MyCyma

// Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)

// script.aculo.us is freely distributable under the terms of an MIT-style license.

// For details, see the script.aculo.us web site: http://script.aculo.us/

options._containers.push($(containment));

}

}

if(options.accept) options.accept = [options.accept].flatten();

Element.makePositioned(element); // fix IE

this.drops.push(options);

},

findDeepestChild: function(drops) {

deepest = drops[0];

for (i = 1; i < drops.length; ++i)

if (Element.isParent(drops[i].element, deepest.element))

deepest = drops[i];

return deepest;

},

isContained: function(element, drop) {

var containmentNode;

if(drop.tree) {

} else {

containmentNode = element.parentNode;

}

return drop._containers.detect(function(c) { return containmentNode == c });

},

isAffected: function(point, element, drop) {

return (

(drop.element!=element) &&

((!drop._containers) ||

this.isContained(element, drop)) &&

((!drop.accept) ||

function(v) { return drop.accept.include(v) } ) )) &&

Position.within(drop.element, point[0], point[1]) );

},

show: function(point, element) {

if(!this.drops.length) return;

var drop, affected = [];

this.drops.each( function(drop) {

if(Droppables.isAffected(point, element, drop))

affected.push(drop);

});

if(affected.length>0)

drop = Droppables.findDeepestChild(affected);

Position.within(drop.element, point[0], point[1]);

if(drop.onHover)

drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));

if (drop != this.last_active) Droppables.activate(drop);

}

},

if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active))

if (this.last_active.onDrop) {

}

},

if(this.last_active)

this.deactivate(this.last_active);

}

var Draggables = {

drags: [],

observers: [],

register: function(draggable) {

if(this.drags.length == 0) {

this.eventMouseUp = this.endDrag.bindAsEventListener(this);

this.eventMouseMove = this.updateDrag.bindAsEventListener(this);

this.eventKeypress = this.keyPress.bindAsEventListener(this);

Event.observe(document, "mouseup", this.eventMouseUp);

Event.observe(document, "mousemove", this.eventMouseMove);

Event.observe(document, "keypress", this.eventKeypress);

}

this.drags.push(draggable);

},

unregister: function(draggable) {

this.drags = this.drags.reject(function(d) { return d==draggable });

if(this.drags.length == 0) {

Event.stopObserving(document, "keypress", this.eventKeypress);

}

},

activate: function(draggable) {

} else {

window.focus(); // allows keypress events if window isn't currently focused, fails for Safari

this.activeDraggable = draggable;

}

},

deactivate: function() {

this.activeDraggable = null;

},

updateDrag: function(event) {

if(!this.activeDraggable) return;

var pointer = [Event.pointerX(event), Event.pointerY(event)];

// the same coordinates, prevent needless redrawing (moz bug?)

if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return;

this._lastPointer = pointer;

this.activeDraggable.updateDrag(event, pointer);

},

endDrag: function(event) {

}

if(!this.activeDraggable) return;

this._lastPointer = null;

this.activeDraggable.endDrag(event);

this.activeDraggable = null;

},

keyPress: function(event) {

if(this.activeDraggable)

this.activeDraggable.keyPress(event);

},

addObserver: function(observer) {

this.observers.push(observer);

this._cacheObserverCallbacks();

},

removeObserver: function(element) { // element instead of observer fixes mem leaks

this.observers = this.observers.reject( function(o) { return o.element==element });

this._cacheObserverCallbacks();

},

notify: function(eventName, draggable, event) { // 'onStart', 'onEnd', 'onDrag'

if(this[eventName+'Count'] > 0)

this.observers.each( function(o) {

});

if(draggable.options[eventName]) draggable.options[eventName](draggable, event);

},

_cacheObserverCallbacks: function() {

['onStart','onEnd','onDrag'].each( function(eventName) {

Draggables[eventName+'Count'] = Draggables.observers.select(

).length;

});

