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/***************************************************************************
 *   Copyright (C) 2003 by S�astien Laot                                 *
 *   slaout@linux62.org                                                    *
 *                                                                         *
 *   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.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.             *
 ***************************************************************************/

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <tqdir.h>
#include <tdelocale.h>
#include <tdemessagebox.h>

#include "basketfactory.h"
#include "global.h"
#include "basket.h"
#include "xmlwork.h"
#include "note.h" // For balanced column width computation
#include "bnpview.h"

/** BasketFactory */

// TODO: Don't create a basket with a name that already exists!

TQString BasketFactory::newFolderName()
{
	TQString folderName;
	TQString fullPath;
	TQDir    dir;

	for (int i = 1; ; ++i) {
		folderName = "basket" + TQString::number(i) + "/";
		fullPath   = Global::basketsFolder() + folderName;
		dir        = TQDir(fullPath);
		if ( ! dir.exists() ) // OK : The folder do not yet exists :
			break;            //  We've found one !
	}

	return folderName;
}

TQString BasketFactory::unpackTemplate(const TQString &templateName)
{
	// Find a name for a new folder and create it:
	TQString folderName = newFolderName();
	TQString fullPath   = Global::basketsFolder() + folderName;
	TQDir dir;
	if (!dir.mkdir(fullPath)) {
		KMessageBox::error(/*parent=*/0, i18n("Sorry, but the folder creation for this new basket has failed."), i18n("Basket Creation Failed"));
		return "";
	}

	// Unpack the template file to that folder:
	// TODO: REALLY unpack (this hand-creation is temporary, or it could be used in case the template can't be found)
	TQFile file(fullPath + "/.basket");
	if (file.open(IO_WriteOnly)) {
		TQTextStream stream(&file);
		stream.setEncoding(TQTextStream::UnicodeUTF8);
		int nbColumns = (templateName == "mindmap" || templateName == "free" ? 0 : templateName.left(1).toInt());
		Basket *currentBasket = Global::bnpView->currentBasket();
		int columnWidth = (currentBasket && nbColumns > 0 ? (currentBasket->visibleWidth() - (nbColumns-1)*Note::RESIZER_WIDTH) / nbColumns : 0);
		stream << TQString( "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>\n"
		                   "<!DOCTYPE basket>\n"
		                   "<basket>\n"
		                   " <properties>\n"
		                   "  <disposition mindMap=\"%1\" columnCount=\"%2\" free=\"%3\" />\n"
		                   " </properties>\n"
		                   " <notes>\n" ).arg( (templateName == "mindmap" ? "true" : "false"),
		                                       TQString::number(nbColumns),
		                                       (templateName == "free" || templateName == "mindmap" ? "true" : "false") );
		if (nbColumns > 0)
			for (int i = 0; i < nbColumns; ++i)
				stream << TQString("  <group width=\"%1\"></group>\n").arg(columnWidth);
		stream << " </notes>\n"
		          "</basket>\n";
		file.close();
		return folderName;
	} else {
		KMessageBox::error(/*parent=*/0, i18n("Sorry, but the template copying for this new basket has failed."), i18n("Basket Creation Failed"));
		return "";
	}
}

void BasketFactory::newBasket(const TQString &icon,
                              const TQString &name,
                              const TQString &backgroundImage,
                              const TQColor  &backgroundColor,
                              const TQColor  &textColor,
                              const TQString &templateName,
                              Basket *parent)
{
	// Unpack the templateName file to a new basket folder:
	TQString folderName = unpackTemplate(templateName);
	if (folderName.isEmpty())
		return;

	// Read the properties, change those that should be customized and save the result:
	TQDomDocument *document  = XMLWork::openFile("basket", Global::basketsFolder() + folderName + "/.basket");
	if (!document) {
		KMessageBox::error(/*parent=*/0, i18n("Sorry, but the template customization for this new basket has failed."), i18n("Basket Creation Failed"));
		return;
	}
	TQDomElement properties  = XMLWork::getElement(document->documentElement(), "properties");

	if (!icon.isEmpty()) {
		TQDomElement iconElement = XMLWork::getElement(properties, "icon");
		if (!iconElement.tagName().isEmpty()) // If there is already an icon, remove it since we will add our own value below
			iconElement.removeChild(iconElement.firstChild());
		XMLWork::addElement(*document, properties, "icon", icon);
	}

	if (!name.isEmpty()) {
		TQDomElement nameElement = XMLWork::getElement(properties, "name");
		if (!nameElement.tagName().isEmpty()) // If there is already a name, remove it since we will add our own value below
			nameElement.removeChild(nameElement.firstChild());
		XMLWork::addElement(*document, properties, "name", name);
	}

	if (backgroundColor.isValid()) {
		TQDomElement appearanceElement = XMLWork::getElement(properties, "appearance");
		if (appearanceElement.tagName().isEmpty()) { // If there is not already an appearance tag, add it since we will access it below
			appearanceElement = document->createElement("appearance");
			properties.appendChild(appearanceElement);
		}
		appearanceElement.setAttribute("backgroundColor", backgroundColor.name());
	}

	if (!backgroundImage.isEmpty()) {
		TQDomElement appearanceElement = XMLWork::getElement(properties, "appearance");
		if (appearanceElement.tagName().isEmpty()) { // If there is not already an appearance tag, add it since we will access it below
			appearanceElement = document->createElement("appearance");
			properties.appendChild(appearanceElement);
		}
		appearanceElement.setAttribute("backgroundImage", backgroundImage);
	}

	if (textColor.isValid()) {
		TQDomElement appearanceElement = XMLWork::getElement(properties, "appearance");
		if (appearanceElement.tagName().isEmpty()) { // If there is not already an appearance tag, add it since we will access it below
			appearanceElement = document->createElement("appearance");
			properties.appendChild(appearanceElement);
		}
		appearanceElement.setAttribute("textColor", textColor.name());
	}

	// Load it in the parent basket (it will save the tree and switch to this new basket):
	Global::bnpView->loadNewBasket(folderName, properties, parent);
}