pfSense

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

// 

// 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));

      }

    }

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

    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(point, element, drop) {

    return (

      (drop.element!=element) &&

      ((!drop._containers) ||

        this.isContained(element, drop)) &&

      ((!drop.accept) ||

        (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.removeClassName(drop.element, drop.hoverclass);

    this.last_active = null;

  },

  activate: function(drop) {

    if(drop.hoverclass)

      Element.addClassName(drop.element, drop.hoverclass);

    this.last_active = drop;

  },

  show: function(point, element) {

    if(!this.drops.length) return;

    if(this.last_active) this.deactivate(this.last_active);

    this.drops.each( function(drop) {

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

        if(drop.onHover)

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

        if(drop.greedy) { 

          Droppables.activate(drop);

          throw $break;

        }

      }

    });

  },

  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 = {

  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) {

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

    this.activeDraggable = draggable;

  },

  deactivate: function(draggbale) {

    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.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(o[eventName]) o[eventName](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 = {

  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;

        element._revert = new Effect.Move(element, { x: -left_offset, y: -top_offset, duration: dur});

      },

      endeffect: function(element) { 

        new Effect.Opacity(element, {duration:0.2, from:0.7, to:1.0}); 

      },

      zindex: 1000,

      revert: false,

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

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

    this.element = $(element);

    if(options.handle && (typeof options.handle == 'string'))

      this.handle = Element.childrenWithClassName(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.delta    = this.currentDelta();

    this.options  = options;

    this.dragging = false;   

    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(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;

      if(this.element._revert) {

        this.element._revert.cancel();

        this.element._revert = null;

      }

      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.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);

    }

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

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

  },

  updateDrag: function(event, pointer) {

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

    Position.prepare();

    Droppables.show(pointer, this.element);

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

    this.draw(pointer);

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

    // fix AppleWebKit rendering

    if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);

    Event.stop(event);

  },

  finishDrag: function(event, success) {

    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, event);

    var revert = this.options.revert;

    if(revert && typeof revert == 'function') revert = revert(this.element);

    var d = this.currentDelta();

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

      this.options.reverteffect(this.element, 

        d[1]-this.delta[1], d[0]-this.delta[0]);

    } else {

      this.delta = d;

    }

    if(this.options.zindex)

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

    if(this.options.endeffect) 

      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.finishDrag(event, true);

    Event.stop(event);

  },

  draw: function(point) {

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

    var d = this.currentDelta();

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

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

    if(this.options.snap) {

      if(typeof this.options.snap == 'function') {

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

      } else {

      if(this.options.snap instanceof Array) {

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

          return Math.round(v/this.options.snap[i])*this.options.snap[i] }.bind(this))

      } else {

        p = p.map( function(v) {

          return Math.round(v/this.options.snap)*this.options.snap }.bind(this))

      }

    }}

    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

  }

}

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

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:    Prototype.emptyFunction,

      onUpdate:    Prototype.emptyFunction

    }, 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.childrenWithClassName(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.toUpperCase()==options.tag.toUpperCase() &&

        (!options.only || (Element.hasClassName(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) {

      var oldParentNode = element.parentNode;

      dropon.appendChild(element);

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

      Sortable.options(dropon).onChange(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.addClassName(Sortable._marker, 'dropmarker');

      Sortable._marker.style.position = 'absolute';

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

    }    

    var offsets = Position.cumulativeOffset(dropon);

    Sortable._marker.style.left = offsets[0] + 'px';

    Sortable._marker.style.top = offsets[1] + 'px';

    if(position=='after')

      if(sortable.overlap == 'horizontal') 

        Sortable._marker.style.left = (offsets[0]+dropon.clientWidth) + 'px';

      else

        Sortable._marker.style.top = (offsets[1]+dropon.clientHeight) + '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) || []).map( function(item) {

      return (encodeURIComponent(options.name) + "[]=" + 

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

    }).join("&");

  }

}