--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/static/dragdrop.js Tue May 05 19:37:32 2009 +0300
@@ -0,0 +1,248 @@
+// script.aculo.us dragdrop.js v1.8.0, Tue Nov 06 15:01:40 +0300 2007
+
+// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+// (c) 2005-2007 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz)
+//
+// script.aculo.us is freely distributable under the terms of an MIT-style license.
+// For details, see the script.aculo.us web site: http://script.aculo.us/
+//
+// Modified by Tero Marttila to strip unused code
+
+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) {
+ if(draggable.options.delay) {
+ this._timeout = setTimeout(function() {
+ Draggables._timeout = null;
+ window.focus();
+ Draggables.activeDraggable = draggable;
+ }.bind(this), draggable.options.delay);
+ } else {
+ window.focus(); // allows keypress events if window isn't currently focused, fails for Safari
+ this.activeDraggable = draggable;
+ }
+ },
+
+ deactivate: function() {
+ 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._timeout) {
+ clearTimeout(this._timeout);
+ this._timeout = null;
+ }
+ 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);
+ });
+ if(draggable.options[eventName]) draggable.options[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({
+ initialize: function(element) {
+ var defaults = {
+ handle: false,
+ zindex: 1000,
+ quiet: false,
+ delay: 0
+ };
+
+ var options = Object.extend(defaults, arguments[1] || { });
+
+ this.element = $(element);
+
+ if(options.handle && Object.isString(options.handle))
+ this.handle = this.element.down('.'+options.handle, 0);
+
+ if(!this.handle) this.handle = $(options.handle);
+ if(!this.handle) this.handle = this.element;
+
+ Element.makePositioned(this.element); // fix IE
+
+ 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(!Object.isUndefined(Draggable._dragging[this.element]) &&
+ Draggable._dragging[this.element]) return;
+ if(Event.isLeftClick(event)) {
+ // abort on form elements, fixes a Firefox issue
+ var src = Event.element(event);
+ if((tag_name = src.tagName.toUpperCase()) && (
+ tag_name=='INPUT' ||
+ tag_name=='SELECT' ||
+ tag_name=='OPTION' ||
+ tag_name=='BUTTON' ||
+ tag_name=='TEXTAREA')) return;
+
+ 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.delta)
+ this.delta = this.currentDelta();
+
+ if(this.options.zindex) {
+ this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0);
+ this.element.style.zIndex = this.options.zindex;
+ }
+
+ Draggables.notify('onStart', this, event);
+ },
+
+ updateDrag: function(event, pointer) {
+ if(!this.dragging) this.startDrag(event);
+
+ Draggables.notify('onDrag', this, event);
+
+ this.draw(pointer);
+ if(this.options.change) this.options.change(this);
+
+ // fix AppleWebKit rendering
+ if(Prototype.Browser.WebKit) window.scrollBy(0,0);
+
+ Event.stop(event);
+ },
+
+ finishDrag: function(event, success) {
+ this.dragging = false;
+
+ Draggables.notify('onEnd', this, event);
+
+ var d = this.currentDelta();
+ this.delta = d;
+
+ if(this.options.zindex)
+ this.element.style.zIndex = this.originalZ;
+
+ Draggables.deactivate(this);
+ },
+
+ 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));
+
+ 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
+ },
+
+});
+
+Draggable._dragging = { };
+