Pull to check email

TODO

@@ -13,8 +13,6 @@ Tasks:
 -- Optimize use of Android lifecycles
 
 Features:
-- Show check mail status in inbox list header
-- Pull-to-check
 - Import/export identities
 -- Export Destination / make it copyable
 - Show contact pictures in recipients dropdown

app/build.gradle

@@ -24,4 +24,5 @@ clean.dependsOn preclean
 dependencies {
     compile 'com.android.support:appcompat-v7:+'
     compile fileTree(dir: 'libs', include: '*.jar')
+    compile 'com.github.chrisbanes.actionbarpulltorefresh:extra-abc:+'
 }

app/src/main/java/i2p/bote/android/EmailListFragment.java

@@ -7,6 +7,10 @@ import java.util.List;
 import javax.mail.Flags.Flag;
 import javax.mail.MessagingException;
 
+import uk.co.senab.actionbarpulltorefresh.extras.actionbarcompat.PullToRefreshLayout;
+import uk.co.senab.actionbarpulltorefresh.library.ActionBarPullToRefresh;
+import uk.co.senab.actionbarpulltorefresh.library.Options;
+import uk.co.senab.actionbarpulltorefresh.library.listeners.OnRefreshListener;
 import net.i2p.I2PAppContext;
 import net.i2p.util.Log;
 import i2p.bote.I2PBote;
@@ -37,6 +41,7 @@ import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.View;
+import android.view.ViewGroup;
 import android.view.inputmethod.InputMethodManager;
 import android.widget.AdapterView;
 import android.widget.EditText;
@@ -46,13 +51,15 @@ import android.widget.TextView;
 public class EmailListFragment extends ListFragment implements
         LoaderManager.LoaderCallbacks<List<Email>>,
         MoveToDialogFragment.MoveToDialogListener,
-        EmailListAdapter.EmailSelector {
+        EmailListAdapter.EmailSelector, OnRefreshListener {
     public static final String FOLDER_NAME = "folder_name";
 
     private static final int EMAIL_LIST_LOADER = 1;
 
     OnEmailSelectedListener mCallback;
 
+    private PullToRefreshLayout mPullToRefreshLayout;
+
     private EmailListAdapter mAdapter;
     private EmailFolder mFolder;
     private ActionMode mMode;
@@ -94,10 +101,42 @@ public class EmailListFragment extends ListFragment implements
     }
 
     @Override
-    public void onActivityCreated(Bundle savedInstanceState) {
-        super.onActivityCreated(savedInstanceState);
+    public void onViewCreated(View view, Bundle savedInstanceState) {
+        super.onViewCreated(view,savedInstanceState);
         String folderName = getArguments().getString(FOLDER_NAME);
         mFolder = BoteHelper.getMailFolder(folderName);
+
+        if (BoteHelper.isInbox(mFolder)) {
+            // This is the View which is created by ListFragment
+            ViewGroup viewGroup = (ViewGroup) view;
+
+            // We need to create a PullToRefreshLayout manually
+            mPullToRefreshLayout = new PullToRefreshLayout(viewGroup.getContext());
+
+            // We can now setup the PullToRefreshLayout
+            ActionBarPullToRefresh.from(getActivity())
+
+                    // We need to insert the PullToRefreshLayout into the Fragment's ViewGroup
+                    .insertLayoutInto(viewGroup)
+
+                            // We need to mark the ListView and it's Empty View as pullable
+                            // This is because they are not dirent children of the ViewGroup
+                    .theseChildrenArePullable(getListView(), getListView().getEmptyView())
+
+                            // We can now complete the setup as desired
+                    .listener(this)
+                    .options(Options.create()
+                            .refreshOnUp(true)
+                            .build())
+                    .setup(mPullToRefreshLayout);
+
+            mPullToRefreshLayout.setRefreshing(I2PBote.getInstance().isCheckingForMail());
+        }
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
         mAdapter = new EmailListAdapter(getActivity(), this,
                 BoteHelper.isOutbox(mFolder));
 
@@ -461,4 +500,46 @@ public class EmailListFragment extends ListFragment implements
     public void select(int position) {
         onListItemSelect(position);
     }
+
+    // OnRefreshListener
+
+    public void onRefreshStarted(View view) {
+        I2PBote bote = I2PBote.getInstance();
+        if (bote.isConnected()) {
+            try {
+                if (!bote.isCheckingForMail())
+                    bote.checkForMail();
+
+                new AsyncTask<Void, Void, Void>() {
+                    @Override
+                    protected Void doInBackground(Void... params) {
+                        while (I2PBote.getInstance().isCheckingForMail()) {
+                            try {
+                                Thread.sleep(100);
+                            } catch (InterruptedException e) {}
+                        }
+                        return null;
+                    }
+
+                    @Override
+                    protected void onPostExecute(Void result) {
+                        super.onPostExecute(result);
+
+                        // Notify PullToRefreshLayout that the refresh has finished
+                        mPullToRefreshLayout.setRefreshComplete();
+                    }
+                }.execute();
+            } catch (PasswordException e) {
+                // TODO Auto-generated catch block
+                e.printStackTrace();
+            } catch (IOException e) {
+                // TODO Auto-generated catch block
+                e.printStackTrace();
+            } catch (GeneralSecurityException e) {
+                // TODO Auto-generated catch block
+                e.printStackTrace();
+            }
+        } else
+            mPullToRefreshLayout.setRefreshComplete();
+    }
 }

app/src/main/java/i2p/bote/android/util/BoteHelper.java

@@ -202,6 +202,14 @@ public class BoteHelper extends GeneralHelper {
         }
     }
 
+    public static boolean isInbox(EmailFolder folder) {
+        return isInbox(folder.getName());
+    }
+
+    public static boolean isInbox(String folderName) {
+        return "Inbox".equalsIgnoreCase(folderName);
+    }
+
     public static boolean isOutbox(EmailFolder folder) {
         return isOutbox(folder.getName());
     }

app/src/main/res/values/strings.xml

@@ -9,6 +9,9 @@
     <string name="action_settings">Settings</string>
 
     <string name="start_i2p_android">It appears that I2P Android is not running. Would you like to start it?</string>
+    <string name="pull_text">Pull to check email</string>
+    <string name="refreshing_text">Checking email...</string>
+    <string name="release_text">Let go to check email</string>
 
     <string name="items_selected">%s selected</string>
     <string name="action_delete">Delete</string>

app/src/main/res/values/styles.xml

@@ -15,6 +15,20 @@
     <!-- Application theme. -->
     <style name="AppTheme" parent="AppBaseTheme">
         <!-- All customizations that are NOT specific to a particular API-level can go here. -->
+        <item name="ptrHeaderStyle">@style/Widget.Custom.PtrHeader</item>
+    </style>
+
+    <!--
+      ptrHeaderStyle above refers to this style which contains all of the
+      DefaultHeaderTransformer customization values. The name and parent
+      can be anything, but only the attributes defined in
+      library/res/attrs.xml are actually read in.
+    -->
+    <style name="Widget.Custom.PtrHeader" parent="android:Widget">
+        <!-- The strings to be displayed at the various states -->
+        <item name="ptrPullText">@string/pull_text</item>
+        <item name="ptrRefreshingText">@string/refreshing_text</item>
+        <item name="ptrReleaseText">@string/release_text</item>
     </style>
 
 </resources>