// Copyright (C) 2008 The Android Open Source Project
//
// 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.gerrit.client;

import com.google.gerrit.client.openid.OpenIdLoginPanel;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.Widget;
import com.google.gwtexpui.user.client.AutoCenterDialogBox;

/** Prompts the user to sign in to their account. */
public class SignInDialog extends AutoCenterDialogBox {
  public static enum Mode {
    SIGN_IN, LINK_IDENTIY, REGISTER;
  }

  private Widget panel;

  /**
   * Create a new dialog to handle user sign in.
   */
  public SignInDialog() {
    this(Mode.SIGN_IN);
  }

  /**
   * Create a new dialog to handle user sign in.
   *
   * @param signInMode type of mode the login will perform.
   */
  public SignInDialog(final Mode signInMode) {
    this(signInMode, null);
  }

  /**
   * Create a new dialog to handle user sign in.
   *
   * @param signInMode type of mode the login will perform.
   * @param errorMsg error message to display, if non-null.
   */
  public SignInDialog(final Mode signInMode, final String errorMsg) {
    super(/* auto hide */true, /* modal */true);

    switch (Gerrit.getConfig().getAuthType()) {
      case OPENID:
        panel = new OpenIdLoginPanel(signInMode, errorMsg);
        break;

      default: {
        final FlowPanel fp = new FlowPanel();
        fp.add(new Label(Gerrit.C.loginTypeUnsupported()));
        panel = fp;
        break;
      }
    }
    add(panel);

    switch (signInMode) {
      case LINK_IDENTIY:
        setText(Gerrit.C.linkIdentityDialogTitle());
        break;
      case REGISTER:
        setText(Gerrit.C.registerDialogTitle());
        break;
      default:
        setText(Gerrit.C.signInDialogTitle());
        break;
    }
  }

  @Override
  public void show() {
    super.show();
    if (panel instanceof OpenIdLoginPanel) {
      ((OpenIdLoginPanel) panel).setFocus(true);
    }
  }
}