From e4829ab1ac1024ca26dcfbbb862559d061491363 Mon Sep 17 00:00:00 2001
From: ChronosX88 <chronosx88@gmail.com>
Date: Sun, 13 Jan 2019 16:14:23 +0400
Subject: [PATCH 1/6] Added the effect of clicking on a tree item

---
 app/src/main/res/layout/first_level_item.xml  | 3 ++-
 app/src/main/res/layout/second_level_item.xml | 3 ++-
 app/src/main/res/layout/third_level_item.xml  | 3 ++-
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/app/src/main/res/layout/first_level_item.xml b/app/src/main/res/layout/first_level_item.xml
index 68a0797..1d2da0f 100644
--- a/app/src/main/res/layout/first_level_item.xml
+++ b/app/src/main/res/layout/first_level_item.xml
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
-    android:layout_height="80dp">
+    android:layout_height="80dp"
+    android:background="?android:selectableItemBackground">
 
     <LinearLayout
         android:id="@+id/node_container"
diff --git a/app/src/main/res/layout/second_level_item.xml b/app/src/main/res/layout/second_level_item.xml
index b1ede8e..47a2877 100644
--- a/app/src/main/res/layout/second_level_item.xml
+++ b/app/src/main/res/layout/second_level_item.xml
@@ -2,7 +2,8 @@
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="60dp"
-    android:orientation="vertical">
+    android:orientation="vertical"
+    android:background="?android:selectableItemBackground">
 
     <LinearLayout
         android:id="@+id/node_container"
diff --git a/app/src/main/res/layout/third_level_item.xml b/app/src/main/res/layout/third_level_item.xml
index 2679be5..5fa3432 100644
--- a/app/src/main/res/layout/third_level_item.xml
+++ b/app/src/main/res/layout/third_level_item.xml
@@ -2,7 +2,8 @@
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="40dp"
-    android:orientation="vertical">
+    android:orientation="vertical"
+    android:background="?android:selectableItemBackground">
 
     <LinearLayout
         android:id="@+id/node_container"

From c6b4cafb0577c3561f8fae66094b6e9df7cd117b Mon Sep 17 00:00:00 2001
From: ChronosX88 <chronosx88@gmail.com>
Date: Sun, 13 Jan 2019 16:59:53 +0400
Subject: [PATCH 2/6] Removed unnecessary imports.

---
 .../java/ru/volgorobot/vrcatalog/api/Controller.java   |  3 ---
 .../nodeViewBinders/FirstLevelNodeViewBinder.java      |  7 -------
 .../nodeViewBinders/SecondLevelNodeViewBinder.java     |  6 ------
 .../nodeViewBinders/ThirdLevelNodeViewBinder.java      | 10 +---------
 .../ru/volgorobot/vrcatalog/view/DetailActivity.java   |  3 +--
 5 files changed, 2 insertions(+), 27 deletions(-)

diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/api/Controller.java b/app/src/main/java/ru/volgorobot/vrcatalog/api/Controller.java
index 3a1654a..383d4fc 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/api/Controller.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/api/Controller.java
@@ -1,8 +1,5 @@
 package ru.volgorobot.vrcatalog.api;
 
-import android.content.Context;
-import android.widget.Toast;
-
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/FirstLevelNodeViewBinder.java b/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/FirstLevelNodeViewBinder.java
index 78b6495..846dbd5 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/FirstLevelNodeViewBinder.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/FirstLevelNodeViewBinder.java
@@ -1,23 +1,16 @@
 package ru.volgorobot.vrcatalog.nodeViewBinders;
 
 import android.content.Context;
-import android.os.AsyncTask;
 import android.view.View;
 import android.widget.ImageView;
 import android.widget.TextView;
 
-import java.util.ArrayList;
-
 import me.texy.treeview.TreeNode;
 import me.texy.treeview.base.BaseNodeViewBinder;
 import ru.volgorobot.vrcatalog.MainContract;
 import ru.volgorobot.vrcatalog.R;
 import ru.volgorobot.vrcatalog.ViewBinderPresenter;
-import ru.volgorobot.vrcatalog.additional.NetworkErrorException;
-import ru.volgorobot.vrcatalog.additional.ResultWithErrorCode;
-import ru.volgorobot.vrcatalog.model.CoreModel;
 import ru.volgorobot.vrcatalog.model.FirstLevelModel;
-import ru.volgorobot.vrcatalog.model.SecondLevelModel;
 
 public class FirstLevelNodeViewBinder extends BaseNodeViewBinder implements MainContract.ViewBinder {
     TextView textView;
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/SecondLevelNodeViewBinder.java b/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/SecondLevelNodeViewBinder.java
index fb561bb..d719cc5 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/SecondLevelNodeViewBinder.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/SecondLevelNodeViewBinder.java
@@ -1,23 +1,17 @@
 package ru.volgorobot.vrcatalog.nodeViewBinders;
 
 import android.content.Context;
-import android.os.AsyncTask;
 import android.view.View;
 import android.widget.ImageView;
 import android.widget.TextView;
 
-import java.util.ArrayList;
-
 import me.texy.treeview.TreeNode;
 import me.texy.treeview.base.BaseNodeViewBinder;
 import ru.volgorobot.vrcatalog.MainContract;
 import ru.volgorobot.vrcatalog.R;
 import ru.volgorobot.vrcatalog.ViewBinderPresenter;
-import ru.volgorobot.vrcatalog.additional.NetworkErrorException;
-import ru.volgorobot.vrcatalog.additional.ResultWithErrorCode;
 import ru.volgorobot.vrcatalog.model.CoreModel;
 import ru.volgorobot.vrcatalog.model.SecondLevelModel;
-import ru.volgorobot.vrcatalog.model.ThirdLevelModel;
 
 public class SecondLevelNodeViewBinder extends BaseNodeViewBinder implements MainContract.ViewBinder {
     TextView textView;
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/ThirdLevelNodeViewBinder.java b/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/ThirdLevelNodeViewBinder.java
index 1545d46..07ba470 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/ThirdLevelNodeViewBinder.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/ThirdLevelNodeViewBinder.java
@@ -1,24 +1,16 @@
 package ru.volgorobot.vrcatalog.nodeViewBinders;
 
 import android.content.Context;
-import android.content.Intent;
-import android.os.AsyncTask;
 import android.view.View;
 import android.widget.TextView;
 
-import java.util.ArrayList;
-
 import me.texy.treeview.TreeNode;
 import me.texy.treeview.base.BaseNodeViewBinder;
 import ru.volgorobot.vrcatalog.MainContract;
 import ru.volgorobot.vrcatalog.R;
 import ru.volgorobot.vrcatalog.ViewBinderPresenter;
-import ru.volgorobot.vrcatalog.additional.NetworkErrorException;
-import ru.volgorobot.vrcatalog.additional.ResultWithErrorCode;
 import ru.volgorobot.vrcatalog.model.CoreModel;
-import ru.volgorobot.vrcatalog.model.DetailModel;
 import ru.volgorobot.vrcatalog.model.ThirdLevelModel;
-import ru.volgorobot.vrcatalog.view.DetailActivity;
 
 public class ThirdLevelNodeViewBinder extends BaseNodeViewBinder implements MainContract.ViewBinder {
     TextView textView;
@@ -27,7 +19,7 @@ public class ThirdLevelNodeViewBinder extends BaseNodeViewBinder implements Main
     public ThirdLevelNodeViewBinder(View itemView, Context context, MainContract.MainActivityView mView, CoreModel coreModel) {
         super(itemView);
         viewBinderPresenter = new ViewBinderPresenter(mView, coreModel, this, context);
-        textView = (TextView) itemView.findViewById(R.id.node_name_view);
+        textView = itemView.findViewById(R.id.node_name_view);
     }
 
     @Override
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/view/DetailActivity.java b/app/src/main/java/ru/volgorobot/vrcatalog/view/DetailActivity.java
index b478d3b..8af69ba 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/view/DetailActivity.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/view/DetailActivity.java
@@ -1,15 +1,14 @@
 package ru.volgorobot.vrcatalog.view;
 
 import android.content.Intent;
-import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
 import android.text.method.LinkMovementMethod;
 import android.view.MenuItem;
 import android.widget.EditText;
 import android.widget.TextView;
 
 import java.util.HashMap;
-import java.util.Map;
 
 import ru.volgorobot.vrcatalog.R;
 

From 4fb99782d4e0a98adac1fc4d3924e26b45ee2038 Mon Sep 17 00:00:00 2001
From: ChronosX88 <chronosx88@gmail.com>
Date: Tue, 15 Jan 2019 22:08:09 +0400
Subject: [PATCH 3/6] Added search.

