- Abstrakte Basisklasse für Upload-Formulare hinzugefügt. Der Code ist zum größten Teil aus TextAssetBody übernommen. Im Gegensatz zum Textasset werden die Texte
aber im jeweiligen Objekt gespeichert. Das Formular kann durch Erstellen einer abgeleiteten Klasse mit einem einfachen Konstruktor und drei überschriebenen Methoden verwendet werden (s. JavaDoc). - SciProjectDescriptionUploadForm ist jetzt von AbstractTextUploadForm abgeleitet. git-svn-id: https://svn.libreccm.org/ccm/trunk@569 8810af33-2d31-482b-a856-94f89814c4dfmaster
jensp
parent
d0e92f426e
commit
bbccc86661
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@ -0,0 +1,324 @@
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/*
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* Copyright (c) 2010 Jens Pelzetter,
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* for the Center of Social Politics of the University of Bremen
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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package com.arsdigita.cms.contenttypes.ui;
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import com.arsdigita.bebop.BoxPanel;
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import com.arsdigita.bebop.Form;
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import com.arsdigita.bebop.FormProcessException;
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import com.arsdigita.bebop.Label;
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import com.arsdigita.bebop.PageState;
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import com.arsdigita.bebop.RequestLocal;
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import com.arsdigita.bebop.SaveCancelSection;
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import com.arsdigita.bebop.event.FormInitListener;
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import com.arsdigita.bebop.event.FormProcessListener;
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import com.arsdigita.bebop.event.FormSectionEvent;
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import com.arsdigita.bebop.event.FormValidationListener;
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import com.arsdigita.bebop.form.FormErrorDisplay;
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import com.arsdigita.bebop.parameters.NotNullValidationListener;
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import com.arsdigita.bebop.util.GlobalizationUtil;
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import com.arsdigita.cms.ItemSelectionModel;
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import com.arsdigita.cms.ui.FileUploadSection;
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import com.arsdigita.globalization.Globalization;
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import com.arsdigita.globalization.GlobalizedMessage;
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import com.arsdigita.kernel.Kernel;
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import com.arsdigita.mimetypes.MimeType;
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import com.arsdigita.mimetypes.MimeTypeStatus;
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import com.arsdigita.mimetypes.TextMimeType;
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import com.arsdigita.mimetypes.converters.ConvertFormat;
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import com.arsdigita.util.UncheckedWrapperException;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.UnsupportedEncodingException;
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import org.apache.log4j.Logger;
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/**
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* <p>
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* An abstract base form for uploading Texts. The code of this class has been
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* extracted from {@link TextAssetBody}, the form for editing an TextAsset
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* (used for example for Article). The TextAsset has the disadvantage of storing
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* its information in a separate table, so that information of a content item
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* is spread over several tables.
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* </p>
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* <p>
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* To use this form, define a property for your object which has the Java type
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* String and the database type CLOB, like this:
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* </p>
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* <pre>
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* String[0..1] text = ct_yourContenttype.text CLOB
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* </pre>
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* <p>
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* To use this form your have to overwrite three methods:
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* </p>
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* <ul>
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* <li>{@link #getLabelText()}</li>
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* <li>{@link #getMimeTypeLabel()}</li>
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* <li>{@link #setText()}</li>
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* </ul>
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* <li>
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* Of course, you have to add your form to a property step also, and write a
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* simple constructor, which takes an {@link ItemSelectionModel} as parameter
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* and passes it to the constructor of this class.
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* </li>
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*
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*
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* @author Jens Pelzetter
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*/
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public abstract class AbstractTextUploadForm
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extends Form
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implements FormInitListener,
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FormProcessListener,
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FormValidationListener {
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private ItemSelectionModel m_itemModel;
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private FileUploadSection m_fileUploadSection;
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private SaveCancelSection m_saveCancelSection;
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private RequestLocal m_fileUploadContent;
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private RequestLocal m_fileUploadContentUsedInso;
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private Logger s_log = Logger.getLogger(
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AbstractTextUploadForm.class);
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public AbstractTextUploadForm(ItemSelectionModel itemModel) {
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super("sciprojectUploadDescFrom", new BoxPanel(BoxPanel.VERTICAL));
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m_itemModel = itemModel;
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setMethod(Form.POST);
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setEncType("multipart/form-data");
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m_fileUploadContent = new RequestLocal();
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m_fileUploadContentUsedInso = new RequestLocal();
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addWidgets();
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}
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//Abstract methods to overwrite
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/**
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* The return value of this method is used as label for the upload form.
