Version 3.0.381

SharedBusinessLogic/View/BoolInverterConverter.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Globalization;
+using Xamarin.Forms;
+
+namespace ShareeBike.View
+{
+	/// <summary> Inverts a bool.</summary>
+	public class BoolInverterConverter : IValueConverter
+	{
+		/// <summary> Inverts a bool.</summary>
+		/// <param name="value">Bool to invert.</param>
+		/// <returns>Inverted bool.</returns>
+		public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+			=> value is bool flag && !flag;
+
+		public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+			=> value is bool flag && !flag;
+	}
+}

SharedBusinessLogic/View/IViewService.cs

@@ -0,0 +1,126 @@
+using System.Threading.Tasks;
+using ShareeBike.Model.Bikes.BikeInfoNS.DriveNS.BatteryNS;
+
+namespace ShareeBike.View
+{
+	public interface IViewService
+	{
+		/// <summary> Displays alert message. </summary>
+		/// <param name="title">Title of message.</param>
+		/// <param name="message">Message to display.</param>
+		/// <param name="cancel">Text of button.</param>
+		Task DisplayAlert(
+			string title,
+			string message,
+			string cancel);
+
+		/// <summary> Displays alert message. </summary>
+		/// <param name="title">Title of message.</param>
+		/// <param name="message">Message to display.</param>
+		/// <param name="details">Detailed error description.</param>
+		/// <param name="cancel">Text of button.</param>
+		Task DisplayAdvancedAlert(
+			string title,
+			string message,
+			string details,
+			string cancel);
+
+		/// <summary> Displays alert message. </summary>
+		/// <param name="title">Title of message.</param>
+		/// <param name="message">Message to display.</param>
+		/// <param name="accept">Text of accept button.</param>
+		/// <param name="cancel">Text of button.</param>
+		/// <returns>True if user pressed accept.</returns>
+		Task<bool> DisplayAlert(string title, string message, string accept, string cancel);
+
+		/// <summary> Displays alert message. </summary>
+		/// <param name="title">Title of message.</param>
+		/// <param name="message">Message to display.</param>
+		/// <param name="details">Detailed error description.</param>
+		/// <param name="accept">Text of accept button.</param>
+		/// <param name="cancel">Text of button.</param>
+		/// <returns>True if user pressed accept.</returns>
+		Task<bool> DisplayAdvancedAlert(string title, string message, string details, string accept, string cancel);
+
+		/// <summary> Displays an action sheet. </summary>
+		/// <param name="title">Title of message.</param>
+		/// <param name="message">Message to display.</param>
+		/// <param name="cancel">Text of button.</param>
+		/// <param name="destruction"></param>
+		/// <param name="buttons">Buttons holding options to select.</param>
+		/// <returns>T</returns>
+		Task<string> DisplayActionSheet(string title, string cancel, string destruction, params string[] buttons);
+
+		/// <summary> Shows a page.</summary>
+		/// <param name="route">Route of the page to show.</param>
+#if USCSHARP9
+        public Task ShowPage(string route);
+#else
+		Task ShowPage(string route);
+#endif
+
+		/// <summary> Pushes a page onto the stack. </summary>
+		/// <param name="typeOfPage">Page to display.</param>
+		Task PushAsync(ViewTypes typeOfPage);
+
+		/// <summary> Pushes a page onto the modal stack. </summary>
+		/// <param name="typeOfPage">Page to display.</param>
+		Task PushModalAsync(ViewTypes typeOfPage);
+
+		/// <summary> Pushes a page onto the modal stack. </summary>
+		Task PopModalAsync();
+
+		/// <summary> Displays user feedback popup.</summary>
+		/// <param name="battery">Object holding info about battery. For some batteries charging level might need to be updated by user.</param>
+		/// <returns>User feedback.</returns>
+		Task<IUserFeedback> DisplayUserFeedbackPopup(
+			IBatteryMutable battery = null);
+
+#if USCSHARP9
+        /// <summary>
+        /// Feedback given by user when returning bike.
+        /// </summary>
+        public interface IUserFeedback
+        {
+            /// <summary>
+            /// Holds whether bike is broken or not.
+            /// </summary>
+            bool IsBikeBroken { get; set; }
+
+            /// <summary>
+            /// Holds either 
+            /// - general feedback
+            /// - error description of broken bike 
+            /// or both.
+            /// </summary>
+            string Message { get; set; }
+        }
+#endif
+	}
+
+#if !USCSHARP9
+	/// <summary>
+	/// Feedback given by user when returning bike.
+	/// </summary>
+	public interface IUserFeedback
+	{
+		/// <summary>
+		/// Holds the current charging level of the battery in bars, null if unknown.
+		/// </summary>
+		int? CurrentChargeBars { get; set; }
+
+		/// <summary>
+		/// Holds whether bike is broken or not.
+		/// </summary>
+		bool IsBikeBroken { get; set; }
+
+		/// <summary>
+		/// Holds either 
+		/// - general feedback
+		/// - error description of broken bike 
+		/// or both.
+		/// </summary>
+		string Message { get; set; }
+	}
+#endif
+}

