-// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
-//
-// Element.Class part Copyright (c) 2005 by Rick Olson
-//
-// See scriptaculous.js for full license.
+// Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+// (c) 2005-2008 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz)
+//
+// 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/
-/*--------------------------------------------------------------------------*/
+if(Object.isUndefined(Effect))
+ throw("dragdrop.js requires including script.aculo.us' effects.js library");
var Droppables = {
drops: [],
remove: function(element) {
- this.drops = this.drops.reject(function(d) { return d.element==element });
+ this.drops = this.drops.reject(function(d) { return d.element==$(element) });
},
add: function(element) {
element = $(element);
var options = Object.extend({
greedy: true,
- hoverclass: null
- }, arguments[1] || {});
+ hoverclass: null,
+ tree: false
+ }, arguments[1] || { });
// cache containers
if(options.containment) {
options._containers = [];
var containment = options.containment;
- if((typeof containment == 'object') &&
- (containment.constructor == Array)) {
+ if(Object.isArray(containment)) {
containment.each( function(c) { options._containers.push($(c)) });
} else {
options._containers.push($(containment));
}
}
+ if(options.accept) options.accept = [options.accept].flatten();
+
Element.makePositioned(element); // fix IE
options.element = element;
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 parentNode = element.parentNode;
- return drop._containers.detect(function(c) { return parentNode == c });
+ var containmentNode;
+ if(drop.tree) {
+ containmentNode = element.treeNode;
+ } else {
+ containmentNode = element.parentNode;
+ }
+ return drop._containers.detect(function(c) { return containmentNode == c });
},
- isAffected: function(pX, pY, element, drop) {
+ isAffected: function(point, 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) );
+ (Element.classNames(element).detect(
+ function(v) { return drop.accept.include(v) } ) )) &&
+ Position.within(drop.element, point[0], point[1]) );
},
deactivate: function(drop) {
if(drop.hoverclass)
- Element.Class.remove(drop.element, drop.hoverclass);
+ Element.removeClassName(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);
+ Element.addClassName(drop.element, drop.hoverclass);
this.last_active = drop;
},
- show: function(event, element) {
+ show: function(point, element) {
if(!this.drops.length) return;
- var pX = Event.pointerX(event);
- var pY = Event.pointerY(event);
- Position.prepare();
+ var drop, affected = [];
- 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--);
-
- if(this.last_active) this.deactivate(this.last_active);
+ this.drops.each( function(drop) {
+ if(Droppables.isAffected(point, element, drop))
+ affected.push(drop);
+ });
+
+ if(affected.length>0)
+ drop = Droppables.findDeepestChild(affected);
+
+ if(this.last_active && this.last_active != drop) this.deactivate(this.last_active);
+ if (drop) {
+ 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);
+ }
},
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)
+ 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, event);
+ return true;
+ }
},
reset: function() {
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, "mouseup", this.eventMouseUp);
+ Event.stopObserving(document, "mousemove", this.eventMouseMove);
+ Event.stopObserving(document, "keypress", this.eventKeypress);
+ }
+ },
+
+ activate: function(draggable) {
+ if(draggable.options.delay) {
+ this._timeout = setTimeout(function() {
+ Draggables._timeout = null;
+ window.focus();
+ Draggables.activeDraggable = draggable;
+ }.bind(this), draggable.options.delay);
+ } 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)];
+ // Mozilla-based browsers fire successive mousemove events with
+ // 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._timeout) {
+ clearTimeout(this._timeout);
+ this._timeout = null;
+ }
+ 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.observers.push(observer);
+ this._cacheObserverCallbacks();
},
- removeObserver: function(element) { // element instead of obsever fixes mem leaks
+
