AngularJS context menu to show closest next div only - angularjs

Question

How to show the context menu related div on my on click function? How to find the closest next div class and make visible on click on the button event, instead of showing all the div having the same classes.
Please note below my HTML and js also the fiddle link for reference:
http://jsfiddle.net/4WK7R/274/
HTML:
<div ng-app>
<div ng-controller="MyCtrl">
<div class="row">
<button id="mybutton" ng-click="showAlert()">Click me</button>
<div ng-show="myvalue" class="ng-cloak">11111111</div>
</div>
<div class="row">
<button id="mybutton" ng-click="showAlert()">Click me</button>
<div ng-show="myvalue" class="ng-cloak">22222222</div>
</div>
<div class="row">
<button id="mybutton" ng-click="showAlert()">Click me</button>
<div ng-show="myvalue" class="ng-cloak">333333333</div>
</div>
</div>
</div>
JS:
function MyCtrl($scope) {
$scope.myvalue = false;
$scope.showAlert = function(){
$scope.myvalue = true;
};
}

Answer 1

This is what you want i think:
<div ng-app>
<div ng-controller="MyCtrl">
<div class="row">
<button id="mybutton" ng-click="showAlert('div1')">Click me</button>
<div ng-show="div1" class="ng-cloak">11111111</div>
</div>
<div class="row">
<button id="mybutton" ng-click="showAlert('div2')">Click me</button>
<div ng-show="div2" class="ng-cloak">22222222</div>
</div>
<div class="row">
<button id="mybutton" ng-click="showAlert('div3')">Click me</button>
<div ng-show="div3" class="ng-cloak">333333333</div>
</div>
</div>
function MyCtrl($scope) {
$scope.showAlert = function(show){
//edited
$scope[show] ? $scope[show] = false: $scope[show]= true;
//$scope[show] = true;
};
}

Answer 2

Tabs:
function MyCtrl($scope) {
$scope.tabs = [{
title: "tab1",
show: true
}, {
title: "tab2",
show: false
}, {
title: "tab3",
show: false
}, ]
$scope.tabAction = function(tab) {
angular.forEach($scope.tabs, function(tab) {
tab.show = false;
});
tab.show ? tab.show = false : tab.show = true;
}
};
<div ng-app>
<div ng-controller="MyCtrl">
<div ng-repeat="tab in tabs">
<div ng-show="tab.show">{{tab.title}}</div>
<button ng-hide="tab.show" ng-click="tabAction(tab)">
open {{tab.title}}
</button>
<hr>
</div>
</div>