Focus handling.

For now this have some bugs. Some complex programs (i.e. thunar, firefox) will spawn
a lot of XCreateEvents and the last window it's not focused correctly.
Also the enter notify should work on an input instead hovering the window

1 files changed, 36 insertions, 1 deletions

diff --git a/src/dotwm.rs b/src/dotwm.rs
index 2d64584..77f09b3 100644
--- a/src/dotwm.rs
+++ b/src/dotwm.rs
@@ -104,14 +104,18 @@ impl DotWM {
     }
 
     pub fn add_window(&mut self, w: xlib::Window) {
+        self.unfocus_current_window();
         if let Some(w) = XWindow::new(self.display, w) {
+            w.select_input(xlib::EnterWindowMask);
             self.window_list.push(w);
             // Last windows get focus.
             self.cw_idx = self.window_list.len() - 1;
+            self.focus_current_window();
         }
     }
 
     pub fn current_window(&self) -> Option<&XWindow> {
+        println!("trying to get {} from list of len {}", self.cw_idx, self.window_list.len());
         if self.cw_idx < self.window_list.len() {
             self.window_list.get(self.cw_idx)
         } else {
@@ -121,15 +125,46 @@ impl DotWM {
 
     pub fn remove_window(&mut self, w: xlib::Window) {
         let pos = self.window_list.iter().position(|xw| xw.inner == w);
+        println!("Removing widnow {}: pos: {:?}", w, pos);
         
         match pos {
             Some(idx) => { 
+                let new_idx = if idx == 0 { usize::max_value() } else { idx - 1 };
                 self.window_list.remove(idx);
-                self.cw_idx = usize::max_value();
+                self.cw_idx = new_idx;
+                self.focus_current_window();
             },
             None => (),
         }
     }
+
+    pub fn change_focus_of(&mut self, idx: usize) {
+        let w = &self.window_list[idx];
+        self.unfocus_current_window();
+        self.cw_idx = idx;
+        w.set_border_width(1);
+        w.set_border_color("red");
+        w.raise();
+    }
+
+    pub fn find_window(&self, w: xlib::Window) -> Option<usize> {
+        self.window_list.iter().position(|xw| xw.inner == w)
+    }
+
+
+    fn focus_current_window(&self) {
+        if let Some(win) = self.current_window() {
+            win.set_border_width(1);
+            win.set_border_color("red");
+        }
+    }
+
+    fn unfocus_current_window(&self) {
+        if let Some(win) = self.current_window() {
+            win.set_border_width(1);
+            win.set_border_color("black");
+        }
+    }
 }
 
 impl Drop for DotWM {