1 files changed, 516 insertions, 0 deletions
diff --git a/framework/Web/Javascripts/effects/dragdrop.js b/framework/Web/Javascripts/effects/dragdrop.js
new file mode 100644
index 00000000..bfb6e8e9
--- /dev/null
+++ b/framework/Web/Javascripts/effects/dragdrop.js
@@ -0,0 +1,516 @@
+// 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.
+
+/*--------------------------------------------------------------------------*/
+
+var Droppables = {
+  drops: [],
+
+  remove: function(element) {
+    this.drops = this.drops.reject(function(d) { return d.element==element });
+  },
+
+  add: function(element) {
+    element = $(element);
+    var options = Object.extend({
+      greedy:     true,
+      hoverclass: null  
+    }, arguments[1] || {});
+
+    // cache containers
+    if(options.containment) {
+      options._containers = [];
+      var containment = options.containment;
+      if((typeof containment == 'object') && 
+        (containment.constructor == Array)) {
+        containment.each( function(c) { options._containers.push($(c)) });
+      } else {
+        options._containers.push($(containment));
+      }
+    }
+
+    Element.makePositioned(element); // fix IE
+    options.element = element;
+
+    this.drops.push(options);
+  },
+
+  isContained: function(element, drop) {
+    var parentNode = element.parentNode;
+    return drop._containers.detect(function(c) { return parentNode == c });
+  },
+
+  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) {
+    if(drop.hoverclass)
+      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.length) 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--);
+    
+    if(this.last_active) this.deactivate(this.last_active);
+  },
+
+  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, event);
+  },
+
+  reset: function() {
+    if(this.last_active)
+      this.deactivate(this.last_active);
+  }
+}
+
+var Draggables = {
+  observers: [],
+  addObserver: function(observer) {
+    this.observers.push(observer);    
+  },
+  removeObserver: function(element) {  // element instead of obsever fixes mem leaks
+    this.observers = this.observers.reject( function(o) { return o.element==element });
+  },
+  notify: function(eventName, draggable) {  // 'onStart', 'onEnd'
+    this.observers.invoke(eventName, draggable);
+  }
+}
+
+/*--------------------------------------------------------------------------*/
+
+var Draggable = Class.create();
+Draggable.prototype = {
+  initialize: function(element) {
+	this.element      = $(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] || {});
+
+    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    
+
+    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.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);
+    
+    this.registerEvents();
+  },
+  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);
+  },
+  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)) {
+      
+      // 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;
+      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();
+    }
+
+    if(this.options.zindex)
+      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(Element.getStyle(this.element,'position')=='') 
+          style.position = "relative";
+        
+        if(this.options.zindex) {
+          this.options.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);
+        }
+
+        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);
+    return this.sortables.detect(function(s) { return s.element == element });
+  },
+  destroy: function(element){
+    element = $(element);
+    this.sortables.findAll(function(s) { return s.element == element }).each(function(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 });
+  },
+  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,
+      format:      null,
+      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:      options.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);
+    }
+
+    (this.findElements(element, options) || []).each( function(e) {
+      // handles are per-draggable
+      var handle = options.handle ? 
+        Element.Class.childrenWith(e, 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);      
+    });
+
+    // 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 = [];
+    $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 (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 = $(element);
+    var sortableOptions = this.options(element);
+    var options = Object.extend({
+      tag:  sortableOptions.tag,
+      only: sortableOptions.only,
+      name: element.id,
+      format: sortableOptions.format || /^[^_]*_(.*)$/
+    }, 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("&");
+  }
+} 
+\ No newline at end of file