| // Copyright 2004 The Apache Software Foundation |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package org.apache.tapestry.contrib.table.model.common; |
| |
| import java.io.Serializable; |
| |
| import org.apache.tapestry.contrib.table.model.ITableModel; |
| import org.apache.tapestry.contrib.table.model.ITablePagingState; |
| import org.apache.tapestry.contrib.table.model.ITableSortingState; |
| import org.apache.tapestry.contrib.table.model.simple.SimpleTableState; |
| |
| /** |
| * A base table model that implements the handling of the model state. |
| * Used by most standard ITableModel implementations. |
| * |
| * @version $Id$ |
| * @author mindbridge |
| */ |
| public abstract class AbstractTableModel implements ITableModel, Serializable |
| { |
| private SimpleTableState m_objTableState; |
| |
| protected AbstractTableModel() |
| { |
| this(new SimpleTableState()); |
| } |
| |
| protected AbstractTableModel(SimpleTableState objTableState) |
| { |
| m_objTableState = objTableState; |
| } |
| |
| /** |
| * @see org.apache.tapestry.contrib.table.model.ITableModel#getPagingState() |
| */ |
| public ITablePagingState getPagingState() |
| { |
| return getState().getPagingState(); |
| } |
| |
| /** |
| * @see org.apache.tapestry.contrib.table.model.ITableModel#getSortingState() |
| */ |
| public ITableSortingState getSortingState() |
| { |
| return getState().getSortingState(); |
| } |
| |
| /** |
| * Returns the tableState. |
| * @return SimpleTableState |
| */ |
| public SimpleTableState getState() |
| { |
| return m_objTableState; |
| } |
| |
| protected abstract int getRowCount(); |
| |
| public int getPageCount() |
| { |
| int nRowCount = getRowCount(); |
| if (nRowCount == 0) |
| return 1; |
| |
| int nPageSize = getPagingState().getPageSize(); |
| if (nPageSize <= 0) |
| return 1; |
| |
| return (nRowCount - 1) / nPageSize + 1; |
| } |
| |
| } |