Added helper functions (#126)

* Added more helper functions

* Add docs

src/appkit/app/mod.rs

@@ -224,6 +224,13 @@ impl App {
         });
     }
 
+    /// Sends an update() message to each onscreen window.
+    pub fn update_windows() {
+        shared_application(|app| unsafe {
+            let _: () = msg_send![app, updateWindows];
+        });
+    }
+
     /// Unregisters for remote notifications from APNS.
     pub fn unregister_for_remote_notifications() {
         shared_application(|app| unsafe {

src/appkit/window/mod.rs

@@ -20,6 +20,7 @@ use objc::{class, msg_send, msg_send_id, sel};
 use crate::appkit::toolbar::{Toolbar, ToolbarDelegate};
 use crate::color::Color;
 use crate::foundation::{id, nil, to_bool, NSInteger, NSString, NSUInteger, NO, YES};
+use crate::geometry::Rect;
 use crate::layout::Layout;
 use crate::objc_access::ObjcAccess;
 use crate::utils::{os, Controller};
@@ -338,6 +339,55 @@ impl<T> Window<T> {
         }
     }
 
+    /// Sets the origin and size of the window’s frame rectangle according to a given frame rectangle,
+    /// thereby setting its position and size onscreen.
+    pub fn set_frame(&self, rect: Rect) {
+        let rect: CGRect = rect.into();
+        unsafe {
+            let _: () = msg_send![&*self.objc, setFrame:rect display:YES];
+        }
+    }
+
+    /// Sets whether the window is transparent to mouse events.
+    pub fn set_ignores_mouse_events(&self, ignore: bool) {
+        unsafe {
+            let _: () = msg_send![&*self.objc, setIgnoresMouseEvents:match ignore {
+                true => YES,
+                false => NO,
+            }];
+        }
+    }
+
+    /// Sets whether the window accepts mouse-moved events.
+    pub fn set_accepts_mouse_moved_events(&self, accept: bool) {
+        unsafe {
+            let _: () = msg_send![&*self.objc, setAcceptsMouseMovedEvents:match accept {
+                true => YES,
+                false => NO,
+            }];
+        }
+    }
+
+    /// Sets the window’s visible state to the value you specify.
+    pub fn set_is_visible(&self, visible: bool) {
+        unsafe {
+            let _: () = msg_send![&*self.objc, setIsVisible:match visible {
+                true => YES,
+                false => NO,
+            }];
+        }
+    }
+
+    /// Sets whether the window has a shadow.
+    pub fn set_has_shadow(&self, shadow: bool) {
+        unsafe {
+            let _: () = msg_send![&*self.objc, setHasShadow:match shadow {
+                true => YES,
+                false => NO,
+            }];
+        }
+    }
+
     /// Return the objc ContentView from the window
     pub(crate) unsafe fn content_view(&self) -> id {
         let id: *mut Object = msg_send![&*self.objc, contentView];