X-Git-Url: https://git.mdrn.pl/redakcja.git/blobdiff_plain/020ad779bc86249cd11cb8aa4970420b16789f55..a9efc708bce6a636b314c58b3c9769488e8d5999:/platforma/static/js/models.js?ds=sidebyside

diff --git a/platforma/static/js/models.js b/platforma/static/js/models.js
old mode 100644
new mode 100755
index fe42e895..dae64d8a
--- a/platforma/static/js/models.js
+++ b/platforma/static/js/models.js
@@ -36,85 +36,247 @@ Editor.ToolbarButtonsModel = Editor.Model.extend({
 });
 
 
-// Stany modelu:
 //
-//                  -> error -> loading
-//                 /
-// empty -> loading -> synced -> unsynced -> loading
-//                           \
-//                            -> dirty -> updating -> updated -> synced
+// HTML Document Model
 //
-Editor.XMLModel = Editor.Model.extend({
-    _className: 'Editor.XMLModel',
-    serverURL: null,
-    data: '',
+Editor.HTMLModel = Editor.Model.extend({
+    _className: 'Editor.HTMLModel',
+    textURL: null,    
     state: 'empty',
-  
-    init: function(document, serverURL) {
+
+    init: function(document, textURL) {
         this._super();
         this.set('state', 'empty');
         this.set('revision', document.get('revision'));
         this.document = document;
-        this.serverURL = serverURL;
-        this.toolbarButtonsModel = new Editor.ToolbarButtonsModel();
+
+        this.textURL = textURL;        
+
+        this.htmlXSL = null;
+        this.wlmlXSL = null;
+        this.rawText = null;
+
+        // create a parser and a serializer
+        this.parser = new DOMParser();
+        this.serializer = new XMLSerializer();
+
         this.addObserver(this, 'data', this.dataChanged.bind(this));
     },
-  
+
     load: function(force) {
         if (force || this.get('state') == 'empty') {
             this.set('state', 'loading');
-            messageCenter.addMessage('info', 'xmlload', 'Wczytuję XML...');
+            messageCenter.addMessage('info', 'xmlload', 'Wczytuję HTML...');
+
+            // request all stylesheets
             $.ajax({
-                url: this.serverURL,
+                url: documentInfo.staticURL + 'xsl/wl2html_client.xsl',
+                dataType: 'xml',                
+                success: this.htmlXSLLoadSuccess.bind(this),
+                error: this.loadingFailed.bind(this)
+            });
+
+            $.ajax({
+                url: documentInfo.staticURL + 'xsl/html2wl_client.xsl',
+                dataType: 'xml',
+                success: this.wlmlXSLLoadSuccess.bind(this),
+                error: this.loadingFailed.bind(this)
+            });
+
+            $.ajax({
+                url: this.textURL,
                 dataType: 'text',
                 data: {
                     revision: this.get('revision'),
                     user: this.document.get('user')
                     },
-                success: this.loadingSucceeded.bind(this),
+                success: this.textLoadSuccess.bind(this),
                 error: this.loadingFailed.bind(this)
             });
             return true;
         }
         return false;
     },
-  
-    loadingSucceeded: function(data) {
+
+    asWLML: function(element, inner)
+    {
+        console.log("Source", element);
+        var doc = this.parser.parseFromString(this.serializer.serializeToString(element), 'text/xml');
+
+        var result = this.wlmlXSL.transformToDocument(doc);
+
+        if(!result) {
+            console.log("Failed", this.wlmlXSL, doc);
+            throw "Failed to transform fragment";
+        }
+        
+        console.log("Transformed", doc, " to: ", result.documentElement);
+        if(inner) {
+            var children = result.documentElement.childNodes;
+            var buf = '';
+            
+            for(var i=0; i < children.length; i++)
+                buf += this.serializer.serializeToString(children.item(i));
+            
+            return buf;
+         }
+          
+         return this.serializer.serializeToString(result.documentElement);
+    },
+
+    innerAsWLML: function(elem)
+    {
+        return this.asWLML(elem, true);
+    },
+
+    updateInnerWithWLML: function($element, innerML)
+    {
+        var e = $element.clone().html('<span x-node="out-of-flow-text" x-content="%"></span>')[0];
+        var s = this.asWLML(e);
+        // hurray for dirty hacks :P
+        s = s.replace(/>%<\//, '>'+innerML+'</');
+        return this.updateWithWLML($element, s);
+    },
+
+    updateWithWLML: function($element, text)
+    {
+        // filter the string
+        text = text.replace(/\/\s+/g, '<br />');
+        try {
+            var chunk = this.parser.parseFromString("<chunk>"+text+"</chunk>", "text/xml");
+        } catch(e) {
+            console.log('Caught parse exception.');
+            return "<p>Źle sformatowana zawartość:" + e.toString() + "</p>";
+        }
+
+        var parseError = chunk.getElementsByTagName('parsererror');
+        console.log("Errors:", parseError);
+        
+        if(parseError.length > 0)
+        {
+            console.log("Parse errors.")
+            return this.serializer.serializeToString(parseError.item(0));
+        }
+
+        console.log("Transforming to HTML");        
+        var result = this.htmlXSL.transformToFragment(chunk, $element[0].ownerDocument).firstChild;
+
+        if(!result) {
+            return "Błąd aplikacji - nie udało się wygenerować nowego widoku HTML.";
+        }
+
+        var errors = result.getElementsByTagName('error');
