From bd11ca377540c15c9dda6f943e14234e10e37f31 Mon Sep 17 00:00:00 2001
From: David Heinemeier Hansson <david@loudthinking.com>
Date: Wed, 6 Jul 2005 11:30:48 +0000
Subject: Keep JS files locally

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@1737 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
---
 railties/html/javascripts/dragdrop.js | 476 ++++++++++++++++++++++++++++++++++
 1 file changed, 476 insertions(+)
 create mode 100644 railties/html/javascripts/dragdrop.js

(limited to 'railties/html/javascripts/dragdrop.js')

diff --git a/railties/html/javascripts/dragdrop.js b/railties/html/javascripts/dragdrop.js
new file mode 100644
index 0000000000..20432a3c88
--- /dev/null
+++ b/railties/html/javascripts/dragdrop.js
@@ -0,0 +1,476 @@
+// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+// 
+// Element.Class part Copyright (c) 2005 by Rick Olson
+// 
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Element.Class = {
+    // Element.toggleClass(element, className) toggles the class being on/off
+    // Element.toggleClass(element, className1, className2) toggles between both classes,
+    //   defaulting to className1 if neither exist
+    toggle: function(element, className) {
+      if(Element.Class.has(element, className)) {
+        Element.Class.remove(element, className);
+        if(arguments.length == 3) Element.Class.add(element, arguments[2]);
+      } else {
+        Element.Class.add(element, className);
+        if(arguments.length == 3) Element.Class.remove(element, arguments[2]);
+      }
+    },
+
+    // gets space-delimited classnames of an element as an array
+    get: function(element) {
+      element = $(element);
+      return element.className.split(' ');
+    },
+
+    // functions adapted from original functions by Gavin Kistner
+    remove: function(element) {
+      element = $(element);
+      var regEx;
+      for(var i = 1; i < arguments.length; i++) {
+        regEx = new RegExp("^" + arguments[i] + "\\b\\s*|\\s*\\b" + arguments[i] + "\\b", 'g');
+        element.className = element.className.replace(regEx, '')
+      }
+    },
+
+    add: function(element) {
+      element = $(element);
+      for(var i = 1; i < arguments.length; i++) {
+        Element.Class.remove(element, arguments[i]);
+        element.className += (element.className.length > 0 ? ' ' : '') + arguments[i];
+      }
+    },
+
+    // returns true if all given classes exist in said element
+    has: function(element) {
+      element = $(element);
+      if(!element || !element.className) return false;
+      var regEx;
+      for(var i = 1; i < arguments.length; i++) {
+        regEx = new RegExp("\\b" + arguments[i] + "\\b");
+        if(!regEx.test(element.className)) return false;
+      }
+      return true;
+    },
+    
+    // expects arrays of strings and/or strings as optional paramters
+    // Element.Class.has_any(element, ['classA','classB','classC'], 'classD')
+    has_any: function(element) {
+      element = $(element);
+      if(!element || !element.className) return false;
+      var regEx;
+      for(var i = 1; i < arguments.length; i++) {
+        if((typeof arguments[i] == 'object') && 
+          (arguments[i].constructor == Array)) {
+          for(var j = 0; j < arguments[i].length; j++) {
+            regEx = new RegExp("\\b" + arguments[i][j] + "\\b");
+            if(regEx.test(element.className)) return true;
+          }
+        } else {
+          regEx = new RegExp("\\b" + arguments[i] + "\\b");
+          if(regEx.test(element.className)) return true;
+        }
+      }
+      return false;
+    },
+    
+    childrenWith: function(element, className) {
+      var children = $(element).getElementsByTagName('*');
+      var elements = new Array();
+      
+      for (var i = 0; i < children.length; i++) {
+        if (Element.Class.has(children[i], className)) {
+          elements.push(children[i]);
+          break;
+        }
+      }
+      
+      return elements;
+    }
+}
+
+/*--------------------------------------------------------------------------*/
+
+var Droppables = {
+  drops: false,
+  
+  add: function(element) {
+    var element = $(element);
+    var options = {
+      greedy:     true,
+      hoverclass: null  
+    }.extend(arguments[1] || {});
+    
