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<!DOCTYPE html>
<html ng-app="app">
<head>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular.min.js"></script>
  <meta charset="utf-8">
  <title>JS Bin</title>
</head>
<body ng-controller="StartController">
  <div data-ng-show="project.data.project !== null" class="zoom top-right">
    <div>
        <form name="zoomForm" data-ng-init="setFormScope(this)">
            <img src="/styles/images/16x16/FI_Verkleinern.png" data-ng-click="zoom.decrement()" alt="Zoom -" title="Zoom -" />
            <input class="slider" type="range" min="{{zoom.data.lowerBound}}" max="{{zoom.data.upperBound}}" data-ng-model="zoom.data.zoom" />
            <img src="/styles/images/16x16/FI_Vergroessern.png" data-ng-click="zoom.increment()" alt="Zoom +" title="Zoom +"/>
            <input name="directZoom" type="text" data-ng-minlength="2" data-ng-maxlength="3" data-ng-pattern="/^[0-9]{2,3}$/" data-ng-model="zoom.data.zoom" data-ng-keyup="cancel($event)" />
        </form>
    </div>
</div>
</body>
</html>
 
var app = angular.module('app', []);
​
app.service("zoomService", ["$rootScope", function ($rootScope) {
​
    var data = {
        zoom: 100,
        upperBound: 200, // TODO: Aus Konfigurationsdatei lesen
        lowerBound: 20 // TODO: Aus Konfigurationsdatei lesen
    };
​
    return {
        data: data,
​
        increment: function() {
            if ($rootScope.$root.$$phase != "$apply" && $rootScope.$root.$$phase != "$digest") {
                $rootScope.$apply(function() {
                    if (data.zoom + 1 <= data.upperBound)
                        data.zoom++;
                });
            } else {
                if (data.zoom + 1 <= data.upperBound)
                    data.zoom++;
            }
        },
​
        decrement: function() {
            if ($rootScope.$root.$$phase != "$apply" && $rootScope.$root.$$phase != "$digest") {
                $rootScope.$apply(function () {
                    if (data.zoom - 1 >= data.lowerBound)
                        data.zoom--;
                });
            } else {
                if (data.zoom - 1 >= lowerBound)
                    data.zoom--;
            }
        },
​
        reset: function() {
            if ($rootScope.$root.$$phase != "$apply" && $rootScope.$root.$$phase != "$digest") {
                $rootScope.$apply(function () {
                    data.zoom = 100;
                });
            } else {
                data.zoom = 100;
            }
        }
    }
}]);
​
app.controller("StartController", ["$scope", "zoomService", function($scope, zoomService) {
​
    $scope.zoom = zoomService;
​
}]);
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