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| package org.apache.tapestry.contrib.table.components; |
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| import java.io.Serializable; |
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| import java.util.ArrayList; |
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| import java.util.Collection; |
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| import java.util.Iterator; |
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| import java.util.List; |
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| |
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| import org.apache.hivemind.ApplicationRuntimeException; |
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| import org.apache.tapestry.BaseComponent; |
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| import org.apache.tapestry.IComponent; |
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| import org.apache.tapestry.IMarkupWriter; |
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| import org.apache.tapestry.IRequestCycle; |
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| import org.apache.tapestry.contrib.table.model.IAdvancedTableColumnSource; |
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| import org.apache.tapestry.contrib.table.model.IBasicTableModel; |
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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.ITableModel; |
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| import org.apache.tapestry.contrib.table.model.ITableModelSource; |
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| import org.apache.tapestry.contrib.table.model.ITablePagingState; |
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| import org.apache.tapestry.contrib.table.model.ITableSessionStateManager; |
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| import org.apache.tapestry.contrib.table.model.ITableSessionStoreManager; |
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| import org.apache.tapestry.contrib.table.model.common.BasicTableModelWrap; |
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| import org.apache.tapestry.contrib.table.model.simple.SimpleListTableDataModel; |
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| import org.apache.tapestry.contrib.table.model.simple.SimpleTableColumnModel; |
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| import org.apache.tapestry.contrib.table.model.simple.SimpleTableModel; |
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| import org.apache.tapestry.contrib.table.model.simple.SimpleTableState; |
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| import org.apache.tapestry.event.PageBeginRenderListener; |
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| import org.apache.tapestry.event.PageDetachListener; |
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| import org.apache.tapestry.event.PageEvent; |
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| public abstract class TableView extends BaseComponent implements PageDetachListener, |
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| PageBeginRenderListener, ITableModelSource |
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| { |
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| public abstract TableColumnModelSource getModelSource(); |
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| public abstract IAdvancedTableColumnSource getColumnSource(); |
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| private ITableSessionStateManager m_objDefaultSessionStateManager = null; |
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| private ITableColumnModel m_objColumnModel = null; |
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| private ITableModel m_objTableModel; |
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| private ITableModel m_objCachedTableModelValue; |
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| public abstract ITableModel getTableModelValue(); |
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| public abstract Object getSource(); |
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| public abstract Object getColumns(); |
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| public abstract int getInitialPage(); |
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| public abstract String getInitialSortColumn(); |
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| public abstract boolean getInitialSortOrder(); |
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| public abstract ITableSessionStateManager getTableSessionStateManager(); |
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| public abstract ITableSessionStoreManager getTableSessionStoreManager(); |
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| public abstract IComponent getColumnSettingsContainer(); |
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| public abstract int getPageSize(); |
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| public abstract String getPersist(); |
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| public abstract Serializable getSessionState(); |
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| public abstract void setSessionState(Serializable sessionState); |
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| public abstract Serializable getClientState(); |
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| public abstract void setClientState(Serializable sessionState); |
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| public abstract Serializable getClientAppState(); |
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| public abstract void setClientAppState(Serializable sessionState); |
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| public TableView()
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| { |
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| initialize();
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| } |
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| public void pageDetached(PageEvent objEvent)
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| { |
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| initialize();
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| } |
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| private void initialize()
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| { |
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| m_objTableModel = null;
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| m_objCachedTableModelValue = null;
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| } |
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| public void reset()
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| { |
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| initialize();
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| storeSessionState(null);
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| } |
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| |
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| public ITableModel getCachedTableModelValue()
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| { |
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| if (m_objCachedTableModelValue == null)
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| m_objCachedTableModelValue = getTableModelValue();
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| return m_objCachedTableModelValue;
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| } |
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| public ITableModel getTableModel()
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| { |
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| if (m_objTableModel == null)
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| { |
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| Serializable objState = loadSessionState();
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| ITableSessionStateManager objStateManager = getTableSessionStateManager();
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| m_objTableModel = objStateManager.recreateTableModel(objState);
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| } |
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| if (m_objTableModel == null)
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| m_objTableModel = getCachedTableModelValue();
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| if (m_objTableModel == null)
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| m_objTableModel = generateTableModel(null);
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| if (m_objTableModel == null)
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| throw new ApplicationRuntimeException(TableMessages.missingTableModel(this));
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| return m_objTableModel;
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| } |
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| protected ITableModel generateTableModel(SimpleTableState objState)
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| { |
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| if (objState == null)
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| { |
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| objState = new SimpleTableState();
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| objState.getSortingState().setSortColumn(getInitialSortColumn(), getInitialSortOrder());
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| objState.getPagingState().setCurrentPage(getInitialPage());
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| } |
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| if (isParameterBound("pageSize"))
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| objState.getPagingState().setPageSize(getPageSize());
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| ITableColumnModel objColumnModel = getTableColumnModel();
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| if (objColumnModel == null)
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| return null;
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| |
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| Object objSourceValue = getSource();
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| if (objSourceValue == null)
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| return null;
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| if (objSourceValue instanceof IBasicTableModel)
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| return new BasicTableModelWrap((IBasicTableModel) objSourceValue, objColumnModel,
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| objState); |
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| ITableDataModel objDataModel = null;
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| if (objSourceValue instanceof Object[])
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| objDataModel = new SimpleListTableDataModel((Object[]) objSourceValue);
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| else if (objSourceValue instanceof List)
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| objDataModel = new SimpleListTableDataModel((List) objSourceValue);
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| else if (objSourceValue instanceof Collection)
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| objDataModel = new SimpleListTableDataModel((Collection) objSourceValue);
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| else if (objSourceValue instanceof Iterator)
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| objDataModel = new SimpleListTableDataModel((Iterator) objSourceValue);
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| if (objDataModel == null)
