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

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Here is the source code for com.tasktop.c2c.server.tasks.client.widgets.admin.customfields.NewCustomFieldView.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.Arrays;

import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Element;
import com.google.gwt.editor.client.Editor;
import com.google.gwt.editor.client.SimpleBeanEditorDriver;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
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.client.ui.CheckBox;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HTMLPanel;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.UIObject;
import com.google.gwt.user.client.ui.ValueListBox;
import com.tasktop.c2c.server.tasks.client.widgets.admin.customfields.ICustomFieldsAdminView.Presenter;
import com.tasktop.c2c.server.tasks.domain.FieldDescriptor;
import com.tasktop.c2c.server.tasks.domain.FieldType;

/**
 * @author cmorgan (Tasktop Technologies Inc.)
 * 
 */
public class NewCustomFieldView extends Composite implements Editor<FieldDescriptor> {
    interface Binder extends UiBinder<HTMLPanel, NewCustomFieldView> {
    }

    interface Driver extends SimpleBeanEditorDriver<FieldDescriptor, NewCustomFieldView> {
    }

    private static Binder binder = GWT.create(Binder.class);
    private static Driver driver = GWT.create(Driver.class);
    private static NewCustomFieldView instance;

    @UiField
    protected TextBox name;
    @UiField
    protected TextBox description;
    @UiField(provided = true)
    protected ValueListBox<FieldType> fieldType = new ValueListBox<FieldType>(FieldTypeRender.getInstance());
    @UiField
    protected CheckBox availableForNewTasks;
    @UiField
    protected CustomFieldValuesEditor values;
    @UiField
    protected Element fieldValuesContainer;

    private Presenter presenter;

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

    private NewCustomFieldView() {
        initWidget(binder.createAndBindUi(this));
        driver.initialize(this);
        fieldType.addValueChangeHandler(new ValueChangeHandler<FieldType>() {

            @Override
            public void onValueChange(ValueChangeEvent<FieldType> event) {
                onFieldTypeChange(event.getValue());

            }
        });
    }

    public void setPresenter(Presenter presenter) {
        this.presenter = presenter;
    }

    public void setValue(FieldDescriptor field) {
        driver.edit(field);
        onFieldTypeChange(field.getFieldType());
        fieldType.setAcceptableValues(Arrays.asList(FieldType.values()));
    }

    private void onFieldTypeChange(FieldType value) {
        boolean showValues;
        switch (value) {
        case MULTI_SELECT:
        case SINGLE_SELECT:
            values.setValue(presenter.getNewCustomFieldsValues());
            showValues = true;
            break;
        default:
            showValues = false;
        }
        UIObject.setVisible(fieldValuesContainer, showValues);
    }

    @UiHandler("cancelButton")
    protected void onCancel(ClickEvent ce) {
        presenter.cancelNew();
    }

    @UiHandler("saveButton")
    protected void onSave(ClickEvent ce) {
        FieldDescriptor newField = driver.flush();
        presenter.createCustomField(newField);
    }

}