private static float DrawAddRemoveButtons(Rect position, SerializedProperty property, SerializedProperty collection)
{
var state = ListStates[CollectionDisplay.GetFullPath(collection)];
Rect addButtonPosition = position;
addButtonPosition.height = 20;
addButtonPosition.xMax -= 3;
addButtonPosition.xMin = addButtonPosition.xMax - 20;
if (UnityEngine.GUI.Button(addButtonPosition, "+", addRemButtonStyle))
{
state.List.List.onAddCallback.Invoke(state.List.List);
state.ElementsDisabled = false;
}
Rect remButtonPosition = addButtonPosition;
remButtonPosition.x -= 20;
if (collection.arraySize > 0 && state.List.List.index > -1)
{
if (UnityEngine.GUI.Button(remButtonPosition, "-", addRemButtonStyle))
{
state.List.List.onRemoveCallback.Invoke(state.List.List);
}
}
return(0);
}
private float DrawSettingsButton(Rect position, SerializedProperty property, SerializedProperty collection)
{
var state = ListStates[CollectionDisplay.GetFullPath(collection)];
Rect settingsPosition = position;
settingsPosition.xMin = (settingsPosition.xMax - 20) + 7;
settingsPosition.xMax += 7;
settingsPosition.y += 4;
settingsPosition.height = 20;
GUIContent iconContent = EditorGUIUtility.IconContent("_Popup");
GUIStyle buttonStyle = centeredLabelStyle;
Color guiColor = UnityEngine.GUI.color;
if (state.EditingSettings)
{
UnityEngine.GUI.color = Color.Lerp(guiColor, Color.yellow, .3f);
buttonStyle = activeSettingsBackground;
buttonStyle.fixedHeight = settingsPosition.height - 4;
buttonStyle.fixedWidth = settingsPosition.width - 4;
}
if (UnityEngine.GUI.Button(settingsPosition, iconContent.image, buttonStyle))
{
state.EditingSettings = !state.EditingSettings;
}
UnityEngine.GUI.color = guiColor;
return(0);
}
private static float DrawFooterBackground(Rect position, SerializedProperty property, SerializedProperty collection)
{
var listState = ListStates[CollectionDisplay.GetFullPath(collection)];
position.yMin -= 2;
DrawAreaBackground(position, footerBackgroundStyle, listState.LastFooterHeight);
return(0);
}
public static Vector2Int GetPageDisplayRange(SerializedProperty collection)
{
DisplayState state = ListStates[CollectionDisplay.GetFullPath(collection)];
int pageSize = GetItemsPerPage(state.Collection);
int pageStartIndex = (state.CurrentPageSet * state.PageSetSize) + (state.CurrentPage * pageSize);
int pageEndIndex = pageStartIndex + pageSize;
return(new Vector2Int(pageStartIndex, pageEndIndex));
}
private static float DrawHeaderBackground(Rect position, SerializedProperty property, SerializedProperty collection)
{
var listState = ListStates[CollectionDisplay.GetFullPath(collection)];
Rect bgPosition = position;
bgPosition.xMin -= 6;
bgPosition.xMax += 6;
DrawAreaBackground(bgPosition, headerBackgroundStyle, listState.LastHeaderHeight + 2);
return(0);
}
public CollectionDrawer()
{
Type currentType = GetType();
while (currentType != null)
{
foreach (var attribute in GetType().GetCustomAttributes())
{
if (attribute is DisplayType)
{
DisplayType cast = attribute as DisplayType;
CollectionDisplay handler = (CollectionDisplay)Activator.CreateInstance(cast.Type);
if (!DisplayHandlers.ContainsKey(GetType()))
{
DisplayHandlers.Add(GetType(), handler);
}
break;
}
}
currentType = currentType.BaseType;
}
}
private float DrawAddArea(Rect position, SerializedProperty property, SerializedProperty collection)
{
DisplayState state = ListStates[CollectionDisplay.GetFullPath(collection)];
if (!state.AddingElement || !collection.isExpanded)
{
return(0);
}
ReorderableList list = state.List.List;
Rect startPosition = position;
Rect labelPosition = position;
labelPosition.height = EditorGUIUtility.singleLineHeight;
UnityEngine.GUI.Label(labelPosition, new GUIContent("Add Element"), centeredLabelStyle);
position.y += labelPosition.height;
position.xMin += 20;
position.xMax -= 20;
if (DrawAddElement != null)
{
position.y += DrawAddElement(position, property, collection);
}
Rect addButtonPosition = position;
addButtonPosition.xMax -= position.width * .55f;
addButtonPosition.height = EditorGUIUtility.singleLineHeight;
if (UnityEngine.GUI.Button(addButtonPosition, "Add"))
{
bool successful = true;
