Package org.eclipse.ui.statushandlers

Class StatusManager

  • public class StatusManager
extends Object

    StatusManager is the entry point for all statuses to be reported in the user interface.

    Handlers shoudn't be used directly but through the StatusManager singleton which keeps the status handling policy and chooses handlers. StatusManager.getManager().handle(IStatus) and handle(IStatus status, int style) are the methods are the primary access points to the StatusManager.

    Acceptable styles (can be combined with logical OR)

    • NONE - a style indicating that the status should not be acted on. This is used by objects such as log listeners that do not want to report a status twice
    • LOG - a style indicating that the status should be logged only
    • SHOW - a style indicating that handlers should show a problem to an user without blocking the calling method while awaiting user response. This is generally done using a non modal Dialog
    • BLOCK - a style indicating that the handling should block the UI until the user has responded. This is generally done using a modal window such as a Dialog

    Handlers are intended to be accessed via the status manager. The StatusManager chooses which handler should be used for a particular error. There are two ways for adding handlers to the handling flow. First using extension point org.eclipse.ui.statusHandlers, second by the workbench advisor and its method WorkbenchAdvisor.getWorkbenchErrorHandler(). If a handler is associated with a product, it is used instead of this defined in advisor.

    Since:
    3.3
    See Also:
    AbstractStatusHandler

    • Field Detail

      • NONE

        public static final int NONE
        A style indicating that the status should not be acted on. This is used by objects such as log listeners that do not want to report a status twice.
        See Also:
        Constant Field Values

      • LOG

        public static final int LOG
        A style indicating that the status should be logged only.
        See Also:
        Constant Field Values

      • SHOW

        public static final int SHOW
        A style indicating that handlers should show a problem to an user without blocking the calling method while awaiting user response. This is generally done using a non modal Dialog.
        See Also:
        Constant Field Values

      • BLOCK

        public static final int BLOCK
        A style indicating that the handling should block the calling thread until the status has been handled.

        A typical usage of this would be to ensure that the user's actions are blocked until they've dealt with the status in some manner. It is therefore likely but not required that the StatusHandler would achieve this through the use of a modal dialog.

        Due to the fact that use of BLOCK will block UI, care should be taken in this use of this flag.

        See Also:
        Constant Field Values

    • Method Detail

      • getManager

        public static StatusManager getManager()
        Returns StatusManager singleton instance.
        Returns:
        the manager instance

      • handle

        public void handle​(StatusAdapter statusAdapter,
                   int style)
        Handles the given status adapter due to the style. Because the facility depends on Workbench, this method will log the status, if Workbench isn't initialized and the style isn't NONE. If Workbench isn't initialized and the style is NONE, the manager will do nothing.
        Parameters:
        statusAdapter - the status adapter
        style - the style. Value can be combined with logical OR. One of NONE, LOG, SHOW and BLOCK.

      • handle

        public void handle​(StatusAdapter statusAdapter)
        Handles the given status adapter. The LOG style is used when this method is called.
        Parameters:
        statusAdapter - the status adapter

      • handle

        public void handle​(IStatus status,
                   int style)
        Handles the given status due to the style. Because the facility depends on Workbench, this method will log the status, if Workbench isn't initialized and the style isn't NONE. If Workbench isn't initialized and the style is NONE, the manager will do nothing.
        Parameters:
        status - the status to handle
        style - the style. Value can be combined with logical OR. One of NONE, LOG, SHOW and BLOCK.

      • handle

        public void handle​(IStatus status)
        Handles the given status. The LOG style is used when this method is called.
        Parameters:
        status - the status to handle

      • handle

        public void handle​(CoreException coreException,
                   String pluginId)
        Handles given CoreException. This method has been introduced to prevent anti-pattern: 
         
 StatusManager.getManager().handle(coreException.getStatus());
        that does not print the stack trace to the log.
        Parameters:
        coreException - a CoreException to be handled.
        pluginId - the unique identifier of the relevant plug-in
        Since:
        3.4
        See Also:
        handle(IStatus)

      • addLoggedStatus

        public void addLoggedStatus​(IStatus status)
        This method informs the StatusManager that this IStatus is being handled by the handler and to ignore it when it shows up in our ILogListener.
        Parameters:
        status - already handled and logged status

      • addListener

        public void addListener​(StatusManager.INotificationListener listener)
        Adds a listener to the StatusManager.
        Parameters:
        listener - - a listener to be added.
        Since:
        3.5

      • removeListener

        public void removeListener​(StatusManager.INotificationListener listener)
        Removes a listener from StatusManager.
        Parameters:
        listener - - a listener to be removed.
        Since:
        3.5