<!DOCTYPE html>
<html lang="en" ng-app="testDirectiveRequire">
<head>
<meta charset="UTF-8">
<title>测试DirectiveRequire</title>
<script src="../frameWork/angular.js"></script>
<script src="../testDirective/testDirectiveRequire.js"></script>
</head>
<body ng-controller="testDirectiveRequireController">
<h3>内容1:同级别的情况,加"?"可以为非必须的require</h3>
<test-require-sibling-three test-require-sibling-one test-require-sibling-two></test-require-sibling-three>
<h3>内容2:不同级别的情况,加"?"可以为非必须的require</h3>
<test-require-parent></test-require-parent>
</body>
</html>
/**
* 由于directive在angular中的地位之重,所以得认真对待。但理解难啊,所以决定逐个属性进行实例分析
* directive实例分析第六篇:require
* Created by liyanq on 16/12/22.
*/
/**require的地位也不能忽视啊,直接影响link的第四个参数的来源。当然如果不涉及父子作用域或兄弟作用域信息的传递,它也没啥作用了。
* 1,原型:require property can be a string, an array or an object;
* require: 'siblingDirectiveName', // or // ['^parentDirectiveName', '?optionalDirectiveName', '?^optionalParent'],
* 2,不写require,link的第四个参数就是自己的controller。
* 3,只写"string",属于同一标签,所require的指令必须以"A"的形式存在,且不能循环require,被require的指令不能template.
* 4,scope的区别,这个非常重要。
* 这三个指令(Sibling的)的scope是同一对象,无论在什么地方(link,controller)
* 如果有一个指令的scope为true,那么他们共用一个新的scope.
* 如果三个指令的scope都为false,那么他们共用外层scope,例如:testDirectiveRequireController的scope。
* 两个指令(parent,child)的scope不同对象,除非scope都是false.
* 以上情况不清楚原因,可能和指令为属性的时候有关系。也许指令为属性的时候,共享元素的scope?(瞎猜的~)
*
*
* 突然感觉就难了,真特么难啊,千变万化,指令存在的形式太多了。
* require的其他形式如:?、?^、?^^、^^(上上层的自己一样的指令)、arr、obj,甚至和bindToController属性有关系,
* 这些内容等到时候再说吧。
* */
var app = angular.module("testDirectiveRequire", []);
app.controller("testDirectiveRequireController", function ($scope) {
$scope.message = "testDirectiveRequireController";
}).directive("testRequireSiblingOne", function () {
var dir = {};
dir.restrict = "A";
dir.replace = true;
dir.scope = false;
dir.controller = function ($scope) {
console.log("testRequireSiblingOne->controller");
this.onSiblingClickOne = function () {
console.log("我是来自testRequireSiblingOne的controller的事件");
}
};
return dir;
}).directive("testRequireSiblingTwo", function () {
var dir = {};
dir.restrict = "A";
dir.replace = true;
dir.scope = false;
dir.require = "testRequireSiblingOne";
dir.link = function (scope, elem, attr, ctr) {
console.log("testRequireSiblingTwo->link");
scope.onSiblingClickTwo = function () {
ctr.onSiblingClickOne();
console.log("我是来自testRequireSiblingTwo的link的事件");
}
};
dir.controller = function ($scope) {
console.log("testRequireSiblingTwo->controller");
this.onSiblingClickTwo = function () {//必须等加载完了,才能调用,否则无效
$scope.onSiblingClickTwo();
};
};
return dir;
}).directive("testRequireSiblingThree", function () {
var dir = {};
dir.restrict = "E";
dir.replace = true;
dir.scope = true;
dir.require = "testRequireSiblingTwo";
dir.template = function (tElement, tAttrs) {
return "<div>来自testRequireSiblingThree指令模版" +
"<button ng-click='onSiblingClickThree()'>执行兄弟的click事件</button>" +
"</div>"
};
dir.link = function (scope, elem, attr, ctr) {
console.log(scope);
console.log("testRequireSiblingThree->link");
scope.onSiblingClickThree = function () {
ctr.onSiblingClickTwo();
console.log("我是来自testRequireSiblingThree的controller的事件");
}
};
return dir;
}).directive("testRequireParent", function () {
var dir = {};
dir.restrict = "E";
dir.replace = true;
dir.scope = true;
dir.template = function (tElement, tAttrs) {
return "<div>来自testRequireParent指令模版" +
"<test-require-child></test-require-child>" +
"</div>"
};
dir.controller = function ($scope) {
console.log($scope);
console.log("testRequireParent->controller");
this.onParentClick = function () {//必须等加载完了,才能调用,否则无效
console.log("我是来自testRequireParent的controller的事件");
};
};
return dir;
}).directive("testRequireChild", function () {
var dir = {};
dir.restrict = "E";
dir.replace = true;
dir.scope = true;
dir.require = "^testRequireParent";
dir.template = function (tElement, tAttrs) {
return "<div>testRequireChild" +
"<button ng-click='onChildClick()'>执行兄弟的click事件</button>" +
"</div>"
};
dir.link = function (scope, elem, attr, ctr) {
console.log(scope);
console.log("testRequireChild->link");
scope.onChildClick = function () {
// ctr.onParentClick();
console.log("我是来自testRequireChild的controller的事件");
}
};
return dir;
});
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