implement offline feedlist

4 files changed, 361 insertions, 49 deletions

diff --git a/res/layout/feeds_fragment.xml b/res/layout/feeds_fragment.xml
index 32f2d229..b5651dd6 100644
--- a/res/layout/feeds_fragment.xml
+++ b/res/layout/feeds_fragment.xml
@@ -7,5 +7,10 @@
         <TextView android:layout_width="wrap_content" android:textAppearance="?android:attr/textAppearanceLarge" android:id="@+id/loading_message" android:layout_height="wrap_content" ></TextView>
     </LinearLayout>
     <ListView android:id="@+id/feeds" android:layout_height="match_parent" android:layout_width="match_parent"></ListView>

+
+     <TextView android:id="@+id/no_unread_feeds"
+     	android:visibility="invisible"    	
+    	android:layout_gravity="center" android:color="#909090" 
+    	android:textAppearance="?android:attr/textAppearanceLarge" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/no_unread_feeds"></TextView>
         
     </FrameLayout>

diff --git a/res/menu/main_menu.xml b/res/menu/main_menu.xml
index 531c6b98..04835d49 100644
--- a/res/menu/main_menu.xml
+++ b/res/menu/main_menu.xml
@@ -1,20 +1,20 @@
 <menu xmlns:android="http://schemas.android.com/apk/res/android" >
 
     <item
-        android:id="@+id/go_offline"
-        android:icon="@drawable/ic_menu_cloud"
-        android:showAsAction="ifRoom|withText"
-        android:title="@string/go_offline"/>
-
-    <item
         android:id="@+id/go_online"
-        android:visible="false"
         android:icon="@drawable/ic_menu_cloud"
         android:showAsAction="ifRoom|withText"
-        android:title="@string/go_online"/>
+        android:title="@string/go_online"
+        android:visible="false"/>
 
     <group android:id="@+id/menu_group_logged_in" >
 
+        <item
+            android:id="@+id/go_offline"
+            android:icon="@drawable/ic_menu_cloud"
+            android:showAsAction="ifRoom|withText"
+            android:title="@string/go_offline"/>
+
         <group android:id="@+id/menu_group_feeds" >
 
             <item
diff --git a/src/org/fox/ttrss/MainActivity.java b/src/org/fox/ttrss/MainActivity.java
index 0034d842..32040b69 100644
--- a/src/org/fox/ttrss/MainActivity.java
+++ b/src/org/fox/ttrss/MainActivity.java
@@ -61,6 +61,8 @@ public class MainActivity extends FragmentActivity implements FeedsFragment.OnFe
 	private int m_articleOffset = 0;
 	private boolean m_isOffline = false;
 	
+	private int m_activeOfflineFeedId = 0;
+	
 	private SQLiteDatabase m_readableDb;
 	private SQLiteDatabase m_writableDb;
 	
@@ -320,6 +322,7 @@ public class MainActivity extends FragmentActivity implements FeedsFragment.OnFe
 			m_apiLevel = savedInstanceState.getInt("apiLevel");
 			m_isLicensed = savedInstanceState.getInt("isLicensed");
 			m_isOffline = savedInstanceState.getBoolean("isOffline");
+			m_activeOfflineFeedId = savedInstanceState.getInt("offlineActiveFeedId");
 		}
 		
 		m_enableCats = m_prefs.getBoolean("enable_cats", false);
@@ -334,6 +337,10 @@ public class MainActivity extends FragmentActivity implements FeedsFragment.OnFe
 		m_smallScreenMode = width < 960 || height < 720; 
 		
 		setContentView(R.layout.main);
+
+		initDatabase();
+		
+		m_isOffline = true;
 		
 		Log.d(TAG, "m_isOffline=" + m_isOffline);
 		Log.d(TAG, "m_smallScreenMode=" + m_smallScreenMode);
@@ -353,51 +360,57 @@ public class MainActivity extends FragmentActivity implements FeedsFragment.OnFe
 			}
 		}
 		
