Interface ICellModifier


  • public interface ICellModifier
    A cell modifier is used to access the data model from a cell editor in an abstract way. It offers methods to:
    • to check if a a model element's property can be edited or not
    • retrieve a value a model element's property
    • to store a cell editor's value back into the model element's property

    This interface should be implemented by classes that wish to act as cell modifiers.

    • Method Detail

      • canModify

        boolean canModify​(Object element,
                          String property)
        Checks whether the given property of the given element can be modified.
        Parameters:
        element - the element
        property - the property
        Returns:
        true if the property can be modified, and false if it is not modifiable
      • getValue

        Object getValue​(Object element,
                        String property)
        Returns the value for the given property of the given element. Returns null if the element does not have the given property.
        Parameters:
        element - the element
        property - the property
        Returns:
        the property value
      • modify

        void modify​(Object element,
                    String property,
                    Object value)
        Modifies the value for the given property of the given element. Has no effect if the element does not have the given property, or if the property cannot be modified.

        Note that it is possible for an SWT Item to be passed instead of the model element. To handle this case in a safe way, use:

         if (element instanceof Item) {
                element = ((Item) element).getData();
         }
         // modify the element's property here
         
        Parameters:
        element - the model element or SWT Item (see above)
        property - the property
        value - the new property value
        See Also:
        Item