+        if(errors.length > 0)
+        {
+            var errorMessage = 'Wystąpiły błędy:<ul>';
+            for(var i=0; i < errors.length; i++)
+            {
+                var estr = this.serializer.serializeToString(errors.item(i));
+                console.log("XFRM error:", estr);
+                errorMessage += "<li>"+estr+"</li>";
+            }
+            errorMessage += "</ul>";
+            return errorMessage;
+        }
+
+        try {
+            $element.replaceWith(result);
+            this.set('state', 'dirty');
+            return false;
+        } catch(e) {
+            return "Błąd podczas wstawiania tekstu: '" + e.toString() + "'";
+        }
+    },
+
+    createXSLT: function(xslt_doc) {
+        var p = new XSLTProcessor();
+        p.importStylesheet(xslt_doc);
+        return p;
+    },
+
+    htmlXSLLoadSuccess: function(data) 
+    {
+        try {
+            this.htmlXSL = this.createXSLT(data);
+
+            if(this.wlmlXSL && this.htmlXSL && this.rawText)
+                this.loadSuccess();
+        } catch(e) {
+            console.log(e);
+            this.set('error', e.toString() );
+            this.set('state', 'error');
+        }
+    },
+
+    wlmlXSLLoadSuccess: function(data)
+    {
+        try {
+            this.wlmlXSL = this.createXSLT(data);
+
+            if(this.wlmlXSL && this.htmlXSL && this.rawText)
+                this.loadSuccess();
+        } catch(e) {
+            console.log(e);
+            this.set('error', e.toString() );
+            this.set('state', 'error');
+        }
+    },
+
+    textLoadSuccess: function(data) {
+        this.rawText = data;
+
+        if(this.wlmlXSL && this.htmlXSL && this.rawText)
+                this.loadSuccess();
+    },
+
+    loadSuccess: function() {
         if (this.get('state') != 'loading') {
             alert('erroneous state:', this.get('state'));
         }
-        this.set('data', data);
+
+        // prepare text
+        var doc = null;
+        doc = this.rawText.replace(/\/\s+/g, '<br />');
+        doc = this.parser.parseFromString(doc, 'text/xml');
+        doc = this.htmlXSL.transformToFragment(doc, document).firstChild;
+
+        this.set('data', doc);
         this.set('state', 'synced');
-        messageCenter.addMessage('success', 'xmlload', 'Wczytałem XML :-)');
+        messageCenter.addMessage('success', 'xmlload', 'Wczytałem HTML :-)');
     },
-  
-    loadingFailed: function() {
+
+    loadingFailed: function(response)
+    {
         if (this.get('state') != 'loading') {
             alert('erroneous state:', this.get('state'));
         }
+
         var message = parseXHRError(response);
-        
+
         this.set('error', '<h2>Błąd przy ładowaniu XML</h2><p>'+message+'</p>');
         this.set('state', 'error');
-        messageCenter.addMessage('error', 'xmlload', 'Nie udało mi się wczytać XML. Spróbuj ponownie :-(');
+        messageCenter.addMessage('error', 'xmlload', 'Nie udało mi się wczytać HTML. Spróbuj ponownie :-(');
     },
-  
+
     save: function(message) {
         if (this.get('state') == 'dirty') {
-            this.set('state', 'updating');
-            messageCenter.addMessage('info', 'xmlsave', 'Zapisuję XML...');
-      
+            this.set('state', 'saving');
+            
+            messageCenter.addMessage('info', 'htmlsave', 'Zapisuję HTML...');
+            var wlml = this.asWLML(this.get('data'));
+
             var payload = {
-                contents: this.get('data'),
+                contents: wlml,
                 revision: this.get('revision'),
                 user: this.document.get('user')
             };
+
             if (message) {
                 payload.message = message;
             }
-      
+
             $.ajax({
-                url: this.serverURL,
+                url: this.textURL,
                 type: 'post',
                 dataType: 'json',
                 data: payload,
@@ -125,24 +287,24 @@ Editor.XMLModel = Editor.Model.extend({
         }
         return false;
     },
-  
+
     saveSucceeded: function(data) {
-        if (this.get('state') != 'updating') {
+        if (this.get('state') != 'saving') {
             alert('erroneous state:', this.get('state'));
         }
         this.set('revision', data.revision);
         this.set('state', 'updated');
-        messageCenter.addMessage('success', 'xmlsave', 'Zapisałem XML :-)');
+        messageCenter.addMessage('success', 'htmlsave', 'Zapisałem :-)');
     },
-  
+
     saveFailed: function() {
-        if (this.get('state') != 'updating') {
+        if (this.get('state') != 'saving') {
             alert('erroneous state:', this.get('state'));
         }
-        messageCenter.addMessage('error', 'xmlsave', 'Nie udało mi się zapisać XML. Spróbuj ponownie :-(');
+        messageCenter.addMessage('error', 'htmlsave', 'Nie udało mi się zapisać.');
         this.set('state', 'dirty');
     },
-  
+
     // For debbuging
     set: function(property, value) {
         if (property == 'state') {
@@ -150,13 +312,13 @@ Editor.XMLModel = Editor.Model.extend({
         }
         return this._super(property, value);
     },
-  
+
     dataChanged: function(property, value) {
         if (this.get('state') == 'synced') {
             this.set('state', 'dirty');
         }
     },
-  
+
     dispose: function() {
         this.removeObserver(this);
         this._super();
@@ -164,36 +326,36 @@ Editor.XMLModel = Editor.Model.extend({
 });
 
