Merge pull request #843 from da-kid/master

Implemented Pull2Refresh

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/helper/KeyUpdateHelper.java

@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2014 Daniel Albert
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.helper;
+
+import android.content.Context;
+import android.content.Intent;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.os.Messenger;
+
+import org.sufficientlysecure.keychain.keyimport.HkpKeyserver;
+import org.sufficientlysecure.keychain.keyimport.ImportKeysListEntry;
+import org.sufficientlysecure.keychain.keyimport.Keyserver;
+import org.sufficientlysecure.keychain.provider.KeychainContract;
+import org.sufficientlysecure.keychain.provider.ProviderHelper;
+import org.sufficientlysecure.keychain.service.KeychainIntentService;
+import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
+import org.sufficientlysecure.keychain.util.Log;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class KeyUpdateHelper {
+
+    public void updateAllKeys(Context context, KeychainIntentServiceHandler finishedHandler) {
+        UpdateTask updateTask = new UpdateTask(context, finishedHandler);
+        updateTask.execute();
+    }
+
+    public ImportKeysListEntry getKeyByFingerprint(Context context, String fingerprint) {
+        String[] servers = Preferences.getPreferences(context).getKeyServers();
+        if (servers != null && servers.length != 0 && servers[0] != null) {
+            try {
+                HkpKeyserver hkp = new HkpKeyserver(servers[0]);
+                for (ImportKeysListEntry key : hkp.search("0x" + fingerprint)) {
+                    if (fingerprint.equals(key.getFingerprintHex())) {
+                        return key;
+                    }
+                }
+            } catch (Keyserver.QueryNeedsRepairException e) {
+            } catch (Keyserver.QueryFailedException e) {
+            }
+        }
+        return null;
+    }
+
+    private class UpdateTask extends AsyncTask<Void, Void, Void> {
+        private Context mContext;
+        private KeychainIntentServiceHandler mHandler;
+
+        public UpdateTask(Context context, KeychainIntentServiceHandler handler) {
+            this.mContext = context;
+            this.mHandler = handler;
+        }
+
+        @Override
+        protected Void doInBackground(Void... voids) {
+            ProviderHelper providerHelper = new ProviderHelper(mContext);
+            List<ImportKeysListEntry> keys = new ArrayList<ImportKeysListEntry>();
+            String[] servers = Preferences.getPreferences(mContext).getKeyServers();
+
+            if (servers != null && servers.length > 0) {
+                // Load all the fingerprints in the database and prepare to import them
+                for (String fprint : providerHelper.getAllFingerprints(KeychainContract.KeyRings.buildUnifiedKeyRingsUri())) {
+                    ImportKeysListEntry key = new ImportKeysListEntry();
+                    key.setFingerprintHex(fprint);
+                    key.setBitStrength(1337);
+                    key.setOrigin(servers[0]);
+                    keys.add(key);
+                }
+
+                // Start the service and update the keys
+                Intent importIntent = new Intent(mContext, KeychainIntentService.class);
+                importIntent.setAction(KeychainIntentService.ACTION_DOWNLOAD_AND_IMPORT_KEYS);
+
+                Bundle importData = new Bundle();
+                importData.putParcelableArrayList(KeychainIntentService.DOWNLOAD_KEY_LIST,
+                        new ArrayList<ImportKeysListEntry>(keys));
+                importIntent.putExtra(KeychainIntentService.EXTRA_DATA, importData);
+
+                importIntent.putExtra(KeychainIntentService.EXTRA_MESSENGER, new Messenger(mHandler));
+
+                mContext.startService(importIntent);
+            }
+            return null;
+        }
+    }
+}

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/provider/ProviderHelper.java

@@ -1312,6 +1312,27 @@ public class ProviderHelper {
         return keyIds;
     }
 
