From b231e8a664edb740d9631cf6dd9477e2eece227e Mon Sep 17 00:00:00 2001
From: Andy Scherzinger <info@andy-scherzinger.de>
Date: Wed, 28 Oct 2026 07:07:57 +0100
Subject: [PATCH] feat(viewer): export FreeMind and XMind maps as KityMinder
 files

FreeMind and XMind maps open read-only, since the app cannot write
those formats back. Offer them an export to KityMinder (.km) in the
export menu, so edits can be kept in a format the app saves. The entry
is only shown for files that cannot be saved in their own format.

Assisted-by: Claude Code:claude-opus-5-5
Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>
(cherry picked from commit b0cec9b7bcb142e1a97a0953ec440d4f2689b1f8)
Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>
---
 src/viewer.js        | 9 +++++++++
 templates/viewer.php | 3 +++
 2 files changed, 12 insertions(+)

diff --git a/src/viewer.js b/src/viewer.js
index 46108aa0..ae003791 100644
--- a/src/viewer.js
+++ b/src/viewer.js
@@ -180,6 +180,9 @@ normalizeMouseWheel();
 			window.$('#export-text').click(function() {
 				self.exportText()
 			})
+			window.$('#export-km').click(function() {
+				self.exportKm()
+			})
 			window.$('#save-button').click(function() {
 				self.save()
 			})
@@ -349,6 +352,7 @@ normalizeMouseWheel();
 				/* When extension cannot write, hide save checkbox */
 				if (!window.parent.OCA.FilesMindMap._file.supportedWrite) {
 					window.$('#save-div').hide()
+					window.$('#export-km-item').prop('hidden', false)
 				}
 			}, function(msg) {
 				self._loadStatus = false
@@ -416,6 +420,11 @@ normalizeMouseWheel();
 			})
 		},
 
+		exportKm() {
+			const url = 'data:application/km;base64,' + Base64.encode(JSON.stringify(minder.exportJson()))
+			this.download(url, 'km')
+		},
+
 		exportPDF() {
 			const self = this
 			minder.exportData('png').then(function(data) {
diff --git a/templates/viewer.php b/templates/viewer.php
index 0dd52cc4..4615884a 100644
--- a/templates/viewer.php
+++ b/templates/viewer.php
@@ -170,6 +170,9 @@ class="btn btn-default export-caption dropdown-toggle"
             <li>
                 <a id="export-text" href="javascript:void(0)" target="_self"><?php p($l->t('Export to Text')); ?></a>
             </li>
+            <li id="export-km-item" hidden>
+                <a id="export-km" href="javascript:void(0)" target="_self"><?php p($l->t('Export to KityMinder (.km)')); ?></a>
+            </li>
         </ul>
     </div>
 </div>