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*
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* @return The label for the upload form.
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*/
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public abstract GlobalizedMessage getLabelText();
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/**
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* The return value of this method is used as label for the MimeType field.
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*
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* @return The label for the MimeType field.
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*/
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public abstract GlobalizedMessage getMimeTypeLabel();
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/**
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* <p>
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* This method is called to pass the uploaded text to the edited object. In
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* the method, you have to retrieve the current selected object from the
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* <code>itemModel</code> parameter and call the appropriate
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* <code>set</code> of your class, and its save method. An simple example:
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* </p>
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* <pre>
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* @Override
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* public void setText(ItemSelectionModel itemModel,
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* PageState state,
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* String text) {
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* YourContentType obj = (YourContentType) itemModel.getSelectedObject(state);
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* obj.setText(text);
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* obj.save();
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* }
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* </pre>
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*
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* @param itemModel The {@link ItemSelectionModel} used by the form.
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* @param state The current {@link PageState}.
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* @param text The uploaded text.
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*/
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public abstract void setText(ItemSelectionModel itemModel,
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PageState state,
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String text);
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protected void addWidgets() {
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add(new Label(getLabelText()));
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m_fileUploadSection = new FileUploadSection(
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getMimeTypeLabel(),
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"mime",
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"text/plain");
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m_fileUploadSection.getFileUploadWidget().addValidationListener(
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new NotNullValidationListener());
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m_fileUploadSection.getMimeTypeWidget().setDefaultValue(
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FileUploadSection.GUESS_MIME);
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add(m_fileUploadSection);
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m_saveCancelSection = new SaveCancelSection();
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add(m_saveCancelSection);
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add(new FormErrorDisplay(this));
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this.addValidationListener(this);
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this.addProcessListener(this);
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}
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/**
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* @return the save/cancel section for this form
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*/
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public SaveCancelSection getSaveCancelSection() {
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return m_saveCancelSection;
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}
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@Override
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public void init(FormSectionEvent fse) throws FormProcessException {
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PageState state = fse.getPageState();
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setVisible(state, true);
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}
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/**
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* Validate file upload
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* @param e
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* @throws FormProcessException
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*/
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@Override
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public void validate(FormSectionEvent e) throws FormProcessException {
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MimeType mime = m_fileUploadSection.getMimeType(e);
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boolean textType = mime.getPrefix().equals(TextMimeType.TEXT_PREFIX);
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validateFileType(mime, textType);
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// Convert the file to HTML, if possible
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File file = m_fileUploadSection.getFile(e);
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byte[] file_bytes = readFileBytes(file);
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boolean[] used_inso = new boolean[1];
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String file_content = convertBytes(file_bytes, textType, used_inso);
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if (TextMimeType.MIME_TEXT_HTML.equals(mime.getMimeType())) {
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file_content = extractHTMLBody(file_content);
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}
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PageState state = e.getPageState();
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m_fileUploadContent.set(state, file_content);
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m_fileUploadContentUsedInso.set(state, used_inso[0]);
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}
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@Override
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public void process(FormSectionEvent fse) throws FormProcessException {
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s_log.debug("Processing upload...");
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PageState state = fse.getPageState();
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//File file = m_fileUploadSection.getFile(fse);
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//SciProject project = (SciProject) m_itemModel.getSelectedObject(state);
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String uploadContent = (String) m_fileUploadContent.get(state);
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//boolean usedInso = (Boolean) m_fileUploadContentUsedInso.get(state);
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s_log.debug(String.format("Setting project description to: %s",
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uploadContent));
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//project.setProjectDescription(uploadContent);
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s_log.debug("Saving project.");
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//project.save();
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setText(m_itemModel, state, uploadContent);
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}
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private void validateFileType(MimeType mime, boolean textType)
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throws FormProcessException {
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boolean validType = textType || ((mime instanceof TextMimeType) && ((TextMimeType) mime).
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allowINSOConvert().booleanValue());
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if (!validType) {
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throw new FormProcessException("Cannot load " + "files of type " + mime.
