dotNetStudyWithGPT/MySolution/ToDoApp/SubControl/PlaceholderTextBox.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace ToDoApp.SubControl
{
    /// <summary>
    /// PlaceholderTextBox.xaml에 대한 상호 작용 논리
    /// </summary>
    public partial class PlaceholderTextBox : UserControl
    {
        public string TPlaceholder { get; set; } = "";
        public int TFontSize { get; set; } = 12;
        public FontWeight TFontWeight { get; set; } = FontWeights.Normal;
        public int THeight { get; set; } = 20;
        public VerticalAlignment TVerticalAlignment { get; set; } = VerticalAlignment.Center;
        public Brush TForeground { get; set; } = Brushes.Gray;

        public PlaceholderTextBox()
        {
            InitializeComponent();

            this.DataContext = this;
        }

        public string Text
        {
            get { return tbxMain.Text; }
            set { tbxMain.Text = value; }
        }

        private void tbxMain_GotFocus(object sender, RoutedEventArgs e)
        {
            TextBox textBox = sender as TextBox;
            if (textBox == null)
                return;

            if (textBox.Text != this.TPlaceholder)
                return;

            textBox.Text = "";
            textBox.Foreground = Brushes.Black;
        }

        private void tbxMain_LostFocus(object sender, RoutedEventArgs e)
        {
            TextBox textBox = sender as TextBox;
            if (textBox == null)
                return;

            if (!string.IsNullOrEmpty(textBox.Text))
                return;

            textBox.Text = this.TPlaceholder;
            textBox.Foreground = Brushes.Gray;
        }
    }
}