Integrated spell checking

- inline spell highlighter. This requires WebKit 2.3 to work.

- Addition of a suggested replacement word list to the context menu,
  for the word right clicked on

- A standard modeless spell check dialog that works on the current
  editable text (or selection).
  Heavily cribbed from Dawit's work on kdewebkitpart.

BUG: 305720
CCMAIL: lindsay.mathieson@gmail.com
REVIEW: 106417
REVIEWED-BY: adjam

1 files changed, 197 insertions, 0 deletions

diff --git a/src/kspellplugin.cpp b/src/kspellplugin.cpp
new file mode 100644
index 00000000..d25ddf9f
--- /dev/null
+++ b/src/kspellplugin.cpp
@@ -0,0 +1,197 @@
+/* ============================================================
+*
+* This file is a part of the rekonq project
+*
+* Copyright (C) 2012 by Lindsay Mathieson <lindsay dot mathieson at gmail dot com>
+*
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License as
+* published by the Free Software Foundation; either version 2 of
+* the License or (at your option) version 3 or any later version
+* accepted by the membership of KDE e.V. (or its successor approved
+* by the membership of KDE e.V.), which shall act as a proxy
+* defined in Section 14 of version 3 of the license.
+*
+* This program 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 General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*
+* ============================================================ */
+
+
+#include <stdio.h>
+#include <KDebug>
+#include "kspellplugin.h"
+#include <QTextBoundaryFinder>
+
+#include "rekonq.h"
+
+#define methodDebug() kDebug("KWebSpellChecker: %s", __FUNCTION__)
+
+/////////////////////////////
+// KWebSpellChecker
+
+
+KWebSpellChecker::KWebSpellChecker()
+{
+    m_speller = new Sonnet::Speller();
+    kDebug() << "!!! Client = " << m_speller->defaultClient() << endl;
+    kDebug() << "!!! Language = " << m_speller->defaultLanguage() << endl;
+}
+
+KWebSpellChecker::~KWebSpellChecker()
+{
+    delete m_speller;
+}
+
+bool KWebSpellChecker::isContinousSpellCheckingEnabled() const
+{
+    return ReKonfig::automaticSpellChecking();
+}
+
+void KWebSpellChecker::toggleContinousSpellChecking()
+{
+    ReKonfig::setAutomaticSpellChecking(! ReKonfig::automaticSpellChecking());
+}
+
+void KWebSpellChecker::learnWord(const QString& word)
+{
+    Q_UNUSED(word);
+}
+
+void KWebSpellChecker::ignoreWordInSpellDocument(const QString& word)
+{
+    Q_UNUSED(word);
+}
+
+static bool isValidWord(const QString &str)
+{
+    if (str.isEmpty() || (str.length() == 1 && !str[0].isLetter()))
+    {
+        return false;
+    }
+    const int length = str.length();
+    for (int i = 0; i < length; ++i)
+    {
+        if (!str[i].isNumber())
+        {
+            return true;
+        }
+    }
+    // 'str' only contains numbers
+    return false;
+}
+
+void KWebSpellChecker::checkSpellingOfString(const QString& word, int* misspellingLocation, int* misspellingLength)
+{
+    // sanity check
+    if (misspellingLocation == NULL || misspellingLength == NULL)
+        return;
+
+    *misspellingLocation = -1;
+    *misspellingLength = 0;
+
+    kDebug() << word << endl;
+
+    QTextBoundaryFinder finder =  QTextBoundaryFinder(QTextBoundaryFinder::Word, word);
+
+    QTextBoundaryFinder::BoundaryReasons boundary = finder.boundaryReasons();
+    int start = finder.position(), end = finder.position();
+    bool inWord = (boundary & QTextBoundaryFinder::StartWord) != 0;
+    while (finder.toNextBoundary() > 0)
+    {
+        boundary = finder.boundaryReasons();
+        if ((boundary & QTextBoundaryFinder::EndWord) && inWord)
+        {
+            end = finder.position();
+            QString str = finder.string().mid(start, end - start);
+            if (isValidWord(str))
+            {
+#if 1
+                qDebug() << "Word at " << start << " word = '"
+                         <<  str << "', len = " << str.length();
+#endif
+                if (m_speller->isMisspelled(str))
+                {
+                    *misspellingLocation = start;
+                    *misspellingLength = end - start;
+                }
+                return;
+            }
+            inWord = false;
+        }
+        if ((boundary & QTextBoundaryFinder::StartWord))
+        {
+            start = finder.position();
+            inWord = true;
+        }
+    }
+}
+
+QString KWebSpellChecker::autoCorrectSuggestionForMisspelledWord(const QString& word)
+{
+    /*
+    QStringList words = m_speller->suggest(word);
+    if (words.size() > 0)
+        return words[0];
+    else
+        return QString("");
+    */
+
+
+    return QString("");
+}
+
+void KWebSpellChecker::guessesForWord(const QString& word, const QString& context, QStringList& guesses)
+{
+    Q_UNUSED(context);
+
+    QStringList words = m_speller->suggest(word);
+    guesses = words;
+}
+
+bool KWebSpellChecker::isGrammarCheckingEnabled()
+{
+    return false;
+}
+
+void KWebSpellChecker::toggleGrammarChecking()
+{
+}
+
+void KWebSpellChecker::checkGrammarOfString(const QString&, QList<GrammarDetail>&, int* badGrammarLocation, int* badGrammarLength)
+{
+    Q_UNUSED(badGrammarLocation);
+    Q_UNUSED(badGrammarLength);
+}
+
+
+////////////////////////////////////////////
+// KWebKitPlatformPlugin
+KWebKitPlatformPlugin::KWebKitPlatformPlugin()
+{
+}
+
+KWebKitPlatformPlugin::~KWebKitPlatformPlugin()
+{
+}
+
+
+bool KWebKitPlatformPlugin::supportsExtension(Extension ext) const
+{
+    return ext == SpellChecker;
+}
+
+QObject* KWebKitPlatformPlugin::createExtension(Extension) const
+{
+    return new KWebSpellChecker();
+}
+
+Q_EXPORT_PLUGIN2(kwebspellchecker, KWebKitPlatformPlugin);
+Q_IMPORT_PLUGIN(kwebspellchecker)
+