Package com.levigo.jadice.web.client.util.command

Class InjectedCommand

java.lang.Object
com.levigo.jadice.web.client.util.command.InjectedCommand
All Implemented Interfaces:
Command
Direct Known Subclasses:
AbstractContextCommand, AnnotationPropertyEditor, FullscreenCommand, HorizontalAlignmentEditor.AlignmentCommand, InjectedWidgetCommand, LocaleCommand
public abstract class InjectedCommand extends Object implements Command
An abstract Command which relieves its subclasses from the chore of dealing with the extraction and validation of arguments from the context. This happens by the way of argument injection. Fields and/or setters annotated with @ link Argument} are automatically injected with the necessary arguments prior to command execution.

  • Constructor Details

    • InjectedCommand

      public InjectedCommand()

  • Method Details

    • canExecute

      public final boolean canExecute(Collection<Object> args)
      Description copied from interface: Command
      Permission checking for a command works as follows:

      1. Check user privileges if the command is executable.
      2. Ask if the command is executable with the given objects.

      Specified by:
      canExecute in interface Command
      Parameters:
      args - arguments for the command
      Returns:
      true - executable with these arguments,
      false - impossible to execute this command with these arguments

    • clearInjections

      protected void clearInjections()

    • canExecute

      protected boolean canExecute()
      Subclasses may override this method to perform argument validation beyond the validation that happens automatically during the injection phase. This method is called after the context has been found to match the requirements specified via the @ link Argument} annotations and the arguments have been injected.
      Returns:
      true if the command can/may be executed in the current context, false otherwise.

    • execute

      public final void execute(Collection<Object> args)
      Description copied from interface: Command
      Execute the command.
      Specified by:
      execute in interface Command
      Parameters:
      args - arguments for the command (contains all items for all actions inside of the context!)

    • execute

      protected abstract void execute()
      This method is called in order to execute the command. It is only called, after the arguments have been validated and injected and only if canExecute() has returned true.

    • isSelected

      public final boolean isSelected(Collection<Object> args)
      Description copied from interface: Command
      Returns the selected state of this command. This is typically used only for commands with a meaningful selection state.
      Specified by:
      isSelected in interface Command
      Parameters:
      args - arguments for the command
      Returns:
      true - selected with these arguments,
      false - not selected with these arguments

    • isSelected

      protected boolean isSelected()
      Returns the selected state of this command. This is typically used only for commands with a meaningful selection state.
      Returns:
      the selected state

    • setKey

      public void setKey(String key)

    • getKey

      protected String getKey()