MainPageViewImpl.java

/*******************************************************************************
 * Copyright (c) 2012-2017 Codenvy, S.A.
 * 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:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.eclipse.che.ide.projectimport.wizard.mainpage;

import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Document;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.SpanElement;
import com.google.gwt.resources.client.CssResource;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.user.client.ui.AcceptsOneWidget;
import com.google.gwt.user.client.ui.DockLayoutPanel;
import com.google.gwt.user.client.ui.HTMLPanel;
import com.google.gwt.user.client.ui.SimplePanel;
import com.google.gwt.user.client.ui.Widget;
import com.google.inject.Inject;

import org.eclipse.che.api.project.shared.dto.ProjectImporterDescriptor;
import org.eclipse.che.ide.Resources;
import org.eclipse.che.ide.ui.list.CategoriesList;
import org.eclipse.che.ide.ui.list.Category;
import org.eclipse.che.ide.ui.list.CategoryRenderer;

import javax.validation.constraints.NotNull;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;

/**
 * UI implementation for {@link MainPageView}.
 *
 * @author Ann Shumilova
 */
public class MainPageViewImpl implements MainPageView {

    private static MainPageViewImplUiBinder uiBinder = GWT.create(MainPageViewImplUiBinder.class);
    private final DockLayoutPanel rootElement;
    private final CategoryRenderer<ProjectImporterDescriptor> projectImporterRenderer = new CategoryRenderer<ProjectImporterDescriptor>() {
        @Override
        public void renderElement(Element element, ProjectImporterDescriptor data) {
            element.setInnerText(data.getId().toUpperCase());
        }

        @Override
        public SpanElement renderCategory(Category<ProjectImporterDescriptor> category) {
            SpanElement textElement = Document.get().createSpanElement();
            textElement.setClassName(resources.defaultCategoriesListCss().headerText());
            textElement.setInnerText(category.getTitle());
            return textElement;
        }
    };

    @UiField
    Style       style;
    @UiField
    SimplePanel importerPanel;
    @UiField
    SimplePanel categoriesPanel;
    @UiField
    HTMLPanel   descriptionArea;
    @UiField(provided = true)
    Resources   resources;

    private CategoriesList list;
    private ActionDelegate delegate;
    private final Category.CategoryEventDelegate<ProjectImporterDescriptor> projectImporterDelegate =
            new Category.CategoryEventDelegate<ProjectImporterDescriptor>() {
                @Override
                public void onListItemClicked(Element listItemBase,
                                              ProjectImporterDescriptor itemData) {
                    delegate.projectImporterSelected(itemData);
                }
            };

    @Inject
    public MainPageViewImpl(Resources resources) {
        this.resources = resources;
        rootElement = uiBinder.createAndBindUi(this);
    }

    @Override
    public void reset() {
        categoriesPanel.clear();
        list = new CategoriesList(resources);
        categoriesPanel.add(list);
    }

    @Override
    public void setDelegate(ActionDelegate delegate) {
        this.delegate = delegate;
    }

    @Override
    public Widget asWidget() {
        return rootElement;
    }

    /** {@inheritDoc} */
    @Override
    public void setImporters(Map<String, Set<ProjectImporterDescriptor>> categories) {
        List<Category<?>> categoriesList = new ArrayList<>();
        for (Entry<String, Set<ProjectImporterDescriptor>> entry : categories.entrySet()) {
            categoriesList.add(new Category<>(entry.getKey(),
                                              projectImporterRenderer,
                                              entry.getValue(),
                                              projectImporterDelegate));
        }

        list.render(categoriesList, true);
    }

    @Override
    public AcceptsOneWidget getImporterPanel() {
        return importerPanel;
    }

    /** {@inheritDoc} */
    @Override
    public void selectImporter(ProjectImporterDescriptor importer) {
        list.selectElement(importer);
    }

    @Override
    public void setImporterDescription(@NotNull String text) {
        descriptionArea.getElement().setInnerText(text);
    }

    interface MainPageViewImplUiBinder extends UiBinder<DockLayoutPanel, MainPageViewImpl> {
    }

    interface Style extends CssResource {
        String mainPanel();

        String leftPart();

        String rightPart();

        String categories();
    }
}