;
|
|
this.originalY = this.element.offsetTop;
|
|
this.originalZ = parseInt(this.element.style.zIndex || "0");
|
|
|
|
this.options = options;
|
|
|
|
this.active = false;
|
|
this.dragging = false;
|
|
|
|
this.eventMouseDown = this.startDrag.bindAsEventListener(this);
|
|
this.eventMouseUp = this.endDrag.bindAsEventListener(this);
|
|
this.eventMouseMove = this.update.bindAsEventListener(this);
|
|
this.eventKeypress = this.keyPress.bindAsEventListener(this);
|
|
|
|
Event.observe(this.handle, "mousedown", this.eventMouseDown);
|
|
},
|
|
destroy: function() {
|
|
Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);
|
|
this.unregisterEvents();
|
|
},
|
|
registerEvents: function() {
|
|
if(this.active) return;
|
|
Event.observe(document, "mouseup", this.eventMouseUp);
|
|
Event.observe(document, "mousemove", this.eventMouseMove);
|
|
Event.observe(document, "keypress", this.eventKeypress);
|
|
},
|
|
unregisterEvents: function() {
|
|
if(!this.active) return;
|
|
Event.stopObserving(document, "mouseup", this.eventMouseUp);
|
|
Event.stopObserving(document, "mousemove", this.eventMouseMove);
|
|
Event.stopObserving(document, "keypress", this.eventKeypress);
|
|
},
|
|
currentLeft: function() {
|
|
return parseInt(this.element.style.left || '0');
|
|
},
|
|
currentTop: function() {
|
|
return parseInt(this.element.style.top || '0')
|
|
},
|
|
startDrag: function(event) {
|
|
if(Event.isLeftClick(event)) {
|
|
this.registerEvents();
|
|
this.active = true;
|
|
var pointer = [Event.pointerX(event), Event.pointerY(event)];
|
|
var offsets = Position.cumulativeOffset(this.element);
|
|
this.offsetX = (pointer[0] - offsets[0]);
|
|
this.offsetY = (pointer[1] - offsets[1]);
|
|
Event.stop(event);
|
|
}
|
|
},
|
|
finishDrag: function(event, success) {
|
|
this.unregisterEvents();
|
|
|
|
this.active = false;
|
|
this.dragging = false;
|
|
|
|
if(this.options.ghosting) {
|
|
Position.relativize(this.element);
|
|
Element.remove(this._clone);
|
|
this._clone = null;
|
|
}
|
|
|
|
if(success) Droppables.fire(event, this.element);
|
|
Draggables.notify('onEnd', this);
|
|
|
|
var revert = this.options.revert;
|
|
if(revert && typeof revert == 'function') revert = revert(this.element);
|
|
|
|
if(revert && this.options.reverteffect) {
|
|
this.options.reverteffect(this.element,
|
|
this.currentTop()-this.originalTop,
|
|
this.currentLeft()-this.originalLeft);
|
|
} else {
|
|
this.originalLeft = this.currentLeft();
|
|
this.originalTop = this.currentTop();
|
|
}
|
|
|
|
this.element.style.zIndex = this.originalZ;
|
|
|
|
if(this.options.endeffect)
|
|
this.options.endeffect(this.element);
|
|
|
|
|
|
Droppables.reset();
|
|
},
|
|
keyPress: function(event) {
|
|
if(this.active) {
|
|
if(event.keyCode==Event.KEY_ESC) {
|
|
this.finishDrag(event, false);
|
|
Event.stop(event);
|
|
}
|
|
}
|
|
},
|
|
endDrag: function(event) {
|
|
if(this.active && this.dragging) {
|
|
this.finishDrag(event, true);
|
|
Event.stop(event);
|
|
}
|
|
this.active = false;
|
|
this.dragging = false;
|
|
},
|
|
draw: function(event) {
|
|
var pointer = [Event.pointerX(event), Event.pointerY(event)];
|
|
var offsets = Position.cumulativeOffset(this.element);
|
|
offsets[0] -= this.currentLeft();
|
|
offsets[1] -= this.currentTop();
|
|
var style = this.element.style;
|
|
if((!this.options.constraint) || (this.options.constraint=='horizontal'))
|
|
style.left = (pointer[0] - offsets[0] - this.offsetX) + "px";
|
|
if((!this.options.constraint) || (this.options.constraint=='vertical'))
|
|
style.top = (pointer[1] - offsets[1] - this.offsetY) + "px";
|
|
if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering
|
|
},
|
|
update: function(event) {
|
|
if(this.active) {
|
|
if(!this.dragging) {
|
|
var style = this.element.style;
|
|
this.dragging = true;
|
|
if(style.position=="") style.position = "relative";
|
|
style.zIndex = this.options.zindex;
|
|
|
|
if(this.options.ghosting) {
|
|
this._clone = this.element.cloneNode(true);
