From 165f82d18026dbbcf94695128d32fadef916af5a Mon Sep 17 00:00:00 2001
From: David Heinemeier Hansson <david@loudthinking.com>
Date: Sat, 9 Jul 2005 17:01:12 +0000
Subject: Added even more goodies to script.aculo.us #1677 [Thomas Fuchs]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@1783 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
---
 .../action_view/helpers/javascripts/dragdrop.js    | 122 +++++++++++++++------
 .../lib/action_view/helpers/javascripts/effects.js |  86 ++++++++-------
 2 files changed, 133 insertions(+), 75 deletions(-)

(limited to 'actionpack/lib/action_view/helpers/javascripts')

diff --git a/actionpack/lib/action_view/helpers/javascripts/dragdrop.js b/actionpack/lib/action_view/helpers/javascripts/dragdrop.js
index eb6511095f..2bf84f1cb1 100644
--- a/actionpack/lib/action_view/helpers/javascripts/dragdrop.js
+++ b/actionpack/lib/action_view/helpers/javascripts/dragdrop.js
@@ -112,6 +112,12 @@ Element.Class = {
 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) {
     var element = $(element);
     var options = {
@@ -134,43 +140,42 @@ var Droppables = {
         options._containers.length-1;
     }
     
-    if(element.style.position=='') //fix IE
-      element.style.position = 'relative'; 
+    Element.makePositioned(element); // fix IE
     
-    // activate the droppable
-    element.droppable = options;
+    options.element = element;
     
+    // activate the droppable    
     if(!this.drops) this.drops = [];
-    this.drops.push(element);
+    this.drops.push(options);
   },
   
   is_contained: function(element, drop) {
-    var containers = drop.droppable._containers;
+    var containers = drop._containers;
     var parentNode = element.parentNode;
-    var i = drop.droppable._containers_length;
+    var i = drop._containers_length;
     do { if(parentNode==containers[i]) return true; } while (i--);
     return false;
   },
   
   is_affected: function(pX, pY, element, drop) {
     return (
-      (drop!=element) &&
-      ((!drop.droppable._containers) ||
+      (drop.element!=element) &&
+      ((!drop._containers) ||
         this.is_contained(element, drop)) &&
-      ((!drop.droppable.accept) ||
-        (Element.Class.has_any(element, drop.droppable.accept))) &&
-      Position.within(drop, pX, pY) );
+      ((!drop.accept) ||
+        (Element.Class.has_any(element, drop.accept))) &&
+      Position.within(drop.element, pX, pY) );
   },
   
   deactivate: function(drop) {
-    Element.Class.remove(drop, drop.droppable.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.droppable.hoverclass) {
-      Element.Class.add(drop, drop.droppable.hoverclass);
+    if(drop.hoverclass) {
+      Element.Class.add(drop.element, drop.hoverclass);
       this.last_active = drop;
     }
   },
@@ -184,10 +189,9 @@ var Droppables = {
     var i = this.drops.length-1; do {
       var drop = this.drops[i];
       if(this.is_affected(pX, pY, element, drop)) {
-        if(drop.droppable.onHover)
-           drop.droppable.onHover(
-            element, drop, Position.overlap(drop.droppable.overlap, drop));
-        if(drop.droppable.greedy) { 
+        if(drop.onHover)
+           drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));
+        if(drop.greedy) { 
           this.activate(drop);
           return;
         }
@@ -200,8 +204,8 @@ var Droppables = {
     Position.prepare();
     
     if (this.is_affected(Event.pointerX(event), Event.pointerY(event), element, this.last_active))
-      if (this.last_active.droppable.onDrop) 
-        this.last_active.droppable.onDrop(element, this.last_active);
+      if (this.last_active.onDrop) 
+        this.last_active.onDrop(element, this.last_active);
     
   },
   
@@ -216,6 +220,11 @@ Draggables = {
   addObserver: function(observer) {
     this.observers.push(observer);    
   },
+  removeObserver: function(observer) {
+    for(var i = 0; i < this.observers.length; i++)
+      if(this.observers[i] = observer)
+        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);
@@ -245,9 +254,7 @@ Draggable.prototype = {
     this.element      = $(element);
     this.handle       = options.handle ? $(options.handle) : this.element;
     
-    // fix IE
-    if(!this.element.style.position)
-      this.element.style.position = 'relative';
+    Element.makePositioned(this.element); // fix IE
     
     this.offsetX      = 0;
     this.offsetY      = 0;
@@ -262,10 +269,21 @@ Draggable.prototype = {
     this.active       = false;
     this.dragging     = false;   
     