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getMimeType() + " into the article body.");
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} else {
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boolean insoWorks = MimeTypeStatus.getMimeTypeStatus().
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getInsoFilterWorks().intValue() == 1;
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if (!textType && !insoWorks) {
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// Can't convert. inso filter is not working. Give message.
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throw new FormProcessException(
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"Could not convert to html "
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+ "format because interMedia INSO filter is not installed.");
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}
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}
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}
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/**
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* read in the content of the file (in bytes).
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*/
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private byte[] readFileBytes(File file) throws FormProcessException {
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byte[] file_bytes;
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try {
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FileInputStream fs = new FileInputStream(file);
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file_bytes = new byte[fs.available()];
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fs.read(file_bytes);
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fs.close();
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} catch (Exception e) {
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throw new FormProcessException(
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((String) GlobalizationUtil.globalize(
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"cms.ui.authoring.unable_to_load_file").
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localize()).concat(e.getMessage()));
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}
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return file_bytes;
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}
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/**
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* Convert bytes to String, possibly using INSO filter to convert to
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* HTML type
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*/
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private String convertBytes(byte[] file_bytes, boolean text_type,
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boolean[] used_inso)
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throws FormProcessException {
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String file_content;
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// If mime type is not text type, try to convert to html
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if (!text_type) {
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file_content = ConvertFormat.toHTML(file_bytes);
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if (file_content != null) {
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// Converted successfully, flag type should be html
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used_inso[0] = true;
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} else {
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throw new FormProcessException(
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"Could not convert to html format. "
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+ "interMedia INSO filter conversion failed.");
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}
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} else {
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// Text type, no need to convert
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String enc = Globalization.getDefaultCharset(Kernel.getContext().
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getLocale());
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try {
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file_content = new String(file_bytes, enc);
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} catch (UnsupportedEncodingException ex) {
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throw new UncheckedWrapperException("cannot convert to encoding "
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+ enc, ex);
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}
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used_inso[0] = false;
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}
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return file_content;
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}
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/**
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* Extract the contents of the html Body tag.
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* (Done to prevent base and other header tags
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* from interfering with page display).
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*/
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private String extractHTMLBody(String htmlText)
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throws FormProcessException {
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String lc = htmlText.toLowerCase();
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int bodyStart = lc.indexOf("<body");
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int bodyStart_v = lc.indexOf(">", bodyStart);
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int bodyEnd = lc.indexOf("</body>", bodyStart_v);
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if (bodyStart == -1 || bodyEnd == -1) {
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final String errMsg =
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"The file (which should be type "
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+ "HTML) is missing the <body> or </body> tag.";
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throw new FormProcessException(errMsg);
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}
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return htmlText.substring(bodyStart_v + 1, bodyEnd);
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}
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}
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@ -1,236 +1,37 @@
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package com.arsdigita.cms.contenttypes.ui;
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import com.arsdigita.bebop.BoxPanel;
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import com.arsdigita.bebop.Form;
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import com.arsdigita.bebop.FormProcessException;
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import com.arsdigita.bebop.Label;
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import com.arsdigita.bebop.PageState;
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import com.arsdigita.bebop.RequestLocal;
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import com.arsdigita.bebop.SaveCancelSection;
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import com.arsdigita.bebop.event.FormInitListener;
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import com.arsdigita.bebop.event.FormProcessListener;
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import com.arsdigita.bebop.event.FormSectionEvent;
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import com.arsdigita.bebop.event.FormValidationListener;
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import com.arsdigita.bebop.form.FormErrorDisplay;
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import com.arsdigita.bebop.parameters.NotNullValidationListener;
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import com.arsdigita.bebop.util.GlobalizationUtil;
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import com.arsdigita.cms.ItemSelectionModel;
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import com.arsdigita.cms.contenttypes.SciProject;
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import com.arsdigita.cms.ui.FileUploadSection;
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import com.arsdigita.globalization.Globalization;
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import com.arsdigita.kernel.Kernel;
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import com.arsdigita.mimetypes.MimeType;
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import com.arsdigita.mimetypes.MimeTypeStatus;
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import com.arsdigita.mimetypes.TextMimeType;
