cmslinkgallery.java

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/*
 * File   : $Source: /usr/local/cvs/opencms/src/org/opencms/workplace/galleries/CmsLinkGallery.java,v $
 * Date   : $Date: 2007-08-13 16:30:12 $
 * Version: $Revision: 1.25 $
 *
 * This library is part of OpenCms -
 * the Open Source Content Management System
 *
 * Copyright (c) 2002 - 2007 Alkacon Software GmbH (http://www.alkacon.com)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 for more details.
 *
 * For further information about Alkacon Software GmbH, please see the
 * company website: http://www.alkacon.com
 *
 * For further information about OpenCms, please see the
 * project website: http://www.opencms.org
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package org.opencms.workplace.galleries;

import org.opencms.file.CmsFile;
import org.opencms.file.CmsProperty;
import org.opencms.file.CmsPropertyDefinition;
import org.opencms.file.CmsResource;
import org.opencms.file.types.CmsResourceTypePointer;
import org.opencms.i18n.CmsEncoder;
import org.opencms.jsp.CmsJspActionElement;
import org.opencms.lock.CmsLock;
import org.opencms.main.CmsException;
import org.opencms.main.CmsLog;
import org.opencms.main.OpenCms;
import org.opencms.util.CmsStringUtil;
import org.opencms.workplace.CmsWorkplace;
import org.opencms.workplace.explorer.CmsNewResource;
import org.opencms.workplace.explorer.CmsNewResourceUpload;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.PageContext;

import org.apache.commons.logging.Log;

/**
 * Generates the links gallery popup window which can be used in editors or as a dialog widget.<p>
 * 
 * The following files use this class:
 * <ul>
 * <li>/commons/galeries/download_fs.jsp
 * </ul>
 * <p>
 * 
 * @author Armen Markarian 
 * 
 * @version $Revision: 1.25 $ 
 * 
 * @since 6.0.0 
 */
public class CmsLinkGallery extends A_CmsGallery {

    /**
     *  Request parameter name needed for the action: edit property value.<p>
     *  
     *  The value of this request parameter will denote the property to edit on the pointer resource.<p>
     */
    public static final String PARAM_EDITPROPERTY = A_CmsGallery.DIALOG_EDITPROPERTY;

    /**
     *  Request parameter name needed for the action: edit property value.<p>
     *  
     *  The value of this request parameter will contain the value for the property to edit which 
     *  is denoted by <code>{@link #PARAM_EDITPROPERTY}</code>.<p>
     */
    public static final String PARAM_EDITPROPERTY_VALUE = A_CmsGallery.DIALOG_EDITPROPERTY + "value";

    /** URI of the image gallery popup dialog. */
    public static final String URI_GALLERY = PATH_GALLERIES + "link_fs.jsp";

    /** Request parameter value for parameter  <code>{@link #PARAM_EDITPROPERTY}</code> for editing the link of a pointer. */
    public static final String VALUE_EDITPROPERTY_LINK = "editpropertylink";

    /** Request parameter value for parameter  <code>{@link #PARAM_EDITPROPERTY}</code> for editing the title of a pointer. */
    public static final String VALUE_EDITPROPERTY_TITLE = "editpropertytitle";

    /** The log object for this class. */
    private static final Log LOG = CmsLog.getLog(CmsLinkGallery.class);

    /** The order value of the gallery for sorting the galleries. */
    private static final Integer ORDER_GALLERY = new Integer(30);

    /** The property to edit on the previewed resource. */
    private String m_paramEditProperty;

    /** The property value to edit for the property <code>{@link #m_paramEditProperty}</code> on the previewed resource. */
    private String m_paramEditPropertyValue;

    /**
     * Public empty constructor, required for {@link A_CmsGallery#createInstance(String, CmsJspActionElement)}.<p>
     */
    public CmsLinkGallery() {

