mirror of
https://gitee.com/dotnetchina/OpenAuth.Net.git
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调整文件结构，为全面优化javascript代码做准备
This commit is contained in:
yubaolee
370
OpenAuth.Mvc/Content/dragsort/jquery.dragsort-0.5.1.js
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370
OpenAuth.Mvc/Content/dragsort/jquery.dragsort-0.5.1.js
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// jQuery List DragSort v0.5.1
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// Website: http://dragsort.codeplex.com/
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// License: http://dragsort.codeplex.com/license
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(function($) {
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$.fn.dragsort = function(options) {
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if (options == "destroy") {
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var $selector = ($(this.selector).length) ? $(this.selector) : $(this);
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$selector.trigger("dragsort-uninit");
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return;
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}
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var opts = $.extend({}, $.fn.dragsort.defaults, options);
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var lists = [];
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var list = null, lastPos = null;
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this.each(function(i, cont) {
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//if list container is table, the browser automatically wraps rows in tbody if not specified so change list container to tbody so that children returns rows as user expected
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if ($(cont).is("table") && $(cont).children().size() == 1 && $(cont).children().is("tbody"))
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cont = $(cont).children().get(0);
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var newList = {
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draggedItem: null,
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placeHolderItem: null,
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pos: null,
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offset: null,
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offsetLimit: null,
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scroll: null,
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container: cont,
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init: function() {
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//set options to default values if not set
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var tagName = $(this.container).children().size() == 0 ? "li" : $(this.container).children(":first").get(0).tagName.toLowerCase();
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if (opts.itemSelector == "")
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opts.itemSelector = tagName;
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if (opts.dragSelector == "")
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opts.dragSelector = tagName;
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if (opts.placeHolderTemplate == "")
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opts.placeHolderTemplate = "<" + tagName + "> </" + tagName + ">";
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//listidx allows reference back to correct list variable instance
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$(this.container).attr("data-listidx", i).mousedown(this.grabItem).bind("dragsort-uninit", this.uninit);
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this.styleDragHandlers(true);
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},
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uninit: function() {
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var list = lists[$(this).attr("data-listidx")];
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$(list.container).unbind("mousedown", list.grabItem).unbind("dragsort-uninit");
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list.styleDragHandlers(false);
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},
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getItems: function() {
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return $(this.container).children(opts.itemSelector);
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},
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styleDragHandlers: function(cursor) {
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this.getItems().map(function() { return $(this).is(opts.dragSelector) ? this : $(this).find(opts.dragSelector).get(); }).css("cursor", cursor ? "pointer" : "");
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},
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grabItem: function(e) {
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//if not left click or if clicked on excluded element (e.g. text box) or not a moveable list item return
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if (e.which != 1 || $(e.target).is(opts.dragSelectorExclude) || $(e.target).closest(opts.dragSelectorExclude).size() > 0 || $(e.target).closest(opts.itemSelector).size() == 0)
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return;
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//prevents selection, stops issue on Fx where dragging hyperlink doesn't work and on IE where it triggers mousemove even though mouse hasn't moved,
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//does also stop being able to click text boxes hence dragging on text boxes by default is disabled in dragSelectorExclude
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e.preventDefault();
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//change cursor to move while dragging
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var dragHandle = e.target;
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while (!$(dragHandle).is(opts.dragSelector)) {
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if (dragHandle == this) return;
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dragHandle = dragHandle.parentNode;
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}
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$(dragHandle).attr("data-cursor", $(dragHandle).css("cursor"));
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$(dragHandle).css("cursor", "move");
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//on mousedown wait for movement of mouse before triggering dragsort script (dragStart) to allow clicking of hyperlinks to work
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var list = lists[$(this).attr("data-listidx")];
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var item = this;
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var trigger = function() {
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list.dragStart.call(item, e);
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$(list.container).unbind("mousemove", trigger);
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};
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$(list.container).mousemove(trigger).mouseup(function() { $(list.container).unbind("mousemove", trigger); $(dragHandle).css("cursor", $(dragHandle).attr("data-cursor")); });
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},
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dragStart: function(e) {
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if (list != null && list.draggedItem != null)
