From b260a19be7172ad34487669a02c3002bc234b3b2 Mon Sep 17 00:00:00 2001
From: Matthew Wong <wongma@protonmail.ch>
Date: Fri, 14 Aug 2015 01:43:40 -0400
Subject: App filtering

---
 .../autofill/AutofillPreferenceActivity.java       | 36 +++++--------------
 .../pwdstore/autofill/AutofillRecyclerAdapter.java | 42 +++++++++++++++++++---
 2 files changed, 46 insertions(+), 32 deletions(-)

diff --git a/app/src/main/java/com/zeapo/pwdstore/autofill/AutofillPreferenceActivity.java b/app/src/main/java/com/zeapo/pwdstore/autofill/AutofillPreferenceActivity.java
index 788442a0..1170d7b7 100644
--- a/app/src/main/java/com/zeapo/pwdstore/autofill/AutofillPreferenceActivity.java
+++ b/app/src/main/java/com/zeapo/pwdstore/autofill/AutofillPreferenceActivity.java
@@ -19,9 +19,6 @@ import android.view.View;
 
 import com.zeapo.pwdstore.R;
 
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.Comparator;
 import java.util.List;
 
 public class AutofillPreferenceActivity extends AppCompatActivity {
@@ -52,31 +49,25 @@ public class AutofillPreferenceActivity extends AppCompatActivity {
         setTitle("Autofill Apps");
     }
 
-    private class populateTask extends AsyncTask<Void, Void, List<ResolveInfo>> {
+    private class populateTask extends AsyncTask<Void, Void, Void> {
         @Override
         protected void onPreExecute() {
             findViewById(R.id.progress_bar).setVisibility(View.VISIBLE);
         }
 
         @Override
-        protected List<ResolveInfo> doInBackground(Void... params) {
+        protected Void doInBackground(Void... params) {
             Intent intent = new Intent(Intent.ACTION_MAIN);
             intent.addCategory(Intent.CATEGORY_LAUNCHER);
             List<ResolveInfo> allApps = pm.queryIntentActivities(intent, 0);
-            Collections.sort(allApps, new Comparator<ResolveInfo>() {
-                @Override
-                public int compare(ResolveInfo lhs, ResolveInfo rhs) {
-                    return lhs.loadLabel(pm).toString().compareTo(rhs.loadLabel(pm).toString());
-                }
-            });
-            return allApps;
+            recyclerAdapter = new AutofillRecyclerAdapter(allApps, pm, AutofillPreferenceActivity.this);
+            return null;
         }
 
         @Override
-        protected void onPostExecute(List<ResolveInfo> allApps) {
+        protected void onPostExecute(Void aVoid) {
             findViewById(R.id.progress_bar).setVisibility(View.GONE);
 
-            recyclerAdapter = new AutofillRecyclerAdapter(new ArrayList<>(allApps), pm, AutofillPreferenceActivity.this);
             recyclerView.setAdapter(recyclerAdapter);
 
             recreate = false;
@@ -104,24 +95,13 @@ public class AutofillPreferenceActivity extends AppCompatActivity {
 
             @Override
             public boolean onQueryTextChange(String s) {
-                recyclerAdapter.filter(s);
+                if (recyclerAdapter != null) {
+                    recyclerAdapter.filter(s);
+                }
                 return true;
             }
         });
 
-        // When using the support library, the setOnActionExpandListener() method is
-        // static and accepts the MenuItem object as an argument
-        MenuItemCompat.setOnActionExpandListener(searchItem, new MenuItemCompat.OnActionExpandListener() {
-            @Override
-            public boolean onMenuItemActionCollapse(MenuItem item) {
-                return true;
-            }
-
-            @Override
-            public boolean onMenuItemActionExpand(MenuItem item) {
-                return true;
-            }
-        });
         return super.onCreateOptionsMenu(menu);
     }
 
diff --git a/app/src/main/java/com/zeapo/pwdstore/autofill/AutofillRecyclerAdapter.java b/app/src/main/java/com/zeapo/pwdstore/autofill/AutofillRecyclerAdapter.java
index 485ef288..2162b53d 100644
--- a/app/src/main/java/com/zeapo/pwdstore/autofill/AutofillRecyclerAdapter.java
+++ b/app/src/main/java/com/zeapo/pwdstore/autofill/AutofillRecyclerAdapter.java
@@ -4,7 +4,9 @@ import android.content.Context;
 import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
+import android.support.v7.util.SortedList;
 import android.support.v7.widget.RecyclerView;
+import android.support.v7.widget.util.SortedListAdapterCallback;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -14,9 +16,11 @@ import android.widget.TextView;
 import com.zeapo.pwdstore.R;
 
 import java.util.ArrayList;
+import java.util.List;
 
 public class AutofillRecyclerAdapter extends RecyclerView.Adapter<AutofillRecyclerAdapter.ViewHolder> {
-    private ArrayList<ResolveInfo> apps;
+    private SortedList<ResolveInfo> apps;
+    private ArrayList<ResolveInfo> allApps;
     private PackageManager pm;
     private AutofillPreferenceActivity activity;
 
@@ -43,8 +47,26 @@ public class AutofillRecyclerAdapter extends RecyclerView.Adapter<AutofillRecycl
 
     }
 
-    public AutofillRecyclerAdapter(ArrayList<ResolveInfo> apps, PackageManager pm, AutofillPreferenceActivity activity) {
-        this.apps = apps;
+    public AutofillRecyclerAdapter(List<ResolveInfo> allApps, final PackageManager pm, AutofillPreferenceActivity activity) {
+         SortedList.Callback<ResolveInfo> callback = new SortedListAdapterCallback<ResolveInfo>(this) {
+            @Override
+            public int compare(ResolveInfo o1, ResolveInfo o2) {
+                return o1.loadLabel(pm).toString().compareTo(o2.loadLabel(pm).toString());
+            }
+
+            @Override
+            public boolean areContentsTheSame(ResolveInfo oldItem, ResolveInfo newItem) {
+                return oldItem.loadLabel(pm).toString().equals(newItem.loadLabel(pm).toString());
+            }
+
+            @Override
+            public boolean areItemsTheSame(ResolveInfo item1, ResolveInfo item2) {
+                return item1.loadLabel(pm).toString().equals(item2.loadLabel(pm).toString());
+            }
+        };
+        this.apps = new SortedList<>(ResolveInfo.class, callback);
+        this.apps.addAll(allApps);
+        this.allApps = new ArrayList<>(allApps);
         this.pm = pm;
         this.activity = activity;
     }
@@ -102,6 +124,18 @@ public class AutofillRecyclerAdapter extends RecyclerView.Adapter<AutofillRecycl
     }
 
     public void filter(String s) {
-
+        if (s.isEmpty()) {
+            apps.addAll(allApps);
+            return;
+        }
+        apps.beginBatchedUpdates();
+        for (ResolveInfo app : allApps) {
+            if (app.loadLabel(pm).toString().toLowerCase().contains(s.toLowerCase())) {
+                apps.add(app);
+            } else {
+                apps.remove(app);
+            }
+        }
+        apps.endBatchedUpdates();
     }
 }
-- 
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