Enhance newsletter HTML generation and UI components
- Introduce helper functions `_outlook_font` and `_outlook_link` for better formatting in Outlook-compatible HTML. - Update `create_outlook_html` to utilize new font and link functions, improving the overall appearance of the newsletter. - Modify CSS to add styles for a new copy dialog overlay and related components. - Refactor JavaScript to improve copy functionality and add a dialog for copying HTML content. - Update dashboard template to enhance user instructions for copying and downloading HTML content.
This commit is contained in:
smueller
@@ -8,8 +8,7 @@ function setCopyStatus(message, isError) {
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function getNewsletterHtml() {
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const htmlSource = document.getElementById("newsletter-html-source");
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const htmlDisplay = document.getElementById("newsletter-html-display");
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const value = htmlSource?.value.trim() || htmlDisplay?.value.trim() || "";
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return value;
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return htmlSource?.value.trim() || htmlDisplay?.value.trim() || "";
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}
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function getNewsletterOutlookHtml() {
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@@ -24,6 +23,10 @@ function getNewsletterPlain() {
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return plainSource ? plainSource.value : "";
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}
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function byteLength(text) {
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return new TextEncoder().encode(text).length;
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}
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function wrapCfHtml(html) {
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const fragmentStart = "<!--StartFragment-->";
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const fragmentEnd = "<!--EndFragment-->";
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@@ -32,15 +35,20 @@ function wrapCfHtml(html) {
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const documentHtml = `<html><body>${fragmentStart}${inner}${fragmentEnd}</body></html>`;
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const pad = (value) => String(value).padStart(10, "0");
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const headerPlaceholder = "StartHTML:0000000000\r\nEndHTML:0000000000\r\nStartFragment:0000000000\r\nEndFragment:0000000000\r\n";
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const prefix = `Version:0.9\r\n${headerPlaceholder}`;
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const startHtml = prefix.length;
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const endHtml = startHtml + documentHtml.length;
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const startFragment = startHtml + documentHtml.indexOf(fragmentStart) + fragmentStart.length;
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const endFragment = startHtml + documentHtml.indexOf(fragmentEnd);
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const headerTemplate =
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"Version:0.9\r\n" +
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"StartHTML:0000000000\r\n" +
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"EndHTML:0000000000\r\n" +
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"StartFragment:0000000000\r\n" +
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"EndFragment:0000000000\r\n";
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const startHtml = byteLength(headerTemplate);
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const endHtml = startHtml + byteLength(documentHtml);
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const startFragment = startHtml + byteLength(documentHtml.slice(0, documentHtml.indexOf(fragmentStart) + fragmentStart.length));
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const endFragment = startHtml + byteLength(documentHtml.slice(0, documentHtml.indexOf(fragmentEnd)));
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return (
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`Version:0.9\r\n` +
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"Version:0.9\r\n" +
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`StartHTML:${pad(startHtml)}\r\n` +
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`EndHTML:${pad(endHtml)}\r\n` +
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`StartFragment:${pad(startFragment)}\r\n` +
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@@ -49,26 +57,33 @@ function wrapCfHtml(html) {
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);
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}
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function copyFromTextarea(textarea) {
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function selectTextarea(textarea) {
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if (!textarea || !textarea.value) return false;
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const previousActive = document.activeElement;
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textarea.removeAttribute("readonly");
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textarea.scrollIntoView({ behavior: "smooth", block: "center" });
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textarea.focus({ preventScroll: true });
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textarea.select();
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textarea.setSelectionRange(0, textarea.value.length);
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return true;
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}
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function copyFromTextarea(textarea) {
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if (!textarea || !textarea.value) return false;
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const wasReadonly = textarea.hasAttribute("readonly");
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if (wasReadonly) textarea.removeAttribute("readonly");
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selectTextarea(textarea);
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let ok = false;
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try {
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ok = document.execCommand("copy");
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} catch (err) {
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console.warn("execCommand copy from textarea failed.", err);
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ok = false;
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} finally {
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textarea.setAttribute("readonly", "");
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if (previousActive && typeof previousActive.focus === "function") {
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previousActive.focus({ preventScroll: true });
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}
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}
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if (wasReadonly) textarea.setAttribute("readonly", "");
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if (!ok) {
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selectTextarea(textarea);
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}
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return ok;
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}
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@@ -92,47 +107,118 @@ function copyTextWithFallback(text) {
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const textarea = document.createElement("textarea");