---
 .idea/caches/build_file_checksums.ser         | Bin 537 -> 537 bytes
 .idea/caches/gradle_models.ser                | Bin 0 -> 101927 bytes
 .idea/gradle.xml                              |   3 +
 .idea/render.experimental.xml                 |   6 +
 app/src/main/AndroidManifest.xml              |  17 +-
 .../ru/volgorobot/vrcatalog/MainContract.java |  13 ++
 .../vrcatalog/SearchablePresenter.java        | 219 ++++++++++++++++++
 .../vrcatalog/ViewBinderPresenter.java        |  11 +-
 .../vrcatalog/additional/NodeViewFactory.java |   6 +-
 .../additional/SearchableNodeViewFactory.java |  35 +++
 .../ru/volgorobot/vrcatalog/api/VRApi.java    |   9 +
 .../volgorobot/vrcatalog/model/CoreModel.java |  57 +++++
 .../FirstLevelNodeViewBinder.java             |   4 +-
 .../SecondLevelNodeViewBinder.java            |   5 +-
 .../ThirdLevelNodeViewBinder.java             |   5 +-
 .../FirstLevelNodeViewBinder.java             |  39 ++++
 .../SecondLevelNodeViewBinder.java            |  39 ++++
 .../vrcatalog/view/MainActivity.java          |  20 ++
 .../vrcatalog/view/SearchableActivity.java    | 117 ++++++++++
 .../main/res/layout/activity_searchable.xml   |  21 ++
 app/src/main/res/menu/main.xml                |   6 +
 app/src/main/res/xml/searchable.xml           |   5 +
 build.gradle                                  |   2 +-
 gradle/wrapper/gradle-wrapper.properties      |   3 +-
 24 files changed, 620 insertions(+), 22 deletions(-)
 create mode 100644 .idea/caches/gradle_models.ser
 create mode 100644 .idea/render.experimental.xml
 create mode 100644 app/src/main/java/ru/volgorobot/vrcatalog/SearchablePresenter.java
 create mode 100644 app/src/main/java/ru/volgorobot/vrcatalog/additional/SearchableNodeViewFactory.java
 create mode 100644 app/src/main/java/ru/volgorobot/vrcatalog/searchNodeViewBinders/FirstLevelNodeViewBinder.java
 create mode 100644 app/src/main/java/ru/volgorobot/vrcatalog/searchNodeViewBinders/SecondLevelNodeViewBinder.java
 create mode 100644 app/src/main/java/ru/volgorobot/vrcatalog/view/SearchableActivity.java
 create mode 100644 app/src/main/res/layout/activity_searchable.xml
 create mode 100644 app/src/main/res/xml/searchable.xml

diff --git a/.idea/caches/build_file_checksums.ser b/.idea/caches/build_file_checksums.ser
index 9c9d4877679efb0f01b207b4ae0d52e78ccc685f..f16fad93624aad29773c93405fada908b06ab6c3 100644
GIT binary patch
delta 35
tcmV+;0NnqX1epYom;_QMQ=^fb<Per@JC(ne@pPSfxc~e_HnfwF0f`*)5h(xw

delta 35
tcmV+;0NnqX1epYom;^HoV7!r><PaNYnOmr(sHsra<?YNR`%{yU0f`ew5ZnL&

diff --git a/.idea/caches/gradle_models.ser b/.idea/caches/gradle_models.ser
new file mode 100644
index 0000000000000000000000000000000000000000..72108581cbbb6bae1737add54163dacc44e6fc9b
GIT binary patch
literal 101927
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zHcfS^v5NdNT54E7zU7pAzW<iNM}WZRD?KX0Up`rHn##fF6B<WKwFqwLSbN)@7asmX
zYyfszDwA~}R4){rS0Xe41$ssoxP=KC!Y|M`^8}E;IGFX}!2~t$K&uByPLho?X5Q;2
F{~z6MJi-6~

literal 0
HcmV?d00001

diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index 7ac24c7..f43d428 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -3,6 +3,9 @@
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
+        <compositeConfiguration>
+          <compositeBuild compositeDefinitionSource="SCRIPT" />
+        </compositeConfiguration>
         <option name="distributionType" value="DEFAULT_WRAPPED" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
         <option name="modules">
diff --git a/.idea/render.experimental.xml b/.idea/render.experimental.xml
new file mode 100644
index 0000000..8ec256a
--- /dev/null
+++ b/.idea/render.experimental.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RenderSettings">
+    <option name="showDecorations" value="true" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 1539b9a..f210ba2 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -23,7 +23,22 @@
         </activity>
         <activity android:name=".view.SettingsActivity" />
         <activity android:name=".view.AboutActivity" />
-        <activity android:name=".view.DetailActivity"></activity>
+        <activity android:name=".view.DetailActivity" />
+        <activity
+            android:name=".view.SearchableActivity"
+            android:label="Поиск"
+            android:parentActivityName="ru.volgorobot.vrcatalog.view.MainActivity">
+            <!-- Parent activity meta-data to support 4.0 and lower -->
+            <meta-data
+                android:name="android.support.PARENT_ACTIVITY"
+                android:value="ru.volgorobot.vrcatalog.view.MainActivity" />
+            <!-- meta tag and intent filter go into results activity -->
+            <meta-data android:name="android.app.searchable"
+                android:resource="@xml/searchable" />
+            <intent-filter>
+                <action android:name="android.intent.action.SEARCH" />
+            </intent-filter>
+        </activity>
     </application>
 