SharedBusinessLogic/View/ListViewAttachedBehavior.cs

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+using System.Windows.Input;
+using Xamarin.Forms;
+
+namespace ShareeBike.View
+{
+	public static class ListViewAttachedBehavior
+	{
+		public static readonly BindableProperty CommandProperty =
+			BindableProperty.CreateAttached(
+				"Command",
+				typeof(ICommand),
+				typeof(ListViewAttachedBehavior),
+				null,
+				propertyChanged: OnCommandChanged);
+
+		static void OnCommandChanged(BindableObject view, object oldValue, object newValue)
+		{
+			var entry = view as ListView;
+			if (entry == null)
+				return;
+
+			entry.ItemTapped += (sender, e) =>
+			{
+				var command = (newValue as ICommand);
+				if (command == null)
+					return;
+
+				if (command.CanExecute(e.Item))
+				{
+					command.Execute(e.Item);
+				}
+			};
+		}
+	}
+}

SharedBusinessLogic/View/Settings/BackendPermissionsToVisibleConverter.cs

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+using System;
+using System.Globalization;
+using ShareeBike.Model.User.Account;
+using Xamarin.Forms;
+
+namespace ShareeBike.View.Settings
+{
+
+	/// <summary> 
+	/// Translates user permissions into visibility state. 
+	/// Used for container which holds a bunch of GUI elemets which migth all/ partly/ none be visible
+	/// If all childs are invisible frame must be invisible as well. As soon as one child is visible frame must be visible as well.
+	/// </summary>
+	public class BackendPermissionsToVisibleConverter : IValueConverter
+	{
+		/// <summary> Converts permission value into visible state.</summary>
+		/// <param name="value">Permission value from view model used to derive whether object is visible or not.</param>
+		/// <returns>Boolean value indicating whether object is visible or not.</returns>
+		public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+		{
+			var enumValue = (Permissions)value;
+			return enumValue.HasFlag(Permissions.PickCopriServer) | enumValue.HasFlag(Permissions.ManagePolling) | enumValue.HasFlag(Permissions.ManageCopriCacheExpiration);
+		}
+
+		public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+		{
+			return Permissions.None;
+		}
+	}
+}

SharedBusinessLogic/View/Settings/PermissionToVisibleConverter.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Globalization;
+using ShareeBike.Model.User.Account;
+using Xamarin.Forms;
+
+namespace ShareeBike.View.Settings
+{
+	/// <summary> Translates user permissions into visibility state. </summary>
+	public class PermissionToVisibleConverter : BindableObject, IValueConverter
+	{
+		static readonly BindableProperty VisibleFlagProperty =
+			BindableProperty.Create(nameof(VisibleFlag), typeof(Permissions), typeof(BindableObject));
+
+		/// <summary> Property set from XAML determinig for which permission value object is visible.</summary>
+		public Permissions VisibleFlag
+		{
+			get => (Permissions)GetValue(VisibleFlagProperty);
+			set => SetValue(VisibleFlagProperty, value);
+		}
+
+		/// <summary> Converts permission value into visible state.</summary>
+		/// <param name="value">Permission value from view model used to derive whether object is visible or not.</param>
+		/// <returns>Boolean value indicating whether object is visible or not.</returns>
+		public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+		{
+			return ((Permissions)value).HasFlag(VisibleFlag);
+		}
+
+		public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+		{
+			return Permissions.None;
+		}
+	}
+}

SharedBusinessLogic/View/StringNotNullOrEmptyToVisibleConverter.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Globalization;
+using Xamarin.Forms;
+
+namespace ShareeBike.View
+{
+	/// <summary> Converts a string into visible state. If string is null or empty element becomes invisible.</summary>
+	public class StringNotNullOrEmptyToVisibleConverter : IValueConverter
+	{
+		/// <summary> Converts a string into visible state.</summary>
+		/// <param name="value">Text value from view model used to derive whether object is visible or not.</param>
+		/// <returns>Boolean value indicating whether object is visible or not.</returns>
+		public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+		{
+			return value != null && value is string text && !string.IsNullOrEmpty(text);
+		}
+
+		public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+		{
+			return "";
+		}
+	}
+}

