1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
use dioxus::prelude::*;
use freya_elements::{
    elements as dioxus_elements,
    events::{
        keyboard::Key,
        KeyboardData,
        MouseEvent,
    },
};
use freya_hooks::{
    use_applied_theme,
    use_editable,
    use_focus,
    use_platform,
    EditableConfig,
    EditableEvent,
    EditableMode,
    InputTheme,
    InputThemeWith,
    TextEditor,
};
use winit::window::CursorIcon;

/// Enum to declare is [`Input`] hidden.
#[derive(Default, Clone, PartialEq)]
pub enum InputMode {
    /// The input text is shown
    #[default]
    Shown,
    /// The input text is obfuscated with a character
    Hidden(char),
}

impl InputMode {
    pub fn new_password() -> Self {
        Self::Hidden('*')
    }
}

/// Indicates the current status of the Input.
#[derive(Debug, Default, PartialEq, Clone, Copy)]
pub enum InputStatus {
    /// Default state.
    #[default]
    Idle,
    /// Mouse is hovering the input.
    Hovering,
}

/// Properties for the [`Input`] component.
#[derive(Props, Clone, PartialEq)]
pub struct InputProps {
    /// Theme override.
    pub theme: Option<InputThemeWith>,
    /// Text to show for when there is no value
    pub placeholder: Option<String>,
    /// Current value of the Input
    pub value: String,
    /// Handler for the `onchange` event.
    pub onchange: EventHandler<String>,
    /// Display mode for Input. By default, input text is shown as it is provided.
    #[props(default = InputMode::Shown, into)]
    pub mode: InputMode,
    /// Automatically focus this Input upon creation. Default `false`.
    #[props(default = false)]
    pub auto_focus: bool,
}

/// Small box to edit text.
///
/// # Styling
/// Inherits the [`InputTheme`](freya_hooks::InputTheme) theme.
///
/// # Example
///
/// ```rust,no_run
/// # use freya::prelude::*;
/// fn app() -> Element {
///     let mut value = use_signal(String::new);
///
///     rsx!(
///         label {
///             "Value: {value}"
///         }
///         Input {
///             value: value.read().clone(),
///             onchange: move |e| {
///                  value.set(e)
///             }
///         }
///     )
/// }
/// ```
#[allow(non_snake_case)]
pub fn Input(
    InputProps {
        theme,
        value,
        onchange,
        mode,
        placeholder,
        auto_focus,
    }: InputProps,
) -> Element {
    let platform = use_platform();
    let mut status = use_signal(InputStatus::default);
    let mut editable = use_editable(
        || EditableConfig::new(value.to_string()),
        EditableMode::MultipleLinesSingleEditor,
    );
    let theme = use_applied_theme!(&theme, input);
    let mut focus = use_focus();

    let is_focused = focus.is_focused();
    let display_placeholder = value.is_empty() && placeholder.is_some() && !is_focused;

    if &value != editable.editor().read().rope() {
        editable.editor_mut().write().set(&value);
    }

    use_drop(move || {
        if *status.peek() == InputStatus::Hovering {
            platform.set_cursor(CursorIcon::default());
        }
    });

    let onkeydown = move |e: Event<KeyboardData>| {
        if e.data.key != Key::Enter && e.data.key != Key::Tab {
            e.stop_propagation();
            editable.process_event(&EditableEvent::KeyDown(e.data));
            onchange.call(editable.editor().peek().to_string());
        }
    };

    let onkeyup = move |e: Event<KeyboardData>| {
        e.stop_propagation();
        editable.process_event(&EditableEvent::KeyUp(e.data));
    };

    let onmousedown = move |e: MouseEvent| {
        if !display_placeholder {
            editable.process_event(&EditableEvent::MouseDown(e.data, 0));
        }
        focus.focus();
    };

    let onmousemove = move |e: MouseEvent| {
        editable.process_event(&EditableEvent::MouseMove(e.data, 0));
    };

