elvis_core/
gesture.rs

1//! Gestrue Trait
2use crate::{Closure, Node, StateKV};
3use std::{collections::HashMap, sync::Arc};
4
5/// Gestures
6/// Construct gestures
7macro_rules! construct_gesture {
8    ($(($name:tt, $doc:expr),)*) => {
9        /// Elvis Gestures
10        #[derive(Debug, Hash, PartialEq, Eq, Clone)]
11        pub enum Gesture {
12            $(
13                #[doc=$doc]
14                $name,
15            )*
16        }
17    };
18}
19
20construct_gesture! {
21    (Tap, "Trigger when tap widget"),
22    (LongTap, "Trigger when long tap widget"),
23}
24
25/// Gesture HashMap
26pub type GestureKV = HashMap<Gesture, Closure<StateKV>>;
27
28/// Gestrue Detector
29#[derive(Clone)]
30pub struct GestureDetector<W> {
31    child: W,
32    gesture: GestureKV,
33}
34
35impl<W> GestureDetector<W>
36where
37    W: Into<Node>,
38{
39    /// New Gesture Detector
40    pub fn new(n: W) -> GestureDetector<W> {
41        GestureDetector {
42            child: n,
43            gesture: HashMap::new(),
44        }
45    }
46
47    /// Register method
48    pub fn register(mut self, gesture: Gesture, callback: fn(StateKV) -> ()) -> Self {
49        self.gesture
50            .entry(gesture)
51            .or_insert_with(|| Arc::new(callback));
52
53        self
54    }
55
56    /// Get method
57    pub fn get(&mut self, name: Gesture) -> Option<&Closure<StateKV>> {
58        if let Some(f) = self.gesture.get(&Box::new(name)) {
59            Some(f)
60        } else {
61            None
62        }
63    }
64
65    /// Remove and return method
66    pub fn remove(&mut self, name: Gesture) -> Option<Closure<StateKV>> {
67        self.gesture.remove(&Box::new(name))
68    }
69
70    /// List methods and closures
71    pub fn list(&self) -> Vec<(&Gesture, &Closure<StateKV>)> {
72        self.gesture
73            .iter()
74            .map(|(m, c)| (m, c))
75            .collect::<Vec<(&Gesture, &Closure<StateKV>)>>()
76    }
77}
78
79impl<W> Into<Node> for GestureDetector<W>
80where
81    W: Into<Node>,
82{
83    fn into(self) -> Node {
84        let mut n = self.child.into();
85        n.gesture = Some(self.gesture);
86        n
87    }
88}
elvis_core/gesture.rs

elvis_core/
gesture.rs
