TextManager.js

import MSDFText from '../../content/MSDFText.js';

/**

Job:
- Routing the request for Text dimensions and Text creation depending on Text type.

Knows:
- this component's textType attribute

Note:
Only one Text type is natively supported by the library at the moment,
but the architecture allows you to easily stick in your custom Text type.
More information here :
https://github.com/felixmariotto/three-mesh-ui/wiki/Using-a-custom-text-type

 */
export default function TextManager( Base ) {

	return class TextManager extends Base {

		createText() {

			const component = this;

			const mesh = ( () => {

				switch ( this.getTextType() ) {

					case 'MSDF' :
						return MSDFText.buildText.call( this );

					default :
						console.warn( `'${this.getTextType()}' is not a supported text type.\nSee https://github.com/felixmariotto/three-mesh-ui/wiki/Using-a-custom-text-type` );
						break;

				}

			} )();

			mesh.renderOrder = Infinity;

			// This is for hiddenOverflow to work
			mesh.onBeforeRender = function () {

				if ( component.updateClippingPlanes ) {

					component.updateClippingPlanes();

				}

			};

			return mesh;

		}

		/**
		 * Called by Text to get the dimensions of a particular glyph,
		 * in order for InlineManager to compute its position
		 */
		getGlyphDimensions( options ) {

			switch ( options.textType ) {

				case 'MSDF' :

					return MSDFText.getGlyphDimensions( options );

				default :
					console.warn( `'${options.textType}' is not a supported text type.\nSee https://github.com/felixmariotto/three-mesh-ui/wiki/Using-a-custom-text-type` );
					break;

			}

		}


		/**
		 * Called by Text to get the amount of kerning for pair of glyph
		 * @param textType
		 * @param font
		 * @param glyphPair
		 * @returns {number}
		 */
		getGlyphPairKerning( textType, font, glyphPair ) {

			switch ( textType ) {

				case 'MSDF' :

					return MSDFText.getGlyphPairKerning( font, glyphPair );

				default :
					console.warn( `'${textType}' is not a supported text type.\nSee https://github.com/felixmariotto/three-mesh-ui/wiki/Using-a-custom-text-type` );
					break;

			}

		}
	};

}