}

/*--------------------------------------------------------------------------*/

},

endeffect: function(element) {

var toOpacity = Object.isNumber(element._opacity) ? element._opacity : 1.0;

queue: {scope:'_draggable', position:'end'},

}

},

zindex: 1000,

revert: false,

snap: false, // false, or xy or [x,y] or function(x,y){ return [x,y] }

delay: 0

};

if(!arguments[1] || Object.isUndefined(arguments[1].endeffect))

Object.extend(defaults, {

starteffect: function(element) {

element._opacity = Element.getOpacity(element);

Draggable._dragging[element] = true;

}

});

var options = Object.extend(defaults, arguments[1] || { });

this.element = $(element);

if(options.handle && Object.isString(options.handle))

this.handle = this.element.down('.'+options.handle, 0);

if(!this.handle) this.handle = $(options.handle);

if(!this.handle) this.handle = this.element;

if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) {

options.scroll = $(options.scroll);

this._isScrollChild = Element.childOf(this.element, options.scroll);

}

this.options = options;

this.eventMouseDown = this.initDrag.bindAsEventListener(this);

Event.observe(this.handle, "mousedown", this.eventMouseDown);

Draggables.register(this);

},

destroy: function() {

Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);

Draggables.unregister(this);

},

currentDelta: function() {

return([

parseInt(Element.getStyle(this.element,'left') || '0'),

parseInt(Element.getStyle(this.element,'top') || '0')]);

},

initDrag: function(event) {

if(!Object.isUndefined(Draggable._dragging[this.element]) &&

Draggable._dragging[this.element]) return;

// abort on form elements, fixes a Firefox issue

var src = Event.element(event);

if((tag_name = src.tagName.toUpperCase()) && (

tag_name=='OPTION' ||

tag_name=='BUTTON' ||

tag_name=='TEXTAREA')) return;

var pointer = [Event.pointerX(event), Event.pointerY(event)];

var pos = Position.cumulativeOffset(this.element);

this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) });

Draggables.activate(this);

Event.stop(event);

}

},

startDrag: function(event) {

this.dragging = true;

if(!this.delta)

this.delta = this.currentDelta();

if(this.options.zindex) {

this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0);

this.element.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);

}

if(this.options.scroll) {

if (this.options.scroll == window) {

var where = this._getWindowScroll(this.options.scroll);

this.originalScrollTop = this.options.scroll.scrollTop;

}

}

Draggables.notify('onStart', this, event);

if(this.options.starteffect) this.options.starteffect(this.element);

},

updateDrag: function(event, pointer) {

if(!this.dragging) this.startDrag(event);

if(!this.options.quiet){

Position.prepare();

Droppables.show(pointer, this.element);

}

Draggables.notify('onDrag', this, event);

this.draw(pointer);

if(this.options.change) this.options.change(this);

if(this.options.scroll) {

this.stopScrolling();

var p;

if (this.options.scroll == window) {

with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; }

if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity);

this.startScrolling(speed);

}

// fix AppleWebKit rendering

if(Prototype.Browser.WebKit) window.scrollBy(0,0);

Event.stop(event);

},

finishDrag: function(event, success) {

this.dragging = false;

if(this.options.quiet){

Position.prepare();

var pointer = [Event.pointerX(event), Event.pointerY(event)];

}

if(this.options.ghosting) {

Position.relativize(this.element);

Element.remove(this._clone);

this._clone = null;

}

}

if(dropped && this.options.onDropped) this.options.onDropped(this.element);

Draggables.notify('onEnd', this, event);

var revert = this.options.revert;

if(revert && Object.isFunction(revert)) revert = revert(this.element);

var d = this.currentDelta();

if(revert && this.options.reverteffect) {

if (dropped == 0 || revert != 'failure')

if(this.options.zindex)

this.element.style.zIndex = this.originalZ;

this.options.endeffect(this.element);

Draggables.deactivate(this);

Droppables.reset();

},

keyPress: function(event) {

if(event.keyCode!=Event.KEY_ESC) return;

this.finishDrag(event, false);

Event.stop(event);

},

endDrag: function(event) {

if(!this.dragging) return;

this.stopScrolling();

this.finishDrag(event, true);

Event.stop(event);

