[Smart Lock] Auto sign-in snackbar UI.

chrome/android/java/src/org/chromium/chrome/browser/snackbar/smartlockautosignin/AutoSigninSnackbarController.java

Index: chrome/android/java/src/org/chromium/chrome/browser/snackbar/smartlockautosignin/AutoSigninSnackbarController.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/snackbar/smartlockautosignin/AutoSigninSnackbarController.java b/chrome/android/java/src/org/chromium/chrome/browser/snackbar/smartlockautosignin/AutoSigninSnackbarController.java
new file mode 100644
index 0000000000000000000000000000000000000000..f25df93927f80bf77bedc755767434098e3202ee
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/snackbar/smartlockautosignin/AutoSigninSnackbarController.java
@@ -0,0 +1,102 @@
+// Copyright 2015 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.snackbar.smartlockautosignin;
+
+import android.content.Context;
+
+import org.chromium.base.annotations.CalledByNative;
+import org.chromium.chrome.R;
+import org.chromium.chrome.browser.snackbar.Snackbar;
+import org.chromium.chrome.browser.snackbar.SnackbarManager;
+import org.chromium.chrome.browser.tab.EmptyTabObserver;
+import org.chromium.chrome.browser.tab.Tab;
+import org.chromium.chrome.browser.tab.TabObserver;
+
+/**
+ * A controller that triggers an auto sign-in snackbar. Auto sign-in snackbar is
+ * triggered on a request credentials call of a Credential Manager API.
+ */
+public class AutoSigninSnackbarController
+        implements SnackbarManager.SnackbarController {
+
+    private final SnackbarManager mSnackbarManager;
+    private final Context mContext;
+    private final TabObserver mTabObserver;
+    private final Tab mTab;
+    private final long mNativePtr;
+
+    @CalledByNative
+    public static AutoSigninSnackbarController create(Tab tab, long nativePtr) {

[newt (away), 2015/08/21 05:40:39]

Make this private. Same for the other methods in this class that are only called
by the native side of this object.

[melandory, 2015/08/21 09:41:15]

Done.

+        return new AutoSigninSnackbarController(tab, nativePtr);
+    }
+
+    /**
+     * Creates an instance of a {@link AutoSigninSnackbarController}.
+     * @param context The {@link Context} in which snackbar is shown.
+     * @param snackbarManager The manager that helps to show up snackbar.
+     */
+    public AutoSigninSnackbarController(Tab tab, long nativePtr) {
+        mTab = tab;
+        mSnackbarManager = (SnackbarManager) tab.getSnackbarManager();

[newt (away), 2015/08/21 05:40:39]

don't use cast; fix the return type of getSnackbarManager() instead.

[melandory, 2015/08/21 09:41:15]

Done.

+        mContext = mTab.getWindowAndroid().getApplicationContext();
+        mTabObserver = new EmptyTabObserver() {
+            @Override
+            public void onHidden(Tab tab) {
+                AutoSigninSnackbarController.this.dismissAutoSigninSnackbar();
+            }
+
+            @Override
+            public void onDestroyed(Tab tab) {
+                AutoSigninSnackbarController.this.dismissAutoSigninSnackbar();
+            }
+
+            @Override
+            public void onCrash(Tab tab, boolean sadTabShown) {
+                AutoSigninSnackbarController.this.dismissAutoSigninSnackbar();
+            }
+        };
+        mTab.addObserver(mTabObserver);
+        mNativePtr = nativePtr;
+    }
+
+    /**
+     * Displays Auto sign-in snackbar, which communicates to the users that they
+     * were signed in to the web site. Displays the |username| in the message.
+     */
+    @CalledByNative
+    public void show(String username) {
+        String text =
+                mContext.getString(R.string.passwords_auto_signin_message);
+        mSnackbarManager.showSnackbar(
+                Snackbar.make(username, this).setTemplateText(text));
+    }
+
+    @Override
+    public void onAction(Object actionData) {}

[newt (away), 2015/08/21 05:40:39]

group all the SnackbarController methods together

[melandory, 2015/08/21 09:41:15]

Done.

+
+    /**
+     * Dismisses the snackbar.
+     */
+    public void dismissAutoSigninSnackbar() {
+        if (mSnackbarManager.isShowing()) {
+            mSnackbarManager.removeMatchingSnackbars(this);
+        }
+    }
+
+    @Override
+    public void onDismissNoAction(Object actionData) {}
+
+    @Override
+    public void onDismissForEachType(boolean isTimeout) {
+        onShutDown();
+    }
+
+    private void onShutDown() {

[newt (away), 2015/08/21 05:40:39]

I'd call this "onDismiss". "shutdown" typically refers to the entire program
shutting down. "dismiss" is the common terminology for windows, snackbars, or
other UI elements going away.

[melandory, 2015/08/21 09:41:15]

Don't need the method anymore, but thank for clarification.

+        mTab.removeObserver(mTabObserver);
+        nativeDestroy(mNativePtr);
+    }
+
+    private native void nativeDestroy(long nativeAutoSigninSnackbarController);
+}