quixote/src/descriptors/element_render.js

CSS unit and integration testing

// Copyright (c) 2016-2017 Titanium I.T. LLC. All rights reserved. For license, see "README" or "LICENSE" file.
"use strict";

var ensure = require("../util/ensure.js");
var RenderState = require("../values/render_state.js");
var Position = require("../values/position.js");
var Descriptor = require("./descriptor.js");
var ElementRenderEdge = require("./element_render_edge.js");
var Span = require("./span.js");
var Center = require("./center.js");

var Me = module.exports = function ElementRender(element) {
	var QElement = require("../q_element.js");      // break circular dependency
	ensure.signature(arguments, [ QElement ]);

	this.should = this.createShould();
	this._element = element;

	// properties
	this.top = ElementRenderEdge.top(element);
	this.right = ElementRenderEdge.right(element);
	this.bottom = ElementRenderEdge.bottom(element);
	this.left = ElementRenderEdge.left(element);

	this.width = Span.create(this.left, this.right, "rendered width of " + element);
	this.height = Span.create(this.top, this.bottom, "rendered height of " + element);

	this.center = Center.x(this.left, this.right, "rendered center of " + element);
	this.middle = Center.y(this.top, this.bottom, "rendered middle of " + element);
};
Descriptor.extend(Me);

Me.create = function create(element) {
	return new Me(element);
};

Me.prototype.value = function value() {
	if (this.top.value().equals(Position.noY())) return RenderState.notRendered();
	else return RenderState.rendered();
};

Me.prototype.toString = function toString() {
	return this._element.toString() + " rendering";
};

Me.prototype.convert = function convert(arg, type) {
	if (type === "boolean") {
		return arg ? RenderState.rendered() : RenderState.notRendered();
	}
};