| Total Complexity | 53 |
| Total Lines | 409 |
| Duplicated Lines | 0 % |
| Changes | 13 | ||
| Bugs | 1 | Features | 0 |
Complex classes like DBColour often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use DBColour, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 16 | class DBColour extends Color |
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| 17 | { |
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| 18 | private static $colour_picker_field_class_name = SelectedColourPickerFormFieldDropdown::class; |
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| 19 | |||
| 20 | /** |
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| 21 | * please set |
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| 22 | * must be defined as #AABB99 (hex codes). |
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| 23 | * Needs to be set like this: |
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| 24 | * ```php |
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| 25 | * [ |
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| 26 | * '#fff000' => 'My Colour 1', |
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| 27 | * '#fff000' => 'My Colour 2', |
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| 28 | * ] |
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| 29 | * |
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| 30 | * ``` |
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| 31 | * |
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| 32 | * @var array |
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| 33 | */ |
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| 34 | private static $colours = []; |
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| 35 | |||
| 36 | /** |
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| 37 | * You can link colours to other colours. |
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| 38 | * e.g. |
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| 39 | * ```php |
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| 40 | * '#ffffff' => [ |
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| 41 | * 'link' => '#000000', |
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| 42 | * 'foreground' => '#000000', |
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| 43 | * 'background' => '#000000', |
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| 44 | * ], |
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| 45 | * '#aabbcc' => [ |
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| 46 | * 'link' => '#123123', |
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| 47 | * 'foreground' => '#123312', |
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| 48 | * 'somethingelse' => '#000000', |
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| 49 | * ], |
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| 50 | * ``` |
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| 51 | * |
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| 52 | * @var array |
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| 53 | */ |
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| 54 | |||
| 55 | private static $linked_colours = [ |
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| 56 | ]; |
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| 57 | |||
| 58 | protected const DEFAULT_COLOURS = [ |
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| 59 | '#FF0000' => 'Red', |
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| 60 | '#0000FF' => 'Blue', |
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| 61 | '#00FF00' => 'Green', |
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| 62 | ]; |
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| 63 | |||
| 64 | /** |
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| 65 | * please set. |
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| 66 | * |
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| 67 | * @var string` |
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| 68 | */ |
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| 69 | protected const CSS_CLASS_PREFIX = 'db-colour'; |
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| 70 | |||
| 71 | /** |
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| 72 | * please set. |
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| 73 | * |
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| 74 | * @var bool |
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| 75 | */ |
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| 76 | protected const IS_LIMITED_TO_OPTIONS = true; |
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| 77 | |||
| 78 | /** |
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| 79 | * please set. |
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| 80 | * |
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| 81 | * @var bool |
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| 82 | */ |
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| 83 | protected const IS_BG_COLOUR = true; |
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| 84 | |||
| 85 | private static $casting = [ |
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| 86 | // related colours |
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| 87 | 'FontColour' => 'Varchar', |
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| 88 | 'BackgroundColour' => 'Varchar', |
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| 89 | 'ReadableColour' => 'Varchar', |
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| 90 | 'RelatedColourByName' => 'Varchar', |
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| 91 | 'Inverted' => 'Varchar', |
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| 92 | // css |
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| 93 | 'CssVariableDefinition' => 'HTMLText', |
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| 94 | 'CssClass' => 'Varchar', |
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| 95 | 'CssClassAlternative' => 'Boolean', |
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| 96 | // booleans |
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| 97 | 'IsDarkColour' => 'Boolean', |
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| 98 | 'IsLightColour' => 'Boolean', |
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| 99 | |||
| 100 | 'Nice' => 'HTMLText', |
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| 101 | ]; |
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| 102 | |||
| 103 | |||
| 104 | public function __construct($name = null, $options = []) |
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| 105 | { |
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| 106 | parent::__construct($name, $options); |
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| 107 | } |
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| 108 | |||
| 109 | |||
| 110 | public static function my_colours(): array |
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| 111 | { |
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| 112 | return static::get_colour_as_db_field('')->getColours(); |
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| 113 | } |
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| 114 | |||
| 115 | public static function get_swatches_field(string $name, string $value): LiteralField |
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| 116 | { |
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| 117 | return SelectedColourPickerFormFieldSwatches::get_swatches_field( |
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| 118 | (string) $name, |