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list.dropItem();
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list = lists[$(this).attr("data-listidx")];
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list.draggedItem = $(e.target).closest(opts.itemSelector);
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//record current position so on dragend we know if the dragged item changed position or not
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list.draggedItem.attr("data-origpos", $(this).attr("data-listidx") + "-" + list.getItems().index(list.draggedItem));
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//calculate mouse offset relative to draggedItem
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var mt = parseInt(list.draggedItem.css("marginTop"));
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var ml = parseInt(list.draggedItem.css("marginLeft"));
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list.offset = list.draggedItem.offset();
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list.offset.top = e.pageY - list.offset.top + (isNaN(mt) ? 0 : mt) - 1;
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list.offset.left = e.pageX - list.offset.left + (isNaN(ml) ? 0 : ml) - 1;
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//calculate box the dragged item can't be dragged outside of
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if (!opts.dragBetween) {
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var containerHeight = $(list.container).outerHeight() == 0 ? Math.max(1, Math.round(0.5 + list.getItems().size() * list.draggedItem.outerWidth() / $(list.container).outerWidth())) * list.draggedItem.outerHeight() : $(list.container).outerHeight();
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list.offsetLimit = $(list.container).offset();
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list.offsetLimit.right = list.offsetLimit.left + $(list.container).outerWidth() - list.draggedItem.outerWidth();
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list.offsetLimit.bottom = list.offsetLimit.top + containerHeight - list.draggedItem.outerHeight();
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}
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//create placeholder item
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var h = list.draggedItem.height();
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var w = list.draggedItem.width();
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if (opts.itemSelector == "tr") {
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list.draggedItem.children().each(function() { $(this).width($(this).width()); });
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list.placeHolderItem = list.draggedItem.clone().attr("data-placeholder", true);
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list.draggedItem.after(list.placeHolderItem);
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list.placeHolderItem.children().each(function() { $(this).css({ borderWidth:0, width: $(this).width() + 1, height: $(this).height() + 1 }).html(" "); });
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} else {
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list.draggedItem.after(opts.placeHolderTemplate);
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list.placeHolderItem = list.draggedItem.next().css({ height: h, width: w }).attr("data-placeholder", true);
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}
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if (opts.itemSelector == "td") {
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var listTable = list.draggedItem.closest("table").get(0);
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$("<table id='" + listTable.id + "' style='border-width: 0px;' class='dragSortItem " + listTable.className + "'><tr></tr></table>").appendTo("body").children().append(list.draggedItem);
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}
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//style draggedItem while dragging
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var orig = list.draggedItem.attr("style");
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list.draggedItem.attr("data-origstyle", orig ? orig : "");
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list.draggedItem.css({ position: "absolute", opacity: 0.8, "z-index": 999, height: h, width: w });
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//auto-scroll setup
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list.scroll = { moveX: 0, moveY: 0, maxX: $(document).width() - $(window).width(), maxY: $(document).height() - $(window).height() };
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list.scroll.scrollY = window.setInterval(function() {
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if (opts.scrollContainer != window) {
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$(opts.scrollContainer).scrollTop($(opts.scrollContainer).scrollTop() + list.scroll.moveY);
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return;
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}
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var t = $(opts.scrollContainer).scrollTop();
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if (list.scroll.moveY > 0 && t < list.scroll.maxY || list.scroll.moveY < 0 && t > 0) {
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$(opts.scrollContainer).scrollTop(t + list.scroll.moveY);
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list.draggedItem.css("top", list.draggedItem.offset().top + list.scroll.moveY + 1);
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}
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}, 10);
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list.scroll.scrollX = window.setInterval(function() {
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if (opts.scrollContainer != window) {
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$(opts.scrollContainer).scrollLeft($(opts.scrollContainer).scrollLeft() + list.scroll.moveX);
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return;
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}
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var l = $(opts.scrollContainer).scrollLeft();
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if (list.scroll.moveX > 0 && l < list.scroll.maxX || list.scroll.moveX < 0 && l > 0) {
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$(opts.scrollContainer).scrollLeft(l + list.scroll.moveX);
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list.draggedItem.css("left", list.draggedItem.offset().left + list.scroll.moveX + 1);
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}
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}, 10);
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//misc
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$(lists).each(function(i, l) { l.createDropTargets(); l.buildPositionTable(); });
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list.setPos(e.pageX, e.pageY);
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$(document).bind("mousemove", list.swapItems);
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$(document).bind("mouseup", list.dropItem);
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if (opts.scrollContainer != window)
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$(window).bind("DOMMouseScroll mousewheel", list.wheel);
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},
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//set position of draggedItem
