[FR 1913527] - http://sourceforge.net/tracker/index.php?func=detail&aid=1913527&group_id=176962&atid=879335

Thanks goes to Michael Judd for developing this awesome functionality! I just backported it from trunk into stable.

Regards,
Fernando

base/src/org/compiere/model/MColumn.java

@@ -520,7 +520,18 @@ public class MColumn extends X_AD_Column
 	}
 	//end vpj-cd e-evolution
 	
-	
+	/**
+	* Get Table Id for a column
+	* @param ctx context
+	* @param AD_Column_ID id
+	* @param trxName transaction
+	* @return MColumn
+	*/
+	public static int getTable_ID(Properties ctx, int AD_Column_ID, String trxName)
+	{
+		String sqlStmt = "SELECT AD_Table_ID FROM AD_Column WHERE AD_Column_ID=?";
+		return DB.getSQLValue(trxName, sqlStmt, AD_Column_ID);
+	}
 
 	
 }	//	MColumn

client/src/org/compiere/apps/search/Info.java

@@ -418,6 +418,12 @@ public abstract class Info extends CDialog
 			if (layout[i].getColClass() == IDColumn.class)
 				m_keyColumnIndex = i;
 		}
+		
+		//  Table Selection (Invoked before setting column class so that row selection is enabled)
+		p_table.setRowSelectionAllowed(true);
+		p_table.addMouseListener(this);
+		p_table.setMultiSelection(p_multiSelection);
+		
 		//  set editors (two steps)
 		for (int i = 0; i < layout.length; i++)
 			p_table.setColumnClass(i, layout[i].getColClass(), layout[i].isReadOnly(), layout[i].getColHeader());
@@ -435,11 +441,6 @@ public abstract class Info extends CDialog
 		if (m_keyColumnIndex == -1)
 			log.log(Level.SEVERE, "No KeyColumn - " + sql);
 		
-		//  Table Selection
-		p_table.setRowSelectionAllowed(true);
-		p_table.addMouseListener(this);
-		p_table.setMultiSelection(p_multiSelection);
-
 		//  Window Sizing
 		parameterPanel.setPreferredSize(new Dimension (INFO_WIDTH, parameterPanel.getPreferredSize().height));
 		//Begin - [FR 1823612 ] Product Info Screen Improvements
@@ -527,6 +528,7 @@ public abstract class Info extends CDialog
 		//	Multi Selection
 		if (p_multiSelection)
 		{
+			m_results.addAll(getSelectedRowKeys());
 		}
 		else    //  singleSelection
 		{
@@ -549,17 +551,67 @@ public abstract class Info extends CDialog
 	 */
 	protected Integer getSelectedRowKey()
 	{
-		int row = p_table.getSelectedRow();
-		if (row != -1 && m_keyColumnIndex != -1)
+		ArrayList<Integer> selectedDataList = getSelectedRowKeys();
+		if (selectedDataList.size() == 0)
 		{
-			Object data = p_table.getModel().getValueAt(row, m_keyColumnIndex);
-			if (data instanceof IDColumn)
-				data = ((IDColumn)data).getRecord_ID();
-			if (data instanceof Integer)
-				return (Integer)data;
+			return null;
+		}
+		else
+		{
+			return selectedDataList.get(0);
 		}
-		return null;
 	}   //  getSelectedRowKey
+	
+	/**
+     *  Get the keys of selected row/s based on layout defined in prepareTable
+     *  @return IDs if selection present
+     *  @author ashley
+     */
+    protected ArrayList<Integer> getSelectedRowKeys()
+    {
+        ArrayList<Integer> selectedDataList = new ArrayList<Integer>();
+        
+        if (m_keyColumnIndex == -1)
+        {
+            return selectedDataList;
+        }
+        
+        if (p_multiSelection)
+        {
+        	int rows = p_table.getRowCount();
+            for (int row = 0; row < rows; row++)
+            {
+                Object data = p_table.getModel().getValueAt(row, m_keyColumnIndex);
+                if (data instanceof IDColumn)
+                {
+                    IDColumn dataColumn = (IDColumn)data;
+                    if (dataColumn.isSelected())
+                    {
+                        selectedDataList.add(dataColumn.getRecord_ID());
+                    }
+                }
+                else
+                {
+                    log.severe("For multiple selection, IDColumn should be key column for selection");
+                }
+            }
+        }
+        
+        if (selectedDataList.size() == 0)
+        {
+        	int row = p_table.getSelectedRow();
+    		if (row != -1 && m_keyColumnIndex != -1)
+    		{
+    			Object data = p_table.getModel().getValueAt(row, m_keyColumnIndex);
+    			if (data instanceof IDColumn)
+    				selectedDataList.add(((IDColumn)data).getRecord_ID());
+    			if (data instanceof Integer)
+    				selectedDataList.add((Integer)data);
+    		}
+        }
+      
+        return selectedDataList;
+    }   //  getSelectedRowKeys
 
