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+/***
+MochiKit.DragAndDrop 1.4
+
+See <http://mochikit.com/> for documentation, downloads, license, etc.
+
+Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+ Mochi-ized By Thomas Herve (_firstname_@nimail.org)
+
+***/
+
+if (typeof(dojo) != 'undefined') {
+ dojo.provide('MochiKit.DragAndDrop');
+ dojo.require('MochiKit.Base');
+ dojo.require('MochiKit.DOM');
+ dojo.require('MochiKit.Iter');
+ dojo.require('MochiKit.Visual');
+ dojo.require('MochiKit.Signal');
+}
+
+if (typeof(JSAN) != 'undefined') {
+ JSAN.use("MochiKit.Base", []);
+ JSAN.use("MochiKit.DOM", []);
+ JSAN.use("MochiKit.Visual", []);
+ JSAN.use("MochiKit.Iter", []);
+ JSAN.use("MochiKit.Signal", []);
+}
+
+try {
+ if (typeof(MochiKit.Base) == 'undefined' ||
+ typeof(MochiKit.DOM) == 'undefined' ||
+ typeof(MochiKit.Visual) == 'undefined' ||
+ typeof(MochiKit.Signal) == 'undefined' ||
+ typeof(MochiKit.Iter) == 'undefined') {
+ throw "";
+ }
+} catch (e) {
+ throw "MochiKit.DragAndDrop depends on MochiKit.Base, MochiKit.DOM, MochiKit.Visual, MochiKit.Signal and MochiKit.Iter!";
+}
+
+if (typeof(MochiKit.DragAndDrop) == 'undefined') {
+ MochiKit.DragAndDrop = {};
+}
+
+MochiKit.DragAndDrop.NAME = 'MochiKit.DragAndDrop';
+MochiKit.DragAndDrop.VERSION = '1.4';
+
+MochiKit.DragAndDrop.__repr__ = function () {
+ return '[' + this.NAME + ' ' + this.VERSION + ']';
+};
+
+MochiKit.DragAndDrop.toString = function () {
+ return this.__repr__();
+};
+
+MochiKit.DragAndDrop.EXPORT = [
+ "Droppable",
+ "Draggable"
+];
+
+MochiKit.DragAndDrop.EXPORT_OK = [
+ "Droppables",
+ "Draggables"
+];
+
+MochiKit.DragAndDrop.Droppables = {
+ /***
+
+ Manage all droppables. Shouldn't be used, use the Droppable object instead.
+
+ ***/
+ drops: [],
+
+ remove: function (element) {
+ this.drops = MochiKit.Base.filter(function (d) {
+ return d.element != MochiKit.DOM.getElement(element);
+ }, this.drops);
+ },
+
+ register: function (drop) {
+ this.drops.push(drop);
+ },
+
+ unregister: function (drop) {
+ this.drops = MochiKit.Base.filter(function (d) {
+ return d != drop;
+ }, this.drops);
+ },
+
+ prepare: function (element) {
+ MochiKit.Base.map(function (drop) {
+ if (drop.isAccepted(element)) {
+ if (drop.options.activeclass) {
+ MochiKit.DOM.addElementClass(drop.element,
+ drop.options.activeclass);
+ }
+ drop.options.onactive(drop.element, element);
+ }
+ }, this.drops);
+ },
+
+ findDeepestChild: function (drops) {
+ deepest = drops[0];
+
+ for (i = 1; i < drops.length; ++i) {
+ if (MochiKit.DOM.isParent(drops[i].element, deepest.element)) {
+ deepest = drops[i];
+ }
+ }
+ return deepest;
+ },
+
+ show: function (point, element) {
+ if (!this.drops.length) {
+ return;
+ }
+ var affected = [];
+
+ if (this.last_active) {
+ this.last_active.deactivate();
+ }
+ MochiKit.Iter.forEach(this.drops, function (drop) {
+ if (drop.isAffected(point, element)) {
+ affected.push(drop);
+ }
+ });
+ if (affected.length > 0) {
+ drop = this.findDeepestChild(affected);
+ MochiKit.Position.within(drop.element, point.page.x, point.page.y);
+ drop.options.onhover(element, drop.element,
+ MochiKit.Position.overlap(drop.options.overlap, drop.element));
+ drop.activate();
+ }
+ },
+
+ fire: function (event, element) {
+ if (!this.last_active) {
+ return;
+ }
+ MochiKit.Position.prepare();
+
+ if (this.last_active.isAffected(event.mouse(), element)) {
+ this.last_active.options.ondrop(element,
+ this.last_active.element, event);
+ }
+ },
+
+ reset: function (element) {
+ MochiKit.Base.map(function (drop) {
+ if (drop.options.activeclass) {
+ MochiKit.DOM.removeElementClass(drop.element,
+ drop.options.activeclass);
+ }
+ drop.options.ondesactive(drop.element, element);
+ }, this.drops);
+ if (this.last_active) {
+ this.last_active.deactivate();
+ }
+ }
+};
+
+/** @id MochiKit.DragAndDrop.Droppable */
+MochiKit.DragAndDrop.Droppable = function (element, options) {
+ var cls = arguments.callee;
+ if (!(this instanceof cls)) {
+ return new cls(element, options);
+ }
+ this.__init__(element, options);
+};
+
+MochiKit.DragAndDrop.Droppable.prototype = {
+ /***
+
+ A droppable object. Simple use is to create giving an element:
+
+ new MochiKit.DragAndDrop.Droppable('myelement');
+
+ Generally you'll want to define the 'ondrop' function and maybe the
+ 'accept' option to filter draggables.
