/* * 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.core.js * * Revision: $Id: ui.draggable.js 5672 2008-05-23 04:11:30Z braeker $ */ (function($) { $.widget("ui.draggable", $.extend($.ui.mouse, { init: function() { //Initialize needed constants var o = this.options; //Position the node if (o.helper == 'original' && !(/(relative|absolute|fixed)/).test(this.element.css('position'))) this.element.css('position', 'relative'); this.element.addClass('ui-draggable'); (o.disabled && this.element.addClass('ui-draggable-disabled')); this.mouseInit(); }, mouseStart: function(e) { var o = this.options; if (this.helper || o.disabled || $(e.target).is('.ui-resizable-handle')) return false; var handle = !this.options.handle || !$(this.options.handle, this.element).length ? true : false; $(this.options.handle, this.element).find("*").andSelf().each(function() { if(this == e.target) handle = true; }); if (!handle) return false; if($.ui.ddmanager) $.ui.ddmanager.current = this; //Create and append the visible helper this.helper = $.isFunction(o.helper) ? $(o.helper.apply(this.element[0], [e])) : (o.helper == 'clone' ? this.element.clone() : this.element); if(!this.helper.parents('body').length) this.helper.appendTo((o.appendTo == 'parent' ? this.element[0].parentNode : o.appendTo)); if(this.helper[0] != this.element[0] && !(/(fixed|absolute)/).test(this.helper.css("position"))) this.helper.css("position", "absolute"); /* * - Position generation - * This block generates everything position related - it's the core of draggables. */ this.margins = { //Cache the margins left: (parseInt(this.element.css("marginLeft"),10) || 0), top: (parseInt(this.element.css("marginTop"),10) || 0) }; this.cssPosition = this.helper.css("position"); //Store the helper's css position this.offset = this.element.offset(); //The element's absolute position on the page this.offset = { //Substract the margins from the element's absolute offset top: this.offset.top - this.margins.top, left: this.offset.left - this.margins.left }; this.offset.click = { //Where the click happened, relative to the element left: e.pageX - this.offset.left, top: e.pageY - this.offset.top }; this.offsetParent = this.helper.offsetParent(); var po = this.offsetParent.offset(); //Get the offsetParent and cache its position if(this.offsetParent[0] == document.body && $.browser.mozilla) po = { top: 0, left: 0 }; //Ugly FF3 fix this.offset.parent = { //Store its position plus border top: po.top + (parseInt(this.offsetParent.css("borderTopWidth"),10) || 0), left: po.left + (parseInt(this.offsetParent.css("borderLeftWidth"),10) || 0) }; var p = this.element.position(); //This is a relative to absolute position minus the actual position calculation - only used for relative positioned helpers this.offset.relative = this.cssPosition == "relative" ? { top: p.top - (parseInt(this.helper.css("top"),10) || 0) + this.offsetParent[0].scrollTop, left: p.left - (parseInt(this.helper.css("left"),10) || 0) + this.offsetParent[0].scrollLeft } : { top: 0, left: 0 }; this.originalPosition = this.generatePosition(e); //Generate the original position this.helperProportions = { width: this.helper.outerWidth(), height: this.helper.outerHeight() };//Cache the helper size if(o.cursorAt) { if(o.cursorAt.left != undefined) this.offset.click.left = o.cursorAt.left + this.margins.left; if(o.cursorAt.right != undefined) this.offset.click.left = this.helperProportions.width - o.cursorAt.right + this.margins.left; if(o.cursorAt.top != undefined) this.offset.click.top = o.cursorAt.top + this.margins.top; if(o.cursorAt.bottom != undefined) this.offset.click.top = this.helperProportions.height - o.cursorAt.bottom + this.margins.top; } /* * - Position constraining - * Here we prepare position constraining like grid and containment. */ if(o.containment) { if(o.containment == 'parent') o.containment = this.helper[0].parentNode; if(o.containment == 'document' || o.containment == 'window') this.containment = [ 0 - this.offset.relative.left - this.offset.parent.left, 0 - this.offset.relative.top - this.offset.parent.top, $(o.containment == 'document' ? document : window).width() - this.offset.relative.left - this.offset.parent.left - this.helperProportions.width - this.margins.left - (parseInt(this.element.css("marginRight"),10) || 0), ($(o.containment == 'document' ? document : window).height() || document.body.parentNode.scrollHeight) - this.offset.relative.top - this.offset.parent.top - this.helperProportions.height - this.margins.top - (parseInt(this.element.css("marginBottom"),10) || 0) ]; if(!