pagedjs
Version:
Chunks up a document into paged media flows and applies print styles
85 lines (84 loc) • 4.27 kB
JavaScript
;
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports["default"] = void 0;
var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));
var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));
var _inherits2 = _interopRequireDefault(require("@babel/runtime/helpers/inherits"));
var _possibleConstructorReturn2 = _interopRequireDefault(require("@babel/runtime/helpers/possibleConstructorReturn"));
var _getPrototypeOf2 = _interopRequireDefault(require("@babel/runtime/helpers/getPrototypeOf"));
var _handler = _interopRequireDefault(require("../handler.cjs"));
var _cssTree = _interopRequireDefault(require("css-tree"));
function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = (0, _getPrototypeOf2["default"])(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = (0, _getPrototypeOf2["default"])(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return (0, _possibleConstructorReturn2["default"])(this, result); }; }
function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
var PageCounterIncrement = /*#__PURE__*/function (_Handler) {
(0, _inherits2["default"])(PageCounterIncrement, _Handler);
var _super = _createSuper(PageCounterIncrement);
function PageCounterIncrement(chunker, polisher, caller) {
var _this;
(0, _classCallCheck2["default"])(this, PageCounterIncrement);
_this = _super.call(this, chunker, polisher, caller);
_this.styleSheet = polisher.styleSheet;
_this.pageCounter = {
name: "page",
increments: {},
resets: {}
};
return _this;
}
(0, _createClass2["default"])(PageCounterIncrement, [{
key: "onDeclaration",
value: function onDeclaration(declaration, dItem, dList, rule) {
var property = declaration.property;
if (property === "counter-increment") {
var inc = this.handleIncrement(declaration, rule);
if (inc) {
dList.remove(dItem);
}
}
}
}, {
key: "afterParsed",
value: function afterParsed(_) {
for (var inc in this.pageCounter.increments) {
var increment = this.pageCounter.increments[inc];
this.insertRule("".concat(increment.selector, " { --pagedjs-page-counter-increment: ").concat(increment.number, " }"));
}
}
}, {
key: "handleIncrement",
value: function handleIncrement(declaration, rule) {
var identifier = declaration.value.children.first();
var number = declaration.value.children.getSize() > 1 ? declaration.value.children.last().value : 1;
var name = identifier && identifier.name;
if (name && name.indexOf("target-counter-") === 0) {
return;
}
// A counter named page is automatically created and incremented by 1 on every page of the document,
// unless the counter-increment property in the page context explicitly specifies a different increment for the page counter.
// https://www.w3.org/TR/css-page-3/#page-based-counters
if (name !== "page") {
return;
}
// the counter-increment property is not defined on the page context (i.e. @page rule), ignoring...
if (rule.ruleNode.name === "page" && rule.ruleNode.type === "Atrule") {
return;
}
var selector = _cssTree["default"].generate(rule.ruleNode.prelude);
return this.pageCounter.increments[selector] = {
selector: selector,
number: number
};
}
}, {
key: "insertRule",
value: function insertRule(rule) {
this.styleSheet.insertRule(rule, this.styleSheet.cssRules.length);
}
}]);
return PageCounterIncrement;
}(_handler["default"]);
var _default = PageCounterIncrement;
exports["default"] = _default;