--- /dev/null
+/* === S Y N F I G ========================================================= */
+/*! \file action_system.h
+** \brief Template Header
+**
+** $Id$
+**
+** \legal
+** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**
+** This package is free software; you can redistribute it and/or
+** modify it under the terms of the GNU General Public License as
+** published by the Free Software Foundation; either version 2 of
+** the License, or (at your option) any later version.
+**
+** This package 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.
+** \endlegal
+*/
+/* ========================================================================= */
+
+/* === S T A R T =========================================================== */
+
+#ifndef __SYNFIGAPP_ACTIONSYSTEM_H
+#define __SYNFIGAPP_ACTIONSYSTEM_H
+
+/* === H E A D E R S ======================================================= */
+
+#include "action.h"
+#include <sigc++/signal.h>
+#include <sigc++/object.h>
+#include <ETL/handle>
+#include <synfig/canvas.h>
+#include "uimanager.h"
+
+/* === M A C R O S ========================================================= */
+
+/* === T Y P E D E F S ===================================================== */
+
+/* === C L A S S E S & S T R U C T S ======================================= */
+
+namespace synfigapp {
+
+class CanvasInterface;
+
+namespace Action {
+
+
+
+
+
+class System;
+
+//! Passive action grouping class
+class PassiveGrouper
+{
+ etl::loose_handle<System> instance_;
+ synfig::String name_;
+ bool redraw_requested_;
+ int depth_;
+ etl::handle<CanvasInterface> canvas_interface_;
+public:
+
+ PassiveGrouper(etl::loose_handle<System> instance_,synfig::String name_);
+
+ ~PassiveGrouper();
+
+ const synfig::String &get_name()const { return name_; }
+
+ void set_name(const synfig::String &x) { name_=x; }
+
+ etl::loose_handle<System> get_instance() { return instance_; }
+
+ void request_redraw(etl::handle<CanvasInterface>);
+
+ void cancel();
+
+ void inc_depth() { depth_++; }
+
+ void dec_depth() { depth_--; }
+
+ const int &get_depth()const { return depth_; }
+}; // END of class Action::PassiveGrouper
+
+typedef std::list< etl::handle<Action::Undoable> > Stack;
+
+class System : public etl::shared_object, public sigc::trackable
+{
+ friend class PassiveGrouper;
+
+ /*
+ -- ** -- P U B L I C T Y P E S ---------------------------------------------
+ */
+
+public:
+
+ /*
+ -- ** -- P U B L I C D A T A ------------------------------------------------
+ */
+
+public:
+
+ /*
+ -- ** -- P R I V A T E D A T A ---------------------------------------------
+ */
+
+private:
+
+ Stack undo_action_stack_;
+ Stack redo_action_stack_;
+
+ etl::handle<Action::Base> most_recent_action_;
+
+ std::list<PassiveGrouper*> group_stack_;
+
+ sigc::signal<void,bool> signal_undo_status_;
+ sigc::signal<void,bool> signal_redo_status_;
+ sigc::signal<void,etl::handle<Action::Undoable> > signal_new_action_;
+ sigc::signal<void> signal_undo_stack_cleared_;
+ sigc::signal<void> signal_redo_stack_cleared_;
+ sigc::signal<void> signal_undo_;
+ sigc::signal<void> signal_redo_;
+ sigc::signal<void,etl::handle<Action::Undoable> > signal_action_status_changed_;
+
+ mutable sigc::signal<void,bool> signal_unsaved_status_changed_;
+
+ //! If this is non-zero, then the changes have not yet been saved.
