private string GetLastWord(bool isSpaceKey)
{
string txt = InputTextBox.Text;
int offset = 1;
if (isSpaceKey && txt[InputTextBox.CaretIndex - 1] == ' ')
{
offset = 2;
}
int wordStart = txt.LastIndexOf(' ', InputTextBox.CaretIndex - offset);
if (wordStart == -1)
{
wordStart = 0;
}
int wordEnd = txt.IndexOf(' ', wordStart + 1);
if (wordEnd == -1)
{
if (InputTextBox.Text.Length > InputTextBox.CaretIndex)
{
wordEnd = InputTextBox.Text.Length;
}
else
{
wordEnd = InputTextBox.CaretIndex;
}
}
else if (isSpaceKey)
{
wordEnd++;
}
string lastWord = txt.Substring(wordStart, wordEnd - wordStart);
if (!isSpaceKey)
{
lastWord = lastWord.TrimStart();
}
int i = 0;
for (; i < lastWord.Length; i++)
{
if (lastWord[i] < 256)
{
break;
}
}
if (i > 0)
{
return(HindiProcessor.GetReadableWord(lastWord.Substring(0, i)) + lastWord.Substring(i));
}
return(lastWord);
}
private void InputTextBox_KeyUp(object sender, KeyEventArgs e)
{
TextBox txtBox = sender as TextBox;
if ((txtBox == null) || (txtBox.CaretIndex == 0))
{
return;
}
bool isSpaceKey = System.Windows.Input.Key.Space == e.Key;
string lastWord = GetLastWord(isSpaceKey);
if (e.Key == Key.Back)
{
if (lastWord.Any() && lastWord.Last() == ' ')
{
return;
}
else if (HindiProcessor.IsHindiWord(lastWord))
{
lastWord = HindiProcessor.GetReadableWord(lastWord.TrimStart());
}
}
if (e.Key == Key.OemPipe)
{
string hindiWord = HindiProcessor.GetHindiWord(lastWord);
ReplaceLastWordWithSelection(lastWord, hindiWord);
string trans = GetTranslatedText(txtBox.Text);
return;
}
if (isSpaceKey)
{
if (!HindiProcessor.IsHindiWord(lastWord))
{
string hindiWord = HindiProcessor.GetHindiWord(lastWord);
ReplaceLastWordWithSelection(lastWord, hindiWord);
}
else
{
string selectedItem = SuggestionsListBox.SelectedItem?.ToString();
ReplaceLastWordWithSelection(lastWord, selectedItem);
}
PopupSuggestions.IsOpen = false;
e.Handled = true;
return;
}
if (System.Windows.Input.Key.Escape == e.Key)
{
PopupSuggestions.IsOpen = false;
return;
}
if (PopupSuggestions.IsOpen)
{
if (System.Windows.Input.Key.Enter == e.Key)
{
string selectedItem = SuggestionsListBox.SelectedItem?.ToString();
ReplaceLastWordWithSelection(lastWord, selectedItem);
PopupSuggestions.IsOpen = false;
e.Handled = true;
return;
}
else if (System.Windows.Input.Key.Down == e.Key && !SuggestionsListBox.IsFocused)
{
SuggestionsListBox.SelectionChanged -= SuggestionsListBox_SelectionChanged;
SuggestionsListBox.Focus();
//SuggestionsListBox.SelectedIndex = 0;
SuggestionsListBox.SelectionChanged += SuggestionsListBox_SelectionChanged;
return;
}
}
else
{
}
// InputTextBox.KeyUp -= InputTextBox_KeyUp;
if (!string.IsNullOrEmpty(lastWord))
{
var allSuggestions = Shabdkosh.GetSuggestions(lastWord);
if (allSuggestions.Count > 0)
{
PopupSuggestions.PlacementTarget = InputTextBox;
PopupSuggestions.PlacementRectangle = InputTextBox.GetRectFromCharacterIndex(InputTextBox.CaretIndex, true);
PopupSuggestions.IsOpen = true;
PopulateSuggestions(lastWord);
}
}
SuggestionsListBox.SelectedIndex = 0;
//SuggestionsListBox.Focus();
}
