/// <summary>
/// Determines the type of character that is currently pointed to by _offset,
/// </summary>
/// <param name="charsToConsume"></param>
/// <returns></returns>
private CharClass ClassifyChar(string strval, int offset, out int charsToConsume)
{
charsToConsume = 1;
char currChar = strval[offset];
if (currChar == '&')
{
int nextSemi = strval.IndexOf(';', offset + 1);
if (nextSemi != -1)
{
int code = HtmlUtils.DecodeEntityReference(strval.Substring(offset + 1, nextSemi - offset - 1));
if (code != -1)
{
charsToConsume = nextSemi - offset + 1;
currChar = (char)code;
}
}
}
return
(!WordRangeHelper.IsNonSymbolChar(currChar) ? CharClass.Break :
char.IsLetter(currChar) ? CharClass.Letter :
char.IsNumber(currChar) ? CharClass.Number :
currChar == '\'' ? CharClass.BoundaryBreak :
currChar == '’' ? CharClass.BoundaryBreak :
currChar == '.' ? CharClass.IncludedBreakChar :
CharClass.Break);
}
//takes one the first word on the range, and checks it for spelling errors
//***returns true if word is misspelled***
private bool ProcessWord(MshtmlWordRange word, out int offset, out int length)
{
offset = 0;
length = 0;
string otherWord = null;
SpellCheckResult result;
string currentWord = word.CurrentWord;
if (!word.IsCurrentWordUrlPart() && !WordRangeHelper.ContainsOnlySymbols(currentWord))
{
result = _spellingChecker.CheckWord(currentWord, out otherWord, out offset, out length);
}
else
{
result = SpellCheckResult.Correct;
}
if (result != SpellCheckResult.Correct)
{
//note: currently using this to not show any errors in smart content, since the fix isn't
// propagated to the underlying data structure
if (!word.FilterApplies())
{
return(true);
}
}
return(false);
}
/// <summary>
/// Continue the spell-checking loop
/// </summary>
private void ContinueSpellCheck()
{
// provide feedback (pump events so underlying control has an
// opportunity to update its display)
RemoveHighlight();
Application.DoEvents();
if (!spellingChecker.IsInitialized)
{
Trace.Fail("Spellchecker was uninitialized in the middle of spellchecking after removing highlight.");
return;
}
using (new WaitCursor())
{
// loop through all of the words in the word-range
bool currentWordMisspelled = false;
while (wordRange.HasNext())
{
// advance to the next word
wordRange.Next();
// check the spelling
string otherWord = null;
offset = 0;
length = wordRange.CurrentWord.Length;
SpellCheckResult result;
string CurrentWord = wordRange.CurrentWord;
if (!wordRange.IsCurrentWordUrlPart() && !WordRangeHelper.ContainsOnlySymbols(CurrentWord))
{
result = spellingChecker.CheckWord(CurrentWord, out otherWord, out offset, out length);
}
else
{
result = SpellCheckResult.Correct;
}
//note: currently using this to not show any errors in smart content, since the fix isn't
// propogated to the underlying data structure
if (result != SpellCheckResult.Correct && !wordRange.FilterAppliesRanged(offset, length))
{
// auto-replace
if (result == SpellCheckResult.AutoReplace)
{
// replace word and continue loop (pump events so the document
// is updated w/ the new word)
wordRange.Replace(offset, length, otherWord);
Application.DoEvents();
if (!spellingChecker.IsInitialized)
{
Trace.Fail("Spellchecker was uninitialized in the middle of spellchecking after auto-replace.");
return;
}
}
// some other incorrect word
else if (result != SpellCheckResult.Correct)
{
string misspelledWord = wordRange.CurrentWord;
if (offset > 0 && offset <= misspelledWord.Length)
{
misspelledWord = misspelledWord.Substring(offset);
}
if (length < misspelledWord.Length)
{
misspelledWord = misspelledWord.Substring(0, length);
}
// highlight the misspelled word
HighlightWordRange();
// set current misspelled word
labelWord.Text = misspelledWord;
// misspelling or incorrect capitalization
if (result == SpellCheckResult.Misspelled)
{
labelNotInDictionary.Text = NOT_IN_DICTIONARY;
ProvideSuggestions(misspelledWord);
}
else if (result == SpellCheckResult.Capitalization)
{
labelNotInDictionary.Text = CAPITALIZATION;
ProvideSuggestions(misspelledWord, 1);
}
// conditional replace
else if (result == SpellCheckResult.ConditionalReplace)
{
labelNotInDictionary.Text = NOT_IN_DICTIONARY;
ProvideConditionalReplaceSuggestion(otherWord);
}
// update state and break out of the loop
currentWordMisspelled = true;
break;
}
}
}
// there is a pending misspelling, make sure the form is visible
if (currentWordMisspelled)
{
EnsureFormVisible();
}
// current word not misspelled and no more words, spell check is finished
else if (!wordRange.HasNext())
{
completed = true;
EndSpellCheck();
}
}
}