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153 lines
5.2 KiB
153 lines
5.2 KiB
using System;
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using UnityEngine;
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using UnityEngine.Experimental.UIElements;
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namespace UnityEditor.PackageManager.UI
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{
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#if !UNITY_2018_3_OR_NEWER
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internal class PackageSearchToolbarFactory : UxmlFactory<PackageSearchToolbar>
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{
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protected override PackageSearchToolbar DoCreate(IUxmlAttributes bag, CreationContext cc)
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{
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return new PackageSearchToolbar();
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}
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}
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#endif
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internal class PackageSearchToolbar : VisualElement
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{
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#if UNITY_2018_3_OR_NEWER
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internal new class UxmlFactory : UxmlFactory<PackageSearchToolbar> { }
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#endif
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private const string kPlaceHolder = "Search by package name, verified, preview or version number...";
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public event Action OnFocusChange = delegate { };
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public event Action<string> OnSearchChange = delegate { };
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private string searchText;
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private bool showingPlaceHolder;
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private readonly VisualElement root;
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public PackageSearchToolbar()
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{
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root = Resources.GetTemplate("PackageSearchToolbar.uxml");
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Add(root);
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root.StretchToParentSize();
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SearchTextField.value = searchText;
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SearchTextField.maxLength = 54;
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SearchCancelButton.clickable.clicked += SearchCancelButtonClick;
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RegisterCallback<AttachToPanelEvent>(OnEnterPanel);
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RegisterCallback<DetachFromPanelEvent>(OnLeavePanel);
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searchText = PackageSearchFilter.Instance.SearchText;
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if (string.IsNullOrEmpty(searchText))
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{
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showingPlaceHolder = true;
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SearchTextField.value = kPlaceHolder;
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SearchTextField.AddToClassList("placeholder");
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}
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else
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{
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showingPlaceHolder = false;
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SearchTextField.value = searchText;
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SearchTextField.RemoveFromClassList("placeholder");
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}
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}
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public void GrabFocus()
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{
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SearchTextField.Focus();
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}
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public new void SetEnabled(bool enable)
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{
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base.SetEnabled(enable);
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SearchTextField.SetEnabled(enable);
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SearchCancelButton.SetEnabled(enable);
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}
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private void OnSearchTextFieldChange(ChangeEvent<string> evt)
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{
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if (showingPlaceHolder && evt.newValue == kPlaceHolder)
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return;
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if (!string.IsNullOrEmpty(evt.newValue))
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SearchCancelButton.AddToClassList("on");
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else
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SearchCancelButton.RemoveFromClassList("on");
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searchText = evt.newValue;
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OnSearchChange(searchText);
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}
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private void OnSearchTextFieldFocus(FocusEvent evt)
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{
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if (showingPlaceHolder)
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{
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SearchTextField.value = string.Empty;
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SearchTextField.RemoveFromClassList("placeholder");
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showingPlaceHolder = false;
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}
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}
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private void OnSearchTextFieldFocusOut(FocusOutEvent evt)
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{
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if (string.IsNullOrEmpty(searchText))
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{
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showingPlaceHolder = true;
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SearchTextField.AddToClassList("placeholder");
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SearchTextField.value = kPlaceHolder;
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}
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}
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private void SearchCancelButtonClick()
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{
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if (!string.IsNullOrEmpty(SearchTextField.value))
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{
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SearchTextField.value = string.Empty;
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}
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showingPlaceHolder = true;
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SearchTextField.AddToClassList("placeholder");
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SearchTextField.value = kPlaceHolder;
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}
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private void OnEnterPanel(AttachToPanelEvent evt)
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{
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SearchTextField.RegisterCallback<FocusEvent>(OnSearchTextFieldFocus);
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SearchTextField.RegisterCallback<FocusOutEvent>(OnSearchTextFieldFocusOut);
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SearchTextField.RegisterCallback<ChangeEvent<string>>(OnSearchTextFieldChange);
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SearchTextField.RegisterCallback<KeyDownEvent>(OnKeyDownShortcut);
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}
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private void OnLeavePanel(DetachFromPanelEvent evt)
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{
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SearchTextField.UnregisterCallback<FocusEvent>(OnSearchTextFieldFocus);
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SearchTextField.UnregisterCallback<FocusOutEvent>(OnSearchTextFieldFocusOut);
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SearchTextField.UnregisterCallback<ChangeEvent<string>>(OnSearchTextFieldChange);
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SearchTextField.UnregisterCallback<KeyDownEvent>(OnKeyDownShortcut);
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}
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private void OnKeyDownShortcut(KeyDownEvent evt)
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{
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if (evt.keyCode == KeyCode.Escape)
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{
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SearchCancelButtonClick();
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SearchCancelButton.Focus();
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evt.StopImmediatePropagation();
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return;
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}
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if (evt.keyCode == KeyCode.Tab)
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{
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OnFocusChange();
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evt.StopImmediatePropagation();
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}
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}
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private TextField SearchTextField { get { return root.Q<TextField>("searchTextField"); } }
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private Button SearchCancelButton { get { return root.Q<Button>("searchCancelButton"); } }
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}
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}
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