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| throw new ApplicationRuntimeException(TableMessages.invalidTableSource(
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| this, |
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| objSourceValue)); |
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| return new SimpleTableModel(objDataModel, objColumnModel, objState);
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| } |
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| protected ITableColumnModel getTableColumnModel()
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| { |
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| Object objColumns = getColumns();
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| if (objColumns == null)
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| return null;
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| if (objColumns instanceof ITableColumnModel)
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| { |
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| return (ITableColumnModel) objColumns;
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| } |
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| if (objColumns instanceof Iterator)
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| { |
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| Iterator objColumnsIterator = (Iterator) objColumns;
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| List arrColumnsList = new ArrayList();
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| addAll(arrColumnsList, objColumnsIterator);
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| objColumns = arrColumnsList;
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| } |
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| if (objColumns instanceof List)
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| { |
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| List arrColumnsList = (List) objColumns;
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| int nColumnsNumber = arrColumnsList.size();
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| for (int i = 0; i < nColumnsNumber; i++)
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| { |
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| if (!(arrColumnsList.get(i) instanceof ITableColumn))
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| throw new ApplicationRuntimeException(TableMessages.columnsOnlyPlease(this));
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| } |
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| return new SimpleTableColumnModel(arrColumnsList);
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| } |
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| if (objColumns instanceof ITableColumn[])
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| { |
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| return new SimpleTableColumnModel((ITableColumn[]) objColumns);
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| } |
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| if (objColumns instanceof String)
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| { |
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| String strColumns = (String) objColumns;
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| if (getBinding("columns").isInvariant())
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| { |
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| if (m_objColumnModel == null)
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| m_objColumnModel = generateTableColumnModel(strColumns);
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| return m_objColumnModel;
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| } |
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| return generateTableColumnModel(strColumns);
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| } |
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| throw new ApplicationRuntimeException(TableMessages.invalidTableColumns(this, objColumns));
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| } |
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| private void addAll(List arrColumnsList, Iterator objColumnsIterator)
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| { |
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| while (objColumnsIterator.hasNext())
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| arrColumnsList.add(objColumnsIterator.next());
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| } |
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| protected ITableColumnModel generateTableColumnModel(String strDesc)
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| { |
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| IComponent objColumnSettingsContainer = getColumnSettingsContainer();
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| IAdvancedTableColumnSource objColumnSource = getColumnSource();
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| return getModelSource().generateTableColumnModel(objColumnSource, strDesc, this, objColumnSettingsContainer);
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| } |
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| public ITableSessionStateManager getDefaultTableSessionStateManager()
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| { |
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| if (m_objDefaultSessionStateManager == null)
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| m_objDefaultSessionStateManager = new TableViewSessionStateManager(this);
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| return m_objDefaultSessionStateManager;
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| } |
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| public void fireObservedStateChange()
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| { |
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| saveSessionState();
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| } |
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| public void pageBeginRender(PageEvent event)
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| { |
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| if (m_objTableModel != null)
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| saveSessionState();
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| } |
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| protected void saveSessionState()
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| { |
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| ITableModel objModel = getTableModel();
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| Serializable objState = getTableSessionStateManager().getSessionState(objModel);
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| storeSessionState(objState);
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| } |
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| protected Serializable loadSessionState()
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| { |
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| ITableSessionStoreManager objManager = getTableSessionStoreManager();
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| if (objManager != null)
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| return objManager.loadState(getPage().getRequestCycle());
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| String strPersist = getPersist();
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| if (strPersist.equals("client") || strPersist.equals("client:page"))
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| return getClientState();
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| else if (strPersist.equals("client:app"))
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| return getClientAppState();
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| else |
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| return getSessionState();
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| } |
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| protected void storeSessionState(Serializable objState)
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| { |
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| ITableSessionStoreManager objManager = getTableSessionStoreManager();
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| if (objManager != null)
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| objManager.saveState(getPage().getRequestCycle(), objState);
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| else { |
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| String strPersist = getPersist();
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| if (strPersist.equals("client") || strPersist.equals("client:page"))
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| setClientState(objState);
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| else if (strPersist.equals("client:app"))
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| setClientAppState(objState);
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| else |
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| setSessionState(objState);
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| } |
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| } |
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| protected void validateValues()
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| { |
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| ITableModel objModel = getTableModel();
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| ITablePagingState objPagingState = objModel.getPagingState();
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| int nCurrentPage = objPagingState.getCurrentPage();
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| int nPageCount = objModel.getPageCount();
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| if (nCurrentPage >= nPageCount)
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| { |
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| nCurrentPage = nPageCount - 1;
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| objPagingState.setCurrentPage(nCurrentPage);
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| } |
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| if (nCurrentPage < 0)
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| { |
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| nCurrentPage = 0;
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| objPagingState.setCurrentPage(nCurrentPage);
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| } |
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| } |
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| protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle)
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| { |
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| Object objOldValue = cycle.getAttribute(ITableModelSource.TABLE_MODEL_SOURCE_ATTRIBUTE);
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| cycle.setAttribute(ITableModelSource.TABLE_MODEL_SOURCE_ATTRIBUTE, this);
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| |
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| initialize();
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| validateValues();
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| super.renderComponent(writer, cycle);
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| cycle.setAttribute(ITableModelSource.TABLE_MODEL_SOURCE_ATTRIBUTE, objOldValue);
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| } |
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| |
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| } |