org.openeos.services.ui.vaadin.internal.abstractform.EntityActionPanelController.java Source code

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Here is the source code for org.openeos.services.ui.vaadin.internal.abstractform.EntityActionPanelController.java

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/**
 * Copyright 2014 Fernando Rincon Martin <frm.rincon@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 org.openeos.services.ui.vaadin.internal.abstractform;

import java.util.List;

import org.openeos.services.ui.ConfirmationCallback;
import org.openeos.services.ui.UIApplication;
import org.openeos.services.ui.UIBean;
import org.openeos.services.ui.action.EntityAction;
import org.openeos.services.ui.action.UIEntityActionManager;
import org.openeos.services.ui.model.ITab.View;
import org.openeos.services.ui.model.IWindow;
import org.openeos.services.ui.model.RefreshType;
import org.openeos.services.ui.model.SelectionChangeEvent;
import org.openeos.services.ui.model.SelectionChangeListener;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.Button.ClickListener;
import com.vaadin.ui.Component;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.Panel;
import com.vaadin.ui.themes.Reindeer;

public class EntityActionPanelController implements SelectionChangeListener {

    private UIEntityActionManager uiEntityActionManager;
    private IWindow window;
    private Class<?> entityClass;
    private UIApplication uiApplication;

    private Panel mainPanel;

    public EntityActionPanelController(UIEntityActionManager uiEntityActionManager, UIApplication uiApplication,
            IWindow window, Class<?> entityClass) {
        this.uiEntityActionManager = uiEntityActionManager;
        this.uiApplication = uiApplication;
        this.window = window;
        this.entityClass = entityClass;
        createComponent();
        window.addSelectionChangeListener(this);
        updateActions(window.getActiveTab().getSelectedObjects());
    }

    private void updateActions(List<UIBean> selectedObjects) {
        List<EntityAction<UIBean>> entityActionList = uiEntityActionManager.getEnabledActionsOrdered(entityClass,
                selectedObjects);
        mainPanel.removeAllComponents();
        String actualGroup = null;
        for (EntityAction<UIBean> action : entityActionList) {
            String group = action.getGroup();
            if (group != null && !group.equals(actualGroup)) {
                createHeader(group);
            }
            createAction(action);
        }
    }

    private void createAction(final EntityAction<UIBean> action) {
        ClickListener listener = new ClickListener() {

            private static final long serialVersionUID = 1L;

            @Override
            public void buttonClick(ClickEvent event) {
                if (window.getActiveTab().getActualView() == View.EDIT && window.getActiveTab().isModified()) {
                    window.getApplication().showConfirmation("The changes may be lost, are you sure?",
                            new ConfirmationCallback() {
                                @Override
                                public void onCloseConfirmation(boolean accepted) {
                                    if (accepted) {
                                        action.execute(window.getActiveTab().getSelectedObjects(), uiApplication);
                                        window.refresh(RefreshType.SELECTED);
                                    }
                                }
                            });
                } else {
                    action.execute(window.getActiveTab().getSelectedObjects(), uiApplication);
                    window.refresh(RefreshType.SELECTED);
                }

            }
        };
        HorizontalLayout horLayout = new HorizontalLayout();
        horLayout.setMargin(false);
        horLayout.setSpacing(false);
        horLayout.addComponent(new Label("&nbsp;", Label.CONTENT_XHTML));
        Button button = new Button(action.getName(), listener);
        button.addStyleName(Reindeer.BUTTON_LINK);
        horLayout.addComponent(button);
        mainPanel.addComponent(horLayout);
    }

    private void createHeader(String group) {
        Label label = new Label(group);
        //label.addStyleName(Reindeer.LABEL_SMALL);
        mainPanel.addComponent(label);
    }

    private void createComponent() {
        mainPanel = new Panel();
        mainPanel.setStyleName("background-default");
        mainPanel.setWidth(12, Component.UNITS_EM);
        mainPanel.setHeight(100, Component.UNITS_PERCENTAGE);
    }

    @Override
    public void selectionChange(SelectionChangeEvent selectionChangeEvent) {
        updateActions(window.getActiveTab().getSelectedObjects());
    }

    public Component getComponent() {
        return mainPanel;
    }

}