129 lines
4.3 KiB
C#
129 lines
4.3 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using JetBrains.Annotations;
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using UnityEngine;
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using UnityEngine.UIElements;
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namespace UnityEditor.Searcher
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{
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public enum ItemExpanderState
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{
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Hidden,
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Collapsed,
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Expanded
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}
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[PublicAPI]
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public interface ISearcherAdapter
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{
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VisualElement MakeItem();
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VisualElement Bind(VisualElement target, SearcherItem item, ItemExpanderState expanderState, string text);
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string Title { get; }
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bool HasDetailsPanel { get; }
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bool AddAllChildResults { get; }
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bool MultiSelectEnabled { get; }
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float InitialSplitterDetailRatio { get; }
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void OnSelectionChanged(IEnumerable<SearcherItem> items);
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SearcherItem OnSearchResultsFilter(IEnumerable<SearcherItem> searchResults, string searchQuery);
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void InitDetailsPanel(VisualElement detailsPanel);
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}
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[PublicAPI]
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public class SearcherAdapter : ISearcherAdapter
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{
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const string k_EntryName = "smartSearchItem";
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const int k_IndentDepthFactor = 15;
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readonly VisualTreeAsset m_DefaultItemTemplate;
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public virtual string Title { get; }
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public virtual bool HasDetailsPanel => true;
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public virtual bool AddAllChildResults => true;
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public virtual bool MultiSelectEnabled => false;
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Label m_DetailsLabel;
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public virtual float InitialSplitterDetailRatio => 1.0f;
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public SearcherAdapter(string title)
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{
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Title = title;
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m_DefaultItemTemplate = Resources.Load<VisualTreeAsset>("SearcherItem");
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}
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public virtual VisualElement MakeItem()
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{
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// Create a visual element hierarchy for this search result.
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var item = m_DefaultItemTemplate.CloneTree();
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return item;
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}
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public virtual VisualElement Bind(VisualElement element, SearcherItem item, ItemExpanderState expanderState, string query)
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{
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var indent = element.Q<VisualElement>("itemIndent");
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indent.style.width = item.Depth * k_IndentDepthFactor;
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var expander = element.Q<VisualElement>("itemChildExpander");
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var icon = expander.Query("expanderIcon").First();
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icon.ClearClassList();
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switch (expanderState)
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{
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case ItemExpanderState.Expanded:
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icon.AddToClassList("Expanded");
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break;
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case ItemExpanderState.Collapsed:
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icon.AddToClassList("Collapsed");
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break;
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}
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var nameLabelsContainer = element.Q<VisualElement>("labelsContainer");
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nameLabelsContainer.Clear();
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var iconElement = element.Q<VisualElement>("itemIconVisualElement");
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iconElement.style.backgroundImage = item.Icon;
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if (item.Icon == null && item.CollapseEmptyIcon)
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{
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iconElement.style.display = DisplayStyle.None;
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} else
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{
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iconElement.style.display = DisplayStyle.Flex;
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}
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if (string.IsNullOrWhiteSpace(query))
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nameLabelsContainer.Add(new Label(item.Name));
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else
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SearcherHighlighter.HighlightTextBasedOnQuery(nameLabelsContainer, item.Name, query);
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element.userData = item;
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element.name = k_EntryName;
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return expander;
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}
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public virtual void InitDetailsPanel(VisualElement detailsPanel)
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{
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m_DetailsLabel = new Label();
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detailsPanel.Add(m_DetailsLabel);
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}
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public virtual void OnSelectionChanged(IEnumerable<SearcherItem> items)
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{
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if (m_DetailsLabel != null)
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{
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var itemsList = items.ToList();
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m_DetailsLabel.text = itemsList.Any() ? itemsList[0].Help : "No results";
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}
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}
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// How to handle filtering and prioritization of search results is specific to clients of the searcher window
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// This callback is meant to be implemented by child classes of SearcherAdapter as they need
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public virtual SearcherItem OnSearchResultsFilter(IEnumerable<SearcherItem> searchResults, string searchQuery)
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{
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return new SearcherItem("");
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}
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}
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}
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