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-rw-r--r--framework/Web/Javascripts/effects/dragdrop.js1167
1 files changed, 584 insertions, 583 deletions
diff --git a/framework/Web/Javascripts/effects/dragdrop.js b/framework/Web/Javascripts/effects/dragdrop.js
index 5b4dc883..818ef5e0 100644
--- a/framework/Web/Javascripts/effects/dragdrop.js
+++ b/framework/Web/Javascripts/effects/dragdrop.js
@@ -1,584 +1,585 @@
-// 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);
- //why throw an exception?
- //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);
- },
-
- 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) {
- 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;
- element._revert = 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,
- snap: false // false, or xy or [x,y] or function(x,y){ return [x,y] }
- }, arguments[1] || {});
-
- 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(this.element.style.left || '0'),
- parseInt(this.element.style.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 $(this.findElements(element, options) || []).map( function(item) {
- return (encodeURIComponent(options.name) + "[]=" +
- encodeURIComponent(item.id.match(options.format) ? item.id.match(options.format)[1] : ''));
- }).join("&");
- }
+// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+//
+// See scriptaculous.js for full license.
+
+/*--------------------------------------------------------------------------*/
+
+var Droppables = {
+ drops: [],
+
+ remove: function(element) {
+ this.drops = this.drops.reject(function(d) { return d.element==$(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("&");
+ }
} \ No newline at end of file
generated by cgit v1.2.3 (git 2.46.0) at 2024-11-08 03:24:15 +0000