ActionSequenceDrawer

Specialized Odin property drawer for ActionSequence. Extends ActionDrawer<TAction> to render the sequence's child action list and action variables as two distinct sections within the foldable body. Disables the progress indicator since sequences manage multiple child actions.

Definition

Namespace: Paragon.Core.ActionSystem.Editor Assembly: Paragon.Editor.dll

[DrawerPriority(0.0, 0.0, 3005.0)]
public class ActionSequenceDrawer<TActionSequence> : ActionDrawer<TActionSequence>
    where TActionSequence : ActionSequence

Inherits: ActionDrawer<TActionSequence> Type Constraint: TActionSequence : ActionSequence

Remarks

This drawer demonstrates the standard pattern for extending ActionDrawer to handle a specialized Action subclass:

1. Higher priority (3005 vs 3000) so Odin picks this drawer for ActionSequence fields instead of the base ActionDrawer.

2. Overrides Initialize() to disable the progress indicator (sequences don't show a single progress bar — each child action has its own).

3. Overrides DrawBody() to render two child properties:

   • actionSequence — the List<Action> displayed as an Odin list with the label "Sequence"

   • actionVariables — the sequence's own variables, displayed below

The header (foldout + polymorphic selector) is inherited unchanged from ActionDrawer.

Quick Lookup

Goal	How
Change the default label	Override defaultLabel property
Add controls to the body	Override DrawBody(), call base.DrawBody() or reimplement
Show progress indicator	Set showProgressIndicator = true in Initialize() (disabled by default for sequences)

Properties

defaultLabel

The default label for ActionSequence fields. Overrides the base "Action" label.

protected override GUIContent defaultLabel { get; } // = "Action Sequence"

Methods

Initialize

One-time setup called by Odin. Disables the progress indicator for sequence drawers.

protected override void Initialize()

Behavior:

• Calls base.Initialize()

• Sets showProgressIndicator = false

DrawBody

Renders the sequence list and action variables as two stacked sections inside the foldable body.

protected override void DrawBody()

Layout Structure:

┌─ FadeGroup (controlled by isExpanded) ─────┐
│  ┌─ Horizontal Toolbar ─────────────────┐  │
│  │  [9px indent] [Sequence list]        │  │
│  └──────────────────────────────────────┘  │
│  [-1px spacing]                            │
│  ┌─ Horizontal Toolbar ─────────────────┐  │
│  │  [9px indent] [Action Variables]     │  │
│  └──────────────────────────────────────┘  │
└────────────────────────────────────────────┘

Behavior:

• Wraps content in SirenixEditorGUI.BeginFadeGroup / EndFadeGroup controlled by isExpanded

• Temporarily resets SirenixGUIStyles.PropertyMargin margins to RectOffset(0,0,0,0) for the sequence list, then restores to RectOffset(3,3,2,2)

• Draws the actionSequence child property with label "Sequence"

• Draws the actionVariables child property below with default label

Extension Points

Optional Overrides

Method / Property	Purpose
defaultLabel	Change the foldout label
Initialize()	Additional one-time setup (call base.Initialize() first)
DrawBody()	Customize the body layout
DrawHeader(GUIContent)	Inherited from ActionDrawer — customize the header

Implementation Requirements

When subclassing ActionSequenceDrawer, you MUST:

1. Use a DrawerPriority higher than 3005

2. Constrain the type parameter to your custom ActionSequence subclass

You SHOULD:

• Call base.Initialize() in Initialize() overrides

• Maintain the two-section body pattern (sequence list + variables) for consistency

Common Pitfalls

PropertyMargin side effect DrawBody() modifies SirenixGUIStyles.PropertyMargin.margin and restores it afterward. If you override DrawBody() and skip the base implementation, ensure you handle margins correctly to avoid layout issues in surrounding drawers.

Priority between 3000 and 3005 A custom drawer with priority in the range (3000, 3005) will override ActionDrawer but not ActionSequenceDrawer. If your custom Action is not an ActionSequence, this is fine. If it is an ActionSequence subclass, use a priority above 3005.

Examples

Custom Drawer for a Specialized Sequence

using UnityEngine;
using Sirenix.OdinInspector.Editor;
using Paragon.Core.ActionSystem.Editor;
using Paragon.Editor;

[DrawerPriority(0.0, 0.0, 3010.0)]
[JetBrains.Annotations.UsedImplicitly]
public class QuestSequenceDrawer<T> : ActionSequenceDrawer<T>
    where T : QuestActionSequence
{
    protected override GUIContent defaultLabel { get; } = new GUIContent("Quest Sequence");

    protected override void DrawBody()
    {
        base.DrawBody();

        // Add quest-specific info below the sequence
        if (SirenixEditorGUI.BeginFadeGroup(this, isExpanded))
        {
            using (DrawGUI.HorizontalToolbar())
            {
                DrawGUI.Space(9);
                Property.Children["questId"].Draw();
            }
        }
        SirenixEditorGUI.EndFadeGroup();
    }
}

See Also

• ActionSequence — runtime class this drawer renders

• ActionDrawer — base drawer this inherits from

• Action System Editor — editor tooling overview