(/^(document|window|parent)$/).test(o.containment)) { var ce = $(o.containment)[0]; var co = $(o.containment).offset(); this.containment = [ co.left + (parseInt($(ce).css("borderLeftWidth"),10) || 0) - this.offset.relative.left - this.offset.parent.left, co.top + (parseInt($(ce).css("borderTopWidth"),10) || 0) - this.offset.relative.top - this.offset.parent.top, co.left+Math.max(ce.scrollWidth,ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) || 0) - this.offset.relative.left - this.offset.parent.left - this.helperProportions.width - this.margins.left - (parseInt(this.element.css("marginRight"),10) || 0), co.top+Math.max(ce.scrollHeight,ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) || 0) - this.offset.relative.top - this.offset.parent.top - this.helperProportions.height - this.margins.top - (parseInt(this.element.css("marginBottom"),10) || 0) ]; } } //Call plugins and callbacks this.propagate("start", e); this.helperProportions = { width: this.helper.outerWidth(), height: this.helper.outerHeight() };//Recache the helper size if ($.ui.ddmanager && !o.dropBehaviour) $.ui.ddmanager.prepareOffsets(this, e); this.helper.addClass("ui-draggable-dragging"); this.mouseDrag(e); //Execute the drag once - this causes the helper not to be visible before getting its correct position return true; }, convertPositionTo: function(d, pos) { if(!pos) pos = this.position; var mod = d == "absolute" ? 1 : -1; return { top: ( pos.top // the calculated relative position + this.offset.relative.top * mod // Only for relative positioned nodes: Relative offset from element to offset parent + this.offset.parent.top * mod // The offsetParent's offset without borders (offset + border) - (this.cssPosition == "fixed" || (this.cssPosition == "absolute" && this.offsetParent[0] == document.body) ? 0 : this.offsetParent[0].scrollTop) * mod // The offsetParent's scroll position, not if the element is fixed + (this.cssPosition == "fixed" ? this.offsetParent[0].scrollTop : 0) * mod + this.margins.top * mod //Add the margin (you don't want the margin counting in intersection methods) ), left: ( pos.left // the calculated relative position + this.offset.relative.left * mod // Only for relative positioned nodes: Relative offset from element to offset parent + this.offset.parent.left * mod // The offsetParent's offset without borders (offset + border) - (this.cssPosition == "fixed" || (this.cssPosition == "absolute" && this.offsetParent[0] == document.body) ? 0 : this.offsetParent[0].scrollLeft) * mod // The offsetParent's scroll position, not if the element is fixed + (this.cssPosition == "fixed" ? this.offsetParent[0].scrollLeft : 0) * mod + this.margins.left * mod //Add the margin (you don't want the margin counting in intersection methods) ) }; }, generatePosition: function(e) { var o = this.options; var position = { top: ( e.pageY // The absolute mouse position - this.offset.click.top // Click offset (relative to the element) - this.offset.relative.top // Only for relative positioned nodes: Relative offset from element to offset parent - this.offset.parent.top // The offsetParent's offset without borders (offset + border) + (this.cssPosition == "fixed" || (this.cssPosition == "absolute" && this.offsetParent[0] == document.body) ? 0 : this.offsetParent[0].scrollTop) // The offsetParent's scroll position, not if the element is fixed - (this.cssPosition == "fixed" ? this.offsetParent[0].scrollTop : 0) ), left: ( e.pageX // The absolute mouse position - this.offset.click.left // Click offset (relative to the element) - this.offset.relative.left // Only for relative positioned nodes: Relative offset from element to offset parent - this.offset.parent.left // The offsetParent's offset without borders (offset + border) + (this.cssPosition == "fixed" || (this.cssPosition == "absolute" && this.offsetParent[0] == document.body) ? 0 : this.offsetParent[0].scrollLeft) // The offsetParent's scroll position, not if the element is fixed - (this.cssPosition == "fixed" ? this.offsetParent[0].scrollLeft : 0) ) }; if(!this.originalPosition) return position; //If we are not dragging yet, we won't check for options /* * - Position constraining - * Constrain the position to a mix of grid, containment. */ if(this.containment) { if(position.left < this.containment[0]) position.left = this.containment[0]; if(position.top < this.containment[1]) position.top = this.containment[1]; if(position.left > this.containment[2]) position.left = this.containment[2]; if(position.top > this.containment[3]) position.top = this.containment[3]; } if(o.grid) { var top = this.originalPosition.top + Math.round((position.top - this.originalPosition.top) / o.grid[1]) * o.grid[1]; position.top = this.containment ? (!(top < this.containment[1] || top > this.containment[3]) ? top : (!(top < this.containment[1]) ? top - o.grid[1] : top + o.grid[1])) : top; var left = this.originalPosition.left + Math.round((position.left - this.originalPosition.left) / o.grid[0]) * o.grid[0]; position.left = this.containment ? (!