SharedBusinessLogic/View/Themes/ITheme.cs

@@ -0,0 +1,7 @@
+namespace ShareeBike.View.Themes
+{
+	public interface ITheme
+	{
+		string OperatorInfo { get; }
+	}
+}

SharedBusinessLogic/View/Themes/LastenradBayern.xaml

@@ -0,0 +1,196 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ResourceDictionary
+	xmlns="http://xamarin.com/schemas/2014/forms"
+	xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+	xmlns:android="clr-namespace:Xamarin.Forms.PlatformConfiguration.AndroidSpecific;assembly=Xamarin.Forms.Core"
+	x:Class="ShareeBike.Themes.LastenradBayern">
+
+	<!--Main color-->
+	<Color x:Key="primary-back-title-color">#009BDB</Color>
+	<Color x:Key="bright-primary-back-title-color">#C5E6E6</Color>
+
+	<!--Background color-->
+	<Color x:Key="background-color">#BEBEBE</Color>
+
+	<!--Important text color-->
+	<Color x:Key="important-text-color">#ff0000</Color>
+
+	<!--Attention color-->
+	<Color x:Key="attention-color">#FF9214</Color>
+
+	<!--RentalProcess colors-->
+	<Color x:Key="process-step-upcoming">#999999</Color>
+	<Color x:Key="process-step-active">#0D0D0D</Color>
+	<Color x:Key="process-step-succeeded">#00813e</Color>
+	<Color x:Key="process-step-failed">#ff0000</Color>
+
+	<!--Primary Button-->
+	<Style TargetType="Button">
+		<Setter Property="WidthRequest" Value="400" />
+		<Setter Property="HorizontalOptions" Value="Center" />
+		<Setter Property="BorderWidth" Value="1"/>
+		<Setter Property="CornerRadius" Value="0" />
+		<Setter Property="FontSize" Value="Medium"/>
+		<Setter Property="FontFamily" Value="RobotoRegular"/>
+		<Setter Property="BorderColor" Value="{DynamicResource Key=primary-back-title-color}"/>
+		<Setter Property="BackgroundColor" Value="{DynamicResource Key=primary-back-title-color}"/>
+		<Setter Property="TextColor" Value="White"/>
+		<Style.Triggers>
+			<Trigger TargetType="Button"
+                             Property="IsEnabled"
+                             Value="False">
+				<Setter Property="BorderColor" Value="DimGray"/>
+				<Setter Property="BackgroundColor" Value="DimGray"/>
+				<Setter Property="TextColor" Value="LightGray"/>
+			</Trigger>
+		</Style.Triggers>
+	</Style>
+
+	<!--Secondary Button-->
+	<Style x:Key="SecondaryButton" TargetType="Button">
+		<Setter Property="WidthRequest" Value="400" />
+		<Setter Property="HorizontalOptions" Value="Center" />
+		<Setter Property="BorderWidth" Value="1"/>
+		<Setter Property="CornerRadius" Value="0" />
+		<Setter Property="FontSize" Value="Medium"/>
+		<Setter Property="FontFamily" Value="RobotoRegular"/>
+		<Setter Property="BorderColor" Value="{DynamicResource Key=primary-back-title-color}"/>
+		<Setter Property="BackgroundColor" Value="White"/>
+		<Setter Property="TextColor" Value="{DynamicResource Key=primary-back-title-color}"/>
+		<Style.Triggers>
+			<Trigger TargetType="Button"
+                             Property="IsEnabled"
+                             Value="False">
+				<Setter Property="BorderColor" Value="DimGray"/>
+				<Setter Property="BackgroundColor" Value="LightGray"/>
+				<Setter Property="TextColor" Value="DimGray"/>
+			</Trigger>
+		</Style.Triggers>
+	</Style>
+
+	<!--Button without outline-->
+	<Style x:Key="NoOutlineButtonWhite" TargetType="Button">
+		<Setter Property="WidthRequest" Value="400" />
+		<Setter Property="HorizontalOptions" Value="Center" />
+		<Setter Property="BorderWidth" Value="1"/>
+		<Setter Property="CornerRadius" Value="0" />
+		<Setter Property="FontSize" Value="Medium"/>
+		<Setter Property="FontFamily" Value="RobotoRegular"/>
+		<Setter Property="BorderColor" Value="White"/>
+		<Setter Property="BackgroundColor" Value="White"/>
+		<Setter Property="TextColor" Value="{DynamicResource Key=primary-back-title-color}"/>
+		<Style.Triggers>
+			<Trigger TargetType="Button"
+                             Property="IsEnabled"
+                             Value="False">
+				<Setter Property="TextColor" Value="DimGray"/>
+			</Trigger>
+		</Style.Triggers>
