1 files changed, 188 insertions, 0 deletions
diff --git a/src/widgets/ingredientcombobox.cpp b/src/widgets/ingredientcombobox.cpp
new file mode 100644
index 0000000..0e036b0
--- /dev/null
+++ b/src/widgets/ingredientcombobox.cpp
@@ -0,0 +1,188 @@
+/***************************************************************************
+*   Copyright (C) 2005 by                                                 *
+*   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 "ingredientcombobox.h"
+
+#include <tqlistbox.h>
+#include <tqtimer.h>
+
+#include <kdebug.h>
+#include <tdeapplication.h>
+#include <tdeglobal.h>
+#include <tdeconfig.h>
+
+#include "backends/recipedb.h"
+#include "datablocks/elementlist.h"
+
+IngredientComboBox::IngredientComboBox( bool b, TQWidget *parent, RecipeDB *db, const TQString &specialItem ) : KComboBox( b, parent ),
+		database( db ), loading_at(0), load_timer(new TQTimer(this)), m_specialItem(specialItem)
+{
+	connect( load_timer, TQ_SIGNAL(timeout()), TQ_SLOT(loadMore()) );
+	completionObject()->setIgnoreCase(true);
+}
+
+void IngredientComboBox::reload()
+{
+	TQString remember_text;
+	if ( editable() )
+		remember_text = lineEdit()->text();
+
+	ElementList ingredientList;
+	database->loadIngredients( &ingredientList );
+
+	clear();
+	ingredientComboRows.clear();
+
+	int row = 0;
+	if ( !m_specialItem.isNull() ) {
+		insertItem(m_specialItem);
+		ingredientComboRows.insert( row, -1 );
+		row++;
+	}
+	for ( ElementList::const_iterator it = ingredientList.begin(); it != ingredientList.end(); ++it, ++row ) {
+		insertItem((*it).name);
+		completionObject()->addItem((*it).name);
+		ingredientComboRows.insert( row, (*it).id );
+	}
+
+	if ( editable() )
+		setEditText( remember_text );
+
+	database->disconnect( this );
+	connect( database, TQ_SIGNAL( ingredientCreated( const Element & ) ), TQ_SLOT( createIngredient( const Element & ) ) );
+	connect( database, TQ_SIGNAL( ingredientRemoved( int ) ), TQ_SLOT( removeIngredient( int ) ) );
+}
+
+void IngredientComboBox::loadMore()
+{
+	if ( loading_at >= ing_count-1 ) {
+		endLoad();
+		return;
+	}
+
+	ElementList ingredientList;
+	database->loadIngredients( &ingredientList, load_limit, loading_at );
+
+	for ( ElementList::const_iterator it = ingredientList.begin(); it != ingredientList.end(); ++it, ++loading_at ) {
+		insertItem((*it).name);
+		completionObject()->addItem((*it).name);
+		ingredientComboRows.insert( loading_at, (*it).id );
+	}
+}
+
+void IngredientComboBox::startLoad()
+{
+	//don't receive ingredient created/removed events from the database
+	database->disconnect( this );
+
+	TDEConfig * config = TDEGlobal::config(); config->setGroup( "Performance" );
+	load_limit = config->readNumEntry( "Limit", -1 );
+	if ( load_limit == -1 ) {
+		reload();
+		endLoad();
+	}
+	else {
+		loading_at = 0;
+		ing_count = database->ingredientCount();
+
+		load_timer->start( 0, false );
+	}
+}
+
+void IngredientComboBox::endLoad()
+{
+	load_timer->stop();
+
+	//now we're ready to receive ingredient created/removed events from the database
+	connect( database, TQ_SIGNAL( ingredientCreated( const Element & ) ), TQ_SLOT( createIngredient( const Element & ) ) );
+	connect( database, TQ_SIGNAL( ingredientRemoved( int ) ), TQ_SLOT( removeIngredient( int ) ) );
+}
+
+int IngredientComboBox::id( int row )
+{
+	return ingredientComboRows[ row ];
+}
+
+int IngredientComboBox::id( const TQString &ing )
+{
+	for ( int i = 0; i < count(); i++ ) {
+		if ( ing == text( i ) )
+			return id(i);
+	}
+	kdDebug()<<"Warning: couldn't find the ID for "<<ing<<endl;
+	return -1;
+}
+
+void IngredientComboBox::createIngredient( const Element &element )
+{
+	int row = findInsertionPoint( element.name );
+
+	TQString remember_text;
+	if ( editable() )
+		remember_text = lineEdit()->text();
+
+	insertItem( element.name, row );
+	completionObject()->addItem(element.name);
+
+	if ( editable() )
+		lineEdit()->setText( remember_text );
+
+	//now update the map by pushing everything after this item down
+	TQMap<int, int> new_map;
+	for ( TQMap<int, int>::iterator it = ingredientComboRows.begin(); it != ingredientComboRows.end(); ++it ) {
+		if ( it.key() >= row ) {
+			new_map.insert( it.key() + 1, it.data() );
+		}
+		else
+			new_map.insert( it.key(), it.data() );
+	}
+	ingredientComboRows = new_map;
+	ingredientComboRows.insert( row, element.id );
+}
+
+void IngredientComboBox::removeIngredient( int id )
+{
+	int row = -1;
+	for ( TQMap<int, int>::iterator it = ingredientComboRows.begin(); it != ingredientComboRows.end(); ++it ) {
+		if ( it.data() == id ) {
+			row = it.key();
+			completionObject()->removeItem( text(row) );
+			removeItem( row );
+			ingredientComboRows.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 = ingredientComboRows.begin(); it != ingredientComboRows.end(); ++it ) {
+		if ( it.key() > row ) {
+			new_map.insert( it.key() - 1, it.data() );
+		}
+		else
+			new_map.insert( it.key(), it.data() );
+	}
+	ingredientComboRows = new_map;
+}
+
+int IngredientComboBox::findInsertionPoint( const TQString &name )
+{
+	for ( int i = 0; i < count(); i++ ) {
+		if ( TQString::localeAwareCompare( name, text( i ) ) < 0 )
+			return i;
+	}
+
+	return count();
+}
+
+#include "ingredientcombobox.moc"