(left < this.containment[0] || left > this.containment[2]) ? left : (!(left < this.containment[0]) ? left - o.grid[0] : left + o.grid[0])) : left; } return position; }, mouseDrag: function(e) { //Compute the helpers position this.position = this.generatePosition(e); this.positionAbs = this.convertPositionTo("absolute"); //Call plugins and callbacks and use the resulting position if something is returned this.position = this.propagate("drag", e) || this.position; if(!this.options.axis || this.options.axis != "y") this.helper[0].style.left = this.position.left+'px'; if(!this.options.axis || this.options.axis != "x") this.helper[0].style.top = this.position.top+'px'; if($.ui.ddmanager) $.ui.ddmanager.drag(this, e); return false; }, mouseStop: function(e) { //If we are using droppables, inform the manager about the drop if ($.ui.ddmanager && !this.options.dropBehaviour) $.ui.ddmanager.drop(this, e); if(this.options.revert) { var self = this; $(this.helper).animate(this.originalPosition, parseInt(this.options.revert, 10) || 500, function() { self.propagate("stop", e); self.clear(); }); } else { this.propagate("stop", e); this.clear(); } return false; }, clear: function() { this.helper.removeClass("ui-draggable-dragging"); if(this.options.helper != 'original' && !this.cancelHelperRemoval) this.helper.remove(); if($.ui.ddmanager) $.ui.ddmanager.current = null; this.helper = null; this.cancelHelperRemoval = false; }, // From now on bulk stuff - mainly helpers plugins: {}, uiHash: function(e) { return { helper: this.helper, position: this.position, absolutePosition: this.positionAbs, options: this.options }; }, propagate: function(n,e) { $.ui.plugin.call(this, n, [e, this.uiHash()]); return this.element.triggerHandler(n == "drag" ? n : "drag"+n, [e, this.uiHash()], this.options[n]); }, destroy: function() { if(!this.element.data('draggable')) return; this.element.removeData("draggable").unbind(".draggable").removeClass('ui-draggable'); this.mouseDestroy(); } })); $.extend($.ui.draggable, { defaults: { appendTo: "parent", axis: false, cancel: ":input,button", delay: 0, distance: 0, helper: "original" } }); $.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", "iframeFix", { start: function(e, ui) { $(ui.options.iframeFix === true ? "iframe" : ui.options.iframeFix).each(function() { $('
') .css({ width: this.offsetWidth+"px", height: this.offsetHeight+"px", position: "absolute", opacity: "0.001", zIndex: 1000 }) .css($(this).offset()) .appendTo("body"); }); }, stop: function(e, ui) { $("div.DragDropIframeFix").each(function() { this.parentNode.removeChild(this); }); //Remove frame helpers } }); $.ui.plugin.add("draggable", "scroll", { start: function(e, ui) { var o = ui.options; var i = $(this).data("draggable"); o.scrollSensitivity = o.scrollSensitivity || 20; o.scrollSpeed = o.scrollSpeed || 20; i.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); i.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); if(i.overflowY[0] != document && i.overflowY[0].tagName != 'HTML') i.overflowYOffset = i.overflowY.offset(); if(i.overflowX[0] != document && i.overflowX[0].tagName != 'HTML') i.overflowXOffset = i.overflowX.offset(); }, drag: function(e, ui) { var o = ui.options; var i = $(this).data("draggable"); if(i.overflowY[0] != document && i.overflowY[0].tagName != 'HTML') { if((i.overflowYOffset.top + i.overflowY[0].offsetHeight) - e.pageY < o.scrollSensitivity) i.overflowY[0].scrollTop = i.overflowY[0].scrollTop + o.scrollSpeed; if(e.pageY - i.overflowYOffset.top < o.scrollSensitivity) i.overflowY[0].scrollTop = i.overflowY[0].scrollTop - o.scrollSpeed; } else { 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.overflowXOffset.left + i.overflowX[0].offsetWidth) - e.pageX < o.scrollSensitivity) i.overflowX[0].scrollLeft = i.overflowX[0].scrollLeft + o.scrollSpeed; if(e.pageX - i.overflowXOffset.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.plugin.add("draggable", "snap", { start: function(e, ui) { var inst = $(this).data("draggable"); inst.snapElements = []; $(ui.options.snap === true ? '.ui-draggable' : ui.options.snap).each(function() { var $t = $(this); var $o = $t.offset(); if(this != inst.element[0]) inst.snapElements.push({ item: this, width: $t.outerWidth(), height: $t.outerHeight(), top: $o.top, left: $o.left }); }); }, drag: function(e, ui) { var inst = $(this).data("draggable"); var d = ui.options.snapTolerance || 20; var x1 = ui.absolutePosition.left, x2 = x1 + inst.helperProportions.width, y1 = ui.absolutePosition.top, y2 = y1 + inst.helperProportions.height; for (var i = inst.snapElements.length - 1; i >= 0; i--){ var l = inst.snapElements[i].left, r = l + inst.snapElements[i].width, t = inst.snapElements[i].top, b = t + inst.