+
+ ***/
+ __class__: MochiKit.DragAndDrop.Droppable,
+
+ __init__: function (element, /* optional */options) {
+ var d = MochiKit.DOM;
+ var b = MochiKit.Base;
+ this.element = d.getElement(element);
+ this.options = b.update({
+
+ /** @id MochiKit.DragAndDrop.greedy */
+ greedy: true,
+
+ /** @id MochiKit.DragAndDrop.hoverclass */
+ hoverclass: null,
+
+ /** @id MochiKit.DragAndDrop.activeclass */
+ activeclass: null,
+
+ /** @id MochiKit.DragAndDrop.hoverfunc */
+ hoverfunc: b.noop,
+
+ /** @id MochiKit.DragAndDrop.accept */
+ accept: null,
+
+ /** @id MochiKit.DragAndDrop.onactive */
+ onactive: b.noop,
+
+ /** @id MochiKit.DragAndDrop.ondesactive */
+ ondesactive: b.noop,
+
+ /** @id MochiKit.DragAndDrop.onhover */
+ onhover: b.noop,
+
+ /** @id MochiKit.DragAndDrop.ondrop */
+ ondrop: b.noop,
+
+ /** @id MochiKit.DragAndDrop.containment */
+ containment: [],
+ tree: false
+ }, options || {});
+
+ // cache containers
+ this.options._containers = [];
+ b.map(MochiKit.Base.bind(function (c) {
+ this.options._containers.push(d.getElement(c));
+ }, this), this.options.containment);
+
+ d.makePositioned(this.element); // fix IE
+
+ MochiKit.DragAndDrop.Droppables.register(this);
+ },
+
+ /** @id MochiKit.DragAndDrop.isContained */
+ isContained: function (element) {
+ if (this.options._containers.length) {
+ var containmentNode;
+ if (this.options.tree) {
+ containmentNode = element.treeNode;
+ } else {
+ containmentNode = element.parentNode;
+ }
+ return MochiKit.Iter.some(this.options._containers, function (c) {
+ return containmentNode == c;
+ });
+ } else {
+ return true;
+ }
+ },
+
+ /** @id MochiKit.DragAndDrop.isAccepted */
+ isAccepted: function (element) {
+ return ((!this.options.accept) || MochiKit.Iter.some(
+ this.options.accept, function (c) {
+ return MochiKit.DOM.hasElementClass(element, c);
+ }));
+ },
+
+ /** @id MochiKit.DragAndDrop.isAffected */
+ isAffected: function (point, element) {
+ return ((this.element != element) &&
+ this.isContained(element) &&
+ this.isAccepted(element) &&
+ MochiKit.Position.within(this.element, point.page.x,
+ point.page.y));
+ },
+
+ /** @id MochiKit.DragAndDrop.deactivate */
+ deactivate: function () {
+ /***
+
+ A droppable is deactivate when a draggable has been over it and left.
+
+ ***/
+ if (this.options.hoverclass) {
+ MochiKit.DOM.removeElementClass(this.element,
+ this.options.hoverclass);
+ }
+ this.options.hoverfunc(this.element, false);
+ MochiKit.DragAndDrop.Droppables.last_active = null;
+ },
+
+ /** @id MochiKit.DragAndDrop.activate */
+ activate: function () {
+ /***
+
+ A droppable is active when a draggable is over it.
