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189 lines
7.8 KiB
JavaScript
189 lines
7.8 KiB
JavaScript
/// <reference path="../intellisense/jquery-1.2.6-vsdoc-cn.js" />
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/* --------------------------------------------------
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参数说明
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option: {width:Number, items:Array, onShow:Function, rule:JSON}
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成员语法(三种形式) -- para.items
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-> {text:String, icon:String, type:String, alias:String, width:Number, items:Array} -- 菜单组
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-> {text:String, icon:String, type:String, alias:String, action:Function } -- 菜单项
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-> {type:String} -- 菜单分隔线
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--------------------------------------------------*/
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(function($) {
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function returnfalse() { return false; };
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$.fn.contextmenu = function(option) {
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option = $.extend({ alias: "cmroot", width: 150 }, option);
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var ruleName = null, target = null,
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groups = {}, mitems = {}, actions = {}, showGroups = [],
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itemTpl = "<div class='b-m-$[type]' unselectable=on><nobr unselectable=on><img src='$[icon]' align='absmiddle'/><span unselectable=on>$[text]</span></nobr></div>";
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var gTemplet = $("<div/>").addClass("b-m-mpanel").attr("unselectable", "on").css("display", "none");
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var iTemplet = $("<div/>").addClass("b-m-item").attr("unselectable", "on");
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var sTemplet = $("<div/>").addClass("b-m-split");
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//创建菜单组
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var buildGroup = function(obj) {
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groups[obj.alias] = this;
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this.gidx = obj.alias;
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this.id = obj.alias;
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if (obj.disable) {
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this.disable = obj.disable;
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this.className = "b-m-idisable";
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}
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$(this).width(obj.width).click(returnfalse).mousedown(returnfalse).appendTo($("body"));
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obj = null;
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return this;
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};
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var buildItem = function(obj) {
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var T = this;
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T.title = obj.text;
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T.idx = obj.alias;
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T.gidx = obj.gidx;
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T.data = obj;
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T.innerHTML = itemTpl.replace(/\$\[([^\]]+)\]/g, function() {
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return obj[arguments[1]];
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});
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if (obj.disable) {
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T.disable = obj.disable;
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T.className = "b-m-idisable";
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}
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obj.items && (T.group = true);
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obj.action && (actions[obj.alias] = obj.action);
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mitems[obj.alias] = T;
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T = obj = null;
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return this;
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};
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//添加菜单项
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var addItems = function(gidx, items) {
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var tmp = null;
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for (var i = 0; i < items.length; i++) {
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if (items[i].type == "splitLine") {
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//菜单分隔线
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tmp = sTemplet.clone()[0];
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} else {
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items[i].gidx = gidx;
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if (items[i].type == "group") {
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//菜单组
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buildGroup.apply(gTemplet.clone()[0], [items[i]]);
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arguments.callee(items[i].alias, items[i].items);
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items[i].type = "arrow";
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tmp = buildItem.apply(iTemplet.clone()[0], [items[i]]);
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} else {
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//菜单项
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items[i].type = "ibody";
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tmp = buildItem.apply(iTemplet.clone()[0], [items[i]]);
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$(tmp).click(function(e) {
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if (!this.disable) {
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if ($.isFunction(actions[this.idx])) {
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actions[this.idx].call(this, target);
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}
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hideMenuPane();
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}
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return false;
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});
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} //Endif
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$(tmp).bind("contextmenu", returnfalse).hover(overItem, outItem);
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} //Endif
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groups[gidx].appendChild(tmp);
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tmp = items[i] = items[i].items = null;
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} //Endfor
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gidx = items = null;
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};
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var overItem = function(e) {
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//如果菜单项不可用
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if (this.disable)
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return false;
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hideMenuPane.call(groups[this.gidx]);
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//如果是菜单组
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if (this.group) {
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var pos = $(this).offset();
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var width = $(this).outerWidth();
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showMenuGroup.apply(groups[this.idx], [pos, width]);
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}
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this.className = "b-m-ifocus";
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return false;
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};
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//菜单项失去焦点
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var outItem = function(e) {
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//如果菜单项不可用
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if (this.disable )
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return false;
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if (!this.group) {
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//菜单项
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this.className = "b-m-item";
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} //Endif
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return false;
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};
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//在指定位置显示指定的菜单组
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var showMenuGroup = function(pos, width) {
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var bwidth = $("body").width();
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var bheight = document.documentElement.clientHeight;
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var mwidth = $(this).outerWidth();
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var mheight = $(this).outerHeight();
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pos.left = (pos.left + width + mwidth > bwidth) ? (pos.left - mwidth < 0 ? 0 : pos.left - mwidth) : pos.left + width;
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pos.top = (pos.top + mheight > bheight) ? (pos.top - mheight + (width > 0 ? 25 : 0) < 0 ? 0 : pos.top - mheight + (width > 0 ? 25 : 0)) : pos.top;
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$(this).css(pos).show();
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showGroups.push(this.gidx);
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};
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//隐藏菜单组
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var hideMenuPane = function() {
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var alias = null;
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for (var i = showGroups.length - 1; i >= 0; i--) {
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if (showGroups[i] == this.gidx)
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break;
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alias = showGroups.pop();
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groups[alias].style.display = "none";
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mitems[alias] && (mitems[alias].className = "b-m-item");
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} //Endfor
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//CollectGarbage();
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};
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function applyRule(rule) {
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if (ruleName && ruleName == rule.name)
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return false;
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for (var i in mitems)
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disable(i, !rule.disable);
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for (var i = 0; i < rule.items.length; i++)
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disable(rule.items[i], rule.disable);
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ruleName = rule.name;
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};
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function disable(alias, disabled) {
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var item = mitems[alias];
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item.className = (item.disable = item.lastChild.disabled = disabled) ? "b-m-idisable" : "b-m-item";
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};
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/** 右键菜单显示 */
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function showMenu(e, menutarget) {
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target = menutarget;
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showMenuGroup.call(groups.cmroot, { left: e.pageX, top: e.pageY }, 0);
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$(document).one('mousedown', hideMenuPane);
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}
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var $root = $("#" + option.alias);
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var root = null;
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if ($root.length == 0) {
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root = buildGroup.apply(gTemplet.clone()[0], [option]);
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root.applyrule = applyRule;
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root.showMenu = showMenu;
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addItems(option.alias, option.items);
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}
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else {
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root = $root[0];
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}
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var me = $(this).each(function() {
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return $(this).bind('contextmenu', function(e) {
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var bShowContext = (option.onContextMenu && $.isFunction(option.onContextMenu)) ? option.onContextMenu.call(this, e) : true;
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if (bShowContext) {
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if (option.onShow && $.isFunction(option.onShow)) {
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option.onShow.call(this, root);
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}
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root.showMenu(e, this);
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}
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return false;
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});
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});
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//设置显示规则
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if (option.rule) {
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applyRule(option.rule);
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}
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gTemplet = iTemplet = sTemplet = itemTpl = buildGroup = buildItem = null;
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addItems = overItem = outItem = null;
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//CollectGarbage();
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return me;
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}
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})(jQuery); |