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livetrax/libs/gtkmm2ext/actions.cc

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/*
Copyright (C) 2005 Paul Davis
This program 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 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <cstring>
#include <vector>
#include <string>
#include <list>
#include <stack>
#include <stdint.h>
#include <boost/shared_ptr.hpp>
#include <gtk/gtkaccelmap.h>
#include <gtk/gtkuimanager.h>
#include <gtk/gtkactiongroup.h>
#include <gtkmm.h>
#include <gtkmm/accelmap.h>
#include <gtkmm/uimanager.h>
#include <glibmm/miscutils.h>
#include "pbd/error.h"
#include "gtkmm2ext/actions.h"
#include "gtkmm2ext/utils.h"
#include "pbd/i18n.h"
using namespace std;
using namespace Gtk;
using namespace Glib;
using namespace sigc;
using namespace PBD;
using namespace Gtkmm2ext;
RefPtr<UIManager> ActionManager::ui_manager;
string ActionManager::unbound_string = "--";
struct ActionState {
GtkAction* action;
bool sensitive;
ActionState (GtkAction* a, bool s) : action (a), sensitive (s) {}
};
typedef std::vector<ActionState> ActionStates;
static ActionStates action_states_to_restore;
static bool actions_disabled = false;
void
ActionManager::save_action_states ()
{
/* the C++ API for functions used here appears to be broken in
gtkmm2.6, so we fall back to the C level.
*/
GList* list = gtk_ui_manager_get_action_groups (ActionManager::ui_manager->gobj());
GList* node;
GList* acts;
for (node = list; node; node = g_list_next (node)) {
GtkActionGroup* group = (GtkActionGroup*) node->data;
for (acts = gtk_action_group_list_actions (group); acts; acts = g_list_next (acts)) {
GtkAction* action = (GtkAction*) acts->data;
action_states_to_restore.push_back (ActionState (action, gtk_action_get_sensitive (action)));
}
}
}
void
ActionManager::enable_active_actions ()
{
if (!actions_disabled) {
return ;
}
for (ActionStates::iterator i = action_states_to_restore.begin(); i != action_states_to_restore.end(); ++i) {
if ((*i).action && (*i).sensitive) {
gtk_action_set_sensitive ((*i).action, true);
}
}
action_states_to_restore.clear ();
actions_disabled = false;
}
void
ActionManager::disable_active_actions ()
{
if (actions_disabled == true ) {
return ;
}
// save all action's states to action_states_to_restore
save_action_states ();
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// set all action's states disabled
for (ActionStates::iterator i = action_states_to_restore.begin(); i != action_states_to_restore.end(); ++i) {
if ((*i).sensitive) {
gtk_action_set_sensitive ((*i).action, false);
}
}
actions_disabled = true;
}
Widget*
ActionManager::get_widget (const char * name)
{
return ui_manager->get_widget (name);
}
RefPtr<Action>
ActionManager::get_action (const char* path)
{
if (!path) {
return RefPtr<Action>();
}
/* Skip <Actions>/ in path */
int len = strlen (path);
if (len < 3) {
/* shortest possible path: "a/b" */
return RefPtr<Action>();
}
if (len > 10 && !strncmp (path, "<Actions>/", 10 )) {
path = path+10;
} else if (path[0] == '/') {
path++;
}
vector<char> copy(len+1);
strcpy (&copy[0], path);
char* slash = strchr (&copy[0], '/');
if (!slash) {
return RefPtr<Action> ();
}
*slash = '\0';
return get_action (&copy[0], ++slash);
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}
RefPtr<Action>
ActionManager::get_action (const char* group_name, const char* action_name)
{
/* the C++ API for functions used here appears to be broken in
gtkmm2.6, so we fall back to the C level.
*/
if (! ui_manager) {
return RefPtr<Action> ();
}
GList* list = gtk_ui_manager_get_action_groups (ui_manager->gobj());
GList* node;
RefPtr<Action> act;
for (node = list; node; node = g_list_next (node)) {
GtkActionGroup* _ag = (GtkActionGroup*) node->data;
if (strcmp (group_name, gtk_action_group_get_name (_ag)) == 0) {
GtkAction* _act;
if ((_act = gtk_action_group_get_action (_ag, action_name)) != 0) {
act = Glib::wrap (_act, true);
break;
}
break;
}
}
return act;
}
void
ActionManager::set_sensitive (vector<RefPtr<Action> >& actions, bool state)
{
// if actions weren't disabled
if (!actions_disabled) {
for (vector<RefPtr<Action> >::iterator i = actions.begin(); i != actions.end(); ++i) {
(*i)->set_sensitive (state);
}
}
else {
// actions were disabled
// so we should just set necessary action's states in action_states_to_restore
for (vector<RefPtr<Action> >::iterator i = actions.begin(); i != actions.end(); ++i) {
// go through action_states_to_restore and set state of actions
for (ActionStates::iterator j = action_states_to_restore.begin(); j != action_states_to_restore.end(); ++j) {
// all actions should have their individual name, so we can use it for comparison
if (gtk_action_get_name ((*j).action) == (*i)->get_name ()) {
(*j).sensitive = state;
}
}
}
}
}
void
ActionManager::check_toggleaction (const string& n)
{
set_toggleaction_state (n, true);
}
void
ActionManager::uncheck_toggleaction (const string& n)
{
set_toggleaction_state (n, false);
}
void
ActionManager::set_toggleaction_state (const string& n, bool s)
{
char const * name = n.c_str ();
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const char *last_slash = strrchr (name, '/');
if (last_slash == 0) {
fatal << string_compose ("programmer error: %1 %2", "illegal toggle action name", name) << endmsg;
abort(); /*NOTREACHED*/
return;
}
/* 10 = strlen ("<Actions>/") */
size_t len = last_slash - (name + 10);
char* group_name = new char[len+1];
memcpy (group_name, name + 10, len);
group_name[len] = '\0';
const char* action_name = last_slash + 1;
if (!set_toggleaction_state (group_name, action_name, s)) {
error << string_compose (_("Unknown action name: %1/%2"), group_name, action_name) << endmsg;
}
delete [] group_name;
}
bool
ActionManager::set_toggleaction_state (const char* group_name, const char* action_name, bool s)
{
RefPtr<Action> act = get_action (group_name, action_name);
if (act) {
RefPtr<ToggleAction> tact = RefPtr<ToggleAction>::cast_dynamic(act);
if (tact) {
tact->set_active (s);
return true;
}
}
return false;
}
void
ActionManager::do_action (const char* group, const char*action)
{
Glib::RefPtr<Gtk::Action> act = ActionManager::get_action (group, action);
if (act) {
act->activate ();
}
}
void
ActionManager::set_toggle_action (const char* group, const char*action, bool yn)
{
Glib::RefPtr<Gtk::Action> act = ActionManager::get_action (group, action);
if (act) {
Glib::RefPtr<Gtk::ToggleAction> tact = Glib::RefPtr<ToggleAction>::cast_dynamic (act);
if (tact) {
tact->set_active (yn);
}
}
}