1 files changed, 91 insertions, 0 deletions
diff --git a/src/components.rs b/src/components.rs
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+++ b/src/components.rs
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+/*
+ * bb
+ *
+ * Copyright 2019 Manos Pitsidianakis
+ *
+ * This file is part of bb.
+ *
+ * bb is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * bb is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with bb. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*!
+Components are ways to handle application data. They can draw on the terminal and receive events, but also do other stuff as well. (For example, see the `notifications` module.)
+
+See the `Component` Trait for more details.
+*/
+
+use crate::state::*;
+use crate::terminal::*;
+mod utilities;
+pub use utilities::*;
+
+mod kernel;
+pub use kernel::*;
+pub mod processes;
+pub use processes::*;
+
+use std::collections::{HashMap, VecDeque};
+use std::fmt;
+use std::fmt::{Debug, Display};
+
+use super::{Key, UIEvent};
+// The upper and lower boundary char.  const HORZ_BOUNDARY: char = '─';
+/// The left and right boundary char.  const VERT_BOUNDARY: char = '│';
+
+pub type ShortcutMap = HashMap<&'static str, Key>;
+pub type ShortcutMaps = HashMap<String, ShortcutMap>;
+
+/// Types implementing this Trait can draw on the terminal and receive events.
+/// If a type wants to skip drawing if it has not changed anything, it can hold some flag in its
+/// fields (eg self.dirty = false) and act upon that in their `draw` implementation.
+pub trait Component: Display + Debug + Send {
+    fn draw(
+        &mut self,
+        grid: &mut CellBuffer,
+        area: Area,
+        dirty_areas: &mut VecDeque<Area>,
+        tick: bool,
+    );
+    fn process_event(&mut self, event: &mut UIEvent, ui_mode: &mut UIMode);
+    fn is_dirty(&self) -> bool {
+        true
+    }
+    fn set_dirty(&mut self);
+    fn get_shortcuts(&self) -> ShortcutMaps {
+        Default::default()
+    }
+}
+
+pub fn create_box(grid: &mut CellBuffer, area: Area) {
+    if !is_valid_area!(area) {
+        return;
+    }
+    let upper_left = upper_left!(area);
+    let bottom_right = bottom_right!(area);
+
+    /*for x in get_x(upper_left)..=get_x(bottom_right) {
+        grid[(x, get_y(upper_left))].set_ch(HORZ_BOUNDARY);
+        grid[(x, get_y(bottom_right))].set_ch(HORZ_BOUNDARY);
+        grid[(x, get_y(bottom_right))].set_ch('▒');
+        grid[(x, get_y(bottom_right))].set_fg(Color::Byte(240));
+    }
+    */
+
+    for y in get_y(upper_left)..=get_y(bottom_right) {
+        //grid[(get_x(upper_left), y)].set_ch(VERT_BOUNDARY);
+        grid[(get_x(bottom_right), y)]
+            .set_ch('▒')
+            .set_fg(Color::Byte(240));
+    }
+}