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import com.arsdigita.mimetypes.converters.ConvertFormat;
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import com.arsdigita.util.UncheckedWrapperException;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.UnsupportedEncodingException;
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import org.apache.log4j.Logger;
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import com.arsdigita.globalization.GlobalizedMessage;
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/**
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*
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* @author Jens Pelzetter
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*/
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public class SciProjectDescriptionUploadForm
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extends Form
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implements FormInitListener,
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FormProcessListener,
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FormValidationListener {
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private ItemSelectionModel m_itemModel;
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private FileUploadSection m_fileUploadSection;
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private SaveCancelSection m_saveCancelSection;
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private RequestLocal m_fileUploadContent;
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private RequestLocal m_fileUploadContentUsedInso;
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private Logger s_log = Logger.getLogger(
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SciProjectDescriptionUploadForm.class);
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public class SciProjectDescriptionUploadForm extends AbstractTextUploadForm {
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public SciProjectDescriptionUploadForm(ItemSelectionModel itemModel) {
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super("sciprojectUploadDescFrom", new BoxPanel(BoxPanel.VERTICAL));
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m_itemModel = itemModel;
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setMethod(Form.POST);
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setEncType("multipart/form-data");
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m_fileUploadContent = new RequestLocal();
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m_fileUploadContentUsedInso = new RequestLocal();
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addWidgets();
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}
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protected void addWidgets() {
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add(new Label(SciOrganizationGlobalizationUtil.globalize(
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"sciorganization.ui.project.description.upload")));
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m_fileUploadSection = new FileUploadSection(
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SciOrganizationGlobalizationUtil.globalize(
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"sciorganization.ui.project.description.upload.mimetype"),
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"mime",
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"text/plain");
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m_fileUploadSection.getFileUploadWidget().addValidationListener(
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new NotNullValidationListener());
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m_fileUploadSection.getMimeTypeWidget().setDefaultValue(
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FileUploadSection.GUESS_MIME);
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add(m_fileUploadSection);
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m_saveCancelSection = new SaveCancelSection();
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add(m_saveCancelSection);
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add(new FormErrorDisplay(this));
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this.addValidationListener(this);
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this.addProcessListener(this);
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}
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/**
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* @return the save/cancel section for this form
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*/
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public SaveCancelSection getSaveCancelSection() {
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return m_saveCancelSection;
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super(itemModel);
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}
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@Override
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public void init(FormSectionEvent fse) throws FormProcessException {
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PageState state = fse.getPageState();
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setVisible(state, true);
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}
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/**
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* Validate file upload
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* @param e
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* @throws FormProcessException
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*/
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@Override
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public void validate(FormSectionEvent e) throws FormProcessException {
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MimeType mime = m_fileUploadSection.getMimeType(e);
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boolean textType = mime.getPrefix().equals(TextMimeType.TEXT_PREFIX);
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validateFileType(mime, textType);
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// Convert the file to HTML, if possible
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File file = m_fileUploadSection.getFile(e);
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byte[] file_bytes = readFileBytes(file);
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boolean[] used_inso = new boolean[1];
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String file_content = convertBytes(file_bytes, textType, used_inso);
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if (TextMimeType.MIME_TEXT_HTML.equals(mime.getMimeType())) {
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file_content = extractHTMLBody(file_content);
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}
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PageState state = e.getPageState();
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m_fileUploadContent.set(state, file_content);
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m_fileUploadContentUsedInso.set(state, used_inso[0]);
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public GlobalizedMessage getLabelText() {
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return SciOrganizationGlobalizationUtil.globalize(
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"sciorganization.ui.project.description.upload");
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}
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@Override
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public void process(FormSectionEvent fse) throws FormProcessException {
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s_log.debug("Processing upload...");
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PageState state = fse.getPageState();
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//File file = m_fileUploadSection.getFile(fse);
|
||||
SciProject project = (SciProject) m_itemModel.getSelectedObject(state);
|
||||
public GlobalizedMessage getMimeTypeLabel() {
|
||||
return SciOrganizationGlobalizationUtil.globalize(
|
||||
"sciorganization.ui.project.description.upload.mimetype");
|
||||
}
|
||||
|
||||
String uploadContent = (String) m_fileUploadContent.get(state);
|
||||
//boolean usedInso = (Boolean) m_fileUploadContentUsedInso.get(state);
|
||||
|
||||
s_log.debug(String.format("Setting project description to: %s",
|
||||
uploadContent));
|
||||
project.setProjectDescription(uploadContent);
|
||||
s_log.debug("Saving project.");
|
||||
@Override
|
||||
public void setText(ItemSelectionModel itemModel, PageState state,
|
||||
String text) {
|
||||
SciProject project = (SciProject) itemModel.getSelectedObject(state);
|
||||
project.setProjectDescription(text);
|
||||
project.save();
|
||||
}
|
||||
|
||||
private void validateFileType(MimeType mime, boolean textType)
|
||||
throws FormProcessException {
|
||||
|
||||
boolean validType = textType || ((mime instanceof TextMimeType) && ((TextMimeType) mime).