-		if (m_smallScreenMode) {
-			if (m_selectedArticle != null) {
-				findViewById(R.id.feeds_fragment).setVisibility(View.GONE);
-				findViewById(R.id.cats_fragment).setVisibility(View.GONE);
-				findViewById(R.id.headlines_fragment).setVisibility(View.GONE);
-			} else if (m_activeFeed != null) {
-				findViewById(R.id.feeds_fragment).setVisibility(View.GONE);
-				findViewById(R.id.article_fragment).setVisibility(View.GONE);
-				findViewById(R.id.cats_fragment).setVisibility(View.GONE);
+		if (m_isOffline) {
+			findViewById(R.id.cats_fragment).setVisibility(View.GONE);
+			findViewById(R.id.headlines_fragment).setVisibility(View.GONE);
+			findViewById(R.id.article_fragment).setVisibility(View.GONE);
+		} else {
+			
+			if (m_smallScreenMode) {
+				if (m_selectedArticle != null) {
+					findViewById(R.id.feeds_fragment).setVisibility(View.GONE);
+					findViewById(R.id.cats_fragment).setVisibility(View.GONE);
+					findViewById(R.id.headlines_fragment).setVisibility(View.GONE);
+				} else if (m_activeFeed != null) {
+					findViewById(R.id.feeds_fragment).setVisibility(View.GONE);
+					findViewById(R.id.article_fragment).setVisibility(View.GONE);
+					findViewById(R.id.cats_fragment).setVisibility(View.GONE);
+				} else {
+					findViewById(R.id.headlines_fragment).setVisibility(View.GONE);
+					//findViewById(R.id.article_fragment).setVisibility(View.GONE);
+					
+					if (m_enableCats && m_activeCategory == null) {
+						findViewById(R.id.feeds_fragment).setVisibility(View.GONE);
+						findViewById(R.id.cats_fragment).setVisibility(View.VISIBLE);
+					} else {
+						findViewById(R.id.cats_fragment).setVisibility(View.GONE);
+					}
+				}
 			} else {
-				findViewById(R.id.headlines_fragment).setVisibility(View.GONE);
-				//findViewById(R.id.article_fragment).setVisibility(View.GONE);
+				if (m_selectedArticle == null) {
+					findViewById(R.id.article_fragment).setVisibility(View.GONE);
+					
+					if (!m_enableCats || m_activeCategory != null)
+						findViewById(R.id.cats_fragment).setVisibility(View.GONE);
+					else
+						findViewById(R.id.feeds_fragment).setVisibility(View.GONE);
 				
-				if (m_enableCats && m_activeCategory == null) {
-					findViewById(R.id.feeds_fragment).setVisibility(View.GONE);
-					findViewById(R.id.cats_fragment).setVisibility(View.VISIBLE);
 				} else {
+					findViewById(R.id.feeds_fragment).setVisibility(View.GONE);
 					findViewById(R.id.cats_fragment).setVisibility(View.GONE);
 				}
 			}
+		}
+		
+		if (m_isOffline) {
+			switchOffline();
 		} else {
-			if (m_selectedArticle == null) {
-				findViewById(R.id.article_fragment).setVisibility(View.GONE);
-				
-				if (!m_enableCats || m_activeCategory != null)
-					findViewById(R.id.cats_fragment).setVisibility(View.GONE);
-				else
-					findViewById(R.id.feeds_fragment).setVisibility(View.GONE);
-			
+			if (m_sessionId != null) {
+				loginSuccess();
 			} else {
-				findViewById(R.id.feeds_fragment).setVisibility(View.GONE);
-				findViewById(R.id.cats_fragment).setVisibility(View.GONE);
+				login();
 			}
-			
-			
 		}
-
-		initDatabase();
-
-		if (m_sessionId != null) {
-			loginSuccess();
-		} else {
-			login();
-		}
-		
 	
 	}
 
@@ -407,6 +420,10 @@ public class MainActivity extends FragmentActivity implements FeedsFragment.OnFe
 		m_readableDb = dh.getReadableDatabase();
 	}
 	
+	public synchronized SQLiteDatabase getReadableDb() {
+		return m_readableDb;
+	}
+	
 	public synchronized SQLiteDatabase getWritableDb() {
 		return m_writableDb;
 	}
@@ -501,7 +518,30 @@ public class MainActivity extends FragmentActivity implements FeedsFragment.OnFe
 			};
 			
 			req.execute(map);
-		}		
+		} else {
+			switchOfflineSuccess();
+		}
+	}
+	
+	public void switchOfflineSuccess() {
+		logout();
+		//setLoadingStatus(R.string.blank, false);
+
+		m_isOffline = true;
+		initMainMenu();
+
+		findViewById(R.id.loading_container).setVisibility(View.INVISIBLE);
+		findViewById(R.id.main).setVisibility(View.VISIBLE);
+
+		if (m_activeOfflineFeedId == 0) {
+			FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
+			OfflineFeedsFragment frag = new OfflineFeedsFragment(); 
+			ft.replace(R.id.feeds_fragment, frag);
+			ft.commit();
+		} else {
+			offlineViewFeed(m_activeOfflineFeedId);
+		}
+		
 	}
 	
 	public void setLoadingStatus(int status, boolean showProgress) {
@@ -531,6 +571,7 @@ public class MainActivity extends FragmentActivity implements FeedsFragment.OnFe
 		out.putInt("apiLevel", m_apiLevel);
 		out.putInt("isLicensed", m_isLicensed);
 		out.putBoolean("isOffline", m_isOffline);
+		out.putInt("offlineActiveFeedId", m_activeOfflineFeedId);
 	}
 
