bikeshed/src/com/google/gwt/sample/expenses/gwt/ui/employee/EmployeeEditView.java

/*
 * Copyright 2010 Google Inc.
 * 
 * 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 com.google.gwt.sample.expenses.gwt.ui.employee;

import com.google.gwt.app.client.EditorSupport;
import com.google.gwt.app.place.RecordEditView;
import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.DivElement;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.Style.Display;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.sample.expenses.gwt.request.EmployeeRecord;
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.Button;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.HTMLPanel;
import com.google.gwt.user.client.ui.InlineLabel;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.ValueListBox;

import java.util.Collection;
import java.util.Map;

/**
 * Edit view for employee records.
 */
public class EmployeeEditView extends Composite implements
    RecordEditView<EmployeeRecord> {
  interface Binder extends UiBinder<HTMLPanel, EmployeeEditView> {
  }

  interface DataBinder extends EditorSupport<EmployeeRecord, EmployeeEditView> {
  }

  private static final Binder BINDER = GWT.create(Binder.class);
  private static final DataBinder DATA_BINDER = GWT.create(DataBinder.class);

  @UiField
  TextBox displayName;
  @UiField
  TextBox password;
  @UiField(provided = true)
  ValueListBox<EmployeeRecord> supervisor = new ValueListBox<EmployeeRecord>(
      EmployeeRenderer.instance());

  @UiField
  TextBox userName;
  @UiField
  Button cancel;
  @UiField
  Button save;
  @UiField
  InlineLabel id;
  @UiField
  InlineLabel version;
  @UiField
  DivElement errors;

  @UiField
  Element editTitle;
  @UiField
  Element createTitle;

  private Delegate delegate;
  private EmployeeRecord record;

  public EmployeeEditView() {
    initWidget(BINDER.createAndBindUi(this));
    DATA_BINDER.init(this);
  }

  public EmployeeEditView asWidget() {
    return this;
  }

  public String[] getPaths() {
    return DATA_BINDER.getPaths();
  }

  public EmployeeRecord getValue() {
    return record;
  }

  public boolean isChanged() {
    return DATA_BINDER.isChanged(this);
  }

  public void setCreating(boolean creating) {
    if (creating) {
      editTitle.getStyle().setDisplay(Display.NONE);
      createTitle.getStyle().clearDisplay();
    } else {
      editTitle.getStyle().clearDisplay();
      createTitle.getStyle().setDisplay(Display.NONE);
    }
  }

  public void setDelegate(Delegate delegate) {
    this.delegate = delegate;
  }

  public void setEmployeePickerValues(Collection<EmployeeRecord> values) {
    supervisor.setAcceptableValues(values);
  }

  public void setEnabled(boolean enabled) {
    DATA_BINDER.setEnabled(this, enabled);
    save.setEnabled(enabled);
  }

  public void setValue(EmployeeRecord value) {
    this.record = value;
    DATA_BINDER.setValue(this, value);
  }

  public void showErrors(Map<String, String> errorMap) {
    DATA_BINDER.showErrors(this, errorMap);
  }

  @UiHandler("cancel")
  void onCancel(@SuppressWarnings("unused") ClickEvent event) {
    delegate.cancelClicked();
  }

  @UiHandler("save")
  void onSave(@SuppressWarnings("unused") ClickEvent event) {
    delegate.saveClicked();
  }
}