try
{
SerializationReflection.CallPrivateMethod(property, "AddTemp");
}
catch (Exception e)
{
successful = false;
EditorUtility.DisplayDialog("Cannot Add to Collection", e.InnerException.Message, "Okay");
}
if (successful)
{
EndAddMode(state);
}
}
Rect cancelButtonPosition = position;
cancelButtonPosition.xMin += position.width * .55f;
cancelButtonPosition.height = EditorGUIUtility.singleLineHeight;
if (UnityEngine.GUI.Button(cancelButtonPosition, "Cancel"))
{
SerializationReflection.CallPrivateMethod(property, "ClearTemp");
EndAddMode(state);
state.LastAddingHeight = 0;
return(0);
}
position.y += addButtonPosition.height;
position.y += 5;
state.LastAddingHeight = position.y - startPosition.y;
return(state.LastAddingHeight);
}
public ReorderableCollection(SerializedProperty property, SerializedProperty collection)
{
bool allowDrag = true;
object pathReference = SerializationReflection.GetPathReference(property);
if (pathReference != null)
{
Type sortedType = SerializationReflection.GetPathReference(property).GetType();
while (sortedType != null)
{
if (sortedType.GetInterface("SortedCollection`1") != null)
{
allowDrag = false;
break;
}
sortedType = sortedType.BaseType;
}
}
string collectionPath = CollectionDisplay.GetFullPath(collection);
DisplayState listState;
if (ListStates.ContainsKey(collectionPath))
{
ListStates.Remove(collectionPath);
}
listState = new DisplayState();
ListStates.Add(collectionPath, listState);
listState.Collection = collection;
listState.List = this;
DrawerState drawerState = CollectionDisplay.GetDrawerState(property);
var newList = new ReorderableList(collection.serializedObject, collection)
{
draggable = allowDrag,
};
newList.showDefaultBackground = false;
newList.onReorderCallbackWithDetails = (ReorderableList list, int oldIndex, int newIndex) =>
{
Reorder?.Invoke(drawerState.Property, listState.Collection, oldIndex, newIndex);
};
newList.drawHeaderCallback = (Rect position) =>
{
SerializedProperty hasLostValue = drawerState.Property.FindPropertyRelative("hasLostValue");
if (hasLostValue != null && hasLostValue.boolValue == true)
{
EditorUtility.DisplayDialog("Collection Error", "You've attempted to change an element in a way that prevents it from being added to the collection. The element will be moved to the Add Element area of the list so you can change the element and add it back in.", "Okay");
ListStates[CollectionDisplay.GetFullPath(listState.Collection)].AddingElement = true;
hasLostValue.boolValue = false;
}
Rect startPosition = position;
DrawHeaderBackground(position, drawerState.Property, listState.Collection);
DrawSettingsButton(position, drawerState.Property, listState.Collection);
position.y += DrawSettings(position, drawerState.Property, listState.Collection);
for (var i = 0; i < DrawHeaderAreaHandlers.Count; i++)
{
position.y += DrawHeaderAreaHandlers[i].Invoke(position, drawerState.Property, listState.Collection);
}
listState.LastHeaderHeight = position.y - startPosition.y;
newList.headerHeight = listState.LastHeaderHeight;
};
newList.drawElementCallback += (Rect position, int index, bool isActive, bool isFocused) =>
{
position.y += 2;
var pageRange = GetPageDisplayRange(listState.Collection);
if (index >= pageRange.x && index < pageRange.y)
{
EditorGUI.BeginDisabledGroup(listState.AddingElement);
DrawElement?.Invoke(position, index, drawerState.Property, listState.Collection);
EditorGUI.EndDisabledGroup();
}
};
newList.drawElementBackgroundCallback = (Rect position, int index, bool isActive, bool isFocused) =>
{
if (Mathf.Approximately(position.height, 0))
{
return;
}
Rect backgroundPos = position;
backgroundPos.yMin -= 2;
backgroundPos.yMax += 2;
boxBackground.fixedHeight = backgroundPos.height;
boxBackground.fixedWidth = backgroundPos.width;
Color guiColor = UnityEngine.GUI.color;
if (isActive)
{
UnityEngine.GUI.color = UnityEngine.GUI.skin.settings.selectionColor;
}
if (index % 2 == 0)
{
UnityEngine.GUI.color = Color.Lerp(UnityEngine.GUI.color, Color.black, .1f);
}
if (Event.current.type == EventType.Repaint)
{
boxBackground.Draw(position, false, isActive, true, false);
