com.tasktop.c2c.server.tasks.client.widgets.admin.customfields.CustomFieldsMenu.java Source code

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Here is the source code for com.tasktop.c2c.server.tasks.client.widgets.admin.customfields.CustomFieldsMenu.java

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/*******************************************************************************
 * Copyright (c) 2010, 2012 Tasktop Technologies
 * Copyright (c) 2010, 2011 SpringSource, a division of VMware
 * 
 * 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:
 *     Tasktop Technologies - initial API and implementation
 ******************************************************************************/
package com.tasktop.c2c.server.tasks.client.widgets.admin.customfields;

import java.util.List;

import com.google.gwt.cell.client.AbstractCell;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.safehtml.shared.SafeHtmlUtils;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.uibinder.client.UiHandler;
import com.google.gwt.user.cellview.client.CellList;
import com.google.gwt.user.client.ui.Anchor;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HTMLPanel;
import com.google.gwt.view.client.SelectionChangeEvent;
import com.google.gwt.view.client.SingleSelectionModel;
import com.tasktop.c2c.server.tasks.client.widgets.admin.customfields.ICustomFieldsAdminView.Presenter;
import com.tasktop.c2c.server.tasks.domain.FieldDescriptor;

public class CustomFieldsMenu extends Composite {

    interface Binder extends UiBinder<HTMLPanel, CustomFieldsMenu> {
    }

    private static CustomFieldsMenu instance;;

    public static CustomFieldsMenu getInstance() {
        if (instance == null) {
            instance = new CustomFieldsMenu();
        }
        return instance;
    }

    private static Binder ourUiBinder = GWT.create(Binder.class);

    @UiField(provided = true)
    protected CellList<FieldDescriptor> fieldList;
    @UiField
    protected Anchor newField;
    protected Resources resources = GWT.create(Resources.class);
    private Presenter presenter;

    public interface Resources extends CellList.Resources {

        @Override
        @Source("field-menu.css")
        Style cellListStyle();
    }

    public interface Style extends CellList.Style {
    }

    public void setPresenterAndUpdateDisplay(Presenter presenter) {
        this.presenter = presenter;
        List<FieldDescriptor> products = presenter.getCustomFields();

        fieldList.setRowData(products);
        for (FieldDescriptor fd : products) {
            fieldList.getSelectionModel().setSelected(fd, false);
        }
    }

    private CustomFieldsMenu() {
        fieldList = new CellList<FieldDescriptor>(new FieldCell(), resources);
        final SingleSelectionModel<FieldDescriptor> selectionModel = new SingleSelectionModel<FieldDescriptor>();
        selectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
            @Override
            public void onSelectionChange(SelectionChangeEvent event) {
                if (selectionModel.getSelectedObject() != null) {
                    presenter.edit(selectionModel.getSelectedObject());
                }
            }
        });

        fieldList.setSelectionModel(selectionModel);
        initWidget(ourUiBinder.createAndBindUi(this));
    }

    public static class FieldCell extends AbstractCell<FieldDescriptor> {
        @Override
        public void render(Context context, FieldDescriptor value, SafeHtmlBuilder sb) {
            sb.append(SafeHtmlUtils.fromString(value.getDescription()));
        }
    }

    @UiHandler("newField")
    void onNewField(ClickEvent event) {
        presenter.newCustomField();
    }
}