+
+ ***/
+ if (this.options.hoverclass) {
+ MochiKit.DOM.addElementClass(this.element, this.options.hoverclass);
+ }
+ this.options.hoverfunc(this.element, true);
+ MochiKit.DragAndDrop.Droppables.last_active = this;
+ },
+
+ /** @id MochiKit.DragAndDrop.destroy */
+ destroy: function () {
+ /***
+
+ Delete this droppable.
+
+ ***/
+ MochiKit.DragAndDrop.Droppables.unregister(this);
+ },
+
+ /** @id MochiKit.DragAndDrop.repr */
+ repr: function () {
+ return '[' + this.__class__.NAME + ", options:" + MochiKit.Base.repr(this.options) + "]";
+ }
+};
+
+MochiKit.DragAndDrop.Draggables = {
+ /***
+
+ Manage draggables elements. Not intended to direct use.
+
+ ***/
+ drags: [],
+
+ register: function (draggable) {
+ if (this.drags.length === 0) {
+ var conn = MochiKit.Signal.connect;
+ this.eventMouseUp = conn(document, 'onmouseup', this, this.endDrag);
+ this.eventMouseMove = conn(document, 'onmousemove', this,
+ this.updateDrag);
+ this.eventKeypress = conn(document, 'onkeypress', this,
+ this.keyPress);
+ }
+ this.drags.push(draggable);
+ },
+
+ unregister: function (draggable) {
+ this.drags = MochiKit.Base.filter(function (d) {
+ return d != draggable;
+ }, this.drags);
+ if (this.drags.length === 0) {
+ var disc = MochiKit.Signal.disconnect;
+ disc(this.eventMouseUp);
+ disc(this.eventMouseMove);
+ disc(this.eventKeypress);
+ }
+ },
+
+ activate: function (draggable) {
+ // allows keypress events if window is not currently focused
+ // fails for Safari
+ window.focus();
+ this.activeDraggable = draggable;
+ },
+
+ deactivate: function () {
+ this.activeDraggable = null;
+ },
+
+ updateDrag: function (event) {
+ if (!this.activeDraggable) {
+ return;
+ }
+ var pointer = event.mouse();
+ // Mozilla-based browsers fire successive mousemove events with
+ // the same coordinates, prevent needless redrawing (moz bug?)
+ if (this._lastPointer && (MochiKit.Base.repr(this._lastPointer.page) ==
+ MochiKit.Base.repr(pointer.page))) {
+ 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);
+ }
+ },
+
+ notify: function (eventName, draggable, event) {
+ MochiKit.Signal.signal(this, eventName, draggable, event);
+ }
+};
+
+/** @id MochiKit.DragAndDrop.Draggable */
+MochiKit.DragAndDrop.Draggable = function (element, options) {
+ var cls = arguments.callee;
+ if (!(this instanceof cls)) {
+ return new cls(element, options);
+ }
+ this.__init__(element, options);
+};
+
+MochiKit.DragAndDrop.Draggable.prototype = {
+ /***
+
+ A draggable object. Simple instantiate :
+
+ new MochiKit.DragAndDrop.Draggable('myelement');
+
+ ***/
+ __class__ : MochiKit.DragAndDrop.Draggable,
+
+ __init__: function (element, /* optional */options) {
+ var v = MochiKit.Visual;
+ var b = MochiKit.Base;
+ options = b.update({
+
+ /** @id MochiKit.DragAndDrop.handle */
+ handle: false,
+
+ /** @id MochiKit.DragAndDrop.starteffect */
+ starteffect: function (innerelement) {
+ this._savedOpacity = MochiKit.Style.getStyle(innerelement, 'opacity') || 1.0;
+ new v.Opacity(innerelement, {duration:0.2, from:this._savedOpacity, to:0.7});
+ },
+ /** @id MochiKit.DragAndDrop.reverteffect */
+ reverteffect: function (innerelement, top_offset, left_offset) {
+ var dur = Math.sqrt(Math.abs(top_offset^2) +
+ Math.abs(left_offset^2))*0.02;
+ return new v.Move(innerelement,
+ {x: -left_offset, y: -top_offset, duration: dur});
+ },
+
+ /** @id MochiKit.DragAndDrop.endeffect */
+ endeffect: function (innerelement) {
+ new v.Opacity(innerelement, {duration:0.2, from:0.7, to:this._savedOpacity});
+ },
+
+ /** @id MochiKit.DragAndDrop.onchange */
+ onchange: b.noop,
+
+ /** @id MochiKit.DragAndDrop.zindex */
+ zindex: 1000,
+
+ /** @id MochiKit.DragAndDrop.revert */
+ revert: false,
+
+ /** @id MochiKit.DragAndDrop.scroll */
+ scroll: false,
+
+ /** @id MochiKit.DragAndDrop.scrollSensitivity */
+ scrollSensitivity: 20,
+
+ /** @id MochiKit.DragAndDrop.scrollSpeed */
+ scrollSpeed: 15,
+ // false, or xy or [x, y] or function (x, y){return [x, y];}
+
+ /** @id MochiKit.DragAndDrop.snap */
+ snap: false
+ }, options || {});
+
+ var d = MochiKit.DOM;
+ this.element = d.getElement(element);
+
+ if (options.handle && (typeof(options.handle) == 'string')) {
+ this.handle = d.getFirstElementByTagAndClassName(null,
+ options.handle, this.element);
+ }
+ if (!this.handle) {
+ this.handle = d.getElement(options.handle);
+ }
+ if (!this.handle) {
+ this.handle = this.element;
+ }
+
+ if (options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) {
+ options.scroll = d.getElement(options.scroll);
+ this._isScrollChild = MochiKit.DOM.isChildNode(this.element, options.scroll);
+ }
+
+ d.makePositioned(this.element); // fix IE
+
+ this.delta = this.currentDelta();
+ this.options = options;
+ this.dragging = false;
+
+ this.eventMouseDown = MochiKit.Signal.connect(this.handle,
+ 'onmousedown', this, this.initDrag);
+ MochiKit.DragAndDrop.Draggables.register(this);
+ },
+
+ /** @id MochiKit.DragAndDrop.destroy */
+ destroy: function () {
+ MochiKit.Signal.disconnect(this.eventMouseDown);
+ MochiKit.DragAndDrop.Draggables.unregister(this);
+ },
+
+ /** @id MochiKit.DragAndDrop.currentDelta */
+ currentDelta: function () {
+ var s = MochiKit.Style.getStyle;
+ return [
+ parseInt(s(this.element, 'left') || '0'),
+ parseInt(s(this.element, 'top') || '0')];
+ },
+
+ /** @id MochiKit.DragAndDrop.initDrag */
+ initDrag: function (event) {
+ if (!event.mouse().button.left) {
+ return;
+ }
+ // abort on form elements, fixes a Firefox issue
+ var src = event.target();
+ var tagName = (src.tagName || '').toUpperCase();
+ if (tagName === 'INPUT' || tagName === 'SELECT' ||
+ tagName === 'OPTION' || tagName === 'BUTTON' ||
+ tagName === 'TEXTAREA') {
+ return;
+ }
+
+ if (this._revert) {
+ this._revert.cancel();
+ this._revert = null;
+ }
+
+ var pointer = event.mouse();
+ var pos = MochiKit.Position.cumulativeOffset(this.element);
+ this.offset = [pointer.page.x - pos.x, pointer.page.y - pos.y];
+
+ MochiKit.DragAndDrop.Draggables.activate(this);
+ event.stop();
+ },
+
+ /** @id MochiKit.DragAndDrop.startDrag */
+ startDrag: function (event) {
+ this.dragging = true;
+ if (this.options.selectclass) {
+ MochiKit.DOM.addElementClass(this.element,
+ this.options.selectclass);
+ }
+ if (this.options.zindex) {
+ this.originalZ = parseInt(MochiKit.Style.getStyle(this.element,
+ 'z-index') || '0');
+ this.element.style.zIndex = this.options.zindex;
+ }
+
+ if (this.options.ghosting) {
+ this._clone = this.element.cloneNode(true);
+ this.ghostPosition = MochiKit.Position.absolutize(this.element);
+ this.element.parentNode.insertBefore(this._clone, this.element);
+ }
+
+ if (this.options.scroll) {
+ if (this.options.scroll == window) {
+ var where = this._getWindowScroll(this.options.scroll);
+ this.originalScrollLeft = where.left;
+ this.originalScrollTop = where.top;
+ } else {
+ this.originalScrollLeft = this.options.scroll.scrollLeft;
+ this.originalScrollTop = this.options.scroll.scrollTop;
+ }
+ }
+
+ MochiKit.DragAndDrop.Droppables.prepare(this.element);
+ MochiKit.DragAndDrop.Draggables.notify('start', this, event);
+ if (this.options.starteffect) {
+ this.options.starteffect(this.element);
+ }
+ },
+
+ /** @id MochiKit.DragAndDrop.updateDrag */
+ updateDrag: function (event, pointer) {
+ if (!this.dragging) {
+ this.startDrag(event);
+ }
+ MochiKit.Position.prepare();
+ MochiKit.DragAndDrop.Droppables.show(pointer, this.element);
+ MochiKit.DragAndDrop.Draggables.notify('drag', this, event);
+ this.draw(pointer);
+ this.options.onchange(this);
+
+ if (this.options.scroll) {
+ this.stopScrolling();
+ var p, q;
+ if (this.options.scroll == window) {
+ var s = this._getWindowScroll(this.options.scroll);
+ p = new MochiKit.Style.Coordinates(s.left, s.top);
+ q = new MochiKit.Style.Coordinates(s.left + s.width,
+ s.top + s.height);
+ } else {
+ p = MochiKit.Position.page(this.options.scroll);
+ p.x += this.options.scroll.scrollLeft;
+ p.y += this.options.scroll.scrollTop;
+ p.x += (window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft || 0);
+ p.y += (window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop || 0);
+ q = new MochiKit.Style.Coordinates(p.x + this.options.scroll.offsetWidth,
+ p.y + this.options.scroll.offsetHeight);
+ }
+ var speed = [0, 0];
+ if (pointer.page.x > (q.x - this.options.scrollSensitivity)) {
+ speed[0] = pointer.page.x - (q.x - this.options.scrollSensitivity);
+ } else if (pointer.page.x < (p.x + this.options.scrollSensitivity)) {
+ speed[0] = pointer.page.x - (p.x + this.options.scrollSensitivity);
+ }
+ if (pointer.page.y > (q.y - this.options.scrollSensitivity)) {
+ speed[1] = pointer.page.y - (q.y - this.options.scrollSensitivity);
+ } else if (pointer.page.y < (p.y + this.options.scrollSensitivity)) {
+ speed[1] = pointer.page.y - (p.y + this.options.scrollSensitivity);
+ }
+ this.startScrolling(speed);
+ }
+
+ // fix AppleWebKit rendering
+ if (/AppleWebKit'/.test(navigator.appVersion)) {
+ window.scrollBy(0, 0);
+ }
+ event.stop();
+ },
+
+ /** @id MochiKit.DragAndDrop.finishDrag */
+ finishDrag: function (event, success) {
+ var dr = MochiKit.DragAndDrop;
+ this.dragging = false;
+ if (this.options.selectclass) {
+ MochiKit.DOM.removeElementClass(this.element,
+ this.options.selectclass);
+ }
+
+ if (this.options.ghosting) {
+ // XXX: from a user point of view, it would be better to remove
+ // the node only *after* the MochiKit.Visual.Move end when used
+ // with revert.
+ MochiKit.Position.relativize(this.element, this.ghostPosition);
+ MochiKit.DOM.removeElement(this._clone);
+ this._clone = null;
+ }
+
+ if (success) {
+ dr.Droppables.fire(event, this.element);
+ }
+ dr.Draggables.notify('end', 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._revert = 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);
+ }
+
+ dr.Draggables.deactivate();
+ dr.Droppables.reset(this.element);
+ },
+
+ /** @id MochiKit.DragAndDrop.keyPress */
+ keyPress: function (event) {
+ if (event.key().string != "KEY_ESCAPE") {
+ return;
+ }
+ this.finishDrag(event, false);
+ event.stop();
+ },
+
+ /** @id MochiKit.DragAndDrop.endDrag */
+ endDrag: function (event) {
+ if (!this.dragging) {
+ return;
+ }
+ this.stopScrolling();
+ this.finishDrag(event, true);
+ event.stop();
+ },
+
+ /** @id MochiKit.DragAndDrop.draw */
+ draw: function (point) {
+ var pos = MochiKit.Position.cumulativeOffset(this.element);
+ var d = this.currentDelta();
+ pos.x -= d[0];
+ pos.y -= d[1];
+
+ if (this.options.scroll && (this.options.scroll != window && this._isScrollChild)) {
+ pos.x -= this.options.scroll.scrollLeft - this.originalScrollLeft;