+    // cache containers
+    if(options.containment) {
+      options._containers = new Array();
+      var containment = options.containment;
+      if((typeof containment == 'object') && 
+        (containment.constructor == Array)) {
+        for(var i=0; i<containment.length; i++)
+          options._containers.push($(containment[i]));
+      } else {
+        options._containers.push($(containment));
+      }
+      options._containers_length = 
+        options._containers.length-1;
+    }
+    
+    if(element.style.position=='') //fix IE
+      element.style.position = 'relative'; 
+    
+    // activate the droppable
+    element.droppable = options;
+    
+    if(!this.drops) this.drops = [];
+    this.drops.push(element);
+  },
+  
+  is_contained: function(element, drop) {
+    var containers = drop.droppable._containers;
+    var parentNode = element.parentNode;
+    var i = drop.droppable._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) ||
+        this.is_contained(element, drop)) &&
+      ((!drop.droppable.accept) ||
+        (Element.Class.has_any(element, drop.droppable.accept))) &&
+      Position.within(drop, pX, pY) );
+  },
+  
+  deactivate: function(drop) {
+    Element.Class.remove(drop, drop.droppable.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);
+      this.last_active = drop;
+    }
+  },
+  
+  show: function(event, element) {
+    if(!this.drops) 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.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) { 
+          this.activate(drop);
+          return;
+        }
+      }
+    } while (i--);
+  },
+  
+  fire: function(event, element) {
+    if(!this.drops) 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.is_affected(pX, pY, element, drop))
+        if(drop.droppable.onDrop)
+           drop.droppable.onDrop(element);
+    } while (i--);
+  },
+  
+  reset: function() {
+    if(this.last_active)
+      this.deactivate(this.last_active);
+  }
+}
+
+Draggables = {
+  observers: new Array(),
+  addObserver: function(observer) {
+    this.observers.push(observer);    
+  },
+  notify: function(eventName, draggable) {  // 'onStart', 'onEnd'
+    for(var i = 0; i < this.observers.length; i++)
+      this.observers[i][eventName](draggable);
+  }
+}
+
+/*--------------------------------------------------------------------------*/
+
+Draggable = Class.create();
+Draggable.prototype = {
+  initialize: function(element) {
+    var options = {
+      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) {
+        new Effect.MoveBy(element, -top_offset, -left_offset, {duration:0.4});
+      },
+      endeffect: function(element) { 
+         new Effect.Opacity(element, {duration:0.2, from:0.7, to:1.0}); 
+      },
+      zindex: 1000,
+      revert: false
+    }.extend(arguments[1] || {});
+    
+    this.element      = $(element);
+    this.element.drag = this;
+    this.handle       = options.handle ? $(options.handle) : this.element;
+    
+    // fix IE
+    if(!this.element.style.position)
+      this.element.style.position = 'relative';
+    
+    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.originalZ    = parseInt(this.element.style.zIndex || "0");
+    
+    this.options      = options;
+    
+    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));
+  },
+  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)) {
+      this.active = true;
+      
+      var style = this.element.style;
+      this.originalY = this.element.offsetTop  - this.currentTop()  - this.originalTop;
+      this.originalX = this.element.offsetLeft - this.currentLeft() - this.originalLeft;
+      this.offsetY =  event.clientY - this.originalY - this.originalTop;
+      this.offsetX =  event.clientX - this.originalX - this.originalLeft;
+      
+      Event.stop(event);
+    }
+  },
+  endDrag: function(event) {
+    if(this.active && this.dragging) {
+      this.active = false;
+      this.dragging = false;
+      
+      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();
+      }
+      this.element.style.zIndex = this.originalZ;
+     
+      if(this.options.endeffect) 
+        this.options.endeffect(this.element);
+      
+      Droppables.reset();
+      Event.stop(event);
+    }
+    this.active = false;
