Improved behavior of back button in search ui.

Pressing the back button in the search UI now functions as follows:
 - If the keyboard is opened, the keyboard is minimized
 - If the dialpad is opened, the dialpad is closed
 - If the keyboard and dialpad is closed, the search ui is closed

Our existing behavior was dependent on whether a query had been built yet.
basically, if the user pressed back with no query selected, the search ui
was closed.

From the bugbash:
7. No scroll bar in the search results if the results do not fill the entire
view. The keyboard overlaps the results and there is no way to get to the
enter list without dismissing the keyboard.
10. Dismiss the keyboard on tapping the down arrow on the keyboard. Arrow
points down but works like back button

Bug: 64902476,64137632,62685859,63691995,63939331
Test: manual
PiperOrigin-RevId: 167332236
Change-Id: I1c0b5b429316dae119b5fb21be4303d7fe052e35

1 files changed, 41 insertions, 72 deletions

diff --git a/java/com/android/dialer/app/DialtactsActivity.java b/java/com/android/dialer/app/DialtactsActivity.java
index 74bc8cc33..fc557f0b6 100644
--- a/java/com/android/dialer/app/DialtactsActivity.java
+++ b/java/com/android/dialer/app/DialtactsActivity.java
@@ -49,7 +49,6 @@ import android.text.TextUtils;
 import android.text.TextWatcher;
 import android.view.DragEvent;
 import android.view.Gravity;
-import android.view.KeyEvent;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.MotionEvent;
@@ -169,6 +168,7 @@ public class DialtactsActivity extends TransactionSafeActivity
   private static final String TAG = "DialtactsActivity";
   private static final String KEY_IN_REGULAR_SEARCH_UI = "in_regular_search_ui";
   private static final String KEY_IN_DIALPAD_SEARCH_UI = "in_dialpad_search_ui";
+  private static final String KEY_IN_NEW_SEARCH_UI = "in_new_search_ui";
   private static final String KEY_SEARCH_QUERY = "search_query";
   private static final String KEY_FIRST_LAUNCH = "first_launch";
   private static final String KEY_WAS_CONFIGURATION_CHANGE = "was_configuration_change";
@@ -213,6 +213,8 @@ public class DialtactsActivity extends TransactionSafeActivity
    */
   private boolean mStateSaved;
 
+  private boolean mIsKeyboardOpen;
+  private boolean mInNewSearch;
   private boolean mIsRestarting;
   private boolean mInDialpadSearch;
   private boolean mInRegularSearch;
@@ -333,27 +335,6 @@ public class DialtactsActivity extends TransactionSafeActivity
 
   private int mActionBarHeight;
   private int mPreviouslySelectedTabIndex;
-  /** Handles the user closing the soft keyboard. */
-  private final View.OnKeyListener mSearchEditTextLayoutListener =
-      new View.OnKeyListener() {
-        @Override
-        public boolean onKey(View v, int keyCode, KeyEvent event) {
-          if (keyCode == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_DOWN) {
-            if (TextUtils.isEmpty(mSearchView.getText().toString())) {
-              // If the search term is empty, close the search UI.
-              PerformanceReport.recordClick(UiAction.Type.CLOSE_SEARCH_WITH_HIDE_BUTTON);
-              maybeExitSearchUi();
-            } else {
-              // If the search term is not empty, show the dialpad fab.
-              if (!mFloatingActionButtonController.isVisible()) {
-                PerformanceReport.recordClick(UiAction.Type.HIDE_KEYBOARD_IN_SEARCH);
-              }
-              showFabInSearchUi();
-            }
-          }
-          return false;
-        }
-      };
 
   /**
    * The text returned from a voice search query. Set in {@link #onActivityResult} and used in
@@ -413,30 +394,20 @@ public class DialtactsActivity extends TransactionSafeActivity
 
