Improve search bar visibility

res/drawable/search_toolbar_shadow.xml

@@ -0,0 +1,7 @@
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+       android:shape="rectangle">
+    <gradient
+            android:startColor="@android:color/transparent"
+            android:endColor="#40000000"
+            android:angle="90" />
+</shape>

res/layout/conversation_list_activity.xml

@@ -1,13 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-              xmlns:tools="http://schemas.android.com/tools"
-              android:id="@id/container"
-              android:orientation="vertical"
-              android:layout_width="match_parent"
-              android:layout_height="match_parent">
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+                xmlns:tools="http://schemas.android.com/tools"
+                android:id="@id/container"
+                android:orientation="vertical"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent">
 
     <android.support.v7.widget.Toolbar
             android:id="@+id/toolbar"
+            android:layout_alignParentTop="true"
             android:layout_width="match_parent"
             android:layout_height="?attr/actionBarSize"
             android:minHeight="?attr/actionBarSize"
@@ -18,10 +19,10 @@
                 android:layout_width="match_parent"
                 android:layout_height="match_parent">
 
-
             <ImageView android:layout_width="36dp"
                        android:layout_height="36dp"
                        android:layout_marginLeft="8dp"
+                       android:layout_marginStart="8dp"
                        android:src="@drawable/icon_transparent"
                        android:layout_alignParentLeft="true"
                        android:layout_alignParentStart="true"
@@ -35,20 +36,36 @@
                       android:layout_alignParentStart="true"
                       android:layout_alignParentLeft="true"
                       android:layout_centerVertical="true"
+                      android:layout_toLeftOf="@+id/search_action"
+                      android:layout_toStartOf="@+id/search_action"
+                      android:layout_marginStart="66dp"
                       android:layout_marginLeft="66dp"/>
 
+            <ImageView android:id="@+id/search_action"
+                       android:layout_width="wrap_content"
+                       android:layout_height="wrap_content"
+                       android:src="@drawable/ic_search_white_24dp"
+                       android:paddingRight="16dp"
+                       android:paddingEnd="16dp"
+                       android:layout_alignParentRight="true"
+                       android:layout_alignParentEnd="true"
+                       android:layout_centerVertical="true"/>
+
         </RelativeLayout>
 
     </android.support.v7.widget.Toolbar>
 
     <FrameLayout android:id="@+id/fragment_container"
+                 android:layout_below="@id/toolbar"
                  android:layout_width="match_parent"
                  android:layout_height="match_parent"/>
 
-    <!--<fragment android:id="@+id/fragment"-->
-              <!--android:name="org.thoughtcrime.securesms.ConversationListFragment"-->
-              <!--android:layout_width="match_parent"-->
-              <!--android:layout_height="match_parent"-->
-              <!--tools:layout="@layout/conversation_list_fragment"/>-->
+    <org.thoughtcrime.securesms.components.SearchToolbar
+            android:id="@+id/search_toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_alignParentTop="true"
+            android:visibility="invisible"
+            tools:visibility="visible"/>
 
-</LinearLayout>
+</RelativeLayout>

res/layout/search_toolbar.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<merge xmlns:android="http://schemas.android.com/apk/res/android"
+       xmlns:tools="http://schemas.android.com/tools"
+       android:layout_height="wrap_content"
+       android:layout_width="match_parent"
+       tools:parentTag="android.widget.LinearLayout"
+       tools:orientation="vertical">
+
+    <android.support.v7.widget.Toolbar
+            android:id="@+id/toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:background="?attr/search_toolbar_background"/>
+
+    <View android:layout_width="match_parent"
+          android:layout_height="7dp"
+          android:background="@drawable/search_toolbar_shadow"/>
+
+</merge>