 </manifest>
\ No newline at end of file
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/MainContract.java b/app/src/main/java/ru/volgorobot/vrcatalog/MainContract.java
index 89d94b6..4bf200d 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/MainContract.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/MainContract.java
@@ -43,5 +43,18 @@ public interface MainContract {
         ArrayList<DetailModel> fetchDetailByID(int detailID) throws NetworkErrorException, NullPointerException;
         void reinitializeApi() throws IllegalStateException;
         boolean getApiState();
+        ArrayList<ThirdLevelModel> fetchDetailsByName(String name) throws NetworkErrorException, NullPointerException;
+        ArrayList<FirstLevelModel> fetchCategoryByID(int id) throws NetworkErrorException, NullPointerException;
+        ArrayList<SecondLevelModel> fetchSubCategoryByID(int id) throws NetworkErrorException, NullPointerException;
+    }
+
+    interface SearchablePresenter {
+        void fetchDetailsTreeByName(String name);
+    }
+
+    interface SearchableActivityView {
+        void setTreeViewChildren(ArrayList<TreeNode> children);
+        void onFailureAnswer(int errorCode);
+        void swipeLayoutSetRefreshing(boolean state);
     }
 }
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/SearchablePresenter.java b/app/src/main/java/ru/volgorobot/vrcatalog/SearchablePresenter.java
new file mode 100644
index 0000000..324c74f
--- /dev/null
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/SearchablePresenter.java
@@ -0,0 +1,219 @@
+package ru.volgorobot.vrcatalog;
+
+import android.content.Context;
+import android.os.AsyncTask;
+
+import java.util.ArrayList;
+import java.util.concurrent.ExecutionException;
+
+import me.texy.treeview.TreeNode;
+import ru.volgorobot.vrcatalog.additional.NetworkErrorException;
+import ru.volgorobot.vrcatalog.additional.ResultWithErrorCode;
+import ru.volgorobot.vrcatalog.model.CoreModel;
+import ru.volgorobot.vrcatalog.model.FirstLevelModel;
+import ru.volgorobot.vrcatalog.model.SecondLevelModel;
+import ru.volgorobot.vrcatalog.model.ThirdLevelModel;
+
+public class SearchablePresenter implements MainContract.SearchablePresenter {
+    private MainContract.SearchableActivityView mView;
+    private MainContract.MainModel coreModel;
+
+    public SearchablePresenter(MainContract.SearchableActivityView mView, Context context) {
+        this.mView = mView;
+        this.coreModel = new CoreModel(context);
+    }
+
+    @Override
+    public void fetchDetailsTreeByName(String name) {
+        ArrayList<FirstLevelModel> categories = new ArrayList<>();
+        ArrayList<SecondLevelModel> subcategories = new ArrayList<>();
+        ArrayList<ThirdLevelModel> details = new ArrayList<>();
+
+        try {
+            FetchDetailsByNameTask fetchDetailsByNameTask = new FetchDetailsByNameTask();
+            FetchCategoryByIDTask fetchCategoryByIDTask = new FetchCategoryByIDTask();
+            FetchSubCategoryByIDTask fetchSubCategoryByIDTask = new FetchSubCategoryByIDTask();
+
+            details.addAll(new FetchDetailsByNameTask().execute(name).get().getData());
+            for (int i = 0; i < details.size(); i++) {
+                subcategories.add(new FetchSubCategoryByIDTask().execute(details.get(i).getDetailSubTypeId()).get().getData());
+            }
+            for (int i = 0; i < subcategories.size(); i++) {
+                categories.add(new FetchCategoryByIDTask().execute(subcategories.get(i).getDetailTypeId()).get().getData());
+            }
+        } catch (ExecutionException e) {
+            //
+        } catch (InterruptedException e) {
+            //
+        }
+
+        new AsyncTask<Void, Void, ArrayList<TreeNode>>() {
+            @Override
+            protected ArrayList<TreeNode> doInBackground(Void... voids) {
+                ArrayList<TreeNode> treeNodes = new ArrayList<>();
+                for (int i = 0; i < categories.size(); i++) {
+                    treeNodes.add(new TreeNode(categories.get(i)));
+                    ArrayList<SecondLevelModel> secondLevelModels = getSecondModelsByCategoryID(subcategories, categories.get(i).getID());
+                    for (int j = 0; j < secondLevelModels.size(); j++) {
+                        treeNodes.get(i).addChild(new TreeNode(secondLevelModels.get(j)));
+                    }
+                    ArrayList<TreeNode> subnodes = (ArrayList<TreeNode>) treeNodes.get(i).getChildren();
+                    for (int j = 0; j < subnodes.size(); j++) {
+                        ArrayList<ThirdLevelModel> thirdLevelModels = getDetailsByCategoryID(details, ((SecondLevelModel) subnodes.get(j).getValue()).getID());
+                        for (int k = 0; k < thirdLevelModels.size(); k++) {
+                            subnodes.get(j).addChild(new TreeNode(thirdLevelModels.get(k)));
+                        }
+                    }
+                }
+                return treeNodes;
+            }
+
+            @Override
+            protected void onPostExecute(ArrayList<TreeNode> treeNodes) {
+                super.onPostExecute(treeNodes);
+                mView.setTreeViewChildren(treeNodes);
+                mView.swipeLayoutSetRefreshing(false);
+            }
+        }.execute();
+    }
+
+    private ArrayList<SecondLevelModel> getSecondModelsByCategoryID(ArrayList<SecondLevelModel> secondLevelModels, int id) {
+        ArrayList<SecondLevelModel> secondLevelModelsByCategoryID = new ArrayList<>();
+        for (int i = 0; i < secondLevelModels.size(); i++) {
+            if(secondLevelModels.get(i).getDetailTypeId() == id)
+                secondLevelModelsByCategoryID.add(secondLevelModels.get(i));
+        }
+        
+        return secondLevelModelsByCategoryID;
+    }
+
+    private ArrayList<ThirdLevelModel> getDetailsByCategoryID(ArrayList<ThirdLevelModel> thirdLevelModels, int id) {
+        ArrayList<ThirdLevelModel> thirdLevelModelsBySubcategoryID = new ArrayList<>();
+        for (int i = 0; i < thirdLevelModels.size(); i++) {
+            if(thirdLevelModels.get(i).getDetailSubTypeId() == id)
+                thirdLevelModelsBySubcategoryID.add(thirdLevelModels.get(i));
+        }
+
+        return thirdLevelModelsBySubcategoryID;
+    }
+
+    class FetchDetailsByNameTask extends AsyncTask<String, Void, ResultWithErrorCode<ArrayList<ThirdLevelModel>>> {
+        @Override
+        protected void onPreExecute() {
+            super.onPreExecute();
+            mView.swipeLayoutSetRefreshing(true);
+        }
+
+        @Override
+        protected ResultWithErrorCode<ArrayList<ThirdLevelModel>> doInBackground(String... strings) {
+            ArrayList<ThirdLevelModel> details = new ArrayList<>();
+            try {
+                details.addAll(coreModel.fetchDetailsByName(strings[0]));
+            } catch (NetworkErrorException networkErrorException) {
+                return new ResultWithErrorCode<>(details, networkErrorException.getErrorCode());
+            } catch (NullPointerException nullPointerException) {
+                return new ResultWithErrorCode<>(details, 3);
+            }
+            return new ResultWithErrorCode<>(details, 0);
+        }
+
+        @Override
+        protected void onPostExecute(ResultWithErrorCode<ArrayList<ThirdLevelModel>> result) {
+            super.onPostExecute(result);
+            switch (result.getErrorCode()) {
+                case 0: {
+                    //
+                    break;
+                }
+                case 1: {
+                    mView.onFailureAnswer(1);
+                    break;
+                }
+                case 2: {
+                    mView.onFailureAnswer(2);
+                    break;
+                }
+                case 3: {
+                    mView.onFailureAnswer(3);
+                    break;
+                }
+            }
+        }
+    }
+
+    class FetchCategoryByIDTask extends AsyncTask<Integer, Void, ResultWithErrorCode<FirstLevelModel>> {
+        @Override
+        protected ResultWithErrorCode<FirstLevelModel> doInBackground(Integer... integers) {
+            FirstLevelModel firstLevelModel;
+            try {
+                firstLevelModel = coreModel.fetchCategoryByID(integers[0]).get(0);
+            } catch (NetworkErrorException networkErrorException) {
+                return new ResultWithErrorCode<>(null, networkErrorException.getErrorCode());
+            } catch (NullPointerException nullPointerException) {
+                return new ResultWithErrorCode<>(null, 3);
+            }
+            return new ResultWithErrorCode<>(firstLevelModel, 0);
+        }
+
+        @Override
+        protected void onPostExecute(ResultWithErrorCode<FirstLevelModel> result) {
+            super.onPostExecute(result);
+            switch (result.getErrorCode()) {
+                case 0: {
+                    // Nothing to do.
+                    break;
+                }
+                case 1: {
+                    mView.onFailureAnswer(1);
+                    break;
+                }
+                case 2: {
+                    mView.onFailureAnswer(2);
+                    break;
+                }
+                case 3: {
+                    mView.onFailureAnswer(3);
+                    break;
+                }
+            }
+        }
+    }
+
+    class FetchSubCategoryByIDTask extends AsyncTask<Integer, Void, ResultWithErrorCode<SecondLevelModel>> {
+        @Override
+        protected ResultWithErrorCode<SecondLevelModel> doInBackground(Integer... integers) {
+            SecondLevelModel secondLevelModel;
+            try {
+                secondLevelModel = coreModel.fetchSubCategoryByID(integers[0]).get(0);
+            } catch (NetworkErrorException networkErrorException) {
+                return new ResultWithErrorCode<>(null, networkErrorException.getErrorCode());
+            } catch (NullPointerException nullPointerException) {
+                return new ResultWithErrorCode<>(null, 3);
+            }
+            return new ResultWithErrorCode<>(secondLevelModel, 0);
+        }
+
+        @Override
+        protected void onPostExecute(ResultWithErrorCode<SecondLevelModel> result) {
+            super.onPostExecute(result);
+            switch (result.getErrorCode()) {
+                case 0: {
+                    // Nothing to do.
+                    break;
+                }
+                case 1: {
+                    mView.onFailureAnswer(1);
+                    break;
+                }
+                case 2: {
+                    mView.onFailureAnswer(2);
+                    break;
+                }
+                case 3: {
+                    mView.onFailureAnswer(3);
+                    break;
+                }
+            }
+        }
+    }
+}
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/ViewBinderPresenter.java b/app/src/main/java/ru/volgorobot/vrcatalog/ViewBinderPresenter.java
index d633d53..5f02f40 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/ViewBinderPresenter.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/ViewBinderPresenter.java
@@ -9,6 +9,7 @@ import java.util.ArrayList;
 import me.texy.treeview.TreeNode;
 import ru.volgorobot.vrcatalog.additional.NetworkErrorException;
 import ru.volgorobot.vrcatalog.additional.ResultWithErrorCode;
+import ru.volgorobot.vrcatalog.model.CoreModel;
 import ru.volgorobot.vrcatalog.model.DetailModel;
 import ru.volgorobot.vrcatalog.model.FirstLevelModel;
 import ru.volgorobot.vrcatalog.model.SecondLevelModel;
@@ -21,15 +22,9 @@ public class ViewBinderPresenter implements MainContract.ViewBinderPresenter {
     private MainContract.ViewBinder viewBinder;
     private Context context;
 