+	</Style>
+
+	<Style x:Key="NoOutlineButtonBackgroundColor" TargetType="Button">
+		<Setter Property="WidthRequest" Value="400" />
+		<Setter Property="HorizontalOptions" Value="Center" />
+		<Setter Property="BorderWidth" Value="1"/>
+		<Setter Property="CornerRadius" Value="0" />
+		<Setter Property="FontSize" Value="Medium"/>
+		<Setter Property="FontFamily" Value="RobotoRegular"/>
+		<Setter Property="BorderColor" Value="{DynamicResource Key=background-color}"/>
+		<Setter Property="BackgroundColor" Value="{DynamicResource Key=background-color}"/>
+		<Setter Property="TextColor" Value="{DynamicResource Key=primary-back-title-color}"/>
+		<Style.Triggers>
+			<Trigger TargetType="Button"
+                         Property="IsEnabled"
+                         Value="False">
+				<Setter Property="TextColor" Value="DimGray"/>
+			</Trigger>
+		</Style.Triggers>
+	</Style>
+
+	<!--Frame-->
+	<Style TargetType="Frame">
+		<Setter Property="CornerRadius" Value="0" />
+		<Setter Property="HasShadow" Value="False" />
+	</Style>
+
+	<Style x:Key="RunningProcessFrame" TargetType="Frame">
+		<Setter Property="CornerRadius" Value="0" />
+		<Setter Property="HasShadow" Value="False" />
+	</Style>
+
+	<!--Switch-->
+	<Style TargetType="Switch">
+		<Style.Triggers>
+			<Trigger TargetType="Switch"
+                             Property="IsToggled"
+                             Value="True">
+				<Setter Property="ThumbColor" Value="{DynamicResource Key=primary-back-title-color}"/>
+				<Setter Property="OnColor" Value="{DynamicResource Key=bright-primary-back-title-color}"/>
+			</Trigger>
+			<Trigger TargetType="Switch"
+                             Property="IsToggled"
+                             Value="False">
+				<Setter Property="ThumbColor" Value="DimGray"/>
+			</Trigger>
+		</Style.Triggers>
+	</Style>
+
+	<!--Slider-->
+	<Style TargetType="Slider">
+		<Setter Property="ThumbColor" Value="{DynamicResource Key=primary-back-title-color}"/>
+	</Style>
+
+	<!--Label-->
+	<Style TargetType="Label">
+		<Setter Property="FontSize" Value="Default"/>
+		<Setter Property="FontFamily" Value="RobotoRegular"/>
+		<Style.Triggers>
+			<Trigger TargetType="Label"
+                             Property="FontAttributes"
+                             Value="Bold">
+				<Setter Property="FontFamily" Value="RobotoBold"/>
+			</Trigger>
+			<Trigger TargetType="Label"
+                             Property="FontAttributes"
+                             Value="Italic">
+				<Setter Property="FontFamily" Value="RobotoItalic"/>
+			</Trigger>
+		</Style.Triggers>
+	</Style>
+
+	<!--Entry-->
+	<Style TargetType="Entry">
+		<Setter Property="FontSize" Value="Default"/>
+		<Setter Property="FontFamily" Value="RobotoRegular"/>
+	</Style>
+
+	<!--Flyout Item-->
+	<Style TargetType="FlyoutItem">
+		<Setter Property="Shell.BackgroundColor" Value="{DynamicResource Key=primary-back-title-color}" />
+	</Style>
+
+	<!--Navbar-->
+	<Style x:Key="Label-Navbar" TargetType="Label">
+		<Setter Property="FontSize" Value="20"/>
+		<Setter Property="FontFamily" Value="RobotoRegular"/>
+		<Setter Property="TextColor" Value="White"/>
+		<Setter Property="VerticalOptions" Value="Start"/>
+		<Setter Property="HorizontalOptions" Value="Start"/>
+		<Setter Property="Padding" Value="0,14,0,12"/>
+		<Setter Property="MaxLines" Value="1"/>
+	</Style>
+	<Style x:Key="Image-Navbar" TargetType="Image">
+		<Setter Property="Source" Value="navbar_theme.png"/>
+		<Setter Property="Aspect" Value="AspectFill"/>
+		<Setter Property="Grid.ColumnSpan" Value="2"/>
+	</Style>
+
+	<!--TabbedPage-->
+	<Style x:Key="TabbedPageStyle" TargetType="TabbedPage">
+		<Setter Property="BarBackgroundColor" Value="White"/>
+		<Setter Property="UnselectedTabColor" Value="DimGray"/>
+		<Setter Property="SelectedTabColor" Value="{x:DynamicResource primary-back-title-color}"/>
+		<Setter Property="android:TabbedPage.ToolbarPlacement" Value="Default"/>
+	</Style>
+
+</ResourceDictionary>