+ 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) { // 'onStart', 'onEnd'
- this.observers.invoke(eventName, draggable);
+
+ notify: function(eventName, draggable, event) { // 'onStart', 'onEnd', 'onDrag'
+ if(this[eventName+'Count'] > 0)
+ this.observers.each( function(o) {
+ if(o[eventName]) o[eventName](eventName, draggable, event);
+ });
+ if(draggable.options[eventName]) draggable.options[eventName](draggable, event);
+ },
+
+ _cacheObserverCallbacks: function() {
+ ['onStart','onEnd','onDrag'].each( function(eventName) {
+ Draggables[eventName+'Count'] = Draggables.observers.select(
+ function(o) { return o[eventName]; }
+ ).length;
+ });
}
-}
+};
/*--------------------------------------------------------------------------*/
-var Draggable = Class.create();
-Draggable.prototype = {
+var Draggable = Class.create({
initialize: function(element) {
- var options = Object.extend({
+ var defaults = {
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});
+ new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur,
+ queue: {scope:'_draggable', position:'end'}
+ });
},
- endeffect: function(element) {
- new Effect.Opacity(element, {duration:0.2, from:0.7, to:1.0});
+ endeffect: function(element) {
+ var toOpacity = Object.isNumber(element._opacity) ? element._opacity : 1.0;
+ new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity,
+ queue: {scope:'_draggable', position:'end'},
+ afterFinish: function(){
+ Draggable._dragging[element] = false
+ }
+ });
},
zindex: 1000,
- revert: false
- }, arguments[1] || {});
+ revert: false,
+ quiet: false,
+ scroll: false,
+ scrollSensitivity: 20,
+ scrollSpeed: 15,
+ 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;
+ new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7});
+ }
+ });
+
+ 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);
- this.element = $(element);
- if(options.handle && (typeof options.handle == 'string'))
- this.handle = Element.Class.childrenWith(this.element, options.handle)[0];
-
if(!this.handle) this.handle = $(options.handle);
if(!this.handle) this.handle = this.element;
- Element.makePositioned(this.element); // fix IE
+ if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) {
+ options.scroll = $(options.scroll);
+ this._isScrollChild = Element.childOf(this.element, options.scroll);
+ }
- this.offsetX = 0;
- this.offsetY = 0;
- this.originalLeft = this.currentLeft();
- this.originalTop = this.currentTop();
- this.originalX = this.element.offsetLeft;
- this.originalY = this.element.offsetTop;
+ Element.makePositioned(this.element); // fix IE
- this.options = options;
+ this.options = options;
+ this.dragging = false;
- this.active = false;
- this.dragging = false;
+ this.eventMouseDown = this.initDrag.bindAsEventListener(this);
+ Event.observe(this.handle, "mousedown", this.eventMouseDown);
- this.eventMouseDown = this.startDrag.bindAsEventListener(this);
- this.eventMouseUp = this.endDrag.bindAsEventListener(this);
- this.eventMouseMove = this.update.bindAsEventListener(this);
- this.eventKeypress = this.keyPress.bindAsEventListener(this);
-
- this.registerEvents();
+ Draggables.register(this);
},
+
destroy: function() {
Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);
- this.unregisterEvents();
- },
- registerEvents: function() {
- Event.observe(document, "mouseup", this.eventMouseUp);
- Event.observe(document, "mousemove", this.eventMouseMove);
- Event.observe(document, "keypress", this.eventKeypress);
- Event.observe(this.handle, "mousedown", this.eventMouseDown);
+ Draggables.unregister(this);
},
- 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')
+
+ currentDelta: function() {
+ return([
+ parseInt(Element.getStyle(this.element,'left') || '0'),
+ parseInt(Element.getStyle(this.element,'top') || '0')]);
},
- startDrag: function(event) {
+
+ initDrag: function(event) {
+ if(!Object.isUndefined(Draggable._dragging[this.element]) &&
+ Draggable._dragging[this.element]) return;
if(Event.isLeftClick(event)) {
-
// abort on form elements, fixes a Firefox issue
var src = Event.element(event);
- if(src.tagName && (
- src.tagName=='INPUT' ||
- src.tagName=='SELECT' ||
- src.tagName=='BUTTON' ||
- src.tagName=='TEXTAREA')) return;
-
