Allow to change the default zone

src/lib/y2firewall/dialogs/change_zone.rb

@@ -50,6 +50,11 @@ def contents
 
     private
 
+      # @return [Array<Yast::Term>] List of buttons to display
+      def buttons
+        [ok_button, cancel_button]
+      end
+
       # Returns a combobox to select the zone
       #
       # @note The widget is 'memoized'.

src/lib/y2firewall/widgets/change_zone_button.rb

@@ -39,12 +39,12 @@ def initialize(interface)
         @interface = interface
       end
 
-      # @see seeAbstractWidget
+      # @macro seeAbstractWidget
       def label
         _("Change Zone")
       end
 
-      # @see seeAbstractWidget
+      # @macro seeAbstractWidget
       def handle
         return nil unless interface
         result = Dialogs::ChangeZone.run(interface)

src/lib/y2firewall/widgets/default_zone_button.rb

@@ -0,0 +1,83 @@
+# encoding: utf-8
+
+# Copyright (c) [2018] SUSE LLC
+#
+# All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of version 2 of the GNU General Public License as published
+# by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, contact SUSE LLC.
+#
+# To contact SUSE LLC about this file by physical or electronic mail, you may
+# find current contact information at www.suse.com.
+
+require "cwm"
+require "y2firewall/firewalld"
+
+module Y2Firewall
+  module Widgets
+    # This button sets a zone as the default one
+    class DefaultZoneButton < CWM::PushButton
+      # @!attribute [r] zone
+      #   @return [Y2Firewall::Firewalld::Zone] Zone to set as 'default'
+      attr_reader :zone
+
+      # Constructor
+      #
+      # @param zone [Y2Firewall::Firewalld::Zone] Zone to set as 'default'
+      def initialize(zone)
+        textdomain "firewall"
+        @zone = zone
+      end
+
+      # @macro seeAbstractWidget
+      def label
+        _("Set As Default")
+      end
+
+      # Sets the zone to act on
+      #
+      # @note If the given zone is the default one then the button is disabled.
+      #
+      # @param zone [Y2Firewall::Firewalld::Zone] Zone to set as 'default'
+      def zone=(zone)
+        @zone = zone
+        enable_or_disable
+      end
+
+      # @macro seeAbstractWidget
+      def handle
+        firewall.default_zone = zone.name
+        :redraw
+      end
+
+    private
+
+      # Enables or disables the button depending whether the zone is the default one or not
+      def enable_or_disable
+        if firewall.default_zone == zone.name
+          disable
+        else
+          enable
+        end
+      end
+
+      # Return the current `Y2Firewall::Firewalld` instance
+      #
+      # This is just a convenience method.
+      #
+      # @return [Y2Firewall::Firewalld]
+      def firewall
+        Y2Firewall::Firewalld.instance
+      end
+    end
+  end
+end

src/lib/y2firewall/widgets/interfaces_table.rb

@@ -87,10 +87,24 @@ def handle(event)
         nil
       end
 
+      # Returns the selected interface
+      #
+      # @return [Y2Firewall::Firewall::Interface] Interface
       def selected_interface
         interfaces.find { |i| i.id == value }
       end
 
+      # @macro seeAbstractMethod
+      def help
+        _(
+          "<p>Assign your network devices into firewall zones by selecting the device\n" \
+          "in the table and clicking <b>Change Zone</b>.</p>\n\n" \
+          "<p>If you assign an interface to the <b>default</b> zone, the device\n" \
+          "will be assigned to the firewall's default zone. Visit the <b>Zones</b>\n" \
+          "section to find out (and eventually change) which zone is the default one.</p>"
+        )
+      end
+
     private
 
       # @return [Y2Firewalld::Widgets::ChangeZoneButton] Button to change the assigned zone

src/lib/y2firewall/widgets/pages/zones.rb

@@ -23,6 +23,7 @@
 require "cwm/page"
 require "y2firewall/firewalld"
 require "y2firewall/widgets/zones_table"
+require "y2firewall/widgets/default_zone_button"
 
 module Y2Firewall
   module Widgets
@@ -47,12 +48,17 @@ def contents
           return @contents if @contents
           @contents = VBox(
             Left(Heading(_("Zones"))),
-            ZonesTable.new(firewall.zones)
+            ZonesTable.new(firewall.zones, default_zone_button),
+            firewall.zones.empty? ? Empty() : default_zone_button
           )
         end
 
       private
 
+        def default_zone_button
+          @default_zone_button ||= DefaultZoneButton.new(firewall.zones.first)
+        end
+
         def firewall
           Y2Firewall::Firewalld.instance
         end

src/lib/y2firewall/widgets/zones_table.rb

@@ -32,22 +32,74 @@ class ZonesTable < ::CWM::Table
       # Constructor
       #
       # @param zones [Array<Y2Firewall::Firewalld::Zone>] Zones
-      def initialize(zones)
+      # @param default_zone_button [Y2Firewall::Widgets::DefaultZoneButton] Button to change
+      #   the default zone
+      def initialize(zones, default_zone_button)
         textdomain "firewall"
         @zones = zones
+        @default_zone_button = default_zone_button
+      end
+
+      # @macro seeAbstractWidget
+      def opt
+        [:notify, :immediate]
+      end
+
+      # @macro seeAbstractWidget
+      def init
+        zone = Y2Firewall::UIState.instance.row_id
+        self.value = zone if zone && zones.map(&:name).include?(zone.to_s)
+        default_zone_button.zone = selected_zone
       end
 