    let onmouseenter = move |_| {
        platform.set_cursor(CursorIcon::Text);
        *status.write() = InputStatus::Hovering;
    };

    let onmouseleave = move |_| {
        platform.set_cursor(CursorIcon::default());
        *status.write() = InputStatus::default();
    };

    let onglobalclick = move |_| match *status.read() {
        InputStatus::Idle if focus.is_focused() => {
            focus.unfocus();
            editable.process_event(&EditableEvent::Click);
        }
        InputStatus::Hovering => {
            editable.process_event(&EditableEvent::Click);
        }
        _ => {}
    };

    let a11y_id = focus.attribute();
    let cursor_reference = editable.cursor_attr();
    let highlights = editable.highlights_attr(0);

    let (background, cursor_char) = if focus.is_focused() {
        (
            theme.hover_background,
            editable.editor().read().visible_cursor_pos().to_string(),
        )
    } else {
        (theme.background, "none".to_string())
    };
    let InputTheme {
        border_fill,
        width,
        margin,
        corner_radius,
        font_theme,
        placeholder_font_theme,
        shadow,
        ..
    } = theme;

    let color = if display_placeholder {
        placeholder_font_theme.color
    } else {
        font_theme.color
    };

    let text = match (mode, placeholder) {
        (_, Some(placeholder)) if display_placeholder => placeholder,
        (InputMode::Hidden(ch), _) => ch.to_string().repeat(value.len()),
        (InputMode::Shown, _) => value,
    };

    rsx!(
        rect {
            width: "{width}",
            direction: "vertical",
            color: "{color}",
            background: "{background}",
            border: "1 solid {border_fill}",
            shadow: "{shadow}",
            corner_radius: "{corner_radius}",
            margin: "{margin}",
            main_align: "center",
            cursor_reference,
            a11y_id,
            a11y_role: "textInput",
            a11y_auto_focus: "{auto_focus}",
            onkeydown,
            onkeyup,
            paragraph {
                margin: "8 12",
                onglobalclick,
                onmouseenter,
                onmouseleave,
                onmousedown,
                onmousemove,
                width: "100%",
                cursor_id: "0",
                cursor_index: "{cursor_char}",
                cursor_mode: "editable",
                cursor_color: "{color}",
                max_lines: "1",
                highlights,
                text {
                    "{text}"
                }
            }
        }
    )
}

#[cfg(test)]
mod test {
    use freya::prelude::*;
    use freya_testing::prelude::*;

    #[tokio::test]
    pub async fn input() {
        fn input_app() -> Element {
            let mut value = use_signal(|| "Hello, Worl".to_string());

            rsx!(Input {
                value: value.read().clone(),
                onchange: move |new_value| {
                    value.set(new_value);
                }
            },)
        }

        let mut utils = launch_test(input_app);
        let root = utils.root();
        let text = root.get(0).get(0).get(0);
        utils.wait_for_update().await;

        // Default value
        assert_eq!(text.get(0).text(), Some("Hello, Worl"));

        assert_eq!(utils.focus_id(), ACCESSIBILITY_ROOT_ID);

        // Focus the input in the end of the text
        utils.push_event(PlatformEvent::Mouse {
            name: EventName::MouseDown,
            cursor: (115., 25.).into(),
            button: Some(MouseButton::Left),
        });
        utils.wait_for_update().await;
        utils.wait_for_update().await;
        utils.wait_for_update().await;

        assert_ne!(utils.focus_id(), ACCESSIBILITY_ROOT_ID);

        // Write "d"
        utils.push_event(PlatformEvent::Keyboard {
            name: EventName::KeyDown,
            key: Key::Character("d".to_string()),
            code: Code::KeyD,
            modifiers: Modifiers::default(),
        });
        utils.wait_for_update().await;

        // Check that "d" has been written into the input.
        assert_eq!(text.get(0).text(), Some("Hello, World"));
    }
}