Changeset 933

Timestamp:

09/20/11 09:20:51 (14 years ago)

Author:

lgiessmann

Message:

gdl-frontend: Widgets: make the classes LoadSchemaCallback? and GdlWebPage? using LoadScreenPanel? to signal the user that the system is busy

Location:

branches/gdl-frontend/src/anaToMia/GDL_Widgets/src/us/isidor/gdl/anaToMia/Widgets

Files:

• base/TestClass.java (modified) (2 diffs)
• isidorus/GdlWebPage.java (modified) (7 diffs)
• isidorus/LoadSchemaCallback.java (modified) (4 diffs)

branches/gdl-frontend/src/anaToMia/GDL_Widgets/src/us/isidor/gdl/anaToMia/Widgets/base/TestClass.java ¶

@@ -6 +6 @@
 import com.google.gwt.core.client.EntryPoint;
 import com.google.gwt.user.client.Timer;
-import com.google.gwt.user.client.Window;
 import com.google.gwt.user.client.ui.HorizontalPanel;
 import com.google.gwt.user.client.ui.RootPanel;
@@ -24 +23 @@
                         public void run() {
                                 lsp.removeFromParent();
-                                Window.alert("timer fired event!");
                         }
                 };

branches/gdl-frontend/src/anaToMia/GDL_Widgets/src/us/isidor/gdl/anaToMia/Widgets/isidorus/GdlWebPage.java ¶

@@ -38 +38 @@
         private PsiContainer psiContainer = null;
         private GdlPanel gdlPanel = null;
+        private LoadScreenPanel loadScreenPanel = null;
         private final String GDL_PANEL_STYLE_NAME = "gdl_panel";
         private final String CREATE_NEW_BUTTON_STYLE_NAME = "create_new_button";
@@ -74 +75 @@
         
         public void resetPage() {
+                this.removeLoadScreenPanel();
                 if(gdlPanel != null) this.gdlPanel.removeFromParent();
                 if(this.psiContainer != null) this.psiContainer.removeFromParent();
@@ -85 +87 @@
                         Window.alert("could not create web page, becuase: (" + e.getClass() + ") " + e.getMessage());
                 }
+        }
+        
+        
+        public void removeLoadScreenPanel(){
+                if(this.loadScreenPanel != null) this.loadScreenPanel.removeFromParent();
+        }
+        
+        
+        public void createLoadScreenPanel(String title, String message){
+                this.removeLoadScreenPanel();
+                this.loadScreenPanel = new LoadScreenPanel(title, message);
+                RootPanel.get().add(this.loadScreenPanel);
         }
         
@@ -111 +125 @@
                 RequestBuilder builder = new RequestBuilder(RequestBuilder.POST, url);
                 try{
+                        this.createLoadScreenPanel("Wating for data", "Requesting all PSIs of instances of " + GdlWebPage.this.topicTypePsi + " from " + url);
                         builder.sendRequest(postData, new PsiRequest());
                 }catch(RequestException e){
@@ -130 +145 @@
                                 GdlWebPage.this.mainPanel.add(gdlPanel);
                                 gdlPanel.setTmEngine(new JtmsTmEngine());
-                                gdlPanel.setLoadSchemaCallback(new LoadSchemaCallback());
+                                gdlPanel.setLoadSchemaCallback(new LoadSchemaCallback(GdlWebPage.this));
                                 gdlPanel.setCommitCallback(new CommitCallback());
                                 gdlPanel.setDeleteCallback(new DeleteCallback());
@@ -155 +170 @@
                                         GdlWebPage.this.mainPanel.add(gdlPanel);
                                         gdlPanel.setTmEngine(new JtmsTmEngine());
-                                        gdlPanel.setLoadSchemaCallback(new LoadSchemaCallback());
+                                        gdlPanel.setLoadSchemaCallback(new LoadSchemaCallback(GdlWebPage.this));
                                         gdlPanel.setCommitCallback(new CommitCallback());
                                         gdlPanel.setDeleteCallback(new DeleteCallback());
@@ -217 +232 @@
                                 Window.alert("could not request existing instances of " + GdlWebPage.this.topicTypePsi + ", because(" + response.getStatusCode() + "): " + response.getStatusText());
                         }
+                        GdlWebPage.this.removeLoadScreenPanel();
                 }
                 

branches/gdl-frontend/src/anaToMia/GDL_Widgets/src/us/isidor/gdl/anaToMia/Widgets/isidorus/LoadSchemaCallback.java ¶

@@ -26 +26 @@
         private Pair<String, TopicIdentifierTypes> requestedTopicToEdit = null;
         private RequestBuilder requestBuilder = new RequestBuilder(RequestBuilder.GET, isidorusUrl);
+        private GdlWebPage gdlWebPage = null;
+        
+        @SuppressWarnings("unused")
+        private LoadSchemaCallback(){}
         
         
-        public LoadSchemaCallback(){}
+        public LoadSchemaCallback(GdlWebPage gdlWebPage){
+                this.gdlWebPage = gdlWebPage;
+        }
         
         
@@ -36 +42 @@
                 this.requestedTopicsToCreate = requestedTopicsToCreate;
                 this.requestedTopicToEdit = requestedTopicToEdit;
+                this.gdlWebPage.createLoadScreenPanel("Requesting and Processing GDL data", "requesting a GDL-Schema from " + IsidorusConstants.GET_SCHEMA_REQUEST_URL + " and creating the corresponding UI-fragment");
                 requestBuilder.sendRequest(null, new RequestCallbackImpl(panel));
         }
@@ -90 +97 @@
                                 dialog.center();
                         }
+                        LoadSchemaCallback.this.gdlWebPage.removeLoadScreenPanel();
                 }
                 
@@ -116 +124 @@
                         
                         dialog.center();
+                        LoadSchemaCallback.this.gdlWebPage.removeLoadScreenPanel();
                 }
         }