res/menu/conversation_list.xml

@@ -1,11 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<menu xmlns:android="http://schemas.android.com/apk/res/android"
-      xmlns:app="http://schemas.android.com/apk/res-auto">
-
-    <item android:title="@string/conversation_list__menu_search"
-          android:id="@+id/menu_search"
-          android:icon="?attr/menu_search_icon"
-          app:actionViewClass="android.support.v7.widget.SearchView"
-          app:showAsAction="ifRoom|collapseActionView" />
-
-</menu>

res/menu/conversation_list_search.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+      xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <item
+            android:id="@+id/action_filter_search"
+            android:title=" "
+            app:actionViewClass="android.support.v7.widget.SearchView"
+            app:showAsAction="collapseActionView|always" />
+
+</menu>

res/values/attrs.xml

@@ -136,6 +136,8 @@
     <attr name="media_overview_document_background" format="color"/>
     <attr name="media_overview_document_foreground" format="color"/>
 
+    <attr name="search_toolbar_background" format="color"/>
+
     <declare-styleable name="ColorPreference">
         <attr name="itemLayout" format="reference" />
         <attr name="choices" format="reference" />

res/values/strings.xml

@@ -1494,6 +1494,7 @@
     <string name="conversation_list_item_inbox_zero__inbox_zeeerrro">Inbox zeeerrro</string>
     <string name="conversation_list_item_inbox_zero__zip_zilch_zero_nada_nyou_re_all_caught_up">Zip. Zilch. Zero. Nada. You\'re all caught up!</string>
     <string name="ConversationListFragment_no_results_found_for_s_">No results found for \'%s\'</string>
+    <string name="SearchToolbar_search">Search</string>
 
 
     <!-- EOF -->

res/values/themes.xml

@@ -224,6 +224,8 @@
 
         <item name="group_members_dialog_icon">@drawable/ic_group_grey600_24dp</item>
         <item name="preferenceTheme">@style/PreferenceThemeOverlay.Fix</item>
+
+        <item name="search_toolbar_background">@color/white</item>
     </style>
 
     <style name="TextSecure.DarkTheme" parent="@style/Theme.AppCompat">
@@ -348,5 +350,6 @@
 
         <item name="group_members_dialog_icon">@drawable/ic_group_white_24dp</item>
         <item name="preferenceTheme">@style/PreferenceThemeOverlay.Fix</item>
+        <item name="search_toolbar_background">@color/black</item>
     </style>
 </resources>

src/org/thoughtcrime/securesms/ConversationListActivity.java

@@ -26,21 +26,19 @@ import android.os.AsyncTask;
 import android.os.Bundle;
 import android.provider.ContactsContract;
 import android.support.annotation.NonNull;
-import android.support.v4.view.MenuItemCompat;
-import android.support.v7.app.ActionBar;
-import android.support.v7.widget.SearchView;
 import android.support.v7.widget.Toolbar;
 import android.util.Log;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
-import android.widget.LinearLayout;
+import android.view.View;
+import android.widget.ImageView;
 import android.widget.Toast;
 
 import org.thoughtcrime.securesms.components.RatingManager;
+import org.thoughtcrime.securesms.components.SearchToolbar;
 import org.thoughtcrime.securesms.crypto.MasterSecret;
 import org.thoughtcrime.securesms.database.DatabaseFactory;
-import org.thoughtcrime.securesms.database.MessagingDatabase;
 import org.thoughtcrime.securesms.database.MessagingDatabase.MarkedMessageInfo;
 import org.thoughtcrime.securesms.notifications.MarkReadReceiver;
 import org.thoughtcrime.securesms.notifications.MessageNotifier;
@@ -62,8 +60,10 @@ public class ConversationListActivity extends PassphraseRequiredActionBarActivit
   private final DynamicLanguage dynamicLanguage = new DynamicLanguage();
 
   private ConversationListFragment fragment;
-  private ContentObserver observer;
-  private MasterSecret masterSecret;
+  private ContentObserver          observer;
+  private MasterSecret             masterSecret;
+  private SearchToolbar            searchToolbar;
+  private ImageView                searchAction;
 
