From 975aabe3362baf56e47d0ba022f7ea35f7bc5c7f Mon Sep 17 00:00:00 2001
From: Matias Linares <matiaslina@openmailbox.org>
Date: Mon, 9 Nov 2015 05:53:12 -0300
Subject: ExecFn Rewrite.

This now allows to call a ExecFn with a &mut DotWM by parameter. This help
to do some things like do the window swapping. through mod4 + tab.

Also the bindings are not longer on the wm, because this generates some problems
with the ExecFn.

Also, now it's posible to resize the windows :)
---
 src/dotwm.rs | 49 +++++++++++++++++++++++++++++--------------------
 1 file changed, 29 insertions(+), 20 deletions(-)

(limited to 'src/dotwm.rs')

diff --git a/src/dotwm.rs b/src/dotwm.rs
index 77f09b3..952fc8c 100644
--- a/src/dotwm.rs
+++ b/src/dotwm.rs
@@ -2,15 +2,11 @@ use x11::xlib;
 use x11::xlib::{
     Display,
     XErrorEvent,
-    XEvent,
-
-    GrabModeAsync,
 };
 
 use safe_x11::{
     open_display,
     close_display,
-    grab_key,
 };
 
 use safe_x11::window::XWindow;
@@ -18,7 +14,6 @@ use safe_x11::window::XWindow;
 use std::ptr;
 use std::process::exit;
 use std::mem::uninitialized;
-use std::collections::HashMap;
 use libc::c_int;
 
 #[allow(unused_variables)]
@@ -33,13 +28,9 @@ unsafe extern "C" fn error_handler(d: *mut Display, evptr: *mut XErrorEvent) ->
     0
 }
 
-/// Defines a callback to call no certains events.
-pub type ExecFn = fn(&DotWM, XEvent, &[String]) -> bool;
-
 pub struct DotWM {
     pub display: *mut Display,
     // Map with the keys as (key, mod)
-    bindings: HashMap<(u32, u32), (ExecFn, Vec<String>)>,
     cw_idx: usize,
     pub window_list: Vec<XWindow>,
 }
@@ -60,7 +51,6 @@ impl DotWM {
 
         DotWM {
             display: d,
-            bindings: HashMap::new(),
             cw_idx: 0,
             window_list: vec![],
         }
@@ -87,6 +77,7 @@ impl DotWM {
     /// dotwm.add_binding(keysym::XK_Return, xlib::Mod4Mask, exec,
     ///                   &["xterm"]);
     /// ```
+    /*
     pub fn add_binding(&mut self, key: u32, modifiers: u32, func: ExecFn, args: &[&str]) {
         grab_key(self.display, key, modifiers, true, GrabModeAsync, GrabModeAsync);        
         let mut v = vec![];
@@ -95,13 +86,16 @@ impl DotWM {
         }
         self.bindings.insert((key, modifiers), (func, v));
     }
+    */
 
+    /*
     pub fn exec_func(&mut self, key: u32, modifiers: u32, ev: xlib::XEvent) {
         if let Some(&(func, ref args)) = self.bindings.get(&(key, modifiers)) {
             let v = args.clone();
             func(&self, ev, &v);
         }
     }
+    */
 
     pub fn add_window(&mut self, w: xlib::Window) {
         self.unfocus_current_window();
@@ -115,7 +109,6 @@ impl DotWM {
     }
 
     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 {
@@ -125,7 +118,6 @@ 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) => { 
@@ -147,23 +139,40 @@ impl DotWM {
         w.raise();
     }
 
+    /// Find a given window and returns it's position on the window_list.
     pub fn find_window(&self, w: xlib::Window) -> Option<usize> {
         self.window_list.iter().position(|xw| xw.inner == w)
     }
 
+    /// Focus the next window.
+    ///
+    /// There're 3 posibilities. There's no window, there's one window or there
+    /// are more windows.
+    pub fn focus_next(&mut self) {
+        if self.window_list.len() > 0 {
+            // Unfocus the current window.
+            let prev_win = &self.window_list[self.cw_idx];
+            prev_win.unfocus();
+
+            // And give focus to the next one.
+            let next_win_idx = if self.cw_idx < self.window_list.len() - 1 {
+                self.cw_idx + 1
+            } else {
+                0
+            };
+
+            let curr_win = &self.window_list[next_win_idx];
+            curr_win.focus();
+            self.cw_idx = next_win_idx;
+        }
+    }
 
     fn focus_current_window(&self) {
-        if let Some(win) = self.current_window() {
-            win.set_border_width(1);
-            win.set_border_color("red");
-        }
+        self.current_window().map(|x| x.focus());
     }
 
     fn unfocus_current_window(&self) {
-        if let Some(win) = self.current_window() {
-            win.set_border_width(1);
-            win.set_border_color("black");
-        }
+        self.current_window().map(|x| x.unfocus());
     }
 }
 
-- 
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