void InitIfNeeded()
        {
            if (m_Initialized)
            {
                return;
            }

            var cpuHierarchyColumns = new[]
            {
                HierarchyFrameDataView.columnName,
                HierarchyFrameDataView.columnTotalPercent,
                HierarchyFrameDataView.columnSelfPercent,
                HierarchyFrameDataView.columnCalls,
                HierarchyFrameDataView.columnGcMemory,
                HierarchyFrameDataView.columnTotalTime,
                HierarchyFrameDataView.columnSelfTime,
                HierarchyFrameDataView.columnWarningCount
            };
            var gpuHierarchyColumns = new[]
            {
                HierarchyFrameDataView.columnName,
                HierarchyFrameDataView.columnTotalGpuPercent,
                HierarchyFrameDataView.columnDrawCalls,
                HierarchyFrameDataView.columnTotalGpuTime
            };
            var profilerColumns   = gpuView ? gpuHierarchyColumns : cpuHierarchyColumns;
            var defaultSortColumn = gpuView ? HierarchyFrameDataView.columnTotalGpuTime : HierarchyFrameDataView.columnTotalTime;

            var columns = CreateColumns(profilerColumns);

            var multiColumnHeaderStateData = SessionState.GetString(multiColumnHeaderStatePrefKey, "");

            if (!string.IsNullOrEmpty(multiColumnHeaderStateData))
            {
                try
                {
                    var restoredHeaderState = JsonUtility.FromJson <MultiColumnHeaderState>(multiColumnHeaderStateData);
                    if (restoredHeaderState != null)
                    {
                        m_MultiColumnHeaderState = restoredHeaderState;
                    }
                }
                catch {} // Nevermind, we'll just fall back to the default
            }
            var headerState = CreateDefaultMultiColumnHeaderState(columns, defaultSortColumn);

            if (MultiColumnHeaderState.CanOverwriteSerializedFields(m_MultiColumnHeaderState, headerState))
            {
                MultiColumnHeaderState.OverwriteSerializedFields(m_MultiColumnHeaderState, headerState);
            }

            var firstInit = m_MultiColumnHeaderState == null;

            m_MultiColumnHeaderState = headerState;

            var multiColumnHeader = new ProfilerFrameDataMultiColumnHeader(m_MultiColumnHeaderState, columns)
            {
                height = 25
            };

            if (firstInit)
            {
                multiColumnHeader.ResizeToFit();
            }

            multiColumnHeader.visibleColumnsChanged += OnMultiColumnHeaderChanged;
            multiColumnHeader.sortingChanged        += OnMultiColumnHeaderChanged;

            // Check if it already exists (deserialized from window layout file or scriptable object)
            if (m_TreeViewState == null)
            {
                m_TreeViewState = new TreeViewState();
            }
            m_TreeView = new ProfilerFrameDataTreeView(m_TreeViewState, multiColumnHeader, cpuModule);
            m_TreeView.selectionChanged += OnMainTreeViewSelectionChanged;
            m_TreeView.searchChanged    += OnMainTreeViewSearchChanged;
            m_TreeView.Reload();

            m_SearchField = new SearchField();
            m_SearchField.downOrUpArrowKeyPressed += m_TreeView.SetFocusAndEnsureSelectedItem;

            if (m_DetailedObjectsView == null)
            {
                m_DetailedObjectsView = new ProfilerDetailedObjectsView(detailedObjectsViewPrefKeyPrefix);
            }
            m_DetailedObjectsView.gpuView         = gpuView;
            m_DetailedObjectsView.frameItemEvent += FrameItem;
            if (m_DetailedCallsView == null)
            {
                m_DetailedCallsView = new ProfilerDetailedCallsView(detailedCallsViewPrefKeyPrefix);
                m_DetailedCallsView.profilerSampleNameProvider = cpuModule;
            }
            m_DetailedCallsView.frameItemEvent += FrameItem;
            if (m_DetailedViewSpliterState == null || !m_DetailedViewSpliterState.IsValid())
            {
                m_DetailedViewSpliterState = SplitterState.FromRelative(new[] { SessionState.GetFloat(splitter0StatePrefKey, 70f), SessionState.GetFloat(splitter1StatePrefKey, 30f) }, new[] { 450f, 50f }, null);
            }
            if (!m_Serialized)
            {
                m_DetailedViewType = (DetailedViewType)SessionState.GetInt(detailedViewTypeStatePrefKey, (int)DetailedViewType.None);
            }

            m_Serialized  = true;
            m_Initialized = true;
        }
 void DrawDetailedViewPopup()
 {
     m_DetailedViewType = (DetailedViewType)EditorGUILayout.IntPopup((int)m_DetailedViewType, kDetailedViewTypeNames, kDetailedViewTypes, BaseStyles.detailedViewTypeToolbarDropDown, GUILayout.Width(BaseStyles.detailedViewTypeToolbarDropDown.fixedWidth));
 }
 void DrawDetailedViewPopup()
 {
     m_DetailedViewType = (DetailedViewType)EditorGUILayout.IntPopup((int)m_DetailedViewType, kDetailedViewTypeNames, kDetailedViewTypes, EditorStyles.toolbarDropDown, GUILayout.Width(120));
 }