Add progress and timeout dialogs for getting account management policy

chrome/android/java/src/org/chromium/chrome/browser/signin/ConfirmSyncDataStateMachineDelegate.java

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.signin;
+
+import android.app.Dialog;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.support.v7.app.AlertDialog;
+
+import org.chromium.chrome.R;
+
+/**
+ * Class to decouple ConfirmSyncDataStateMachine from UI code and dialog management.
+ */
+public class ConfirmSyncDataStateMachineDelegate {

[Bernhard Bauer, 2017/03/28 14:19:21]

Nit: I'm not sure delegate is the best name for this -- a class that creates its
own delegate doesn't really delegate any logic to it. Maybe ...DialogHandler?

[bsazonov, 2017/03/29 13:05:05]

Actually, I was thinking of adding mock delegate to test
ConfirmSyncDataStateMachine in the future. WDYT?

[Bernhard Bauer, 2017/03/29 15:01:58]

Okay, then we could start to really decouple the two classes -- maybe create an
interface inside of ConfirmSyncDataStateMachine and have the dialog class
implement it. Right now the two classes are pretty closely coupled, if only
because of the name :)

+    /**
+     * Listener to receive events from progress dialog. If the dialog is not dismissed by calling
+     * {@link ConfirmSyncDataStateMachineDelegate#dismissFetchManagementPolicyProgressDialog}, then
+     * {@link #onCancel} will be called once.
+     */
+    public interface ProgressDialogListener {
+        /**
+         * This method is called when user cancels the dialog in any way.
+         */
+        void onCancel();
+    }
+
+    /**
+     * Listener to receive events from timeout dialog. If the dialog is not dismissed by calling
+     * {@link ConfirmSyncDataStateMachineDelegate#dismissFetchManagementPolicyTimeoutDialog}, then
+     * either {@link #onCancel} or {@link #onRetry} will be called once.
+     */
+    public interface TimeoutDialogListener {
+        /**
+         * This method is called when user cancels the dialog in any way.
+         */
+        void onCancel();
+
+        /**
+         * This method is called when user clicks retry button.
+         */
+        void onRetry();
+    }
+
+    private final Context mContext;
+
+    private Dialog mProgressDialog;
+    private AlertDialog mTimeoutAlertDialog;
+
+    public ConfirmSyncDataStateMachineDelegate(Context context) {
+        mContext = context;
+    }
+
+    /**
+     * Shows progress dialog. Will dismiss previous progress dialog, if any.
+     *
+     * @param listener The {@link ProgressDialogListener} that will be notified about user actions.
+     */
+    public void showFetchManagementPolicyProgressDialog(final ProgressDialogListener listener) {
+        dismissFetchManagementPolicyProgressDialog();
+        mProgressDialog = new AlertDialog.Builder(mContext, R.style.AlertDialogTheme)
+                                  .setView(R.layout.signin_progress_bar_dialog)
+                                  .setNegativeButton(R.string.cancel,
+                                          new DialogInterface.OnClickListener() {
+                                              @Override
+                                              public void onClick(DialogInterface dialog, int i) {
+                                                  dialog.cancel();
+                                              }
+                                          })
+                                  .setOnCancelListener(new DialogInterface.OnCancelListener() {
+                                      @Override
+                                      public void onCancel(DialogInterface dialog) {
+                                          listener.onCancel();
+                                      }
+                                  })
+                                  .create();
+        mProgressDialog.show();
+    }
+
+    /**
+     * Dismisses progress dialog.
+     */
+    public void dismissFetchManagementPolicyProgressDialog() {
+        if (mProgressDialog != null) mProgressDialog.dismiss();
+        mProgressDialog = null;
+    }
+
+    /**
+     * Shows timeout dialog. Will dismiss previous timeout dialog, if any.
+     *
+     * @param listener The {@link TimeoutDialogListener} that will be notified about user actions.
+     */
+    public void showFetchManagementPolicyTimeoutDialog(final TimeoutDialogListener listener) {
+        dismissFetchManagementPolicyTimeoutDialog();
+        mTimeoutAlertDialog =
+                new AlertDialog.Builder(mContext, R.style.AlertDialogTheme)
+                        .setTitle(R.string.sign_in_timeout_title)
+                        .setMessage(R.string.sign_in_timeout_message)
+                        .setNegativeButton(R.string.cancel,
+                                new DialogInterface.OnClickListener() {
+                                    @Override
+                                    public void onClick(DialogInterface dialog, int which) {
+                                        dialog.cancel();
+                                    }
+                                })
+                        .setPositiveButton(R.string.retry,
+                                new DialogInterface.OnClickListener() {
+                                    @Override
+                                    public void onClick(DialogInterface dialog, int which) {
+                                        listener.onRetry();
+                                    }
+                                })
+                        .setOnCancelListener(new DialogInterface.OnCancelListener() {
+                            @Override
+                            public void onCancel(DialogInterface dialog) {
+                                listener.onCancel();
+                            }
+                        })
+                        .create();
+        mTimeoutAlertDialog.show();
+    }
+
+    /**
+     * Dismisses timeout dialog.
+     */
+    public void dismissFetchManagementPolicyTimeoutDialog() {
+        if (mTimeoutAlertDialog != null) mTimeoutAlertDialog.dismiss();
+        mTimeoutAlertDialog = null;
+    }
+}