        // noop
    }

    /**
     * Public constructor with JSP action element.<p>
     * 
     * @param jsp an initialized JSP action element
     */
    public CmsLinkGallery(CmsJspActionElement jsp) {

        super(jsp);
    }

    /**
     * Public constructor with JSP variables.<p>
     * 
     * @param context the JSP page context
     * @param req the JSP request
     * @param res the JSP response
     */
    public CmsLinkGallery(PageContext context, HttpServletRequest req, HttpServletResponse res) {

        this(new CmsJspActionElement(context, req, res));
    }

    /**
     * @see org.opencms.workplace.galleries.A_CmsGallery#applyButton()
     */
    public String applyButton() {

        if (MODE_VIEW.equals(getParamDialogMode())) {
            // in view mode, generate disabled button
            return button(null, null, "apply_in.png", Messages.GUI_BUTTON_PASTE_0, 0);
        } else {
            String uri = getParamResourcePath();
            if (MODE_WIDGET.equals(getParamDialogMode())) {
                // get real link target in widget mode from file content
                try {
                    CmsResource res = getCms().readResource(getParamResourcePath());
                    uri = new String(getCms().readFile(res).getContents());
                } catch (CmsException e) {
                    // this should never happen
                    LOG.error(e.getLocalizedMessage(), e);
                }
            } else {
                // in editor mode, create a valid link from resource path
                uri = getJsp().link(uri);
            }

            return button(
                "javascript:link('" + uri + "',document.form.title.value, document.form.title.value);",
                null,
                "apply.png",
                Messages.GUI_BUTTON_PASTE_0,
                0);
        }
    }

    /**
     * Builds the html String for the buttonbar frame.<p>
     * 
     * @return the html String for the buttonbar frame
     */
    public String buildGalleryButtonBar() {

        StringBuffer buttonBar = new StringBuffer();
        try {
            if (CmsStringUtil.isNotEmpty(getParamResourcePath())) {
                // we have a resource to display
                CmsResource res = getCms().readResource(getParamResourcePath());
                if (res != null) {
                    setCurrentResource(res);
                    String title = CmsEncoder.escapeXml(getPropertyValue(res, CmsPropertyDefinition.PROPERTY_TITLE));
                    buttonBar.append("<table cellpadding=\"0\" cellspacing=\"0\" border=\"0\" ");
                    buttonBar.append("style=\"align: left; width:100%; background-color: ThreeDFace; margin: 0; border-right: 1px solid ThreeDShadow\">");
                    buttonBar.append("<tr align=\"left\">");
                    buttonBar.append(buttonBarStartTab(0, 0));
                    // apply button
                    buttonBar.append(applyButton());
                    // publish button
                    buttonBar.append(publishButton());
                    // delete button
                    buttonBar.append(deleteButton());
                    buttonBar.append(buttonBarSeparator(5, 5));
                    buttonBar.append("<td class=\"nowrap\"><b><nobr>");
                    buttonBar.append(title).append("</nobr></b>&nbsp;</td>\n");
                    buttonBar.append("<td class=\"maxwidth\">&nbsp;</td>\n");
                    // hidden field 
                    buttonBar.append("<input type=\"hidden\" name=\"");
                    buttonBar.append(PARAM_PROPERTYVALUE);
                    buttonBar.append("\" value=\"");
                    buttonBar.append(title);
                    buttonBar.append("\">\r\n");
                    // target select
                    buttonBar.append(targetSelectBox());
                    // preview button
                    buttonBar.append(previewButton());
                    buttonBar.append(buttonBar(HTML_END));
                }
            } else {
                // no resource to display, create empty row
                buttonBar.append("<table cellpadding=\"0\" cellspacing=\"0\" border=\"0\"><tr><td>");
                buttonBar.append("<img height=\"22\" border=\"0\" src=\"");
                buttonBar.append(getJsp().link(CmsWorkplace.VFS_PATH_RESOURCES + "tree/empty.gif"));
                buttonBar.append("\">");
                buttonBar.append("</td></tr></table>");
            }
        } catch (CmsException e) {
            // resource is deleted, display empty table
            buttonBar.append("<table cellpadding=\"0\" cellspacing=\"0\" border=\"0\"><tr><td>");
            buttonBar.append("<img height=\"22\" border=\"0\" src=\"");
            buttonBar.append(getJsp().link(CmsWorkplace.VFS_PATH_RESOURCES + "tree/empty.gif"));
            buttonBar.append("\">");
            buttonBar.append("</td></tr></table>");
        }
        return buttonBar.toString();
    }

    /**
     * Builds the html String for the preview frame.<p>
     * 
     * @return the html String for the preview frame
     */
    public String buildGalleryItemPreview() {

        StringBuffer html = new StringBuffer(32);
        try {
            if (CmsStringUtil.isNotEmpty(getParamResourcePath())) {
                CmsResource res = getCms().readResource(getParamResourcePath());
                if (res != null) {
                    setCurrentResource(res);
                    // overtake the values in case this is an edit submit