+ mutable int action_count_;
+
+ etl::handle<UIInterface> ui_interface_;
+
+ bool clear_redo_stack_on_new_action_;
+
+ /*
+ -- ** -- P R I V A T E M E T H O D S ---------------------------------------
+ */
+
+private:
+
+ bool undo_(etl::handle<UIInterface> uim);
+ bool redo_(etl::handle<UIInterface> uim);
+
+ /*
+ -- ** -- S I G N A L T E R M I N A L S -------------------------------------
+ */
+
+private:
+
+ /*
+ -- ** -- P U B L I C M E T H O D S -----------------------------------------
+ */
+
+public:
+
+ System();
+ ~System();
+
+ /*
+ template <typename T> bool
+ perform_action(T x)
+ {
+ etl::handle<Action::Base> action((Action::Base*)new T(x));
+ return perform_action(action);
+ }
+ */
+
+ const etl::handle<Action::Base>& get_most_recent_action() { return most_recent_action_; }
+
+ bool get_clear_redo_stack_on_new_action()const { return clear_redo_stack_on_new_action_; }
+
+ void set_clear_redo_stack_on_new_action(bool x) { clear_redo_stack_on_new_action_=x; }
+
+ bool perform_action(etl::handle<Action::Base> action);
+
+ bool set_action_status(etl::handle<Action::Undoable> action, bool x);
+
+ const Stack &undo_action_stack()const { return undo_action_stack_; }
+
+ const Stack &redo_action_stack()const { return redo_action_stack_; }
+
+ //! Undoes the last action
+ bool undo();
+
+ //! Redoes the last undone action
+ bool redo();
+
+ //! Clears the undo stack.
+ void clear_undo_stack();
+
+ //! Clears the redo stack.
+ void clear_redo_stack();
+
+ //! Increments the action counter
+ /*! \note You should not have to call this under normal circumstances.
+ ** \see dec_action_count(), reset_action_count(), get_action_count() */
+ void inc_action_count()const;
+
+ //! Decrements the action counter
+ /*! \note You should not have to call this under normal circumstances.
+ ** \see inc_action_count(), reset_action_count(), get_action_count() */
+ void dec_action_count()const;
+
+ //! Resets the action counter
+ /*! \note You should not have to call this under normal circumstances.
+ ** \see inc_action_count(), dec_action_count(), get_action_count() */
+ void reset_action_count()const;
+
+ //! Returns the number of actions performed since last save.
+ /*! \see inc_action_count(), dec_action_count(), reset_action_count() */
+ int get_action_count()const { return action_count_; }
+
+ void set_ui_interface(const etl::handle<UIInterface> &uim) { assert(uim); ui_interface_=uim; }
+ void unset_ui_interface() { ui_interface_=new DefaultUIInterface(); }
+ const etl::handle<UIInterface> &get_ui_interface() { return ui_interface_; }
+
+ /*
+ -- ** -- S I G N A L I N T E R F A C E S -----------------------------------
+ */
+
+public:
+
+ sigc::signal<void,bool>& signal_unsaved_status_changed() { return signal_unsaved_status_changed_; }
+
+ sigc::signal<void,bool>& signal_undo_status() { return signal_undo_status_; }
+
+ sigc::signal<void,bool>& signal_redo_status() { return signal_redo_status_; }
+
+ sigc::signal<void>& signal_undo_stack_cleared() { return signal_undo_stack_cleared_; }
+
+ sigc::signal<void>& signal_redo_stack_cleared() { return signal_redo_stack_cleared_; }
+
+ sigc::signal<void>& signal_undo() { return signal_undo_; }
+
+ sigc::signal<void>& signal_redo() { return signal_redo_; }
+
+ //! Called whenever an undoable action is processed and added to the stack.
+ sigc::signal<void,etl::handle<Action::Undoable> >& signal_new_action() { return signal_new_action_; }
+
+ sigc::signal<void,etl::handle<Action::Undoable> >& signal_action_status_changed() { return signal_action_status_changed_; }
+
+}; // END of class Action::System
+
+
+}; // END of namespace synfigapp::Action
+}; // END of namespace synfigapp
+
+/* === E N D =============================================================== */
+
+#endif
projects / synfig.git / blobdiff