Implemented tile deletion.

--HG--
branch : gsoc2014-dfighter

code/studio/src/plugins/tile_editor/tile_editor_main_window.cpp

@@ -215,6 +215,7 @@ void TileEditorMainWindow::onActionAddTile(bool triggered)
 
 void TileEditorMainWindow::onActionDeleteTile(bool triggered)
 {
+	onActionDeleteTile(m_ui->tileViewTabWidget->currentIndex());
 }
 
 void TileEditorMainWindow::onActionReplaceImage(bool triggered)
@@ -585,6 +586,32 @@ void TileEditorMainWindow::onActionAddTile(int tabId)
 	lv->setCurrentIndex( lv->model()->index( 0, 0, rootIdx ) );
 }
 
+void TileEditorMainWindow::onActionDeleteTile( int tabId )
+{
+	QListView *lv = NULL;
+	switch( tabId )
+	{
+	case TAB_128: lv = m_ui->listView128; break;
+	case TAB_256: lv = m_ui->listView256; break;
+	}
+
+	QModelIndex idx = lv->currentIndex();
+	if( !idx.isValid() )
+	{
+		QMessageBox::information( this,
+									tr( "Deleting a tile" ),
+									tr( "You need to select a tile to delete is!" ) );
+		return;
+	}
+
+	int row = idx.row();
+
+	QModelIndex parent = idx.parent();
+	lv->model()->removeRow( row, parent );
+
+	//lv->reset();
+}
+
 TileModel* TileEditorMainWindow::createTileModel()
 {
 	QStringList headers;

code/studio/src/plugins/tile_editor/tile_editor_main_window.h

@@ -69,6 +69,7 @@ private Q_SLOTS:
 
 private:
 	void onActionAddTile(int tabId);
+	void onActionDeleteTile(int tabId);
 	TileModel* createTileModel();
 
 	Ui::TileEditorMainWindow *m_ui;

code/studio/src/plugins/tile_editor/tile_item.h

@@ -43,7 +43,7 @@ public:
 	virtual QVariant data(int column, int role) const;
 
 	bool insertChildren(int position, int count, int columns);
-	bool removeChildren(int position, int count);
+	virtual bool removeChildren(int position, int count);
 	bool insertColumns(int position, int columns);
 
 	int row() const;

code/studio/src/plugins/tile_editor/tile_model.cpp

@@ -142,13 +142,23 @@ void TileModel::appendRow(Node *item)
 
 bool TileModel::removeRows( int row, int count, const QModelIndex &parent )
 {
-	int c = rootItem->childCount();
+	Node *parentNode = NULL;
+
+	if( !parent.isValid() )
+		parentNode = rootItem;
+	else
+		parentNode = getItem( parent );
+
+	if( parentNode == NULL )
+		return false;
+
+	int c = parentNode->childCount();
 	if( row + count > c )
 		return false;
 
-	beginRemoveRows( QModelIndex(), row, row + count - 1 );
+	beginRemoveRows( parent, row, row + count - 1 );
 
-	bool ok = rootItem->removeChildren( row, count );
+	bool ok = parentNode->removeChildren( row, count );
 	
 	endRemoveRows();