1 files changed, 182 insertions, 0 deletions
diff --git a/src/widgets/categorycombobox.cpp b/src/widgets/categorycombobox.cpp
new file mode 100644
index 0000000..7935cbb
--- /dev/null
+++ b/src/widgets/categorycombobox.cpp
@@ -0,0 +1,182 @@
+/***************************************************************************
+*   Copyright (C) 2003-2004 by                                                 *
+*   Unai Garro ([email protected])                             *
+*   Cyril Bosselut ([email protected])                               *
+*   Jason Kivlighn ([email protected])                                  *
+*                                                                         *
+*   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) any later version.                                   *
+***************************************************************************/
+
+#include "categorycombobox.h"
+
+#include <tqlistbox.h>
+
+#include <tdelocale.h>
+#include <tdeconfig.h>
+#include <tdeglobal.h>
+
+#include "backends/recipedb.h"
+#include "backends/progressinterface.h"
+#include "datablocks/elementlist.h"
+#include "datablocks/categorytree.h"
+
+CategoryComboBox::CategoryComboBox( TQWidget *parent, RecipeDB *db ) : KComboBox( parent ),
+		database( db ),
+		m_offset(0)
+{
+	connect( database, TQ_SIGNAL( categoryCreated( const Element &, int ) ), TQ_SLOT( createCategory( const Element &, int ) ) );
+	connect( database, TQ_SIGNAL( categoryRemoved( int ) ), TQ_SLOT( removeCategory( int ) ) );
+	connect( database, TQ_SIGNAL( categoryModified( const Element & ) ), TQ_SLOT( modifyCategory( const Element & ) ) );
+	connect( database, TQ_SIGNAL( categoriesMerged( int, int ) ), TQ_SLOT( mergeCategories( int, int ) ) );
+
+    // Insert default "All Categories" (row 0, which will be translated to -1 as category in the filtering process)
+    // the rest of the items are loaded when needed in order to significantly speed up startup
+    insertItem( i18n( "All Categories" ) );
+}
+
+void CategoryComboBox::popup()
+{
+	if ( count() == 1 )
+		reload();
+	KComboBox::popup();
+}
+
+void CategoryComboBox::reload()
+{
+	TQString remember_cat_filter = currentText();
+
+	TDEConfig * config = TDEGlobal::config();config->setGroup( "Performance" );
+	int limit = config->readNumEntry( "CategoryLimit", -1 );
+
+	//ProgressInterface pi(this);
+	//pi.listenOn(database);
+
+	CategoryTree categoryList;
+	database->loadCategories( &categoryList, limit, m_offset, -1 );
+
+	clear();
+	categoryComboRows.clear();
+
+	// Insert default "All Categories" (row 0, which will be translated to -1 as category in the filtering process)
+	insertItem( i18n( "All Categories" ) );
+
+	//Now load the categories
+	int row = 1;
+	loadCategories(&categoryList,row);
+
+	if ( listBox() ->findItem( remember_cat_filter, TQt::ExactMatch ) ) {
+		setCurrentText( remember_cat_filter );
+	}
+}
+
+void CategoryComboBox::loadCategories( CategoryTree *categoryTree, int &row )
+{
+	for ( CategoryTree * child_it = categoryTree->firstChild(); child_it; child_it = child_it->nextSibling() ) {
+		insertItem( child_it->category.name );
+		categoryComboRows.insert( row, child_it->category.id ); // store category id's in the combobox position to obtain the category id later
+		row++;
+		loadCategories( child_it, row );
+	}
+}
+
+void CategoryComboBox::loadNextGroup()
+{
+	TDEConfig * config = TDEGlobal::config();config->setGroup( "Performance" );
+	int limit = config->readNumEntry( "CategoryLimit", -1 );
+
+	m_offset += limit;
+
+	reload();
+}
+
+void CategoryComboBox::loadPrevGroup()
+{
+	TDEConfig * config = TDEGlobal::config();config->setGroup( "Performance" );
+	int limit = config->readNumEntry( "CategoryLimit", -1 );
+
+	m_offset -= limit;
+
+	reload();
+}
+
+int CategoryComboBox::id( int row )
+{
+	if ( row )
+		return categoryComboRows[ row ];
+	else
+		return -1; // No category filtering
+}
+
+void CategoryComboBox::createCategory( const Element &element, int /*parent_id*/ )
+{
+	int row = findInsertionPoint( element.name );
+
+	insertItem( element.name, row );
+
+	//now update the map by pushing everything after this item down
+	TQMap<int, int> new_map;
+	for ( TQMap<int, int>::iterator it = categoryComboRows.begin(); it != categoryComboRows.end(); ++it ) {
+		if ( it.key() >= row ) {
+			new_map.insert( it.key() + 1, it.data() );
+		}
+		else
+			new_map.insert( it.key(), it.data() );
+	}
+	categoryComboRows = new_map;
+	categoryComboRows.insert( row, element.id );
+}
+
+void CategoryComboBox::removeCategory( int id )
+{
+	int row = -1;
+	for ( TQMap<int, int>::iterator it = categoryComboRows.begin(); it != categoryComboRows.end(); ++it ) {
+		if ( it.data() == id ) {
+			row = it.key();
+			removeItem( row );
+			categoryComboRows.remove( it );
+			break;
+		}
+	}
+
+	if ( row == -1 )
+		return ;
+
+	//now update the map by pushing everything after this item up
+	TQMap<int, int> new_map;
+	for ( TQMap<int, int>::iterator it = categoryComboRows.begin(); it != categoryComboRows.end(); ++it ) {
+		if ( it.key() > row ) {
+			new_map.insert( it.key() - 1, it.data() );
+		}
+		else
+			new_map.insert( it.key(), it.data() );
+	}
+	categoryComboRows = new_map;
+}
+
+void CategoryComboBox::modifyCategory( const Element &element )
+{
+	for ( TQMap<int, int>::const_iterator it = categoryComboRows.begin(); it != categoryComboRows.end(); ++it ) {
+		if ( it.data() == element.id )
+			changeItem( element.name, it.key() );
+	}
+}
+
+void CategoryComboBox::mergeCategories( int /*to_id*/, int from_id )
+{
+	removeCategory( from_id );
+}
+
+int CategoryComboBox::findInsertionPoint( const TQString &name )
+{
+	for ( int i = 1; i < count(); i++ ) {
+		if ( TQString::localeAwareCompare( name, text( i ) ) < 0 )
+			return i;
+	}
+
+	return count();
+}
+
+#include "categorycombobox.moc"