       # @see CWM::Table#header
       def header
         [
           _("Name"),
-          _("Interfaces")
+          _("Interfaces"),
+          _("Default")
         ]
       end
 
       # @see CWM::Table#items
       def items
-        zones.map { |z| [z.name.to_sym, z.name, z.interfaces.join(", ")] }
+        zones.map do |zone|
+          [
+            zone.name.to_sym,
+            zone.name,
+            zone.interfaces.join(", "),
+            zone.name == firewall.default_zone ? Yast::UI.Glyph(:CheckMark) : ""
+          ]
+        end
+      end
+
+      # @macro seeAbstractWidget
+      def handle(event)
+        return nil unless my_event?(event) && event["EventReason"] == "SelectionChanged"
+        UIState.instance.select_row(value)
+        default_zone_button.zone = selected_zone
+        nil
+      end
+
+      # Returns the selected interface
+      #
+      # @return [Y2Firewall::Firewall::Interface] Interface
+      def selected_zone
+        zones.find { |z| z.name == value.to_s }
+      end
+
+    private
+
+      # @return [Y2Firewalld::Widgets::DefaultZoneButton] Button to set a zone as 'default'
+      attr_reader :default_zone_button
+
+      # Return the current `Y2Firewall::Firewalld` instance
+      #
+      # This is just a convenience method.
+      #
+      # @return [Y2Firewall::Firewalld]
+      def firewall
+        Y2Firewall::Firewalld.instance
       end
     end
   end

test/lib/y2firewall/widgets/default_zone_button_test.rb

@@ -0,0 +1,85 @@
+#!/usr/bin/env rspec
+# encoding: utf-8
+
+# Copyright (c) [2018] SUSE LLC
+#
+# All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of version 2 of the GNU General Public License as published
+# by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, contact SUSE LLC.
+#
+# To contact SUSE LLC about this file by physical or electronic mail, you may
+# find current contact information at www.suse.com.
+
+require_relative "../../../test_helper"
+
+require "cwm/rspec"
+require "y2firewall/widgets/default_zone_button"
+
+describe Y2Firewall::Widgets::DefaultZoneButton do
+  include_examples "CWM::PushButton"
+
+  subject(:widget) { described_class.new(zone) }
+
+  let(:zone) do
+    instance_double(
+      Y2Firewall::Firewalld::Zone, name: "public", interfaces: [], remove_interface: nil
+    )
+  end
+
+  describe "#zone=" do
+    before do
+      allow(Y2Firewall::Firewalld.instance).to receive(:default_zone).and_return(zone.name)
+    end
+
+    let(:other_zone) do
+      instance_double(Y2Firewall::Firewalld::Zone, name: "dmz")
+    end
+
+    it "sets the given zone as the one to act on" do
+      expect { widget.zone = other_zone }.to change { widget.zone }.to other_zone
+    end
+
+    context "when the given zone is not the default one" do
+      let(:default_zone) { other_zone }
+
+      it "enables the button" do
+        expect(widget).to receive(:enable)
+        widget.zone = other_zone
+      end
+    end
+
+    context "when the given zone is the default one" do
+      it "disables the button" do
+        expect(widget).to receive(:disable)
+        widget.zone = zone
+      end
+    end
+  end
+
+  describe "#handle" do
+    before do
+      allow(Y2Firewall::Firewalld.instance).to receive(:default_zone=)
+    end
+
+    it "sets the current zone as the default one" do
+      expect(Y2Firewall::Firewalld.instance).to receive(:default_zone=).with(zone.name)
+      widget.handle
+    end
+
+    it "returns :redraw in order to redraw the interface" do
+      expect(widget.handle).to eq(:redraw)
+    end
+  end
+
+  describe "#zone"
+end

test/lib/y2firewall/widgets/zones_table_test.rb

@@ -22,10 +22,38 @@
 require_relative "../../../test_helper.rb"
 require "cwm/rspec"
 require "y2firewall/widgets/zones_table"
+require "y2firewall/widgets/default_zone_button"
+require "y2firewall/firewalld/interface"
 
 describe Y2Firewall::Widgets::ZonesTable do
-  let(:z1) { double("fake zone", name: "zoe", interfaces: []) }
-  subject { described_class.new([z1]) }
+  subject(:widget) { described_class.new([public_zone, dmz_zone], default_zone_button) }
+
+  let(:default_zone_button) do
+    instance_double(Y2Firewall::Widgets::DefaultZoneButton).as_null_object
+  end
+
+  let(:public_zone) do
+    instance_double(Y2Firewall::Firewalld::Zone, name: "public", interfaces: ["eth0", "eth1"])
+  end
+
+  let(:dmz_zone) do
+    instance_double(Y2Firewall::Firewalld::Zone, name: "dmz", interfaces: [])
+  end
+
+  before do
+    allow(Y2Firewall::Firewalld.instance).to receive(:default_zone).and_return(public_zone.name)
+  end
 
   include_examples "CWM::Table"
+
+  describe "#items" do
+    it "returns the list of zones" do
+      expect(widget.items).to eq(
+        [
+          [:public, "public", "eth0, eth1", Yast::UI.Glyph(:CheckMark)],
+          [:dmz, "dmz", "", ""]
+        ]
+      )
+    end
+  end
 end