burrito.client.sitelet.SiteletEditPanel.java Source code

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Here is the source code for burrito.client.sitelet.SiteletEditPanel.java

Source

/**
 * Copyright 2011 Henric Persson (henric.persson@gmail.com)
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package burrito.client.sitelet;

import java.util.List;

import burrito.client.crud.CrudEntityEdit;
import burrito.client.crud.CrudService;
import burrito.client.crud.CrudServiceAsync;
import burrito.client.crud.generic.CrudEntityDescription;
import burrito.client.crud.generic.CrudEntityInfo;
import burrito.client.crud.labels.CrudLabelHelper;
import burrito.client.crud.labels.CrudMessages;
import burrito.client.dto.SiteletDescription;

import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.History;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Anchor;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.SimplePanel;
import com.google.gwt.user.client.ui.VerticalPanel;
import burrito.client.widgets.form.EditForm;
import burrito.client.widgets.layout.VerticalSpacer;

public class SiteletEditPanel extends Composite {

    private VerticalPanel wrapper = new VerticalPanel();
    private VerticalPanel types = new VerticalPanel();
    private SimplePanel editFormPlaceHolder = new SimplePanel();
    private CrudServiceAsync crudService = GWT.create(CrudService.class);
    private SiteletServiceAsync service = GWT.create(SiteletService.class);
    private String containerName;
    private static CrudMessages labels = GWT.create(CrudMessages.class);

    public SiteletEditPanel(String containerName, Long id) {
        this.containerName = containerName;
        wrapper.add(types);
        wrapper.add(editFormPlaceHolder);
        if (id.longValue() == -1L) {
            service.getSiteletTypes(new AsyncCallback<List<CrudEntityInfo>>() {

                public void onSuccess(List<CrudEntityInfo> result) {
                    types.add(new Label(labels.selectSiteletType()));
                    types.add(new VerticalSpacer(5));
                    for (CrudEntityInfo crudEntityInfo : result) {
                        addEntityOption(crudEntityInfo);
                    }

                }

                public void onFailure(Throwable caught) {
                    throw new RuntimeException("Failed to get sitelet types");
                }
            });
        } else {
            service.getSitelet(id, new AsyncCallback<SiteletDescription>() {

                public void onSuccess(SiteletDescription result) {
                    loadEntity(result.getEntityName(), result.getEntityId());
                }

                public void onFailure(Throwable caught) {
                    throw new RuntimeException("Failed to get sitelet", caught);
                }
            });
        }
        initWidget(wrapper);
    }

    private Anchor createTypeLink(final String entityName, String displayString) {
        Anchor a = new Anchor(displayString);
        a.addClickHandler(new ClickHandler() {

            public void onClick(ClickEvent event) {
                loadEntity(entityName, -1l);
                types.setVisible(false);
            }
        });
        return a;
    }

    protected void loadEntity(final String entityName, final Long entityId) {
        crudService.describe(entityName, entityId, null, new AsyncCallback<CrudEntityDescription>() {

            public void onSuccess(CrudEntityDescription result) {
                final CrudEntityEdit editForm = new CrudEntityEdit(result);
                editForm.setSaveCancelListener(new EditForm.SaveCancelListener() {

                    public void onSave() {
                        if (entityId.longValue() == -1l) {
                            doSaveSitelet(entityName, editForm.getSavedId());
                        } else {
                            History.newItem("");
                        }
                        clearCache(editForm.getSavedId());
                    }

                    public void onPartialSave(String warning) {
                        throw new UnsupportedOperationException();
                    }

                    public void onCancel() {
                        History.newItem("");
                    }
                });
                editFormPlaceHolder.setWidget(editForm);
            }

            public void onFailure(Throwable caught) {
                throw new RuntimeException("Failed to load entity to edit: " + entityName, caught);
            }
        });
    }

    private void doSaveSitelet(String entityName, Long savedId) {
        boolean addOnTop = "true".equals(Window.Location.getParameter("addOnTop"));
        service.addSitelet(containerName, entityName, savedId, addOnTop, new AsyncCallback<Void>() {

            public void onSuccess(Void result) {
                History.newItem("");
            }

            public void onFailure(Throwable caught) {
                throw new RuntimeException("Failed to add sitelet to sitelet container", caught);
            }
        });
    }

    private void addEntityOption(CrudEntityInfo crudEntityInfo) {
        HorizontalPanel fp = new HorizontalPanel();
        String underscore = crudEntityInfo.getEntityName().replace('.', '_');
        fp.add(createTypeLink(crudEntityInfo.getEntityName(), CrudLabelHelper.getString(underscore)));
        String desc = CrudLabelHelper.getNullableString(underscore + "_desc");
        if (desc != null) {
            fp.add(new HTML("&nbsp;-&nbsp;" + desc));
        }
        types.add(fp);
        types.add(new VerticalSpacer(10));
    }

    private void clearCache(Long id) {
        service.clearCache(id, new AsyncCallback<Void>() {

            public void onSuccess(Void result) {
                //do nothing
            }

            public void onFailure(Throwable caught) {
                throw new RuntimeException("Failed to clear cache for " + containerName, caught);
            }
        });
    }

}