- // this.registerEvents();
- this.active = true;
+ if((tag_name = src.tagName.toUpperCase()) && (
+ tag_name=='INPUT' ||
+ tag_name=='SELECT' ||
+ tag_name=='OPTION' ||
+ tag_name=='BUTTON' ||
+ tag_name=='TEXTAREA')) return;
+
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]);
+ var pos = Position.cumulativeOffset(this.element);
+ this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) });
+
+ Draggables.activate(this);
Event.stop(event);
}
},
- finishDrag: function(event, success) {
- // this.unregisterEvents();
- this.active = false;
+ 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);
+ this._originallyAbsolute = (this.element.getStyle('position') == 'absolute');
+ if (!this._originallyAbsolute)
+ 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.originalScrollLeft = where.left;
+ this.originalScrollTop = where.top;
+ } else {
+ this.originalScrollLeft = this.options.scroll.scrollLeft;
+ 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 ]; }
+ } else {
+ p = Position.page(this.options.scroll);
+ p[0] += this.options.scroll.scrollLeft + Position.deltaX;
+ p[1] += this.options.scroll.scrollTop + Position.deltaY;
+ p.push(p[0]+this.options.scroll.offsetWidth);
+ p.push(p[1]+this.options.scroll.offsetHeight);
+ }
+ var speed = [0,0];
+ if(pointer[0] < (p[0]+this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[0]+this.options.scrollSensitivity);
+ if(pointer[1] < (p[1]+this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[1]+this.options.scrollSensitivity);
+ if(pointer[0] > (p[2]-this.options.scrollSensitivity)) speed[0] = pointer[0]-(p[2]-this.options.scrollSensitivity);
+ 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)];
+ Droppables.show(pointer, this.element);
+ }
+
if(this.options.ghosting) {
- Position.relativize(this.element);
+ if (!this._originallyAbsolute)
+ Position.relativize(this.element);
+ delete this._originallyAbsolute;
Element.remove(this._clone);
this._clone = null;
}
- if(success) Droppables.fire(event, this.element);
- Draggables.notify('onEnd', this);
+ var dropped = false;
+ if(success) {
+ dropped = Droppables.fire(event, this.element);
+ if (!dropped) dropped = false;
+ }
+ if(dropped && this.options.onDropped) this.options.onDropped(this.element);
+ Draggables.notify('onEnd', this, event);
var revert = this.options.revert;
- if(revert && typeof revert == 'function') revert = revert(this.element);
+ if(revert && Object.isFunction(revert)) revert = revert(this.element);
+ var d = this.currentDelta();
if(revert && this.options.reverteffect) {
- this.options.reverteffect(this.element,
- this.currentTop()-this.originalTop,
- this.currentLeft()-this.originalLeft);
+ if (dropped == 0 || revert != 'failure')
+ this.options.reverteffect(this.element,
+ d[1]-this.delta[1], d[0]-this.delta[0]);
} else {
- this.originalLeft = this.currentLeft();
- this.originalTop = this.currentTop();
+ this.delta = d;
}
if(this.options.zindex)
this.element.style.zIndex = this.originalZ;
- if(this.options.endeffect)
+ if(this.options.endeffect)
this.options.endeffect(this.element);
-
+ Draggables.deactivate(this);
Droppables.reset();
},
+
keyPress: function(event) {
- if(this.active) {
- if(event.keyCode==Event.KEY_ESC) {
- this.finishDrag(event, false);
- Event.stop(event);
- }
- }
+ if(event.keyCode!=Event.KEY_ESC) return;
+ 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;
+ if(!this.dragging) return;
+ this.stopScrolling();
+ this.finishDrag(event, true);
+ Event.stop(event);
},
- 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();
+
+ 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;
+ }
+
+ var p = [0,1].map(function(i){
+ return (point[i]-pos[i]-this.offset[i])
+ }.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) {
+ return (v/this.options.snap[i]).round()*this.options.snap[i] }.bind(this));
+ } else {
+ p = p.map( function(v) {
+ return (v/this.options.snap).round()*this.options.snap }.bind(this));
+ }
+ }}
+
var style = this.element.style;
if((!this.options.constraint) || (this.options.constraint=='horizontal'))
- style.left = (pointer[0] - offsets[0] - this.offsetX) + "px";
+ style.left = p[0] + "px";
if((!this.options.constraint) || (this.options.constraint=='vertical'))