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textarea.value = text;
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textarea.setAttribute("aria-hidden", "true");
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textarea.style.position = "fixed";
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textarea.style.top = "0";
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textarea.style.left = "0";
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textarea.style.width = "2px";
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textarea.style.height = "2px";
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textarea.style.padding = "0";
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textarea.style.border = "none";
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textarea.style.outline = "none";
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textarea.style.boxShadow = "none";
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textarea.style.background = "transparent";
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textarea.style.cssText = "position:fixed;top:0;left:0;width:2px;height:2px;opacity:0;border:none;padding:0;";
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document.body.appendChild(textarea);
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let ok = false;
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try {
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textarea.focus({ preventScroll: true });
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textarea.select();
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textarea.setSelectionRange(0, text.length);
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selectTextarea(textarea);
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ok = document.execCommand("copy");
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} catch (err) {
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console.warn("execCommand copy from temporary textarea failed.", err);
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ok = false;
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} finally {
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document.body.removeChild(textarea);
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}
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return ok;
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}
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let copyDialogKeyHandler = null;
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function closeCopyDialog() {
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const overlay = document.getElementById("copy-dialog-overlay");
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if (overlay) overlay.remove();
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if (copyDialogKeyHandler) {
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document.removeEventListener("keydown", copyDialogKeyHandler);
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copyDialogKeyHandler = null;
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}
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}
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function showCopyDialog(text, title) {
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closeCopyDialog();
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const overlay = document.createElement("div");
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overlay.id = "copy-dialog-overlay";
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overlay.className = "copy-dialog-overlay";
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overlay.innerHTML = `
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<div class="copy-dialog" role="dialog" aria-modal="true" aria-labelledby="copy-dialog-title">
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<h4 id="copy-dialog-title">${title}</h4>
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<p class="copy-dialog-hint">Der Text ist markiert. Jetzt <strong>Strg+C</strong> drücken (Mac: <strong>Cmd+C</strong>).</p>
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<textarea class="copy-dialog-textarea" spellcheck="false"></textarea>
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<div class="copy-dialog-actions">
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<button type="button" class="btn-secondary" id="copy-dialog-select-btn">Alles markieren</button>
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<button type="button" class="btn-secondary" id="copy-dialog-close-btn">Schließen</button>
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</div>
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</div>
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`;
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document.body.appendChild(overlay);
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const textarea = overlay.querySelector(".copy-dialog-textarea");
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textarea.value = text;
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selectTextarea(textarea);
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let copied = false;
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try {
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copied = document.execCommand("copy");
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} catch (err) {
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console.warn("execCommand copy in dialog failed.", err);
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}
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if (copied) {
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setCopyStatus("HTML-Quelltext kopiert.");
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} else {
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setCopyStatus("Bitte im Fenster Strg+C drücken.", true);
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}
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overlay.querySelector("#copy-dialog-close-btn").addEventListener("click", closeCopyDialog);
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overlay.querySelector("#copy-dialog-select-btn").addEventListener("click", () => selectTextarea(textarea));
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overlay.addEventListener("click", (event) => {
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if (event.target === overlay) closeCopyDialog();
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});
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copyDialogKeyHandler = (event) => {
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if (event.key === "Escape") closeCopyDialog();
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};
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document.addEventListener("keydown", copyDialogKeyHandler);
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}
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function copyViaIframe(html) {
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const iframe = document.createElement("iframe");
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iframe.setAttribute("aria-hidden", "true");
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iframe.style.cssText = "position:fixed;width:700px;height:500px;left:-9999px;top:0;border:none;";
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document.body.appendChild(iframe);
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const doc = iframe.contentWindow.document;
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doc.open();
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doc.write(html);
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doc.close();
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const range = doc.createRange();
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range.selectNodeContents(doc.body);
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const selection = iframe.contentWindow.getSelection();