-    public ViewBinderPresenter(MainContract.MainActivityView mView, MainContract.MainModel coreModel, MainContract.ViewBinder viewBinder) {
+    public ViewBinderPresenter(MainContract.MainActivityView mView, MainContract.ViewBinder viewBinder, Context context) {
         this.mView = mView;
-        this.coreModel = coreModel;
-        this.viewBinder = viewBinder;
-    }
-
-    public ViewBinderPresenter(MainContract.MainActivityView mView, MainContract.MainModel coreModel, MainContract.ViewBinder viewBinder, Context context) {
-        this.mView = mView;
-        this.coreModel = coreModel;
+        this.coreModel = new CoreModel(context);
         this.viewBinder = viewBinder;
         this.context = context;
     }
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/additional/NodeViewFactory.java b/app/src/main/java/ru/volgorobot/vrcatalog/additional/NodeViewFactory.java
index 6343fe4..2623a5e 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/additional/NodeViewFactory.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/additional/NodeViewFactory.java
@@ -26,11 +26,11 @@ public class NodeViewFactory extends BaseNodeViewFactory {
     public BaseNodeViewBinder getNodeViewBinder(View view, int level) {
         switch (level) {
             case 0:
-                return new FirstLevelNodeViewBinder(view, context, mView, coreModel);
+                return new FirstLevelNodeViewBinder(view, mView, context);
             case 1:
-                return new SecondLevelNodeViewBinder(view, context, mView, coreModel);
+                return new SecondLevelNodeViewBinder(view, mView, context);
             case 2:
-                return new ThirdLevelNodeViewBinder(view, context, mView, coreModel);
+                return new ThirdLevelNodeViewBinder(view, context, mView);
             default:
                 return null;
         }
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/additional/SearchableNodeViewFactory.java b/app/src/main/java/ru/volgorobot/vrcatalog/additional/SearchableNodeViewFactory.java
new file mode 100644
index 0000000..15274d1
--- /dev/null
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/additional/SearchableNodeViewFactory.java
@@ -0,0 +1,35 @@
+package ru.volgorobot.vrcatalog.additional;
+
+import android.content.Context;
+import android.view.View;
+
+import me.texy.treeview.base.BaseNodeViewBinder;
+import me.texy.treeview.base.BaseNodeViewFactory;
+import ru.volgorobot.vrcatalog.MainContract;
+import ru.volgorobot.vrcatalog.nodeViewBinders.ThirdLevelNodeViewBinder;
+import ru.volgorobot.vrcatalog.searchNodeViewBinders.SecondLevelNodeViewBinder;
+import ru.volgorobot.vrcatalog.searchNodeViewBinders.FirstLevelNodeViewBinder;
+
+public class SearchableNodeViewFactory extends BaseNodeViewFactory {
+    private Context context;
+    private MainContract.MainActivityView mView;
+
+    public SearchableNodeViewFactory(Context context, MainContract.MainActivityView mView) {
+        this.context = context;
+        this.mView = mView;
+    }
+
+    @Override
+    public BaseNodeViewBinder getNodeViewBinder(View view, int level) {
+        switch (level) {
+            case 0:
+                return new FirstLevelNodeViewBinder(view);
+            case 1:
+                return new SecondLevelNodeViewBinder(view);
+            case 2:
+                return new ThirdLevelNodeViewBinder(view, context, mView);
+            default:
+                return null;
+        }
+    }
+}
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/api/VRApi.java b/app/src/main/java/ru/volgorobot/vrcatalog/api/VRApi.java
index 80e062d..40b8ce3 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/api/VRApi.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/api/VRApi.java
@@ -23,4 +23,13 @@ public interface VRApi {
 
     @GET("/API/Api.php?action=getDetailByID")
     Call<List<DetailModel>> getDetailByID(@Query("detailID") int detailID);
+
+    @GET("/API/Api.php?action=getCategoryByID")
+    Call<List<FirstLevelModel>> getCategoryByID(@Query("id") int id);
+
+    @GET("/API/Api.php?action=getSubCategoryByID")
+    Call<List<SecondLevelModel>> getSubCategoryByID(@Query("id") int id);
+
+    @GET("/API/Api.php?action=getDetailsByName")
+    Call<List<ThirdLevelModel>> getDetailsByName(@Query("name") String name);
 }
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/model/CoreModel.java b/app/src/main/java/ru/volgorobot/vrcatalog/model/CoreModel.java
index ccbb53a..7a3ee03 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/model/CoreModel.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/model/CoreModel.java
@@ -125,4 +125,61 @@ public class CoreModel implements MainContract.MainModel {
             return false;
         }
     }
+
+    @Override
+    public ArrayList<ThirdLevelModel> fetchDetailsByName(String name) throws NetworkErrorException, NullPointerException {
+        if(vrApi == null) {
+            throw new NullPointerException();
+        }
+        final ArrayList<ThirdLevelModel> thirdLevelModels = new ArrayList<>();
+        try {
+            Response<List<ThirdLevelModel>> response = vrApi.getDetailsByName(name).execute();
+            if(response.isSuccessful()) {
+                thirdLevelModels.addAll(response.body());
+            } else {
+                throw new NetworkErrorException(2);
+            }
+        } catch (IOException e) {
+            throw new NetworkErrorException(1);
+        }
+        return thirdLevelModels;
+    }
+
+    @Override
+    public ArrayList<FirstLevelModel> fetchCategoryByID(int id) throws NetworkErrorException, NullPointerException {
+        if(vrApi == null) {
+            throw new NullPointerException();
+        }
+        final ArrayList<FirstLevelModel> firstLevelModels = new ArrayList<>();
+        try {
+            Response<List<FirstLevelModel>> response = vrApi.getCategoryByID(id).execute();
+            if(response.isSuccessful()) {
+                firstLevelModels.addAll(response.body());
+            } else {
+                throw new NetworkErrorException(2);
+            }
+        } catch (IOException e) {
+            throw new NetworkErrorException(1);
+        }
+        return firstLevelModels;
+    }
+
+    @Override
+    public ArrayList<SecondLevelModel> fetchSubCategoryByID(int id) throws NetworkErrorException, NullPointerException {
+        if(vrApi == null) {
+            throw new NullPointerException();
+        }
+        final ArrayList<SecondLevelModel> secondLevelModels = new ArrayList<>();
+        try {
+            Response<List<SecondLevelModel>> response = vrApi.getSubCategoryByID(id).execute();
+            if(response.isSuccessful()) {
+                secondLevelModels.addAll(response.body());
+            } else {
+                throw new NetworkErrorException(2);
+            }
+        } catch (IOException e) {
+            throw new NetworkErrorException(1);
+        }
+        return secondLevelModels;
+    }
 }
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/FirstLevelNodeViewBinder.java b/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/FirstLevelNodeViewBinder.java
index 846dbd5..6766eb8 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/FirstLevelNodeViewBinder.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/FirstLevelNodeViewBinder.java
@@ -17,11 +17,11 @@ public class FirstLevelNodeViewBinder extends BaseNodeViewBinder implements Main
     ImageView imageView;
     ViewBinderPresenter viewBinderPresenter;
 
