fixes #4692 (SpellChecker to use the native Windows speller if present)

1 files changed, 145 insertions, 0 deletions

diff --git a/plugins/SpellChecker/src/native.cpp b/plugins/SpellChecker/src/native.cpp
new file mode 100644
index 0000000000..b80ab78ea5
--- /dev/null
+++ b/plugins/SpellChecker/src/native.cpp
@@ -0,0 +1,145 @@
+/*
+Copyright (C) 2006-2010 Ricardo Pescuma Domenecci
+
+This is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public
+License as published by the Free Software Foundation; either
+version 2 of the License, or (at your option) any later version.
+
+This is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with this file; see the file license.txt.  If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.
+*/
+
+#include "stdafx.h"
+
+struct NativeDictionary : public Dictionary
+{
+	CComPtr<ISpellChecker> m_speller;
+
+	NativeDictionary(const wchar_t *wszLanguage) :
+		Dictionary(wszLanguage, 0)
+	{
+		if (auto *p = wcschr(language, '-'))
+			*p = '_';
+
+		g_plugin.m_spellFactory->CreateSpellChecker(wszLanguage, &m_speller);
+
+		if (!GetInfo())
+			if (auto *p = wcschr(full_name, '_'))
+				*p = '-';
+	}
+
+	virtual ~NativeDictionary()
+	{
+	}
+
+	// Return TRUE if the word is correct
+	virtual BOOL spell(const wchar_t *word)
+	{
+		CComPtr<IEnumSpellingError> error;
+		if (FAILED(m_speller->Check(word, &error)))
+			return FALSE;
+
+		CComPtr<ISpellingError> err;
+		if (FAILED(error->Next(&err)))
+			return FALSE;
+
+		return err == nullptr;
+	}
+
+	// Return a list of suggestions to a word
+	virtual Suggestions suggest(const wchar_t *word)
+	{
+		Suggestions ret;
+
+		CComPtr<IEnumString> suggestions;
+		if (SUCCEEDED(m_speller->Suggest(word, &suggestions))) {
+			wchar_t *ws;
+			ULONG fetched;
+			while (true) {
+				suggestions->Next(1, &ws, &fetched);
+				if (fetched == 0)
+					break;
+				ret.push_back(ws);
+			}
+		}
+		return ret;
+	}
+
+	// Return a list of auto suggestions to a word
+	// You have to free the list AND each item
+	virtual wchar_t* autoSuggestOne(const wchar_t * word)
+	{
+		CComPtr<IEnumString> suggestions;
+		if (SUCCEEDED(m_speller->Suggest(word, &suggestions))) {
+			wchar_t *ws;
+			ULONG fetched;
+			suggestions->Next(1, &ws, &fetched);
+			if (fetched) {
+				wchar_t *p = (wchar_t *)malloc(sizeof(wchar_t) * (mir_wstrlen(ws) + 1));
+				mir_wstrcpy(p, ws);
+				return p;
+			}
+		}
+		return nullptr;
+	}
+
+	// Return TRUE if the char is a word char
+	virtual BOOL isWordChar(wchar_t c)
+	{
+		if (c == 0)
+			return FALSE;
+
+		return iswalpha(c);
+	}
+
+	// Assert that all needed data is loaded
+	virtual void load()
+	{
+	}
+
+	virtual BOOL isLoaded()
+	{
+		return TRUE;
+	}
+
+	// Add a word to the user custom dict
+	virtual void addWord(const wchar_t *word)
+	{
+		m_speller->Add(word);
+	}
+
+	// Add a word to the list of ignored words
+	virtual void ignoreWord(const wchar_t * word)
+	{
+		m_speller->Ignore(word);
+	}
+};
+
+// Return a list of avaible languages
+void GetNativeDictionaries(OBJLIST<Dictionary> &dicts)
+{
+	CComPtr<IEnumString> ptr;
+	g_plugin.m_spellFactory->get_SupportedLanguages(&ptr);
+
+	ULONG fetched;
+	wchar_t *ws;
+	while (true) {
+		ptr->Next(1, &ws, &fetched);
+		if (fetched == 0)
+			break;
+
+		auto *pNew = new NativeDictionary(ws);
+		if (!mir_wstrcmpi(ws, pNew->full_name))
+			delete pNew;
+		else 
+			dicts.insert(pNew);
+	}
+}