575 lines
20 KiB
C#
575 lines
20 KiB
C#
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#if UNITY_EDITOR
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using UnityEditor;
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using UnityEditor.Callbacks;
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namespace UnityEngine.InputSystem.Editor
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{
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internal class AdvancedDropdownWindow : EditorWindow
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{
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private static readonly float kBorderThickness = 1f;
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private static readonly float kRightMargin = 13f;
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private AdvancedDropdownGUI m_Gui;
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private AdvancedDropdownDataSource m_DataSource;
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private AdvancedDropdownState m_State;
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private AdvancedDropdownItem m_CurrentlyRenderedTree;
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protected AdvancedDropdownItem renderedTreeItem => m_CurrentlyRenderedTree;
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private AdvancedDropdownItem m_AnimationTree;
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private float m_NewAnimTarget;
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private long m_LastTime;
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private bool m_ScrollToSelected = true;
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private float m_InitialSelectionPosition;
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////FIXME: looks like a bug?
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#pragma warning disable CS0649
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private Rect m_ButtonRectScreenPos;
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private Stack<AdvancedDropdownItem> m_ViewsStack = new Stack<AdvancedDropdownItem>();
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private bool m_DirtyList = true;
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private string m_Search = "";
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private bool hasSearch => !string.IsNullOrEmpty(m_Search);
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protected internal string searchString
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{
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get => m_Search;
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set
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{
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var isNewSearch = string.IsNullOrEmpty(m_Search) && !string.IsNullOrEmpty(value);
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m_Search = value;
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m_DataSource.RebuildSearch(m_Search);
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m_CurrentlyRenderedTree = m_DataSource.mainTree;
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if (hasSearch)
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{
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m_CurrentlyRenderedTree = m_DataSource.searchTree;
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if (isNewSearch || state.GetSelectedIndex(m_CurrentlyRenderedTree) < 0)
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state.SetSelectedIndex(m_CurrentlyRenderedTree, 0);
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m_ViewsStack.Clear();
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}
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}
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}
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internal bool m_ShowHeader = true;
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internal bool showHeader
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{
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get => m_ShowHeader;
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set => m_ShowHeader = value;
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}
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internal bool m_Searchable = true;
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internal bool searchable
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{
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get => m_Searchable;
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set => m_Searchable = value;
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}
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internal bool m_closeOnSelection = true;
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internal bool closeOnSelection
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{
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get => m_closeOnSelection;
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set => m_closeOnSelection = value;
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}
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protected virtual bool isSearchFieldDisabled { get; set; }
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protected bool m_SetInitialSelectionPosition = true;
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public AdvancedDropdownWindow()
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{
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m_InitialSelectionPosition = 0f;
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}
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protected virtual bool setInitialSelectionPosition => m_SetInitialSelectionPosition;
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protected internal AdvancedDropdownState state
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{
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get => m_State;
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set => m_State = value;
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}
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protected internal AdvancedDropdownGUI gui
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{
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get => m_Gui;
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set => m_Gui = value;
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}
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protected internal AdvancedDropdownDataSource dataSource
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{
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get => m_DataSource;
