保持 md-select 打开，直到在外部单击 - AngularJS

Question

我正在使用 md-select 渲染带有 selectAll 选项的 md-checkbox。

如果我 select 全部，所有复选框都会 selected 并且下拉列表会关闭，这是预期的。

当 select 编辑除 All 以外的任何值并在外部点击时关闭它时，如何触发不关闭下拉菜单？

var app = angular.module('BlankApp', ['ngMaterial', 'ngMessages']);

app.controller('mdSelectController', function($scope, $mdPanel, $mdSidenav, $mdDialog) {

  $scope.helpers = [{
      name: 'All',
      selected: false
    },
    {
      name: 'Ron',
      selected: false
    },
    {
      name: 'Jim',
      selected: false
    },
    {
      name: 'John',
      selected: false
    },
    {
      name: 'Paul',
      selected: false
    },
    {
      name: 'Jeremie',
      selected: false
    }
  ];

  $scope.changeCheckbox = function(rating) {
  console.log(rating)
    if (rating.name === 'All' && rating.selected === true) {
      _.forEach($scope.helpers, function(item) {
        item.selected = true;
      });
    }
    if (rating.name === 'All' && rating.selected === false) {
      _.forEach($scope.helpers, function(item) {
        item.selected = false;
      });
    }
    if (rating.name !== 'All') {
      console.log("Not all");
      _.forEach($scope.helpers, function(item) {
        if (item.name === 'All') {
          item.selected = false;
        }
      });
    }
  };

});

<html lang="en">

<head>
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <!-- Angular Material style sheet -->
  <link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/angular_material/1.1.8/angular-material.min.css">
</head>

<body ng-app="BlankApp" ng-controller="mdSelectController" ng-cloak>
  <!--
    Your HTML content here
  -->

  <!-- Angular Material requires Angular.js Libraries -->
  <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
  <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular-animate.min.js"></script>
  <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular-aria.min.js"></script>
  <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular-messages.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>

  <!-- Angular Material Library -->
  <script src="https://ajax.googleapis.com/ajax/libs/angular_material/1.1.8/angular-material.min.js">
  </script>
  <md-input-container>
    <label>Rating</label>
    <md-select id="ratingDropdown" ng-model="automationRatingObj" md-container-class="ratingDropdown" required="required">
      <md-option ng-value="rating" ng-repeat="rating in helpers track by $index">
        <md-checkbox ng-model="rating.selected" aria-label="Select a Rating" ng-change="changeCheckbox(rating)"></md-checkbox>{{rating.name}}
      </md-option>
    </md-select>
  </md-input-container>

</body>

</html>

请指教。我检查了 md-select 的 API 但他们没有任何代码来保持下拉列表打开。另外，如何禁用单击 md-select 中的文本并仅对复选框启用单击？

Answer 1

您可以使用 md-select 中的 multiple 而不是 md-checkbox。但是您需要更新 changeCheckbox 函数 - 对于 select ALL.

像这样：

<md-select id="ratingDropdown" ng-model="automationRatingObj" md-container-class="ratingDropdown" required="required" multiple="true" ng-change="changeCheckbox()">
      <md-option ng-value="rating" ng-repeat="rating in helpers track by $index" >
        {{rating.name}}
      </md-option>
    </md-select>

Answer 2

您希望下拉菜单在单击全部时关闭，但在单击任何其他项目时保持打开状态。您可以检查您在 ng-repeat 中的值并添加 $event.stopPropagation();对于没有 'All' 的所有对象。您可以在 ng-click on md-option 上使用三元运算符执行此操作：ng-click="rating.name != 'All' ? $event.stopPropagation(): ''"

var app = angular.module('BlankApp', ['ngMaterial', 'ngMessages']);

app.controller('mdSelectController', function($scope, $mdPanel, $mdSidenav, $mdDialog) {

  $scope.helpers = [{
      name: 'All',
      selected: false
    },
    {
      name: 'Ron',
      selected: false
    },
    {
      name: 'Jim',
      selected: false
    },
    {
      name: 'John',
      selected: false
    },
    {
      name: 'Paul',
      selected: false
    },
    {
      name: 'Jeremie',
      selected: false
    }
  ];

  $scope.changeCheckbox = function(rating) {
  console.log(rating)
    if (rating.name === 'All' && rating.selected === true) {
      _.forEach($scope.helpers, function(item) {
        item.selected = true;
      });
    }
    if (rating.name === 'All' && rating.selected === false) {
      _.forEach($scope.helpers, function(item) {
        item.selected = false;
      });
    }
    if (rating.name !== 'All') {
      console.log("Not all");
      _.forEach($scope.helpers, function(item) {
        if (item.name === 'All') {
          item.selected = false;
        }
      });
    }
  };

});

<html lang="en">

<head>
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <!-- Angular Material style sheet -->
  <link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/angular_material/1.1.8/angular-material.min.css">
</head>

<body ng-app="BlankApp" ng-controller="mdSelectController" ng-cloak>
  <!--
    Your HTML content here
  -->

  <!-- Angular Material requires Angular.js Libraries -->
  <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
  <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular-animate.min.js"></script>
  <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular-aria.min.js"></script>
  <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular-messages.min.js"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.min.js"></script>

  <!-- Angular Material Library -->
  <script src="https://ajax.googleapis.com/ajax/libs/angular_material/1.1.8/angular-material.min.js">
  </script>
  <md-input-container>
    <label>Rating</label>
    <md-select id="ratingDropdown" ng-model="automationRatingObj" md-container-class="ratingDropdown" required="required">
      <md-option ng-value="rating" ng-repeat="rating in helpers track by $index" ng-click="rating.name != 'All' ? $event.stopPropagation(): ''" >
        <md-checkbox ng-model="rating.selected" aria-label="Select a Rating" ng-change="changeCheckbox(rating)"></md-checkbox>{{rating.name}}
      </md-option>
    </md-select>
  </md-input-container>

</body>

</html>

保持 md-select 打开，直到在外部单击 - AngularJS

Keep md-select open until clicked outside - AngularJS

javascript

angularjs

angular-material

md-select