import view = require("ui/core/view");

export type PropertySetter = (instance: view.View, propertyValue: string) => void;

var specialProperties: Map<string, PropertySetter> = new Map<string, PropertySetter>();

function specialPropertyKey(name: string) {

return name.toLowerCase();

}

export function registerSpecialProperty(name: string, setter: PropertySetter): void {

let propertyKey = specialPropertyKey(name);

if (specialProperties.has(propertyKey)) {

throw new Error(`Property for ${propertyKey} already registered`);

} else {

specialProperties.set(propertyKey, setter);

}

}

export function getSpecialPropertySetter(name: string): PropertySetter {

let propertyKey = specialPropertyKey(name);

return specialProperties.get(propertyKey);

}