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set => m_DataSource = value;
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}
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public event Action<AdvancedDropdownWindow> windowClosed;
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public event Action windowDestroyed;
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public event Action<AdvancedDropdownItem> selectionChanged;
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protected virtual void OnEnable()
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{
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m_DirtyList = true;
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}
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protected virtual void OnDestroy()
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{
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// This window sets 'editingTextField = true' continuously, through EditorGUI.FocusTextInControl(),
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// for the searchfield in its AdvancedDropdownGUI so here we ensure to clean up. This fixes the issue that
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// EditorGUI.IsEditingTextField() was returning true after e.g the Add Component Menu closes
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EditorGUIUtility.editingTextField = false;
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GUIUtility.keyboardControl = 0;
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windowDestroyed?.Invoke();
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}
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public static T CreateAndInit<T>(Rect rect, AdvancedDropdownState state) where T : AdvancedDropdownWindow
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{
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var instance = CreateInstance<T>();
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instance.m_State = state;
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instance.Init(rect);
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return instance;
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}
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public void Init(Rect buttonRect)
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{
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var screenPoint = GUIUtility.GUIToScreenPoint(new Vector2(buttonRect.x, buttonRect.y));
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m_ButtonRectScreenPos.x = screenPoint.x;
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m_ButtonRectScreenPos.y = screenPoint.y;
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if (m_State == null)
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m_State = new AdvancedDropdownState();
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if (m_DataSource == null)
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m_DataSource = new MultiLevelDataSource();
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if (m_Gui == null)
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m_Gui = new AdvancedDropdownGUI();
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m_Gui.state = m_State;
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m_Gui.Init();
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// Has to be done before calling Show / ShowWithMode
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screenPoint = GUIUtility.GUIToScreenPoint(new Vector2(buttonRect.x, buttonRect.y));
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buttonRect.x = screenPoint.x;
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buttonRect.y = screenPoint.y;
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OnDirtyList();
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m_CurrentlyRenderedTree = hasSearch ? m_DataSource.searchTree : m_DataSource.mainTree;
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ShowAsDropDown(buttonRect, CalculateWindowSize(m_ButtonRectScreenPos, out var requiredDropdownSize));
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// If the dropdown is as height as the screen height, give it some margin
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if (position.height < requiredDropdownSize.y)
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{
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var pos = position;
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pos.y += 5;
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pos.height -= 10;
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position = pos;
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}
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if (setInitialSelectionPosition)
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{
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m_InitialSelectionPosition = m_Gui.GetSelectionHeight(m_DataSource, buttonRect);
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}
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wantsMouseMove = true;
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SetSelectionFromState();
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}
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void SetSelectionFromState()
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{
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var selectedIndex = m_State.GetSelectedIndex(m_CurrentlyRenderedTree);
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while (selectedIndex >= 0)
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{
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var child = m_State.GetSelectedChild(m_CurrentlyRenderedTree);
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if (child == null)
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break;
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selectedIndex = m_State.GetSelectedIndex(child);
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if (selectedIndex < 0)
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break;
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m_ViewsStack.Push(m_CurrentlyRenderedTree);
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m_CurrentlyRenderedTree = child;
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}
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}
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protected virtual Vector2 CalculateWindowSize(Rect buttonRect, out Vector2 requiredDropdownSize)
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{
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requiredDropdownSize = m_Gui.CalculateContentSize(m_DataSource);
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// Add 1 pixel for each border
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requiredDropdownSize.x += kBorderThickness * 2;
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requiredDropdownSize.y += kBorderThickness * 2;
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requiredDropdownSize.x += kRightMargin;
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requiredDropdownSize.y += m_Gui.searchHeight;
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if (showHeader)
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{
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requiredDropdownSize.y += m_Gui.headerHeight;
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}
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requiredDropdownSize.y = Mathf.Clamp(requiredDropdownSize.y, minSize.y, maxSize.y);
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var adjustedButtonRect = buttonRect;
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adjustedButtonRect.y = 0;
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adjustedButtonRect.height = requiredDropdownSize.y;
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// Stretch to the width of the button
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if (requiredDropdownSize.x < buttonRect.width)
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{
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requiredDropdownSize.x = buttonRect.width;
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}
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// Apply minimum size
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if (requiredDropdownSize.x < minSize.x)
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{
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requiredDropdownSize.x = minSize.x;
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}
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if (requiredDropdownSize.y < minSize.y)
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{
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requiredDropdownSize.y = minSize.y;
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}
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return requiredDropdownSize;
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}
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internal void OnGUI()
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{
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m_Gui.BeginDraw(this);
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GUI.Label(new Rect(0, 0, position.width, position.height), GUIContent.none, Styles.background);
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if (m_DirtyList)
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{
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OnDirtyList();
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}
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HandleKeyboard();
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if (searchable)
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OnGUISearch();
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if (m_NewAnimTarget != 0 && Event.current.type == EventType.Layout)
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{
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var now = DateTime.Now.Ticks;
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var deltaTime = (now - m_LastTime) / (float)TimeSpan.TicksPerSecond;
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m_LastTime = now;
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m_NewAnimTarget = Mathf.MoveTowards(m_NewAnimTarget, 0, deltaTime * 4);
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if (m_NewAnimTarget == 0)
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{
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m_AnimationTree = null;
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}
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Repaint();
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}
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var anim = m_NewAnimTarget;
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// Smooth the animation
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anim = Mathf.Floor(anim) + Mathf.SmoothStep(0, 1, Mathf.Repeat(anim, 1));
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if (anim == 0)
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{
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DrawDropdown(0, m_CurrentlyRenderedTree);
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}
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else if (anim < 0)
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{
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// Go to parent
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// m_NewAnimTarget goes -1 -> 0
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DrawDropdown(anim, m_CurrentlyRenderedTree);
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DrawDropdown(anim + 1, m_AnimationTree);
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}
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else // > 0
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{
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// Go to child
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// m_NewAnimTarget 1 -> 0
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DrawDropdown(anim - 1, m_AnimationTree);
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DrawDropdown(anim, m_CurrentlyRenderedTree);
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}
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m_Gui.EndDraw(this);
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}
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public void ReloadData()
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{
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OnDirtyList();
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}
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private void OnDirtyList()
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{
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m_DirtyList = false;
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m_DataSource.ReloadData();
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if (hasSearch)
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{
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m_DataSource.RebuildSearch(searchString);
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if (state.GetSelectedIndex(m_CurrentlyRenderedTree) < 0)