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| 119 | (string) $value, |
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| 120 | static::my_colours(), |
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| 121 | static::IS_BG_COLOUR |
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| 122 | ); |
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| 123 | } |
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| 124 | |||
| 125 | /** |
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| 126 | * |
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| 127 | * @param string $name |
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| 128 | * @param string $title |
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| 129 | * @return FormField |
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| 130 | */ |
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| 131 | public static function get_dropdown_field(string $name, ?string $title = '', ?bool $isBackgroundColour = null) |
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| 132 | { |
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| 133 | if($isBackgroundColour === null) { |
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| 134 | $isBackgroundColour = static::IS_BG_COLOUR; |
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| 135 | } |
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| 136 | $className = Config::inst()->get(static::class, 'colour_picker_field_class_name'); |
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| 137 | return $className::create( |
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| 138 | $name, |
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| 139 | $title |
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| 140 | ) |
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| 141 | ->setSource(static::my_colours()) |
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| 142 | ->setLimitedToOptions(static::IS_LIMITED_TO_OPTIONS) |
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| 143 | ->setIsBgColour($isBackgroundColour); |
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| 144 | ; |
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| 145 | } |
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| 146 | |||
| 147 | |||
| 148 | public static function get_colours_for_dropdown(?bool $isBackgroundColour = null): ?array |
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| 149 | { |
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| 150 | if($isBackgroundColour === null) { |
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| 151 | $isBackgroundColour = static::IS_BG_COLOUR; |
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| 152 | } |
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| 153 | $colours = static::my_colours(); |
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| 154 | if (!empty($colours)) { |
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| 155 | $array = []; |
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| 156 | |||
| 157 | foreach ($colours as $code => $label) { |
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| 158 | $textcolour = static::get_font_colour((string) $code) ; |
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| 159 | if($isBackgroundColour) { |
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| 160 | $array[$code] = [ |
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| 161 | 'label' => $label, |
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| 162 | 'background_css' => $code, |
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| 163 | 'colour_css' => $textcolour, |
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| 164 | 'sample_text' => 'Aa', |
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| 165 | ]; |
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| 166 | |||
| 167 | } else { |
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| 168 | $array[$code] = [ |
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| 169 | 'label' => $label, |
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| 170 | 'background_css' => $textcolour, |
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| 171 | 'colour_css' => $code, |
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| 172 | 'sample_text' => 'Aa', |
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| 173 | ]; |
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| 174 | } |
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| 175 | } |
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| 176 | |||
| 177 | return $array; |
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| 178 | } |
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| 179 | return null; |
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| 180 | } |
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| 181 | |||
| 182 | |||
| 183 | /** |
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| 184 | * Detects if the given colour is light |
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| 185 | * @param string $colour HEX colour code |
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| 186 | */ |
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| 187 | public static function get_font_colour(?string $colour = null, ?string $name = '') |
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| 188 | { |
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| 189 | if(! $colour) { |
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| 190 | $colour = '#ffffff'; |
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| 191 | } |
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| 192 | $colour = static::is_light_colour((string) $colour) ? '#000000' : '#ffffff'; |
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| 193 | return static::get_colour_as_db_field($colour, $name); |
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| 194 | } |
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| 195 | |||
| 196 | /** |
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| 197 | * @param string $colour HEX colour code |
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| 198 | */ |
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| 199 | public static function is_dark_colour(?string $colour = ''): bool |
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| 200 | { |
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| 201 | return static::is_light_colour((string) $colour) ? false : true; |
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| 202 | } |
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| 203 | |||
| 204 | /** |
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| 205 | * Detects if the given colour is light |
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| 206 | * @param string $colour HEX colour code |
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| 207 | */ |
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| 208 | public static function is_light_colour(?string $colour = ''): bool |
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| 209 | { |
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| 210 | return static::get_colour_as_db_field($colour) |
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| 211 | ->Luminance() > 0.5; |
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| 212 | } |
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| 213 | |||
| 214 | |||
| 215 | public static function check_colour(?string $colour, ?bool $isBackgroundColour = false): string |
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| 216 | { |
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| 217 | $colour = strtolower($colour); |
