gistfile1.hx

package prezi.engine.doc;

import flash.geom.Matrix;

import hxjson2.JSON;

class Example
{
	public static function main()
	{
		var object = document.getObject("obj-12");
		var transform:Matrix = object.getProperty(ObjectProperties.transform);

		// Type checking:
		// Here setProperty can validate the type and find out that "lajos" is not a Matrix
		object.setProperty(ObjectProperties.transform, "lajos");
	}

	public static function deserialize(propertyName:String, propertyValue:JSON):Dynamic
	{
		var valueType:Class = ObjectProperties.getDefinition(name).type;
		return deserializers.get(valueType).deserialize(propertyValue);
	}
}

// Type checking example
class ExampleModelObject
{
	public function setProperty(property:PropertyDefinition, value:Dynamic)
	{
		if (!Std.is(value, property.type))
		{
			throw "Invalid property type";
		}
		// ...
	}
}

class ObjectProperties
{
	public static var transform = createDefinition("transform", Matrix, Single);
	public static var children = createDefinition("children", ObjectReference, OrderedMulti);
	public static var wrapWidth = createDefinition("wrapWidth", Float, OrderedMulti);
	public static var text = createDefinition("text", Text, Single);

	static var types:Hash<PropertyDefinition>;

	static function createDefinition(name:String, resolution:Resolution, cardinality:Cardinality):PropertyDefinition
	{
		var type = new PropertyDefinition(name, resolution, cardinality);
		types.set(name, type);
		return type;
	}

	public static function getDefinition(name:String):PropertyDefinition
	{
		var definition = types.get(name);
		if (definition == null)
		{
			// TODO: Is this going to cause problems?
			// Like: user A knows this property, so they handle it as Text/OrderedList
			// But user B doesn't, so they handle it as..?
			definition = createDefinition(name, Unkonwn, Unkonwn);
		}
		return definition;
	}
}

class PropertyDefinition
{
	public var name(default, null):String;
	public var type(default, null):Class;
	public var cardinality(default, null):Cardinality;

	public function new(name:String, type:Class, cardinality:Cardinality)
	{
		this.name = name;
		this.type = type;
		this.cardinality = cardinality;
	}
}

enum Resolution
{
	Value;
	ObjectReference;
	Text;
}

enum Cardinality
{
	Single;
	OrderedList;
	SortedList;
}