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/*
* Author:
* Gustav Broberg <broberg@kth.se>
* Jon A. Cruz <jon@joncruz.org>
*
* Copyright (c) 2014 Authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include "util/signal-blocker.h"
#include "event-log.h"
#include <glibmm/i18n.h>
#include <boost/shared_ptr.hpp>
#include <boost/make_shared.hpp>
#include "desktop.h"
#include "inkscape.h"
#include "util/ucompose.hpp"
#include "document.h"
namespace
{
class DialogConnection
{
public:
DialogConnection(Gtk::TreeView *event_list_view, Inkscape::EventLog::CallbackMap *callback_connections) :
_event_list_view(event_list_view),
_callback_connections(callback_connections),
_event_list_selection(_event_list_view->get_selection())
{
}
Gtk::TreeView *_event_list_view;
// Map of connections used to temporary block/unblock callbacks in a TreeView
Inkscape::EventLog::CallbackMap *_callback_connections;
Glib::RefPtr<Gtk::TreeSelection> _event_list_selection; /// @todo remove this and use _event_list_view's call
};
class ConnectionMatcher
{
public:
ConnectionMatcher(Gtk::TreeView *view,
Inkscape::EventLog::CallbackMap *callbacks) :
_view(view),
_callbacks(callbacks)
{
}
bool operator() (DialogConnection const &dlg)
{
return (_view == dlg._event_list_view) && (_callbacks == dlg._callback_connections);
}
Gtk::TreeView *_view;
Inkscape::EventLog::CallbackMap *_callbacks;
};
void addBlocker(std::vector<boost::shared_ptr<SignalBlocker> > &blockers, sigc::connection *connection)
{
blockers.push_back(boost::make_shared<SignalBlocker>(connection));
}
} // namespace
namespace Inkscape {
class EventLogPrivate
{
public:
EventLogPrivate() :
_connections()
{
}
bool isConnected() const
{
return !_connections.empty();
}
void addDialogConnection(Gtk::TreeView *event_list_view,
Inkscape::EventLog::CallbackMap *callback_connections,
Glib::RefPtr<Gtk::TreeStore> event_list_store,
Inkscape::EventLog::iterator &curr_event)
{
if (std::find_if(_connections.begin(), _connections.end(), ConnectionMatcher(event_list_view, callback_connections)) != _connections.end()) {
// skipping
}
else
{
DialogConnection dlg(event_list_view, callback_connections);
dlg._event_list_selection->set_mode(Gtk::SELECTION_SINGLE);
{
std::vector<boost::shared_ptr<SignalBlocker> > blockers;
addBlocker(blockers, &(*dlg._callback_connections)[Inkscape::EventLog::CALLB_SELECTION_CHANGE]);
addBlocker(blockers, &(*dlg._callback_connections)[Inkscape::EventLog::CALLB_EXPAND]);
dlg._event_list_view->expand_to_path(event_list_store->get_path(curr_event));
dlg._event_list_selection->select(curr_event);
}
_connections.push_back(dlg);
}
}
void removeDialogConnection(Gtk::TreeView *event_list_view, Inkscape::EventLog::CallbackMap *callback_connections)
{
std::vector<DialogConnection>::iterator it = std::find_if(_connections.begin(), _connections.end(), ConnectionMatcher(event_list_view, callback_connections));
if (it != _connections.end()) {
_connections.erase(it);
}
}
void collapseRow(Gtk::TreeModel::Path const &path)
{
std::vector<boost::shared_ptr<SignalBlocker> > blockers;
for (std::vector<DialogConnection>::iterator it(_connections.begin()); it != _connections.end(); ++it)
{
addBlocker(blockers, &(*it->_callback_connections)[Inkscape::EventLog::CALLB_SELECTION_CHANGE]);
addBlocker(blockers, &(*it->_callback_connections)[Inkscape::EventLog::CALLB_COLLAPSE]);
}