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selection.removeAllRanges();
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selection.addRange(range);
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let ok = false;
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try {
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ok = doc.execCommand("copy");
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} catch (err) {
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console.warn("execCommand copy via iframe failed.", err);
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} finally {
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selection.removeAllRanges();
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document.body.removeChild(iframe);
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}
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return ok;
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}
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function copyHtmlWithFallback(html) {
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if (copyViaIframe(html)) return true;
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const container = document.createElement("div");
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container.innerHTML = html;
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container.contentEditable = "true";
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container.setAttribute("aria-hidden", "true");
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container.style.position = "fixed";
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container.style.left = "0";
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container.style.top = "0";
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container.style.width = "600px";
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container.style.height = "1px";
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container.style.overflow = "hidden";
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container.style.opacity = "0";
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container.style.pointerEvents = "none";
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container.style.background = "#FFFFFF";
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container.style.cssText =
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"position:fixed;left:0;top:0;width:700px;max-height:1px;overflow:hidden;opacity:0;pointer-events:none;background:#FFFFFF;";
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document.body.appendChild(container);
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const range = document.createRange();
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@@ -146,36 +232,13 @@ function copyHtmlWithFallback(html) {
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ok = document.execCommand("copy");
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} catch (err) {
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console.warn("execCommand HTML copy failed.", err);
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ok = false;
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} finally {
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selection.removeAllRanges();
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document.body.removeChild(container);
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}
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if (!ok) {
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ok = copyTextWithFallback(wrapCfHtml(html));
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}
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return ok;
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}
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async function copyText(text) {
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if (!text) return false;
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if (copyTextWithFallback(text)) {
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return true;
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}
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if (navigator.clipboard && window.isSecureContext) {
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try {
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await navigator.clipboard.writeText(text);
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return true;
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} catch (err) {
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console.warn("Clipboard API text copy failed.", err);
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}
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}
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return false;
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}
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async function copyForOutlook() {
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const html = getNewsletterOutlookHtml();
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const plain = getNewsletterPlain();
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@@ -185,7 +248,7 @@ async function copyForOutlook() {
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}
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if (copyHtmlWithFallback(html)) {
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setCopyStatus("Newsletter für Outlook kopiert. Mit Strg+V einfügen (ggf. „Format beibehalten“).");
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setCopyStatus("Newsletter kopiert. In Outlook: Strg+V, dann ggf. Rechtsklick → „Format beibehalten“.");
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return;
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}
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@@ -198,55 +261,24 @@ async function copyForOutlook() {
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"text/plain": new Blob([plain], { type: "text/plain" }),
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}),
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]);
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setCopyStatus("Newsletter für Outlook kopiert. Mit Strg+V einfügen (ggf. „Format beibehalten“).");
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setCopyStatus("Newsletter kopiert. In Outlook: Strg+V, dann ggf. Rechtsklick → „Format beibehalten“.");
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return;
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} catch (err) {
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console.warn("Clipboard API HTML copy failed.", err);
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}
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}
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setCopyStatus("Kopieren fehlgeschlagen. Bitte „HTML herunterladen“ verwenden.", true);
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setCopyStatus("Bitte „Im Browser öffnen“ nutzen und dort Strg+A → Strg+C.", true);
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}
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async function copyHtmlSource() {
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function copyHtmlSource() {
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const html = getNewsletterHtml();
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if (!html) {
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setCopyStatus("Bitte zuerst einen Newsletter generieren.", true);
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return;
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}
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const displayArea = document.getElementById("newsletter-html-display");
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const sourceArea = document.getElementById("newsletter-html-source");
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const textarea = displayArea?.value ? displayArea : sourceArea;
