Fix more loading issues with the data table samples.

Author: BenDol

src/main/java/gwt/material/design/demo/client/application/datatable/contextmenu/ContextMenuDataTableView.java

@@ -63,16 +63,7 @@ interface Binder extends UiBinder<Widget, ContextMenuDataTableView> {
     @Inject
     ContextMenuDataTableView(Binder uiBinder) {
         initWidget(uiBinder.createAndBindUi(this));
-    }
-
-    @Override
-    protected void onAttach() {
-        super.onAttach();
-
-        loadDataTable();
-    }
 
-    protected void loadDataTable() {
         // We will manually add this category otherwise categories
         // can be loaded on the fly with HasDataCategory, or a custom
         // RowComponentFactory as demonstrated below
@@ -174,7 +165,7 @@ public MaterialBadge getValue(Person object) {
         // Generate 20 categories
         int rowIndex = 0;
         List<Person> people = new ArrayList<>();
-        for(int k = 1; k <= 5; k++){
+        for(int k = 1; k <= 2; k++){
             // Generate 100 rows
             for(int i = 1; i <= 10; i++, rowIndex++){
                 people.add(new Person(i, "http://joashpereira.com/templates/material_one_pager/img/avatar1.png", "Field " + rowIndex, "Field " + i, "Field " + rowIndex, "No " + i,"Category " + k));            }

src/main/java/gwt/material/design/demo/client/application/datatable/custom/CustomDataTableView.java

@@ -57,16 +57,7 @@ interface Binder extends UiBinder<Widget, CustomDataTableView> {
     @Inject
     CustomDataTableView(Binder uiBinder) {
         initWidget(uiBinder.createAndBindUi(this));
-    }
-
-    @Override
-    protected void onAttach() {
-        super.onAttach();
-
-        loadDataTable();
-    }
 
-    protected void loadDataTable() {
         // TODO Issue with the onload / unload update
         /*// Setting table title
         table.getTableTitle().setText("My Custom Table");

src/main/java/gwt/material/design/demo/client/application/datatable/infinite/InfiniteDataTableView.java

@@ -61,17 +61,6 @@ interface Binder extends UiBinder<Widget, InfiniteDataTableView> {
                 InfiniteDataView.DYNAMIC_VIEW, new PersonDataSource(personService));
 
         initWidget(uiBinder.createAndBindUi(this));
-    }
-
-    @Override
-    protected void onAttach() {
-        super.onAttach();
-
-        table.getTableTitle().setText("Infinite Table");
-
-        table.clearRowsAndCategories(true);
-
-        loadCategories();
 
         // Add an image profile on each category rows
         table.addColumn(new WidgetColumn<Person, MaterialImage>() {
@@ -137,13 +126,17 @@ public String getValue(Person object) {
             updateSelectedRows(table.getSelectedRowModels(false).size());
             GWT.log("Selected["+event.isSelected()+"]: " + event.getModels().size() + " models");
         });
+    }
 
-        if(!table.isUseCategories()) {
-            // Since we aren't using categories for this table
-            // we will forcefully invoke a table refresh that
-            // sends a request for data.
-            table.getView().refresh();
-        }
+    @Override
+    protected void onAttach() {
+        super.onAttach();
+
+        table.getTableTitle().setText("Infinite Table");
+
+        table.clearRowsAndCategories(true);
+
+        loadCategories();
     }
 
     protected void loadCategories() {

src/main/java/gwt/material/design/demo/client/application/datatable/paged/PagedDataTableView.java

@@ -66,16 +66,7 @@ interface Binder extends UiBinder<Widget, PagedDataTableView> {
     @Inject
     PagedDataTableView(Binder uiBinder) {
         initWidget(uiBinder.createAndBindUi(this));
-    }
-
-    @Override
-    protected void onAttach() {
-        super.onAttach();
-
-        loadDataTable();
-    }
 