for (std::vector<DialogConnection>::iterator it(_connections.begin()); it != _connections.end(); ++it)
{
it->_event_list_view->collapse_row(path);
}
}
void selectRow(Gtk::TreeModel::Path const &path)
{
std::vector<boost::shared_ptr<SignalBlocker> > blockers;
for (std::vector<DialogConnection>::iterator it(_connections.begin()); it != _connections.end(); ++it)
{
addBlocker(blockers, &(*it->_callback_connections)[Inkscape::EventLog::CALLB_SELECTION_CHANGE]);
addBlocker(blockers, &(*it->_callback_connections)[Inkscape::EventLog::CALLB_EXPAND]);
}
for (std::vector<DialogConnection>::iterator it(_connections.begin()); it != _connections.end(); ++it)
{
it->_event_list_view->expand_to_path(path);
it->_event_list_selection->select(path);
it->_event_list_view->scroll_to_row(path);
}
}
void clearEventList(Glib::RefPtr<Gtk::TreeStore> eventListStore)
{
if (eventListStore) {
std::vector<boost::shared_ptr<SignalBlocker> > blockers;
for (std::vector<DialogConnection>::iterator it(_connections.begin()); it != _connections.end(); ++it)
{
addBlocker(blockers, &(*it->_callback_connections)[Inkscape::EventLog::CALLB_SELECTION_CHANGE]);
addBlocker(blockers, &(*it->_callback_connections)[Inkscape::EventLog::CALLB_EXPAND]);
}
eventListStore->clear();
}
}
std::vector<DialogConnection> _connections;
};
EventLog::EventLog(SPDocument* document) :
UndoStackObserver(),
_priv(new EventLogPrivate()),
_document (document),
_event_list_store (Gtk::TreeStore::create(_columns)),
_curr_event_parent (NULL),
_notifications_blocked (false)
{
// add initial pseudo event
Gtk::TreeRow curr_row = *(_event_list_store->append());
_curr_event = _last_saved = _last_event = curr_row;
curr_row[_columns.description] = _("[Unchanged]");
curr_row[_columns.type] = SP_VERB_FILE_NEW;
}
EventLog::~EventLog() {
// avoid crash by clearing entries here (see bug #1071082)
_priv->clearEventList(_event_list_store);
delete _priv;
_priv = 0;
}
void
EventLog::notifyUndoEvent(Event* log)
{
if ( !_notifications_blocked ) {
// make sure the supplied event matches the next undoable event
g_return_if_fail ( _getUndoEvent() && (*(_getUndoEvent()))[_columns.event] == log );
// if we're on the first child event...
if ( _curr_event->parent() &&
_curr_event == _curr_event->parent()->children().begin() )
{
// ...back up to the parent
_curr_event = _curr_event->parent();
_curr_event_parent = (iterator)NULL;
} else {
// if we're about to leave a branch, collapse it
if ( !_curr_event->children().empty() ) {
_priv->collapseRow(_event_list_store->get_path(_curr_event));
}
--_curr_event;
// if we're entering a branch, move to the end of it
if (!_curr_event->children().empty()) {
_curr_event_parent = _curr_event;
_curr_event = _curr_event->children().end();
--_curr_event;
}
}
checkForVirginity();
// update the view
if (_priv->isConnected()) {
Gtk::TreePath curr_path = _event_list_store->get_path(_curr_event);
_priv->selectRow(curr_path);
}
updateUndoVerbs();
}
}
void
EventLog::notifyRedoEvent(Event* log)
{
if ( !_notifications_blocked ) {
// make sure the supplied event matches the next redoable event
g_return_if_fail ( _getRedoEvent() && (*(_getRedoEvent()))[_columns.event] == log );
// if we're on a parent event...
if ( !_curr_event->children().empty() ) {
// ...move to its first child
_curr_event_parent = _curr_event;
_curr_event = _curr_event->children().begin();
} else {
++_curr_event;
// if we are about to leave a branch...