+    public Set<String> getAllFingerprints(Uri uri) {
+         Set<String> fingerprints = new HashSet<String>();
+         String[] projection = new String[]{KeyRings.FINGERPRINT};
+         Cursor cursor = mContentResolver.query(uri, projection, null, null, null);
+         try {
+             if(cursor != null) {
+                 int fingerprintColumn = cursor.getColumnIndex(KeyRings.FINGERPRINT);
+                 while(cursor.moveToNext()) {
+                     fingerprints.add(
+                            PgpKeyHelper.convertFingerprintToHex(cursor.getBlob(fingerprintColumn))
+                         );
+                     }
+                 }
+             } finally {
+             if (cursor != null) {
+                 cursor.close();
+                 }
+             }
+         return fingerprints;
+     }
+
     public byte[] getApiAppSignature(String packageName) {
         Uri queryUri = ApiApps.buildByPackageNameUri(packageName);
 

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/KeyListFragment.java

@@ -35,6 +35,7 @@ import android.support.v4.content.CursorLoader;
 import android.support.v4.content.Loader;
 import android.support.v4.view.MenuItemCompat;
 import android.support.v4.widget.CursorAdapter;
+import android.support.v4.widget.SwipeRefreshLayout;
 import android.support.v7.app.ActionBarActivity;
 import android.support.v7.widget.SearchView;
 import android.view.ActionMode;
@@ -55,9 +56,13 @@ import android.widget.TextView;
 import org.sufficientlysecure.keychain.Constants;
 import org.sufficientlysecure.keychain.R;
 import org.sufficientlysecure.keychain.helper.ExportHelper;
+import org.sufficientlysecure.keychain.helper.KeyUpdateHelper;
+import org.sufficientlysecure.keychain.helper.Preferences;
 import org.sufficientlysecure.keychain.pgp.KeyRing;
 import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
+import org.sufficientlysecure.keychain.service.KeychainIntentServiceHandler;
 import org.sufficientlysecure.keychain.ui.dialog.DeleteKeyDialogFragment;
+import org.sufficientlysecure.keychain.ui.widget.ListAwareSwipeRefreshLayout;
 import org.sufficientlysecure.keychain.util.Highlighter;
 import org.sufficientlysecure.keychain.util.Log;
 import org.sufficientlysecure.keychain.util.Notify;
@@ -74,10 +79,11 @@ import se.emilsjolander.stickylistheaders.StickyListHeadersListView;
  */
 public class KeyListFragment extends LoaderFragment
         implements SearchView.OnQueryTextListener, AdapterView.OnItemClickListener,
-        LoaderManager.LoaderCallbacks<Cursor> {
+        LoaderManager.LoaderCallbacks<Cursor>, SwipeRefreshLayout.OnRefreshListener {
 
     private KeyListAdapter mAdapter;
     private StickyListHeadersListView mStickyList;
+    private ListAwareSwipeRefreshLayout mSwipeRefreshLayout;
 
     // saves the mode object for multiselect, needed for reset at some point
     private ActionMode mActionMode = null;
@@ -120,9 +126,25 @@ public class KeyListFragment extends LoaderFragment
             }
         });
 
+        mSwipeRefreshLayout = (ListAwareSwipeRefreshLayout) view.findViewById(R.id.key_list_swipe_container);
+        mSwipeRefreshLayout.setOnRefreshListener(this);
+        mSwipeRefreshLayout.setColorScheme(
+                R.color.android_purple_dark,
+                R.color.android_purple_light,
+                R.color.android_purple_dark,
+                R.color.android_purple_light);
+        mSwipeRefreshLayout.setStickyListHeadersListView(mStickyList);
+
         return root;
     }
 
+    @Override
+    public void onResume() {
+        String[] servers = Preferences.getPreferences(getActivity()).getKeyServers();
+        mSwipeRefreshLayout.setIsLocked(servers == null || servers.length == 0 || servers[0] == null);
+        super.onResume();
+    }
+
     /**
      * Define Adapter and Loader on create of Activity
      */
@@ -690,4 +712,16 @@ public class KeyListFragment extends LoaderFragment
 
     }
 
+    /**
+     * Implements OnRefreshListener for drag-to-refresh
+     */
+    public void onRefresh() {
+        KeyUpdateHelper updateHelper = new KeyUpdateHelper();
+        KeychainIntentServiceHandler finishedHandler = new KeychainIntentServiceHandler(getActivity()) {
+            public void handleMessage(Message message) {
+                mSwipeRefreshLayout.setRefreshing(false);
+            }
+        };
+        updateHelper.updateAllKeys(getActivity(), finishedHandler);
+    }
 }