},

draw: function(point) {

var pos = Position.cumulativeOffset(this.element);

if(this.options.ghosting) {

var r = Position.realOffset(this.element);

pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY;

}

var d = this.currentDelta();

pos[0] -= d[0]; pos[1] -= d[1];

if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) {

pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft;

pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop;

}

}.bind(this));

if(this.options.snap) {

if(Object.isFunction(this.options.snap)) {

p = this.options.snap(p[0],p[1],this);

} else {

if(Object.isArray(this.options.snap)) {

p = p.map( function(v, i) {

} else {

p = p.map( function(v) {

}

}}

var style = this.element.style;

if((!this.options.constraint) || (this.options.constraint=='horizontal'))

style.left = p[0] + "px";

if((!this.options.constraint) || (this.options.constraint=='vertical'))

style.top = p[1] + "px";

if(style.visibility=="hidden") style.visibility = ""; // fix gecko rendering

},

stopScrolling: function() {

if(this.scrollInterval) {

clearInterval(this.scrollInterval);

Draggables._lastScrollPointer = null;

}

},

startScrolling: function(speed) {

if(!(speed[0] || speed[1])) return;

this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed];

this.lastScrolled = new Date();

this.scrollInterval = setInterval(this.scroll.bind(this), 10);

},

scroll: function() {

var current = new Date();

var delta = current - this.lastScrolled;

this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000;

this.options.scroll.scrollTop += this.scrollSpeed[1] * delta / 1000;

}

Position.prepare();

Droppables.show(Draggables._lastPointer, this.element);

Draggables.notify('onDrag', this);

Draggables._lastScrollPointer[1] = 0;

this.draw(Draggables._lastScrollPointer);

}

if(this.options.change) this.options.change(this);

},

_getWindowScroll: function(w) {

var T, L, W, H;

with (w.document) {

H = documentElement.clientHeight;

} else {

W = body.offsetWidth;

}

}

return { top: T, left: L, width: W, height: H };

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))

var Sortable = {

SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/,

sortables: { },

_findRootElement: function(element) {

if(element.id && Sortable.sortables[element.id]) return element;

element = element.parentNode;

}

if(!element) return;

return Sortable.sortables[element.id];

},

destroy: function(element){

if(s) {

Draggables.removeObserver(s.element);

s.droppables.each(function(d){ Droppables.remove(d) });

s.draggables.invoke('destroy');

delete Sortable.sortables[s.element.id];

}

},

create: function(element) {

element = $(element);

element: element,

tag: 'li', // assumes li children, override with tag: 'tagname'

dropOnEmpty: false,

delay: 0,

hoverclass: null,

ghosting: false,

scroll: false,

scrollSensitivity: 20,

scrollSpeed: 15,

format: this.SERIALIZE_RULE,

// used for better initialization performance

elements: false,

handles: false,

onChange: Prototype.emptyFunction,

onUpdate: Prototype.emptyFunction

}, arguments[1] || { });

if(options.zindex)

options_for_draggable.zindex = options.zindex;

var options_for_droppable = {

overlap: options.overlap,

containment: options.containment,

tree: options.tree,

hoverclass: options.hoverclass,

onHover: Sortable.onHover

var options_for_tree = {

onHover: Sortable.onEmptyHover,

overlap: options.overlap,

containment: options.containment,

hoverclass: options.hoverclass

// fix for gecko engine

options.draggables = [];

options.droppables = [];

(options.elements || this.findElements(element, options) || []).each( function(e,i) {

var handle = options.handles ? $(options.handles[i]) :

options.draggables.push(

new Draggable(e, Object.extend(options_for_draggable, { handle: handle })));

Droppables.add(e, options_for_droppable);

if(options.tree) e.treeNode = element;

});

if(options.tree) {

(Sortable.findTreeElements(element, options) || []).each( function(e) {

Droppables.add(e, options_for_tree);

return Element.findChildren(

element, options.only, options.tree ? true : false, options.tag);

