Package org.eclipse.jface.viewers

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 Summary

    Modifier and Type
    Method
    Description
    boolean
    canModify(Object element, String property)
    Checks whether the given property of the given element can be modified.
    Object
    getValue(Object element, String property)
    Returns the value for the given property of the given element.
    void
    modify(Object element, String property, Object value)
    Modifies the value for the given property of the given element.

  • Method Details

    • 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: