euv_core/event/handler/
struct.rs

1use crate::*;
2
3/// Inner storage for a native event callback closure.
4///
5/// Boxes a `dyn FnMut(NativeEvent)` so it can be stored behind a raw pointer.
6/// Allocated via `Box::leak` and lives for the remainder of the program.
7pub(crate) struct NativeEventCallbackInner {
8    /// The boxed callback closure.
9    pub(crate) callback: Box<dyn FnMut(NativeEvent)>,
10}
11
12/// A wrapper around an event callback.
13///
14/// Stores the event name and a raw pointer to the heap-allocated callback closure.
15///
16/// SAFETY: The inner pointer is allocated via `Box::leak` and lives for the
17/// entire program. This is safe in single-threaded WASM contexts where no
18/// concurrent access can occur.
19#[derive(CustomDebug)]
20pub struct NativeEventHandler {
21    /// The name of the event (e.g., "click", "input").
22    pub(crate) event_name: String,
23    /// Raw pointer to the heap-allocated callback closure inner state.
24    ///
25    /// SAFETY: Allocated via `Box::leak`, valid for the program lifetime.
26    #[debug(skip)]
27    pub(crate) callback: *mut NativeEventCallbackInner,
28}
29
30/// Data associated with a mouse event.
31///
32/// Captures coordinates, buttons, and modifier key states.
33#[derive(Clone, Data, Debug, Default, Eq, PartialEq)]
34pub struct NativeMouseEvent {
35    /// The X coordinate relative to the viewport.
36    #[get(pub, type(copy))]
37    #[set(pub)]
38    pub(crate) client_x: i32,
39    /// The Y coordinate relative to the viewport.
40    #[get(pub, type(copy))]
41    #[set(pub)]
42    pub(crate) client_y: i32,
43    /// The X coordinate relative to the screen.
44    #[get(pub, type(copy))]
45    #[set(pub)]
46    pub(crate) screen_x: i32,
47    /// The Y coordinate relative to the screen.
48    #[get(pub, type(copy))]
49    #[set(pub)]
50    pub(crate) screen_y: i32,
51    /// Which mouse button was pressed.
52    #[get(pub, type(copy))]
53    #[set(pub)]
54    pub(crate) button: i16,
55    /// Bitmask of pressed buttons.
56    #[get(pub, type(copy))]
57    #[set(pub)]
58    pub(crate) buttons: u16,
59    /// Whether the ctrl key was pressed.
60    #[get(pub, type(copy))]
61    #[set(pub)]
62    pub(crate) ctrl_key: bool,
63    /// Whether the shift key was pressed.
64    #[get(pub, type(copy))]
65    #[set(pub)]
66    pub(crate) shift_key: bool,
67    /// Whether the alt key was pressed.
68    #[get(pub, type(copy))]
69    #[set(pub)]
70    pub(crate) alt_key: bool,
71    /// Whether the meta key was pressed.
72    #[get(pub, type(copy))]
73    #[set(pub)]
74    pub(crate) meta_key: bool,
75}
76
77/// Data associated with an input event.
78///
79/// Contains the current value and the type of input change.
80#[derive(Clone, Data, Debug, Default, Eq, New, PartialEq)]
81pub struct NativeInputEvent {
82    /// The current value of the input element.
83    #[get(pub)]
84    #[set(pub)]
85    value: String,
86    /// The type of input (e.g., "insertText", "deleteContentBackward").
87    #[get(pub)]
88    #[set(pub)]
89    input_type: String,
90}
91
92/// Data associated with a keyboard event.
93///
94/// Captures the pressed key, physical code, location, and modifier states.
95#[derive(Clone, Data, Debug, Default, Eq, PartialEq)]
96pub struct NativeKeyboardEvent {
97    /// The key that was pressed.
98    #[get(pub)]
99    #[set(pub)]
100    pub(crate) key: String,
101    /// The numeric code of the key.
102    #[get(pub)]
103    #[set(pub)]
104    pub(crate) code: String,
105    /// The physical key location.
106    #[get(pub, type(copy))]
107    #[set(pub)]
108    pub(crate) location: u32,
109    /// Whether the ctrl key was pressed.
110    #[get(pub, type(copy))]
111    #[set(pub)]
112    pub(crate) ctrl_key: bool,
113    /// Whether the shift key was pressed.
114    #[get(pub, type(copy))]
115    #[set(pub)]
116    pub(crate) shift_key: bool,
117    /// Whether the alt key was pressed.
