private void listBox1_PreviewKeyDown(object sender, KeyEventArgs e)
{
if (e.Key == Key.Escape)
{
popupMatchingUsernames.IsOpen = false;
MatchingTexts.Clear();
e.Handled = true;
textBoxContent.Focus();
}
if (e.Key == Key.Return || e.Key == Key.Enter)
{
ListBox listbox = sender as ListBox;
if (listbox != null)
{
ExecuteSelectedItem(listbox);
e.Handled = true;
}
}
}
private void ExecuteSelectedItem(ListBox listbox)
{
if (listbox == null)
{
return;
}
string selected = listbox.SelectedItem as string;
if (!string.IsNullOrEmpty(selected))
{
ReplacingNow = true;
textBoxContent.Text = textBoxContent.Text.Remove(StartPosition, CurrentText.Length);
textBoxContent.Text = textBoxContent.Text.Insert(StartPosition, selected + " ");
UsernameStarted = false;
HashtagStarted = false;
WordStart = true;
MatchingTexts.Clear();
popupMatchingUsernames.IsOpen = false;
textBoxContent.Focus();
textBoxContent.SelectionStart = StartPosition + selected.Length + 1;
ListboxClicked = false;
ReplacingNow = false;
}
}
private void textBox1_TextChanged(object sender, TextChangedEventArgs e)
{
if (ReplacingNow)
{
return;
}
if (!WordStart)
{
foreach (TextChange change in e.Changes)
{
if (change.AddedLength > 0)
{
switch (textBoxContent.Text.Substring(change.Offset, 1))
{
case " ":
case ",":
case ".":
case ":":
case ";":
case "(":
case ")":
case "!":
case "?":
case "\"":
WordStart = true;
UsernameStarted = false;
HashtagStarted = false;
break;
default:
WordStart = false;
break;
}
if (WordStart)
{
break;
}
}
}
}
if (UsernameStarted || HashtagStarted)
{
foreach (TextChange change in e.Changes)
{
if (change.AddedLength > 0)
{
switch (textBoxContent.Text.Substring(change.Offset, 1))
{
case " ":
case ",":
case ".":
case ":":
case ";":
case "(":
case ")":
case "!":
case "?":
case "\"":
WordStart = true;
UsernameStarted = false;
HashtagStarted = false;
break;
default:
WordStart = false;
break;
}
if (WordStart)
{
break;
}
}
}
}
if (WordStart && (!UsernameStarted && !HashtagStarted))
{
foreach (TextChange change in e.Changes)
{
if (change.AddedLength > 0)
{
if (textBoxContent.Text.Substring(change.Offset, 1) == " ")
{
WordStart = true;
continue;
}
else
{
WordStart = false;
}
if (textBoxContent.Text.Substring(change.Offset, 1) == "@")
{
UsernameStarted = true;
StartPosition = change.Offset;
CurrentText = "";
}
else if (textBoxContent.Text.Substring(change.Offset, 1) == "#")
{
HashtagStarted = true;
StartPosition = change.Offset;
CurrentText = "";
}
}
}
}
if (UsernameStarted)
{
foreach (TextChange change in e.Changes)
{
if (change.AddedLength > 0)
{
CurrentText += textBoxContent.Text.Substring(change.Offset, change.AddedLength);
}
else if (change.RemovedLength > 0)
{
if (change.RemovedLength >= CurrentText.Length)
{
UsernameStarted = false;
CurrentText = "";
MatchingTexts.Clear();
popupMatchingUsernames.IsOpen = false;
return;
}
else if (change.RemovedLength == CurrentText.Length)
{
WordStart = true;
CurrentText = "";
popupMatchingUsernames.IsOpen = false;
MatchingTexts.Clear();
}
else
{
CurrentText = CurrentText.Substring(0, CurrentText.Length - change.RemovedLength);
}
}
}