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| 218 | if($colour === 'transparent') { |
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| 219 | return 'transparent'; |
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| 220 | } |
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| 221 | if(! strpos($colour, '#')) { |
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| 222 | $colour = '#' . $colour; |
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| 223 | } |
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| 224 | if(! $colour) { |
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| 225 | if($isBackgroundColour) { |
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| 226 | $colour = '#ffffff'; |
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| 227 | } else { |
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| 228 | $colour = '#000000'; |
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| 229 | } |
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| 230 | } |
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| 231 | return $colour; |
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| 232 | } |
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| 233 | |||
| 234 | public function scaffoldFormField($title = null, $params = null) |
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| 235 | { |
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| 236 | $array = static::get_colours_for_dropdown(); |
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| 237 | if(empty($array)) { |
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| 238 | return ColorField::create($this->name, $title); |
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| 239 | } else { |
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| 240 | return ColorPaletteField::create($this->name, $title, static::get_colours_for_dropdown()); |
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| 241 | } |
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| 242 | } |
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| 243 | |||
| 244 | |||
| 245 | public function getReadableColour(): static |
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| 246 | { |
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| 247 | // Remove '#' if it's present |
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| 248 | return static::get_font_colour((string) $this->value, $this->name); |
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| 249 | } |
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| 250 | |||
| 251 | public function Inverted(): static |
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| 252 | { |
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| 253 | // Ensure the colour is 6 characters long |
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| 254 | $colour = str_pad(ltrim($this->value, "#"), 6, '0', STR_PAD_RIGHT); |
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| 255 | |||
| 256 | // Convert the colour to decimal |
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| 257 | $colour = hexdec($colour); |
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| 258 | |||
| 259 | // Invert the colour |
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| 260 | $colour = 0xFFFFFF - $colour; |
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| 261 | |||
| 262 | // Convert the colour back to hex |
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| 263 | $colour = dechex($colour); |
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| 264 | |||
| 265 | // Ensure the colour is 6 characters long |
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| 266 | $colour = str_pad($colour, 6, '0', STR_PAD_LEFT); |
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| 267 | |||
| 268 | return static::get_colour_as_db_field($colour, $this->name); |
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| 269 | } |
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| 270 | |||
| 271 | public function getRelatedColourByName(string $relatedName): static |
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| 272 | { |
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| 273 | $relatedColours = $this->getRelatedColours($this->value); |
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| 274 | $colour = $relatedColours[$relatedName] ?? 'error'; |
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| 275 | return static::get_colour_as_db_field($colour, $this->name); |
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| 276 | } |
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| 277 | |||
| 278 | |||
| 279 | public function getCssVariableDefinition(?string $rootElement = ':root'): string |
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| 280 | { |
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| 281 | $style = PHP_EOL . '<style>'; |
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| 282 | $style .= PHP_EOL.$rootElement; |
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| 283 | $style .= PHP_EOL. '{'; |
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| 284 | $style .= $this->getCssVarLine(); |
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| 285 | if(static::IS_BG_COLOUR) { |
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| 286 | $readableColourObj = $this->getReadableColour(); |
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| 287 | $style .= $readableColourObj->getCssVarLine('-font'); |
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| 288 | } |
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| 289 | foreach($this->getRelatedColours() as $name => $relatedColour) { |
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| 290 | $relatedColourObj = self::get_colour_as_db_field($relatedColour, $this->name); |
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| 291 | $style .= $relatedColourObj->getCssVarLine($name); |
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| 292 | $relatedColourObjReadable = $relatedColourObj->getReadableColour(); |
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| 293 | $style .= $relatedColourObjReadable->getCssVarLine($name.'-font'); |
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| 294 | } |
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| 295 | $style .= PHP_EOL . '}'; |
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| 296 | $style .= PHP_EOL . '</style>'; |
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| 297 | |||
| 298 | return $style; |
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| 299 | } |
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| 300 | |||
| 301 | public function getCssVarLine(?string $name = '', ?string $prefix = '--colour-'): string |
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| 302 | { |
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| 303 | $variableName = ' '.$prefix; |
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| 304 | $variableName .= $name ?: $this->kebabCase($this->getName()); |
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| 305 | return PHP_EOL. $variableName . ': ' . $this->getValue() . ';'; |
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| 306 | } |
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| 307 | |||
| 308 | public function getCssClass(?bool $isTransparent = false): string |
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| 309 | { |
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| 310 | $colours = $this->getColours(); |
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| 311 | if($isTransparent) { |
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| 312 | $name = 'transparent'; |
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| 313 | } else { |