|
|
Position.absolutize(this.element);
|
|
this.element.parentNode.insertBefore(this._clone, this.element);
|
|
}
|
|
|
|
Draggables.notify('onStart', this);
|
|
if(this.options.starteffect) this.options.starteffect(this.element);
|
|
}
|
|
|
|
Droppables.show(event, this.element);
|
|
this.draw(event);
|
|
if(this.options.change) this.options.change(this);
|
|
|
|
// fix AppleWebKit rendering
|
|
if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);
|
|
|
|
Event.stop(event);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
var SortableObserver = Class.create();
|
|
SortableObserver.prototype = {
|
|
initialize: function(element, observer) {
|
|
this.element = $(element);
|
|
this.observer = observer;
|
|
this.lastValue = Sortable.serialize(this.element);
|
|
},
|
|
onStart: function() {
|
|
this.lastValue = Sortable.serialize(this.element);
|
|
},
|
|
onEnd: function() {
|
|
Sortable.unmark();
|
|
if(this.lastValue != Sortable.serialize(this.element))
|
|
this.observer(this.element)
|
|
}
|
|
}
|
|
|
|
var Sortable = {
|
|
sortables: new Array(),
|
|
options: function(element){
|
|
element = $(element);
|
|
for(var i=0;i<this.sortables.length;i++)
|
|
if(this.sortables[i].element == element)
|
|
return this.sortables[i];
|
|
return null;
|
|
},
|
|
destroy: function(element){
|
|
element = $(element);
|
|
for(var i=0;i<this.sortables.length;i++) {
|
|
if(this.sortables[i].element == element) {
|
|
var s = this.sortables[i];
|
|
Draggables.removeObserver(s.element);
|
|
for(var j=0;j<s.droppables.length;j++)
|
|
Droppables.remove(s.droppables[j]);
|
|
for(j=0;j<s.draggables.length;j++)
|
|
s.draggables[j].destroy();
|
|
this.sortables.splice(i,1);
|
|
}
|
|
}
|
|
},
|
|
create: function(element) {
|
|
element = $(element);
|
|
var options = Object.extend({
|
|
element: element,
|
|
tag: 'li', // assumes li children, override with tag: 'tagname'
|
|
dropOnEmpty: false,
|
|
tree: false, // fixme: unimplemented
|
|
overlap: 'vertical', // one of 'vertical', 'horizontal'
|
|
constraint: 'vertical', // one of 'vertical', 'horizontal', false
|
|
containment: element, // also takes array of elements (or id's); or false
|
|
handle: false, // or a CSS class
|
|
only: false,
|
|
hoverclass: null,
|
|
ghosting: false,
|
|
onChange: function() {},
|
|
onUpdate: function() {}
|
|
}, arguments[1] || {});
|
|
|
|
// clear any old sortable with same element
|
|
this.destroy(element);
|
|
|
|
// build options for the draggables
|
|
var options_for_draggable = {
|
|
revert: true,
|
|
ghosting: options.ghosting,
|
|
constraint: options.constraint,
|
|
handle: handle };
|
|
|
|
if(options.starteffect)
|
|
options_for_draggable.starteffect = options.starteffect;
|
|
|
|
if(options.reverteffect)
|
|
options_for_draggable.reverteffect = options.reverteffect;
|
|
else
|
|
if(options.ghosting) options_for_draggable.reverteffect = function(element) {
|
|
element.style.top = 0;
|
|
element.style.left = 0;
|
|
};
|
|
|
|
if(options.endeffect)
|
|
options_for_draggable.endeffect = options.endeffect;
|
|
|
|
if(options.zindex)
|
|
options_for_draggable.zindex = options.zindex;
|
|
|
|
// build options for the droppables
|
|
var options_for_droppable = {
|
|
overlap: options.overlap,
|
|
containment: options.containment,
|
|
hoverclass: options.hoverclass,
|
|
onHover: Sortable.onHover,
|
|
greedy: !options.dropOnEmpty
|
|
}
|
|
|
|
// fix for gecko engine
|
|
Element.cleanWhitespace(element);
|
|
|
|
options.draggables = [];
|
|
options.droppables = [];
|
|
|
|
// make it so
|
|
|
|
// drop on empty handling
|
|
if(options.dropOnEmpty) {
|
|
Droppables.add(element,
|
|
{containment: options.containment, onHover: Sortable.onEmptyHover, greedy: false});
|
|
options.droppables.push(element);
|
|
}
|
|
|
|
var elements = this.findElements(element, options);
|
|
if(elements) {
|
|
for (var i = 0; i < elements.length; i++) {
|
|
// handles are per-draggable
|
|
var handle = options.handle ?