   @Override
   protected void onPreCreate() {
@@ -80,9 +80,12 @@ public class ConversationListActivity extends PassphraseRequiredActionBarActivit
     Toolbar toolbar = findViewById(R.id.toolbar);
     setSupportActionBar(toolbar);
 
-    fragment = initFragment(R.id.fragment_container, new ConversationListFragment(), masterSecret, dynamicLanguage.getCurrentLocale());
+    searchToolbar = findViewById(R.id.search_toolbar);
+    searchAction  = findViewById(R.id.search_action);
+    fragment      = initFragment(R.id.fragment_container, new ConversationListFragment(), masterSecret, dynamicLanguage.getCurrentLocale());
 
     initializeContactUpdatesReceiver();
+    initializeSearchListener();
 
     RatingManager.showRatingDialogIfNecessary(this);
   }
@@ -109,47 +112,28 @@ public class ConversationListActivity extends PassphraseRequiredActionBarActivit
 
     menu.findItem(R.id.menu_clear_passphrase).setVisible(!TextSecurePreferences.isPasswordDisabled(this));
 
-    inflater.inflate(R.menu.conversation_list, menu);
-    MenuItem menuItem = menu.findItem(R.id.menu_search);
-    initializeSearch(menuItem);
-
     super.onPrepareOptionsMenu(menu);
     return true;
   }
 
-  private void initializeSearch(MenuItem searchViewItem) {
-    SearchView searchView = (SearchView)MenuItemCompat.getActionView(searchViewItem);
-    searchView.setQueryHint(getString(R.string.ConversationListActivity_search));
-    searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
-      @Override
-      public boolean onQueryTextSubmit(String query) {
-        if (fragment != null) {
-          fragment.setQueryFilter(query);
-          return true;
-        }
-
-        return false;
-      }
-
-      @Override
-      public boolean onQueryTextChange(String newText) {
-        return onQueryTextSubmit(newText);
-      }
+  private void initializeSearchListener() {
+    searchAction.setOnClickListener(v -> {
+      searchToolbar.display(searchAction.getX() + (searchAction.getWidth() / 2), searchAction.getY() + (searchAction.getHeight() / 2));
     });
 
-    MenuItemCompat.setOnActionExpandListener(searchViewItem, new MenuItemCompat.OnActionExpandListener() {
+    searchToolbar.setListener(new SearchToolbar.SearchListener() {
       @Override
-      public boolean onMenuItemActionExpand(MenuItem menuItem) {
-        return true;
+      public void onSearchTextChange(String text) {
+        if (fragment != null) {
+          fragment.setQueryFilter(text);
+        }
       }
 
       @Override
-      public boolean onMenuItemActionCollapse(MenuItem menuItem) {
+      public void onSearchReset() {
         if (fragment != null) {
           fragment.resetQueryFilter();
         }
-
-        return true;
       }
     });
   }
@@ -190,6 +174,12 @@ public class ConversationListActivity extends PassphraseRequiredActionBarActivit
     startActivity(intent);
   }
 
+  @Override
+  public void onBackPressed() {
+    if (searchToolbar.isVisible()) searchToolbar.collapse();
+    else                           super.onBackPressed();
+  }
+
   private void createGroup() {
     Intent intent = new Intent(this, GroupCreateActivity.class);
     startActivity(intent);