},

findTreeElements: function(element, options) {

return Element.findChildren(

element, options.only, options.tree ? true : false, options.treeTag);

var oldParentNode = element.parentNode;

element.style.visibility = "hidden"; // fix gecko rendering

dropon.parentNode.insertBefore(element, dropon);

Sortable.options(oldParentNode).onChange(element);

Sortable.options(dropon.parentNode).onChange(element);

}

var oldParentNode = element.parentNode;

element.style.visibility = "hidden"; // fix gecko rendering

dropon.parentNode.insertBefore(element, nextElement);

Sortable.options(oldParentNode).onChange(element);

Sortable.options(dropon.parentNode).onChange(element);

}

}

},

onEmptyHover: function(element, dropon, overlap) {

var oldParentNode = element.parentNode;

var droponOptions = Sortable.options(dropon);

if(!Element.isParent(dropon, element)) {

var index;

var children = Sortable.findElements(dropon, {tag: droponOptions.tag, only: droponOptions.only});

var child = null;

if(children) {

var offset = Element.offsetSize(dropon, droponOptions.overlap) * (1.0 - overlap);

for (index = 0; index < children.length; index += 1) {

if (offset - Element.offsetSize (children[index], droponOptions.overlap) >= 0) {

offset -= Element.offsetSize (children[index], droponOptions.overlap);

}

}

}

dropon.insertBefore(element, child);

Sortable.options(oldParentNode).onChange(element);

droponOptions.onChange(element);

}

mark: function(dropon, position) {

// mark on ghosting only

var sortable = Sortable.options(dropon.parentNode);

if(!Sortable._marker) {

($('dropmarker') || Element.extend(document.createElement('DIV'))).

hide().addClassName('dropmarker').setStyle({position:'absolute'});

document.getElementsByTagName("body").item(0).appendChild(Sortable._marker);

var offsets = Position.cumulativeOffset(dropon);

Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'});

if(position=='after')

Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'});

else

Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'});

Sortable._marker.show();

},

_tree: function(element, options, parent) {

var children = Sortable.findElements(element, options) || [];

for (var i = 0; i < children.length; ++i) {

var match = children[i].id.match(options.format);

if (!match) continue;

var child = {

id: encodeURIComponent(match ? match[1] : null),

element: element,

children: [],

position: parent.children.length,

container: $(children[i]).down(options.treeTag)

/* Get the element containing the children and recurse over it */

if (child.container)

parent.children.push (child);

}

},

tree: function(element) {

name: element.id,

format: sortableOptions.format

}, arguments[1] || { });

var root = {

id: null,

parent: null,

children: [],

container: element,

position: 0

return Sortable._tree(element, options, root);

},

sequence: function(element) {

element = $(element);

var options = Object.extend(this.options(element), arguments[1] || { });

return $(this.findElements(element, options) || []).map( function(item) {

return item.id.match(options.format) ? item.id.match(options.format)[1] : '';

});

setSequence: function(element, new_sequence) {

element = $(element);

var options = Object.extend(this.options(element), arguments[2] || { });

var nodeMap = { };

this.findElements(element, options).each( function(n) {

if (n.id.match(options.format))

nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode];

n.parentNode.removeChild(n);

});

new_sequence.each(function(ident) {

var n = nodeMap[ident];

if (n) {

}

});

},

serialize: function(element) {

element = $(element);

var options = Object.extend(Sortable.options(element), arguments[1] || { });

var name = encodeURIComponent(

(arguments[1] && arguments[1].name) ? arguments[1].name : element.id);

if (options.tree) {

return Sortable.tree(element, arguments[1]).children.map( function (item) {

encodeURIComponent(item.id)].concat(item.children.map(arguments.callee));

}).flatten().join('&');

} else {

}).join('&');

}

}

// Returns true if child is contained within element

Element.isParent = function(child, element) {

if (!child.parentNode || child == element) return false;

if (child.parentNode == element) return true;

return Element.isParent(child.parentNode, element);

if(!element.hasChildNodes()) return null;

tagName = tagName.toUpperCase();

if(only) only = [only].flatten();

});

return (elements.length>0 ? elements.flatten() : []);

Element.offsetSize = function (element, type) {

return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')];