Merge pull request #44 from Immington-Industries/view_properties_call…

…back

View properties callback

src/callback.rs

@@ -138,6 +138,9 @@ extern "C" {
 
     // Input device was destroyed. (Experimental)
     //fn wlc_set_input_destroyed_cb(cb: extern "C" fn(&LibinputDevice));
+
+    // View properties were updated
+    fn wlc_set_view_properties_updated_cb(cb: extern "C" fn(handle: WlcView, mask: ViewPropertyType));
 }
 
 /// Callback invoked when an output is created.
@@ -517,3 +520,14 @@ pub fn compositor_terminate(callback: extern "C" fn()) {
         wlc_set_compositor_terminate_cb(callback);
     }
 }
+
+/// Callback invoked when a WlcView has its properties updated.
+///
+/// # Arguments
+/// * `view`: View handle that is changing its properties
+/// * `mask`: Bitflag of which property is being updated
+pub fn view_properties_changed(callback: extern "C" fn(handle: WlcView, mask: ViewPropertyType)) {
+    unsafe {
+        wlc_set_view_properties_updated_cb(callback);
+    }
+}

src/types.rs

@@ -103,6 +103,19 @@ bitflags! {
     }
 }
 
+bitflags! {
+    /// Which view property is being updated
+    #[repr(C)]
+    pub flags ViewPropertyType: u32 {
+        /// View title is being updated
+        const PROPERTY_TITLE = 0,
+        /// View class is being updated
+        const PROPRETY_CLASS = 1,
+        /// View app id is being updated
+        const PROPERTY_APP_ID = 2,
+    }
+}
+
 bitflags! {
     /// Represents which keyboard meta keys are being pressed.
     #[repr(C)]