src/org/thoughtcrime/securesms/components/SearchToolbar.java

@@ -0,0 +1,152 @@
+package org.thoughtcrime.securesms.components;
+
+
+import android.animation.Animator;
+import android.content.Context;
+import android.graphics.PorterDuff;
+import android.os.Build;
+import android.support.annotation.MainThread;
+import android.support.annotation.Nullable;
+import android.support.v7.widget.SearchView;
+import android.support.v7.widget.Toolbar;
+import android.util.AttributeSet;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.ViewAnimationUtils;
+import android.widget.EditText;
+import android.widget.LinearLayout;
+
+import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.animation.AnimationCompleteListener;
+
+public class SearchToolbar extends LinearLayout {
+
+  private float x, y;
+  private MenuItem searchItem;
+  private SearchListener listener;
+
+  public SearchToolbar(Context context) {
+    super(context);
+    initialize();
+  }
+
+  public SearchToolbar(Context context, @Nullable AttributeSet attrs) {
+    super(context, attrs);
+    initialize();
+  }
+
+  public SearchToolbar(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
+    super(context, attrs, defStyleAttr);
+    initialize();
+  }
+
+  @SuppressWarnings("ConstantConditions")
+  private void initialize() {
+    inflate(getContext(), R.layout.search_toolbar, this);
+    setOrientation(VERTICAL);
+
+    Toolbar toolbar = findViewById(R.id.toolbar);
+
+    toolbar.setNavigationIcon(R.drawable.ic_arrow_back_white_24dp);
+    toolbar.getNavigationIcon().setColorFilter(getContext().getResources().getColor(R.color.grey_700), PorterDuff.Mode.SRC_IN);
+    toolbar.inflateMenu(R.menu.conversation_list_search);
+
+    this.searchItem = toolbar.getMenu().findItem(R.id.action_filter_search);
+    SearchView searchView = (SearchView) searchItem.getActionView();
+    EditText   searchText = searchView.findViewById(android.support.v7.appcompat.R.id.search_src_text);
+
+    searchView.setSubmitButtonEnabled(false);
+
+    if (searchText != null) searchText.setHint(R.string.SearchToolbar_search);
+    else                    searchView.setQueryHint(getResources().getString(R.string.SearchToolbar_search));
+
+    searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
+      @Override
+      public boolean onQueryTextSubmit(String query) {
+        if (listener != null) listener.onSearchTextChange(query);
+        return true;
+      }
+
+      @Override
+      public boolean onQueryTextChange(String newText) {
+        return onQueryTextSubmit(newText);
+      }
+    });
+
+    searchItem.setOnActionExpandListener(new MenuItem.OnActionExpandListener() {
+      @Override
+      public boolean onMenuItemActionExpand(MenuItem item) {
+        return true;
+      }
+
+      @Override
+      public boolean onMenuItemActionCollapse(MenuItem item) {
+        hide();
+        return true;
+      }
+    });
+
+    toolbar.setNavigationOnClickListener(v -> hide());
+  }
+
+  @MainThread
+  public void display(float x, float y) {
+    if (getVisibility() != View.VISIBLE) {
+      this.x = x;
+      this.y = y;
+
+      searchItem.expandActionView();
+
+      if (Build.VERSION.SDK_INT >= 21) {
+        Animator animator = ViewAnimationUtils.createCircularReveal(this, (int)x, (int)y, 0, getWidth());
+        animator.setDuration(400);
+
+        setVisibility(View.VISIBLE);
+        animator.start();
+      } else {
+        setVisibility(View.VISIBLE);
+      }
+    }
+  }
+
+  public void collapse() {
+    searchItem.collapseActionView();
+  }
+
+  @MainThread
+  private void hide() {
+    if (getVisibility() == View.VISIBLE) {
+
+      if (listener != null) listener.onSearchReset();
+
+      if (Build.VERSION.SDK_INT >= 21) {
+        Animator animator = ViewAnimationUtils.createCircularReveal(this, (int)x, (int)y, getWidth(), 0);
+        animator.setDuration(400);
+        animator.addListener(new AnimationCompleteListener() {
+          @Override
+          public void onAnimationEnd(Animator animation) {
+            setVisibility(View.INVISIBLE);
+          }
+        });
+        animator.start();
+      } else {
+        setVisibility(View.INVISIBLE);
+      }
+    }
+  }
+
+  public boolean isVisible() {
+    return getVisibility() == View.VISIBLE;
+  }
+
+  @MainThread
+  public void setListener(SearchListener listener) {
+    this.listener = listener;
+  }
+
+  public interface SearchListener {
+    void onSearchTextChange(String text);
+    void onSearchReset();
+  }
+
+}