fix: headword dialog filter and export

the wildcard and regex filter does not work as expected.

fix #556

src/dict/dictionary.cc

@@ -17,7 +17,6 @@
 #include <QFileInfo>
 #include <QCryptographicHash>
 #include <QDateTime>
-#include "fsencoding.hh"
 #include <QImage>
 #include <QPainter>
 #include <QRegularExpression>

src/headwordsmodel.cc

@@ -46,10 +46,29 @@ void HeadwordListModel::setFilter( QRegularExpression reg )
   queuedRequests.push_back( sr );
 }
 
+void HeadwordListModel::addMatches( QStringList matches)
+{
+  QStringList filtered;
+  for ( auto & w : matches ) {
+    if ( !words.contains( w ) ) {
+      filtered << w;
+    }
+  }
+
+  if ( filtered.isEmpty() )
+    return;
+
+  beginInsertRows( QModelIndex(), words.size(), words.size() + filtered.count() - 1 );
+  for ( const auto & word : filtered ) {
+    words.append( word );
+  }
+  endInsertRows();
+}
+
 void HeadwordListModel::requestFinished()
 {
   // See how many new requests have finished, and if we have any new results
-  for( std::list< sptr< Dictionary::WordSearchRequest > >::iterator i = queuedRequests.begin();
+  for( auto i = queuedRequests.begin();
        i != queuedRequests.end(); )
   {
     if( ( *i )->isFinished() )

src/headwordsmodel.hh

@@ -20,6 +20,7 @@ public:
   QVariant data( const QModelIndex & index, int role = Qt::DisplayRole ) const override;
   QString getRow( int row );
   void setFilter( QRegularExpression );
+  void addMatches( QStringList matches );
   int getCurrentIndex();
   QSet< QString > getRemainRows( int & nodeIndex );
 signals:

src/ui/dictheadwords.cc

@@ -17,19 +17,19 @@
 #include "wildcard.hh"
 #include "help.hh"
 #include <QMessageBox>
+#include <QMutexLocker>
 
 #define AUTO_APPLY_LIMIT 150000
 
-DictHeadwords::DictHeadwords( QWidget *parent, Config::Class & cfg_,
-                              Dictionary::Class * dict_ ) :
-  QDialog(parent)
-, cfg( cfg_ )
-, dict( dict_ )
-, helpAction( this )
+DictHeadwords::DictHeadwords( QWidget * parent, Config::Class & cfg_, Dictionary::Class * dict_ ):
+  QDialog( parent ),
+  cfg( cfg_ ),
+  dict( dict_ ),
+  helpAction( this )
 {
   ui.setupUi( this );
 
-  bool fromMainWindow = parent->objectName() == "MainWindow";
+  const bool fromMainWindow = parent->objectName() == "MainWindow";
 
   if( fromMainWindow )
     setAttribute( Qt::WA_DeleteOnClose, false );
@@ -126,7 +126,7 @@ void DictHeadwords::setup( Dictionary::Class *dict_ )
 
   setWindowTitle( QString::fromUtf8( dict->getName().c_str() ) );
 
-  auto size = dict->getWordCount();
+  const auto size = dict->getWordCount();
   model->setDict(dict);
   proxy->sort( 0 );
   filterChanged();
@@ -180,13 +180,13 @@ bool DictHeadwords::eventFilter( QObject * obj, QEvent * ev )
 void DictHeadwords::okButtonClicked()
 {
   savePos();
-  closeDialog();
+  emit closeDialog();
 }
 
 void DictHeadwords::reject()
 {
   savePos();
-  closeDialog();
+  emit closeDialog();
 }
 
 void DictHeadwords::exportButtonClicked()
@@ -201,10 +201,10 @@ void DictHeadwords::filterChangedInternal()
     QTimer::singleShot( 100, this, &DictHeadwords::filterChanged );
 }
 
-void DictHeadwords::filterChanged()
+QRegularExpression DictHeadwords::getFilterRegex(  )
 {
-  QRegExp::PatternSyntax syntax =
-          QRegExp::PatternSyntax( ui.searchModeCombo->itemData(
+  const QRegExp::PatternSyntax syntax =
+    static_cast< QRegExp::PatternSyntax >(ui.searchModeCombo->itemData(
       ui.searchModeCombo->currentIndex() ).toInt());
 
   QRegularExpression::PatternOptions options = QRegularExpression::UseUnicodePropertiesOption;
@@ -225,17 +225,35 @@ void DictHeadwords::filterChanged()
       break;
   }
 
-  QRegularExpression regExp( pattern, options );
+  QRegularExpression regExp = QRegularExpression( pattern, options );
 
   if( !regExp.isValid() )
   {
     gdWarning( "Invalid regexp pattern: %s\n", pattern.toUtf8().data() );
-    regExp.setPattern( QString::fromLatin1( "\1" ) );
   }
+  return regExp;
+}
+
+void DictHeadwords::filterChanged()
+{
+  const QRegularExpression regExp= getFilterRegex();
 
   QApplication::setOverrideCursor( Qt::WaitCursor );
 
-  model->setFilter(regExp);
+  qDebug()<<regExp.pattern();
+  if ( sortedWords.isEmpty() && regExp.isValid() && !regExp.pattern().isEmpty() ) {
+    const int headwordsNumber = model->totalCount();
+
+    QProgressDialog progress( tr( "Loading headwords..." ), tr( "Cancel" ), 0, headwordsNumber, this );
+    progress.setWindowModality( Qt::WindowModal );
+    loadAllSortedWords( progress );
+    progress.close();
+  }
+
+  const auto filtered = sortedWords.filter( regExp );
+  model->addMatches( filtered );
+  
+  // model->setFilter(regExp);
 
   proxy->setFilterRegularExpression( regExp );
   proxy->sort( 0 );
@@ -266,6 +284,47 @@ void DictHeadwords::showHeadwordsNumber()
                              .arg( QString::number( model->totalCount() ), QString::number( proxy->rowCount() ) ) );
 }
 