 
-Editor.HTMLModel = Editor.Model.extend({
-    _className: 'Editor.HTMLModel',
-    dataURL: null,
-    htmlURL: null,
-    renderURL: null,
-    displaData: '',
-    xmlParts: {},
+// Stany modelu:
+//
+//                  -> error -> loading
+//                 /
+// empty -> loading -> synced -> unsynced -> loading
+//                           \
+//                            -> dirty -> updating -> updated -> synced
+//
+Editor.XMLModel = Editor.Model.extend({
+    _className: 'Editor.XMLModel',
+    serverURL: null,
+    data: '',
     state: 'empty',
   
-    init: function(document, dataURL, htmlURL) {
+    init: function(document, serverURL) {
         this._super();
         this.set('state', 'empty');
-        this.set('revision', document.get('revision'));        
-        
+        this.set('revision', document.get('revision'));
         this.document = document;
-        this.htmlURL = htmlURL;
-        this.dataURL = dataURL;
-        this.renderURL = documentInfo.renderURL;
-        this.xmlParts = {};
+        this.serverURL = serverURL;
+        this.toolbarButtonsModel = new Editor.ToolbarButtonsModel();
+        this.addObserver(this, 'data', this.dataChanged.bind(this));
     },
   
     load: function(force) {
         if (force || this.get('state') == 'empty') {
             this.set('state', 'loading');
-
-            // load the transformed data
-            // messageCenter.addMessage('info', 'Wczytuję HTML...');
-
+            messageCenter.addMessage('info', 'xmlload', 'Wczytuję XML...');
             $.ajax({
-                url: this.htmlURL,
+                url: this.serverURL,
                 dataType: 'text',
                 data: {
                     revision: this.get('revision'),
@@ -202,8 +364,10 @@ Editor.HTMLModel = Editor.Model.extend({
                 success: this.loadingSucceeded.bind(this),
                 error: this.loadingFailed.bind(this)
             });
+            return true;
         }
-    },    
+        return false;
+    },
   
     loadingSucceeded: function(data) {
         if (this.get('state') != 'loading') {
@@ -211,95 +375,38 @@ Editor.HTMLModel = Editor.Model.extend({
         }
         this.set('data', data);
         this.set('state', 'synced');
+        messageCenter.addMessage('success', 'xmlload', 'Wczytałem XML :-)');
     },
   
