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--- vaadin:code_snippets [2018/02/12 06:51]
admin created
+++ vaadin:code_snippets [2018/02/12 22:29]
admin
@@ Line 14: / Line 14: @@
 <file java>
+book.getRowDefinition().getColumnDefinition("CHECK").setSortable(false)
 book.getRowDefinition().getColumnDefinition("CHECK")
     .setLabel("<input type='checkbox' id='checkboxSelectAll' onclick=\"selectAllListener(this.checked)\" " +
@@ Line 28: / Line 29: @@
         System.out.println("Pressed!");
     }
+});
+</file>
+==== Checkbox in Grid Header ====
+If you want to show a checkbox in the header of a Grid:
+{{:vaadin:grid_checkbox.png?nolink|}}
+use following code:
+<file java>
+CheckBox cbx = new CheckBox();
+cbx.addValueChangeListener(new ValueChangeListener<Boolean>()
+{
+    @Override
+    public void valueChange(ValueChangeEvent<Boolean> event)
+    {
+        System.out.println("Pressed!");
+    }
+});
+UIFactoryManager.getFactory().invokeLater(() ->
+{
+    // Cast the resource to a Grid.
+    ((Grid)((VaadinGrid)navLoggings.getUIResource()).getResource())
+        // Get the first (automatically added) row.
+        .getHeaderRow(0)
+        // Get the cell for the column we want.
+        .getCell("CHECK")
+        // Add the component.
+        .setComponent(cbx);
 });
 </file>