36 lines
1.2 KiB
JavaScript
36 lines
1.2 KiB
JavaScript
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/**
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* A helper class to manage requesting clipboard permissions and provide common functionality for working with the
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* clipboard.
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*/
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class ClipboardHelper {
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constructor() {
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if ( game.clipboard instanceof this.constructor ) {
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throw new Error("You may not re-initialize the singleton ClipboardHelper. Use game.clipboard instead.");
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}
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}
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/* -------------------------------------------- */
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/**
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* Copies plain text to the clipboard in a cross-browser compatible way.
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* @param {string} text The text to copy.
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* @returns {Promise<void>}
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*/
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async copyPlainText(text) {
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// The clipboard-write permission name is not supported in Firefox.
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try {
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const result = await navigator.permissions.query({name: "clipboard-write"});
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if ( ["granted", "prompt"].includes(result.state) ) {
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return navigator.clipboard.writeText(text);
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}
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} catch(err) {}
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// Fallback to deprecated execCommand here if writeText is not supported in this browser or security context.
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document.addEventListener("copy", event => {
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event.clipboardData.setData("text/plain", text);
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event.preventDefault();
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}, {once: true});
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document.execCommand("copy");
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}
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}
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