}
UnityEngine.GUI.color = guiColor;
position.xMin += 2;
position.xMax -= 3;
};
newList.elementHeightCallback += (int index) =>
{
int pageSize = GetItemsPerPage(listState.Collection);
int pageStartIndex = (listState.CurrentPageSet * listState.PageSetSize * pageSize) + (listState.CurrentPage * pageSize);
int pageEndIndex = pageStartIndex + pageSize;
if (index >= pageStartIndex && index < pageEndIndex && (GetElementHeight != null))
{
return(GetElementHeight(index, drawerState.Property, listState.Collection) + 2);
}
return(0);
};
newList.drawFooterCallback = (Rect position) =>
{
DrawFooterBackground(position, drawerState.Property, listState.Collection);
DrawAddRemoveButtons(position, drawerState.Property, listState.Collection);
Rect startPosition = position;
for (var i = 0; i < DrawFooterAreaHandlers.Count; i++)
{
position.y += DrawFooterAreaHandlers[i].Invoke(position, drawerState.Property, listState.Collection);
}
position.y += DrawPageSelection(position, drawerState.Property, listState.Collection);
if (listState.List.DrawCustomAdd)
{
position.y += DrawAddArea(position, property, collection);
}
listState.LastFooterHeight = position.y - startPosition.y;
listState.LastFooterHeight += 4;
List.footerHeight = listState.LastFooterHeight;
};
newList.onRemoveCallback += (ReorderableList targetList) =>
{
if (targetList.index > -1)
{
int pageSize = GetItemsPerPage(listState.Collection);
int pageStartIndex = GetPageDisplayRange(listState.Collection).x;
listState.Collection.DeleteArrayElementAtIndex(pageStartIndex + targetList.index);
}
};
newList.onAddCallback += (ReorderableList targetList) =>
{
if (DrawCustomAdd)
{
ListStates[collectionPath].AddingElement = !ListStates[collectionPath].AddingElement;
if (ListStates[collectionPath].AddingElement)
{
SerializationReflection.CallPrivateMethod(property, "ClearTemp");
}
}
else
{
listState.Collection.InsertArrayElementAtIndex(listState.Collection.arraySize);
}
};
List = newList;
}
private static float DrawPageSelection(Rect position, SerializedProperty property, SerializedProperty collection)
{
Rect startPosition = position;
var state = ListStates[CollectionDisplay.GetFullPath(collection)];
int currentPage = state.CurrentPage;
int pageSize = GetItemsPerPage(collection);
int pages = Mathf.CeilToInt(collection.arraySize / (float)pageSize);
Rect pagePosition = position;
pagePosition.height = EditorGUIUtility.singleLineHeight + 5;
pagePosition.xMax = pagePosition.xMin + 20;
float availableWidth = position.width - 100;
int maxPossiblePageButtons = Mathf.RoundToInt(Mathf.Abs(Mathf.Ceil(availableWidth / pagePosition.width))) - 2;
int pageSets = Mathf.CeilToInt(pages / (float)maxPossiblePageButtons);
int startPage = state.CurrentPage;
int startPageSet = state.CurrentPageSet;
if ((state.CurrentPageSet * maxPossiblePageButtons) >= pages)
{
state.CurrentPageSet = 0;
}
int pageMin = (state.CurrentPageSet * maxPossiblePageButtons);
int pageMax = pageMin + maxPossiblePageButtons;
if (pageMax >= pages)
{
pageMax = pages;
}
if (Event.current.type == EventType.Repaint)
{
state.PageSetSize = maxPossiblePageButtons;
if (state.CurrentPage >= (pageMax - pageMin))
{
state.CurrentPage = 0;
}
if (state.CurrentPage < 0)
{
state.CurrentPage = (pageMax - pageMin) - 1;
}
}
if (pages > 1)
{
if (state.CurrentPageSet > 0)
{
EditorGUIUtility.AddCursorRect(pagePosition, MouseCursor.Link);
if (UnityEngine.GUI.Button(pagePosition, EditorGUIUtility.TrIconContent("Animation.FirstKey"), linkStyle))
{
EditorGUIUtility.AddCursorRect(pagePosition, MouseCursor.Link);
state.CurrentPageSet--;
}
}
pagePosition.x += pagePosition.width;
if (currentPage + state.CurrentPageSet > 0)
{
EditorGUIUtility.AddCursorRect(pagePosition, MouseCursor.Link);
if (UnityEngine.GUI.Button(pagePosition, EditorGUIUtility.TrIconContent("Animation.PrevKey", "Previous page"), linkStyle))
{
EditorGUIUtility.AddCursorRect(pagePosition, MouseCursor.Link);
state.CurrentPage--;
if (state.CurrentPage < 0)
{
state.CurrentPageSet--;
state.CurrentPage = maxPossiblePageButtons - 1;
}
}
}
pagePosition.x += pagePosition.width;
for (var i = pageMin; i < pageMax; i++)
{
