javascript组合模式
javascript 组合模式
需求:一个学校有两个班级，每个班级有两个组，小组分着上课，一起考试
不使用组合模式:
/*
* 需求 ，
* 一个学校有两个班级，每个班级有两个组，小组分着上课，一起考试
*
*不使用组合模式
* */
var school = function (name) {
this.name = name;
var classList = [];
this.add=function (cls) {
classList.push(cls);
return this;
};
this.getList = function () {
return classList;
}
}
var classList = function (name) {
this.name = name;
var groupList = [];
this.add=function (group) {
groupList.push(group);
return this;
};
this.getList = function () {
return groupList;
}
}
var groupList = function (name) {
this.name = name;
var studentList = [];
this.add=function (s) {
studentList.push(s);
return this;
};
this.getList = function () {
return studentList;
}
}
var student = function (name) {
this.name = name;
this.goClass = function () {
console.log(this.name+"上课");
};
this.gokoshi = function () {
console.log(this.name+"考试");
}
};
var zs = new student('zs');
var ls = new student('ls');
var ww = new student('ww');
var zl = new student('zl');
var mz = new student('mz');
var we = new student('we');
var gd = new student('gd');
var jg = new student('jg');
var one = new classList("一班");
var oneOne = new groupList("一班一组");
oneOne.add(zs).add(ls);
var oneTwo = new groupList("二班二组");
oneTwo.add(ww).add(zl);
one.add(oneOne).add(oneTwo);
var two = new classList("二班");
var twoOne = new groupList("二班一组");
twoOne.add(mz).add(we);
var twoTwo = new groupList("二班二组");
twoTwo.add(gd).add(jg);
two.add(twoOne).add(twoTwo);
var scl = new school("苏屯");
scl.add(one).add(two);
console.log(scl.getList());
/*
* 一班一组上课
* */
var list = scl.getList();
list.forEach(function (i) {
if(i.name=="一班"){
i.getList().forEach(function (j) {
if(j.name=="一班一组"){
console.log(j.getList());
j.getList().forEach(function (k) {
k.goClass();
})
}
})
}
})
组合模式:
/*
* 组合模式的实现
*
* */
var Interface = function (name,methods) {
if(arguments.length!=2){
throw new Error('必须输入两个参数,当前个数'+arguments.length);
};
this.name = name; //接口名
this.methods = []; //函数名
for(var i=0;i<methods.length;i++){
if(typeof methods[i] !== 'string'){
throw new Error('方法名参数必须为string');
}else{
this.methods.push(methods[i]);
}
}
};
//定义静态方法,检验实现接口和实现类 参数object为实现类对象
Interface.ensureImplements = function (object) {
if(arguments.length<2){
throw new Error('必须输入两个参数,当前个数' + arguments.length);
return;
};
for(var i =1;i<arguments.length;i++){
var interface = arguments[i];
if(interface.constructor != Interface){
throw new Error("接口没有实现");
};
for(var j=0;j<interface.methods.length;j++){
var method = interface.methods[j];
if(!object[method] || typeof object[method]!=='function'){
throw new Error("接口名:"+interface.name+"方法名："+method+"没找到");
}
}
}
};
function extend(subClass,superClass) {
var f = function () {};
f.prototype =superClass.prototype;
subClass.prototype = new f();
subClass.prototype.constructor = subClass;
subClass.superclass =superClass.prototype;
if(superClass.prototype.constructor==Object.prototype.constructor){
superClass.prototype.constructor =superClass;
}
};
var compo = new Interface('compo',['add','getList']);
var leaf = new Interface('leaf',['goClass','gokoshi']);
function compoList(name) {
this.name =name;
this.type = 1;
var childList =[];
this.add=function (child) {
childList.push(child);
return this;
};
this.getList=function(name){
var toChild = [];
if(!name){
childList.forEach(function (item) {
if(item.type==1){
toChild = toChild.concat(item.getList());
}else{
toChild.push(item);
}
})
}else{
childList.forEach(function (unit) {
if(unit.name ==name){
if(unit.type==1){
toChild = toChild.concat(unit.getList());
return;
}else{
toChild.push(unit);
return;
}
}else{
if(unit.type==1){
toChild=toChild.concat(unit.getList(name))
}
}
})
}
return toChild;
};
this.goClass=function (name) {
var toChild = this.getList(name);
toChild.forEach(function (item) {
item.goClass();
})
};
this.gokoshi=function (name) {
var toChild = this.getList(name);
toChild.forEach(function (item) {
item.gokoshi();
})
};
Interface.ensureImplements(this,compo,leaf);
}
function leafList(name) {
this.name =name;
this.type = 0;
this.add=function (child) {
throw new Error("该方法不能实现");
};
this.getList=function(name){
if(this.name==name){
return this;
}else {
return "";
}
};
this.goClass=function () {
console.log(this.name+"上课");
};
this.gokoshi=function () {
console.log(this.name+"考试");
};
Interface.ensureImplements(this,compo,leaf);
}
var zs = new leafList('zs');
var ls = new leafList('ls');
var ww = new leafList('ww');
var zl = new leafList('zl');
var mz = new leafList('mz');
var we = new leafList('we');
var gd = new leafList('gd');
var jg = new leafList('jg');
var one = new compoList("一班");
var oneOne = new compoList("一班一组");
oneOne.add(zs).add(ls);
var oneTwo = new compoList("二班二组");
oneTwo.add(ww).add(zl);
one.add(oneOne).add(oneTwo);
var two = new compoList("二班");
var twoOne = new compoList("二班一组");
twoOne.add(mz).add(we);
var twoTwo = new compoList("二班二组");
twoTwo.add(gd).add(jg);
two.add(twoOne).add(twoTwo);
var scl = new compoList("苏屯");
scl.add(one).add(two);
scl.goClass("二班");