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              <html ng-app="ionicApp">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width">
    
    <title>Tabs Example</title>

    <link href="https://code.ionicframework.com/1.0.0-beta.11/css/ionic.css" rel="stylesheet">
    <script src="https://code.ionicframework.com/1.0.0-beta.11/js/ionic.bundle.js"></script>
  </head>

  <body>
    
    <ion-nav-view></ion-nav-view>

    <script id="templates/scaffold.html" type="text/ng-template">
      <ion-nav-bar class="nav-title-slide-ios7 bar-positive">
        <pr-nav-back-button class="button-icon"></pr-nav-back-button>
      </ion-nav-bar>

      <ion-nav-view animation="slide-left-right"></ion-nav-view>
    </script>

    <script id="templates/tabs.html" type="text/ng-template">
      <ion-tabs class="tabs-icon-top tabs-positive">

        <ion-tab title="Home" icon="ion-home" href="#/tab/home">
          <ion-nav-view name="home-tab"></ion-nav-view>
        </ion-tab>

        <ion-tab title="About" icon="ion-ios7-information" href="#/tab/about">
          <ion-nav-view name="about-tab"></ion-nav-view>
        </ion-tab>

        <ion-tab title="Contact" icon="ion-ios7-world" ui-sref="tabs.contact">
          <ion-nav-view name="contact-tab"></ion-nav-view>
        </ion-tab>

      </ion-tabs>
    </script>

    <script id="templates/home.html" type="text/ng-template">
      <ion-view title="Home">
        <ion-content class="padding">
          <p>Example of Ionic tabs. Navigate to each tab, and
          navigate to child views of each tab and notice how
          each tab has its own navigation history.</p>
          <p>
            <a class="button icon icon-right ion-chevron-right" ui-sref="home.facts">Scientific Facts</a>
          </p>
        </ion-content>
      </ion-view>
    </script>

    <script id="templates/facts.html" type="text/ng-template">
      <ion-view title="Facts">
        <ion-content class="padding">
          <p>Here we are starting on a nested state (home.facts), but since we have no history of going to this nested state from home, the back button still appears, knowing there is a parent state to navigate to. If there is a view to go back to in Ionic's history, the back button will default to that.</p>
          <p>All the code is wrapped up in an angular module that needs to be included as a dependency of the app module. After that, you just have to replace <code>ion-nav-back-button</code> tag with <code>pr-nav-back-button</code> tag.</p>
          <p>
            <a class="button icon ion-home" ui-sref="^"> Home</a>
            <a class="button icon icon-right ion-chevron-right"
               ui-sref=".facts2">More Facts</a>
          </p>
        </ion-content>
      </ion-view>
    </script>

    <script id="templates/facts2.html" type="text/ng-template">
      <ion-view title="Also Factual">
        <ion-content class="padding">
          <p>111,111,111 x 111,111,111 = 12,345,678,987,654,321</p>
          <p>1 in every 4 Americans has appeared on T.V.</p>
          <p>11% of the world is left-handed.</p>
          <p>1 in 8 Americans has worked at a McDonalds restaurant.</p>
          <p>$283,200 is the absolute highest amount of money you can win on Jeopardy.</p>
          <p>101 Dalmatians, Peter Pan, Lady and the Tramp, and Mulan are the only Disney cartoons where both parents are present and don't die throughout the movie.</p>
          <p>
            <a class="button icon ion-home" ui-sref="^.^"> Home</a>
            <a class="button icon ion-chevron-left" ui-sref="^">Scientific Facts</a>
          </p>
        </ion-content>
      </ion-view>
    </script>

    <script id="templates/about.html" type="text/ng-template">
      <ion-view title="About">
        <ion-content class="padding">
          <h3>Create hybrid mobile apps with the web technologies you love.</h3>
          <p>Free and open source, Ionic offers a library of mobile-optimized HTML, CSS and JS components for building highly interactive apps.</p>
          <p>Built with Sass and optimized for AngularJS.</p>
          <p>
            <a class="button icon icon-right ion-chevron-right" href="#/tab/navstack">Tabs Nav Stack</a>
          </p>
        </ion-content>
      </ion-view>
    </script>

    <script id="templates/nav-stack.html" type="text/ng-template">
      <ion-view title="Tab Nav Stack">
        <ion-content class="padding">
          <p><img src="https://ionicframework.com/img/diagrams/tabs-nav-stack.png" style="width:100%"></p>
        </ion-content>
      </ion-view>
    </script>

    <script id="templates/contact.html" type="text/ng-template">
      <ion-view title="Contact">
        <ion-content>
          <div class="list">
            <div class="item">
              @IonicFramework
            </div>
            <div class="item">
              @DriftyTeam
            </div>
            <a ui-sref="home.facts.facts2" class="item">
              <h2>Facts 2</h2>
              <p>This links to the <code>home.facts.facts2</code> sub-state. Notice, the tab will switch to home, but we will still be able to navigate up the state tree to <code>home.facts</code> and <code>home</code></p>
            </a>
          </div>
        </ion-content>
      </ion-view>
    </script>

  </body>
</html>
            
          
!
            
              angular.module('ionicApp', ['ionic', 'stateBackButtonIonic'])

