62 lines
1.8 KiB
JavaScript
62 lines
1.8 KiB
JavaScript
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// Copyright 2015, 2016 Ethcore (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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export const onPrint = (window, cb) => {
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let called = false; let query, queryFn;
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const onPrint = () => {
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if (queryFn) {
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query.removeListener(queryFn);
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}
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window.removeEventListener('afterprint', onPrint, false);
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if (!called) {
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called = true;
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cb();
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}
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};
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if (window.matchMedia) {
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queryFn = (query) => {
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if (!query.matches) {
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onPrint();
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}
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};
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query = window.matchMedia('print');
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query.addListener(queryFn);
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}
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window.addEventListener('afterprint', onPrint, false);
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};
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export default (html) => {
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const iframe = document.createElement('iframe');
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iframe.setAttribute('sandbox', 'allow-modals allow-same-origin allow-scripts');
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iframe.setAttribute('src', '/');
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iframe.setAttribute('style', 'display: none');
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document.body.appendChild(iframe);
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const teardown = () => {
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// Safari crashes without a timeout.
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setTimeout(() => document.body.removeChild(iframe), 0);
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};
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setTimeout(() => {
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iframe.contentDocument.write(html);
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onPrint(iframe.contentWindow, teardown);
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iframe.contentWindow.focus();
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iframe.contentWindow.print();
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}, 0);
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};
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