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/widget/ListAwareSwipeRefreshLayout.java

@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2014 Daniel Albert
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.sufficientlysecure.keychain.ui.widget;
+
+import android.content.Context;
+import android.support.v4.widget.SwipeRefreshLayout;
+import android.util.AttributeSet;
+
+import org.sufficientlysecure.keychain.util.Log;
+
+import se.emilsjolander.stickylistheaders.StickyListHeadersListView;
+
+public class ListAwareSwipeRefreshLayout extends SwipeRefreshLayout {
+
+
+    private StickyListHeadersListView mStickyListHeadersListView = null;
+    private boolean mIsLocked = false;
+
+    /**
+     * Constructors
+     */
+    public ListAwareSwipeRefreshLayout(Context context) {
+        super(context);
+    }
+    public ListAwareSwipeRefreshLayout(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    /**
+     * Getters / Setters
+     */
+    public void setStickyListHeadersListView(StickyListHeadersListView stickyListHeadersListView) {
+        mStickyListHeadersListView = stickyListHeadersListView;
+    }
+    public StickyListHeadersListView getStickyListHeadersListView() {
+        return mStickyListHeadersListView;
+    }
+
+    public void setIsLocked(boolean locked) {
+        mIsLocked = locked;
+        Log.d("ListAwareSwipeRefreshLayout", (mIsLocked ? "is locked" : "not locked"));
+    }
+    public boolean getIsLocked() {
+        return mIsLocked;
+    }
+
+    @Override
+    public boolean canChildScrollUp() {
+        if (mStickyListHeadersListView == null)
+            return super.canChildScrollUp();
+
+        return (
+            mIsLocked
+            ||
+            (
+                mStickyListHeadersListView.getWrappedList().getChildCount() > 0
+                &&
+                (
+                    mStickyListHeadersListView.getTop() > 0
+                    ||
+                    mStickyListHeadersListView.getFirstVisiblePosition() > 0
+                )
+            )
+        );
+    }
+}

OpenKeychain/src/main/res/layout/key_list_fragment.xml

@@ -1,11 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<org.sufficientlysecure.keychain.ui.widget.ListAwareSwipeRefreshLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/key_list_swipe_container"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical">
-
     <!--rebuild functionality of ListFragment -->
-
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
         <se.emilsjolander.stickylistheaders.StickyListHeadersListView
             android:id="@+id/key_list_list"
             android:layout_width="match_parent"
@@ -17,7 +20,6 @@
             android:paddingLeft="16dp"
             android:paddingRight="32dp"
             android:scrollbarStyle="outsideOverlay" />
-
         <LinearLayout
             android:id="@+id/key_list_empty"
             android:layout_width="match_parent"
@@ -25,21 +27,18 @@
             android:gravity="center"
             android:orientation="vertical"
             android:visibility="visible">
-
             <TextView
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:gravity="center"
                 android:text="@string/key_list_empty_text1"
                 android:textAppearance="?android:attr/textAppearanceLarge" />
-
             <TextView
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:gravity="center"
                 android:text=""
                 android:textAppearance="?android:attr/textAppearanceLarge" />
-
             <TextView
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
@@ -47,7 +46,6 @@
                 android:gravity="center"
                 android:text="@string/key_list_empty_text2"
                 android:textAppearance="?android:attr/textAppearanceSmall" />
-
             <Button
                 android:id="@+id/key_list_empty_button_create"
                 android:layout_width="wrap_content"
@@ -58,7 +56,6 @@
                 android:drawableLeft="@drawable/ic_action_new_account"
                 android:drawablePadding="8dp"
                 android:background="@drawable/button_edgy"/>
-
             <TextView
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
@@ -66,7 +63,6 @@
                 android:gravity="center"
                 android:text="@string/key_list_empty_text3"
                 android:textAppearance="?android:attr/textAppearanceSmall" />
-
             <Button
                 android:id="@+id/key_list_empty_button_import"
                 android:layout_width="wrap_content"
@@ -78,5 +74,5 @@
                 android:drawablePadding="8dp"
                 android:background="@drawable/button_edgy" />
         </LinearLayout>
-
     </FrameLayout>
+</org.sufficientlysecure.keychain.ui.widget.ListAwareSwipeRefreshLayout>