org.lunifera.mobile.vaadin.ecview.presentation.internal.NavigationBarButtonPresentation.java Source code

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Here is the source code for org.lunifera.mobile.vaadin.ecview.presentation.internal.NavigationBarButtonPresentation.java

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/**
 * Copyright (c) 2013 COMPEX Systemhaus GmbH Heidelberg. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors: Jose C. Dominguez - initial API and implementation
 */
package org.lunifera.mobile.vaadin.ecview.presentation.internal;

import java.util.Locale;

import org.lunifera.ecview.core.common.editpart.IElementEditpart;
import org.lunifera.mobile.vaadin.ecview.editparts.INavigationBarButtonEditpart;
import org.lunifera.mobile.vaadin.ecview.model.VMNavigationBarButton;
import org.lunifera.mobile.vaadin.ecview.model.VaadinMobilePackage;
import org.lunifera.runtime.web.ecview.presentation.vaadin.internal.AbstractVaadinWidgetPresenter;
import org.lunifera.runtime.web.ecview.presentation.vaadin.internal.util.Util;

import com.vaadin.ui.Button;
import com.vaadin.ui.Component;
import com.vaadin.ui.ComponentContainer;

/**
 * This presenter is responsible to render a text field on the given layout.
 */
@SuppressWarnings("restriction")
public class NavigationBarButtonPresentation extends AbstractVaadinWidgetPresenter<Component> {

    private final ModelAccess modelAccess;
    private Button button;

    /**
     * Constructor.
     * 
     * @param editpart
     *            The editpart of that presenter
     */
    public NavigationBarButtonPresentation(IElementEditpart editpart) {
        super((INavigationBarButtonEditpart) editpart);
        this.modelAccess = new ModelAccess((VMNavigationBarButton) editpart.getModel());
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public Component doCreateWidget(Object parent) {
        if (button == null) {

            button = new Button();
            button.addStyleName(CSS_CLASS_CONTROL);
            button.setImmediate(true);
            setupComponent(button, getCastedModel());

            associateWidget(button, modelAccess.yField);

            if (modelAccess.isCssIdValid()) {
                button.setId(modelAccess.getCssID());
            } else {
                button.setId(getEditpart().getId());
            }

            // creates the binding for the field
            createBindings(modelAccess.yField, button);

            if (modelAccess.isCssClassValid()) {
                button.addStyleName(modelAccess.getCssClass());
            }

            applyCaptions();

        }
        return button;
    }

    @Override
    protected void doUpdateLocale(Locale locale) {
        // no need to set the locale to the ui elements. Is handled by vaadin
        // internally.

        // update the captions
        applyCaptions();
    }

    /**
     * Applies the labels to the widgets.
     */
    protected void applyCaptions() {
        Util.applyCaptions(getI18nService(), modelAccess.getLabel(), modelAccess.getLabelI18nKey(), getLocale(),
                button);
    }

    /**
     * Creates the bindings for the given values.
     * 
     * @param yField
     * @param button
     */
    protected void createBindings(final VMNavigationBarButton yField, Button button) {
        registerBinding(createBindingsButtonClick(castEObject(getModel()),
                VaadinMobilePackage.Literals.VM_NAVIGATION_BAR_BUTTON__LAST_CLICK_TIME, button));

        super.createBindings(yField, button, null);

    }

    @Override
    public Component getWidget() {
        return button;
    }

    @Override
    public boolean isRendered() {
        return button != null;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void doUnrender() {
        if (button != null) {

            // unbind all active bindings
            unbind();

            ComponentContainer parent = ((ComponentContainer) button.getParent());
            if (parent != null) {
                parent.removeComponent(button);
            }

            // remove assocations
            unassociateWidget(button);

            button = null;
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected void internalDispose() {
        try {
            unrender();
        } finally {
            super.internalDispose();
        }
    }

    /**
     * A helper class.
     */
    private static class ModelAccess {
        private final VMNavigationBarButton yField;

        public ModelAccess(VMNavigationBarButton yField) {
            super();
            this.yField = yField;
        }

        /**
         * @return
         * @see org.lunifera.ecview.core.ui.core.model.core.YCssAble#getCssClass()
         */
        public String getCssClass() {
            return yField.getCssClass();
        }

        /**
         * Returns true, if the css class is not null and not empty.
         * 
         * @return
         */
        public boolean isCssClassValid() {
            return getCssClass() != null && !getCssClass().equals("");
        }

        /**
         * @return
         * @see org.lunifera.ecview.core.ui.core.model.core.YCssAble#getCssID()
         */
        public String getCssID() {
            return yField.getCssID();
        }

        /**
         * Returns true, if the css id is not null and not empty.
         * 
         * @return
         */
        public boolean isCssIdValid() {
            return getCssID() != null && !getCssID().equals("");
        }

        /**
         * Returns the label.
         * 
         * @return
         */
        public String getLabel() {
            return yField.getDatadescription() != null ? yField.getDatadescription().getLabel() : null;
        }

        /**
         * Returns the label.
         * 
         * @return
         */
        public String getLabelI18nKey() {
            return yField.getDatadescription() != null ? yField.getDatadescription().getLabelI18nKey() : null;
        }
    }
}