copyjs/copy.mjs at main · codingjlu/copyjs · GitHub

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'use strict';
const copyjs = function(str, options = {
    reSelect: true,
    html: false,
    copyFromSelector: false
}) {
    class Reselect {
        init() {
            this.selectionOptions = {
                start: {
                    index: window.getSelection().anchorOffset,
                    node: window.getSelection().anchorNode
                },
                end: {
                    index: window.getSelection().focusOffset,
                    node: window.getSelection().focusNode
                }
            };
            return true;
        }
        reselect() {
            if (!this.selectionOptions.start.node)
                return false;
            const newSelection = window.getSelection();
            newSelection.removeAllRanges();
            const range = document.createRange();
            range.setStart(this.selectionOptions.start.node, this.selectionOptions.start.index);
            range.setEnd(this.selectionOptions.end.node, this.selectionOptions.end.index);
            newSelection.addRange(range);
            return true;
        }
    }
    const reselect = new Reselect();
    reselect.init();
    if (options.copyFromSelector) {
        if (!options.html) {
            const copyjs_textarea = document.createElement("textarea");
            document.body.append(copyjs_textarea);
            const target = document.querySelector(str);
            copyjs_textarea.value = target.tagName === "TEXTAREA" || target.tagName === "INPUT" ?
                target.value :
                target.innerText;
            copyjs_textarea.select();
            document.execCommand("copy");
            copyjs_textarea.remove();
        } else {
            const selectorSel = window.getSelection();
            selectorSel.removeAllRanges();
            const selectorRange = document.createRange();
            const tag = document.querySelector(str).tagName;
            if (tag === "INPUT" || tag === "TEXTAREA") {
                const copyjs_div = document.createElement("div");
                document.body.append(copyjs_div);
                copyjs_div.innerHTML = document.querySelector(str).value;
                const htmlSel = window.getSelection();
                htmlSel.removeAllRanges();
                const htmlRange = document.createRange();
                htmlRange.selectNodeContents(copyjs_div);
                htmlSel.addRange(htmlRange);
                document.execCommand("copy");
                copyjs_div.remove();
            } else {
                selectorRange.selectNodeContents(document.querySelector(str));
                selectorSel.addRange(selectorRange);
                document.execCommand("copy");
            }
        }
    } else if (options.html) {
        const copyjs_div = document.createElement("div");
        document.body.append(copyjs_div);
        copyjs_div.innerHTML = str;
        const htmlSel = window.getSelection();
        htmlSel.removeAllRanges();
        const htmlRange = document.createRange();
        htmlRange.selectNodeContents(copyjs_div);
        htmlSel.addRange(htmlRange);
        document.execCommand("copy");
        copyjs_div.remove();
    } else {
        const copyjs_textarea = document.createElement("textarea");
        document.body.append(copyjs_textarea);
        copyjs_textarea.value = str;
        copyjs_textarea.select();
        document.execCommand("copy");
        copyjs_textarea.remove();
    }
    if (options.reSelect) {
        reselect.reselect();
    }
    return true;
}
export default copyjs;