-    public FirstLevelNodeViewBinder(View itemView, Context context, MainContract.MainActivityView mView, MainContract.MainModel coreModel) {
+    public FirstLevelNodeViewBinder(View itemView, MainContract.MainActivityView mView, Context context) {
         super(itemView);
         textView = (TextView) itemView.findViewById(R.id.node_name_view);
         imageView = (ImageView) itemView.findViewById(R.id.arrow_img);
-        viewBinderPresenter = new ViewBinderPresenter(mView, coreModel, this);
+        viewBinderPresenter = new ViewBinderPresenter(mView, this, context);
     }
 
     @Override
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/SecondLevelNodeViewBinder.java b/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/SecondLevelNodeViewBinder.java
index d719cc5..c158271 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/SecondLevelNodeViewBinder.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/SecondLevelNodeViewBinder.java
@@ -10,7 +10,6 @@ import me.texy.treeview.base.BaseNodeViewBinder;
 import ru.volgorobot.vrcatalog.MainContract;
 import ru.volgorobot.vrcatalog.R;
 import ru.volgorobot.vrcatalog.ViewBinderPresenter;
-import ru.volgorobot.vrcatalog.model.CoreModel;
 import ru.volgorobot.vrcatalog.model.SecondLevelModel;
 
 public class SecondLevelNodeViewBinder extends BaseNodeViewBinder implements MainContract.ViewBinder {
@@ -19,11 +18,11 @@ public class SecondLevelNodeViewBinder extends BaseNodeViewBinder implements Mai
     MainContract.ViewBinderPresenter viewBinderPresenter;
 
 
-    public SecondLevelNodeViewBinder(View itemView, Context context, MainContract.MainActivityView mView, CoreModel coreModel) {
+    public SecondLevelNodeViewBinder(View itemView, MainContract.MainActivityView mView, Context context) {
         super(itemView);
         textView = (TextView) itemView.findViewById(R.id.node_name_view);
         imageView = (ImageView) itemView.findViewById(R.id.arrow_img);
-        viewBinderPresenter = new ViewBinderPresenter(mView, coreModel, this);
+        viewBinderPresenter = new ViewBinderPresenter(mView, this, context);
     }
 
     @Override
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/ThirdLevelNodeViewBinder.java b/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/ThirdLevelNodeViewBinder.java
index 07ba470..56f026c 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/ThirdLevelNodeViewBinder.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/nodeViewBinders/ThirdLevelNodeViewBinder.java
@@ -9,16 +9,15 @@ import me.texy.treeview.base.BaseNodeViewBinder;
 import ru.volgorobot.vrcatalog.MainContract;
 import ru.volgorobot.vrcatalog.R;
 import ru.volgorobot.vrcatalog.ViewBinderPresenter;
-import ru.volgorobot.vrcatalog.model.CoreModel;
 import ru.volgorobot.vrcatalog.model.ThirdLevelModel;
 
 public class ThirdLevelNodeViewBinder extends BaseNodeViewBinder implements MainContract.ViewBinder {
     TextView textView;
     MainContract.ViewBinderPresenter viewBinderPresenter;
 
-    public ThirdLevelNodeViewBinder(View itemView, Context context, MainContract.MainActivityView mView, CoreModel coreModel) {
+    public ThirdLevelNodeViewBinder(View itemView, Context context, MainContract.MainActivityView mView) {
         super(itemView);
-        viewBinderPresenter = new ViewBinderPresenter(mView, coreModel, this, context);
+        viewBinderPresenter = new ViewBinderPresenter(mView, this, context);
         textView = itemView.findViewById(R.id.node_name_view);
     }
 
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/searchNodeViewBinders/FirstLevelNodeViewBinder.java b/app/src/main/java/ru/volgorobot/vrcatalog/searchNodeViewBinders/FirstLevelNodeViewBinder.java
new file mode 100644
index 0000000..674cc54
--- /dev/null
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/searchNodeViewBinders/FirstLevelNodeViewBinder.java
@@ -0,0 +1,39 @@
+package ru.volgorobot.vrcatalog.searchNodeViewBinders;
+
+import android.view.View;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import me.texy.treeview.TreeNode;
+import me.texy.treeview.base.BaseNodeViewBinder;
+import ru.volgorobot.vrcatalog.R;
+
+public class FirstLevelNodeViewBinder extends BaseNodeViewBinder {
+    TextView textView;
+    ImageView imageView;
+
+    public FirstLevelNodeViewBinder(View itemView) {
+        super(itemView);
+        textView = (TextView) itemView.findViewById(R.id.node_name_view);
+        imageView = (ImageView) itemView.findViewById(R.id.arrow_img);
+    }
+
+    @Override
+    public int getLayoutId() {
+        return R.layout.first_level_item;
+    }
+
+    @Override
+    public void bindView(TreeNode treeNode) {
+        textView.setText(treeNode.getValue().toString());
+    }
+
+    @Override
+    public void onNodeToggled(TreeNode treeNode, boolean expand) {
+        if(expand) {
+            imageView.animate().rotation(90).setDuration(200).start();
+        } else {
+            imageView.animate().rotation(0).setDuration(200).start();
+        }
+    }
+}
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/searchNodeViewBinders/SecondLevelNodeViewBinder.java b/app/src/main/java/ru/volgorobot/vrcatalog/searchNodeViewBinders/SecondLevelNodeViewBinder.java
new file mode 100644
index 0000000..8718470
--- /dev/null
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/searchNodeViewBinders/SecondLevelNodeViewBinder.java
@@ -0,0 +1,39 @@
+package ru.volgorobot.vrcatalog.searchNodeViewBinders;
+
+import android.view.View;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import me.texy.treeview.TreeNode;
+import me.texy.treeview.base.BaseNodeViewBinder;
+import ru.volgorobot.vrcatalog.R;
+
+public class SecondLevelNodeViewBinder extends BaseNodeViewBinder {
+    TextView textView;
+    ImageView imageView;
+
+    public SecondLevelNodeViewBinder(View itemView) {
+        super(itemView);
+        textView = (TextView) itemView.findViewById(R.id.node_name_view);
+        imageView = (ImageView) itemView.findViewById(R.id.arrow_img);
+    }
+
+    @Override
+    public int getLayoutId() {
+        return R.layout.second_level_item;
+    }
+
+    @Override
+    public void bindView(TreeNode treeNode) {
+        textView.setText(treeNode.getValue().toString());
+    }
+
+    @Override
+    public void onNodeToggled(TreeNode treeNode, boolean expand) {
+        if(expand) {
+            imageView.animate().rotation(90).setDuration(200).start();
+        } else {
+            imageView.animate().rotation(0).setDuration(200).start();
+        }
+    }
+}
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/view/MainActivity.java b/app/src/main/java/ru/volgorobot/vrcatalog/view/MainActivity.java
index 88a25af..a89b0f9 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/view/MainActivity.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/view/MainActivity.java
@@ -1,16 +1,23 @@
 package ru.volgorobot.vrcatalog.view;
 
+import android.app.SearchManager;
+import android.content.ComponentName;
+import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
 import android.support.design.widget.NavigationView;
 import android.support.v4.view.GravityCompat;
+import android.support.v4.view.MenuItemCompat;
 import android.support.v4.widget.DrawerLayout;
 import android.support.v4.widget.SwipeRefreshLayout;
 import android.support.v7.app.ActionBarDrawerToggle;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.DefaultItemAnimator;
+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.view.ViewGroup;
 import android.widget.Toast;
@@ -155,6 +162,19 @@ public class MainActivity extends AppCompatActivity
     public void startActivityByIntent(Intent intent) {
         startActivity(intent);
     }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        MenuInflater inflater = getMenuInflater();
+        inflater.inflate(R.menu.main, menu);
+
+        SearchView search = (SearchView) MenuItemCompat.getActionView(menu.findItem(R.id.action_search));
+        SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
+        search.setSearchableInfo(searchManager.getSearchableInfo(new ComponentName(this, SearchableActivity.class)));
+        search.setQueryHint("Имя детали");
+        return true;
+    }
+
 }
 