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setPos: function(x, y) {
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//remove mouse offset so mouse cursor remains in same place on draggedItem instead of top left corner
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var top = y - this.offset.top;
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var left = x - this.offset.left;
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//limit top, left to within box draggedItem can't be dragged outside of
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if (!opts.dragBetween) {
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top = Math.min(this.offsetLimit.bottom, Math.max(top, this.offsetLimit.top));
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left = Math.min(this.offsetLimit.right, Math.max(left, this.offsetLimit.left));
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}
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//adjust top, left calculations to parent element instead of window if it's relative or absolute
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this.draggedItem.parents().each(function() {
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if ($(this).css("position") != "static" && (!$.browser.mozilla || $(this).css("display") != "table")) {
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var offset = $(this).offset();
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top -= offset.top;
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left -= offset.left;
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return false;
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}
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});
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//set x or y auto-scroll amount
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if (opts.scrollContainer == window) {
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y -= $(window).scrollTop();
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x -= $(window).scrollLeft();
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y = Math.max(0, y - $(window).height() + 5) + Math.min(0, y - 5);
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x = Math.max(0, x - $(window).width() + 5) + Math.min(0, x - 5);
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} else {
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var cont = $(opts.scrollContainer);
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var offset = cont.offset();
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y = Math.max(0, y - cont.height() - offset.top) + Math.min(0, y - offset.top);
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x = Math.max(0, x - cont.width() - offset.left) + Math.min(0, x - offset.left);
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}
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list.scroll.moveX = x == 0 ? 0 : x * opts.scrollSpeed / Math.abs(x);
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list.scroll.moveY = y == 0 ? 0 : y * opts.scrollSpeed / Math.abs(y);
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//move draggedItem to new mouse cursor location
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this.draggedItem.css({ top: top, left: left });
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},
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//if scroll container is a div allow mouse wheel to scroll div instead of window when mouse is hovering over
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wheel: function(e) {
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if (($.browser.safari || $.browser.mozilla) && list && opts.scrollContainer != window) {
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var cont = $(opts.scrollContainer);
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var offset = cont.offset();
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if (e.pageX > offset.left && e.pageX < offset.left + cont.width() && e.pageY > offset.top && e.pageY < offset.top + cont.height()) {
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var delta = e.detail ? e.detail * 5 : e.wheelDelta / -2;
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cont.scrollTop(cont.scrollTop() + delta);
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e.preventDefault();
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}
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}
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},
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//build a table recording all the positions of the moveable list items
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buildPositionTable: function() {
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var pos = [];
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this.getItems().not([list.draggedItem[0], list.placeHolderItem[0]]).each(function(i) {
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var loc = $(this).offset();
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loc.right = loc.left + $(this).outerWidth();
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loc.bottom = loc.top + $(this).outerHeight();
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loc.elm = this;
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pos[i] = loc;
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});
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this.pos = pos;
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},
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dropItem: function() {
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if (list.draggedItem == null)
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return;
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//list.draggedItem.attr("style", "") doesn't work on IE8 and jQuery 1.5 or lower
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//list.draggedItem.removeAttr("style") doesn't work on chrome and jQuery 1.6 (works jQuery 1.5 or lower)
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var orig = list.draggedItem.attr("data-origstyle");
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list.draggedItem.attr("style", orig);
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if (orig == "")
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list.draggedItem.removeAttr("style");
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list.draggedItem.removeAttr("data-origstyle");
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list.styleDragHandlers(true);
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list.placeHolderItem.before(list.draggedItem);
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list.placeHolderItem.remove();
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$("[data-droptarget], .dragSortItem").remove();
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window.clearInterval(list.scroll.scrollY);
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window.clearInterval(list.scroll.scrollX);
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//if position changed call dragEnd
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if (list.draggedItem.attr("data-origpos") != $(lists).index(list) + "-" + list.getItems().index(list.draggedItem))
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opts.dragEnd.apply(list.draggedItem);
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list.draggedItem.removeAttr("data-origpos");
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list.draggedItem = null;
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$(document).unbind("mousemove", list.swapItems);