-    loadingFailed: function(response) {
+    loadingFailed: function(response)
+    {
         if (this.get('state') != 'loading') {
             alert('erroneous state:', this.get('state'));
         }
         
         var message = parseXHRError(response);
         
-        this.set('error', '<p>Nie udało się wczytać widoku HTML: </p>' + message);
-        this.set('state', 'error');        
-    },
-
-    getXMLPart: function(elem, callback)
-    {
-        var path = elem.attr('wl2o:path');
-        if(!this.xmlParts[path])
-            this.loadXMLPart(elem, callback);
-        else
-            callback(path, this.xmlParts[path]);
-    },
-
-    loadXMLPart: function(elem, callback)
-    {
-        var path = elem.attr('wl2o:path');
-        var self = this;
-
-        $.ajax({
-            url: this.dataURL,
-            dataType: 'text',
-            data: {
-                revision: this.get('revision'),
-                user: this.document.get('user'),
-                part: path
-            },
-            success: function(data) {
-                self.xmlParts[path] = data;
-                callback(path, data);
-            },
-            // TODO: error handling
-            error: function(data) {
-                console.log('Failed to load fragment');
-                callback(undefined, undefined);
-            }
-        });
-    },
-
-    putXMLPart: function(elem, data) {
-        var self = this;
-      
-        var path = elem.attr('wl2o:path');
-        this.xmlParts[path] = data;
-
-        this.set('state', 'unsynced');
-
-        /* re-render the changed fragment */
-        $.ajax({
-            url: this.renderURL,
-            type: "POST",
-            dataType: 'text; charset=utf-8',
-            data: {
-                fragment: data,
-                part: path
-            },
-            success: function(htmldata) {
-                elem.replaceWith(htmldata);
-                self.set('state', 'dirty');
-            }
-        });
+        this.set('error', '<h2>Błąd przy ładowaniu XML</h2><p>'+message+'</p>');
+        this.set('state', 'error');
+        messageCenter.addMessage('error', 'xmlload', 'Nie udało mi się wczytać XML. Spróbuj ponownie :-(');
     },
-
+  
     save: function(message) {
         if (this.get('state') == 'dirty') {
             this.set('state', 'updating');
-
+            messageCenter.addMessage('info', 'xmlsave', 'Zapisuję XML...');
+      
             var payload = {
-                chunks: $.toJSON(this.xmlParts),
+                contents: this.get('data'),
                 revision: this.get('revision'),
                 user: this.document.get('user')
             };
-
             if (message) {
                 payload.message = message;
             }
-
-            console.log(payload)
-
+      
             $.ajax({
-                url: this.dataURL,
+                url: this.serverURL,
                 type: 'post',
                 dataType: 'json',
                 data: payload,
@@ -309,45 +416,52 @@ Editor.HTMLModel = Editor.Model.extend({
             return true;
         }
         return false;
-      
     },
-
+  
     saveSucceeded: function(data) {
         if (this.get('state') != 'updating') {
             alert('erroneous state:', this.get('state'));
         }
-
-        // flush the cache
-        this.xmlParts = {};
-    
         this.set('revision', data.revision);
         this.set('state', 'updated');
+        messageCenter.addMessage('success', 'xmlsave', 'Zapisałem XML :-)');
     },
-
+  
     saveFailed: function() {
         if (this.get('state') != 'updating') {
             alert('erroneous state:', this.get('state'));
-        }        
+        }
+        messageCenter.addMessage('error', 'xmlsave', 'Nie udało mi się zapisać XML. Spróbuj ponownie :-(');
         this.set('state', 'dirty');
     },
-
+  
     // For debbuging
     set: function(property, value) {
         if (property == 'state') {
             console.log(this.description(), ':', property, '=', value);
         }
         return this._super(property, value);
+    },
+  
+    dataChanged: function(property, value) {
+        if (this.get('state') == 'synced') {
+            this.set('state', 'dirty');
+        }
+    },
+  
+    dispose: function() {
+        this.removeObserver(this);
+        this._super();
     }
 });
 
-
 Editor.ImageGalleryModel = Editor.Model.extend({
     _className: 'Editor.ImageGalleryModel',
     serverURL: null,
     data: [],
     state: 'empty',
 
