whisker-css 0.2.2

Type-safe CSS builder for Whisker. Mirrors the Lynx CSS surface.
Documentation 
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

//! `border` shorthand builder.

use crate::css::Css;
use crate::data_type::{Color, LengthPercentage};
use crate::keyword::BorderStyle;

/// Builder for the `border` family. Any subset of width/style/color
/// can be set; only the populated dimensions are pushed to the
/// style. Use [`Css::border`] to apply to all four sides;
/// [`Css::border_top`], [`Css::border_right`],
/// [`Css::border_bottom`], [`Css::border_left`] target one side.
#[derive(Clone, Debug, Default, PartialEq)]
pub struct Border {
    /// Width to apply.
    pub width: Option<LengthPercentage>,
    /// Line style to apply.
    pub style: Option<BorderStyle>,
    /// Color to apply.
    pub color: Option<Color>,
}

impl Border {
    /// An empty builder.
    pub fn new() -> Self {
        Self::default()
    }

    /// Set the border width.
    pub fn width(mut self, v: impl Into<LengthPercentage>) -> Self {
        self.width = Some(v.into());
        self
    }

    /// Set the border style.
    pub fn style(mut self, v: BorderStyle) -> Self {
        self.style = Some(v);
        self
    }

    /// Set the border style to [`BorderStyle::Solid`].
    pub fn solid(self) -> Self {
        self.style(BorderStyle::Solid)
    }

    /// Set the border style to [`BorderStyle::Dashed`].
    pub fn dashed(self) -> Self {
        self.style(BorderStyle::Dashed)
    }

    /// Set the border style to [`BorderStyle::Dotted`].
    pub fn dotted(self) -> Self {
        self.style(BorderStyle::Dotted)
    }

    /// Set the border color.
    pub fn color(mut self, v: Color) -> Self {
        self.color = Some(v);
        self
    }
}

impl Css {
    /// Sets `border` for all four sides. Equivalent to setting
    /// `border-top`, `border-right`, `border-bottom`, `border-left`
    /// individually.
    /// <https://lynxjs.org/api/css/properties/border>
    pub fn border(self, b: Border) -> Self {
        self.border_top(b.clone())
            .border_right(b.clone())
            .border_bottom(b.clone())
            .border_left(b)
    }

    /// Sets `border-top` only.
    /// <https://lynxjs.org/api/css/properties/border-top>
    pub fn border_top(mut self, b: Border) -> Self {
        if let Some(w) = b.width {
            self = self.border_top_width(w);
        }
        if let Some(s) = b.style {
            self = self.border_top_style(s);
        }
        if let Some(c) = b.color {
            self = self.border_top_color(c);
        }
        self
    }

    /// Sets `border-right` only.
    /// <https://lynxjs.org/api/css/properties/border-right>
    pub fn border_right(mut self, b: Border) -> Self {
        if let Some(w) = b.width {
            self = self.border_right_width(w);
        }
        if let Some(s) = b.style {
            self = self.border_right_style(s);
        }
        if let Some(c) = b.color {
            self = self.border_right_color(c);
        }
        self
    }

    /// Sets `border-bottom` only.
    /// <https://lynxjs.org/api/css/properties/border-bottom>
    pub fn border_bottom(mut self, b: Border) -> Self {
        if let Some(w) = b.width {
            self = self.border_bottom_width(w);
        }
        if let Some(s) = b.style {
            self = self.border_bottom_style(s);
        }
        if let Some(c) = b.color {
            self = self.border_bottom_color(c);
        }
        self
    }

    /// Sets `border-left` only.
    /// <https://lynxjs.org/api/css/properties/border-left>
    pub fn border_left(mut self, b: Border) -> Self {
        if let Some(w) = b.width {
            self = self.border_left_width(w);
        }
        if let Some(s) = b.style {
            self = self.border_left_style(s);
        }
        if let Some(c) = b.color {
            self = self.border_left_color(c);
        }
        self
    }
}

#[cfg(test)]
mod tests {
    use crate::data_type::Color;
    use crate::ext::*;
    use crate::keyword::BorderStyle;
    use crate::Css;

    use super::*;

    #[test]
    fn border_full() {
        let s = Css::new().border(
            Border::new()
                .width(px(1))
                .solid()
                .color(Color::hex(0xCCCCCC)),
        );
        assert_eq!(
            s.to_string(),
            "border-top-width: 1px; border-top-style: solid; border-top-color: rgb(204, 204, 204); border-right-width: 1px; border-right-style: solid; border-right-color: rgb(204, 204, 204); border-bottom-width: 1px; border-bottom-style: solid; border-bottom-color: rgb(204, 204, 204); border-left-width: 1px; border-left-style: solid; border-left-color: rgb(204, 204, 204);"
        );
    }

    #[test]
    fn border_partial_only_style() {
        let s = Css::new().border(Border::new().solid());
        assert_eq!(
            s.to_string(),
            "border-top-style: solid; border-right-style: solid; border-bottom-style: solid; border-left-style: solid;"
        );
    }

    #[test]
    fn border_bottom_overrides_border() {
        let s = Css::new()
            .border(
                Border::new()
                    .width(px(1))
                    .solid()
                    .color(Color::hex(0x000000)),
            )
            .border_bottom(Border::new().width(px(3)).color(Color::hex(0xFF0000)));
        // Last-write-wins keeps the first 3 sides at width 1px and
        // overrides bottom to 3px / red.
        let css = s.to_string();
        assert!(css.contains("border-bottom-width: 3px"));
        assert!(css.contains("border-bottom-color: rgb(255, 0, 0)"));
        assert!(css.contains("border-bottom-style: solid"));
        assert!(css.contains("border-top-width: 1px"));
    }

    #[test]
    fn border_style_constructors() {
        let solid = Border::new().solid();
        let dashed = Border::new().dashed();
        let dotted = Border::new().dotted();
        assert_eq!(solid.style, Some(BorderStyle::Solid));
        assert_eq!(dashed.style, Some(BorderStyle::Dashed));
        assert_eq!(dotted.style, Some(BorderStyle::Dotted));
    }

    #[test]
    fn border_per_side_individual() {
        let s = Css::new()
            .border_top(Border::new().width(px(1)).solid())
            .border_right(Border::new().width(px(2)).dashed())
            .border_bottom(Border::new().width(px(3)).dotted())
            .border_left(Border::new().width(px(4)).style(BorderStyle::Double));
        assert_eq!(
            s.to_string(),
            "border-top-width: 1px; border-top-style: solid; border-right-width: 2px; border-right-style: dashed; border-bottom-width: 3px; border-bottom-style: dotted; border-left-width: 4px; border-left-style: double;"
        );
    }
}