-    Event.observe(this.handle, "mousedown", this.startDrag.bindAsEventListener(this));
-    Event.observe(document, "mouseup", this.endDrag.bindAsEventListener(this));
-    Event.observe(document, "mousemove", this.update.bindAsEventListener(this));
-    Event.observe(document, "keypress", this.keyPress.bindAsEventListener(this));
+    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);
+    Event.observe(document, "mouseup", this.eventMouseUp);
+    Event.observe(document, "mousemove", this.eventMouseMove);
+    Event.observe(document, "keypress", this.eventKeypress);
+  },
+  destroy: function() {
+    Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);
+    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');
@@ -380,9 +398,32 @@ SortableObserver.prototype = {
 }
 
 Sortable = {
+  sortables: new Array(),
+  options: function(element){
+    var 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){
+    var 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.observer);
+        for(var j=0;j<s.droppables.length;j++)
+          Droppables.remove(s.droppables[j]);
+        for(var j=0;j<s.draggables.length;j++)
+          s.draggables[j].destroy();
+        this.sortables.splice(i,1);
+      }
+    }
+  },
   create: function(element) {
     var element = $(element);
     var options = { 
+      element:     element,
       tag:         'li',       // assumes li children, override with tag: 'tagname'
       overlap:     'vertical', // one of 'vertical', 'horizontal'
       constraint:  'vertical', // one of 'vertical', 'horizontal', false
@@ -393,7 +434,9 @@ Sortable = {
       onChange:    function() {},
       onUpdate:    function() {}
     }.extend(arguments[1] || {});
-    element.sortable = options;
+    
+    // clear any old sortable with same element
+    this.destroy(element);
     
     // build options for the draggables
     var options_for_draggable = {
@@ -443,8 +486,8 @@ Sortable = {
     // fix for gecko engine
     Element.cleanWhitespace(element); 
     
-    // for onupdate
-    Draggables.addObserver(new SortableObserver(element, options.onUpdate));
+    options.draggables = [];
+    options.droppables = [];
     
     // make it so 
     var elements = element.childNodes;
@@ -456,16 +499,27 @@ Sortable = {
         var handle = options.handle ? 
           Element.Class.childrenWith(elements[i], options.handle)[0] : elements[i];
         
-        new Draggable(elements[i], options_for_draggable.extend({ handle: handle }));
+        options.draggables.push(new Draggable(elements[i], options_for_draggable.extend({ handle: handle })));
+        
         Droppables.add(elements[i], options_for_droppable);
+        options.droppables.push(elements[i]);
+        
       }
       
+    // keep reference
+    this.sortables.push(options);
+    
+    // for onupdate
+    options.observer = new SortableObserver(element, options.onUpdate);
+    Draggables.addObserver(options.observer);
+
   },
   serialize: function(element) {
     var element = $(element);
+    var sortableOptions = this.options(element);
     var options = {
-      tag:  element.sortable.tag,
-      only: element.sortable.only,
+      tag:  sortableOptions.tag,
+      only: sortableOptions.only,
       name: element.id
     }.extend(arguments[1] || {});
     
diff --git a/actionpack/lib/action_view/helpers/javascripts/effects.js b/actionpack/lib/action_view/helpers/javascripts/effects.js
index 2b27052cda..abc706673b 100644
--- a/actionpack/lib/action_view/helpers/javascripts/effects.js
+++ b/actionpack/lib/action_view/helpers/javascripts/effects.js
@@ -127,26 +127,26 @@ Effect.Base.prototype = {
 }
 
 Effect.Parallel = Class.create();
-  Effect.Parallel.prototype = (new Effect.Base()).extend({
-    initialize: function(effects) {
-      this.effects = effects || [];
-      this.start(arguments[1]);
-    },
-    update: function(position) {
-      for (var i = 0; i < this.effects.length; i++)
-        this.effects[i].render(position);  
-    },
-    finish: function(position) {
-      for (var i = 0; i < this.effects.length; i++)
-        if(this.effects[i].finish) this.effects[i].finish(position);
-    }
-  });
+Effect.Parallel.prototype.extend(Effect.Base.prototype).extend({
+  initialize: function(effects) {
+    this.effects = effects || [];
+    this.start(arguments[1]);
+  },
+  update: function(position) {
+    for (var i = 0; i < this.effects.length; i++)
+      this.effects[i].render(position);  
+  },
+  finish: function(position) {
+    for (var i = 0; i < this.effects.length; i++)
+      if(this.effects[i].finish) this.effects[i].finish(position);
+  }
+});
 