 
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/view/SearchableActivity.java b/app/src/main/java/ru/volgorobot/vrcatalog/view/SearchableActivity.java
new file mode 100644
index 0000000..12e4436
--- /dev/null
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/view/SearchableActivity.java
@@ -0,0 +1,117 @@
+package ru.volgorobot.vrcatalog.view;
+
+import android.app.SearchManager;
+import android.content.Intent;
+import android.support.v4.widget.SwipeRefreshLayout;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.support.v7.widget.DefaultItemAnimator;
+import android.util.Log;
+import android.view.MenuItem;
+import android.view.ViewGroup;
+import android.widget.Toast;
+
+import java.util.ArrayList;
+
+import me.texy.treeview.TreeNode;
+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.NodeViewFactory;
+import ru.volgorobot.vrcatalog.additional.SearchableNodeViewFactory;
+import ru.volgorobot.vrcatalog.model.FirstLevelModel;
+
+public class SearchableActivity extends AppCompatActivity implements MainContract.SearchableActivityView, MainContract.MainActivityView, SwipeRefreshLayout.OnRefreshListener {
+    private SearchablePresenter searchablePresenter;
+    private SwipeRefreshLayout mSwipeRefreshLayout;
+    private String detailName;
+    private TreeView treeView;
+    private TreeNode rootNode = TreeNode.root();
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_searchable);
+        searchablePresenter = new SearchablePresenter(this, SearchableActivity.this);
+
+        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+        getSupportActionBar().setHomeButtonEnabled(true);
+
+        mSwipeRefreshLayout = findViewById(R.id.searchableSwipeRefreshLayout);
+        mSwipeRefreshLayout.setOnRefreshListener(SearchableActivity.this);
+        mSwipeRefreshLayout.setColorSchemeResources(R.color.colorPrimary);
+
+        treeView = new TreeView(rootNode, SearchableActivity.this, new SearchableNodeViewFactory(SearchableActivity.this, this));
+        treeView.setItemAnimator(new DefaultItemAnimator());
+        ((ViewGroup) findViewById(R.id.searchableTreeViewContainer)).addView(treeView.getView());
+        Intent intent = getIntent();
+        if (Intent.ACTION_SEARCH.equals(intent.getAction())) {
+            detailName = intent.getStringExtra(SearchManager.QUERY);
+            searchablePresenter.fetchDetailsTreeByName(detailName);
+        }
+    }
+
+    @Override
+    public void setTreeViewChildren(ArrayList<TreeNode> children) {
+        rootNode.setChildren(children);
+        treeView.refreshTreeView();
+    }
+
+    public void onFailureAnswer(int errorCode) {
+        switch (errorCode) {
+            case 1: {
+                Toast.makeText(SearchableActivity.this, "Ошибка сети. Проверьте подключение к сети или данные подключения к API!", Toast.LENGTH_LONG).show();
+                Log.e("VRCatalog", "Network Error! Re-check your connection credentials or network settings! Technical info: null");
+                mSwipeRefreshLayout.setRefreshing(false);
+                break;
+            }
+            case 2: {
+                Toast.makeText(SearchableActivity.this, "Ответ от сервера неверен! Перепроверьте данные подключения!", Toast.LENGTH_LONG).show();
+                Log.e("VRCatalog", "Answer of server is wrong! Re-check your connection credentials! Technical info: null");
+                mSwipeRefreshLayout.setRefreshing(false);
+                break;
+            }
+            case 3: {
+                Toast.makeText(SearchableActivity.this, "Вы ввели неверный URL. Пример: http://example.ru", Toast.LENGTH_LONG).show();
+                mSwipeRefreshLayout.setRefreshing(false);
+                break;
+            }
+        }
+    }
+
+    @Override
+    public void onRefresh() {
+        searchablePresenter.fetchDetailsTreeByName(detailName);
+    }
+
+    @Override
+    public void swipeLayoutSetRefreshing(boolean state) {
+        mSwipeRefreshLayout.setRefreshing(state);
+    }
+
+    @Override
+    public void refreshTree() {
+        treeView.refreshTreeView();
+    }
+
+    @Override
+    public void startActivityByIntent(Intent intent) {
+        startActivity(intent);
+    }
+
+    @Override
+    public void buildFirstLevelTree(ArrayList<FirstLevelModel> firstLevelModels) {
+        // This is for compatibility. Nothing to implement.
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch(item.getItemId()) {
+            case android.R.id.home:
+                finish();
+                return true;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+}
diff --git a/app/src/main/res/layout/activity_searchable.xml b/app/src/main/res/layout/activity_searchable.xml
new file mode 100644
index 0000000..3af0744
--- /dev/null
+++ b/app/src/main/res/layout/activity_searchable.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    app:layout_behavior="@string/appbar_scrolling_view_behavior"
+    tools:context=".view.MainActivity"
+    tools:showIn="@layout/app_bar_main"
+    android:orientation="horizontal"
+    android:id="@+id/searchableSwipeRefreshLayout">
+
+    <android.support.v4.widget.NestedScrollView
+        android:id="@+id/searchableTreeViewContainer"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:scrollbarAlwaysDrawVerticalTrack="true">
+    </android.support.v4.widget.NestedScrollView>
+
+
+</android.support.v4.widget.SwipeRefreshLayout>
\ No newline at end of file
diff --git a/app/src/main/res/menu/main.xml b/app/src/main/res/menu/main.xml
index 169bf73..e515c31 100644
--- a/app/src/main/res/menu/main.xml
+++ b/app/src/main/res/menu/main.xml
@@ -1,4 +1,10 @@
 <?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_search"
+        android:icon="@android:drawable/ic_menu_search"
+        app:showAsAction="always|collapseActionView"
+        app:actionViewClass="android.support.v7.widget.SearchView"
+        android:title="Поиск"/>
 </menu>
diff --git a/app/src/main/res/xml/searchable.xml b/app/src/main/res/xml/searchable.xml
new file mode 100644
index 0000000..c913d4b
--- /dev/null
+++ b/app/src/main/res/xml/searchable.xml
@@ -0,0 +1,5 @@
+<?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" >
+</searchable>
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index 03de3f4..47d59f1 100644
--- a/build.gradle
+++ b/build.gradle
@@ -8,7 +8,7 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.2.1'
+        classpath 'com.android.tools.build:gradle:3.3.0'
         
 
         // NOTE: Do not place your application dependencies here; they belong
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 3f0f9be..978d9da 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,6 @@
+#Tue Jan 15 18:33:56 MSK 2019
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-all.zip

From 4b4be1f1d159edf495d9b8d4bb68b757508bf06d Mon Sep 17 00:00:00 2001
From: ChronosX88 <chronosx88@gmail.com>
Date: Wed, 16 Jan 2019 21:23:59 +0400
Subject: [PATCH 4/6] Fixed bug when starting search (work on main thread and
 fixed bug which related with treeview UI.

---
 .idea/assetWizardSettings.xml                 |  10 +-
 .../vrcatalog/SearchablePresenter.java        | 219 +++++++-----------
 .../vrcatalog/view/SearchableActivity.java    |   4 +-
 app/src/main/res/menu/main.xml                |   2 +-
 4 files changed, 96 insertions(+), 139 deletions(-)

diff --git a/.idea/assetWizardSettings.xml b/.idea/assetWizardSettings.xml
index e64e3f9..bea7a4f 100644
--- a/.idea/assetWizardSettings.xml
+++ b/.idea/assetWizardSettings.xml
@@ -3,6 +3,11 @@
   <component name="WizardSettings">
     <option name="children">
       <map>
+        <entry key="imageWizard">
+          <value>
+            <PersistentState />
+          </value>
+        </entry>
         <entry key="vectorWizard">
           <value>
             <PersistentState>
@@ -18,7 +23,7 @@
                                 <PersistentState>
                                   <option name="values">
                                     <map>
-                                      <entry key="url" value="jar:file:/home/chronosx/Документы/bin/Android%20Studio/plugins/android/lib/android.jar!/images/material_design_icons/hardware/ic_keyboard_arrow_right_black_24dp.xml" />
+                                      <entry key="url" value="jar:file:/home/chronosx/%D0%94%D0%BE%D0%BA%D1%83%D0%BC%D0%B5%D0%BD%D1%82%D1%8B/bin/Android%20Studio/plugins/android/lib/android.jar!/images/material_design_icons/action/ic_search_black_24dp.xml" />
                                     </map>
                                   </option>
                                 </PersistentState>
@@ -28,7 +33,8 @@
                         </option>
                         <option name="values">
                           <map>
-                            <entry key="outputName" value="ic_keyboard_arrow_right_black_24dp" />
+                            <entry key="color" value="ffffff" />
+                            <entry key="outputName" value="ic_search_white_24dp" />
                             <entry key="sourceFile" value="$USER_HOME$" />
                           </map>
                         </option>
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/SearchablePresenter.java b/app/src/main/java/ru/volgorobot/vrcatalog/SearchablePresenter.java
index 324c74f..fac2f76 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/SearchablePresenter.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/SearchablePresenter.java
@@ -1,14 +1,13 @@
 package ru.volgorobot.vrcatalog;
 
