/*
* Created on Jul 19, 2004
*/
package com.realpersist.gef.directedit;
import org.eclipse.jface.viewers.ICellEditorValidator;
import com.realpersist.gef.model.ColumnType;
/**
* ICellValidator to validate direct edit values in the column label
* Collaborates with an instance of ValidationMessageHandler
* @author Phil Zoio
*/
public class ColumnNameTypeCellEditorValidator implements ICellEditorValidator
{
private ValidationMessageHandler handler;
/**
* @param validationMessageHandler the validation message handler to pass error information to
*/
public ColumnNameTypeCellEditorValidator(ValidationMessageHandler validationMessageHandler)
{
this.handler = validationMessageHandler;
}
/**
* @param validation of column type
* @return the error message if an error has occurred, otherwise null
*/
public String isValid(Object value)
{
String string = (String)value;
String name = null;
String type = null;
int colonIndex = string.indexOf(':');
if (colonIndex >= 0)
{
name = string.substring(0, colonIndex);
if (string.length() > colonIndex+1)
{
type = string.substring(colonIndex+1);
}
}
if (name != null && type!= null)
{
if (ColumnType.hasType(type))
{
return unsetMessageText();
}
if (name.indexOf(" ")!= -1)
{
String text = "Column name should not include the space character";
return setMessageText(text);
}
else
{
String text = "Invalid type: permissible types are: " + ColumnType.getTypes();
return setMessageText(text);
}
}
else
{
String text = "Invalid format for text entry. Needs [name]:[type] format";
return setMessageText(text);
}
}
private String unsetMessageText()
{
handler.reset();
return null;
}
private String setMessageText(String text)
{
handler.setMessageText(text);
return text;
}
}