if ( _curr_event->parent() &&
_curr_event == _curr_event->parent()->children().end() )
{
// ...collapse it
_priv->collapseRow(_event_list_store->get_path(_curr_event->parent()));
// ...and move to the next event at parent level
_curr_event = _curr_event->parent();
_curr_event_parent = (iterator)NULL;
++_curr_event;
}
}
checkForVirginity();
// update the view
if (_priv->isConnected()) {
Gtk::TreePath curr_path = _event_list_store->get_path(_curr_event);
_priv->selectRow(curr_path);
}
updateUndoVerbs();
}
}
void
EventLog::notifyUndoCommitEvent(Event* log)
{
_clearRedo();
const unsigned int event_type = log->type;
Gtk::TreeRow curr_row;
// if the new event is of the same type as the previous then create a new branch
if ( event_type == (*_curr_event)[_columns.type] ) {
if ( !_curr_event_parent ) {
_curr_event_parent = _curr_event;
}
curr_row = *(_event_list_store->append(_curr_event_parent->children()));
(*_curr_event_parent)[_columns.child_count] = _curr_event_parent->children().size() + 1;
} else {
curr_row = *(_event_list_store->append());
curr_row[_columns.child_count] = 1;
_curr_event = _last_event = curr_row;
// collapse if we're leaving a branch
if (_curr_event_parent) {
_priv->collapseRow(_event_list_store->get_path(_curr_event_parent));
}
_curr_event_parent = (iterator)(NULL);
}
_curr_event = _last_event = curr_row;
curr_row[_columns.event] = log;
curr_row[_columns.type] = event_type;
curr_row[_columns.description] = log->description;
checkForVirginity();
// update the view
if (_priv->isConnected()) {
Gtk::TreePath curr_path = _event_list_store->get_path(_curr_event);
_priv->selectRow(curr_path);
}
updateUndoVerbs();
}
void
EventLog::notifyClearUndoEvent()
{
_clearUndo();
updateUndoVerbs();
}
void
EventLog::notifyClearRedoEvent()
{
_clearRedo();
updateUndoVerbs();
}
void EventLog::addDialogConnection(Gtk::TreeView *event_list_view, CallbackMap *callback_connections)
{
_priv->addDialogConnection(event_list_view, callback_connections, _event_list_store, _curr_event);
}
void EventLog::removeDialogConnection(Gtk::TreeView *event_list_view, CallbackMap *callback_connections)
{
_priv->removeDialogConnection(event_list_view, callback_connections);
}
void
EventLog::updateUndoVerbs()
{
if(_document) {
if(_getUndoEvent()) {
Inkscape::Verb::get(SP_VERB_EDIT_UNDO)->sensitive(_document, true);
Inkscape::Verb::get(SP_VERB_EDIT_UNDO)->name(_document, String::ucompose("%1: %2",
Glib::ustring(_("_Undo")),
Glib::ustring((*_getUndoEvent())[_columns.description])));
} else {
Inkscape::Verb::get(SP_VERB_EDIT_UNDO)->name(_document, _("_Undo"));
Inkscape::Verb::get(SP_VERB_EDIT_UNDO)->sensitive(_document, false);
}
if(_getRedoEvent()) {
Inkscape::Verb::get(SP_VERB_EDIT_REDO)->sensitive(_document, true);
Inkscape::Verb::get(SP_VERB_EDIT_REDO)->name(_document, String::ucompose("%1: %2",
Glib::ustring(_("_Redo")),
Glib::ustring((*_getRedoEvent())[_columns.description])));
} else {
Inkscape::Verb::get(SP_VERB_EDIT_REDO)->name(_document, _("_Redo"));
Inkscape::Verb::get(SP_VERB_EDIT_REDO)->sensitive(_document, false);
}
}
}
EventLog::const_iterator
EventLog::_getUndoEvent() const
{
const_iterator undo_event = (const_iterator)NULL;
if( _curr_event != _event_list_store->children().begin() )
undo_event = _curr_event;
return undo_event;
}
EventLog::const_iterator
EventLog::_getRedoEvent() const
{
const_iterator redo_event = (const_iterator)NULL;
if ( _curr_event != _last_event ) {
if ( !_curr_event->children().empty() )
redo_event = _curr_event->children().begin();
else {
redo_event = _curr_event;
++redo_event;
if ( redo_event->parent() &&
redo_event == redo_event->parent()->children().end() ) {
redo_event = redo_event->parent();
++redo_event;
}
}
}
return redo_event;
}
void
EventLog::_clearUndo()
{
// TODO: Implement when needed
}
void
EventLog::_clearRedo()
{
if ( _last_event != _curr_event ) {
_last_event = _curr_event;
if ( !_last_event->children().empty() ) {
_last_event = _last_event->children().begin();
} else {
++_last_event;
}
while ( _last_event != _event_list_store->children().end() ) {
if (_last_event->parent()) {
while ( _last_event != _last_event->parent()->children().end() ) {
_last_event = _event_list_store->erase(_last_event);
}
_last_event = _last_event->parent();
(*_last_event)[_columns.child_count] = _last_event->children().size() + 1;
++_last_event;
} else {
_last_event = _event_list_store->erase(_last_event);
}
}
}
}
/* mark document as untouched if we reach a state where the document was previously saved */
void
EventLog::checkForVirginity() {
g_return_if_fail (_document);
if (_curr_event == _last_saved) {
_document->setModifiedSinceSave(false);
}
}
} // namespace Inkscape
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
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