GUIContent label = new GUIContent((i + 1).ToString());
if (i != state.CurrentPage + pageMin)
{
EditorGUIUtility.AddCursorRect(pagePosition, MouseCursor.Link);
if (UnityEngine.GUI.Button(pagePosition, label, linkStyle))
{
state.CurrentPage = i - pageMin;
}
}
else
{
UnityEngine.GUI.Label(pagePosition, label, EditorStyles.boldLabel);
Rect underlinePos = pagePosition;
EditorStyles.boldLabel.CalcMinMaxWidth(label, out _, out float maxWidth);
underlinePos.width = maxWidth;
underlinePos.yMax -= 3;
underlinePos.yMin = underlinePos.yMax - 2;
EditorGUI.DrawRect(underlinePos, EditorStyles.boldLabel.normal.textColor);
}
pagePosition.x += pagePosition.width;
}
if (currentPage + pageMin < (pages - 1))
{
EditorGUIUtility.AddCursorRect(pagePosition, MouseCursor.Link);
if (UnityEngine.GUI.Button(pagePosition, EditorGUIUtility.TrIconContent("Animation.NextKey", "Next Page."), linkStyle))
{
state.CurrentPage++;
if (state.CurrentPage + (state.CurrentPageSet * maxPossiblePageButtons) >= pageMax)
{
state.CurrentPageSet++;
state.CurrentPage = 0;
}
}
pagePosition.x += pagePosition.width;
}
if (state.CurrentPageSet < pageSets - 1)
{
EditorGUIUtility.AddCursorRect(pagePosition, MouseCursor.Link);
if (UnityEngine.GUI.Button(pagePosition, EditorGUIUtility.TrIconContent("Animation.LastKey"), linkStyle))
{
EditorGUIUtility.AddCursorRect(pagePosition, MouseCursor.Link);
state.CurrentPageSet++;
}
}
}
if (state.CurrentPage != startPage || state.CurrentPageSet != startPageSet)
{
EditorGUIUtility.editingTextField = false;
state.List.List.index = -1;
}
position.y += pagePosition.height;
return(position.y - startPosition.y);
}
private static float DrawSettings(Rect position, SerializedProperty property, SerializedProperty collection)
{
var listState = ListStates[CollectionDisplay.GetFullPath(collection)];
if (!listState.EditingSettings)
{
return(0);
}
Rect startPosition = position;
position.xMin -= 6;
position.xMax += 6;
PackageSettings.ViewSettings settings = PackageSettings.Settings.GetListSettings(collection);
PackageSettings.ViewSettings defaultSettings = PackageSettings.Settings.DefaultListSettings;
int pageSize = (settings == null) ? defaultSettings.ItemsPerPage : settings.ItemsPerPage;
position.xMin += 7;
position.xMax -= 7;
position.y += 4;
position.height = EditorStyles.boldLabel.CalcHeight(new GUIContent("List Settings"), position.width);
UnityEngine.GUI.Label(position, new GUIContent("List Settings"), EditorStyles.boldLabel);
position.y += position.height;
bool usePages = (settings == null) ? defaultSettings.UsePages : settings.UsePages;
bool newUsePages = EditorGUI.Toggle(position, "Use Page System", usePages);
position.y += position.height;
if (usePages != newUsePages)
{
if (settings == null)
{
settings = PackageSettings.Settings.AddNewSettings(collection);
}
settings.UsePages = newUsePages;
listState.CurrentPage = 0;
EditorUtility.SetDirty(PackageSettings.Settings);
}
float fieldHeight = EditorStyles.textField.fixedHeight;
position.height = EditorGUIUtility.singleLineHeight;
EditorStyles.textField.fixedHeight = position.height;
if (newUsePages)
{
int newPageSize = EditorGUI.DelayedIntField(position, "Items Per Page", pageSize);
if (newPageSize < 1)
{
newPageSize = Mathf.Clamp(newPageSize, 1, 100);
}
if (newPageSize != pageSize)
{
if (settings == null)
{
settings = PackageSettings.Settings.AddNewSettings(collection);
}
settings.ItemsPerPage = newPageSize;
listState.CurrentPage = 0;
EditorUtility.SetDirty(PackageSettings.Settings);
}
position.y += position.height + 4;
}
Color settingsColor = (settings == null) ? defaultSettings.Color : settings.Color;
Color newColor = EditorGUI.ColorField(position, "List Color", settingsColor);
if (newColor != settingsColor)
{
if (settings == null)
{
settings = PackageSettings.Settings.AddNewSettings(collection);
}
settings.Color = newColor;
EditorUtility.SetDirty(PackageSettings.Settings);
}
position.y += position.height + 4;
EditorStyles.textField.fixedHeight = fieldHeight;
position.height = 2;
UnityEngine.GUI.DrawTexture(position, dividerTexture);
position.y += position.height + 2;
return(position.y - startPosition.y);
}