}else ...{
netscape.security.PrivilegeManager.enablePrivilege('UniversalXPConnect');
var clip = Components.classes['@mozilla.org/widget/clipboard;1'].createInstance(Components.interfaces.nsIClipboard);
var trans = Components.classes['@mozilla.org/widget/transferable;1'].createInstance(Components.interfaces.nsITransferable);
if (!clip || !trans) return;
trans.addDataFlavor('text/unicode');
var len = new Object();
var str = Components.classes["@mozilla.org/supports-string;1"].createInstance(Components.interfaces.nsISupportsString);
str.data = selection;
trans.setTransferData("text/unicode",str,selection.length*2);
var clipid=Components.interfaces.nsIClipboard;
if (!clip) return false;
clip.setData(trans,null,clipid.kGlobalClipboard);
}
},
clickClose : true,
index : 0,
type : 'dynamic'
});
}
_this.bind();
},
hidden : function (level) ...{
level = level || 0;
for( var i = level; i<this.active.length; i++) ...{
var item = this.active[i];
var iframeElem = this.iframes[i];
if ( iframeElem !=null)
iframeElem.style.display = 'none';
if(this.settings.locked) return;
var menuElem = item.element;
if ( menuElem !=null)
menuElem.style.display = 'none';
}
this.onHidden(level);
},
onHidden : function (level) ...{
},
hasClass : function (elem, name)
...{
return !!elem && (' '+elem.className+' ').indexOf(' '+name+' ') != -1;
},
elemOffset : function(elem)...{
var left = 0;
var top = 0;
while (elem.offsetParent)...{
left += elem.offsetLeft;
top += elem.offsetTop;
elem = elem.offsetParent;
}
left += elem.offsetLeft;
top += elem.offsetTop;
return ...{x:left, y:top};
},
mouseCoords : function (e)...{
if (e.pageX && e.pageY) ...{
return ...{
x: e.pageX,
y: e.pageY
};
}
var d = (document.documentElement && document.documentElement.scrollTop) ? document.documentElement : document.body;
return ...{
x: e.clientX + d.scrollLeft,
y: e.clientY + d.scrollTop
};
},
addEvent : function(target,eventType,func)...{
if(target.attachEvent)
...{
target.attachEvent("on" + eventType, func);
}else if(target.addEventListener)
...{
target.addEventListener(eventType == 'mousewheel' ? 'DOMMouseScroll' : eventType, func, false);
}
return this;
},
removeEvent : function(target,eventType,func)...{
if(target.detachEvent)
...{
target.detachEvent("on" + eventType, func);
}else if(target.removeEventListener)
...{
target.removeEventListener(eventType == 'mousewheel' ? 'DOMMouseScroll' : eventType, func, false);
}
return this;
}
}
演示地址 http://demo.jb51.net/js/tree_json/ContextMenu.htm
3.节点树(TreeMenu)
节点树(TreeMenu)是我们实际项目中运用得最多了，网上很著名的有梅花雪的MzTreeVew，听说对大数据量时做了一些优化，效率很高。但我不太喜欢拿来主义，有些东西既然我看不懂或还不明白它为什么要这么做，所以就想尝试着自己来"造轮子"。当然功能肯定是没有MzTreeVew的那么强大，大数据量时我也没有做效率测试，图片先借MzTreeVew的。