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| 314 | $name = $colours[$this->value] ?? 'colour-error'; |
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| 315 | } |
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| 316 | |||
| 317 | return $this->classCleanup($name); |
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| 318 | } |
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| 319 | |||
| 320 | |||
| 321 | public function getCssClassAlternative(?bool $isTransparent = false): string |
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| 322 | { |
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| 323 | if($isTransparent) { |
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| 324 | $name = 'ffffff00'; |
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| 325 | } else { |
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| 326 | $name = $this->value ?: 'no-colour'; |
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| 327 | } |
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| 328 | return $this->classCleanup($name); |
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| 329 | } |
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| 330 | |||
| 331 | public function getIsLightColour(): bool |
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| 332 | { |
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| 333 | return static::is_light_colour($this->value); |
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| 334 | } |
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| 335 | |||
| 336 | public function getNice() |
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| 337 | { |
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| 338 | $html = ' |
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| 339 | <div |
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| 340 | style=" |
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| 341 | width: 40px; |
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| 342 | height: 40px; |
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| 343 | border-radius: 40px; |
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| 344 | background-color: ' . $this->getBackgroundColour() . '!important; |
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| 345 | color: '.$this->getFontColour().'!important; |
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| 346 | border: 1px solid '.$this->getFontColour().'!important; |
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| 347 | text-align: center; |
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| 348 | display: table-cell; |
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| 349 | display: flex; |
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| 350 | flex-direction: column; |
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| 351 | justify-content: center; |
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| 352 | " |
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| 353 | >Aa</div> '; |
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| 354 | return DBField::create_field('HTMLText', $html); |
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| 355 | } |
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| 356 | |||
| 357 | public function getIsDarkColour(): bool |
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| 360 | } |
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| 361 | |||
| 362 | private function classCleanup(string $name): string |
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| 363 | { |
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| 364 | $name = str_replace('#', '', $name); |
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| 365 | $name = preg_replace('#[^A-Za-z0-9]#', '-', $name); |
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| 366 | |||
| 367 | return static::CSS_CLASS_PREFIX . '-' . trim(trim(strtolower($name), '-')); |
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| 368 | } |
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| 369 | |||
| 370 | |||
| 371 | |||
| 372 | |||
| 373 | protected function getColours(): array |
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| 374 | { |
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| 375 | return $this->Config()->get('colours'); |
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| 376 | } |
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| 377 | |||
| 378 | protected function getMyColours(): array |
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| 379 | { |
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| 380 | $colours = $this->getColours(); |
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| 381 | |||
| 382 | return empty($colours) ? static::DEFAULT_COLOURS : $colours; |
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| 383 | } |
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| 384 | |||
| 385 | protected function getRelatedColours(): array |
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| 389 | } |
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| 390 | |||
| 391 | |||
| 392 | protected static $object_cache = []; |
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| 393 | |||
| 394 | protected static function get_colour_as_db_field(string $colour, ?string $name = '') |
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| 395 | { |
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| 396 | $cacheKey = $colour . '_'. $name . '_'. static::class; |
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| 397 | if(!$colour || ! isset(static::$object_cache[$cacheKey])) { |
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| 398 | static::$object_cache[$cacheKey] = DBField::create_field(static::class, $colour, $name); |
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| 399 | } |
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| 400 | return static::$object_cache[$cacheKey]; |
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| 401 | } |
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| 402 | |||
| 403 | public function getFontColour(): string |
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| 404 | { |
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| 405 | if(self::IS_BG_COLOUR) { |
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| 406 | return (string) self::get_font_colour($this->value); |
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| 407 | } else { |
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| 408 | return (string) $this->value; |
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| 409 | } |
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| 410 | } |
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| 411 | |||
| 412 | public function getBackgroundColour(): string |
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| 413 | { |
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| 414 | if(self::IS_BG_COLOUR) { |
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| 415 | return (string) $this->value; |
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| 416 | } else { |
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| 417 | return (string) self::get_font_colour($this->value); |
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| 418 | } |
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| 419 | } |
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| 420 | |||
| 421 | |||
| 422 | protected function kebabCase(string $string) |
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| 425 | } |
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| 426 | |||
| 427 | } |
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| 428 |