api/wayland: core context

src/api/wayland/context.rs

@@ -0,0 +1,42 @@
+use wayland_client::EventIterator;
+use wayland_client::wayland::get_display;
+use wayland_client::wayland::compositor::WlCompositor;
+use wayland_client::wayland::seat::WlSeat;
+use wayland_client::wayland::shell::WlShell;
+use wayland_client::wayland::shm::WlShm;
+use wayland_client::wayland::subcompositor::WlSubcompositor;
+
+lazy_static! {
+    pub static ref WAYLAND_CONTEXT: Option<WaylandContext> = {
+        WaylandContext::init()
+    };
+}
+
+wayland_env!(InnerEnv,
+    compositor: WlCompositor,
+    seat: WlSeat,
+    shell: WlShell,
+    shm: WlShm,
+    subcompositor: WlSubcompositor
+);
+
+pub struct WaylandContext {
+    inner: InnerEnv,
+    iterator: EventIterator
+}
+
+impl WaylandContext {
+    fn init() -> Option<WaylandContext> {
+        let display = match get_display() {
+            Some(display) => display,
+            None => return None
+        };
+
+        let (inner_env, iterator) = InnerEnv::init(display);
+
+        Some(WaylandContext {
+            inner: inner_env,
+            iterator: iterator
+        })
+    }
+}

src/api/wayland/mod.rs

@@ -6,10 +6,11 @@ pub use self::window::{PollEventsIterator, WaitEventsIterator, Window, WindowPro
 extern crate wayland_kbd;
 extern crate wayland_window;
 
+mod context;
 mod monitor;
 mod window;
 
 #[inline]
 pub fn is_available() -> bool {
-    false
+    context::WAYLAND_CONTEXT.is_some()
 }