| // 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; |
| |
| import java.text.MessageFormat; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.ResourceBundle; |
| import java.util.StringTokenizer; |
| |
| import org.apache.tapestry.ApplicationRuntimeException; |
| import org.apache.tapestry.IComponent; |
| import org.apache.tapestry.IResourceResolver; |
| import org.apache.tapestry.contrib.table.model.ITableColumn; |
| import org.apache.tapestry.contrib.table.model.ITableColumnModel; |
| import org.apache.tapestry.contrib.table.model.ognl.ExpressionTableColumn; |
| import org.apache.tapestry.contrib.table.model.simple.SimpleTableColumn; |
| import org.apache.tapestry.contrib.table.model.simple.SimpleTableColumnModel; |
| import org.apache.tapestry.util.prop.OgnlUtils; |
| |
| /** |
| * A placeholder for a static methods related to the Table component |
| * |
| * @since 3.0 |
| * @version $Id$ |
| * @author Mindbridge |
| **/ |
| public class TableUtils |
| { |
| |
| /** |
| * Contains strings loaded from TableStrings.properties. |
| * |
| **/ |
| |
| private static ResourceBundle s_objStrings = null; |
| |
| /** |
| * Gets a string from the TableStrings resource bundle. |
| * |
| **/ |
| |
| public static String format(String key, Object[] args) |
| { |
| synchronized (TableUtils.class) { |
| if (s_objStrings == null) |
| s_objStrings = ResourceBundle.getBundle("org.apache.tapestry.contrib.table.components.TableStrings"); |
| } |
| |
| String pattern = s_objStrings.getString(key); |
| |
| if (args == null) |
| return pattern; |
| |
| return MessageFormat.format(pattern, args); |
| } |
| |
| /** |
| * Convienience method for invoking {@link #format(String, Object[])}. |
| **/ |
| |
| public static String getMessage(String key) |
| { |
| return format(key, null); |
| } |
| |
| /** |
| * Convienience method for invoking {@link #format(String, Object[])}. |
| **/ |
| |
| public static String format(String key, Object arg) |
| { |
| return format(key, new Object[] { arg }); |
| } |
| |
| /** |
| * Convienience method for invoking {@link #format(String, Object[])}. |
| **/ |
| |
| public static String format(String key, Object arg1, Object arg2) |
| { |
| return format(key, new Object[] { arg1, arg2 }); |
| } |
| |
| /** |
| * Convienience method for invoking {@link #format(String, Object[])}. |
| **/ |
| |
| public static String format(String key, Object arg1, Object arg2, Object arg3) |
| { |
| return format(key, new Object[] { arg1, arg2, arg3 }); |
| } |
| |
| /** |
| * Generate a table column model out of the description string provided. |
| * Entries in the description string are separated by commas. |
| * Each column entry is of the format name, name:expression, |
| * or name:displayName:expression. |
| * An entry prefixed with ! represents a non-sortable column. |
| * If the whole description string is prefixed with *, it represents |
| * columns to be included in a Form. |
| * |
| * @param strDesc the description of the column model to be generated |
| * @param objComponent the component ordering the generation |
| * @param objColumnSettingsContainer the component containing the column settings |
| * @return a table column model based on the provided parameters |
| */ |
| public static ITableColumnModel generateTableColumnModel(String strDesc, IComponent objComponent, IComponent objColumnSettingsContainer) |
| { |
| if (strDesc == null) |
| return null; |
| |
| List arrColumns = new ArrayList(); |
| |
| boolean bFormColumns = false; |
| while (strDesc.startsWith("*")) |
| { |
| strDesc = strDesc.substring(1); |
| bFormColumns = true; |
| } |
| |
| StringTokenizer objTokenizer = new StringTokenizer(strDesc, ","); |
| while (objTokenizer.hasMoreTokens()) |
| { |
| String strToken = objTokenizer.nextToken().trim(); |
| |
| if (strToken.startsWith("=")) |
| { |
| String strColumnExpression = strToken.substring(1); |
| IResourceResolver objResolver = objColumnSettingsContainer.getPage().getEngine().getResourceResolver(); |
| |
| Object objColumn = |
| OgnlUtils.get(strColumnExpression, objResolver, objColumnSettingsContainer); |
| if (!(objColumn instanceof ITableColumn)) |
| throw new ApplicationRuntimeException( |
| format("not-a-column", objComponent.getExtendedId(), strColumnExpression)); |
| |
| arrColumns.add(objColumn); |
| continue; |
| } |
| |
| boolean bSortable = true; |
| if (strToken.startsWith("!")) |
| { |
| strToken = strToken.substring(1); |
| bSortable = false; |
| } |
| |
| StringTokenizer objColumnTokenizer = new StringTokenizer(strToken, ":"); |
| |
| String strName = ""; |
| if (objColumnTokenizer.hasMoreTokens()) |
| strName = objColumnTokenizer.nextToken(); |
| |
| String strExpression = strName; |
| if (objColumnTokenizer.hasMoreTokens()) |
| strExpression = objColumnTokenizer.nextToken(); |
| |
| String strDisplayName = strName; |
| if (objColumnTokenizer.hasMoreTokens()) |
| { |
| strDisplayName = strExpression; |
| strExpression = objColumnTokenizer.nextToken(); |
| } |
| |
| ExpressionTableColumn objColumn = |
| new ExpressionTableColumn(strName, strDisplayName, strExpression, bSortable); |
| if (bFormColumns) |
| objColumn.setColumnRendererSource(SimpleTableColumn.FORM_COLUMN_RENDERER_SOURCE); |
| if (objColumnSettingsContainer != null) |
| objColumn.loadSettings(objColumnSettingsContainer); |
| |
| arrColumns.add(objColumn); |
| } |
| |
| return new SimpleTableColumnModel(arrColumns); |
| } |
| |
| } |