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$(document).unbind("mouseup", list.dropItem);
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if (opts.scrollContainer != window)
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$(window).unbind("DOMMouseScroll mousewheel", list.wheel);
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return false;
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},
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//swap the draggedItem (represented visually by placeholder) with the list item the it has been dragged on top of
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swapItems: function(e) {
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if (list.draggedItem == null)
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return false;
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//move draggedItem to mouse location
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list.setPos(e.pageX, e.pageY);
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//retrieve list and item position mouse cursor is over
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var ei = list.findPos(e.pageX, e.pageY);
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var nlist = list;
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for (var i = 0; ei == -1 && opts.dragBetween && i < lists.length; i++) {
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ei = lists[i].findPos(e.pageX, e.pageY);
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nlist = lists[i];
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}
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//if not over another moveable list item return
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if (ei == -1)
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return false;
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//save fixed items locations
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var children = function() { return $(nlist.container).children().not(nlist.draggedItem); };
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var fixed = children().not(opts.itemSelector).each(function(i) { this.idx = children().index(this); });
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//if moving draggedItem up or left place placeHolder before list item the dragged item is hovering over otherwise place it after
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if (lastPos == null || lastPos.top > list.draggedItem.offset().top || lastPos.left > list.draggedItem.offset().left)
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$(nlist.pos[ei].elm).before(list.placeHolderItem);
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else
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$(nlist.pos[ei].elm).after(list.placeHolderItem);
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//restore fixed items location
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fixed.each(function() {
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var elm = children().eq(this.idx).get(0);
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if (this != elm && children().index(this) < this.idx)
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$(this).insertAfter(elm);
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else if (this != elm)
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$(this).insertBefore(elm);
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});
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//misc
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$(lists).each(function(i, l) { l.createDropTargets(); l.buildPositionTable(); });
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lastPos = list.draggedItem.offset();
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return false;
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},
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//returns the index of the list item the mouse is over
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findPos: function(x, y) {
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for (var i = 0; i < this.pos.length; i++) {
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if (this.pos[i].left < x && this.pos[i].right > x && this.pos[i].top < y && this.pos[i].bottom > y)
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return i;
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}
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return -1;
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},
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//create drop targets which are placeholders at the end of other lists to allow dragging straight to the last position
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createDropTargets: function() {
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if (!opts.dragBetween)
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return;
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$(lists).each(function() {
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var ph = $(this.container).find("[data-placeholder]");
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var dt = $(this.container).find("[data-droptarget]");
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if (ph.size() > 0 && dt.size() > 0)
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dt.remove();
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else if (ph.size() == 0 && dt.size() == 0) {
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if (opts.itemSelector == "td")
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$(opts.placeHolderTemplate).attr("data-droptarget", true).appendTo(this.container);
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else
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//list.placeHolderItem.clone().removeAttr("data-placeholder") crashes in IE7 and jquery 1.5.1 (doesn't in jquery 1.4.2 or IE8)
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$(this.container).append(list.placeHolderItem.removeAttr("data-placeholder").clone().attr("data-droptarget", true));
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list.placeHolderItem.attr("data-placeholder", true);
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}
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});
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}
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};
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newList.init();
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lists.push(newList);
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});
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return this;
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};
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$.fn.dragsort.defaults = {
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itemSelector: "",
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dragSelector: "",
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dragSelectorExclude: "input, textarea",
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dragEnd: function() { },
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dragBetween: false,
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placeHolderTemplate: "",
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scrollContainer: window,
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scrollSpeed: 5
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};
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})(jQuery);
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