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| package org.apache.tapestry.contrib.table.components; |
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| |
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| import java.util.ArrayList; |
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| import java.util.List; |
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| import java.util.StringTokenizer; |
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| |
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| import org.apache.hivemind.ApplicationRuntimeException; |
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| import org.apache.tapestry.IComponent; |
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| import org.apache.tapestry.contrib.table.model.IAdvancedTableColumn; |
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| import org.apache.tapestry.contrib.table.model.IAdvancedTableColumnSource; |
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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.simple.SimpleTableColumn; |
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| import org.apache.tapestry.contrib.table.model.simple.SimpleTableColumnModel; |
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| import org.apache.tapestry.services.ExpressionEvaluator; |
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| public class TableColumnModelSourceImpl implements TableColumnModelSource |
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| { |
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| private ExpressionEvaluator _expressionEvaluator; |
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| public void setExpressionEvaluator(ExpressionEvaluator expressionEvaluator)
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| { |
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| _expressionEvaluator = expressionEvaluator;
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| } |
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| public ITableColumnModel generateTableColumnModel(IAdvancedTableColumnSource objColumnSource,
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| String strDesc, IComponent objComponent, IComponent objColumnSettingsContainer) |
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| { |
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| if (strDesc == null)
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| return null;
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| List arrColumns = new ArrayList();
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| strDesc = strDesc.trim();
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| boolean bFormColumns = false;
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| while (strDesc.startsWith("*"))
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| { |
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| strDesc = strDesc.substring(1);
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| bFormColumns = true;
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| } |
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| |
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| StringTokenizer objTokenizer = new StringTokenizer(strDesc, ",");
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| while (objTokenizer.hasMoreTokens())
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| { |
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| String strToken = objTokenizer.nextToken().trim();
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| if (strToken.startsWith("="))
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| { |
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| String strColumnExpression = strToken.substring(1);
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| Object objColumn = _expressionEvaluator.read(
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| objColumnSettingsContainer, |
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| strColumnExpression); |
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| if (!(objColumn instanceof ITableColumn))
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| throw new ApplicationRuntimeException(TableMessages.notAColumn(
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| objComponent, |
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| strColumnExpression)); |
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| arrColumns.add(objColumn);
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| continue;
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| } |
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| boolean bSortable = true;
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| if (strToken.startsWith("!"))
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| { |
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| strToken = strToken.substring(1);
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| bSortable = false;
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| } |
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| StringTokenizer objColumnTokenizer = new StringTokenizer(strToken, ":");
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| String strName = "";
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| if (objColumnTokenizer.hasMoreTokens())
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| strName = objColumnTokenizer.nextToken();
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| String strExpression = strName;
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| if (objColumnTokenizer.hasMoreTokens())
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| strExpression = objColumnTokenizer.nextToken();
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| String strDisplayName = strName;
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| if (objColumnTokenizer.hasMoreTokens())
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| { |
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| strDisplayName = strExpression;
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| strExpression = objColumnTokenizer.nextToken();
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| } |
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| |
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| IAdvancedTableColumn objColumn =
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| objColumnSource.generateTableColumn(strName, strDisplayName, |
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| bSortable, strExpression); |
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| if (bFormColumns)
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| objColumn.setColumnRendererSource(SimpleTableColumn.FORM_COLUMN_RENDERER_SOURCE);
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| if (objColumnSettingsContainer != null)
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| objColumn.loadSettings(objColumnSettingsContainer);
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| arrColumns.add(objColumn);
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| } |
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| return new SimpleTableColumnModel(arrColumns);
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| } |
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| } |