mirror of
https://github.com/atom0s/Steamless.git
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115 lines
No EOL
4.2 KiB
C#
115 lines
No EOL
4.2 KiB
C#
/**
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* Steamless - Copyright (c) 2015 - 2024 atom0s [atom0s@live.com]
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*
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* This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
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* To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/ or send a letter to
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* Creative Commons, PO Box 1866, Mountain View, CA 94042, USA.
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*
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* By using Steamless, you agree to the above license and its terms.
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*
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* Attribution - You must give appropriate credit, provide a link to the license and indicate if changes were
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* made. You must do so in any reasonable manner, but not in any way that suggests the licensor
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* endorses you or your use.
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*
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* Non-Commercial - You may not use the material (Steamless) for commercial purposes.
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*
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* No-Derivatives - If you remix, transform, or build upon the material (Steamless), you may not distribute the
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* modified material. You are, however, allowed to submit the modified works back to the original
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* Steamless project in attempt to have it added to the original project.
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*
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* You may not apply legal terms or technological measures that legally restrict others
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* from doing anything the license permits.
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*
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* No warranties are given.
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*/
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namespace Steamless.API.Model
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{
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using System;
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using System.ComponentModel;
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using System.Windows;
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public abstract class ViewModelBase : NotifiableModel
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{
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/// <summary>
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/// Default Constructor
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/// </summary>
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protected ViewModelBase()
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{
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this.Events = new EventHandlerList();
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}
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/// <summary>
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/// Internal static design mode flag.
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/// </summary>
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private static bool? m_IsInDesignMode;
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/// <summary>
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/// Gets if this ViewModelBase is in design mode.
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/// </summary>
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public bool IsInDesignMode => IsInDesignModeStatic;
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/// <summary>
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/// Gets the static ViewModelBase design mode flag.
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/// </summary>
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public static bool IsInDesignModeStatic
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{
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get
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{
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if (m_IsInDesignMode.HasValue)
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return m_IsInDesignMode.Value;
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var isInDesignModeProperty = DesignerProperties.IsInDesignModeProperty;
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m_IsInDesignMode = (bool)DependencyPropertyDescriptor.FromProperty(isInDesignModeProperty, typeof(FrameworkElement)).Metadata.DefaultValue;
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return m_IsInDesignMode.Value;
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}
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}
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/// <summary>
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/// Gets or sets the internal event handler list.
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/// </summary>
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private EventHandlerList Events
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{
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get => this.Get<EventHandlerList>("Events");
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set => this.Set("Events", value);
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}
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/// <summary>
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/// Event to subscribe to to be notified when a view is navigated from.
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/// </summary>
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public event EventHandler<NavigatedEventArgs> NavigatedFrom
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{
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add => this.Events.AddHandler("NavigatedFromEvent", value);
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remove => this.Events.RemoveHandler("NavigatedFromEvent", value);
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}
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/// <summary>
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/// Event to subscribe to to be notified when a view is navigated to.
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/// </summary>
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public event EventHandler<NavigatedEventArgs> NavigatedTo
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{
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add => this.Events.AddHandler("NavigatedToEvent", value);
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remove => this.Events.RemoveHandler("NavigatedToEvent", value);
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}
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/// <summary>
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/// Internal navigated from event invoker.
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/// </summary>
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/// <param name="e"></param>
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public void OnNavigatedFrom(NavigatedEventArgs e)
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{
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var eventHandler = (EventHandler<NavigatedEventArgs>)this.Events["NavigatedFromEvent"];
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eventHandler?.Invoke(this, e);
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}
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/// <summary>
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/// Internal navigated to event invoker.
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/// </summary>
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/// <param name="e"></param>
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public void OnNavigatedTo(NavigatedEventArgs e)
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{
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var eventHandler = (EventHandler<NavigatedEventArgs>)this.Events["NavigatedToEvent"];
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eventHandler?.Invoke(this, e);
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}
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}
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} |