+// TODO , the ui and the code mixed together , this is not the right way to do this. need future refactor
+void  DictHeadwords::loadAllSortedWords( QProgressDialog & progress )
+{
+  const int headwordsNumber = model->totalCount();
+
+  QMutexLocker _( &mutex );
+  if ( sortedWords.isEmpty() ) {
+    QSet< QString > allHeadwords;
+
+    int totalCount = 0;
+    for ( int i = 0; i < headwordsNumber && i < model->wordCount(); ++i ) {
+      if ( progress.wasCanceled() )
+        break;
+      progress.setValue( totalCount++ );
+
+      QVariant value = model->getRow( i );
+      if ( !value.canConvert< QString >() )
+        continue;
+
+      allHeadwords.insert( value.toString() );
+    }
+
+    // continue to write the remaining headword
+    int nodeIndex  = model->getCurrentIndex();
+    auto headwords = model->getRemainRows( nodeIndex );
+    while ( !headwords.isEmpty() ) {
+      if ( progress.wasCanceled() )
+        break;
+      allHeadwords.unite( headwords );
+
+      totalCount += headwords.size();
+      progress.setValue( totalCount );
+
+      headwords = model->getRemainRows( nodeIndex );
+    }
+
+    sortedWords = allHeadwords.values();
+    sortedWords.sort();
+  }
+}
+
 void DictHeadwords::saveHeadersToFile()
 {
   QString exportPath;
@@ -295,59 +354,34 @@ void DictHeadwords::saveHeadersToFile()
   cfg.headwordsDialog.headwordsExportPath = QDir::toNativeSeparators(
                                               QFileInfo( fileName ).absoluteDir().absolutePath() );
 
-  QSet< QString > allHeadwords;
-  int headwordsNumber = model->totalCount();
+  const int headwordsNumber = model->totalCount();
 
-  //headwordsNumber*2  ,  read + write
   QProgressDialog progress( tr( "Export headwords..." ), tr( "Cancel" ), 0, headwordsNumber*2, this );
   progress.setWindowModality( Qt::WindowModal );
 
-  int totalCount=0;
-  for( int i = 0; i < headwordsNumber && i < model->wordCount(); ++i )
-  {
-    if( progress.wasCanceled() )
-      break;
-    progress.setValue( totalCount++ );
-
-    QVariant value = model->getRow( i );
-    if( !value.canConvert< QString >() )
-      continue;
-
-    allHeadwords.insert( value.toString() );
-  }
-
-  // continue to write the remaining headword
-  int nodeIndex  = model->getCurrentIndex();
-  auto headwords = model->getRemainRows( nodeIndex );
-  while( !headwords.isEmpty() )
-  {
-    if( progress.wasCanceled() )
-      break;
-    allHeadwords.unite(headwords);
-
-    totalCount += headwords.size();
-    progress.setValue( totalCount );
-
-    headwords = model->getRemainRows( nodeIndex );
-  }
-
-  qDebug()<<model->getCurrentIndex();
+  loadAllSortedWords( progress );
 
   // Write UTF-8 BOM
   QByteArray line;
   line.append( 0xEF ).append( 0xBB ).append( 0xBF );
   file.write( line );
 
-  QList< QString > sortedWords = allHeadwords.values();
-  sortedWords.sort();
+  QStringList filtered;
 
+  const QRegularExpression regExp = getFilterRegex();
+  if(regExp.isValid() && !regExp.pattern().isEmpty()){
+    filtered = sortedWords.filter( regExp );
+  }
+  else{
+    filtered = sortedWords;
+  }
+  auto currentValue = progress.value();
   // Write headwords
-  for( auto const & word : sortedWords )
+  for ( auto const & word : filtered )
   {
     if( progress.wasCanceled() )
       break;
-    progress.setValue( totalCount++ );
-
+    progress.setValue( currentValue++ );
     line = word.toUtf8();
 
     line.replace( '\n', ' ' );
@@ -361,6 +395,7 @@ void DictHeadwords::saveHeadersToFile()
 
   file.close();
 
+  progress.setValue( progress.maximum() );
   if( progress.wasCanceled() )
   {
     QMessageBox::warning( this, "GoldenDict", tr( "Export process is interrupted" ) );
@@ -370,7 +405,7 @@ void DictHeadwords::saveHeadersToFile()
   {
     //completed.
     progress.setValue(headwordsNumber*2);
-    progress.hide();
+    progress.close();
     QMessageBox::information( this, "GoldenDict", tr( "Export finished" ) );
   }
 }

src/ui/dictheadwords.hh

@@ -8,6 +8,7 @@
 #include <QStringListModel>
 #include <QSortFilterProxyModel>
 #include <QAction>
+#include <qprogressdialog.h>
 
 #include "config.hh"
 #include "ui_dictheadwords.h"
@@ -42,15 +43,19 @@ protected:
 
 private:
   Ui::DictHeadwords ui;
+  QStringList sortedWords;
+  QMutex mutex;
 private slots:
   void savePos();
   void filterChangedInternal();
+  QRegularExpression getFilterRegex();
   void filterChanged();
   void exportButtonClicked();
   void okButtonClicked();
   void itemClicked( const QModelIndex & index );
   void autoApplyStateChanged( int state );
   void showHeadwordsNumber();
+  void loadAllSortedWords( QProgressDialog & progress );
   virtual void reject();
 
 signals: