org.fossa.vaadin.ui.FossaForm.java Source code

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Here is the source code for org.fossa.vaadin.ui.FossaForm.java

Source

/**
 * Copyright (c) 2013, 2014 Frank Kaddereit, Anne Lachnitt, http://www.fossa.de/
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

package org.fossa.vaadin.ui;

import java.util.Arrays;
import java.util.List;

import org.fossa.vaadin.laso.FossaLaso;
import org.fossa.vaadin.ui.exception.FossaFormInvalidException;

import com.vaadin.data.Item;
import com.vaadin.data.util.BeanItem;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.Button.ClickListener;
import com.vaadin.ui.Form;
import com.vaadin.ui.HorizontalLayout;

public abstract class FossaForm extends Form implements ClickListener {

    private static final long serialVersionUID = 667889335770342183L;

    protected Button close = new Button("Schlieen", (ClickListener) this);
    protected Button save = new Button("Speichern", (ClickListener) this);
    protected Button cancel = new Button("Abbrechen", (ClickListener) this);
    protected Button edit = new Button("Bearbeiten", (ClickListener) this);
    private boolean newFormMode = false;
    protected FossaLaso fossaLaso = null;

    public FossaForm() {
        setWriteThrough(false);
        HorizontalLayout footer = new HorizontalLayout();
        footer.setSpacing(true);
        footer.addComponent(save);
        footer.addComponent(cancel);
        footer.addComponent(edit);
        footer.addComponent(close);
        footer.setVisible(false);
        setFooter(footer);
        super.setReadOnly(true);
    }

    @Override
    public void buttonClick(ClickEvent event) {
        Button source = event.getButton();
        if (source == save) {
            try {
                saveFossaForm();
            } catch (FossaFormInvalidException e) {
                getWindow().showNotification(e.getMessage());
            }
        } else if (source == cancel) {
            if (newFormMode) {
                setItemDataSource(new BeanItem<FossaLaso>(fossaLaso));
                closeWindow();
                newFormMode = true;
                return;
            } else {
                discard();
                ((FossaLaso) fossaLaso).unlock();
            }
            setReadOnly(true);
        } else if (source == edit) {
            editFossaForm();
        } else if (source == close) {
            closeWindow();
        }
    }

    protected void closeWindow() {
        ((FossaWindow) getWindow()).close();
        removeAllProperties();
    }

    public void setItemDataSource(Item newDataSource, Object[] order) {
        newFormMode = false;
        if (newDataSource != null) {
            List<Object> orderedProperties = Arrays.asList(order);
            super.setItemDataSource(newDataSource, orderedProperties);
            getFooter().setVisible(true);
        } else {
            super.setItemDataSource(null);
            getFooter().setVisible(false);
        }
    }

    private void editFossaForm() {
        setReadOnly(false);
    }

    @Override
    public void setReadOnly(boolean readOnly) {
        if (readOnly && !newFormMode && (fossaLaso != null) && !isReadOnly()) {
            ((FossaLaso) fossaLaso).unlock();
        } else if (!readOnly && !newFormMode) {
            if (((FossaLaso) fossaLaso).isLocked()) {
                getWindow().showNotification("LOCKED");
                return;
            } else {
                try {
                    Thread.sleep(200);
                } catch (InterruptedException e) {
                    //doesn't matter
                }
                if (((FossaLaso) fossaLaso).isLocked()) {
                    getWindow().showNotification("LOCKED");
                    return;
                } else {
                    ((FossaLaso) fossaLaso).lock();
                }
            }
        }
        super.setReadOnly(readOnly);
        save.setVisible(!readOnly);
        cancel.setVisible(!readOnly);
        edit.setVisible(readOnly);
        close.setVisible(readOnly);
    }

    public void saveFossaForm() throws FossaFormInvalidException {
        if (!isValid()) {
            throw new FossaFormInvalidException();
        }
        commit();
        if (newFormMode) {
            setItemDataSource(addItemToContainer(fossaLaso));
            newFormMode = false;
        }
        setReadOnly(true);
    }

    abstract public Item addItemToContainer(FossaLaso fossaLaso);

    public void addTemporaryItem(FossaLaso fossa) {
        fossaLaso = fossa;
        setItemDataSource(new BeanItem<FossaLaso>(fossaLaso));
        newFormMode = true;
        setReadOnly(false);

    }

    public void setFossaLaso(FossaLaso fossa) {
        fossaLaso = fossa;
        setItemDataSource(new BeanItem<FossaLaso>(fossaLaso));
        setReadOnly(true);
    }

}