| // 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.components.inserted; |
| |
| import org.apache.tapestry.BaseComponent; |
| import org.apache.tapestry.IAsset; |
| import org.apache.tapestry.IRequestCycle; |
| import org.apache.tapestry.contrib.table.components.TableColumns; |
| import org.apache.tapestry.contrib.table.model.ITableColumn; |
| import org.apache.tapestry.contrib.table.model.ITableModel; |
| import org.apache.tapestry.contrib.table.model.ITableModelSource; |
| import org.apache.tapestry.contrib.table.model.ITableRendererListener; |
| import org.apache.tapestry.contrib.table.model.ITableSortingState; |
| import org.apache.tapestry.contrib.table.model.simple.SimpleTableColumn; |
| |
| /** |
| * A component that renders the default column header in a form. |
| * |
| * If the current column is sortable, it renders the header as a link. |
| * Clicking on the link causes the table to be sorted on that column. |
| * Clicking on the link again causes the sorting order to be reversed. |
| * |
| * This component renders links that cause the form to be submitted. |
| * This ensures that the updated data in the other form fields is preserved. |
| * |
| * @version $Id$ |
| * @author mindbridge |
| */ |
| public abstract class SimpleTableColumnFormComponent |
| extends BaseComponent |
| implements ITableRendererListener |
| { |
| |
| public abstract ITableColumn getTableColumn(); |
| public abstract void setTableColumn(ITableColumn objColumn); |
| |
| public abstract ITableModelSource getTableModelSource(); |
| public abstract void setTableModelSource(ITableModelSource objSource); |
| |
| public abstract String getSelectedColumnName(); |
| |
| /** |
| * @see org.apache.tapestry.contrib.table.model.ITableRendererListener#initializeRenderer(IRequestCycle, ITableModelSource, ITableColumn, Object) |
| */ |
| public void initializeRenderer( |
| IRequestCycle objCycle, |
| ITableModelSource objSource, |
| ITableColumn objColumn, |
| Object objRow) |
| { |
| setTableModelSource(objSource); |
| setTableColumn(objColumn); |
| } |
| |
| public ITableModel getTableModel() |
| { |
| return getTableModelSource().getTableModel(); |
| } |
| |
| public boolean getColumnSorted() |
| { |
| return getTableColumn().getSortable(); |
| } |
| |
| public String getDisplayName() |
| { |
| ITableColumn objColumn = getTableColumn(); |
| |
| if (objColumn instanceof SimpleTableColumn) { |
| SimpleTableColumn objSimpleColumn = (SimpleTableColumn) objColumn; |
| return objSimpleColumn.getDisplayName(); |
| } |
| return objColumn.getColumnName(); |
| } |
| |
| public boolean getIsSorted() |
| { |
| ITableSortingState objSortingState = getTableModel().getSortingState(); |
| String strSortColumn = objSortingState.getSortColumn(); |
| return getTableColumn().getColumnName().equals(strSortColumn); |
| } |
| |
| public IAsset getSortImage() |
| { |
| IAsset objImageAsset; |
| |
| IRequestCycle objCycle = getPage().getRequestCycle(); |
| ITableSortingState objSortingState = getTableModel().getSortingState(); |
| if (objSortingState.getSortOrder() |
| == ITableSortingState.SORT_ASCENDING) |
| { |
| objImageAsset = |
| (IAsset) objCycle.getAttribute( |
| TableColumns.TABLE_COLUMN_ARROW_UP_ATTRIBUTE); |
| if (objImageAsset == null) |
| objImageAsset = getAsset("sortUp"); |
| } |
| else |
| { |
| objImageAsset = |
| (IAsset) objCycle.getAttribute( |
| TableColumns.TABLE_COLUMN_ARROW_DOWN_ATTRIBUTE); |
| if (objImageAsset == null) |
| objImageAsset = getAsset("sortDown"); |
| } |
| |
| return objImageAsset; |
| } |
| |
| public void columnSelected(IRequestCycle objCycle) |
| { |
| String strColumnName = getSelectedColumnName(); |
| ITableSortingState objState = getTableModel().getSortingState(); |
| if (strColumnName.equals(objState.getSortColumn())) |
| objState.setSortColumn(strColumnName, !objState.getSortOrder()); |
| else |
| objState.setSortColumn( |
| strColumnName, |
| ITableSortingState.SORT_ASCENDING); |
| |
| // ensure that the change is saved |
| getTableModelSource().fireObservedStateChange(); |
| } |
| |
| } |