79 lines
2.2 KiB
HTML
79 lines
2.2 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<style>
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.quote {
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padding-top: 5px;
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padding-right: 5px;
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padding-bottom: 5px;
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padding-left: 12px;
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border-left: 5px lightblue solid;
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color: gray;
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background-color: #EFFEFE;
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}
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#editor {
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width: 480px;
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height: 320px;
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border: 1px solid #DFDFDF;
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border-radius: 4px;
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padding: 10px;
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outline: none;
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overflow: scroll;
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font-family: -apple-system;
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}
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#editor > p:first-child {
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margin-top: 0;
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}
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#editor > p:last-child {
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margin-bottom: 0;
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}
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#editor > p,
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.quote > p {
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margin: 8px auto;
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}
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</style>
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<script>
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function setup() {
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editor.addEventListener("beforeinput", event => {
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if (event.inputType.match(/^format/))
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return;
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for (let staticRange of event.getTargetRanges()) {
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if (nodeIsInsideQuote(staticRange.startContainer)
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|| nodeIsInsideQuote(staticRange.endContainer)) {
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event.preventDefault();
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return;
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}
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}
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});
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function nodeIsInsideQuote(node) {
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let currentElement = node.nodeType == Node.ELEMENT_NODE ? node : node.parentElement;
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while (currentElement) {
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if (currentElement.classList.contains("quote"))
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return true;
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currentElement = currentElement.parentElement;
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}
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return false;
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}
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}
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</script>
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</head>
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<body onload="setup()">
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<div id="editor" contenteditable>
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<p>This is some regular content.</p>
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<p>This text is fully editable.</p>
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<div class="quote">
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<p>This is some quoted content.</p>
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<p>You can only change the format of this text.</p>
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</div>
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<p>This is some more regular content.</p>
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<p>This text is also fully editable.</p>
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</div>
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</body>
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</html>
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