35 lines
1.6 KiB
C#
35 lines
1.6 KiB
C#
namespace UnityEditor.Timeline.Actions
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{
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/// <summary>
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/// Base class for a timeline action.
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/// Inherit from this class to make an action on a timeline after a menu click and/or a key shortcut.
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/// </summary>
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/// <remarks>
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/// To add an action as a menu item in the Timeline context menu, add <see cref="MenuEntryAttribute"/> on the action class.
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/// To make an action to react to a shortcut, use the Shortcut Manager API with <see cref="TimelineShortcutAttribute"/>.
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/// <seealso cref="UnityEditor.ShortcutManagement.ShortcutAttribute"/>
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/// <seealso cref="ActiveInModeAttribute"/>
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/// </remarks>
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/// <example>
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/// Simple Timeline Action example (with context menu and shortcut support).
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/// <code source="../../DocCodeExamples/ActionExamples.cs" region="declare-sampleTimelineAction" title="SampleTimelineAction"/>
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/// </example>
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[ActiveInMode(TimelineModes.Default)]
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public abstract class TimelineAction : IAction
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{
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/// <summary>
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/// Execute the action.
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/// </summary>
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/// <param name="context">Context for the action.</param>
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/// <returns>true if the action has been executed. false otherwise</returns>
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public abstract bool Execute(ActionContext context);
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/// <summary>
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/// Defines the validity of an Action based on the context.
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/// </summary>
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/// <param name="context">Context for the action.</param>
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/// <returns>Visual state of the menu for the action.</returns>
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public abstract ActionValidity Validate(ActionContext context);
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}
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}
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