- style.top = (pointer[1] - offsets[1] - this.offsetY) + "px";
+ style.top = p[1] + "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(Element.getStyle(this.element,'position')=='')
- style.position = "relative";
-
- if(this.options.zindex) {
- this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0);
- 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);
- }
+ stopScrolling: function() {
+ if(this.scrollInterval) {
+ clearInterval(this.scrollInterval);
+ this.scrollInterval = null;
+ 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);
+ },
- Draggables.notify('onStart', this);
- if(this.options.starteffect) this.options.starteffect(this.element);
+ scroll: function() {
+ var current = new Date();
+ var delta = current - this.lastScrolled;
+ this.lastScrolled = current;
+ if(this.options.scroll == window) {
+ with (this._getWindowScroll(this.options.scroll)) {
+ if (this.scrollSpeed[0] || this.scrollSpeed[1]) {
+ var d = delta / 1000;
+ this.options.scroll.scrollTo( left + d*this.scrollSpeed[0], top + d*this.scrollSpeed[1] );
+ }
}
+ } else {
+ this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000;
+ this.options.scroll.scrollTop += this.scrollSpeed[1] * delta / 1000;
+ }
- Droppables.show(event, this.element);
- this.draw(event);
- if(this.options.change) this.options.change(this);
+ Position.prepare();
+ Droppables.show(Draggables._lastPointer, this.element);
+ Draggables.notify('onDrag', this);
+ if (this._isScrollChild) {
+ Draggables._lastScrollPointer = Draggables._lastScrollPointer || $A(Draggables._lastPointer);
+ Draggables._lastScrollPointer[0] += this.scrollSpeed[0] * delta / 1000;
+ Draggables._lastScrollPointer[1] += this.scrollSpeed[1] * delta / 1000;
+ if (Draggables._lastScrollPointer[0] < 0)
+ Draggables._lastScrollPointer[0] = 0;
+ if (Draggables._lastScrollPointer[1] < 0)
+ Draggables._lastScrollPointer[1] = 0;
+ this.draw(Draggables._lastScrollPointer);
+ }
- // fix AppleWebKit rendering
- if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);
+ if(this.options.change) this.options.change(this);
+ },
- Event.stop(event);
- }
+ _getWindowScroll: function(w) {
+ var T, L, W, H;
+ with (w.document) {
+ if (w.document.documentElement && documentElement.scrollTop) {
+ T = documentElement.scrollTop;
+ L = documentElement.scrollLeft;
+ } else if (w.document.body) {
+ T = body.scrollTop;
+ L = body.scrollLeft;
+ }
+ if (w.innerWidth) {
+ W = w.innerWidth;
+ H = w.innerHeight;
+ } else if (w.document.documentElement && documentElement.clientWidth) {
+ W = documentElement.clientWidth;
+ H = documentElement.clientHeight;
+ } else {
+ W = body.offsetWidth;
+ H = body.offsetHeight;
+ }
+ }
+ return { top: T, left: L, width: W, height: H };
}
-}
+});
+
+Draggable._dragging = { };
/*--------------------------------------------------------------------------*/
-var SortableObserver = Class.create();
-SortableObserver.prototype = {
+var SortableObserver = Class.create({
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 = $(element);
- return this.sortables.detect(function(s) { return s.element == element });
+ SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/,
+
+ sortables: { },
+
+ _findRootElement: function(element) {
+ while (element.tagName.toUpperCase() != "BODY") {
+ if(element.id && Sortable.sortables[element.id]) return element;
+ element = element.parentNode;
+ }
+ },
+
+ options: function(element) {
+ element = Sortable._findRootElement($(element));
+ if(!element) return;
+ return Sortable.sortables[element.id];
},
+
destroy: function(element){
element = $(element);
- this.sortables.findAll(function(s) { return s.element == element }).each(function(s){
+ var s = Sortable.sortables[element.id];
+
+ if(s) {
Draggables.removeObserver(s.element);
s.droppables.each(function(d){ Droppables.remove(d) });
s.draggables.invoke('destroy');
- });
- this.sortables = this.sortables.reject(function(s) { return s.element == element });
+
+ delete Sortable.sortables[s.element.id];
+ }
},
+
create: function(element) {
element = $(element);
- var options = Object.extend({
+ var options = Object.extend({
element: element,
tag: 'li', // assumes li children, override with tag: 'tagname'
