Trait PNSApplicationDelegate 

pub trait PNSApplicationDelegate {
    // Provided methods
    fn will_finish_launching(&mut self) { ... }
    fn did_finish_launching(&mut self) { ... }
    fn did_become_active(&mut self) { ... }
    fn will_resign_active(&mut self) { ... }
    fn will_continue_user_activity(&mut self, _activity_type: &str) -> bool { ... }
    fn will_terminate(&mut self) { ... }
    fn will_become_active(&mut self) { ... }
    fn did_resign_active(&mut self) { ... }
    fn will_hide(&mut self) { ... }
    fn did_hide(&mut self) { ... }
    fn will_unhide(&mut self) { ... }
    fn did_unhide(&mut self) { ... }
    fn will_update(&mut self) { ... }
    fn did_update(&mut self) { ... }
    fn should_terminate(&mut self) -> NSApplicationTerminateReply { ... }
    fn should_terminate_after_last_window_closed(&mut self) -> bool { ... }
    fn should_handle_reopen(&mut self, _has_visible_windows: bool) -> bool { ... }
    fn dock_menu(&mut self) -> Option<NSMenu> { ... }
}

A set of methods that manage your app’s life cycle and its interaction with common system services.

Provided Methods

fn will_finish_launching(&mut self)

Called right before the application will finish launching. You really, probably, want to do your setup in did_finish_launching unless you’re sure of what you’re doing.

fn did_finish_launching(&mut self)

Fired when the application has finished launching.

fn did_become_active(&mut self)

Fired when the application is about to become active.

fn will_resign_active(&mut self)

Fired when the application is about to resign active state.

fn will_continue_user_activity(&mut self, _activity_type: &str) -> bool

Fired when the user is going to continue an activity.

fn will_terminate(&mut self)

Fired before the application terminates. You can use this to do any required cleanup.

fn will_become_active(&mut self)

Fired immediately before the application is about to become active.

fn did_resign_active(&mut self)

Fired when the application has resigned active state.

fn will_hide(&mut self)

Fired when the application is about to hide.

fn did_hide(&mut self)

Fired after the application has hidden.

fn will_unhide(&mut self)

Fired when the application is about to unhide itself.

fn did_unhide(&mut self)

Fired after the application has unhidden itself.

fn will_update(&mut self)

Fired immediately before the application object updates its windows.

fn did_update(&mut self)

Fired immediately after the application object updates its windows.

fn should_terminate(&mut self) -> NSApplicationTerminateReply

This is fired after the Quit menu item has been selected, or after you’ve called App::terminate().

In most cases you just want TerminateResponse::Now here, which enables business as usual. If you need, though, you can cancel the termination via TerminateResponse::Cancel to continue something essential. If you do this, you’ll need to be sure to call App::reply_to_termination_request() to circle back.

fn should_terminate_after_last_window_closed(&mut self) -> bool

Called after closing the last open window. Return true here if you want the application to terminate.

fn should_handle_reopen(&mut self, _has_visible_windows: bool) -> bool

Sent by the application to the delegate prior to default behavior to reopen AppleEvents.

has_visible_windows indicates whether the Application object found any visible windows in your application. You can use this value as an indication of whether the application would do anything if you return true.

Return true if you want the application to perform its normal tasks, or false if you want the application to do nothing. The default implementation of this method returns true.

Some finer points of discussion, from Apple documentation:

These events are sent whenever the Finder reactivates an already running application because someone double-clicked it again or used the dock to activate it.

For most document-based applications, an untitled document will be created.

Read more here

fn dock_menu(&mut self) -> Option<NSMenu>

Supply a dock menu for the application dynamically. The default implementation for this method returns None, for no menu.

Implementors