SharedBusinessLogic/View/Themes/LastenradBayern.xaml.cs

@@ -0,0 +1,19 @@
+using ShareeBike.View.Themes;
+using Xamarin.Forms;
+using Xamarin.Forms.Xaml;
+
+namespace ShareeBike.Themes
+{
+	[XamlCompilation(XamlCompilationOptions.Compile)]
+	public partial class LastenradBayern : ResourceDictionary, ITheme
+	{
+		public const string OPERATORINFO = "Lastenrad Bayern";
+
+		public LastenradBayern()
+		{
+			InitializeComponent();
+		}
+
+		public string OperatorInfo => OPERATORINFO;
+	}
+}

SharedBusinessLogic/View/Themes/ShareeBike.xaml

@@ -0,0 +1,196 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ResourceDictionary
+	xmlns="http://xamarin.com/schemas/2014/forms"
+	xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+	xmlns:android="clr-namespace:Xamarin.Forms.PlatformConfiguration.AndroidSpecific;assembly=Xamarin.Forms.Core"
+	x:Class="ShareeBike.Themes.ShareeBike">
+
+	<!--Main color-->
+	<Color x:Key="primary-back-title-color">#009899</Color>
+	<Color x:Key="bright-primary-back-title-color">#B5E6E6</Color>
+
+	<!--Background color-->
+	<Color x:Key="background-color">#BEBEBE</Color>
+
+	<!--Important text color-->
+	<Color x:Key="important-text-color">#BF2828</Color>
+
+	<!--Attention color-->
+	<Color x:Key="attention-color">#FC870D</Color>
+
+	<!--RentalProcess colors-->
+	<Color x:Key="process-step-upcoming">#999999</Color>
+	<Color x:Key="process-step-active">#0D0D0D</Color>
+	<Color x:Key="process-step-succeeded">#5DBF3B</Color>
+	<Color x:Key="process-step-failed">#BF2828</Color>
+
+	<!--Primary Button-->
+    <Style TargetType="Button">
+        <Setter Property="WidthRequest" Value="400" />
+        <Setter Property="HorizontalOptions" Value="Center" />
+        <Setter Property="BorderWidth" Value="1"/>
+        <Setter Property="CornerRadius" Value="10" />
+        <Setter Property="FontSize" Value="Medium"/>
+		<Setter Property="FontFamily" Value="RobotoRegular"/>
+		<Setter Property="BorderColor" Value="{DynamicResource Key=primary-back-title-color}"/>
+		<Setter Property="BackgroundColor" Value="{DynamicResource Key=primary-back-title-color}"/>
+		<Setter Property="TextColor" Value="White"/>
+		<Style.Triggers>
+			<Trigger TargetType="Button"
+                             Property="IsEnabled"
+                             Value="False">
+                <Setter Property="BorderColor" Value="DimGray"/>
+                <Setter Property="BackgroundColor" Value="DimGray"/>
+				<Setter Property="TextColor" Value="LightGray"/>
+            </Trigger>
+        </Style.Triggers>
+    </Style>
+	
+	<!--Secondary Button-->
+    <Style x:Key="SecondaryButton" TargetType="Button">
+        <Setter Property="WidthRequest" Value="400" />
+        <Setter Property="HorizontalOptions" Value="Center" />
+        <Setter Property="BorderWidth" Value="1"/>
+        <Setter Property="CornerRadius" Value="10" />
+        <Setter Property="FontSize" Value="Medium"/>
+		<Setter Property="FontFamily" Value="RobotoRegular"/>
+		<Setter Property="BorderColor" Value="{DynamicResource Key=primary-back-title-color}"/>
+		<Setter Property="BackgroundColor" Value="White"/>
+		<Setter Property="TextColor" Value="{DynamicResource Key=primary-back-title-color}"/>
+		<Style.Triggers>
+			<Trigger TargetType="Button"
+                             Property="IsEnabled"
+                             Value="False">
+                <Setter Property="BorderColor" Value="DimGray"/>
+                <Setter Property="BackgroundColor" Value="LightGray"/>
+				<Setter Property="TextColor" Value="DimGray"/>
+            </Trigger>
+        </Style.Triggers>
+    </Style>
+
+	<!--Button without outline-->
+	<Style x:Key="NoOutlineButtonWhite" TargetType="Button">
+		<Setter Property="WidthRequest" Value="400" />
+		<Setter Property="HorizontalOptions" Value="Center" />
+		<Setter Property="BorderWidth" Value="1"/>
+		<Setter Property="CornerRadius" Value="10" />
+		<Setter Property="FontSize" Value="Medium"/>
+		<Setter Property="FontFamily" Value="RobotoRegular"/>
+		<Setter Property="BorderColor" Value="White"/>
+		<Setter Property="BackgroundColor" Value="White"/>
+		<Setter Property="TextColor" Value="{DynamicResource Key=primary-back-title-color}"/>
+		<Style.Triggers>
+			<Trigger TargetType="Button"