+import android.app.Activity;
 import android.content.Context;
 import android.os.AsyncTask;
 
 import java.util.ArrayList;
-import java.util.concurrent.ExecutionException;
 
 import me.texy.treeview.TreeNode;
 import ru.volgorobot.vrcatalog.additional.NetworkErrorException;
-import ru.volgorobot.vrcatalog.additional.ResultWithErrorCode;
 import ru.volgorobot.vrcatalog.model.CoreModel;
 import ru.volgorobot.vrcatalog.model.FirstLevelModel;
 import ru.volgorobot.vrcatalog.model.SecondLevelModel;
@@ -17,35 +16,86 @@ import ru.volgorobot.vrcatalog.model.ThirdLevelModel;
 public class SearchablePresenter implements MainContract.SearchablePresenter {
     private MainContract.SearchableActivityView mView;
     private MainContract.MainModel coreModel;
+    private Activity activity;
 
-    public SearchablePresenter(MainContract.SearchableActivityView mView, Context context) {
+    public SearchablePresenter(MainContract.SearchableActivityView mView, Context context, Activity activity) {
         this.mView = mView;
         this.coreModel = new CoreModel(context);
+        this.activity = activity;
     }
 
     @Override
     public void fetchDetailsTreeByName(String name) {
+        mView.swipeLayoutSetRefreshing(true);
         ArrayList<FirstLevelModel> categories = new ArrayList<>();
         ArrayList<SecondLevelModel> subcategories = new ArrayList<>();
         ArrayList<ThirdLevelModel> details = new ArrayList<>();
 
-        try {
-            FetchDetailsByNameTask fetchDetailsByNameTask = new FetchDetailsByNameTask();
-            FetchCategoryByIDTask fetchCategoryByIDTask = new FetchCategoryByIDTask();
-            FetchSubCategoryByIDTask fetchSubCategoryByIDTask = new FetchSubCategoryByIDTask();
 
-            details.addAll(new FetchDetailsByNameTask().execute(name).get().getData());
-            for (int i = 0; i < details.size(); i++) {
-                subcategories.add(new FetchSubCategoryByIDTask().execute(details.get(i).getDetailSubTypeId()).get().getData());
+        new AsyncTask<Void, Void, Integer>() {
+            @Override
+            protected Integer doInBackground(Void... voids) {
+                try {
+                    try {
+                        details.addAll(coreModel.fetchDetailsByName(name));
+                    } catch (NetworkErrorException networkErrorException) {
+                        return networkErrorException.getErrorCode();
+                    } catch (NullPointerException nullPointerException) {
+                        return 3;
+                    }
+
+                    for (int i = 0; i < details.size(); i++) {
+                        try {
+                            if(isHaveDuplicate(subcategories,details.get(i).getDetailSubTypeId()))
+                                continue;
+                            subcategories.add(coreModel.fetchSubCategoryByID(details.get(i).getDetailSubTypeId()).get(0));
+                        } catch (NetworkErrorException networkErrorException) {
+                            return networkErrorException.getErrorCode();
+                        } catch (NullPointerException nullPointerException) {
+                            return 3;
+                        }
+                    }
+
+                    for (int i = 0; i < subcategories.size(); i++) {
+                        try {
+                            if(isHaveDuplicate(categories, subcategories.get(i).getDetailTypeId()))
+                                continue;
+                            categories.add(coreModel.fetchCategoryByID(subcategories.get(i).getDetailTypeId()).get(0));
+                        } catch (NetworkErrorException networkErrorException) {
+                            return networkErrorException.getErrorCode();
+                        } catch (NullPointerException nullPointerException) {
+                            return 3;
+                        }
+                    }
+                } catch (Exception e) {
+                    //
+                }
+                return 0;
             }
-            for (int i = 0; i < subcategories.size(); i++) {
-                categories.add(new FetchCategoryByIDTask().execute(subcategories.get(i).getDetailTypeId()).get().getData());
+
+            @Override
+            protected void onPostExecute(Integer resultCode) {
+                super.onPostExecute(resultCode);
+                switch (resultCode) {
+                    case 0: {
+                        //
+                        break;
+                    }
+                    case 1: {
+                        mView.onFailureAnswer(1);
+                        break;
+                    }
+                    case 2: {
+                        mView.onFailureAnswer(2);
+                        break;
+                    }
+                    case 3: {
+                        mView.onFailureAnswer(3);
+                        break;
+                    }
+                }
             }
-        } catch (ExecutionException e) {
-            //
-        } catch (InterruptedException e) {
-            //
-        }
+        }.execute();
 
         new AsyncTask<Void, Void, ArrayList<TreeNode>>() {
             @Override
@@ -53,15 +103,20 @@ public class SearchablePresenter implements MainContract.SearchablePresenter {
                 ArrayList<TreeNode> treeNodes = new ArrayList<>();
                 for (int i = 0; i < categories.size(); i++) {
                     treeNodes.add(new TreeNode(categories.get(i)));
+                    treeNodes.get(i).setLevel(0);
                     ArrayList<SecondLevelModel> secondLevelModels = getSecondModelsByCategoryID(subcategories, categories.get(i).getID());
                     for (int j = 0; j < secondLevelModels.size(); j++) {
-                        treeNodes.get(i).addChild(new TreeNode(secondLevelModels.get(j)));
+                        TreeNode treeNode = new TreeNode(secondLevelModels.get(j));
+                        treeNode.setLevel(1);
+                        treeNodes.get(i).addChild(treeNode);
                     }
                     ArrayList<TreeNode> subnodes = (ArrayList<TreeNode>) treeNodes.get(i).getChildren();
                     for (int j = 0; j < subnodes.size(); j++) {
                         ArrayList<ThirdLevelModel> thirdLevelModels = getDetailsByCategoryID(details, ((SecondLevelModel) subnodes.get(j).getValue()).getID());
                         for (int k = 0; k < thirdLevelModels.size(); k++) {
-                            subnodes.get(j).addChild(new TreeNode(thirdLevelModels.get(k)));
+                            TreeNode treeNode = new TreeNode(thirdLevelModels.get(k));
+                            treeNode.setLevel(2);
+                            subnodes.get(j).addChild(treeNode);
                         }
                     }
                 }
@@ -83,7 +138,7 @@ public class SearchablePresenter implements MainContract.SearchablePresenter {
             if(secondLevelModels.get(i).getDetailTypeId() == id)
                 secondLevelModelsByCategoryID.add(secondLevelModels.get(i));
         }
-        
+
         return secondLevelModelsByCategoryID;
     }
 
@@ -97,123 +152,19 @@ public class SearchablePresenter implements MainContract.SearchablePresenter {
         return thirdLevelModelsBySubcategoryID;
     }
 
