feat(java): refresh file config

web/documentserver-example/java/src/main/java/controllers/IndexServlet.java

@@ -20,6 +20,8 @@ package controllers;
 
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
+import com.google.gson.reflect.TypeToken;
+import entities.FileModel;
 import entities.FileType;
 import entities.User;
 import helpers.ConfigManager;
@@ -143,6 +145,9 @@ public class IndexServlet extends HttpServlet {
             case "formats":
                 formats(request, response, writer);
                 break;
+            case "config":
+                config(request, response, writer);
+                break;
             default:
                 break;
         }
@@ -1074,6 +1079,57 @@ public class IndexServlet extends HttpServlet {
         writer.write(gson.toJson(data));
     }
 
+    private static void config(final HttpServletRequest request,
+                                final HttpServletResponse response,
+                                final PrintWriter writer) {
+        try {
+            String fileName = FileUtility.getFileName(request.getParameter("fileName"));
+            String permissions = FileUtility.getFileName(request.getParameter("permissions"));
+            Boolean directUrl = request.getParameter("directUrl").toLowerCase() == "true";
+
+            if (!new File(DocumentManager.storagePath(fileName, null)).exists()) {
+                throw(new Exception("File not found"));
+            }
+
+            CookieManager cm = new CookieManager(request);
+            User user = Users.getUser(cm.getCookie("uid"));
+            Gson gson = new Gson();
+
+            Map<String, Object> document = new HashMap<>();
+            document.put("title", fileName);
+            document.put("key", ServiceConverter
+                .generateRevisionId(DocumentManager
+                    .curUserHostAddress(null) + "/" + fileName + "/"
+                    + Long.toString(new File(DocumentManager.storagePath(fileName, null))
+                    .lastModified())));
+            document.put("url", DocumentManager.getDownloadUrl(fileName, true));
+            document.put("referenceData", new FileModel.ReferenceData(
+                fileName, DocumentManager.curUserHostAddress(null), user));
+            document.put("permissions", gson.fromJson(permissions, new TypeToken<Map<String, Object>>() { }.getType()));
+            if (directUrl) {
+                document.put("directUrl", DocumentManager.getDownloadUrl(fileName, false));
+            }
+
+            Map<String, Object> editorConfig = new HashMap<>();
+            editorConfig.put("mode", "edit");
+            editorConfig.put("callbackUrl", DocumentManager.getCallback(fileName));
+
+            Map<String, Object> config = new HashMap<>();
+            config.put("document", document);
+            config.put("editorConfig", editorConfig);
+            if (DocumentManager.tokenEnabled()) {
+                config.put("token", DocumentManager.createToken(config));
+            }
+
+            writer.write(gson.toJson(config));
+        } catch (Exception ex) {
+            JSONObject responseBody = new JSONObject();
+            responseBody.put("error", ex.getMessage());
+            String responseContent = responseBody.toJSONString();
+            writer.write(responseContent);
+        }
+    }
+
     // process get request
     @Override
     protected void doGet(final HttpServletRequest request,

web/documentserver-example/java/src/main/java/entities/FileModel.java

@@ -375,7 +375,7 @@ public class FileModel {
         }
     }
 
-    public class ReferenceData {
+    public static class ReferenceData {
         private final String instanceId;
         private final Map<String, String> fileKey;
         public ReferenceData(final String fileName, final String curUserHostAddress, final User user) {

web/documentserver-example/java/src/main/java/helpers/Users.java

@@ -84,6 +84,7 @@ public final class Users {
         add("Can't protect file");
         add("View file without collaboration");
         add("Can’t submit forms");
+        add("Can't refresh outdated file");
     }};
 
     private static List<User> users = new ArrayList<User>() {{

web/documentserver-example/java/src/main/webapp/editor.jsp

@@ -170,6 +170,18 @@
             }
         };
 
+        var onRequestRefreshFile = function(event) {
+            let xhr = new XMLHttpRequest();
+            xhr.open("GET", "IndexServlet?type=config&fileName=" + encodeURIComponent(config.document.title) +
+                "&directUrl=" + !!config.document.directUrl +
+                "&permissions=" + encodeURIComponent(JSON.stringify(config.document.permissions)));
+            xhr.send();
+            xhr.onload = function () {
+                innerAlert(xhr.responseText);
+                docEditor.refreshFile(JSON.parse(xhr.responseText));
+            };
+        };
+
         var onRequestOpen = function(event) {  // user open external data source
             innerAlert("onRequestOpen");
             var windowName = event.data.windowName;
@@ -366,6 +378,7 @@
         };
 
         if (config.editorConfig.user.id) {
+            config.events['onRequestRefreshFile'] = onRequestRefreshFile;
             config.events['onRequestClose'] = onRequestClose;
             // add mentions for not anonymous users
             config.events['onRequestUsers'] = onRequestUsers;