src/Files.App.Controls/Toolbar/ToolbarButton/ToolbarButton.cs - main - githubmirror/Files

src/Files.App.Controls/Toolbar/ToolbarButton/ToolbarButton.cs
180 строк3 KB
terat
Code Quality: Resolve all nullability warnings (#18455)
05 май 2026, 05:45
05 май 2026, 05:45be7d323
// Copyright (c) Files Community
// Licensed under the MIT License.

namespace Files.App.Controls
{
	public partial class ToolbarButton : Button, IToolbarItemSet
	{
		// True when a button has its Content property assigned
		private bool _hasContent = false;

		public ToolbarButton()
		{
			DefaultStyleKey = typeof(ToolbarButton);
		}

		/// <inheritdoc/>
		protected override void OnApplyTemplate()
		{
			RegisterPropertyChangedCallback(ContentProperty, OnContentChanged);

			base.OnApplyTemplate();

			UpdateContentStates(CheckHasContent());
		}

		#region Private Getters

		private bool CheckHasContent()
		{
			return _hasContent;
		}

		#endregion

		#region Private Setters

		private void SetHasContent(bool newValue)
		{
			_hasContent = newValue;
		}

		#endregion

		#region Update functions

		/// <summary>
		/// Updates the ToolbarButton's Label string value as it changes.
		/// </summary>
		/// <param name="newLabel"></param>
		private void UpdateLabel(string newLabel)
		{
			///
			/// Updates the internal item's Text or Label
			/// property as it changes.
			///
		}



		private void UpdateContent(object? newContent)
		{
			if (CheckHasContent() == false)
			{
				// We clear the content
			}
			else
			{
				// We make sure the content displays
			}

			UpdateContentStates(CheckHasContent());
		}



		/// <summary>
		/// Sets the ToolbarButton's ContentState based on whether the
		/// Content property has been assigned.
		/// </summary>
		/// <param name="hasContent"></param>
		private void UpdateContentStates(bool hasContent)
		{
			if (hasContent)
			{
				VisualStateManager.GoToState(this, HasContentStateName, true);
			}
			else
			{
				VisualStateManager.GoToState(this, HasNoContentStateName, true);
			}
		}



		/// <summary>
		/// Updates the ToolbarButton's ThemedIcon TemplatePart's Style value
		/// </summary>
		/// <param name="newStyle"></param>
		private void UpdateThemedIcon(Style newStyle)
		{
			///
			/// Updates the internal item's ThemedIcon
			/// Style as it changes.
			///
		}



		/// <summary>
		/// Updates the ToolbarButton's ThemedIcon.IconSize double value
		/// </summary>
		/// <param name="newSize"></param>
		private void UpdateIconSize(double newSize)
		{
			///
			/// Updates the internal item's ThemedIcon
			/// IconSize as it changes.
			///
		}

		#endregion

		#region Property Changed Events

		/// <summary>
		/// Invoked when the Label string property has changed
		/// </summary>
		/// <param name="newLabel"></param>
		private void LabelChanged(string newLabel)
		{
			UpdateLabel(newLabel);
		}



		/// <summary>
		/// Invoked when the ThemedIcon Style property has changed.
		/// </summary>
		/// <param name="newStyle"></param>
		private void ThemedIconChanged(Style newStyle)
		{
			UpdateThemedIcon(newStyle);
		}


		/// <summary>
		/// Invoked when the IconSize double property has changed.
		/// </summary>
		/// <param name="newSize"></param>
		private void IconSizeChanged(double newSize)
		{
			UpdateIconSize(newSize);
		}

		#endregion

		#region ButtonBase Events

		/// <summary>
		/// Invoked when the ToolbarButton's ButtonBase OnContentChanged event
		/// is triggered.
		/// </summary>
		/// <param name="newContent"></param>
		private void ContentChanged(object? newContent)
		{
			if (newContent != null)
			{
				SetHasContent(true);
			}
			else
			{
				SetHasContent(false);
			}

			UpdateContent(newContent);
		}

		#endregion
	}
}