118    #[get(pub, type(copy))]
119    #[set(pub)]
120    pub(crate) alt_key: bool,
121    /// Whether the meta key was pressed.
122    #[get(pub, type(copy))]
123    #[set(pub)]
124    pub(crate) meta_key: bool,
125    /// Whether the key is being held down.
126    #[get(pub, type(copy))]
127    #[set(pub)]
128    pub(crate) repeat: bool,
129}
130
131/// Data associated with a focus event.
132///
133/// Indicates whether the element is gaining or losing focus.
134#[derive(Clone, Data, Debug, Default, Eq, New, PartialEq)]
135pub struct NativeFocusEvent {
136    /// Whether the element is receiving focus.
137    #[get(pub, type(copy))]
138    #[set(pub)]
139    is_focus: bool,
140    /// Whether the element is losing focus.
141    #[get(pub, type(copy))]
142    #[set(pub)]
143    is_blur: bool,
144}
145
146/// Data associated with a form submit event.
147///
148/// Identifies the element that triggered the submission.
149#[derive(Clone, Data, Debug, Default, Eq, New, PartialEq)]
150pub struct NativeSubmitEvent {
151    /// The submitter element identifier.
152    #[get(pub)]
153    #[set(pub)]
154    submitter: Option<String>,
155}
156
157/// Data associated with a change event.
158///
159/// Contains the new value and checked state for form controls.
160#[derive(Clone, Data, Debug, Default, Eq, New, PartialEq)]
161pub struct NativeChangeEvent {
162    /// The new value after the change.
163    #[get(pub)]
164    #[set(pub)]
165    value: String,
166    /// Whether the element is checked (for checkboxes/radios).
167    #[get(pub, type(copy))]
168    #[set(pub)]
169    checked: bool,
170}
171
172/// Data associated with a drag event.
173///
174/// Captures the drag position and available data transfer types.
175#[derive(Clone, Data, Debug, Default, Eq, New, PartialEq)]
176pub struct NativeDragEvent {
177    /// The X coordinate of the drag.
178    #[get(pub, type(copy))]
179    #[set(pub)]
180    client_x: i32,
181    /// The Y coordinate of the drag.
182    #[get(pub, type(copy))]
183    #[set(pub)]
184    client_y: i32,
185    /// The data transfer types available.
186    #[get(pub)]
187    #[set(pub)]
188    types: Vec<String>,
189}
190
191/// Data associated with a touch event.
192///
193/// Captures the number of touch points and the first touch coordinates.
194#[derive(Clone, Data, Debug, Default, Eq, New, PartialEq)]
195pub struct NativeTouchEvent {
196    /// The number of touch points.
197    #[get(pub, type(copy))]
198    #[set(pub)]
199    touches_count: u32,
200    /// The X coordinate of the first touch.
201    #[get(pub, type(copy))]
202    #[set(pub)]
203    client_x: i32,
204    /// The Y coordinate of the first touch.
205    #[get(pub, type(copy))]
206    #[set(pub)]
207    client_y: i32,
208}
209
210/// Data associated with a wheel event.
211///
212/// Captures scroll deltas and the delta mode.
213#[derive(Clone, Data, Debug, Default, New, PartialEq)]
214pub struct NativeWheelEvent {
215    /// Horizontal scroll delta.
216    #[get(pub, type(copy))]
217    #[set(pub)]
218    delta_x: f64,
219    /// Vertical scroll delta.
220    #[get(pub, type(copy))]
221    #[set(pub)]
222    delta_y: f64,
223    /// Scroll delta mode.
224    #[get(pub, type(copy))]
225    #[set(pub)]
226    delta_mode: u32,
227}
228
229/// Data associated with a clipboard event.
230///
231/// Contains the clipboard text data if available.
232#[derive(Clone, Data, Debug, Default, Eq, New, PartialEq)]
233pub struct NativeClipboardEvent {
234    /// The clipboard data if available.
235    #[get(pub)]
236    #[set(pub)]
237    data: Option<String>,
238}
239
240/// Data associated with a media event.
241///
242/// Identifies the type of media event that occurred.
243#[derive(Clone, Data, Debug, Default, Eq, New, PartialEq)]
244pub struct NativeMediaEvent {
245    /// The type of media event (e.g., "play", "pause", "ended").
246    #[get(pub)]
247    #[set(pub)]
248    event_type: String,
249}
euv_core/event/handler/struct.rs

euv_core/event/handler/
struct.rs
