SystemMenu: Move SystemDialog into SystemMenu and remove INI config

I probably would've done INI config removal in another commit, but it
fit well here because I didn't want to pledge wpath for SystemMenu if I
didn't need to.

Frankly, that's something that I think should be done: allow ConfigFile
to be used read-only.

4 files changed, 175 insertions, 2 deletions

diff --git a/Applications/SystemMenu/Makefile b/Applications/SystemMenu/Makefile
index 0132cdd40c..58a9369e16 100644
--- a/Applications/SystemMenu/Makefile
+++ b/Applications/SystemMenu/Makefile
@@ -1,5 +1,6 @@
 OBJS = \
-    main.o
+    main.o \
+	PowerDialog.o
 
 PROGRAM = SystemMenu
 
diff --git a/Applications/SystemMenu/PowerDialog.cpp b/Applications/SystemMenu/PowerDialog.cpp
new file mode 100644
index 0000000000..1d28de0d58
--- /dev/null
+++ b/Applications/SystemMenu/PowerDialog.cpp
@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2020, the SerenityOS developers.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <AK/String.h>
+#include <AK/Vector.h>
+#include <LibGUI/BoxLayout.h>
+#include <LibGUI/Button.h>
+#include <LibGUI/Desktop.h>
+#include <LibGUI/Label.h>
+#include <LibGUI/RadioButton.h>
+#include <LibGUI/Widget.h>
+#include <LibGfx/Font.h>
+
+#include "PowerDialog.h"
+
+struct PowerOption {
+    String title;
+    Vector<char const*> cmd;
+    bool enabled;
+    bool default_action;
+};
+
+static const Vector<PowerOption> options = {
+    { "Shut down", { "/bin/shutdown", "--now", nullptr }, true, true },
+    { "Restart", { "/bin/reboot", nullptr }, true, false },
+    { "Log out", {}, false, false },
+    { "Sleep", {}, false, false },
+};
+
+Vector<char const*> PowerDialog::show()
+{
+    auto rc = PowerDialog::construct()->exec();
+    if (rc < 0)
+        return {};
+
+    return options[rc].cmd;
+}
+
+PowerDialog::PowerDialog(Core::Object* parent)
+    : GUI::Dialog(parent)
+{
+    Gfx::Rect rect({ 0, 0, 180, 180 + ((options.size() - 3) * 16) });
+    rect.center_within(GUI::Desktop::the().rect());
+    set_rect(rect);
+    set_resizable(false);
+    set_title("SerenityOS");
+    set_icon(Gfx::Bitmap::load_from_file("/res/icons/16x16/power.png"));
+
+    auto main = GUI::Widget::construct();
+    set_main_widget(main);
+    main->set_layout(make<GUI::VerticalBoxLayout>());
+    main->layout()->set_margins({ 8, 8, 8, 8 });
+    main->layout()->set_spacing(8);
+    main->set_fill_with_background_color(true);
+
+    auto header = GUI::Label::construct(main.ptr());
+    header->set_text("What would you like to do?");
+    header->set_preferred_size(0, 16);
+    header->set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
+    header->set_font(Gfx::Font::default_bold_font());
+
+    int selected = -1;
+    for (int i = 0; i < options.size(); i++) {
+        auto action = options[i];
+        auto radio = GUI::RadioButton::construct(main);
+        radio->set_enabled(action.enabled);
+        radio->set_text(action.title);
+
+        radio->on_checked = [&selected, i](auto) {
+            selected = i;
+        };
+
+        if (action.default_action) {
+            radio->set_checked(true);
+            selected = i;
+        }
+    }
+
+    auto button_box = GUI::Widget::construct(main.ptr());
+    button_box->set_layout(make<GUI::HorizontalBoxLayout>());
+    button_box->layout()->set_spacing(8);
+
+    auto ok_button = GUI::Button::construct(button_box);
+    ok_button->on_click = [this, &selected](auto&) {
+        done(selected);
+    };
+    ok_button->set_text("OK");
+
+    auto cancel_button = GUI::Button::construct(button_box);
+    cancel_button->on_click = [this](auto&) {
+        done(-1);
+    };
+    cancel_button->set_text("Cancel");
+}
+
+PowerDialog::~PowerDialog()
+{
+}
diff --git a/Applications/SystemMenu/PowerDialog.h b/Applications/SystemMenu/PowerDialog.h
new file mode 100644
index 0000000000..c36e033aa9
--- /dev/null
+++ b/Applications/SystemMenu/PowerDialog.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2020, the SerenityOS developers.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <AK/Vector.h>
+#include <LibCore/Object.h>
+#include <LibGUI/Dialog.h>
+
+class PowerDialog : public GUI::Dialog {
+    C_OBJECT(PowerDialog)
+public:
+    static Vector<char const*> show();
+
+private:
+    PowerDialog(Core::Object* parent = nullptr);
+    ~PowerDialog();
+};
diff --git a/Applications/SystemMenu/main.cpp b/Applications/SystemMenu/main.cpp
index cb2bd7201e..cc9b0cf265 100644
--- a/Applications/SystemMenu/main.cpp
+++ b/Applications/SystemMenu/main.cpp
@@ -40,6 +40,8 @@
 #include <sys/utsname.h>
 #include <unistd.h>
 
+#include "PowerDialog.h"
+
 //#define SYSTEM_MENU_DEBUG
 
 struct AppMetadata {
@@ -88,6 +90,11 @@ int main(int argc, char** argv)
         return 1;
     }
 
+    if (unveil("/etc/PowerOptions.ini", "r")) {
+        perror("unveil");
+        return 1;
+    }
+
     unveil(nullptr, nullptr);
 
     return app.exec();
@@ -193,8 +200,13 @@ NonnullRefPtr<GUI::Menu> build_system_menu()
     }));
     system_menu->add_separator();
     system_menu->add_action(GUI::Action::create("Exit...", [](auto&) {
+        Vector<char const*> command = PowerDialog::show();
+
+        if (command.size() == 0)
+            return;
+
         if (fork() == 0) {
-            execl("/bin/SystemDialog", "/bin/SystemDialog", nullptr);
+            execv(command[0], const_cast<char* const*>(command.data()));
             ASSERT_NOT_REACHED();
         }
     }));