gui_object.cc

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/*
    Copyright (C) 2011 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 <iostream>
#include <sstream>

#include "gui_object.h"
#include "i18n.h"

using std::string;

const string GUIObjectState::xml_node_name (X_("GUIObjectState"));

GUIObjectState::GUIObjectState ()
        : _state (X_("GUIObjectState"))
{

}

XMLNode *
GUIObjectState::get_node (const XMLNode* parent, const string& id)
{
        XMLNodeList const & children = parent->children ();
        for (XMLNodeList::const_iterator i = children.begin(); i != children.end(); ++i) {

                if ((*i)->name() != X_("Object")) {
                        continue;
                }

                XMLProperty* p = (*i)->property (X_("id"));
                if (p && p->value() == id) {
                        return *i;
                }
        }

        return 0;
}

XMLNode *
GUIObjectState::get_or_add_node (XMLNode* parent, const string& id)
{
        XMLNode* child = get_node (parent, id);
        if (!child) {
                child = new XMLNode (X_("Object"));
                child->add_property (X_("id"), id);
                parent->add_child_nocopy (*child);
        }

        return child;
}

XMLNode *
GUIObjectState::get_or_add_node (const string& id)
{
        return get_or_add_node (&_state, id);
}

void
GUIObjectState::remove_node (const std::string& id)
{
        _state.remove_nodes_and_delete(X_("id"), id );
}

string 
GUIObjectState::get_string (const string& id, const string& prop_name, bool* empty)
{
        XMLNode* child = get_node (&_state, id);

        if (!child) {
                if (empty) {
                        *empty = true;
                }
                return string ();
        }

        XMLProperty* p = child->property (prop_name);
        if (!p) {
                if (empty) {
                        *empty = true;
                }
                return string ();
        }

        if (empty) {
                *empty = false;
        }

        return p->value ();
}

XMLNode&
GUIObjectState::get_state () const
{
        return *new XMLNode (_state);
}

int
GUIObjectState::set_state (const XMLNode& node)
{
        if (node.name() != xml_node_name) {
                return -1;
        }

        _state = node;
        return 0;
}

void
GUIObjectState::load (const XMLNode& node)
{
        (void) set_state (node);
}

std::list<string>
GUIObjectState::all_ids () const
{
        std::list<string> ids;
        XMLNodeList const & children = _state.children ();
        for (XMLNodeList::const_iterator i = children.begin(); i != children.end(); ++i) {
                if ((*i)->name() != X_("Object")) {
                        continue;
                }

                XMLProperty* p = (*i)->property (X_("id"));
                if (p) {
                        ids.push_back (p->value ());
                }
        }

        return ids;
}