|
||||
allowINSOConvert().booleanValue());
|
||||
|
||||
if (!validType) {
|
||||
throw new FormProcessException("Cannot load " + "files of type " + mime.
|
||||
getMimeType() + " into the article body.");
|
||||
} else {
|
||||
boolean insoWorks = MimeTypeStatus.getMimeTypeStatus().
|
||||
getInsoFilterWorks().intValue() == 1;
|
||||
|
||||
if (!textType && !insoWorks) {
|
||||
// Can't convert. inso filter is not working. Give message.
|
||||
throw new FormProcessException(
|
||||
"Could not convert to html "
|
||||
+ "format because interMedia INSO filter is not installed.");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* read in the content of the file (in bytes).
|
||||
*/
|
||||
private byte[] readFileBytes(File file) throws FormProcessException {
|
||||
byte[] file_bytes;
|
||||
try {
|
||||
FileInputStream fs = new FileInputStream(file);
|
||||
file_bytes = new byte[fs.available()];
|
||||
fs.read(file_bytes);
|
||||
fs.close();
|
||||
} catch (Exception e) {
|
||||
throw new FormProcessException(
|
||||
((String) GlobalizationUtil.globalize(
|
||||
"cms.ui.authoring.unable_to_load_file").
|
||||
localize()).concat(e.getMessage()));
|
||||
}
|
||||
return file_bytes;
|
||||
}
|
||||
|
||||
/**
|
||||
* Convert bytes to String, possibly using INSO filter to convert to
|
||||
* HTML type
|
||||
*/
|
||||
private String convertBytes(byte[] file_bytes, boolean text_type,
|
||||
boolean[] used_inso)
|
||||
throws FormProcessException {
|
||||
String file_content;
|
||||
// If mime type is not text type, try to convert to html
|
||||
if (!text_type) {
|
||||
file_content = ConvertFormat.toHTML(file_bytes);
|
||||
if (file_content != null) {
|
||||
// Converted successfully, flag type should be html
|
||||
used_inso[0] = true;
|
||||
} else {
|
||||
throw new FormProcessException(
|
||||
"Could not convert to html format. "
|
||||
+ "interMedia INSO filter conversion failed.");
|
||||
}
|
||||
} else {
|
||||
// Text type, no need to convert
|
||||
String enc = Globalization.getDefaultCharset(Kernel.getContext().
|
||||
getLocale());
|
||||
try {
|
||||
file_content = new String(file_bytes, enc);
|
||||
} catch (UnsupportedEncodingException ex) {
|
||||
throw new UncheckedWrapperException("cannot convert to encoding "
|
||||
+ enc, ex);
|
||||
}
|
||||
used_inso[0] = false;
|
||||
}
|
||||
return file_content;
|
||||
}
|
||||
|
||||
/**
|
||||
* Extract the contents of the html Body tag.
|
||||
* (Done to prevent base and other header tags
|
||||
* from interfering with page display).
|
||||
*/
|
||||
private String extractHTMLBody(String htmlText)
|
||||
throws FormProcessException {
|
||||
String lc = htmlText.toLowerCase();
|
||||
int bodyStart = lc.indexOf("<body");
|
||||
int bodyStart_v = lc.indexOf(">", bodyStart);
|
||||
int bodyEnd = lc.indexOf("</body>", bodyStart_v);
|
||||
if (bodyStart == -1 || bodyEnd == -1) {
|
||||
final String errMsg =
|
||||
"The file (which should be type "
|
||||
+ "HTML) is missing the <body> or </body> tag.";
|
||||
throw new FormProcessException(errMsg);
|
||||
}
|
||||
return htmlText.substring(bodyStart_v + 1, bodyEnd);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue