/* * jQuery UI Draggable * * Copyright (c) 2008 Paul Bakaus * Dual licensed under the MIT (MIT-LICENSE.txt) * and GPL (GPL-LICENSE.txt) licenses. * * http://docs.jquery.com/UI/Draggables * * Depends: * ui.base.js * * Revision: $Id: ui.draggable.js 5194 2008-04-04 12:30:10Z paul.bakaus $ */ ;(function($) { $.fn.extend({ draggable: function(options) { var args = Array.prototype.slice.call(arguments, 1); return this.each(function() { if (typeof options == "string") { var drag = $.data(this, "draggable"); if(drag) drag[options].apply(drag, args); } else if(!$.data(this, "draggable")) new $.ui.draggable(this, options); }); } }); $.ui.draggable = function(element, options) { //Initialize needed constants var self = this; this.element = $(element); $.data(element, "draggable", this); this.element.addClass("ui-draggable"); //Prepare the passed options this.options = $.extend({}, options); var o = this.options; $.extend(o, { helper: o.ghosting == true ? 'clone' : (o.helper || 'original'), handle : o.handle ? ($(o.handle, element)[0] ? $(o.handle, element) : this.element) : this.element, appendTo: o.appendTo || 'parent' }); $(element).bind("setData.draggable", function(event, key, value){ self.options[key] = value; }).bind("getData.draggable", function(event, key){ return self.options[key]; }); //Initialize mouse events for interaction $(o.handle).mouseInteraction({ executor: this, delay: o.delay, distance: o.distance || 1, dragPrevention: o.cancel || o.cancel === '' ? o.cancel.toLowerCase().split(',') : ['input','textarea','button','select','option'], start: this.start, stop: this.stop, drag: this.drag, condition: function(e) { return !(e.target.className.indexOf("ui-resizable-handle") != -1 || this.options.disabled); } }); //Position the node if(o.helper == 'original' && (this.element.css('position') == 'static' || this.element.css('position') == '')) this.element.css('position', 'relative'); //Prepare cursorAt if(o.cursorAt && o.cursorAt.constructor == Array) o.cursorAt = { left: o.cursorAt[0], top: o.cursorAt[1] }; }; $.extend($.ui.draggable.prototype, { plugins: {}, ui: function(e) { return { helper: this.helper, position: this.position, absolutePosition: this.positionAbs, instance: this, options: this.options, element: this.element }; }, propagate: function(n,e) { $.ui.plugin.call(this, n, [e, this.ui()]); return this.element.triggerHandler(n == "drag" ? n : "drag"+n, [e, this.ui()], this.options[n]); }, destroy: function() { if(!$.data(this.element[0], 'draggable')) return; this.options.handle.removeMouseInteraction(); this.element .removeClass("ui-draggable ui-draggable-disabled") .removeData("draggable") .unbind(".draggable"); }, enable: function() { this.element.removeClass("ui-draggable-disabled"); this.options.disabled = false; }, disable: function() { this.element.addClass("ui-draggable-disabled"); this.options.disabled = true; }, setContrains: function(minLeft,maxLeft,minTop,maxTop) { this.minLeft = minLeft; this.maxLeft = maxLeft; this.minTop = minTop; this.maxTop = maxTop; this.constrainsSet = true; }, checkConstrains: function() { if(!this.constrainsSet) return; if(this.position.left < this.minLeft) this.position.left = this.minLeft; if(this.position.left > this.maxLeft - this.helperProportions.width) this.position.left = this.maxLeft - this.helperProportions.width; if(this.position.top < this.minTop) this.position.top = this.minTop; if(this.position.top > this.maxTop - this.helperProportions.height) this.position.top = this.maxTop - this.helperProportions.height; }, recallOffset: function(e) { var elementPosition = { left: this.elementOffset.left - this.offsetParentOffset.left, top: this.elementOffset.top - this.offsetParentOffset.top }; var r = this.helper.css('position') == 'relative'; //Generate the original position this.originalPosition = { left: (r ? parseInt(this.helper.css('left'),10) || 0 : elementPosition.left + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollLeft)), top: (r ? parseInt(this.helper.css('top'),10) || 0 : elementPosition.top + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollTop)) }; //Generate a flexible offset that will later be subtracted from e.pageX/Y this.offset = {left: this._pageX - this.originalPosition.left, top: this._pageY - this.originalPosition.top }; }, start: function(e) { var o = this.options; if($.ui.ddmanager) $.ui.ddmanager.current = this; //Create and append the visible helper this.helper = typeof o.helper == 'function' ? $(o.helper.apply(this.element[0], [e])) : (o.helper == 'clone' ? this.element.clone().appendTo((o.appendTo == 'parent' ? this.element[0].parentNode : o.appendTo)) : this.element); if(this.helper[0] != this.element[0]) this.helper.css('position', 'absolute'); if(!this.helper.parents('body').length) this.helper.appendTo((o.appendTo == 'parent' ? this.element[0].parentNode : o.appendTo)); //Find out the next positioned parent this.offsetParent = (function(cp) { while(cp) { if(cp.style && (/(absolute|relative|fixed)/).test($.css(cp,'position'))) return $(cp); cp = cp.parentNode ? cp.parentNode : null; }; return $("body"); })(this.helper[0].parentNode); //Prepare variables for position generation this.elementOffset = this.element.offset(); this.offsetParentOffset = this.offsetParent.offset(); var elementPosition = { left: this.elementOffset.left - this.offsetParentOffset.left, top: this.elementOffset.top - this.offsetParentOffset.top }; this._pageX = e.pageX; this._pageY = e.pageY; this.clickOffset = { left: e.pageX - this.elementOffset.left, top: e.pageY - this.elementOffset.top }; var r = this.helper.css('position') == 'relative'; //Generate the original position this.originalPosition = { left: (r ? parseInt(this.helper.css('left'),10) || 0 : elementPosition.left + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollLeft)), top: (r ? parseInt(this.helper.css('top'),10) || 0 : elementPosition.top + (this.offsetParent[0] == document.body ? 0 : this.offsetParent[0].scrollTop)) }; //If we have a fixed element, we must subtract the scroll offset again if(this.element.css('position') == 'fixed') { this.originalPosition.top -= this.offsetParent[0] == document.body ? $(document).scrollTop() : this.offsetParent[0].scrollTop; this.originalPosition.left -= this.offsetParent[0] == document.body ? $(document).scrollLeft() : this.offsetParent[0].scrollLeft; } //Generate a flexible offset that will later be subtracted from e.pageX/Y this.offset = {left: e.pageX - this.originalPosition.left, top: e.pageY - this.originalPosition.top }; //Substract margins if(this.element[0] != this.helper[0]) { this.offset.left += parseInt(this.element.css('marginLeft'),10) || 0; this.offset.top += parseInt(this.element.css('marginTop'),10) || 0; } //Call plugins and callbacks this.propagate("start", e); this.helperProportions = { width: this.helper.outerWidth(), height: this.helper.outerHeight() }; if ($.ui.ddmanager && !o.dropBehaviour) $.ui.ddmanager.prepareOffsets(this, e); //If we have something in cursorAt, we'll use it if(o.cursorAt) { if(o.cursorAt.top != undefined || o.cursorAt.bottom != undefined) { this.offset.top -= this.clickOffset.top - (o.cursorAt.top != undefined ? o.cursorAt.top : (this.helperProportions.height - o.cursorAt.bottom)); this.clickOffset.top = (o.cursorAt.top != undefined ? o.cursorAt.top : (this.helperProportions.height - o.cursorAt.bottom)); } if(o.cursorAt.left != undefined || o.cursorAt.right != undefined) { this.offset.left -= this.clickOffset.left - (o.cursorAt.left != undefined ? o.cursorAt.left : (this.helperProportions.width - o.cursorAt.right)); this.clickOffset.left = (o.cursorAt.left != undefined ? o.cursorAt.left : (this.helperProportions.width - o.cursorAt.right)); } } return false; }, clear: function() { if($.ui.ddmanager) $.ui.ddmanager.current = null; this.helper = null; }, stop: function(e) { //If we are using droppables, inform the manager about the drop if ($.ui.ddmanager && !this.options.dropBehaviour) $.ui.ddmanager.drop(this, e); //Call plugins and trigger callbacks this.propagate("stop", e); if(this.cancelHelperRemoval) return false; if(this.options.helper != 'original') this.helper.remove(); this.clear(); return false; }, drag: function(e) { //Compute the helpers position this.position = { top: e.pageY - this.offset.top, left: e.pageX - this.offset.left }; this.positionAbs = { left: e.pageX - this.clickOffset.left, top: e.pageY - this.clickOffset.top }; //Call plugins and callbacks this.checkConstrains(); this.position = this.propagate("drag", e) || this.position; this.checkConstrains(); $(this.helper).css({ left: this.position.left+'px', top: this.position.top+'px' }); // Stick the helper to the cursor if($.ui.ddmanager) $.ui.ddmanager.drag(this, e); return false; } }); /* * Draggable Extensions */ $.ui.plugin.add("draggable", "cursor", { start: function(e, ui) { var t = $('body'); if (t.css("cursor")) ui.options._cursor = t.css("cursor"); t.css("cursor", ui.options.cursor); }, stop: function(e, ui) { if (ui.options._cursor) $('body').css("cursor", ui.options._cursor); } }); $.ui.plugin.add("draggable", "zIndex", { start: function(e, ui) { var t = $(ui.helper); if(t.css("zIndex")) ui.options._zIndex = t.css("zIndex"); t.css('zIndex', ui.options.zIndex); }, stop: function(e, ui) { if(ui.options._zIndex) $(ui.helper).css('zIndex', ui.options._zIndex); } }); $.ui.plugin.add("draggable", "opacity", { start: function(e, ui) { var t = $(ui.helper); if(t.css("opacity")) ui.options._opacity = t.css("opacity"); t.css('opacity', ui.options.opacity); }, stop: function(e, ui) { if(ui.options._opacity) $(ui.helper).css('opacity', ui.options._opacity); } }); $.ui.plugin.add("draggable", "revert", { stop: function(e, ui) { var self = ui.instance, helper = $(self.helper); self.cancelHelperRemoval = true; $(ui.helper).animate({ left: self.originalPosition.left, top: self.originalPosition.top }, parseInt(ui.options.revert, 10) || 500, function() { if(ui.options.helper != 'original') helper.remove(); if (!helper) self.clear(); }); } }); $.ui.plugin.add("draggable", "iframeFix", { start: function(e, ui) { var o = ui.options; if(ui.instance.slowMode) return; // Make clones on top of iframes (only if we are not in slowMode) if(o.iframeFix.constructor == Array) { for(var i=0;i').css("width", $(o.iframeFix[i])[0].offsetWidth+"px").css("height", $(o.iframeFix[i])[0].offsetHeight+"px").css("position", "absolute").css("opacity", "0.001").css("z-index", "1000").css("top", co.top+"px").css("left", co.left+"px").appendTo("body"); } } else { $("iframe").each(function() { var co = $(this).offset({ border: false }); $('
').css("width", this.offsetWidth+"px").css("height", this.offsetHeight+"px").css("position", "absolute").css("opacity", "0.001").css("z-index", "1000").css("top", co.top+"px").css("left", co.left+"px").appendTo("body"); }); } }, stop: function(e, ui) { if(ui.options.iframeFix) $("div.DragDropIframeFix").each(function() { this.parentNode.removeChild(this); }); //Remove frame helpers } }); $.ui.plugin.add("draggable", "containment", { start: function(e, ui) { var o = ui.options; var self = ui.instance; if((o.containment.left != undefined || o.containment.constructor == Array) && !o._containment) return; if(!o._containment) o._containment = o.containment; if(o._containment == 'parent') o._containment = this[0].parentNode; if(o._containment == 'document') { o.containment = [ 0, 0, $(document).width(), ($(document).height() || document.body.parentNode.scrollHeight) ]; } else { //I'm a node, so compute top/left/right/bottom var ce = $(o._containment)[0]; var co = $(o._containment).offset(); o.containment = [ co.left, co.top, co.left+(ce.offsetWidth || ce.scrollWidth), co.top+(ce.offsetHeight || ce.scrollHeight) ]; } var c = o.containment; ui.instance.setContrains( c[0] - (self.offset.left - self.clickOffset.left), //min left c[2] - (self.offset.left - self.clickOffset.left), //max left c[1] - (self.offset.top - self.clickOffset.top), //min top c[3] - (self.offset.top - self.clickOffset.top) //max top ); } }); $.ui.plugin.add("draggable", "grid", { drag: function(e, ui) { var o = ui.options; var newLeft = ui.instance.originalPosition.left + Math.round((e.pageX - ui.instance._pageX) / o.grid[0]) * o.grid[0]; var newTop = ui.instance.originalPosition.top + Math.round((e.pageY - ui.instance._pageY) / o.grid[1]) * o.grid[1]; ui.instance.position.left = newLeft; ui.instance.position.top = newTop; } }); $.ui.plugin.add("draggable", "axis", { drag: function(e, ui) { var o = ui.options; if(o.constraint) o.axis = o.constraint; //Legacy check switch (o.axis) { case 'x' : ui.instance.position.top = ui.instance.originalPosition.top; break; case 'y' : ui.instance.position.left = ui.instance.originalPosition.left; break; } } }); $.ui.plugin.add("draggable", "scroll", { start: function(e, ui) { var o = ui.options; o.scrollSensitivity = o.scrollSensitivity || 20; o.scrollSpeed = o.scrollSpeed || 20; ui.instance.overflowY = function(el) { do { if(/auto|scroll/.test(el.css('overflow')) || (/auto|scroll/).test(el.css('overflow-y'))) return el; el = el.parent(); } while (el[0].parentNode); return $(document); }(this); ui.instance.overflowX = function(el) { do { if(/auto|scroll/.test(el.css('overflow')) || (/auto|scroll/).test(el.css('overflow-x'))) return el; el = el.parent(); } while (el[0].parentNode); return $(document); }(this); }, drag: function(e, ui) { var o = ui.options; var i = ui.instance; if(i.overflowY[0] != document && i.overflowY[0].tagName != 'HTML') { if(i.overflowY[0].offsetHeight - (ui.position.top - i.overflowY[0].scrollTop + i.clickOffset.top) < o.scrollSensitivity) i.overflowY[0].scrollTop = i.overflowY[0].scrollTop + o.scrollSpeed; if((ui.position.top - i.overflowY[0].scrollTop + i.clickOffset.top) < o.scrollSensitivity) i.overflowY[0].scrollTop = i.overflowY[0].scrollTop - o.scrollSpeed; } else { //$(document.body).append('

'+(e.pageY - $(document).scrollTop())+'

'); if(e.pageY - $(document).scrollTop() < o.scrollSensitivity) $(document).scrollTop($(document).scrollTop() - o.scrollSpeed); if($(window).height() - (e.pageY - $(document).scrollTop()) < o.scrollSensitivity) $(document).scrollTop($(document).scrollTop() + o.scrollSpeed); } if(i.overflowX[0] != document && i.overflowX[0].tagName != 'HTML') { if(i.overflowX[0].offsetWidth - (ui.position.left - i.overflowX[0].scrollLeft + i.clickOffset.left) < o.scrollSensitivity) i.overflowX[0].scrollLeft = i.overflowX[0].scrollLeft + o.scrollSpeed; if((ui.position.top - i.overflowX[0].scrollLeft + i.clickOffset.left) < o.scrollSensitivity) i.overflowX[0].scrollLeft = i.overflowX[0].scrollLeft - o.scrollSpeed; } else { if(e.pageX - $(document).scrollLeft() < o.scrollSensitivity) $(document).scrollLeft($(document).scrollLeft() - o.scrollSpeed); if($(window).width() - (e.pageX - $(document).scrollLeft()) < o.scrollSensitivity) $(document).scrollLeft($(document).scrollLeft() + o.scrollSpeed); } ui.instance.recallOffset(e); } }); $.ui.plugin.add("draggable", "snap", { start: function(e, ui) { ui.instance.snapElements = []; $(ui.options.snap === true ? '.ui-draggable' : ui.options.snap).each(function() { var $t = $(this); var $o = $t.offset(); if(this != ui.instance.element[0]) ui.instance.snapElements.push({ item: this, width: $t.outerWidth(), height: $t.outerHeight(), top: $o.top, left: $o.left }); }); }, drag: function(e, ui) { var d = ui.options.snapTolerance || 20; var x1 = ui.absolutePosition.left, x2 = x1 + ui.instance.helperProportions.width, y1 = ui.absolutePosition.top, y2 = y1 + ui.instance.helperProportions.height; for (var i = ui.instance.snapElements.length - 1; i >= 0; i--){ var l = ui.instance.snapElements[i].left, r = l + ui.instance.snapElements[i].width, t = ui.instance.snapElements[i].top, b = t + ui.instance.snapElements[i].height; //Yes, I know, this is insane ;) if(!((l-d < x1 && x1 < r+d && t-d < y1 && y1 < b+d) || (l-d < x1 && x1 < r+d && t-d < y2 && y2 < b+d) || (l-d < x2 && x2 < r+d && t-d < y1 && y1 < b+d) || (l-d < x2 && x2 < r+d && t-d < y2 && y2 < b+d))) continue; if(ui.options.snapMode != 'inner') { var ts = Math.abs(t - y2) <= 20; var bs = Math.abs(b - y1) <= 20; var ls = Math.abs(l - x2) <= 20; var rs = Math.abs(r - x1) <= 20; if(ts) ui.position.top = t - ui.instance.offset.top + ui.instance.clickOffset.top - ui.instance.helperProportions.height; if(bs) ui.position.top = b - ui.instance.offset.top + ui.instance.clickOffset.top; if(ls) ui.position.left = l - ui.instance.offset.left + ui.instance.clickOffset.left - ui.instance.helperProportions.width; if(rs) ui.position.left = r - ui.instance.offset.left + ui.instance.clickOffset.left; } if(ui.options.snapMode != 'outer') { var ts = Math.abs(t - y1) <= 20; var bs = Math.abs(b - y2) <= 20; var ls = Math.abs(l - x1) <= 20; var rs = Math.abs(r - x2) <= 20; if(ts) ui.position.top = t - ui.instance.offset.top + ui.instance.clickOffset.top; if(bs) ui.position.top = b - ui.instance.offset.top + ui.instance.clickOffset.top - ui.instance.helperProportions.height; if(ls) ui.position.left = l - ui.instance.offset.left + ui.instance.clickOffset.left; if(rs) ui.position.left = r - ui.instance.offset.left + ui.instance.clickOffset.left - ui.instance.helperProportions.width; } }; } }); $.ui.plugin.add("draggable", "connectToSortable", { start: function(e,ui) { ui.instance.sortable = $.data($(ui.options.connectToSortable)[0], 'sortable'); ui.instance.sortableOffset = ui.instance.sortable.element.offset(); ui.instance.sortableOuterWidth = ui.instance.sortable.element.outerWidth(); ui.instance.sortableOuterHeight = ui.instance.sortable.element.outerHeight(); if(ui.instance.sortable.options.revert) ui.instance.sortable.shouldRevert = true; }, stop: function(e,ui) { //If we are still over the sortable, we fake the stop event of the sortable, but also remove helper var inst = ui.instance.sortable; if(inst.isOver) { inst.isOver = 0; ui.instance.cancelHelperRemoval = true; //Don't remove the helper in the draggable instance inst.cancelHelperRemoval = false; //Remove it in the sortable instance (so sortable plugins like revert still work) if(inst.shouldRevert) inst.options.revert = true; //revert here inst.stop(e); inst.options.helper = "original"; } }, drag: function(e,ui) { //This is handy: We reuse the intersectsWith method for checking if the current draggable helper //intersects with the sortable container var inst = ui.instance.sortable; ui.instance.position.absolute = ui.absolutePosition; //Sorry, this is an ugly API fix if(inst.intersectsWith.call(ui.instance, { left: ui.instance.sortableOffset.left, top: ui.instance.sortableOffset.top, width: ui.instance.sortableOuterWidth, height: ui.instance.sortableOuterHeight })) { //If it intersects, we use a little isOver variable and set it once, so our move-in stuff gets fired only once if(!inst.isOver) { inst.isOver = 1; //Cache the width/height of the new helper var height = inst.options.placeholderElement ? $(inst.options.placeholderElement, $(inst.options.items, inst.element)).innerHeight() : $(inst.options.items, inst.element).innerHeight(); var width = inst.options.placeholderElement ? $(inst.options.placeholderElement, $(inst.options.items, inst.element)).innerWidth() : $(inst.options.items, inst.element).innerWidth(); //Now we fake the start of dragging for the sortable instance, //by cloning the list group item, appending it to the sortable and using it as inst.currentItem //We can then fire the start event of the sortable with our passed browser event, and our own helper (so it doesn't create a new one) inst.currentItem = $(this).clone().appendTo(inst.element); inst.options.helper = function() { return ui.helper[0]; }; inst.start(e); //Because the browser event is way off the new appended portlet, we modify a couple of variables to reflect the changes inst.clickOffset.top = ui.instance.clickOffset.top; inst.clickOffset.left = ui.instance.clickOffset.left; inst.offset.left -= ui.absolutePosition.left - inst.position.absolute.left; inst.offset.top -= ui.absolutePosition.top - inst.position.absolute.top; //Do a nifty little helper animation: Animate it to the portlet's size (just takes the first 'li' element in the sortable now) inst.helperProportions = { width: width, height: height}; //We have to reset the helper proportions, because we are doing our animation there ui.helper.animate({ height: height, width: width}, 500); ui.instance.propagate("toSortable", e); } //Provided we did all the previous steps, we can fire the drag event of the sortable on every draggable drag, when it intersects with the sortable if(inst.currentItem) inst.drag(e); } else { //If it doesn't intersect with the sortable, and it intersected before, //we fake the drag stop of the sortable, but make sure it doesn't remove the helper by using cancelHelperRemoval if(inst.isOver) { inst.isOver = 0; inst.cancelHelperRemoval = true; inst.options.revert = false; //No revert here inst.stop(e); inst.options.helper = "original"; //Now we remove our currentItem, the list group clone again, and the placeholder, and animate the helper back to it's original size inst.currentItem.remove(); inst.placeholder.remove(); ui.helper.animate({ height: this.innerHeight(), width: this.innerWidth() }, 500); ui.instance.propagate("fromSortable", e); } }; } }) //TODO: wrapHelper })(jQuery);