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import _classCallCheck from "@babel/runtime/helpers/classCallCheck";
import _createClass from "@babel/runtime/helpers/createClass";
/**
* Window Sections are used to group nearby cells.
* This enables us to more quickly determine which cells to display in a given region of the Window.
*
*/
import Section from './Section';
var SECTION_SIZE = 100;
/**
* Contains 0 to many Sections.
* Grows (and adds Sections) dynamically as cells are registered.
* Automatically adds cells to the appropriate Section(s).
*/
var SectionManager =
/*#__PURE__*/
function () {
function SectionManager() {
var sectionSize = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : SECTION_SIZE;
_classCallCheck(this, SectionManager);
this._sectionSize = sectionSize;
this._cellMetadata = [];
this._sections = {};
}
/**
* Gets all cell indices contained in the specified region.
* A region may encompass 1 or more Sections.
*/
_createClass(SectionManager, [{
key: "getCellIndices",
value: function getCellIndices(_ref) {
var height = _ref.height,
width = _ref.width,
x = _ref.x,
y = _ref.y;
var indices = {};
this.getSections({
height: height,
width: width,
x: x,
y: y
}).forEach(function (section) {
return section.getCellIndices().forEach(function (index) {
indices[index] = index;
});
}); // Object keys are strings; this function returns numbers
return Object.keys(indices).map(function (index) {
return indices[index];
});
}
/** Get size and position information for the cell specified. */
}, {
key: "getCellMetadata",
value: function getCellMetadata(_ref2) {
var index = _ref2.index;
return this._cellMetadata[index];
}
/** Get all Sections overlapping the specified region. */
}, {
key: "getSections",
value: function getSections(_ref3) {
var height = _ref3.height,
width = _ref3.width,
x = _ref3.x,
y = _ref3.y;
var sectionXStart = Math.floor(x / this._sectionSize);
var sectionXStop = Math.floor((x + width - 1) / this._sectionSize);
var sectionYStart = Math.floor(y / this._sectionSize);
var sectionYStop = Math.floor((y + height - 1) / this._sectionSize);
var sections = [];
for (var sectionX = sectionXStart; sectionX <= sectionXStop; sectionX++) {
for (var sectionY = sectionYStart; sectionY <= sectionYStop; sectionY++) {
var key = "".concat(sectionX, ".").concat(sectionY);
if (!this._sections[key]) {
this._sections[key] = new Section({
height: this._sectionSize,
width: this._sectionSize,
x: sectionX * this._sectionSize,
y: sectionY * this._sectionSize
});
}
sections.push(this._sections[key]);
}
}
return sections;
}
/** Total number of Sections based on the currently registered cells. */
}, {
key: "getTotalSectionCount",
value: function getTotalSectionCount() {
return Object.keys(this._sections).length;
}
/** Intended for debugger/test purposes only */
}, {
key: "toString",
value: function toString() {
var _this = this;
return Object.keys(this._sections).map(function (index) {
return _this._sections[index].toString();
});
}
/** Adds a cell to the appropriate Sections and registers it metadata for later retrievable. */
}, {
key: "registerCell",
value: function registerCell(_ref4) {
var cellMetadatum = _ref4.cellMetadatum,
index = _ref4.index;
this._cellMetadata[index] = cellMetadatum;
this.getSections(cellMetadatum).forEach(function (section) {
return section.addCellIndex({
index: index
});
});
}
}]);
return SectionManager;
}();
export { SectionManager as default };
import { bpfrpt_proptype_Index } from "./types";
import { bpfrpt_proptype_SizeAndPositionInfo } from "./types";