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if (textarea && copyFromTextarea(textarea)) {
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setCopyStatus("HTML-Quelltext kopiert.");
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return;
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}
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if (copyTextWithFallback(html)) {
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setCopyStatus("HTML-Quelltext kopiert.");
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return;
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}
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if (navigator.clipboard && window.isSecureContext) {
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try {
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await navigator.clipboard.writeText(html);
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setCopyStatus("HTML-Quelltext kopiert.");
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return;
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} catch (err) {
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console.warn("Clipboard API HTML source copy failed.", err);
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}
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}
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if (textarea) {
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textarea.focus({ preventScroll: true });
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textarea.select();
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}
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setCopyStatus(
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"Automatisches Kopieren nicht möglich. HTML-Feld unten ist markiert – bitte Strg+C drücken.",
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true
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);
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showCopyDialog(html, "HTML-Quelltext kopieren");
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}
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function downloadHtml() {
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@@ -256,9 +288,23 @@ function downloadHtml() {
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return;
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}
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const stamp = new Date().toISOString().slice(0, 10);
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const filename = `wiki-newsletter-${stamp}.html`;
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const blob = new Blob([html], { type: "text/html;charset=utf-8" });
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downloadFile(html, `wiki-newsletter-${new Date().toISOString().slice(0, 10)}.html`, "text/html;charset=utf-8");
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setCopyStatus("Outlook-HTML heruntergeladen.");
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}
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function downloadHtmlSource() {
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const html = getNewsletterHtml();
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if (!html) {
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setCopyStatus("Bitte zuerst einen Newsletter generieren.", true);
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return;
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}
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downloadFile(html, `wiki-newsletter-source-${new Date().toISOString().slice(0, 10)}.html`, "text/html;charset=utf-8");
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setCopyStatus("HTML-Quelltext heruntergeladen.");
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}
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function downloadFile(content, filename, mimeType) {
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const blob = new Blob([content], { type: mimeType });
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const url = URL.createObjectURL(blob);
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const link = document.createElement("a");
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link.href = url;
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@@ -267,7 +313,26 @@ function downloadHtml() {
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link.click();
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document.body.removeChild(link);
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URL.revokeObjectURL(url);
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setCopyStatus(`HTML gespeichert als ${filename}. Datei in Outlook öffnen oder Inhalt kopieren.`);
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}
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function openOutlookInBrowser() {
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const html = getNewsletterOutlookHtml();
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if (!html) {
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setCopyStatus("Bitte zuerst einen Newsletter generieren.", true);
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return;
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}
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const popup = window.open("", "_blank");
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if (!popup) {
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setCopyStatus("Pop-up blockiert. Bitte Pop-ups erlauben oder „HTML herunterladen“ nutzen.", true);
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return;
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}
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popup.document.open();
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popup.document.write(html);
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popup.document.close();
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popup.document.title = "Wiki-Newsletter – zum Kopieren";
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setCopyStatus("Newsletter im Browser geöffnet: Strg+A → Strg+C, dann in Outlook einfügen.");
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}
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document.addEventListener("DOMContentLoaded", () => {
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@@ -279,7 +344,14 @@ document.addEventListener("DOMContentLoaded", () => {
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frame.srcdoc = previewHtml;
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}
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const htmlDisplay = document.getElementById("newsletter-html-display");
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htmlDisplay?.addEventListener("focus", () => selectTextarea(htmlDisplay));
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htmlDisplay?.addEventListener("click", () => selectTextarea(htmlDisplay));
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document.getElementById("copy-outlook-btn")?.addEventListener("click", copyForOutlook);
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document.getElementById("open-outlook-btn")?.addEventListener("click", openOutlookInBrowser);
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document.getElementById("copy-html-source-btn")?.addEventListener("click", copyHtmlSource);
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document.getElementById("copy-html-source-btn-2")?.addEventListener("click", copyHtmlSource);
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document.getElementById("download-html-btn")?.addEventListener("click", downloadHtml);
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document.getElementById("download-html-source-btn")?.addEventListener("click", downloadHtmlSource);
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});
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Reference in New Issue
Block a user