private AdvancedDropdownItemState GetStateForItem(AdvancedDropdownItem item)
{
if (m_LastSelectedState != null && m_LastSelectedState.itemId == item.id)
{
return(m_LastSelectedState);
}
for (int i = 0; i < states.Length; i++)
{
if (states[i].itemId == item.id)
{
m_LastSelectedState = states[i];
return(m_LastSelectedState);
}
}
Array.Resize(ref states, states.Length + 1);
states[states.Length - 1] = new AdvancedDropdownItemState(item);
m_LastSelectedState = states[states.Length - 1];
return(states[states.Length - 1]);
}
void SetSelectionFromState()
{
var selectedIndex = m_State.GetSelectedIndex(m_CurrentlyRenderedTree);
while (selectedIndex >= 0)
{
var child = m_State.GetSelectedChild(m_CurrentlyRenderedTree);
if (child == null)
{
break;
}
selectedIndex = m_State.GetSelectedIndex(child);
if (selectedIndex < 0)
{
break;
}
m_ViewsStack.Push(m_CurrentlyRenderedTree);
m_CurrentlyRenderedTree = child;
}
}
internal void MoveUpSelection(AdvancedDropdownItem item)
{
var state = GetStateForItem(item);
var selectedIndex = state.selectedIndex;
do
{
--selectedIndex;
}while (selectedIndex >= 0 && item.children.ElementAt(selectedIndex).IsSeparator());
if (selectedIndex < 0)
{
selectedIndex = item.children.Count() - 1;
}
if (selectedIndex >= 0)
{
SetSelectionOnItem(item, selectedIndex);
}
}
private void DrawDropdown(float anim, AdvancedDropdownItem group)
{
// Start of animated area (the part that moves left and right)
var areaPosition = new Rect(0, 0, position.width, position.height);
// Adjust to the frame
areaPosition.x += kBorderThickness;
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();
}
protected bool AddMatchItem(AdvancedDropdownItem e, string name, string[] searchWords, List <AdvancedDropdownItem> matchesStart, List <AdvancedDropdownItem> matchesWithin)
{
var didMatchAll = true;
var didMatchStart = false;
// See if we match ALL the seaarch words.
for (var w = 0; w < searchWords.Length; w++)
{
var search = searchWords[w];
if (name.Contains(search))
{
// If the start of the item matches the first search word, make a note of that.
if (w == 0 && name.StartsWith(search))
{
didMatchStart = true;
}
}
else
{
// As soon as any word is not matched, we disregard this item.
didMatchAll = false;
break;
}
}
// We always need to match all search words.
// If we ALSO matched the start, this item gets priority.
if (didMatchAll)
{
if (didMatchStart)
{
matchesStart.Add(e);
}
else
{
matchesWithin.Add(e);
}
}
return(didMatchAll);
}
protected virtual AdvancedDropdownItem Search(string searchString)
{
if (m_SearchableElements == null)
{
BuildSearchableElements();
}
if (string.IsNullOrEmpty(searchString))
{
return(null);
}
// Support multiple search words separated by spaces.
var searchWords = searchString.ToLower().Split(' ');
// We keep two lists. Matches that matches the start of an item always get first priority.
var matchesStart = new List <AdvancedDropdownItem>();
var matchesWithin = new List <AdvancedDropdownItem>();
foreach (var e in m_SearchableElements)
{
var name = e.name.ToLower().Replace(" ", "");
AddMatchItem(e, name, searchWords, matchesStart, matchesWithin);
}
var searchTree = new AdvancedDropdownItem(kSearchHeader);
matchesStart.Sort();
foreach (var element in matchesStart)
{
searchTree.AddChild(element);
}
matchesWithin.Sort();
foreach (var element in matchesWithin)
{
searchTree.AddChild(element);
}
return(searchTree);
}
void SetSelectionFromState()
{
var selectedIndex = m_State.GetSelectedIndex(m_CurrentlyRenderedTree);
while (selectedIndex >= 0)
{
var child = m_State.GetSelectedChild(m_CurrentlyRenderedTree);
if (child == null)
{
break;
}
if (child.id == m_CurrentlyRenderedTree.id)
{
Debug.LogWarning($"Same id: {child.id} given to both {child.displayName} and {m_CurrentlyRenderedTree.displayName}. Selection may be wrong.");
}
selectedIndex = m_State.GetSelectedIndex(child);
if (selectedIndex < 0)
{
break;
}
m_ViewsStack.Push(m_CurrentlyRenderedTree);
m_CurrentlyRenderedTree = child;
}
}
protected override AdvancedDropdownItem FetchData()
{
selectedIDs.Clear();
var rootGroup = new AdvancedDropdownItem("");
for (int i = 0; i < m_DisplayedOptions.Length; i++)
{
var element = new AdvancedDropdownItem(m_DisplayedOptions[i].text)
{
icon = (Texture2D)m_DisplayedOptions[i].image
};
element.elementIndex = i;
rootGroup.AddChild(element);
if (i == m_SelectedIndex)
{
selectedIDs.Add(element.id);
if (m_State != null)
{
m_State.SetSelectedIndex(rootGroup, i);
}
}
}
return(rootGroup);
}
public void RebuildSearch(string search)
{
m_SearchTree = Search(search);
}
public void ReloadData()
{
m_MainTree = FetchData();
}
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);
bool selected = m_State.GetSelectedIndex(item) == i;
if (child.IsSeparator())
{
m_Gui.DrawLineSeparator();
}
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)
{
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))
{
m_State.SetSelectedIndex(item, i);
var selectedChild = m_State.GetSelectedChild(item);
if (selectedChild.children.Any())
{
GoToChild();
}
else
{
if (!selectedChild.IsSeparator() && selectionChanged != null)
{
selectionChanged(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)
{
float 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();
}
}
}
public AdvancedDropdownItemState(AdvancedDropdownItem item)
{
this.itemId = item.id;
}
internal void SetScrollState(AdvancedDropdownItem item, Vector2 scrollState)
{
GetStateForItem(item).scroll = scrollState;
}
internal Vector2 GetScrollState(AdvancedDropdownItem item)
{
return(GetStateForItem(item).scroll);
}
internal void SetSelectedIndex(AdvancedDropdownItem item, int index)
{
GetStateForItem(item).selectedIndex = index;
}
internal int GetSelectedIndex(AdvancedDropdownItem item)
{
return(GetStateForItem(item).selectedIndex);
}
public void AddChild(AdvancedDropdownItem child)
{
m_Children.Add(child);
}
protected virtual void ItemSelected(AdvancedDropdownItem item)
{
}