Package com.sun.star.wizards.web

Source Code of com.sun.star.wizards.web.StylePreview

/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: StylePreview.java,v $
* $Revision: 1.7 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org.  If not, see
* <http://www.openoffice.org/license.html>
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package com.sun.star.wizards.web;

import com.sun.star.lang.XMultiServiceFactory;
import com.sun.star.wizards.common.FileAccess;
import com.sun.star.wizards.web.data.CGStyle;

/**
* @author rpiterman
* the style preview, which is a OOo Document Preview in
* an Image Control.
* This class copies the files needed for this
* preview from the web wizard work directory
* to a given temporary directory, and updates them
* on request, according to the current style/background selection
* of the user.
*/
public class StylePreview {
    private FileAccess fileAccess;
    /**
     * the destination html url.
     */
    public String htmlFilename;
    /**
     * the destination css url
     */
    private String cssFilename;
    /**
     * destination directory
     */
    public String tempDir;
    /**
     * destination background file url
     */
    private String backgroundFilename;
    /**
     * web wizard work directory
     */
    private String wwRoot;
   
   
    /**
     * copies the html file to the temp directory, and calculates the
     * destination names of the background and css files.
     * @param wwRoot is the root directory of the web wizard files (
     * usually [oo]/share/template/[lang]/wizard/web
     */
    public StylePreview(XMultiServiceFactory xmsf, String wwRoot_) throws Exception {
        fileAccess = new FileAccess(xmsf);
       
        tempDir = createTempDir(xmsf);
       
        htmlFilename = FileAccess.connectURLs(tempDir , "wwpreview.html");
        cssFilename = FileAccess.connectURLs(tempDir ,"style.css");
        backgroundFilename = FileAccess.connectURLs(tempDir , "images/background.gif");
       
        wwRoot = wwRoot_;
       
        fileAccess.copy(FileAccess.connectURLs(wwRoot,"preview.html"), htmlFilename);
    }
   
    /**
     * copies the given style and background files to the temporary
     * directory.
     * @param style
     * @param background
     * @throws Exception
     */
    public void refresh(CGStyle style, String background) throws Exception {
       
        String css = FileAccess.connectURLs(wwRoot , "styles/" + style.cp_CssHref);
       
        if (background == null || background.equals("")) {
            //delete the background image
            if (fileAccess.exists(backgroundFilename,false))
                    fileAccess.delete(backgroundFilename);
        }
        else {
            // a solaris bug workaround
            // TODO
            //copy the background image to the temp directory.
            fileAccess.copy(background,backgroundFilename);
        }
        //copy the actual css to the temp directory
        fileAccess.copy(css,cssFilename);
    }
   
    public void cleanup() {
        try {
            removeTempDir();
        }
        catch (Exception ex) {
            ex.printStackTrace();
        }
    }
   
    /**
     * creates a temporary directory.
     * @param xmsf
     * @return the url of the new directory.
     * @throws Exception
     */
    private String createTempDir(XMultiServiceFactory xmsf) throws Exception {
        String tempPath = FileAccess.getOfficePath(xmsf,"Temp","", "") ;
        String s = fileAccess.createNewDir(tempPath, "wwiz");
        fileAccess.createNewDir(s,"images");
        return s;
    }
   
    /**
     * deletes/removes the temporary directroy.
     * @throws Exception
     */
    private void removeTempDir() throws Exception {
        fileAccess.delete(tempDir);
    }

}
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