     SearchEditTextLayout searchEditTextLayout =
         actionBar.getCustomView().findViewById(R.id.search_view_container);
-    searchEditTextLayout.setPreImeKeyListener(mSearchEditTextLayoutListener);
 
     mActionBarController = new ActionBarController(this, searchEditTextLayout);
 
     mSearchView = searchEditTextLayout.findViewById(R.id.search_view);
     mSearchView.addTextChangedListener(mPhoneSearchQueryTextListener);
     mSearchView.setHint(getSearchBoxHint());
+
     mVoiceSearchButton = searchEditTextLayout.findViewById(R.id.voice_search_button);
     searchEditTextLayout
         .findViewById(R.id.search_box_collapsed)
         .setOnClickListener(mSearchViewOnClickListener);
-    searchEditTextLayout.setCallback(
-        new SearchEditTextLayout.Callback() {
-          @Override
-          public void onBackButtonClicked() {
-            onBackPressed();
-          }
-
-          @Override
-          public void onSearchViewClicked() {
-            // Hide FAB, as the keyboard is shown.
-            mFloatingActionButtonController.scaleOut();
-          }
-        });
+    searchEditTextLayout
+        .findViewById(R.id.search_back_button)
+        .setOnClickListener(v -> exitSearchUi());
 
     mIsLandscape =
         getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE;
@@ -463,6 +434,7 @@ public class DialtactsActivity extends TransactionSafeActivity
       mSearchQuery = savedInstanceState.getString(KEY_SEARCH_QUERY);
       mInRegularSearch = savedInstanceState.getBoolean(KEY_IN_REGULAR_SEARCH_UI);
       mInDialpadSearch = savedInstanceState.getBoolean(KEY_IN_DIALPAD_SEARCH_UI);
+      mInNewSearch = savedInstanceState.getBoolean(KEY_IN_NEW_SEARCH_UI);
       mFirstLaunch = savedInstanceState.getBoolean(KEY_FIRST_LAUNCH);
       mWasConfigurationChange = savedInstanceState.getBoolean(KEY_WAS_CONFIGURATION_CHANGE);
       mShowDialpadOnResume = savedInstanceState.getBoolean(KEY_IS_DIALPAD_SHOWN);
@@ -657,6 +629,7 @@ public class DialtactsActivity extends TransactionSafeActivity
     outState.putString(KEY_SEARCH_QUERY, mSearchQuery);
     outState.putBoolean(KEY_IN_REGULAR_SEARCH_UI, mInRegularSearch);
     outState.putBoolean(KEY_IN_DIALPAD_SEARCH_UI, mInDialpadSearch);
+    outState.putBoolean(KEY_IN_NEW_SEARCH_UI, mInNewSearch);
     outState.putBoolean(KEY_FIRST_LAUNCH, mFirstLaunch);
     outState.putBoolean(KEY_IS_DIALPAD_SHOWN, mIsDialpadShown);
     outState.putBoolean(KEY_WAS_CONFIGURATION_CHANGE, isChangingConfigurations());
@@ -896,14 +869,19 @@ public class DialtactsActivity extends TransactionSafeActivity
     updateSearchFragmentPosition();
   }
 
+  @Override
+  public void onCallPlacedFromDialpad() {
+    hideDialpadFragment(false /* animate */, true /*clearDialpad */);
+    exitSearchUi();
+  }
+
   /**
    * Initiates animations and other visual updates to hide the dialpad. The fragment is hidden in a
    * callback after the hide animation ends.
    *
    * @see #commitDialpadFragmentHide
    */
-  @Override
-  public void hideDialpadFragment(boolean animate, boolean clearDialpad) {
+  private void hideDialpadFragment(boolean animate, boolean clearDialpad) {
     LogUtil.enterBlock("DialtactsActivity.hideDialpadFragment");
     if (mDialpadFragment == null || mDialpadFragment.getView() == null) {
       return;
@@ -938,11 +916,6 @@ public class DialtactsActivity extends TransactionSafeActivity
 
     mActionBarController.onDialpadDown();
 
-    if (isInSearchUi()) {
-      if (TextUtils.isEmpty(mSearchQuery)) {
-        exitSearchUi();
-      }
-    }
     // reset the title to normal.
     setTitle(R.string.launcherActivityLabel);
   }
@@ -990,7 +963,7 @@ public class DialtactsActivity extends TransactionSafeActivity
 