 	/**
 	 *	Get selected Keys
@@ -569,7 +621,9 @@ public abstract class Info extends CDialog
 	{
 		if (!m_ok || m_results.size() == 0)
 			return null;
-		return m_results.toArray();
+		Integer values[] = new Integer[m_results.size()];
+		m_results.toArray(values);
+		return values;
 	}	//	getSelectedKeys;
 
 	/**
@@ -786,12 +840,15 @@ public abstract class Info extends CDialog
 	}   //  calueChanged
 
 	/**
-	 *  Enable OK, History, Zoom if row selected
+	 *  Enable OK, History, Zoom if row/s selected
+     *  ---
+     *  Changes: Changed the logic for accomodating multiple selection
+     *  @author ashley
 	 */
 	protected void enableButtons ()
 	{
-		boolean enable = p_table.getSelectedRow() != -1;
-		confirmPanel.getOKButton().setEnabled(enable);
+		boolean enable = (p_table.getSelectedRowCount() == 1);
+		confirmPanel.getOKButton().setEnabled(p_table.getSelectedRowCount() > 0);
 		
 		if (hasHistory())
 			confirmPanel.getHistoryButton().setEnabled(enable);

client/src/org/compiere/apps/search/InfoProduct.java

@@ -936,7 +936,7 @@ public final class InfoProduct extends Info implements ActionListener
 		if (s_productLayout == null)
 		{
 			ArrayList<Info_Column> list = new ArrayList<Info_Column>();
-			list.add(new Info_Column(" ", "p.M_Product_ID", IDColumn.class));
+			list.add(new Info_Column(" ", "p.M_Product_ID", IDColumn.class, !p_multiSelection));
 			list.add(new Info_Column(Msg.translate(Env.getCtx(), "Discontinued").substring(0, 1), "p.Discontinued", Boolean.class));
 			list.add(new Info_Column(Msg.translate(Env.getCtx(), "Value"), "p.Value", String.class));
 			list.add(new Info_Column(Msg.translate(Env.getCtx(), "Name"), "p.Name", String.class));

client/src/org/compiere/apps/search/Info_Column.java

@@ -48,6 +48,20 @@ public class Info_Column
 	{
 		this(colHeader, colSQL, colClass, true, false, IDcolSQL);
 	}   //  Info_Column
+	
+	/**
+	 *  Create Info Column (not color column)
+	 *
+	 *  @param colHeader Column Header
+	 *  @param colSQL    SQL select code for column
+	 *  @param colClass  class of column - determines display
+	 *  @param readOnly  column is read only
+	 *  @author ashley
+	 */
+	 public Info_Column (String colHeader, String colSQL, Class colClass, boolean readOnly)
+	 {
+	    this(colHeader, colSQL, colClass, readOnly, false, null);
+	 }   //  Info_Column
 
 	/**
 	 *  Create Info Column

client/src/org/compiere/grid/GridController.java

@@ -1037,6 +1037,53 @@ public class GridController extends CPanel
 	}   //  rowChanged
 
