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| package org.apache.tapestry.contrib.table.model.simple; |
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| |
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| import java.util.Arrays; |
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| import java.util.Comparator; |
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| import java.util.Iterator; |
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| |
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| import org.apache.tapestry.contrib.table.model.CTableDataModelEvent; |
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| import org.apache.tapestry.contrib.table.model.IFullTableModel; |
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| import org.apache.tapestry.contrib.table.model.ITableColumn; |
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| import org.apache.tapestry.contrib.table.model.ITableColumnModel; |
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| import org.apache.tapestry.contrib.table.model.ITableDataModel; |
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| import org.apache.tapestry.contrib.table.model.ITableDataModelListener; |
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| import org.apache.tapestry.contrib.table.model.ITableSortingState; |
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| import org.apache.tapestry.contrib.table.model.common.AbstractTableModel; |
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| import org.apache.tapestry.contrib.table.model.common.ArrayIterator; |
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| import org.apache.tapestry.contrib.table.model.common.ReverseComparator; |
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| public class SimpleTableModel extends AbstractTableModel |
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| implements IFullTableModel, ITableDataModelListener |
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| { |
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| private static final long serialVersionUID = 1L; |
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| |
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| private ITableDataModel m_objDataModel = null; |
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| private Object[] m_arrRows = null; |
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| private ITableColumnModel m_objColumnModel = null; |
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| |
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| private SimpleTableSortingState m_objLastSortingState; |
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| public SimpleTableModel(Object[] arrData, ITableColumn[] arrColumns)
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| { |
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| this(new SimpleListTableDataModel(arrData), new SimpleTableColumnModel(arrColumns));
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| } |
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| public SimpleTableModel(Object[] arrData, ITableColumnModel objColumnModel)
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| { |
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| this(new SimpleListTableDataModel(arrData), objColumnModel);
|
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| } |
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| |
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| public SimpleTableModel(ITableDataModel objDataModel, ITableColumnModel objColumnModel)
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| { |
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| this(objDataModel, objColumnModel, new SimpleTableState());
|
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| } |
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| public SimpleTableModel(ITableDataModel objDataModel, ITableColumnModel objColumnModel, SimpleTableState objState)
|
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| { |
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| super(objState);
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| m_arrRows = null;
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| m_objColumnModel = objColumnModel;
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| m_objLastSortingState = new SimpleTableSortingState();
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| setDataModel(objDataModel);
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| } |
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| public ITableColumnModel getColumnModel()
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| { |
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| return m_objColumnModel;
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| } |
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| public Iterator getCurrentPageRows()
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| { |
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| sortRows();
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| int nPageSize = getPagingState().getPageSize();
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| if (nPageSize <= 0)
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| return new ArrayIterator(m_arrRows);
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| int nCurrentPage = getPagingState().getCurrentPage();
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| int nFrom = nCurrentPage * nPageSize;
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| int nTo = (nCurrentPage + 1) * nPageSize;
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| return new ArrayIterator(m_arrRows, nFrom, nTo);
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| } |
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| public int getRowCount()
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| { |
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| updateRows();
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| return m_arrRows.length;
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| } |
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| private void updateRows()
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| { |
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| if (m_arrRows != null)
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| return;
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| m_objLastSortingState = new SimpleTableSortingState();
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| int nRowCount = m_objDataModel.getRowCount();
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| Object[] arrRows = new Object[nRowCount];
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| int i = 0;
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| for (Iterator it = m_objDataModel.getRows(); it.hasNext();)
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| arrRows[i++] = it.next();
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| m_arrRows = arrRows;
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| } |
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| protected void sortRows()
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| { |
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| updateRows();
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| ITableSortingState objSortingState = getSortingState();
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| String strSortColumn = objSortingState.getSortColumn();
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| if (strSortColumn == null)
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| return;
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| boolean bSortOrder = objSortingState.getSortOrder();
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| if (strSortColumn.equals(m_objLastSortingState.getSortColumn())
|
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| && m_objLastSortingState.getSortOrder() == bSortOrder) |
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| return;
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| |
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| ITableColumn objColumn = getColumnModel().getColumn(strSortColumn);
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| if (objColumn == null || !objColumn.getSortable())
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| return;
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| Comparator objCmp = objColumn.getComparator();
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| if (objCmp == null)
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| return;
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| if (bSortOrder == ITableSortingState.SORT_DESCENDING)
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| objCmp = new ReverseComparator(objCmp);
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| Arrays.sort(m_arrRows, objCmp);
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| m_objLastSortingState.setSortColumn(strSortColumn, bSortOrder);
|
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| } |
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| public void tableDataChanged(CTableDataModelEvent objEvent)
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| { |
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| m_arrRows = null;
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| } |
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| public ITableDataModel getDataModel()
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| { |
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| return m_objDataModel;
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| } |
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| public void setDataModel(ITableDataModel dataModel)
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| { |
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| if (m_objDataModel != null)
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| m_objDataModel.removeTableDataModelListener(this);
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| m_objDataModel = dataModel;
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| m_objDataModel.addTableDataModelListener(this);
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| m_arrRows = null;
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| } |
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| public Iterator getRows() {
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| updateRows();
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| return new ArrayIterator(m_arrRows);
|
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| } |
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| } |