+                             Property="IsEnabled"
+                             Value="False">
+				<Setter Property="TextColor" Value="DimGray"/>
+			</Trigger>
+		</Style.Triggers>
+	</Style>
+
+	<Style x:Key="NoOutlineButtonBackgroundColor" TargetType="Button">
+		<Setter Property="WidthRequest" Value="400" />
+		<Setter Property="HorizontalOptions" Value="Center" />
+		<Setter Property="BorderWidth" Value="1"/>
+		<Setter Property="CornerRadius" Value="10" />
+		<Setter Property="FontSize" Value="Medium"/>
+		<Setter Property="FontFamily" Value="RobotoRegular"/>
+		<Setter Property="BorderColor" Value="{DynamicResource Key=background-color}"/>
+		<Setter Property="BackgroundColor" Value="{DynamicResource Key=background-color}"/>
+		<Setter Property="TextColor" Value="{DynamicResource Key=primary-back-title-color}"/>
+		<Style.Triggers>
+			<Trigger TargetType="Button"
+                         Property="IsEnabled"
+                         Value="False">
+				<Setter Property="TextColor" Value="DimGray"/>
+			</Trigger>
+		</Style.Triggers>
+	</Style>
+
+	<!--Frame-->
+	<Style TargetType="Frame">
+		<Setter Property="CornerRadius" Value="0" />
+		<Setter Property="HasShadow" Value="False" />
+	</Style>
+
+	<Style x:Key="RunningProcessFrame" TargetType="Frame">
+		<Setter Property="CornerRadius" Value="10" />
+		<Setter Property="HasShadow" Value="False" />
+	</Style>
+
+	<!--Switch-->
+    <Style TargetType="Switch">
+        <Style.Triggers>
+            <Trigger TargetType="Switch"
+                             Property="IsToggled"
+                             Value="True">
+                <Setter Property="ThumbColor" Value="{DynamicResource Key=primary-back-title-color}"/>
+				<Setter Property="OnColor" Value="{DynamicResource Key=bright-primary-back-title-color}"/>
+            </Trigger>
+            <Trigger TargetType="Switch"
+                             Property="IsToggled"
+                             Value="False">
+				<Setter Property="ThumbColor" Value="DimGray"/>
+			</Trigger>
+        </Style.Triggers>
+    </Style>
+	
+	<!--Slider-->
+    <Style TargetType="Slider">
+		<Setter Property="ThumbColor" Value="{DynamicResource Key=primary-back-title-color}"/>
+	</Style>
+
+	<!--Label-->
+	<Style TargetType="Label">
+		<Setter Property="FontSize" Value="Default"/>
+		<Setter Property="FontFamily" Value="RobotoRegular"/>
+		<Style.Triggers>
+			<Trigger TargetType="Label"
+                             Property="FontAttributes"
+                             Value="Bold">
+				<Setter Property="FontFamily" Value="RobotoBold"/>
+			</Trigger>
+			<Trigger TargetType="Label"
+                             Property="FontAttributes"
+                             Value="Italic">
+				<Setter Property="FontFamily" Value="RobotoItalic"/>
+			</Trigger>
+		</Style.Triggers>
+	</Style>
+
+	<!--Entry-->
+	<Style TargetType="Entry">
+		<Setter Property="FontSize" Value="Default"/>
+		<Setter Property="FontFamily" Value="RobotoRegular"/>
+	</Style>
+
+	<!--Flyout Item-->
+    <Style TargetType="FlyoutItem">
+        <Setter Property="Shell.BackgroundColor" Value="{DynamicResource Key=primary-back-title-color}" />
+    </Style>
+
+	<!--Navbar-->
+    <Style x:Key="Label-Navbar" TargetType="Label">
+		<Setter Property="FontSize" Value="20"/>
+		<Setter Property="FontFamily" Value="RobotoRegular"/>
+		<Setter Property="TextColor" Value="White"/>
+        <Setter Property="VerticalOptions" Value="Start"/>
+		<Setter Property="HorizontalOptions" Value="Start"/>
+		<Setter Property="Padding" Value="0,14,0,12"/>
+		<Setter Property="MaxLines" Value="1"/>
+	</Style>
+	<Style x:Key="Image-Navbar" TargetType="Image">
+		<Setter Property="Source" Value="navbar_theme.png"/>
+		<Setter Property="Aspect" Value="AspectFill"/>
+		<Setter Property="Grid.ColumnSpan" Value="2"/>
+	</Style>
+
+	<!--TabbedPage-->
+	<Style x:Key="TabbedPageStyle" TargetType="TabbedPage">
+		<Setter Property="BarBackgroundColor" Value="White"/>
+		<Setter Property="UnselectedTabColor" Value="DimGray"/>
+		<Setter Property="SelectedTabColor" Value="{x:DynamicResource primary-back-title-color}"/>
+		<Setter Property="android:TabbedPage.ToolbarPlacement" Value="Default"/>
+	</Style>
+
+</ResourceDictionary>

SharedBusinessLogic/View/Themes/ShareeBike.xaml.cs

@@ -0,0 +1,19 @@
+using ShareeBike.View.Themes;
+using Xamarin.Forms;
+using Xamarin.Forms.Xaml;
+
+namespace ShareeBike.Themes
+{
+	[XamlCompilation(XamlCompilationOptions.Compile)]
+	public partial class ShareeBike : ResourceDictionary, ITheme
+	{
+		public const string OPERATORINFO = "sharee.bike";
+
+		public ShareeBike()
+		{
+			InitializeComponent();
+		}
+
+		public string OperatorInfo => OPERATORINFO;
+	}
+}

SharedBusinessLogic/View/WebViewHelper.cs

@@ -0,0 +1,175 @@
+using System.Linq;
+using Serilog;
+using ShareeBike.Model.Device;
+using Xamarin.Forms;
+
+namespace ShareeBike.View
+{
+	public static class WebViewHelper
+	{
+		/// <summary> Rountes request to browser if internal URI was detected or displays link in app otherwise. </summary>
+		/// <param name="sender">Sender of the event.</param>
+		/// <param name="eventArgs">Event arguments</param>
+		public static void SelectDisplayTarget(object sender, WebNavigatingEventArgs eventArgs)
+		{
+			if (!eventArgs.Url.ToUpper().StartsWith("HTTP"))
+			{
+				// An internal link was detected.
+				// Stay inside WebView
+				eventArgs.Cancel = false;
+				return;
+			}
+
+			// Do not navigate outside the document on web view.
+			eventArgs.Cancel = true;
+			// Open external link in browser.
+			DependencyService.Get<IExternalBrowserService>().OpenUrl(eventArgs.Url);
+		}
+
+		/// <summary> Routes request to broswer to download pdf- documents or displays link in app otherwise. </summary>
+		/// <param name="sender">Sender of the event.</param>
+		/// <param name="eventArgs">Event arguments</param>
+		public static void SetBusyAndDisplayOrDownload(object sender, WebNavigatingEventArgs eventArgs)
+		{
+			if (!eventArgs.Url.ToUpper().EndsWith(".PDF"))
+			{
+				// Stay inside web view except for downloading pdf- files.
+				SetBusy(sender);
+				eventArgs.Cancel = false;
+				return;
+			}
+
+			// Do not navigate outside the document on web view.
+			eventArgs.Cancel = true;
+			// Open external link in browser.
+			DependencyService.Get<IExternalBrowserService>().OpenUrl(eventArgs.Url);
+		}
+
+		/// <summary>
+		/// Disables WebView and shows ActivityIndicator.
+		/// </summary>
+		/// <remarks>
+		/// Prerequisites: Both WebView and ActivityInicator must be located on the same Grid object.
+		/// </remarks>
+		/// <param name="sender"></param>
+		private static void SetBusy(object sender)
+		{
+			if (!(sender is WebView webView))
+			{
+				// Nothing to do if sender is not a web view.
+				Log.Error($"Unexpected call of {nameof(SetBusy)} detected. Argument must not be of type {sender.GetType()}.");
+				return;
+			}
+
+			if (!(webView.Parent is Grid grid))
+			{
+				// Nothing to do if web view is not located on grid.
+				Log.Error($"Unexpected call of {nameof(SetBusy)} detected. Parent of argument must not be of type {webView.Parent.GetType()}.");
+				return;
+			}
+
+			grid.IsEnabled = false;
+
+			var indicator = grid.Children.OfType<ActivityIndicator>().FirstOrDefault();
+			if (indicator == null)
+			{
+				// Nothing to do if there is not activity indicator.