 
+	/**************************************************************************
+	 * Save Multiple records - Clone a record and assign new values to each 
+	 * clone for a specific column.
+	 * @param ctx context
+	 * @param tableName Table Name
+	 * @param columnName Column for which value need to be changed
+	 * @param recordId Record to clone
+	 * @param values Values to be assigned to clones for the specified column
+	 * @param trxName Transaction
+	 * @throws Exception If error is occured when loading the PO or saving clones
+	 * 
+	 * @author ashley
+	 */
+	protected void saveMultipleRecords(Properties ctx, String tableName, 
+			String columnName, int recordId, Integer[] values, 
+			String trxName) throws Exception
+	{
+		if (values == null)
+		{
+			return ;
+		}
+		
+		int oldRow = m_mTab.getCurrentRow();
+		GridField lineField = m_mTab.getField("Line");	
+		
+		for (int i = 0; i < values.length; i++)
+		{
+			if (!m_mTab.dataNew(true))
+			{
+				throw new IllegalStateException("Could not clone tab");
+			}
+			
+			m_mTab.setValue(columnName, values[i]);
+			
+			if (lineField != null)
+			{
+				m_mTab.setValue(lineField, 0);
+			}
+			
+			if (!m_mTab.dataSave(false))
+			{
+				throw new IllegalStateException("Could not update tab");
+			}
+			
+			m_mTab.setCurrentRow(oldRow);
+		}
+	}
 	
 	/**************************************************************************
 	 *  Vetoable Change Listener.
@@ -1104,7 +1151,38 @@ public class GridController extends CPanel
 		else
 		{
 		//	mTable.setValueAt (e.getNewValue(), row, col, true);
-			mTable.setValueAt (e.getNewValue(), row, col);	//	-> dataStatusChanged -> dynamicDisplay
+			/*
+         	 * Changes: Added the logic below to handle multiple values for a single field
+         	 *          due to multiple selection in Lookup (Info).
+         	 * @author ashley
+         	 */
+			Object newValue = e.getNewValue();
+			Integer newValues[] = null;
+			
+			if (newValue instanceof Integer[])
+			{
+				newValues = ((Integer[])newValue);
+				newValue = newValues[0];
+				
+				if (newValues.length > 1)
+				{
+					Integer valuesCopy[] = new Integer[newValues.length - 1];
+					System.arraycopy(newValues, 1, valuesCopy, 0, valuesCopy.length);
+					newValues = valuesCopy;
+				}
+				else
+				{
+					newValues = null;
+				}
+			}
+			else if (newValue instanceof Object[])
+			{
+				log.severe("Multiple values can only be processed for IDs (Integer)");
+				throw new PropertyVetoException("Multiple Selection values not available for this field", e);
+			}
+			
+			mTable.setValueAt (newValue, row, col);	//	-> dataStatusChanged -> dynamicDisplay
+			
 			//	Force Callout
 			if (e.getPropertyName().equals("S_ResourceAssignment_ID"))
 			{
@@ -1112,6 +1190,37 @@ public class GridController extends CPanel
 				if (mField != null && mField.getCallout().length() > 0)
 					m_mTab.processFieldChange(mField);     //  Dependencies & Callout
 			}
+			
+			if (newValues != null && newValues.length > 0)
+			{
+				// Save data, since record need to be used for generating clones.
+				if (!m_mTab.dataSave(false))
+				{
+					throw new PropertyVetoException("SaveError", e);
+				}
+				
+				// Retrieve the current record ID
+				int recordId = m_mTab.getKeyID(m_mTab.getCurrentRow());
+				
+				Trx trx = Trx.get(Trx.createTrxName(), true);
+				trx.start();
+				try
+				{
+					saveMultipleRecords(Env.getCtx(), mTable.getTableName(), e.getPropertyName(), recordId, newValues, trx.getTrxName());
+					trx.commit();
+					m_mTab.dataRefreshAll();
+				}
+				catch(Exception ex)
+				{
+					trx.rollback();
+					log.severe(ex.getMessage());
+					throw new PropertyVetoException("SaveError", e);
+				}
+				finally
+				{
+					trx.close();
+				}
+			}
 		}
 
 	//	log.config( "GridController.vetoableChange (" + m_mTab.toString() + ") - fini", e.getPropertyName() + "=" + e.getNewValue());