+    this.dragging = false;
+  },
+  draw: function(event) {
+    var style = this.element.style;
+    this.originalX = this.element.offsetLeft - this.currentLeft() - this.originalLeft;
+    this.originalY = this.element.offsetTop  - this.currentTop()  - this.originalTop;
+    if((!this.options.constraint) || (this.options.constraint=='horizontal'))
+      style.left = ((event.clientX - this.originalX) - this.offsetX) + "px";
+    if((!this.options.constraint) || (this.options.constraint=='vertical'))
+      style.top  = ((event.clientY - this.originalY) - 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(style.position=="") style.position = "relative";
+        style.zIndex = this.options.zindex;
+        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);
+   }
+  }
+}
+
+/*--------------------------------------------------------------------------*/
+
+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() {    
+    if(this.lastValue != Sortable.serialize(this.element))
+      this.observer(this.element)
+  }
+}
+
+Sortable = {
+  create: function(element) {
+    var element = $(element);
+    var options = { 
+      tag:         'li',       // assumes li children, override with tag: 'tagname'
+      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,
+      onChange:    function() {},
+      onUpdate:    function() {}
+    }.extend(arguments[1] || {});
+    element.sortable = options;
+    
+    // build options for the draggables
+    var options_for_draggable = {
+      revert:      true,
+      constraint:  options.constraint,
+      handle:      handle };
+    if(options.starteffect)
+      options_for_draggable.starteffect = options.starteffect;
+    if(options.reverteffect)
+      options_for_draggable.reverteffect = options.reverteffect;
+    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: function(element, dropon, overlap) { 
+        if(overlap>0.5) {
+          if(dropon.previousSibling != element) {
+            var oldParentNode = element.parentNode;
+            element.style.visibility = "hidden"; // fix gecko rendering
+            dropon.parentNode.insertBefore(element, dropon);
+            if(dropon.parentNode!=oldParentNode && oldParentNode.sortable) 
+              oldParentNode.sortable.onChange(element);
+            if(dropon.parentNode.sortable)
+              dropon.parentNode.sortable.onChange(element);
+          }
+        } else {                
+          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 && oldParentNode.sortable) 
+              oldParentNode.sortable.onChange(element);
+            if(dropon.parentNode.sortable)
+              dropon.parentNode.sortable.onChange(element);
+          }
+        }
+      }
+    }
+
+    // fix for gecko engine
+    Element.cleanWhitespace(element); 
+    
+    // for onupdate
+    Draggables.addObserver(new SortableObserver(element, options.onUpdate));
+    
+    // make it so 
+    var elements = element.childNodes;
+    for (var i = 0; i < elements.length; i++) 
+      if(elements[i].tagName && elements[i].tagName==options.tag.toUpperCase() &&
+        (!options.only || (Element.Class.has(elements[i], options.only)))) {
+        
+        // handles are per-draggable
+        var handle = options.handle ? 
+          Element.Class.childrenWith(elements[i], options.handle)[0] : elements[i];
+        
+        new Draggable(elements[i], options_for_draggable.extend({ handle: handle }));
+        Droppables.add(elements[i], options_for_droppable);
+      }
+      
+  },
+  serialize: function(element) {
+    var element = $(element);
+    var options = {
+      tag:  element.sortable.tag,
+      only: element.sortable.only,
+      name: element.id
+    }.extend(arguments[1] || {});
+    
+    var items = $(element).childNodes;
+    var queryComponents = new Array();
+ 
+    for(var i=0; i<items.length; i++)
+      if(items[i].tagName && items[i].tagName==options.tag.toUpperCase() &&
+        (!options.only || (Element.Class.has(items[i], options.only))))
+        queryComponents.push(
+          encodeURIComponent(options.name) + "[]=" + 
+          encodeURIComponent(items[i].id.split("_")[1]));
+
+    return queryComponents.join("&");
+  }
+} 
\ No newline at end of file
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