if (Usernames.Where(name => name.ToLower().StartsWith(CurrentText.ToLower())).Count() > 0)
{
MatchingTexts.Clear();
foreach (string username in Usernames.Where(name => name.ToLower().StartsWith(CurrentText.ToLower())))
{
MatchingTexts.Add(username);
if (MatchingTexts.Count >= Properties.Settings.Default.MaxNumberOfEntriesInAutocomplete)
{
break;
}
}
popupMatchingUsernames.PlacementRectangle = textBoxContent.GetRectFromCharacterIndex(textBoxContent.CaretIndex, true);
popupMatchingUsernames.IsOpen = true;
}
else
{
MatchingTexts.Clear();
popupMatchingUsernames.IsOpen = false;
}
}
else if (HashtagStarted)
{
foreach (TextChange change in e.Changes)
{
if (change.AddedLength > 0)
{
CurrentText += textBoxContent.Text.Substring(change.Offset, change.AddedLength);
}
else if (change.RemovedLength > 0)
{
if (change.RemovedLength >= CurrentText.Length)
{
HashtagStarted = false;
CurrentText = "";
MatchingTexts.Clear();
popupMatchingUsernames.IsOpen = false;
return;
}
else if (change.RemovedLength == CurrentText.Length)
{
WordStart = true;
CurrentText = "";
popupMatchingUsernames.IsOpen = false;
MatchingTexts.Clear();
}
else
{
CurrentText = CurrentText.Substring(0, CurrentText.Length - change.RemovedLength);
}
}
}
if (Hashtags.Where(tag => tag.ToLower().StartsWith(CurrentText.ToLower())).Count() > 0)
{
MatchingTexts.Clear();
foreach (string hashtag in Hashtags.Where(tag => tag.ToLower().StartsWith(CurrentText.ToLower())))
{
MatchingTexts.Add(hashtag);
if (MatchingTexts.Count >= Properties.Settings.Default.MaxNumberOfEntriesInAutocomplete)
{
break;
}
}
popupMatchingUsernames.PlacementRectangle = textBoxContent.GetRectFromCharacterIndex(textBoxContent.CaretIndex, true);
popupMatchingUsernames.IsOpen = true;
}
else
{
MatchingTexts.Clear();
popupMatchingUsernames.IsOpen = false;
}
}
}
private void textBox1_TextChanged(object sender, TextChangedEventArgs e)
{
if (ReplacingNow)
{
return;
}
if (!WordStart)
{
foreach (TextChange change in e.Changes)
{
if (change.AddedLength > 0)
{
switch (textBoxContent.Text.Substring(change.Offset, 1))
{
case " ":
case ",":
case ".":
case ":":
case ";":
case "(":
case ")":
case "!":
case "?":
case "\"":
WordStart = true;
UsernameStarted = false;
HashtagStarted = false;
break;
default:
WordStart = false;
break;
}
if (WordStart)
{
break;
}
}
}
}
if (UsernameStarted || HashtagStarted)
{
foreach (TextChange change in e.Changes)
{
if (change.AddedLength > 0)
{
switch (textBoxContent.Text.Substring(change.Offset, 1))
{
case " ":
case ",":
case ".":
case ":":
case ";":
case "(":
case ")":
case "!":
case "?":
case "\"":
WordStart = true;
UsernameStarted = false;
HashtagStarted = false;
break;
default:
WordStart = false;
break;
}
if (WordStart)
{
break;
}
}
}
}
if (WordStart && (!UsernameStarted && !HashtagStarted))
{
foreach (TextChange change in e.Changes)
{
if (change.AddedLength > 0)
{
if (textBoxContent.Text.Substring(change.Offset, 1) == " ")
{
WordStart = true;
continue;
}
else
{
WordStart = false;
}
if (textBoxContent.Text.Substring(change.Offset, 1) == "@")
{
UsernameStarted = true;
StartPosition = change.Offset;
CurrentText = "";