+				Log.Error($"Unexpected call of {nameof(SetBusy)} detected. No activity indicator found.");
+				return;
+			}
+
+			indicator.IsVisible = true;
+			indicator.IsRunning = true;
+		}
+
+		/// <summary>
+		/// Enables WebView and hides ActivityIndicator and sets error text to WebView in case an error occurred.
+		/// </summary>
+		/// <remarks>
+		/// Prerequisites: Both WebView and ActivityInicator must be located on the same Grid object.
+		/// </remarks>
+		/// <param name="htmlErrorMessage">HTML showing an error message.</param>
+		public static void SetIdleAndHandleError(
+			object sender,
+			WebNavigatedEventArgs eventArgs,
+			string htmlErrorMessage)
+		{
+			if (!(sender is WebView webView))
+			{
+				// Nothing to do if sender is not a web view.
+				Log.Error($"Unexpected call of {nameof(SetIdleAndHandleError)} detected. Argument must not be of type {sender.GetType()}.");
+				return;
+			}
+
+			if (!(webView.Parent is Grid grid))
+			{
+				// Nothing to do if web view is not located on grid.
+				Log.Error($"Unexpected call of {nameof(SetIdleAndHandleError)} detected. Parent of argument must not be of type {webView.Parent.GetType()}.");
+				return;
+			}
+
+			var indicator = grid.Children.OfType<ActivityIndicator>().FirstOrDefault();
+			if (indicator == null)
+			{
+				// Nothing to do if there is not activity indicator.
+				Log.Error($"Unexpected call of {nameof(SetIdleAndHandleError)} detected. No activity indicator found.");
+			}
+
+			if (eventArgs.Result == WebNavigationResult.Success)
+			{
+				// Uri could be loaded successfully.
+				grid.IsEnabled = true;
+				if (indicator != null)
+				{
+					indicator.IsVisible = false;
+					indicator.IsRunning = false;
+				}
+				return;
+			}
+
+			// Navigation failed.
+			Log.Error("Navigation did not succeed.{@Event}{@Sender}", eventArgs, sender);
+			webView.Source = new HtmlWebViewSource
+			{
+				Html = !string.IsNullOrEmpty(htmlErrorMessage) ? htmlErrorMessage : $"Navigation to {eventArgs.Url} failed."
+			};
+
+			grid.IsEnabled = true;
+			if (indicator != null)
+			{
+				indicator.IsVisible = false;
+				indicator.IsRunning = false;
+			}
+		}
+
+		/// <summary>
+		/// Sets error text to WebView in case an error occurred.
+		/// </summary>
+		/// <param name="htmlErrorMessage">HTML showing an error message.</param>
+		public static void HandleError(
+			object sender,
+			WebNavigatedEventArgs eventArgs,
+			string htmlErrorMessage)
+		{
+			if (eventArgs.Result == WebNavigationResult.Success)
+			{
+				// Uri could be loaded successfully.
+				return;
+			}
+
+			if (!(sender is WebView webView))
+			{
+				// Nothing to do if sender is not a web view.
+				Log.Error($"Unexpected call of {nameof(HandleError)} detected. Argument must not be of type {sender.GetType()}.");
+				return;
+			}
+
+			// Navigation failed.
+			Log.Error("Navigation did not succeed.{@Event}{@Sender}", eventArgs, sender);
+			webView.Source = new HtmlWebViewSource
+			{
+				Html = !string.IsNullOrEmpty(htmlErrorMessage) ? htmlErrorMessage : $"Navigation to {eventArgs.Url} failed."
+			};
+		}
+	}
+}