-    class FetchDetailsByNameTask extends AsyncTask<String, Void, ResultWithErrorCode<ArrayList<ThirdLevelModel>>> {
-        @Override
-        protected void onPreExecute() {
-            super.onPreExecute();
-            mView.swipeLayoutSetRefreshing(true);
-        }
-
-        @Override
-        protected ResultWithErrorCode<ArrayList<ThirdLevelModel>> doInBackground(String... strings) {
-            ArrayList<ThirdLevelModel> details = new ArrayList<>();
-            try {
-                details.addAll(coreModel.fetchDetailsByName(strings[0]));
-            } catch (NetworkErrorException networkErrorException) {
-                return new ResultWithErrorCode<>(details, networkErrorException.getErrorCode());
-            } catch (NullPointerException nullPointerException) {
-                return new ResultWithErrorCode<>(details, 3);
-            }
-            return new ResultWithErrorCode<>(details, 0);
-        }
-
-        @Override
-        protected void onPostExecute(ResultWithErrorCode<ArrayList<ThirdLevelModel>> result) {
-            super.onPostExecute(result);
-            switch (result.getErrorCode()) {
-                case 0: {
-                    //
-                    break;
-                }
-                case 1: {
-                    mView.onFailureAnswer(1);
-                    break;
-                }
-                case 2: {
-                    mView.onFailureAnswer(2);
-                    break;
-                }
-                case 3: {
-                    mView.onFailureAnswer(3);
-                    break;
-                }
-            }
+    private boolean isHaveDuplicate(ArrayList<SecondLevelModel> secondLevelModels, int subcatID) {
+        for (int i = 0; i < secondLevelModels.size(); i++) {
+            if(secondLevelModels.get(i).getID() == subcatID)
+                return true;
         }
+        return false;
     }
 
-    class FetchCategoryByIDTask extends AsyncTask<Integer, Void, ResultWithErrorCode<FirstLevelModel>> {
-        @Override
-        protected ResultWithErrorCode<FirstLevelModel> doInBackground(Integer... integers) {
-            FirstLevelModel firstLevelModel;
-            try {
-                firstLevelModel = coreModel.fetchCategoryByID(integers[0]).get(0);
-            } catch (NetworkErrorException networkErrorException) {
-                return new ResultWithErrorCode<>(null, networkErrorException.getErrorCode());
-            } catch (NullPointerException nullPointerException) {
-                return new ResultWithErrorCode<>(null, 3);
-            }
-            return new ResultWithErrorCode<>(firstLevelModel, 0);
-        }
-
-        @Override
-        protected void onPostExecute(ResultWithErrorCode<FirstLevelModel> result) {
-            super.onPostExecute(result);
-            switch (result.getErrorCode()) {
-                case 0: {
-                    // Nothing to do.
-                    break;
-                }
-                case 1: {
-                    mView.onFailureAnswer(1);
-                    break;
-                }
-                case 2: {
-                    mView.onFailureAnswer(2);
-                    break;
-                }
-                case 3: {
-                    mView.onFailureAnswer(3);
-                    break;
-                }
-            }
-        }
-    }
-
-    class FetchSubCategoryByIDTask extends AsyncTask<Integer, Void, ResultWithErrorCode<SecondLevelModel>> {
-        @Override
-        protected ResultWithErrorCode<SecondLevelModel> doInBackground(Integer... integers) {
-            SecondLevelModel secondLevelModel;
-            try {
-                secondLevelModel = coreModel.fetchSubCategoryByID(integers[0]).get(0);
-            } catch (NetworkErrorException networkErrorException) {
-                return new ResultWithErrorCode<>(null, networkErrorException.getErrorCode());
-            } catch (NullPointerException nullPointerException) {
-                return new ResultWithErrorCode<>(null, 3);
-            }
-            return new ResultWithErrorCode<>(secondLevelModel, 0);
-        }
-
-        @Override
-        protected void onPostExecute(ResultWithErrorCode<SecondLevelModel> result) {
-            super.onPostExecute(result);
-            switch (result.getErrorCode()) {
-                case 0: {
-                    // Nothing to do.
-                    break;
-                }
-                case 1: {
-                    mView.onFailureAnswer(1);
-                    break;
-                }
-                case 2: {
-                    mView.onFailureAnswer(2);
-                    break;
-                }
-                case 3: {
-                    mView.onFailureAnswer(3);
-                    break;
-                }
-            }
+    private boolean isHaveDuplicate(ArrayList<FirstLevelModel> firstLevelModels, Integer catID) {
+        for (int i = 0; i < firstLevelModels.size(); i++) {
+            if(firstLevelModels.get(i).getID().equals(catID))
+                return true;
         }
+        return false;
     }
 }
diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/view/SearchableActivity.java b/app/src/main/java/ru/volgorobot/vrcatalog/view/SearchableActivity.java
index 12e4436..141c8fa 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/view/SearchableActivity.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/view/SearchableActivity.java
@@ -18,7 +18,6 @@ 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.NodeViewFactory;
 import ru.volgorobot.vrcatalog.additional.SearchableNodeViewFactory;
 import ru.volgorobot.vrcatalog.model.FirstLevelModel;
 
@@ -33,7 +32,7 @@ public class SearchableActivity extends AppCompatActivity implements MainContrac
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_searchable);
-        searchablePresenter = new SearchablePresenter(this, SearchableActivity.this);
+        searchablePresenter = new SearchablePresenter(this, SearchableActivity.this, this);
 
         getSupportActionBar().setDisplayHomeAsUpEnabled(true);
         getSupportActionBar().setHomeButtonEnabled(true);
@@ -55,6 +54,7 @@ public class SearchableActivity extends AppCompatActivity implements MainContrac
     @Override
     public void setTreeViewChildren(ArrayList<TreeNode> children) {
         rootNode.setChildren(children);
+        treeView.expandAll();
         treeView.refreshTreeView();
     }
 
diff --git a/app/src/main/res/menu/main.xml b/app/src/main/res/menu/main.xml
index e515c31..c4d297b 100644
--- a/app/src/main/res/menu/main.xml
+++ b/app/src/main/res/menu/main.xml
@@ -3,7 +3,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto">
     <item
         android:id="@+id/action_search"
-        android:icon="@android:drawable/ic_menu_search"
+        android:icon="@drawable/ic_search_white_24dp"
         app:showAsAction="always|collapseActionView"
         app:actionViewClass="android.support.v7.widget.SearchView"
         android:title="Поиск"/>

From 47eff36c1c5ea9583e94eda64c701f34f6d38412 Mon Sep 17 00:00:00 2001
From: ChronosX88 <chronosx88@gmail.com>
Date: Wed, 16 Jan 2019 21:29:17 +0400
Subject: [PATCH 5/6] Made changing title of action bar in SearchableActivity
 (like "Search: detailName").

---
 .../java/ru/volgorobot/vrcatalog/view/SearchableActivity.java    | 1 +
 1 file changed, 1 insertion(+)

diff --git a/app/src/main/java/ru/volgorobot/vrcatalog/view/SearchableActivity.java b/app/src/main/java/ru/volgorobot/vrcatalog/view/SearchableActivity.java
index 141c8fa..612fe25 100644
--- a/app/src/main/java/ru/volgorobot/vrcatalog/view/SearchableActivity.java
+++ b/app/src/main/java/ru/volgorobot/vrcatalog/view/SearchableActivity.java
@@ -47,6 +47,7 @@ public class SearchableActivity extends AppCompatActivity implements MainContrac
         Intent intent = getIntent();
         if (Intent.ACTION_SEARCH.equals(intent.getAction())) {
             detailName = intent.getStringExtra(SearchManager.QUERY);
+            getSupportActionBar().setTitle("Поиск: " + detailName);
             searchablePresenter.fetchDetailsTreeByName(detailName);
         }
     }

From 50c75ad0976373387a8b8a8694a43a2c04f90552 Mon Sep 17 00:00:00 2001
From: ChronosX88 <chronosx88@gmail.com>
Date: Wed, 16 Jan 2019 21:32:41 +0400
Subject: [PATCH 6/6] Text appearance to Large set

---
 app/src/main/res/layout/activity_about.xml | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/app/src/main/res/layout/activity_about.xml b/app/src/main/res/layout/activity_about.xml
index f89d895..0309d04 100644
--- a/app/src/main/res/layout/activity_about.xml
+++ b/app/src/main/res/layout/activity_about.xml
@@ -18,8 +18,7 @@
             android:layout_height="wrap_content"
             android:gravity="center"
             android:text="VRCatalog"
-            android:textAppearance="@android:style/TextAppearance.Material.Large"
-            android:textStyle="bold" />
+            android:textAppearance="@android:style/TextAppearance.Large" />
 
         <TextView
             android:id="@+id/textView2"