}
else if (textBoxContent.Text.Substring(change.Offset, 1) == "#")
{
HashtagStarted = true;
StartPosition = change.Offset;
CurrentText = "";
}
}
}
}
if (UsernameStarted)
{
foreach (TextChange change in e.Changes)
{
if (change.AddedLength > 0)
{
CurrentText += textBoxContent.Text.Substring(change.Offset, change.AddedLength);
}
else if (change.RemovedLength > 0)
{
if (change.RemovedLength >= CurrentText.Length)
{
UsernameStarted = false;
CurrentText = "";
MatchingTexts.Clear();
popupMatchingUsernames.IsOpen = false;
return;
}
else if (change.RemovedLength == CurrentText.Length)
{
WordStart = true;
CurrentText = "";
popupMatchingUsernames.IsOpen = false;
MatchingTexts.Clear();
}
else
{
CurrentText = CurrentText.Substring(0, CurrentText.Length - change.RemovedLength);
}
}
}
if (AppController.Current.AllKnownUsernames.Where(name => name.ToLower().StartsWith(CurrentText.ToLower())).Count() > 0)
{
MatchingTexts.Clear();
foreach (string username in AppController.Current.AllKnownUsernames.Where(name => name.ToLower().StartsWith(CurrentText.ToLower())))
{
MatchingTexts.Add(username);
if (MatchingTexts.Count >= 10)
{
break;
}
}
popupMatchingUsernames.PlacementRectangle = textBoxContent.GetRectFromCharacterIndex(textBoxContent.CaretIndex, true);
popupMatchingUsernames.IsOpen = true;
}
else
{
MatchingTexts.Clear();
popupMatchingUsernames.IsOpen = false;
}
}
else if (HashtagStarted)
{
foreach (TextChange change in e.Changes)
{
if (change.AddedLength > 0)
{
CurrentText += textBoxContent.Text.Substring(change.Offset, change.AddedLength);
}
else if (change.RemovedLength > 0)
{
if (change.RemovedLength >= CurrentText.Length)
{
HashtagStarted = false;
CurrentText = "";
MatchingTexts.Clear();
popupMatchingUsernames.IsOpen = false;
return;
}
else if (change.RemovedLength == CurrentText.Length)
{
WordStart = true;
CurrentText = "";
popupMatchingUsernames.IsOpen = false;
MatchingTexts.Clear();
}
else
{
CurrentText = CurrentText.Substring(0, CurrentText.Length - change.RemovedLength);
}
}
}
if (AppController.Current.AllKnownHashtags.Where(tag => tag.ToLower().StartsWith(CurrentText.ToLower())).Count() > 0)
{
MatchingTexts.Clear();
foreach (string hashtag in AppController.Current.AllKnownHashtags.Where(tag => tag.ToLower().StartsWith(CurrentText.ToLower())))
{
MatchingTexts.Add(hashtag);
if (MatchingTexts.Count >= 10)
{
break;
}
}
popupMatchingUsernames.PlacementRectangle = textBoxContent.GetRectFromCharacterIndex(textBoxContent.CaretIndex, true);
popupMatchingUsernames.IsOpen = true;
}
else
{
MatchingTexts.Clear();
popupMatchingUsernames.IsOpen = false;
}
}
#region links as markups
string pattern = @"\[(?<markupText>[^\]]+)\]\((?<markupLink>[^)]+)\)";
NumberOfChars = textBoxContent.Text.Length;
MarkdownLinksInText.Clear();
foreach (Match match in Regex.Matches(textBoxContent.Text, pattern, RegexOptions.IgnoreCase))
{
if (!MarkdownLinksInText.ContainsKey(match.Groups["markupLink"].Value))
{
MarkdownLinksInText.Add(match.Groups["markupLink"].Value, match.Groups["markupText"].Value);
}
NumberOfChars -= 4 + match.Groups["markupLink"].Value.Length;
}
#endregion
}
