truncate file in webview

.idea/gradle.xml

@@ -4,16 +4,16 @@
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
-        <option name="testRunner" value="GRADLE" />
-        <option name="distributionType" value="DEFAULT_WRAPPED" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
         <option name="gradleHome" value="$USER_HOME$/gradle" />
+        <option name="gradleJvm" value="#GRADLE_LOCAL_JAVA_HOME" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />
             <option value="$PROJECT_DIR$/app" />
           </set>
         </option>
+        <option name="resolveExternalAnnotations" value="false" />
       </GradleProjectSettings>
     </option>
   </component>

.idea/misc.xml

@@ -1,6 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">

app/src/main/java/org/wntr/mdeditor/MainActivity.kt

@@ -707,7 +707,6 @@ class MainActivity : AppCompatActivity() {
             ).show()
         })
         startActivityForResult(intent, CREATE_FILE)
-        Log.i(javaClass.simpleName, "Buffer geschrieben")
     }
 
     /* Cut is not possible currently because of the deactivation of the custom text selection and
@@ -878,8 +877,30 @@ class MainActivity : AppCompatActivity() {
                 return
             }
             if (truncate) {
-                mdeValue = ""
                 truncate = false
+                val script = "if (typeof easyMDE !== 'undefined') {" +
+                        "easyMDE.codemirror.doc.setValue(``);" +
+                        "easyMDE.codemirror.doc.markClean();" +
+                        "easyMDE.updateStatusBar(\"editor-statusbar-left\",saveStatus());" +
+                        "easyMDE.codemirror.focus();" +
+                        "easyMDE.updateStatusBar(\"displayName\",\"${getDisplayName(applicationContext, thisFileUri)}\");}"
+
+                // TODO: refactor autosavetimer init to own method
+                Log.d(javaClass.simpleName, "executing in webview:\n${script}")
+                webView.evaluateJavascript(script, {
+                    mdeValue = ""
+                    autosaveTimer = fixedRateTimer("timer",true,0,5000){
+                        this@MainActivity.runOnUiThread {
+                            val script = "easyMDE.codemirror.doc.isClean();"
+                            webView.evaluateJavascript(script , {
+                                if (it == "false" && thisFileUri != null) {
+                                    saveFile()
+                                }
+                            })
+                        }
+                    }
+                    Log.d(javaClass.simpleName, "AutosaveTimer started.")
+                })
             }
             FileOutputStream(textFile.fileDescriptor).use {
                 it.write(mdeValue.toByteArray())