move queue into its own file, and optimize it

1 files changed, 37 insertions, 0 deletions

diff --git a/src/queue.rs b/src/queue.rs
new file mode 100755
index 0000000..821c508
--- /dev/null
+++ b/src/queue.rs
@@ -0,0 +1,37 @@
+use mpd::Song;
+
+#[derive(Debug)]
+pub struct Queue {
+    pub list: Vec<Song>,
+    pub index: usize,
+}
+
+impl Queue {
+    pub fn new() -> Self {
+        Queue {
+            list: Vec::new(),
+            index: 0,
+        }
+    }
+
+    // Go to next item in list
+    pub fn next(&mut self) {
+        let len = self.list.len();
+        if len != 0 {
+            if self.index < len - 1 {
+                self.index += 1;
+            }
+        }
+    }
+
+    /// Go to previous item in list
+    pub fn prev(&mut self) {
+        if self.index != 0 {
+            self.index -= 1;
+        }
+    }
+
+    pub fn reset_index(&mut self) {
+        self.index = 0;
+    }
+}