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The new API at gems/include/dialog/ aids the creation of simple GUI applications based on the menu-view widget renderer. Its use is illustrated by the simple test application at src/test/dialog/ that is accompanied with the dialog.run script. Issue #5008
111 lines
2.6 KiB
C++
111 lines
2.6 KiB
C++
/*
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* \brief Wrapper around 'Sandboxed_runtime' for simple applications
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* \author Norman Feske
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* \date 2023-03-24
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*/
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/*
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* Copyright (C) 2023 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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#ifndef _INCLUDE__DIALOG__RUNTIME_H_
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#define _INCLUDE__DIALOG__RUNTIME_H_
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#include <dialog/sandboxed_runtime.h>
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#include <os/buffered_xml.h>
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namespace Dialog { struct Runtime; }
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class Dialog::Runtime : private Sandbox::State_handler
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{
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private:
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Env &_env;
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Allocator &_alloc;
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Sandbox _sandbox { _env, *this };
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Sandboxed_runtime _runtime { _env, _alloc, _sandbox };
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void _generate_sandbox_config(Xml_generator &xml) const
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{
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xml.node("report", [&] () {
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xml.attribute("child_ram", "yes");
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xml.attribute("child_caps", "yes");
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xml.attribute("delay_ms", 20*1000);
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});
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xml.node("parent-provides", [&] () {
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auto service_node = [&] (char const *name) {
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xml.node("service", [&] () {
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xml.attribute("name", name); }); };
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service_node("ROM");
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service_node("CPU");
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service_node("PD");
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service_node("LOG");
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service_node("Gui");
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service_node("Timer");
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service_node("Report");
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service_node("File_system");
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});
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_runtime.gen_start_nodes(xml);
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}
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void _update_sandbox_config()
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{
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Buffered_xml const config { _alloc, "config", [&] (Xml_generator &xml) {
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_generate_sandbox_config(xml); } };
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config.with_xml_node([&] (Xml_node const &config) {
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_sandbox.apply_config(config); });
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}
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/**
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* Sandbox::State_handler
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*/
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void handle_sandbox_state() override
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{
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/* obtain current sandbox state */
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Buffered_xml state(_alloc, "state", [&] (Xml_generator &xml) {
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_sandbox.generate_state_report(xml); });
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bool reconfiguration_needed = false;
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state.with_xml_node([&] (Xml_node state) {
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if (_runtime.apply_sandbox_state(state))
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reconfiguration_needed = true; });
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if (reconfiguration_needed)
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_update_sandbox_config();
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}
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public:
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Runtime(Env &env, Allocator &alloc) : _env(env), _alloc(alloc) { }
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struct View : Sandboxed_runtime::View
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{
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View(Runtime &runtime, Top_level_dialog &dialog)
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:
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Sandboxed_runtime::View(runtime._runtime, dialog)
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{
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runtime._update_sandbox_config();
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}
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};
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template <typename T>
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struct Event_handler : Sandboxed_runtime::Event_handler<T>
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{
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Event_handler(Runtime &runtime, T &obj, void (T::*member)(Event const &))
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: Sandboxed_runtime::Event_handler<T>(runtime._runtime, obj, member) { }
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};
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};
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#endif /* _INCLUDE__DIALOG__RUNTIME_H_ */
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