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 = inst.convertPositionTo("relative", { top: t - inst.helperProportions.height, left: 0 }).top; if(bs) ui.position.top = inst.convertPositionTo("relative", { top: b, left: 0 }).top; if(ls) ui.position.left = inst.convertPositionTo("relative", { top: 0, left: l - inst.helperProportions.width }).left; if(rs) ui.position.left = inst.convertPositionTo("relative", { top: 0, left: r }).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 = inst.convertPositionTo("relative", { top: t, left: 0 }).top; if(bs) ui.position.top = inst.convertPositionTo("relative", { top: b - inst.helperProportions.height, left: 0 }).top; if(ls) ui.position.left = inst.convertPositionTo("relative", { top: 0, left: l }).left; if(rs) ui.position.left = inst.convertPositionTo("relative", { top: 0, left: r - inst.helperProportions.width }).left; } }; } }); $.ui.plugin.add("draggable", "connectToSortable", { start: function(e,ui) { var inst = $(this).data("draggable"); inst.sortables = []; $(ui.options.connectToSortable).each(function() { if($.data(this, 'sortable')) { var sortable = $.data(this, 'sortable'); inst.sortables.push({ instance: sortable, shouldRevert: sortable.options.revert }); sortable.refresh(); //Do a one-time refresh at start to refresh the containerCache sortable.propagate("activate", e, inst); } }); }, 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 = $(this).data("draggable"); $.each(inst.sortables, function() { if(this.instance.isOver) { this.instance.isOver = 0; inst.cancelHelperRemoval = true; //Don't remove the helper in the draggable instance this.instance.cancelHelperRemoval = false; //Remove it in the sortable instance (so sortable plugins like revert still work) if(this.shouldRevert) this.instance.options.revert = true; //revert here this.instance.mouseStop(e); //Also propagate receive event, since the sortable is actually receiving a element this.instance.element.triggerHandler("sortreceive", [e, $.extend(this.instance.ui(), { sender: inst.element })], this.instance.options["receive"]); this.instance.options.helper = this.instance.options._helper; } else { this.instance.propagate("deactivate", e, inst); } }); }, drag: function(e,ui) { var inst = $(this).data("draggable"), self = this; var checkPos = function(o) { var l = o.left, r = l + o.width, t = o.top, b = t + o.height; return (l < (this.positionAbs.left + this.offset.click.left) && (this.positionAbs.left + this.offset.click.left) < r && t < (this.positionAbs.top + this.offset.click.top) && (this.positionAbs.top + this.offset.click.top) < b); }; $.each(inst.sortables, function(i) { if(checkPos.call(inst, this.instance.containerCache)) { //If it intersects, we use a little isOver variable and set it once, so our move-in stuff gets fired only once if(!this.instance.isOver) { this.instance.isOver = 1; //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) this.instance.currentItem = $(self).clone().appendTo(this.instance.element).data("sortable-item", true); this.instance.options._helper = this.instance.options.helper; //Store helper option to later restore it this.instance.options.helper = function() { return ui.helper[0]; }; e.target = this.instance.currentItem[0]; this.instance.mouseCapture(e, true, true); this.instance.mouseStart(e, true, true); //Because the browser event is way off the new appended portlet, we modify a couple of variables to reflect the changes this.instance.offset.click.top = inst.offset.click.top; this.instance.offset.click.left = inst.offset.click.left; this.instance.offset.parent.left -= inst.offset.parent.left - this.instance.offset.parent.left; this.instance.offset.parent.top -= inst.offset.parent.top - this.instance.offset.parent.top; inst.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(this.instance.currentItem) this.instance.mouseDrag(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(this.instance.isOver) { this.instance.isOver = 0; this.instance.cancelHelperRemoval = true; this.instance.options.revert = false; //No revert here this.instance.mouseStop(e, true); this.instance.options.helper = this.instance.options._helper; //Now we remove our currentItem, the list group clone again, and the placeholder, and animate the helper back to it's original size this.instance.currentItem.remove(); this.instance.placeholder.remove(); inst.propagate("fromSortable", e); } }; }); } }); $.ui.plugin.add("draggable", "stack", { start: function(e,ui) { var group = $.makeArray($(ui.options.stack.group)).sort(function(a,b) { return (parseInt($(a).css("zIndex"),10) || ui.options.stack.min) - (parseInt($(b).css("zIndex"),10) || ui.options.stack.min); }); $(group).each(function(i) { this.style.zIndex = ui.options.stack.min + i; }); this[0].style.zIndex = ui.options.stack.min + group.length; } }); })(jQuery);