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{
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state.SetSelectedIndex(m_CurrentlyRenderedTree, 0);
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}
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}
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}
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private void OnGUISearch()
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{
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m_Gui.DrawSearchField(isSearchFieldDisabled, m_Search, (newSearch) =>
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{
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searchString = newSearch;
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});
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}
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private void HandleKeyboard()
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{
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var evt = Event.current;
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if (evt.type == EventType.KeyDown)
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{
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// Special handling when in new script panel
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if (SpecialKeyboardHandling(evt))
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{
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return;
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}
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// Always do these
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if (evt.keyCode == KeyCode.DownArrow)
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{
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m_State.MoveDownSelection(m_CurrentlyRenderedTree);
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m_ScrollToSelected = true;
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evt.Use();
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}
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if (evt.keyCode == KeyCode.UpArrow)
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{
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m_State.MoveUpSelection(m_CurrentlyRenderedTree);
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m_ScrollToSelected = true;
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evt.Use();
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}
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if (evt.keyCode == KeyCode.Return || evt.keyCode == KeyCode.KeypadEnter)
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{
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var selected = m_State.GetSelectedChild(m_CurrentlyRenderedTree);
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if (selected != null)
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{
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if (selected.children.Any())
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{
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GoToChild();
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}
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else
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{
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if (selectionChanged != null)
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{
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selectionChanged(m_State.GetSelectedChild(m_CurrentlyRenderedTree));
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}
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if (closeOnSelection)
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{
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CloseWindow();
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}
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}
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}
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evt.Use();
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}
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// Do these if we're not in search mode
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if (!hasSearch)
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{
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if (evt.keyCode == KeyCode.LeftArrow || evt.keyCode == KeyCode.Backspace)
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{
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GoToParent();
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evt.Use();
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}
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if (evt.keyCode == KeyCode.RightArrow)
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{
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var idx = m_State.GetSelectedIndex(m_CurrentlyRenderedTree);
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if (idx > -1 && m_CurrentlyRenderedTree.children.ElementAt(idx).children.Any())
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{
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GoToChild();
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}
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evt.Use();
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}
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if (evt.keyCode == KeyCode.Escape)
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{
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Close();
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evt.Use();
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}
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}
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}
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}
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private void CloseWindow()
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{
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windowClosed?.Invoke(this);
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Close();
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}
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internal AdvancedDropdownItem GetSelectedItem()
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{
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return m_State.GetSelectedChild(m_CurrentlyRenderedTree);
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}
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protected virtual bool SpecialKeyboardHandling(Event evt)
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{
