UnityHeapExplorer/Editor/Scripts/RootPathView/RootPathView.cs at master · UnitySRP/UnityHeapExplorer · GitHub

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//
// Heap Explorer for Unity. Copyright (c) 2019-2020 Peter Schraut (www.console-dev.de). See LICENSE.md
// https://github.com/pschraut/UnityHeapExplorer/
//
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor.IMGUI.Controls;
using UnityEditor;

namespace HeapExplorer
{
    public class RootPathView : HeapExplorerView
    {
        RootPath m_Selected;
        RootPathControl m_RootPathControl;
        RootPathUtility m_RootPaths = new RootPathUtility();

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

            m_RootPathControl = new RootPathControl(window, GetPrefsKey(() => m_RootPathControl), new TreeViewState());
            m_RootPathControl.onSelectionChange += OnSelectionChange;
        }

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

            m_RootPathControl.SaveLayout();
        }

        public override void OnGUI()
        {
            base.OnGUI();

            using (new EditorGUI.DisabledGroupScope(m_RootPaths.isBusy))
            {
                using (new EditorGUILayout.VerticalScope())
                {
                    using (new EditorGUILayout.HorizontalScope())
                    {
                        EditorGUILayout.LabelField(string.Format("{0} Path(s) to Root", m_RootPaths.count), EditorStyles.boldLabel);
                    }

                    GUILayout.Space(2);
                    m_RootPathControl.OnGUI();

                    GUILayout.Space(2);
                    var reason = "No root object selected.";
                    if (m_Selected != null)
                        reason = m_Selected.reasonString;
                    EditorGUI.HelpBox(GUILayoutUtility.GetRect(10, 48, GUILayout.ExpandWidth(true)), reason, MessageType.Info);
                }
            }

            if (m_RootPaths.isBusy)
            {
                var r = GUILayoutUtility.GetLastRect();
                r.x = r.center.x - 100;
                r.width = 200;
                r.y = r.center.y - 70;
                r.height = 50;
                GUI.Label(r, string.Format("Finding root paths, please wait.\n{0} objects scanned", m_RootPaths.scanned), HeEditorStyles.centeredWordWrapLabel);

                r = GUILayoutUtility.GetLastRect();
                r.x = r.center.x - 60;
                r.width = 120;
                r.y = r.center.y - 20;
                r.height = 24;

                if (GUI.Button(r, "Cancel"))
                {
                    m_RootPaths.Abort();
                }
            }
        }

        public void Inspect(PackedNativeUnityEngineObject item)
        {
            m_Selected = null;
            ScheduleJob(new ObjectProxy(snapshot, item));
        }

        public void Inspect(PackedManagedObject item)
        {
            m_Selected = null;
            ScheduleJob(new ObjectProxy(snapshot, item));
        }

        public void Inspect(PackedManagedStaticField item)
        {
            m_Selected = null;
            ScheduleJob(new ObjectProxy(snapshot, item));
        }

        public void Inspect(PackedGCHandle item)
        {
            m_Selected = null;
            ScheduleJob(new ObjectProxy(snapshot, item));
        }

        public void Clear()
        {
            m_RootPathControl.SetTree(null);
            m_Selected = null;
            m_RootPaths.Abort();
            m_RootPaths = new RootPathUtility();
            ScheduleJob(new RootPathJob() { control = m_RootPathControl });
        }

        void ScheduleJob(ObjectProxy objectProxy)
        {
            Clear();

            var job = new RootPathJob
            {
                snapshot = snapshot,
                objectProxy = objectProxy,
                control = m_RootPathControl,
                paths = m_RootPaths
            };

            ScheduleJob(job);
        }

        void OnSelectionChange(RootPath path)
        {
            m_Selected = path;
        }

        class RootPathJob : AbstractThreadJob
        {
            public ObjectProxy objectProxy;
            public RootPathControl control;
            public PackedMemorySnapshot snapshot;

            // in/out
            public RootPathUtility paths;

            // Output
            public TreeViewItem tree;

            public override void ThreadFunc()
            {
                if (objectProxy != null)
                    paths.Find(objectProxy);

                tree = control.BuildTree(snapshot, paths);
            }

            public override void IntegrateFunc()
            {
                control.SetTree(tree);
            }
        }
    }
}