Add unit enum types

Author: KugiHaito

CSSObject/enums/IUnit.js

@@ -0,0 +1,98 @@
+/**
+ * @enum IUnit
+ * CSS Units of value
+ */
+const IUnit = {
+
+    /**
+     * Others type of value
+     */
+    NO_UNIT: 'NO_UNIT',
+
+    // Absolute Lengths
+    
+    /** Centimeters Unit */
+    CENTIMETERS: 'cm',
+    
+    /** Millimetters Unit */
+    MILLIMETERS: 'mm',
+    
+    /** Inches Unit (1in = 96px = 2.54cm) */
+    INCHES: 'in', // 
+    
+    /** Pixels Unit (1px = 1/96th of 1in) */
+    PIXELS: 'px',
+    
+    /** Points Unit (1pt = 1/72 of 1in) */
+    
+    /** Picas Unit (1pc = 12 pt) */
+    PICAS: 'pc',
+
+    // Relative Lengths
+
+    /**
+     * Em Unit
+     * Relative to the font-size of the element
+     * (2em means 2 times the size of the current font)
+     */
+    EM: 'em',
+    
+    /**
+     * Rem Unit
+     * Relative to font-size of the root element
+     */
+    REM: 'rem',
+    
+    /**
+     * Ex Unit 
+     * relative to the x-height of the current font (rarely used)
+     */
+    EX: 'ex',
+    
+    /**
+     * Ch Unit
+     * Relative to the width of the "0" (zero)
+     */
+    CH: 'ch',
+    
+    /** Viewport Width Unit */
+    VIEWPORT_WIDTH: 'vw',
+    
+    /** 
+     * Viewport Height Unit
+     * (2 times the size of the current font)
+     */
+    VIEWPORT_HEIGHT: 'vh',
+    
+    /**
+     * Viewport smaller dimension Unit
+     * Relative to 1% of viewport's smaller dimension
+     */
+    VMIN: 'vmin',
+    
+    /**
+     * Viewport larger dimension Unit
+     * Relative to 1% of viewport's* larger dimension
+     */
+    VMAX: 'vmax',
+    
+    /**
+     * Percentage Unit
+     * Relative to the parent element
+     */
+    PERCENTAGE: '%',
+
+    /**
+     * Milliseconds Unit Time
+    */
+    MILLISECONDS: 'ms',
+
+    /**
+     * Seconds Unit Time
+    */
+    SECONDS: 's',
+
+}
+
+
+export default IUnit