 // Internet Explorer caveat: works only on elements the have
 // a 'layout', meaning having a given width or height. 
 // There is no way to safely set this automatically.
 Effect.Opacity = Class.create();
-Effect.Opacity.prototype = (new Effect.Base()).extend({
+Effect.Opacity.prototype.extend(Effect.Base.prototype).extend({
   initialize: function(element) {
     this.element = $(element);
     options = {
@@ -166,29 +166,29 @@ Effect.Opacity.prototype = (new Effect.Base()).extend({
 });
 
 Effect.MoveBy = Class.create();
- Effect.MoveBy.prototype = (new Effect.Base()).extend({
-   initialize: function(element, toTop, toLeft) {
-     this.element      = $(element);
-     this.originalTop  = parseFloat(this.element.style.top || '0');
-     this.originalLeft = parseFloat(this.element.style.left || '0');
-     this.toTop        = toTop;
-     this.toLeft       = toLeft;
-     Element.makePositioned(this.element);
-     this.start(arguments[3]);
-   },
-   update: function(position) {
-     topd  = this.toTop  * position + this.originalTop;
-     leftd = this.toLeft * position + this.originalLeft;
-     this.setPosition(topd, leftd);
-   },
-   setPosition: function(topd, leftd) {
-     this.element.style.top  = topd  + "px";
-     this.element.style.left = leftd + "px";
-   }
+Effect.MoveBy.prototype.extend(Effect.Base.prototype).extend({
+  initialize: function(element, toTop, toLeft) {
+    this.element      = $(element);
+    this.originalTop  = parseFloat(this.element.style.top || '0');
+    this.originalLeft = parseFloat(this.element.style.left || '0');
+    this.toTop        = toTop;
+    this.toLeft       = toLeft;
+    Element.makePositioned(this.element);
+    this.start(arguments[3]);
+  },
+  update: function(position) {
+    topd  = this.toTop  * position + this.originalTop;
+    leftd = this.toLeft * position + this.originalLeft;
+    this.setPosition(topd, leftd);
+  },
+  setPosition: function(topd, leftd) {
+    this.element.style.top  = topd  + "px";
+    this.element.style.left = leftd + "px";
+  }
 });
 
 Effect.Scale = Class.create();
-Effect.Scale.prototype = (new Effect.Base()).extend({
+Effect.Scale.prototype.extend(Effect.Base.prototype).extend({
   initialize: function(element, percent) {
     this.element = $(element)
     options = {
@@ -246,7 +246,7 @@ Effect.Scale.prototype = (new Effect.Base()).extend({
 });
 
 Effect.Highlight = Class.create();
-Effect.Highlight.prototype = (new Effect.Base()).extend({
+Effect.Highlight.prototype.extend(Effect.Base.prototype).extend({
   initialize: function(element) {
     this.element = $(element);
     
@@ -260,8 +260,9 @@ Effect.Highlight.prototype = (new Effect.Base()).extend({
       var i=0; do { endcolor += parseInt(cols[i]).toColorPart() } while (++i<3); }
       
     var options = {
-      startcolor: "#ffff99",
-      endcolor:   endcolor
+      startcolor:   "#ffff99",
+      endcolor:     endcolor,
+      restorecolor: current 
     }.extend(arguments[1] || {});
     
     // init color calculations
@@ -283,11 +284,14 @@ Effect.Highlight.prototype = (new Effect.Base()).extend({
       Math.round(this.colors_base[2]+(this.colors_delta[2]*position)) ];
     this.element.style.backgroundColor = "#" +
       colors[0].toColorPart() + colors[1].toColorPart() + colors[2].toColorPart();
+  },
+  finish: function() {
+    this.element.style.backgroundColor = this.options.restorecolor;
   }
 });
 
 Effect.ScrollTo = Class.create();
-Effect.ScrollTo.prototype = (new Effect.Base()).extend({
+Effect.ScrollTo.prototype.extend(Effect.Base.prototype).extend({
   initialize: function(element) {
     this.element = $(element);
     Position.prepare();
@@ -310,7 +314,7 @@ Effect.ScrollTo.prototype = (new Effect.Base()).extend({
 
 /* ------------- prepackaged effects ------------- */
 
-Effect.Fade =  function(element) {
+Effect.Fade = function(element) {
   options = {
   from: 1.0,
   to:   0.0,
@@ -321,7 +325,7 @@ Effect.Fade =  function(element) {
   new Effect.Opacity(element,options);
 }
 
-Effect.Appear =  function(element) {
+Effect.Appear = function(element) {
   options = {
   from: 0.0,
   to:   1.0,
-- 
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