-    protected void loadDataTable() {
         // Generate 20 categories
         int rowIndex = 1;
         List<Person> people = new ArrayList<>();

src/main/java/gwt/material/design/demo/client/application/datatable/standard/StandardDataTableView.java

@@ -83,16 +83,7 @@ protected void render(TableSubHeader subheader) {
     @Inject
     StandardDataTableView(Binder uiBinder) {
         initWidget(uiBinder.createAndBindUi(this));
-    }
-
-    @Override
-    protected void onAttach() {
-        super.onAttach();
-
-        loadDataTable();
-    }
 
-    protected void loadDataTable() {
         generatePeople();
 
         // Populate the ComboBox value
@@ -114,9 +105,7 @@ protected void loadDataTable() {
         // We will define our own person row factory to generate the
         // category name. This can be used to generate your own
         // RowComponent's too, if custom functionality is required.
-        table.setRowFactory(new
-
-                PersonRowFactory());
+        table.setRowFactory(new PersonRowFactory());
 
         // If we want to generate all our categories using CustomCategoryComponent
         // We can define our own CategoryComponentFactory. There we can define our
@@ -128,9 +117,7 @@ protected void loadDataTable() {
         // methods to create elements the way you would like.
         table.setRenderer(new CustomRenderer<>());
 
-        table.addColumn(new WidgetColumn<Person, MaterialImage>()
-
-        {
+        table.addColumn(new WidgetColumn<Person, MaterialImage>() {
             @Override
             public MaterialImage getValue(Person object) {
                 MaterialImage profile = new MaterialImage();
@@ -147,9 +134,7 @@ public MaterialImage getValue(Person object) {
 
         // Now we will add our tables columns.
         // There are a number of methods that can provide custom column configurations.
-        table.addColumn(new TextColumn<Person>()
-
-        {
+        table.addColumn(new TextColumn<Person>() {
             @Override
             public Comparator<? super RowComponent<Person>> sortComparator() {
                 return (o1, o2) -> o1.getData().getFirstName().compareToIgnoreCase(o2.getData().getFirstName());
@@ -161,9 +146,7 @@ public String getValue(Person object) {
             }
         }, "First Name");
 
-        table.addColumn(new TextColumn<Person>()
-
-        {
+        table.addColumn(new TextColumn<Person>() {
             @Override
             public Comparator<? super RowComponent<Person>> sortComparator() {
                 return (o1, o2) -> o1.getData().getLastName().compareToIgnoreCase(o2.getData().getLastName());
@@ -175,9 +158,7 @@ public String getValue(Person object) {
             }
         }, "Last Name");
 
-        table.addColumn(new TextColumn<Person>()
-
-        {
+        table.addColumn(new TextColumn<Person>() {
             @Override
             public Comparator<? super RowComponent<Person>> sortComparator() {
                 return (o1, o2) -> o1.getData().getEmail().compareToIgnoreCase(o2.getData().getEmail());
@@ -189,9 +170,7 @@ public String getValue(Person object) {
             }
         }, "Email");
 
-        table.addColumn(new TextColumn<Person>()
-
-        {
+        table.addColumn(new TextColumn<Person>() {
             @Override
             public boolean numeric() {
                 return true;
@@ -213,10 +192,7 @@ public String getValue(Person object) {
             }
         }, "Phone");
 
-        table.addColumn(new WidgetColumn<Person, MaterialComboBox>()
-
-        {
-
+        table.addColumn(new WidgetColumn<Person, MaterialComboBox>() {
             @Override
             public MaterialComboBox getValue(Person object) {
                 MaterialComboBox<String> comboBox = new MaterialComboBox<>();
@@ -231,9 +207,7 @@ public MaterialComboBox getValue(Person object) {
 
         // Example of a widget column!
         // You can add any handler to the column cells widget.
-        table.addColumn(new WidgetColumn<Person, MaterialBadge>()
-
-        {
+        table.addColumn(new WidgetColumn<Person, MaterialBadge>() {
             @Override
             public TextAlign textAlign() {
                 return TextAlign.CENTER;