ayanova/src/api/gzapi.js

@@ -263,14 +263,22 @@ export default {
   /////////////////////////////
   // Attachment download URL
   //
-  downloadUrl(fileId) {
+  downloadUrl(fileId, ctype) {
     //http://localhost:7575/api/v8/Attachment/download/100?t=sssss
-    return this.APIUrl(
+    //Ctype is optional and is the MIME content type, used to detect image urls at client for drag and drop ops
+    //in wiki but ignored by server
+
+    let url =
       "Attachment/download/" +
-        fileId +
-        "?t=" +
-        window.$gz.store.state.downloadToken
-    );
+      fileId +
+      "?t=" +
+      window.$gz.store.state.downloadToken;
+
+    if (ctype && ctype.includes("image")) {
+      url += "&i=1";
+    }
+
+    return this.APIUrl(url);
   },
   /////////////////////////////
   // REPLACE END OF URL

ayanova/src/api/gzutil.js

@@ -267,6 +267,9 @@ export default {
   // @return {string} A new string with the spliced substring.
   stringSplice: function(source, start, delCount, newSubStr) {
     if (source == null || source == "") {
+      if (newSubStr) {
+        return newSubStr;
+      }
       return "";
     }
     return (
@@ -339,6 +342,10 @@ export default {
       );
       return "fa-file";
     }
+
+    if (!mimeType) {
+      mimeType = "";
+    }
     mimeType = mimeType.toLowerCase();
 
     let iconFromExtension = extensions[extension];
@@ -355,6 +362,15 @@ export default {
     //   "gzutil:iconForFile -> No icon for file:" + fileName + " Mime:" + mimeType
     // );
     return "fa-file";
+  },
+  ///////////////////////////////////////////////
+  // attempt to detect image extension name
+  //
+  isImageURI: function(uri) {
+    if (!uri) {
+      return false;
+    }
+    return this.iconForFile(uri, "") == "fa-file-image";
   }
 
   /**