|
|
Element.Class.childrenWith(elements[i], options.handle)[0] : elements[i];
|
|
options.draggables.push(new Draggable(elements[i], Object.extend(options_for_draggable, { handle: handle })));
|
|
Droppables.add(elements[i], options_for_droppable);
|
|
|
|
options.droppables.push(elements[i]);
|
|
}
|
|
}
|
|
|
|
// keep reference
|
|
this.sortables.push(options);
|
|
|
|
// for onupdate
|
|
Draggables.addObserver(new SortableObserver(element, options.onUpdate));
|
|
|
|
},
|
|
|
|
// return all suitable-for-sortable elements in a guaranteed order
|
|
findElements: function(element, options) {
|
|
if(!element.hasChildNodes()) return null;
|
|
var elements = [];
|
|
var children = element.childNodes;
|
|
for(var i = 0; i<children.length; i++) {
|
|
if(children[i].tagName && children[i].tagName==options.tag.toUpperCase() &&
|
|
(!options.only || (Element.Class.has(children[i], options.only))))
|
|
elements.push(children[i]);
|
|
if(options.tree) {
|
|
var grandchildren = this.findElements(children[i], options);
|
|
if(grandchildren) elements.push(grandchildren);
|
|
}
|
|
}
|
|
|
|
return (elements.length>0 ? elements.flatten() : null);
|
|
},
|
|
|
|
onHover: function(element, dropon, overlap) {
|
|
if(overlap>0.5) {
|
|
Sortable.mark(dropon, 'before');
|
|
if(dropon.previousSibling != element) {
|
|
var oldParentNode = element.parentNode;
|
|
element.style.visibility = "hidden"; // fix gecko rendering
|
|
dropon.parentNode.insertBefore(element, dropon);
|
|
if(dropon.parentNode!=oldParentNode)
|
|
Sortable.options(oldParentNode).onChange(element);
|
|
Sortable.options(dropon.parentNode).onChange(element);
|
|
}
|
|
} else {
|
|
Sortable.mark(dropon, 'after');
|
|
var nextElement = dropon.nextSibling || null;
|
|
if(nextElement != element) {
|
|
var oldParentNode = element.parentNode;
|
|
element.style.visibility = "hidden"; // fix gecko rendering
|
|
dropon.parentNode.insertBefore(element, nextElement);
|
|
if(dropon.parentNode!=oldParentNode)
|
|
Sortable.options(oldParentNode).onChange(element);
|
|
Sortable.options(dropon.parentNode).onChange(element);
|
|
}
|
|
}
|
|
},
|
|
|
|
onEmptyHover: function(element, dropon) {
|
|
if(element.parentNode!=dropon) {
|
|
dropon.appendChild(element);
|
|
}
|
|
},
|
|
|
|
unmark: function() {
|
|
if(Sortable._marker) Element.hide(Sortable._marker);
|
|
},
|
|
|
|
mark: function(dropon, position) {
|
|
// mark on ghosting only
|
|
var sortable = Sortable.options(dropon.parentNode);
|
|
if(sortable && !sortable.ghosting) return;
|
|
|
|
if(!Sortable._marker) {
|
|
Sortable._marker = $('dropmarker') || document.createElement('DIV');
|
|
Element.hide(Sortable._marker);
|
|
Element.Class.add(Sortable._marker, 'dropmarker');
|
|
Sortable._marker.style.position = 'absolute';
|
|
document.getElementsByTagName("body").item(0).appendChild(Sortable._marker);
|
|
}
|
|
var offsets = Position.cumulativeOffset(dropon);
|
|
Sortable._marker.style.top = offsets[1] + 'px';
|
|
if(position=='after') Sortable._marker.style.top = (offsets[1]+dropon.clientHeight) + 'px';
|
|
Sortable._marker.style.left = offsets[0] + 'px';
|
|
Element.show(Sortable._marker);
|
|
},
|
|
|
|
serialize: function(element) {
|
|
element = $(element);
|
|
var sortableOptions = this.options(element);
|
|
var options = Object.extend({
|
|
tag: sortableOptions.tag,
|
|
only: sortableOptions.only,
|
|
name: element.id
|
|
}, arguments[1] || {});
|
|
|
|
var items = $(element).childNodes;
|
|
var queryComponents = new Array();
|
|
|
|
for(var i=0; i<items.length; i++)
|
|
if(items[i].tagName && items[i].tagName==options.tag.toUpperCase() &&
|
|
(!options.only || (Element.Class.has(items[i], options.only))))
|
|
queryComponents.push(
|
|
encodeURIComponent(options.name) + "[]=" +
|
|
encodeURIComponent(items[i].id.split("_")[1]));
|
|
|
|
return queryComponents.join("&");
|
|
}
|
|
}
|