dropOnEmpty: false,
- tree: false, // fixme: unimplemented
+ tree: false,
+ treeTag: 'ul',
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,
+ delay: 0,
hoverclass: null,
ghosting: false,
- format: null,
+ quiet: false,
+ scroll: false,
+ scrollSensitivity: 20,
+ scrollSpeed: 15,
+ format: this.SERIALIZE_RULE,
+
+ // these take arrays of elements or ids and can be
+ // used for better initialization performance
+ elements: false,
+ handles: false,
+
onChange: Prototype.emptyFunction,
onUpdate: Prototype.emptyFunction
- }, arguments[1] || {});
+ }, arguments[1] || { });
// clear any old sortable with same element
this.destroy(element);
// build options for the draggables
var options_for_draggable = {
revert: true,
+ quiet: options.quiet,
+ scroll: options.scroll,
+ scrollSpeed: options.scrollSpeed,
+ scrollSensitivity: options.scrollSensitivity,
+ delay: options.delay,
ghosting: options.ghosting,
constraint: options.constraint,
handle: options.handle };
if(options.zindex)
options_for_draggable.zindex = options.zindex;
- // build options for the droppables
+ // build options for the droppables
var options_for_droppable = {
overlap: options.overlap,
containment: options.containment,
+ tree: options.tree,
hoverclass: options.hoverclass,
- onHover: Sortable.onHover,
- greedy: !options.dropOnEmpty
- }
+ onHover: Sortable.onHover
+ };
+
+ var options_for_tree = {
+ onHover: Sortable.onEmptyHover,
+ overlap: options.overlap,
+ containment: options.containment,
+ hoverclass: options.hoverclass
+ };
// fix for gecko engine
- Element.cleanWhitespace(element);
+ 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});
+ if(options.dropOnEmpty || options.tree) {
+ Droppables.add(element, options_for_tree);
options.droppables.push(element);
}
- (this.findElements(element, options) || []).each( function(e) {
- // handles are per-draggable
- var handle = options.handle ?
- Element.Class.childrenWith(e, options.handle)[0] : e;
+ (options.elements || this.findElements(element, options) || []).each( function(e,i) {
+ var handle = options.handles ? $(options.handles[i]) :
+ (options.handle ? $(e).select('.' + options.handle)[0] : e);
options.draggables.push(
new Draggable(e, Object.extend(options_for_draggable, { handle: handle })));
Droppables.add(e, options_for_droppable);
- options.droppables.push(e);
+ if(options.tree) e.treeNode = element;
+ options.droppables.push(e);
});
+ if(options.tree) {
+ (Sortable.findTreeElements(element, options) || []).each( function(e) {
+ Droppables.add(e, options_for_tree);
+ e.treeNode = element;
+ options.droppables.push(e);
+ });
+ }
+
// keep reference
- this.sortables.push(options);
+ this.sortables[element.id] = 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 = [];
- $A(element.childNodes).each( function(e) {
- if(e.tagName && e.tagName==options.tag.toUpperCase() &&
- (!options.only || (Element.Class.has(e, options.only))))
- elements.push(e);
- if(options.tree) {
- var grandchildren = this.findElements(e, options);
- if(grandchildren) elements.push(grandchildren);
- }
- });
+ return Element.findChildren(
+ element, options.only, options.tree ? true : false, options.tag);
+ },
- return (elements.length>0 ? elements.flatten() : null);
+ findTreeElements: function(element, options) {
+ return Element.findChildren(
+ element, options.only, options.tree ? true : false, options.treeTag);
},
onHover: function(element, dropon, overlap) {
- if(overlap>0.5) {
+ if(Element.isParent(dropon, element)) return;
+
+ if(overlap > .33 && overlap < .66 && Sortable.options(dropon).tree) {
+ return;
+ } else 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)
+ if(dropon.parentNode!=oldParentNode)
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);
- if(dropon.parentNode!=oldParentNode)
+ if(dropon.parentNode!=oldParentNode)
Sortable.options(oldParentNode).onChange(element);
Sortable.options(dropon.parentNode).onChange(element);
}
}
},
- onEmptyHover: function(element, dropon) {
- if(element.parentNode!=dropon) {
- var oldParentNode = element.parentNode;
- dropon.appendChild(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);
+ } else if (offset - (Element.offsetSize (children[index], droponOptions.overlap) / 2) >= 0) {
