Examples of com.intellij.openapi.actionSystem.AnAction.update()

com.intellij.openapi.actionSystem.AnAction.update()

Updates the state of the action. Default implementation does nothing. Override this method to provide the ability to dynamically change action's state and(or) presentation depending on the context (For example when your action state depends on the selection you can check for selection and change the state accordingly). This method can be called frequently, for instance, if an action is added to a toolbar, it will be updated twice a second. This means that this method is supposed to work really fast, no real work should be done at this phase. For example, checking selection in a tree or a list, is considered valid, but working with a file system is not. If you cannot understand the state of the action fast you should do it in the {@link #actionPerformed(AnActionEvent)} method and notifythe user that action cannot be executed if it's the case. @param e Carries information on the invocation place and data available

        final AnAction action = ActionManager.getInstance().getAction(actionId);
        final AnActionEvent event = new AnActionEvent(null, DataManager.getInstance().getDataContext(this), ActionPlaces.UNKNOWN,
                action.getTemplatePresentation(), ActionManager.getInstance(),
                0);
        action.beforeActionPerformedUpdate(event);
        action.update(event);


        if (event.getPresentation().isEnabled() && event.getPresentation().isVisible()) {
            action.actionPerformed(event);
        }
    }

            final Presentation presentation = new Presentation();
            final AnActionEvent
                    event =
                    new AnActionEvent(e, DataManager.getInstance().getDataContext(e.getComponent()), "", presentation,
                            actionManager, 0);
            action.update(event);
            if (presentation.isEnabled()) {
                action.actionPerformed(event);
            }
        }
    }

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