Package org.eclipse.debug.core

Interface IExpressionManager

public interface IExpressionManager
The expression manager manages the collection of registered expressions in the workspace. An expression is a snippet of code that can be evaluated to produce a value. Expression creation and evaluation are client responsibilities.

Clients interested in expression change notification may register with the expression manager - see IExpressionListener and IExpressionsListener.

Since:
2.0
See Also:
Restriction:
This interface is not intended to be implemented by clients.
Restriction:
This interface is not intended to be extended by clients.

  • Method Details

    • addExpression

      void addExpression(IExpression expression)
      Adds the given expression to the collection of registered expressions in the workspace and notifies all registered listeners. This has no effect if the given expression is already registered.
      Parameters:
      expression - the expression to add

    • addExpressions

      void addExpressions(IExpression[] expressions)
      Adds the given expressions to the collection of registered expressions in the workspace and notifies all registered listeners. Has no effect on expressions already registered.
      Parameters:
      expressions - the expressions to add
      Since:
      2.1

    • newWatchExpression

      IWatchExpression newWatchExpression(String expressionText)
      Creates and returns a new watch expression with the given text. The returned expression is not added to this manager.
      Parameters:
      expressionText - the text for the new expression
      Returns:
      new watch expression
      Since:
      3.0

    • getExpressions

      IExpression[] getExpressions()
      Returns a collection of all registered expressions, possibly empty.
      Returns:
      an array of expressions

    • hasExpressions

      boolean hasExpressions()
      Returns whether there are any registered expressions
      Returns:
      whether there are any registered expressions

    • getExpressions

      IExpression[] getExpressions(String modelIdentifier)
      Returns a collection of all expressions registered for the given debug model,possibly empty.
      Parameters:
      modelIdentifier - identifier of a debug model plug-in
      Returns:
      an array of expressions

    • removeExpression

      void removeExpression(IExpression expression)
      Removes the given expression from the expression manager, and notifies all registered listeners. Has no effect if the given expression is not currently registered.
      Parameters:
      expression - the expression to remove

    • removeExpressions

      void removeExpressions(IExpression[] expressions)
      Removes the given expressions from the collection of registered expressions in the workspace and notifies all registered listeners. Has no effect on expressions not already registered.
      Parameters:
      expressions - the expressions to remove
      Since:
      2.1

    • addExpressionListener

      void addExpressionListener(IExpressionListener listener)
      Adds the given listener to the collection of registered expression listeners. Has no effect if an identical listener is already registered.
      Parameters:
      listener - the listener to add

    • removeExpressionListener

      void removeExpressionListener(IExpressionListener listener)
      Removes the given listener from the collection of registered expression listeners. Has no effect if an identical listener is not already registered.
      Parameters:
      listener - the listener to remove

    • addExpressionListener

      void addExpressionListener(IExpressionsListener listener)
      Adds the given listener to the collection of registered expression listeners. Has no effect if an identical listener is already registered.
      Parameters:
      listener - the listener to add
      Since:
      2.1

    • removeExpressionListener

      void removeExpressionListener(IExpressionsListener listener)
      Removes the given listener from the collection of registered expression listeners. Has no effect if an identical listener is not already registered.
      Parameters:
      listener - the listener to remove
      Since:
      2.1

    • newWatchExpressionDelegate

      IWatchExpressionDelegate newWatchExpressionDelegate(String id)
      Returns a new watch expression delegate for the given debug model or null if no delegate is available.
      Parameters:
      id - the unique identifier of a debug model for which a watch expression delegate has been contributed
      Returns:
      a watch expression delegate associated with the given model or null if none
      Since:
      3.0
      See Also:

    • hasWatchExpressionDelegate

      boolean hasWatchExpressionDelegate(String id)
      Returns whether a watch expression delegate has been contributed for the given debug model.
      Parameters:
      id - the unique identifier of a debug model
      Returns:
      whether a watch expression delegate has been contributed for the given debug model
      Since:
      3.1
      See Also: