Made recent search suggestions

app/src/main/AndroidManifest.xml

@@ -41,6 +41,8 @@
                 <action android:name="android.intent.action.SEARCH" />
             </intent-filter>
         </activity>
+        <provider android:name=".additional.RecentSuggestionProvider"
+            android:authorities="ru.volgorobot.vrcatalog.additional.RecentSuggestionProvider" />
     </application>
 
 </manifest>

app/src/main/java/ru/volgorobot/vrcatalog/additional/RecentSuggestionProvider.java

@@ -0,0 +1,12 @@
+package ru.volgorobot.vrcatalog.additional;
+
+import android.content.SearchRecentSuggestionsProvider;
+
+public class RecentSuggestionProvider extends SearchRecentSuggestionsProvider {
+    public final static String AUTHORITY = "ru.volgorobot.vrcatalog.additional.RecentSuggestionProvider";
+    public final static int MODE = DATABASE_MODE_QUERIES;
+
+    public RecentSuggestionProvider() {
+        setupSuggestions(AUTHORITY, MODE);
+    }
+}

app/src/main/java/ru/volgorobot/vrcatalog/view/SearchableActivity.java

@@ -3,6 +3,7 @@ package ru.volgorobot.vrcatalog.view;
 import android.app.SearchManager;
 import android.content.Intent;
 import android.os.Bundle;
+import android.provider.SearchRecentSuggestions;
 import android.support.v4.widget.NestedScrollView;
 import android.support.v4.widget.SwipeRefreshLayout;
 import android.support.v7.app.AppCompatActivity;
@@ -21,6 +22,7 @@ import me.texy.treeview.TreeView;
 import ru.volgorobot.vrcatalog.MainContract;
 import ru.volgorobot.vrcatalog.R;
 import ru.volgorobot.vrcatalog.SearchablePresenter;
+import ru.volgorobot.vrcatalog.additional.RecentSuggestionProvider;
 import ru.volgorobot.vrcatalog.additional.SearchableNodeViewFactory;
 import ru.volgorobot.vrcatalog.model.FirstLevelModel;
 
@@ -59,6 +61,9 @@ public class SearchableActivity extends AppCompatActivity implements MainContrac
             detailName = intent.getStringExtra(SearchManager.QUERY);
             getSupportActionBar().setTitle("Поиск: " + detailName);
             searchablePresenter.fetchDetailsTreeByName(detailName);
+            SearchRecentSuggestions suggestions = new SearchRecentSuggestions(this,
+                    RecentSuggestionProvider.AUTHORITY, RecentSuggestionProvider.MODE);
+            suggestions.saveRecentQuery(detailName, null);
         }
     }
 

app/src/main/java/ru/volgorobot/vrcatalog/view/SettingsActivity.java

@@ -1,10 +1,15 @@
 package ru.volgorobot.vrcatalog.view;
 
+import android.app.AlertDialog;
+import android.content.DialogInterface;
 import android.os.Bundle;
+import android.preference.Preference;
+import android.provider.SearchRecentSuggestions;
 import android.view.MenuItem;
 
 import ru.volgorobot.vrcatalog.R;
 import ru.volgorobot.vrcatalog.additional.AppCompatPreferenceActivity;
+import ru.volgorobot.vrcatalog.additional.RecentSuggestionProvider;
 
 public class SettingsActivity extends AppCompatPreferenceActivity {
 
@@ -15,6 +20,32 @@ public class SettingsActivity extends AppCompatPreferenceActivity {
 
         getSupportActionBar().setDisplayHomeAsUpEnabled(true);
         getSupportActionBar().setHomeButtonEnabled(true);
+
+        Preference clearSearchHistoryButton = findPreference("clearSearchHistoryButton");
+        clearSearchHistoryButton.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
+            @Override
+            public boolean onPreferenceClick(Preference preference) {
+                AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(SettingsActivity.this)
+                        .setTitle("Подтвердите действие")
+                        .setMessage("Вы уверены, что хотите очистить историю вашего поиска?")
+                        .setPositiveButton("ОК", new DialogInterface.OnClickListener() {
+                            @Override
+                            public void onClick(DialogInterface dialogInterface, int i) {
+                                SearchRecentSuggestions suggestions = new SearchRecentSuggestions(SettingsActivity.this,
+                                        RecentSuggestionProvider.AUTHORITY, RecentSuggestionProvider.MODE);
+                                suggestions.clearHistory();
+                            }
+                        })
+                        .setNegativeButton("Отмена", new DialogInterface.OnClickListener() {
+                            @Override
+                            public void onClick(DialogInterface dialogInterface, int i) {
+                                // Nothing to do
+                            }
+                        });
+                dialogBuilder.show();
+                return true;
+            }
+        });
     }
 
     @Override

app/src/main/res/xml/activity_settings.xml

@@ -5,4 +5,7 @@
         android:title="Адрес API-сервера"
         android:summary="API-сервер необходим для доступа к БД деталей"
         android:defaultValue="http://example.com"/>
+    <Preference
+        android:title="Очистить историю поиска"
+        android:key="clearSearchHistoryButton"/>
 </PreferenceScreen>

app/src/main/res/xml/searchable.xml

@@ -1,5 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <searchable xmlns:android="http://schemas.android.com/apk/res/android"
     android:label="@string/app_name"
-    android:hint="Поиск деталей по имени" >
+    android:hint="Поиск деталей по имени"
+    android:searchSuggestAuthority="ru.volgorobot.vrcatalog.additional.RecentSuggestionProvider"
+    android:searchSuggestSelection=" ?" >
 </searchable>