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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 UnityEngine;
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using UnityEngine.TestTools;
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namespace BracerLib.Editor.Utility
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{
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/// <summary>
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/// A set-up for a component that can be a searchable list. Deprecated but fun to create.
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/// Doesn't work for entry adds.
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/// </summary>
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/// <typeparam name="T"></typeparam>
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[ExcludeFromCoverage]
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[Obsolete]
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public class SearchableScrollView<T>
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{
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public delegate void DataDelegate(int index, string originalValue, string newValue);
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public delegate bool ValidationDelegate(string entry);
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private static class Styles
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{
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public static readonly GUIStyle SELECTED;
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static Styles()
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{
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var t = new Texture2D(1, 1);
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t.SetPixel(0, 0, new Color(0.4f, 0.4f, 0.4f));
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t.Apply();
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SELECTED = new GUIStyle(EditorStyles.label);
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SELECTED.normal.textColor = Color.white;
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SELECTED.normal.background = t;
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}
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}
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private static readonly string EDIT_FIELD = "selectedTextField";
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private readonly EditorSearchField searchField;
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private IList<T> data;
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private IList<string> dataLabels = new List<string>();
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private IList<string> searchResults;
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private readonly IDictionary<int, int> filteredLabelsToData = new Dictionary<int, int>();
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private EventType prevEventType;
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private int selectedIndex = -1;
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private bool isEditing;
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private bool isNewEntry;
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private bool cancelEdit;
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private bool editingFinished;
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private string originalEntryText;
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private string editedEntryText;
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private Vector2 scrollPosition;
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public float MaxWidth { get; set; }
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public IList<T> Data
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{
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set
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{
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if (value == null)
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return;
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data = value;
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searchField.SearchString = string.Empty;
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dataLabels.Clear();
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dataLabels = data.Select(d => d.ToString()).ToList();
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filteredLabelsToData.Clear();
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}
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}
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/// <summary>
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/// The modified index of the selection in the list with the search results taken into account.
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/// </summary>
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public int SelectedIndex => filteredLabelsToData.ContainsKey(selectedIndex) ? filteredLabelsToData[selectedIndex] : selectedIndex;
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public ValidationDelegate ValidateEntry { get; set; }
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public DataDelegate DataEntryAdded { get; set; }
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public DataDelegate DataEntryEdited { get; set; }
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public DataDelegate DataEntryRemoved { get; set; }
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private IList<string> TargetData => (searchResults?.Count ?? 0) > 0 ? searchResults : dataLabels;
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public SearchableScrollView()
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{
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searchField = new EditorSearchField();
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searchField.OnInputChanged += SearchFieldInputChanged;
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}
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public void OnGUI()
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{
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HandleEditing();
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GUILayout.BeginVertical();
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GUILayout.BeginVertical(EditorStyles.helpBox);
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searchField.OnGUI();
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scrollPosition = GUILayout.BeginScrollView(scrollPosition, false, true, GUILayout.MaxWidth(MaxWidth));
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GUILayout.BeginVertical();
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// Output all keys in the list, with some being modified in style or interact-ability by way of flags
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var newEntryIndex = -1;
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var targetData = TargetData;
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for (var i = 0; i < (targetData?.Count ?? 0); i++)
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{
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var target = targetData![i];
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var selected = selectedIndex == i;
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if (isEditing && selected)
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{
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if (originalEntryText == null)
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{
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originalEntryText = target;
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editedEntryText = target;
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}
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GUI.SetNextControlName(EDIT_FIELD);
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editedEntryText = GUILayout.TextField(editedEntryText, Styles.SELECTED);
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GUI.FocusControl(EDIT_FIELD);
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}
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else if (cancelEdit && selected)
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{
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cancelEdit = false;
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if (isNewEntry)
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newEntryIndex = i;
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else
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targetData[i] = originalEntryText;
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originalEntryText = null;
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editedEntryText = null;
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}
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else if (editingFinished && selected)
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{
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editingFinished = false;
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UpdateListValue(i, originalEntryText, editedEntryText);
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originalEntryText = null;
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editedEntryText = null;
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}
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else if (GUILayout.Button(target, selected ? Styles.SELECTED : EditorStyles.label) && !isEditing)
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selectedIndex = selected ? -1 : i;
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}
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GUILayout.FlexibleSpace();
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GUILayout.EndVertical();
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GUILayout.EndScrollView();
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GUILayout.EndVertical();
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GUILayout.Label("F2 = Edit entry\nEnter = Accept and apply changes\nEscape = Cancel entry edit", EditorStyles.helpBox);
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GUILayout.EndVertical();
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}
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public void AddNewEntry()
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{
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searchField.SearchString = string.Empty;
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dataLabels.Add(string.Empty);
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selectedIndex = dataLabels.Count - 1;
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isEditing = true;
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isNewEntry = true;
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}
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public void DeleteEntry()
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{
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if (selectedIndex < 0)
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return;
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dataLabels.RemoveAt(SelectedIndex);
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DataEntryRemoved?.Invoke(SelectedIndex, null, null);
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searchField.SearchString = string.Empty;
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}
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private void FinalizeNewEntry()
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{
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if (!isEditing)
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return;
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isEditing = false;
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editingFinished = true;
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}
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private void HandleEditing()
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{
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var eventType = Event.current.type;
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var isKeyDown = eventType == EventType.KeyDown;
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if (selectedIndex < 0 || !isKeyDown || eventType == prevEventType)
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{
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if (!isKeyDown)
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prevEventType = eventType;
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return;
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}
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prevEventType = eventType;
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var keyCode = Event.current.keyCode;
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switch (keyCode)
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{
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case KeyCode.Escape:
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if (!isEditing)
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return;
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isEditing = false;
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cancelEdit = true;
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break;
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case KeyCode.Return:
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case KeyCode.KeypadEnter:
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FinalizeNewEntry();
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break;
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case KeyCode.F2:
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isEditing = true;
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break;
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}
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}
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private void UpdateListValue(int index, string origText, string editedText)
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{
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if (editedText == origText || (ValidateEntry != null && !ValidateEntry(editedText)))
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{
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if (isNewEntry)
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{
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isNewEntry = false;
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dataLabels.RemoveAt(dataLabels.Count - 1);
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}
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return;
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}
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if (filteredLabelsToData.TryGetValue(index, out var origIndex))
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{
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searchResults[index] = editedText;
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dataLabels[origIndex] = editedText;
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index = origIndex;
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}
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else
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dataLabels[index] = editedText;
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if (isNewEntry)
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{
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isNewEntry = false;
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DataEntryAdded?.Invoke(index, null, editedText);
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}
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else
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DataEntryEdited?.Invoke(index, origText, editedText);
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}
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private void SearchFieldInputChanged(string searchString)
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{
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searchResults ??= new List<string>();
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searchResults.Clear();
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filteredLabelsToData.Clear();
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if (searchString != null)
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{
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var newIndex = 0;
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searchResults = dataLabels.Where((label, index) =>
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{
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var result = label.IndexOf(searchString, StringComparison.OrdinalIgnoreCase) >= 0;
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if (result)
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filteredLabelsToData.Add(newIndex++, index);
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return result;
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}).ToList();
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}
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else
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searchResults = dataLabels;
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if (selectedIndex >= searchResults.Count)
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selectedIndex = -1;
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}
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}
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}
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