+ child = index + 1 < children.length ? children[index + 1] : null;
+ break;
+ } else {
+ child = children[index];
+ break;
+ }
+ }
+ }
+
+ dropon.insertBefore(element, child);
+
Sortable.options(oldParentNode).onChange(element);
- Sortable.options(dropon).onChange(element);
+ droponOptions.onChange(element);
}
},
unmark: function() {
- if(Sortable._marker) Element.hide(Sortable._marker);
+ if(Sortable._marker) Sortable._marker.hide();
},
mark: function(dropon, position) {
// mark on ghosting only
var sortable = Sortable.options(dropon.parentNode);
- if(sortable && !sortable.ghosting) return;
+ if(sortable && !sortable.ghosting) return;
if(!Sortable._marker) {
- Sortable._marker = $('dropmarker') || document.createElement('DIV');
- Element.hide(Sortable._marker);
- Element.Class.add(Sortable._marker, 'dropmarker');
- Sortable._marker.style.position = 'absolute';
+ Sortable._marker =
+ ($('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.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);
+ Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'});
+
+ if(position=='after')
+ if(sortable.overlap == 'horizontal')
+ Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'});
+ else
+ Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'});
+
+ Sortable._marker.show();
},
- serialize: function(element) {
+ _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,
+ parent: parent,
+ children: [],
+ position: parent.children.length,
+ container: $(children[i]).down(options.treeTag)
+ };
+
+ /* Get the element containing the children and recurse over it */
+ if (child.container)
+ this._tree(child.container, options, child);
+
+ parent.children.push (child);
+ }
+
+ return parent;
+ },
+
+ tree: function(element) {
element = $(element);
var sortableOptions = this.options(element);
var options = Object.extend({
- tag: sortableOptions.tag,
+ tag: sortableOptions.tag,
+ treeTag: sortableOptions.treeTag,
only: sortableOptions.only,
name: element.id,
- format: sortableOptions.format || /^[^_]*_(.*)$/
- }, arguments[1] || {});
- return $(this.findElements(element, options) || []).collect( function(item) {
- return (encodeURIComponent(options.name) + "[]=" +
- encodeURIComponent(item.id.match(options.format) ? item.id.match(options.format)[1] : ''));
- }).join("&");
+ format: sortableOptions.format
+ }, arguments[1] || { });
+
+ var root = {
+ id: null,
+ parent: null,
+ children: [],
+ container: element,
+ position: 0
+ };
+
+ return Sortable._tree(element, options, root);
+ },
+
+ /* Construct a [i] index for a particular node */
+ _constructIndex: function(node) {
+ var index = '';
+ do {
+ if (node.id) index = '[' + node.position + ']' + index;
+ } while ((node = node.parent) != null);
+ return index;
+ },
+
+ 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) {
+ n[1].appendChild(n[0]);
+ delete nodeMap[ident];
+ }
+ });
+ },
+
+ 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) {
+ return [name + Sortable._constructIndex(item) + "[id]=" +
+ encodeURIComponent(item.id)].concat(item.children.map(arguments.callee));
+ }).flatten().join('&');
+ } else {
+ return Sortable.sequence(element, arguments[1]).map( function(item) {
+ return name + "[]=" + encodeURIComponent(item);
+ }).join('&');
+ }
}
-}
\ No newline at end of file
+};
+
+// 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);
+};
+
+Element.findChildren = function(element, only, recursive, tagName) {
+ if(!element.hasChildNodes()) return null;
+ tagName = tagName.toUpperCase();
+ if(only) only = [only].flatten();
+ var elements = [];
+ $A(element.childNodes).each( function(e) {
+ if(e.tagName && e.tagName.toUpperCase()==tagName &&
+ (!only || (Element.classNames(e).detect(function(v) { return only.include(v) }))))
+ elements.push(e);
+ if(recursive) {
+ var grandchildren = Element.findChildren(e, only, recursive, tagName);
+ if(grandchildren) elements.push(grandchildren);
+ }
+ });
+
+ return (elements.length>0 ? elements.flatten() : []);
+};
+
+Element.offsetSize = function (element, type) {
+ return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')];
+};
\ No newline at end of file
projects / selectricity-live / blobdiff