.config(function($stateProvider, $urlRouterProvider) {

  $stateProvider
    .state('scaffold', {
    abstract: true,
    templateUrl: "templates/scaffold.html"
    })
    .state('tabs', {
      url: "/tab",
    parent: "scaffold",
      abstract: true,
      templateUrl: "templates/tabs.html"
    })
    .state('home', {
      url: "/home",
      parent: "tabs",
      views: {
        'home-tab': {
          templateUrl: "templates/home.html",
          controller: 'HomeTabCtrl'
        }
      }
    })
    .state('home.facts', {
      url: "/facts",
      views: {
        'home-tab@tabs': {
          controller: "FactsCtrl",
          templateUrl: "templates/facts.html"
        }
      }
    })
    .state('home.facts.facts2', {
      url: "/facts2",
      views: {
        'home-tab@tabs': {
          templateUrl: "templates/facts2.html"
        }
      }
    })
    .state('tabs.about', {
      url: "/about",
      views: {
        'about-tab': {
          templateUrl: "templates/about.html"
        }
      }
    })
    .state('tabs.navstack', {
      url: "/navstack",
      views: {
        'about-tab': {
          templateUrl: "templates/nav-stack.html"
        }
      }
    })
    .state('tabs.contact', {
      url: "/contact",
      views: {
        'contact-tab': {
          templateUrl: "templates/contact.html"
        }
      }
    });


   $urlRouterProvider.otherwise("/tab/home/facts");

})
.controller('HomeTabCtrl', function($scope) {
  console.log('HomeTabCtrl');
})
.controller('FactsCtrl', function($ionicNavBarDelegate) {
  console.log('FactsCtrl');
});

angular.module('stateBackButtonIonic', [])
.config(function($provide) {
	$provide.decorator('$ionicViewService', function($delegate, $rootScope) {
		var registerFunction = $delegate.register;
		
		$delegate.register = function() {
			var viewHistory = $rootScope.$viewHistory,
			    rsp         = registerFunction.apply(this, arguments);
			
			if(viewHistory.forcedBack) {
				rsp.navAction = 'moveBack';
				rsp.navDirection = 'back';
				viewHistory.forcedBack = null;
				
				this.clearHistory();
			}
			
			return rsp;
		};
		return $delegate;
	});
})
.directive('prNavBackButton', function($animate, $rootScope, $sanitize, $state, $ionicNavBarConfig, $ionicNgClick) {
	var backIsShown = false,
			viewHistory = $rootScope.$viewHistory;

	function backViewIsPresent() {
		return viewHistory.backView && viewHistory.backView.historyId === viewHistory.currentView.historyId;
	}
	
	function parentStateIsPresent() {
		return !$state.$current.parent.abstract;
	}

	// Everytime history changes, check if the back button should be shown
	// We ignore ionic's data saying whether it should be or not, favoring our own logic
	$rootScope.$on('$viewHistory.historyChange', function() {
		backIsShown = backViewIsPresent() || parentStateIsPresent();
	});

	return {
		restrict: 'E',
		require: '^ionNavBar',
		compile: function(tElement) {
			tElement.addClass('button back-button ng-hide');

			var hasIconChild = !!(tElement.html() || '').match(/class=.*?ion-/);

			return function($scope, $element, $attr, navBarCtrl) {

				// Add a default back button icon based on the nav config, unless one is set
				if (!hasIconChild && $element[0].className.indexOf('ion-') === -1) {
					$element.addClass($ionicNavBarConfig.backButtonIcon);
				}

				//Default to ngClick going back, but don't override a custom one
				if (!angular.isDefined($attr.ngClick)) {
					$ionicNgClick($scope, $element, function() {
						if (backViewIsPresent()) {
							navBarCtrl.back();
						} else if (parentStateIsPresent()) {
							viewHistory.forcedBack = true;
							$state.go('^');
						} else {
							return false;
						}
					});
				}

				//Make sure both that a backButton is allowed in the first place,
				//and that it is shown by the current view.
				$scope.$watch(function() {
					if(angular.isDefined($attr.fromTitle)) {
						$element[0].innerHTML = '<span class="back-button-title">' + $sanitize($scope.oldTitle) + '</span>';
					}
					return !!(backIsShown && $scope.backButtonShown);
				}, ionic.animationFrameThrottle(function(show) {
					if (show) { $animate.removeClass($element, 'ng-hide');
					} else { $animate.addClass($element, 'ng-hide'); }
				}));
			};
		}
	};
})
.directive('ionTabs', function($rootScope, $state) {
	var viewHistory = $rootScope.$viewHistory;

	function getTabRootState(state) {
		var isRootState;
		
		if (state.parent.self.abstract === true) {
			isRootState = state.self.name;
		} else {
			isRootState = false;
		}
		
		return  isRootState || getTabRootState(state.parent);
	}

	return {
		restrict: 'E',
		require: 'ionTabs',
		link: function(scope, element, attr, ctrl) {
			var selectTab = ctrl.select;

			ctrl.select = function(tab, shouldEmitEvent) {
				var selectedTab = ctrl.selectedTab();

				if (selectedTab && selectedTab.$historyId == tab.$historyId) {
           if (shouldEmitEvent) {
             viewHistory.forcedBack = true;
             $state.go(getTabRootState($state.$current))
           }
				} else {
					selectTab.apply(this, arguments);
				}
			};
		}
	};
});
            
          
!
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