add delete button

src/lib/cfa/chrony_conf.rb

@@ -64,6 +64,17 @@ def modify_pool(original_address, new_address, options)
       data.add(key, value, placer)
     end
 
+    def delete_pool(address)
+      key = "pool[]"
+      matcher = Matcher.new do |k, v|
+        k == key &&
+        v == address ||
+        ( v.respond_to?(:value) && v.value = address )
+      end
+
+      data.delete(matcher)
+    end
+
     def default_pool_options
       { "iburst" => nil }
     end

src/lib/y2ntp_client/dialog/main.rb

@@ -36,8 +36,12 @@ def contents
             table,
             HSpacing(0.2),
             VBox(
+              VSpacing(),
               Y2NtpClient::AddPoolButton.new,
+              VSpacing(),
               Y2NtpClient::EditPoolButton.new(table),
+              VSpacing(),
+              Y2NtpClient::DeletePoolButton.new(table),
               VStretch()
             )
           )

src/lib/y2ntp_client/widgets.rb

@@ -262,4 +262,26 @@ def handle
       @table.handle
     end
   end
+
+  class DeletePoolButton < CWM::PushButton
+    def initialize(table)
+      textdomain "ntp-client"
+
+      @table = table
+    end
+
+    def label
+      _("&Delete")
+    end
+
+    def handle
+      address = @table.value
+      if address
+        Yast::Popup.Error(_("No table item is selected"))
+        return nil
+      end
+
+      Yast::NtpClient.ntp_conf.delete_pool(address)
+    end
+  end
 end