   @Override
   public boolean isInSearchUi() {
-    return mInDialpadSearch || mInRegularSearch;
+    return mInDialpadSearch || mInRegularSearch || mInNewSearch;
   }
 
   @Override
@@ -1001,6 +974,7 @@ public class DialtactsActivity extends TransactionSafeActivity
   private void setNotInSearchUi() {
     mInDialpadSearch = false;
     mInRegularSearch = false;
+    mInNewSearch = false;
   }
 
   private void hideDialpadAndSearchUi() {
@@ -1174,17 +1148,21 @@ public class DialtactsActivity extends TransactionSafeActivity
     }
 
     final String tag;
+    mInDialpadSearch = false;
+    mInRegularSearch = false;
+    mInNewSearch = false;
     boolean useNewSearch =
         ConfigProviderBindings.get(this).getBoolean("enable_new_search_fragment", false);
     if (useNewSearch) {
       tag = TAG_NEW_SEARCH_FRAGMENT;
+      mInNewSearch = true;
     } else if (smartDialSearch) {
       tag = TAG_SMARTDIAL_SEARCH_FRAGMENT;
+      mInDialpadSearch = true;
     } else {
       tag = TAG_REGULAR_SEARCH_FRAGMENT;
+      mInRegularSearch = true;
     }
-    mInDialpadSearch = smartDialSearch;
-    mInRegularSearch = !smartDialSearch;
 
     mFloatingActionButtonController.scaleOut();
 
@@ -1308,43 +1286,34 @@ public class DialtactsActivity extends TransactionSafeActivity
       return;
     }
     if (mIsDialpadShown) {
-      if (TextUtils.isEmpty(mSearchQuery)
-          || (mSmartDialSearchFragment != null
-              && mSmartDialSearchFragment.isVisible()
-              && mSmartDialSearchFragment.getAdapter().getCount() == 0)) {
-        exitSearchUi();
-      }
       hideDialpadFragment(true, false);
     } else if (isInSearchUi()) {
-      exitSearchUi();
-      DialerUtils.hideInputMethod(mParentLayout);
+      if (mIsKeyboardOpen) {
+        DialerUtils.hideInputMethod(mParentLayout);
+        PerformanceReport.recordClick(UiAction.Type.HIDE_KEYBOARD_IN_SEARCH);
+      } else {
+        exitSearchUi();
+      }
     } else {
       super.onBackPressed();
     }
   }
 
-  private void maybeEnterSearchUi() {
-    if (!isInSearchUi()) {
-      enterSearchUi(true /* isSmartDial */, mSearchQuery, false);
+  @Override
+  public void onConfigurationChanged(Configuration configuration) {
+    super.onConfigurationChanged(configuration);
+    // Checks whether a hardware keyboard is available
+    if (configuration.hardKeyboardHidden == Configuration.HARDKEYBOARDHIDDEN_NO) {
+      mIsKeyboardOpen = true;
+    } else if (configuration.hardKeyboardHidden == Configuration.HARDKEYBOARDHIDDEN_YES) {
+      mIsKeyboardOpen = false;
     }
   }
 
-  /** @return True if the search UI was exited, false otherwise */
-  private boolean maybeExitSearchUi() {
-    if (isInSearchUi() && TextUtils.isEmpty(mSearchQuery)) {
-      exitSearchUi();
-      DialerUtils.hideInputMethod(mParentLayout);
-      return true;
+  private void maybeEnterSearchUi() {
+    if (!isInSearchUi()) {
+      enterSearchUi(true /* isSmartDial */, mSearchQuery, false);
     }
-    return false;
-  }
-
-  private void showFabInSearchUi() {
-    mFloatingActionButtonController.changeIcon(
-        getResources().getDrawable(R.drawable.quantum_ic_dialpad_white_24, null),
-        getResources().getString(R.string.action_menu_dialpad_button));
-    mFloatingActionButtonController.align(getFabAlignment(), false /* animate */);
-    mFloatingActionButtonController.scaleIn(FAB_SCALE_IN_DELAY_MS);
   }
 
   @Override