feat(导出文档): 支持取消导出

assets/webui/ofdgo.css

@@ -803,6 +803,7 @@ button.outline-link:hover {
 .form-row[hidden],
 .page-list[hidden],
 .page-frame[hidden],
+.progress-panel > [hidden],
 .progress-panel[hidden] {
 	display: none;
 }
@@ -825,6 +826,10 @@ button.outline-link:hover {
 	backdrop-filter: blur(8px);
 }
 
+.progress-panel:has(> button:not([hidden])) {
+	grid-template-columns: auto minmax(0, 1fr) auto;
+}
+
 .progress-spinner {
 	width: 18px;
 	height: 18px;