-    init: function(serverURL) {
+    init: function(document, serverURL) {
         this._super();
         this.set('state', 'empty');
         this.serverURL = serverURL;
@@ -355,18 +469,40 @@ Editor.ImageGalleryModel = Editor.Model.extend({
         this.pages = [];
     },
 
+    setGallery: function(path) {
+      $.ajax({
+          url: this.serverURL,
+          type: 'post',
+          data: {
+              path: path,
+          },
+          success: this.settingGallerySucceeded.bind(this)           
+      });
+    },
+    
+    settingGallerySucceeded: function(data) {
+      console.log('settingGallerySucceeded');
+      this.load(true);
+    },
+    
     load: function(force) {
         if (force || this.get('state') == 'empty') {
+            console.log("setting state");
             this.set('state', 'loading');
+            console.log("going ajax");
             $.ajax({
                 url: this.serverURL,
                 dataType: 'json',
-                success: this.loadingSucceeded.bind(this)
+                success: this.loadingSucceeded.bind(this),
+                error: this.loadingFailed.bind(this)
             });
         }
     },
 
-    loadingSucceeded: function(data) {
+    loadingSucceeded: function(data) 
+    {
+        console.log("success");        
+        
         if (this.get('state') != 'loading') {
             alert('erroneous state:', this.get('state'));
         }
@@ -382,6 +518,16 @@ Editor.ImageGalleryModel = Editor.Model.extend({
         this.set('state', 'synced');
     },
 
+    loadingFailed: function(data) {
+        console.log("failed");
+
+        if (this.get('state') != 'loading') {
+            alert('erroneous state:', this.get('state'));
+        }       
+
+        this.set('state', 'error');
+    },
+
     set: function(property, value) {
         if (property == 'state') {
             console.log(this.description(), ':', property, '=', value);
@@ -428,7 +574,7 @@ Editor.DocumentModel = Editor.Model.extend({
 
         this.contentModels = {
             'xml': new Editor.XMLModel(this, data.text_url),
-            'html': new Editor.HTMLModel(this, data.text_url, data.html_url),
+            'html': new Editor.HTMLModel(this, data.text_url),
             'gallery': new Editor.ImageGalleryModel(this, data.gallery_url)
         };        
 
@@ -446,8 +592,8 @@ Editor.DocumentModel = Editor.Model.extend({
             alert('erroneous state:', this.get('state'));
         }
         
-        var message = parseXHRError(response);        
-        this.set('error', '<h2>Nie udało się wczytać dokumentu</h2><p>'+message+"</p>");
+        var err = parseXHRError(response);
+        this.set('error', '<h2>Nie udało się wczytać dokumentu</h2><p>'+err.error_message+"</p>");
         this.set('state', 'error');
     },
   
@@ -501,53 +647,58 @@ Editor.DocumentModel = Editor.Model.extend({
                 revision: this.get('revision'),
                 user: this.get('user')
             },
-            complete: this.updateCompleted.bind(this),
-            success: function(data) {
-                this.set('updateData', data);
-                console.log("new data:", data)
-            }.bind(this)
+            complete: this.updateCompleted.bind(this)           
         });
     },
   
-    updateCompleted: function(xhr, textStatus) {
-        console.log(xhr.status, textStatus);
-        
-        if (xhr.status == 200) 
+    updateCompleted: function(xhr, textStatus)
+    {
+        console.log(xhr.status, xhr.responseText);
+        var response = parseXHRResponse(xhr);
+        if(response.success)
         {
-            var udata = this.get('updateData');
-            if(udata.timestamp == udata.parent_timestamp)
+            if( (response.data.result == 'no-op')
+             || (response.data.timestamp == response.data.parent_timestamp))
             {
-                // no change
+                if( (response.data.revision) && (response.data.revision != this.get('revision')) )
+                {
+                    // we're out of sync
+                    this.set('state', 'unsynced');
+                    return;
+                }
+                
                 messageCenter.addMessage('info', 'doc_update',
-                    'Nic się nie zmieniło od ostatniej aktualizacji. Po co mam uaktualniać?');
+                    'Już posiadasz najbardziej aktualną wersję.');
+                    this.set('state', 'synced');
+                return;
+            }
+
+            // result: success
+            this.set('revision', response.data.revision);
+            this.set('user', response.data.user);
 