+ pos.y -= this.options.scroll.scrollTop - this.originalScrollTop;
+ }
+
+ var p = [point.page.x - pos.x - this.offset[0],
+ point.page.y - pos.y - this.offset[1]];
+
+ 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) {
+ var i = -1;
+ p = MochiKit.Base.map(MochiKit.Base.bind(function (v) {
+ i += 1;
+ return Math.round(v/this.options.snap[i]) *
+ this.options.snap[i];
+ }, this), p);
+ } else {
+ p = MochiKit.Base.map(MochiKit.Base.bind(function (v) {
+ return Math.round(v/this.options.snap) *
+ this.options.snap;
+ }, this), p);
+ }
+ }
+ }
+ 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
+ }
+ },
+
+ /** @id MochiKit.DragAndDrop.stopScrolling */
+ stopScrolling: function () {
+ if (this.scrollInterval) {
+ clearInterval(this.scrollInterval);
+ this.scrollInterval = null;
+ MochiKit.DragAndDrop.Draggables._lastScrollPointer = null;
+ }
+ },
+
+ /** @id MochiKit.DragAndDrop.startScrolling */
+ startScrolling: function (speed) {
+ if (!speed[0] && !speed[1]) {
+ return;
+ }
+ this.scrollSpeed = [speed[0] * this.options.scrollSpeed,
+ speed[1] * this.options.scrollSpeed];
+ this.lastScrolled = new Date();
+ this.scrollInterval = setInterval(MochiKit.Base.bind(this.scroll, this), 10);
+ },
+
+ /** @id MochiKit.DragAndDrop.scroll */
+ scroll: function () {
+ var current = new Date();
+ var delta = current - this.lastScrolled;
+ this.lastScrolled = current;
+
+ if (this.options.scroll == window) {
+ var s = this._getWindowScroll(this.options.scroll);
+ if (this.scrollSpeed[0] || this.scrollSpeed[1]) {
+ var dm = delta / 1000;
+ this.options.scroll.scrollTo(s.left + dm * this.scrollSpeed[0],
+ s.top + dm * this.scrollSpeed[1]);
+ }
+ } else {
+ this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000;
+ this.options.scroll.scrollTop += this.scrollSpeed[1] * delta / 1000;
+ }
+
+ var d = MochiKit.DragAndDrop;
+
+ MochiKit.Position.prepare();
+ d.Droppables.show(d.Draggables._lastPointer, this.element);
+ d.Draggables.notify('drag', this);
+ if (this._isScrollChild) {
+ d.Draggables._lastScrollPointer = d.Draggables._lastScrollPointer || d.Draggables._lastPointer;
+ d.Draggables._lastScrollPointer.x += this.scrollSpeed[0] * delta / 1000;
+ d.Draggables._lastScrollPointer.y += this.scrollSpeed[1] * delta / 1000;
+ if (d.Draggables._lastScrollPointer.x < 0) {
+ d.Draggables._lastScrollPointer.x = 0;
+ }
+ if (d.Draggables._lastScrollPointer.y < 0) {
+ d.Draggables._lastScrollPointer.y = 0;
+ }
+ this.draw(d.Draggables._lastScrollPointer);
+ }
+
+ this.options.onchange(this);
+ },
+
+ _getWindowScroll: function (win) {
+ var vp, w, h;
+ MochiKit.DOM.withWindow(win, function () {
+ vp = MochiKit.Style.getViewportPosition(win.document);
+ });
+ if (win.innerWidth) {
+ w = win.innerWidth;
+ h = win.innerHeight;
+ } else if (win.document.documentElement && win.document.documentElement.clientWidth) {
+ w = win.document.documentElement.clientWidth;
+ h = win.document.documentElement.clientHeight;
+ } else {
+ w = win.document.body.offsetWidth;
+ h = win.document.body.offsetHeight;
+ }
+ return {top: vp.x, left: vp.y, width: w, height: h};
+ },
+
+ /** @id MochiKit.DragAndDrop.repr */
+ repr: function () {
+ return '[' + this.__class__.NAME + ", options:" + MochiKit.Base.repr(this.options) + "]";
+ }
+};
+
+MochiKit.DragAndDrop.__new__ = function () {
+ MochiKit.Base.nameFunctions(this);
+
+ this.EXPORT_TAGS = {
+ ":common": this.EXPORT,
+ ":all": MochiKit.Base.concat(this.EXPORT, this.EXPORT_OK)
+ };
+};
+
+MochiKit.DragAndDrop.__new__();
+
+MochiKit.Base._exportSymbols(this, MochiKit.DragAndDrop);
+