IDEMPIERE-701 Implement solving indirect context (#828)

* IDEMPIERE-701 Implement solving indirect context

- implement for tab display logic and readonly logic

* IDEMPIERE-701 Implement solving indirect context

- make use of parent gridtab for indirect context resolution

org.adempiere.base/src/org/compiere/model/GridField.java

@@ -40,6 +40,7 @@ import org.adempiere.exceptions.AdempiereException;
 import org.compiere.util.CLogMgt;
 import org.compiere.util.CLogger;
 import org.compiere.util.DB;
+import org.compiere.util.DefaultEvaluatee;
 import org.compiere.util.DisplayType;
 import org.compiere.util.Env;
 import org.compiere.util.Evaluatee;
@@ -1222,57 +1223,7 @@ public class GridField
 	 */
 	public String get_ValueAsString (Properties ctx, String variableName)
 	{
-		//ref column
+		return new DefaultEvaluatee(getGridTab(), m_vo.WindowNo, m_vo.TabNo).get_ValueAsString(ctx, variableName);
-		String foreignColumn = "";
-		int f = variableName.indexOf('.');
-		if (f > 0) {
-			foreignColumn = variableName.substring(f+1, variableName.length());
-			variableName = variableName.substring(0, f);
-		}
-		
-		String value = null;
-		if( m_vo.TabNo == 0)
-	    	value = Env.getContext (ctx, m_vo.WindowNo, variableName, true);
-	    else
-	    {
-	    	boolean tabOnly = false;
-	    	if (variableName.startsWith("~")) 
-	    	{
-	    		variableName = variableName.substring(1);
-	    		tabOnly = true;
-	    	}
-	    	value = Env.getContext (ctx, m_vo.WindowNo, m_vo.TabNo, variableName, tabOnly, true);
-	    }
-		if (!Util.isEmpty(value) && !Util.isEmpty(foreignColumn) && variableName.endsWith("_ID")) {
-			int id = 0;
-			try {
-				id = Integer.parseInt(value);
-			} catch (Exception e){}
-			if (id > 0) {
-				String refValue = "";
-				if (getGridTab() != null) {
-					MColumn column = MColumn.get(ctx, getGridTab().getTableName(), variableName);
-					if (column != null) {
-						String foreignTable = column.getReferenceTableName();
-						refValue = DB.getSQLValueString(null,
-								"SELECT " + foreignColumn + " FROM " + foreignTable + " WHERE " 
-										+ foreignTable + "_ID = ?", id);
-					}
-					return refValue;
-				} else {
-					// no GridTab - maybe coming from process parameter, try tableName from columnName
-					String foreignTable = variableName.substring(0, variableName.length()-3);
-					MTable table = MTable.get(ctx, foreignTable);
-					if (table != null) {
-						refValue = DB.getSQLValueString(null,
-								"SELECT " + foreignColumn + " FROM " + foreignTable + " WHERE " 
-										+ foreignTable + "_ID = ?", id);
-						return refValue;
-					}
-				}
-			}
-		}
-		return value;
 	}	//	get_ValueAsString
 
 

org.adempiere.base/src/org/compiere/model/GridTab.java

@@ -48,6 +48,7 @@ import org.compiere.Adempiere;
 import org.compiere.util.CLogMgt;
 import org.compiere.util.CLogger;
 import org.compiere.util.DB;
+import org.compiere.util.DefaultEvaluatee;
 import org.compiere.util.DisplayType;
 import org.compiere.util.Env;
 import org.compiere.util.Evaluatee;
@@ -1623,7 +1624,18 @@ public class GridTab implements DataStatusListener, Evaluatee, Serializable
 	 */
 	public String get_ValueAsString (String variableName)
 	{
-		return Env.getContext (m_vo.ctx, m_vo.WindowNo, m_vo.TabNo, variableName, false, true);
+		return get_ValueAsString (m_vo.ctx, variableName);
+	}	//	get_ValueAsString
+	
+	/**
+	 * 	Get Variable Value (Evaluatee)
+	 *  @param ctx context
+	 *	@param variableName name
+	 *	@return value
+	 */
+	public String get_ValueAsString (Properties ctx, String variableName)
+	{
+		return new DefaultEvaluatee(this, m_vo.WindowNo, m_vo.TabNo).get_ValueAsString(ctx, variableName);
 	}	//	get_ValueAsString
 
 	/**

org.adempiere.base/src/org/compiere/util/DefaultEvaluatee.java

@@ -0,0 +1,128 @@
+/***********************************************************************
+ * This file is part of iDempiere ERP Open Source                      *
+ * http://www.idempiere.org                                            *
+ *                                                                     *
+ * Copyright (C) Contributors                                          *
+ *                                                                     *
+ * This program is free software; you can redistribute it and/or       *
+ * modify it under the terms of the GNU General Public License         *
+ * as published by the Free Software Foundation; either version 2      *
+ * of the License, or (at your option) any later version.              *
+ *                                                                     *
+ * 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 General Public License for more details.                        *
+ *                                                                     *
+ * You should have received a copy of the GNU General Public License   *
+ * along with this program; if not, write to the Free Software         *
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,          *
+ * MA 02110-1301, USA.                                                 *
+ *                                                                     *
+ * Contributors:                                                       *
+ * - hengsin                         								   *
+ **********************************************************************/
+package org.compiere.util;
+
+import java.util.Properties;
+
+import org.compiere.model.GridTab;
+import org.compiere.model.MColumn;
+import org.compiere.model.MTable;
+
+/**
+ * @author hengsin
+ *
+ */
+public class DefaultEvaluatee implements Evaluatee {
+
+	private GridTab m_GridTab;
+	private int m_WindowNo;
+	private int m_TabNo;
+
+	/**
+	 * 
+	 * @param gridTab
+	 * @param windowNo
+	 * @param tabNo
+	 */
+	public DefaultEvaluatee(GridTab gridTab, int windowNo, int tabNo) {
+		this.m_GridTab = gridTab;
+		this.m_WindowNo = windowNo;
+		this.m_TabNo = tabNo;
+	}
+
+	@Override
+	public String get_ValueAsString(String variableName) {
+		return get_ValueAsString(Env.getCtx(), variableName);
+	}
+
+	/**
+	 * 	Get Variable Value (Evaluatee)
+	 *	@param variableName name
+	 *	@return value
+	 */
+	public String get_ValueAsString (Properties ctx, String variableName)
+	{
+		//ref column
+		String foreignColumn = "";
+		int f = variableName.indexOf('.');
+		if (f > 0) {
+			foreignColumn = variableName.substring(f+1, variableName.length());
+			variableName = variableName.substring(0, f);
+		}
+		
+		String value = null;
+		if( m_TabNo == 0)
+	    	value = Env.getContext (ctx, m_WindowNo, variableName, true);
+	    else
+	    {
+	    	boolean tabOnly = false;
+	    	if (variableName.startsWith("~")) 
+	    	{
+	    		variableName = variableName.substring(1);
+	    		tabOnly = true;
+	    	}
+	    	value = Env.getContext (ctx, m_WindowNo, m_TabNo, variableName, tabOnly, true);
+	    }
+		if (!Util.isEmpty(value) && !Util.isEmpty(foreignColumn) && variableName.endsWith("_ID")) {
+			int id = 0;
+			try {
+				id = Integer.parseInt(value);
+			} catch (Exception e){}
+			if (id > 0) {
+				String refValue = "";
+				MColumn column = null;
+				if (m_GridTab != null) {
+					column = MColumn.get(ctx, m_GridTab.getTableName(), variableName);					
+					if (column == null) {
+						//try parent
+						GridTab parent = m_GridTab.getParentTab();
+						while (column == null && parent != null) {
+							column = MColumn.get(ctx, parent.getTableName(), variableName);
+							parent = parent.getParentTab();
+						}
+					}
+				}
+				if (column != null) {
+					String foreignTable = column.getReferenceTableName();
+					refValue = DB.getSQLValueString(null,
+							"SELECT " + foreignColumn + " FROM " + foreignTable + " WHERE " 
+									+ foreignTable + "_ID = ?", id);
+					return refValue;
+				} else {
+					// no MColumn found, try tableName from columnName
+					String foreignTable = variableName.substring(0, variableName.length()-3);
+					MTable table = MTable.get(ctx, foreignTable);
+					if (table != null) {
+						refValue = DB.getSQLValueString(null,
+								"SELECT " + foreignColumn + " FROM " + foreignTable + " WHERE " 
+										+ foreignTable + "_ID = ?", id);
+						return refValue;
+					}
+				}
+			}
+		}
+		return value;
+	}
+}

org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/adwindow/ADTabpanel.java

@@ -90,6 +90,7 @@ import org.compiere.model.X_AD_FieldGroup;
 import org.compiere.model.X_AD_ToolBarButton;
 import org.compiere.util.CCache;
 import org.compiere.util.CLogger;
+import org.compiere.util.DefaultEvaluatee;
 import org.compiere.util.DisplayType;
 import org.compiere.util.Env;
 import org.compiere.util.Evaluatee;
@@ -1253,7 +1254,7 @@ DataStatusListener, IADTabpanel, IdSpace, IFieldEditorContainer
     @Override
     public String get_ValueAsString(String variableName)
     {
-        return Env.getContext(Env.getCtx(), windowNo, variableName);
+    	return new DefaultEvaluatee(getGridTab(), windowNo, tabNo).get_ValueAsString(Env.getCtx(), variableName);
     } // get_ValueAsString
 
     /**