fix setup of new document, closes #966

src/public/app/dialogs/markdown_import.js

@@ -0,0 +1,61 @@
+import libraryLoader from "../services/library_loader.js";
+import toastService from "../services/toast.js";
+import utils from "../services/utils.js";
+import appContext from "../services/app_context.js";
+
+const $dialog = $('#markdown-import-dialog');
+const $importTextarea = $('#markdown-import-textarea');
+const $importButton = $('#markdown-import-button');
+
+async function convertMarkdownToHtml(text) {
+    await libraryLoader.requireLibrary(libraryLoader.COMMONMARK);
+
+    const reader = new commonmark.Parser();
+    const writer = new commonmark.HtmlRenderer();
+    const parsed = reader.parse(text);
+
+    const result = writer.render(parsed);
+
+    appContext.triggerCommand('executeInActiveEditor', {
+        callback: textEditor => {
+            const viewFragment = textEditor.data.processor.toView(result);
+            const modelFragment = textEditor.data.toModel(viewFragment);
+
+            textEditor.model.insertContent(modelFragment, textEditor.model.document.selection);
+
+            toastService.showMessage("Markdown content has been imported into the document.");
+        }
+    });
+}
+
+export async function importMarkdownInline() {
+    if (appContext.tabManager.getActiveTabNoteType() !== 'text') {
+        return;
+    }
+
+    if (utils.isElectron()) {
+        const {clipboard} = utils.dynamicRequire('electron');
+        const text = clipboard.readText();
+
+        convertMarkdownToHtml(text);
+    }
+    else {
+        utils.openDialog($dialog);
+    }
+}
+
+async function sendForm() {
+    const text = $importTextarea.val();
+
+    $dialog.modal('hide');
+
+    await convertMarkdownToHtml(text);
+
+    $importTextarea.val('');
+}
+
+$importButton.on('click', sendForm);
+
+$dialog.on('shown.bs.modal', () => $importTextarea.trigger('focus'));
+
+utils.bindElShortcut($dialog, 'ctrl+return', sendForm);