/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.reporting.platform.plugin.drilldown;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedHashSet;
import org.pentaho.reporting.engine.classic.core.ReportEnvironment;
import org.pentaho.reporting.engine.classic.core.function.ReportFormulaContext;
import org.pentaho.reporting.engine.classic.core.function.formula.QuoteTextFunction;
import org.pentaho.reporting.libraries.base.util.CSVTokenizer;
import org.pentaho.reporting.libraries.formula.EvaluationException;
import org.pentaho.reporting.libraries.formula.FormulaContext;
import org.pentaho.reporting.libraries.formula.LibFormulaErrorValue;
import org.pentaho.reporting.libraries.formula.function.Function;
import org.pentaho.reporting.libraries.formula.function.ParameterCallback;
import org.pentaho.reporting.libraries.formula.lvalues.TypeValuePair;
import org.pentaho.reporting.libraries.formula.typing.ArrayCallback;
import org.pentaho.reporting.libraries.formula.typing.Sequence;
import org.pentaho.reporting.libraries.formula.typing.Type;
import org.pentaho.reporting.libraries.formula.typing.coretypes.TextType;
import org.pentaho.reporting.libraries.formula.typing.sequence.RecursiveSequence;
public class ContentLinkFunction implements Function {
public ContentLinkFunction() {
}
public String getCanonicalName() {
return "CONTENTLINK";
}
public TypeValuePair evaluate( final FormulaContext context, final ParameterCallback parameters )
throws EvaluationException {
final String[] contentLink = getContentLink( context );
if ( contentLink.length == 0 ) {
throw EvaluationException.getInstance( LibFormulaErrorValue.ERROR_NA_VALUE );
}
final Object o = parameters.getValue( 0 );
final Type type = parameters.getType( 0 );
final HashMap<String, Object[]> values = collectParameterValues( o, type, context );
final StringBuilder builder = new StringBuilder();
builder.append( "javascript:" );
// window.parent.Dashboards.fireChange(PARAM, VALUE);"
for ( int i = 0; i < contentLink.length; i++ ) {
final String variable = contentLink[ i ];
builder
.append( "var wnd=window.parent;var slf;while(!(wnd.Dashboards && wnd.Dashboards.fireOutputParam) && "
+ "wnd.parent && wnd.parent !== wnd){slf=wnd;wnd=wnd.parent};wnd.Dashboards.fireOutputParam(slf," );
builder.append( '\'' );
builder.append( QuoteTextFunction.saveConvert( variable ) );
builder.append( '\'' );
builder.append( "," );
final Object[] objects = values.get( variable );
if ( objects == null || objects.length == 0 ) {
builder.append( "null" );
} else if ( objects.length == 1 ) {
builder.append( '\'' );
builder.append( QuoteTextFunction.saveConvert( String.valueOf( objects[ 0 ] ) ) );
builder.append( '\'' );
} else {
builder.append( "new Array(" );
for ( int j = 0; j < objects.length; j++ ) {
if ( j != 0 ) {
builder.append( "," );
}
builder.append( '\'' );
builder.append( QuoteTextFunction.saveConvert( String.valueOf( objects[ j ] ) ) );
builder.append( '\'' );
}
builder.append( ")" );
}
builder.append( ");" );
}
final String value = builder.toString();
return new TypeValuePair( TextType.TYPE, value );
}
private String[] getContentLink( final FormulaContext context ) {
if ( ( context instanceof ReportFormulaContext ) == false ) {
return new String[ 0 ];
}
final ReportFormulaContext reportFormulaContext = (ReportFormulaContext) context;
final ReportEnvironment environment = reportFormulaContext.getRuntime().getProcessingContext().getEnvironment();
final Object clText = environment.getEnvironmentProperty( "contentLink" );
if ( clText == null ) {
return new String[ 0 ];
}
final CSVTokenizer csvTokenizer = new CSVTokenizer( String.valueOf( clText ), ",", "\"" );
final LinkedHashSet<String> result = new LinkedHashSet<String>();
while ( csvTokenizer.hasMoreTokens() ) {
final String el = csvTokenizer.nextToken();
result.add( el );
}
return result.toArray( new String[ result.size() ] );
}
private HashMap<String, Object[]> collectParameterValues( final Object o, final Type type,
final FormulaContext context ) throws EvaluationException {
final HashMap<String, Object[]> params = new HashMap<String, Object[]>();
if ( o instanceof Object[][] ) {
final Object[][] o2 = (Object[][]) o;
for ( int i = 0; i < o2.length; i++ ) {
final Object[] values = o2[ i ];
if ( values == null || values.length < 2 ) {
throw EvaluationException.getInstance( LibFormulaErrorValue.ERROR_ILLEGAL_ARRAY_VALUE );
}
final Object value = values[ 1 ];
if ( value instanceof Object[] ) {
params.put( String.valueOf( values[ 0 ] ), (Object[]) value );
} else {
params.put( String.valueOf( values[ 0 ] ), new Object[] { value } );
}
}
} else {
final ArrayCallback callback = context.getTypeRegistry().convertToArray( type, o );
if ( callback.getColumnCount() != 2 ) {
throw EvaluationException.getInstance( LibFormulaErrorValue.ERROR_ILLEGAL_ARRAY_VALUE );
}
for ( int i = 0, n = callback.getRowCount(); i < n; i++ ) {
final Sequence sequenceRaw =
context.getTypeRegistry().convertToSequence( callback.getType( i, 1 ), callback.getValue( i, 1 ) );
if ( sequenceRaw == null ) {
throw EvaluationException.getInstance( LibFormulaErrorValue.ERROR_NA_VALUE );
}
final RecursiveSequence sequence = new RecursiveSequence( sequenceRaw, context );
final ArrayList<Object> retval = new ArrayList<Object>();
while ( sequence.hasNext() ) {
final Object s = sequence.next();
retval.add( s );
}
params.put( String.valueOf( callback.getValue( i, 0 ) ), retval.toArray() );
}
}
return params;
}
}