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return false;
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}
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private void DrawDropdown(float anim, AdvancedDropdownItem group)
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{
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// Start of animated area (the part that moves left and right)
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var areaPosition = new Rect(0, 0, position.width, position.height);
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// Adjust to the frame
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areaPosition.x += kBorderThickness;
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areaPosition.y += kBorderThickness;
|
||
|
|
areaPosition.height -= kBorderThickness * 2;
|
||
|
|
areaPosition.width -= kBorderThickness * 2;
|
||
|
|
|
||
|
|
GUILayout.BeginArea(m_Gui.GetAnimRect(areaPosition, anim));
|
||
|
|
// Header
|
||
|
|
if (showHeader)
|
||
|
|
m_Gui.DrawHeader(group, GoToParent, m_ViewsStack.Count > 0);
|
||
|
|
|
||
|
|
DrawList(group);
|
||
|
|
GUILayout.EndArea();
|
||
|
|
}
|
||
|
|
|
||
|
|
private void DrawList(AdvancedDropdownItem item)
|
||
|
|
{
|
||
|
|
// Start of scroll view list
|
||
|
|
m_State.SetScrollState(item, GUILayout.BeginScrollView(m_State.GetScrollState(item), GUIStyle.none, GUI.skin.verticalScrollbar));
|
||
|
|
EditorGUIUtility.SetIconSize(m_Gui.iconSize);
|
||
|
|
Rect selectedRect = new Rect();
|
||
|
|
for (var i = 0; i < item.children.Count(); i++)
|
||
|
|
{
|
||
|
|
var child = item.children.ElementAt(i);
|
||
|
|
var selected = m_State.GetSelectedIndex(item) == i;
|
||
|
|
|
||
|
|
if (child.IsSeparator())
|
||
|
|
{
|
||
|
|
GUIHelpers.DrawLineSeparator(child.name);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
m_Gui.DrawItem(child, child.name, child.icon, child.enabled, child.children.Any(), selected, hasSearch);
|
||
|
|
}
|
||
|
|
|
||
|
|
var r = GUILayoutUtility.GetLastRect();
|
||
|
|
if (selected)
|
||
|
|
selectedRect = r;
|
||
|
|
|
||
|
|
// Skip input handling for the tree used for animation
|
||
|
|
if (item != m_CurrentlyRenderedTree)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
// Select the element the mouse cursor is over.
|
||
|
|
// Only do it on mouse move - keyboard controls are allowed to overwrite this until the next time the mouse moves.
|
||
|
|
if ((Event.current.type == EventType.MouseMove || Event.current.type == EventType.MouseDrag) && child.enabled)
|
||
|
|
{
|
||
|
|
if (!selected && r.Contains(Event.current.mousePosition))
|
||
|
|
{
|
||
|
|
m_State.SetSelectedIndex(item, i);
|
||
|
|
Event.current.Use();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (Event.current.type == EventType.MouseUp && r.Contains(Event.current.mousePosition) && child.enabled)
|
||
|
|
{
|
||
|
|
m_State.SetSelectedIndex(item, i);
|
||
|
|
var selectedChild = m_State.GetSelectedChild(item);
|
||
|
|
if (selectedChild.children.Any())
|
||
|
|
{
|
||
|
|
GoToChild();
|
||
|
|
}
|
||
|
|
else if (!selectedChild.IsSeparator())
|
||
|
|
{
|
||
|
|
selectionChanged?.Invoke(selectedChild);
|
||
|
|
if (closeOnSelection)
|
||
|
|
{
|
||
|
|
CloseWindow();
|
||
|
|
GUIUtility.ExitGUI();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
Event.current.Use();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
EditorGUIUtility.SetIconSize(Vector2.zero);
|
||
|
|
GUILayout.EndScrollView();
|
||
|
|
|
||
|
|
// Scroll to selected on windows creation
|
||
|
|
if (m_ScrollToSelected && m_InitialSelectionPosition != 0)
|
||
|
|
{
|
||
|
|
var diffOfPopupAboveTheButton = m_ButtonRectScreenPos.y - position.y;
|
||
|
|
diffOfPopupAboveTheButton -= m_Gui.searchHeight + m_Gui.headerHeight;
|
||
|
|
m_State.SetScrollState(item, new Vector2(0, m_InitialSelectionPosition - diffOfPopupAboveTheButton));
|
||
|
|
m_ScrollToSelected = false;
|
||
|
|
m_InitialSelectionPosition = 0;
|
||
|
|
}
|
||
|
|
// Scroll to show selected
|
||
|
|
else if (m_ScrollToSelected && Event.current.type == EventType.Repaint)
|
||
|
|
{
|
||
|
|
m_ScrollToSelected = false;
|
||
|
|
Rect scrollRect = GUILayoutUtility.GetLastRect();
|
||
|
|
if (selectedRect.yMax - scrollRect.height > m_State.GetScrollState(item).y)
|
||
|
|
{
|
||
|
|
m_State.SetScrollState(item, new Vector2(0, selectedRect.yMax - scrollRect.height));
|
||
|
|
Repaint();
|
||
|
|
}
|
||
|
|
if (selectedRect.y < m_State.GetScrollState(item).y)
|
||
|
|
{
|
||
|
|
m_State.SetScrollState(item, new Vector2(0, selectedRect.y));
|
||
|
|
Repaint();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
protected void GoToParent()
|
||
|
|
{
|
||
|
|
if (m_ViewsStack.Count == 0)
|
||
|
|
return;
|
||
|
|
m_LastTime = DateTime.Now.Ticks;
|
||
|
|
if (m_NewAnimTarget > 0)
|
||
|
|
m_NewAnimTarget = -1 + m_NewAnimTarget;
|
||
|
|
else
|
||
|
|
m_NewAnimTarget = -1;
|
||
|
|
m_AnimationTree = m_CurrentlyRenderedTree;
|
||
|
|
var parentItem = m_ViewsStack.Pop();
|
||
|
|
|
||
|
|
m_State.ClearSelectionOnItem(m_CurrentlyRenderedTree);
|
||
|
|
|
||
|
|
if (parentItem != null)
|
||
|
|
{
|
||
|
|
var suggestedIndex = parentItem.GetIndexOfChild(m_CurrentlyRenderedTree);
|
||
|
|
m_State.SetSelectionOnItem(parentItem, suggestedIndex);
|
||
|
|
}
|
||
|
|
|
||
|
|
m_CurrentlyRenderedTree = parentItem;
|
||
|
|
}
|
||
|
|
|
||
|
|
private void GoToChild()
|
||
|
|
{
|
||
|
|
m_ViewsStack.Push(m_CurrentlyRenderedTree);
|
||
|
|
m_LastTime = DateTime.Now.Ticks;
|
||
|
|
if (m_NewAnimTarget < 0)
|
||
|
|
m_NewAnimTarget = 1 + m_NewAnimTarget;
|
||
|
|
else
|
||
|
|
m_NewAnimTarget = 1;
|
||
|
|
m_AnimationTree = m_CurrentlyRenderedTree;
|
||
|
|
m_CurrentlyRenderedTree = m_State.GetSelectedChild(m_CurrentlyRenderedTree);
|
||
|
|
}
|
||
|
|
|
||
|
|
[DidReloadScripts]
|
||
|
|
private static void OnScriptReload()
|
||
|
|
{
|
||
|
|
CloseAllOpenWindows<AdvancedDropdownWindow>();
|
||
|
|
}
|
||
|
|
|
||
|
|
protected static void CloseAllOpenWindows<T>()
|
||
|
|
{
|
||
|
|
var windows = Resources.FindObjectsOfTypeAll(typeof(T));
|
||
|
|
foreach (var window in windows)
|
||
|
|
{
|
||
|
|
try
|
||
|
|
{
|
||
|
|
((EditorWindow)window).Close();
|
||
|
|
}
|
||
|
|
catch
|
||
|
|
{
|
||
|
|
DestroyImmediate(window);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private static class Styles
|
||
|
|
{
|
||
|
|
public static readonly GUIStyle background = "grey_border";
|
||
|
|
public static readonly GUIStyle previewHeader = new GUIStyle(EditorStyles.label).WithPadding(new RectOffset(5, 5, 1, 2));
|
||
|
|
public static readonly GUIStyle previewText = new GUIStyle(EditorStyles.wordWrappedLabel).WithPadding(new RectOffset(3, 5, 4, 4));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // UNITY_EDITOR
|