+            messageCenter.addMessage('info', 'doc_update',
+                'Uaktualnienie dokumentu do wersji ' + response.data.revision);
+
+            for (var key in this.contentModels) {
+                this.contentModels[key].set('revision', this.get('revision') );
+                this.contentModels[key].set('state', 'empty');
             }
-            else {
-                this.set('revision', udata.revision);
-                this.set('user', udata.user);
-                messageCenter.addMessage('info', 'doc_update', 
-                    'Uaktualnienie dokumentu do wersji ' + udata.revision);
-
-                for (var key in this.contentModels) {
-                    this.contentModels[key].set('revision', this.get('revision') );
-                    this.contentModels[key].set('state', 'empty');
-                }
-            }        
-        } else if (xhr.status == 409) { // Konflikt podczas operacji
-            messageCenter.addMessage('error', 'doc_update',
-                'Wystąpił konflikt podczas aktualizacji. Pędź po programistów! :-(');
-        } else {
-            messageCenter.addMessage('critical', 'doc_update',
-                'Nieoczekiwany błąd. Pędź po programistów! :-(');
+
+            this.set('state', 'synced');
+            return;
         }
+
+        // no success means trouble
+        messageCenter.addMessage(response.error_level, 'doc_update', 
+            response.error_message);       
         
-        this.set('state', 'synced');
-        this.set('updateData', null);
+        this.set('state', 'unsynced');
     },
   
     merge: function(message) {
         this.set('state', 'loading');
-        messageCenter.addMessage('info', null, 
+        messageCenter.addMessage('info', 'doc_merge',
             'Scalam dokument z głównym repozytorium...');
             
         $.ajax({
@@ -568,28 +719,53 @@ Editor.DocumentModel = Editor.Model.extend({
     },
   
     mergeCompleted: function(xhr, textStatus) {
-        console.log(xhr.status, textStatus);
-        if (xhr.status == 200) { // Sukces
-            this.set('revision', this.get('updateData').revision);
-            this.set('user', this.get('updateData').user);
-            
-            for (var key in this.contentModels) {
-                this.contentModels[key].set('revision', this.get('revision'));
-                this.contentModels[key].set('state', 'empty');
+        console.log(xhr.status, xhr.responseText);
+        var response = parseXHRResponse(xhr);
+        
+        if(response.success) {
+        
+            if( (response.data.result == 'no-op') ||             
+             ( response.data.shared_parent_timestamp
+               && response.data.shared_timestamp
+               && (response.data.shared_timestamp == response.data.shared_parent_timestamp)) )
+            {
+                if( (response.data.revision) && (response.data.revision != this.get('revision')) )
+                {
+                    // we're out of sync
+                    this.set('state', 'unsynced');
+                    return;
+                }
+
+                messageCenter.addMessage('info', 'doc_merge',
+                    'Twoja aktualna wersja nie różni się od ostatnio zatwierdzonej.');
+                this.set('state', 'synced');
+                return;
+            }
+
+            if( response.data.result == 'accepted')
+            {
+                messageCenter.addMessage('info', 'doc_merge',
+                    'Prośba o zatwierdzenie została przyjęta i oczekuję na przyjęcie.');
+                this.set('state', 'synced');
+                return;
             }
 
-            messageCenter.addMessage('success', null, 'Scaliłem dokument z głównym repozytorium :-)');
-        } else if (xhr.status == 202) { // Wygenerowano PullRequest
-            messageCenter.addMessage('success', null, 'Wysłałem prośbę o scalenie dokumentu z głównym repozytorium.');
-        } else if (xhr.status == 204) { // Nic nie zmieniono
-            messageCenter.addMessage('info', null, 'Nic się nie zmieniło od ostatniego scalenia. Po co mam scalać?');
-        } else if (xhr.status == 409) { // Konflikt podczas operacji
-            messageCenter.addMessage('error', null, 'Wystąpił konflikt podczas scalania. Pędź po programistów! :-(');
-        } else if (xhr.status == 500) {
-            messageCenter.addMessage('critical', null, 'Błąd serwera. Pędź po programistów! :-(');
+            // result: success
+            this.set('revision', response.data.revision);
+            this.set('user', response.data.user);
+
+            messageCenter.addMessage('info', 'doc_merge',
+                'Twoja wersja dokumentu została zatwierdzona.');
+            
+            this.set('state', 'synced');
+            return;
         }
-        this.set('state', 'synced');
-        this.set('mergeData', null);
+
+        // no success means trouble
+        messageCenter.addMessage(response.error_level, 'doc_merge',
+            response.error_message);
+
+        this.set('state', 'unsynced');
     },
   
     // For debbuging