Add project files.

2024-09-02 10:03:23 +07:00
parent 42def0d4aa
commit 6219298497
361 changed files with 58423 additions and 0 deletions
@@ -0,0 +1,135 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using VirtualKeyboard.Wpf.Types;
+
+namespace VirtualKeyboard.Wpf.ViewModels
+{
+    class VirtualKeyboardViewModel : INotifyPropertyChanged
+    {
+        private string _keyboardText;
+        public string KeyboardText {
+            get => _keyboardText;
+            set
+            {
+                _keyboardText = value;
+                NotifyPropertyChanged(nameof(KeyboardText));
+            }
+        }
+        private KeyboardType _keyboardType;
+        public KeyboardType KeyboardType {
+            get => _keyboardType; 
+            private set
+            {
+                _keyboardType = value;
+                NotifyPropertyChanged(nameof(KeyboardType));
+            }
+        }
+        private bool _uppercase;
+        public bool Uppercase
+        {
+            get => _uppercase;
+            private set
+            {
+                _uppercase = value;
+                NotifyPropertyChanged(nameof(Uppercase));
+            }
+        }
+        private int _caretPosition;
+        public int CaretPosition
+        {
+            get => _caretPosition;
+            set
+            {
+                if (value < 0) _caretPosition = 0;
+                else if (value > KeyboardText.Length) _caretPosition = KeyboardText.Length;
+                else _caretPosition = value;
+                NotifyPropertyChanged(nameof(CaretPosition));
+            }
+        }
+        private string _selectedValue;
+        public string SelectedValue
+        {
+            get => _selectedValue;
+            set
+            {
+                _selectedValue = value;
+                NotifyPropertyChanged(nameof(SelectedValue));
+            }
+        }
+        public Command AddCharacter { get; }
+        public Command ChangeCasing { get; }
+        public Command RemoveCharacter { get; }
+        public Command ChangeKeyboardType { get; }
+        public Command Accept { get; }
+
+        public VirtualKeyboardViewModel(string initialValue)
+        {
+            _keyboardText = initialValue;
+            _keyboardType = KeyboardType.Alphabet;
+            _uppercase = false;
+            CaretPosition = _keyboardText.Length;
+
+            AddCharacter = new Command(a =>
+            {
+                if (a is string character)
+                    if (character.Length == 1)
+                    {
+                        if (Uppercase) character = character.ToUpper();
+                        if (!string.IsNullOrEmpty(SelectedValue))
+                        {
+                            RemoveSubstring(SelectedValue);
+                            KeyboardText = KeyboardText.Insert(CaretPosition, character);
+                            CaretPosition++;
+                            SelectedValue = "";
+                        }
+                        else
+                        {
+                            KeyboardText = KeyboardText.Insert(CaretPosition, character);
+                            CaretPosition++;
+                        }
+                    }
+            });
+            ChangeCasing = new Command(a => Uppercase = !Uppercase);
+            RemoveCharacter = new Command(a =>
+            {
+                if(!string.IsNullOrEmpty(SelectedValue))
+                {
+                    RemoveSubstring(SelectedValue);
+                }
+                else
+                {
+                    var position = CaretPosition - 1;
+                    if (position >= 0)
+                    {
+                        KeyboardText = KeyboardText.Remove(position, 1);
+                        if (position < KeyboardText.Length) CaretPosition--;
+                        else CaretPosition = KeyboardText.Length;
+                    }
+                }
+            });
+            ChangeKeyboardType = new Command(a =>
+            {
+                if (KeyboardType == KeyboardType.Alphabet) KeyboardType = KeyboardType.Special;
+                else KeyboardType = KeyboardType.Alphabet;
+            });
+            Accept = new Command(a => VKeyboard.Close());
+        }
+
+        private void RemoveSubstring(string substring)
+        {
+            var position = KeyboardText.IndexOf(substring);
+            KeyboardText = KeyboardText.Remove(position, substring.Length);
+        }
+
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        private void NotifyPropertyChanged(string prop)
+        {
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(prop));
+        }
+    }
+}