 	@Override
@@ -969,7 +1010,13 @@ public class MainActivity extends FragmentActivity implements FeedsFragment.OnFe
 				m_menu.setGroupVisible(R.id.menu_group_headlines, false);
 				m_menu.setGroupVisible(R.id.menu_group_article, false);
 				m_menu.setGroupVisible(R.id.menu_group_headlines_selection, false);
-				m_menu.setGroupVisible(R.id.menu_group_logged_out, true);
+
+				if (m_isOffline) {
+					m_menu.setGroupVisible(R.id.menu_group_logged_out, false);
+					
+				} else {
+					m_menu.setGroupVisible(R.id.menu_group_logged_out, true);
+				}
 			}
 		}		
 	}
@@ -990,6 +1037,15 @@ public class MainActivity extends FragmentActivity implements FeedsFragment.OnFe
 
 	}
 	
+	@Override
+	public void onDestroy() {
+		super.onDestroy();
+	
+		m_readableDb.close();
+		m_writableDb.close();
+		
+	}
+	
 	private void loginSuccess() {
 		findViewById(R.id.loading_container).setVisibility(View.INVISIBLE);
 		findViewById(R.id.main).setVisibility(View.VISIBLE);
@@ -1546,10 +1602,7 @@ public class MainActivity extends FragmentActivity implements FeedsFragment.OnFe
 					if (articles.size() == 30 && m_articleOffset < 500) {
 						offlineGetArticles();
 					} else {
-						logout();
-						setLoadingStatus(R.string.blank, false);
-						m_isOffline = true;
-						initMainMenu();
+						switchOfflineSuccess();
 					}
 					
 					return;
@@ -1566,4 +1619,8 @@ public class MainActivity extends FragmentActivity implements FeedsFragment.OnFe
 			}
 		}
 	}
+
+	public void offlineViewFeed(int feedId) {
+		m_activeOfflineFeedId = feedId;
+	}
 }
\ No newline at end of file
diff --git a/src/org/fox/ttrss/OfflineFeedsFragment.java b/src/org/fox/ttrss/OfflineFeedsFragment.java
new file mode 100644
index 00000000..992adab1
--- /dev/null
+++ b/src/org/fox/ttrss/OfflineFeedsFragment.java
@@ -0,0 +1,250 @@
+package org.fox.ttrss;

+

+import java.io.File;

+

+import android.app.Activity;

+import android.content.Context;

+import android.content.SharedPreferences;

+import android.content.SharedPreferences.OnSharedPreferenceChangeListener;

+import android.database.Cursor;

+import android.graphics.Bitmap;

+import android.graphics.BitmapFactory;

+import android.os.Bundle;

+import android.os.Environment;

+import android.preference.PreferenceManager;

+import android.provider.BaseColumns;

+import android.support.v4.app.Fragment;

+import android.support.v4.widget.SimpleCursorAdapter;

+import android.util.Log;

+import android.view.ContextMenu;

+import android.view.ContextMenu.ContextMenuInfo;

+import android.view.LayoutInflater;

+import android.view.View;

+import android.view.ViewGroup;

+import android.widget.AdapterView;

+import android.widget.AdapterView.AdapterContextMenuInfo;

+import android.widget.AdapterView.OnItemClickListener;

+import android.widget.BaseAdapter;

+import android.widget.ImageView;

+import android.widget.ListView;

+import android.widget.TextView;

+

+public class OfflineFeedsFragment extends Fragment implements OnItemClickListener, OnSharedPreferenceChangeListener {

+	private final String TAG = this.getClass().getSimpleName();

+	private SharedPreferences m_prefs;

+	private FeedListAdapter m_adapter;

+	private static final String ICON_PATH = "/org.fox.ttrss/icons/";

+	private int m_selectedFeedId;

+	private boolean m_enableFeedIcons;

+	private Cursor m_cursor;

+	

+	@Override

+	public void onCreateContextMenu(ContextMenu menu, View v,

+	    ContextMenuInfo menuInfo) {

+		

+		getActivity().getMenuInflater().inflate(R.menu.feed_menu, menu);

+		

+        AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;

+		Cursor cursor = (Cursor)m_adapter.getItem(info.position);

+		

+		if (cursor != null) 

+			menu.setHeaderTitle(cursor.getString(cursor.getColumnIndex("title")));

+

+		super.onCreateContextMenu(menu, v, menuInfo);		

+		

+	}

+	

+	@Override

+	public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {    	

+		

+		if (savedInstanceState != null) {

+			m_selectedFeedId = savedInstanceState.getInt("selectedFeedId");

+		}

+

+		View view = inflater.inflate(R.layout.feeds_fragment, container, false);

+		

+		ListView list = (ListView)view.findViewById(R.id.feeds);

+		

+		m_cursor = ((MainActivity)getActivity()).getReadableDb().query("feeds_unread", 

+				null, null, null, null, null, "title");

+		

+		m_adapter = new FeedListAdapter(getActivity(), R.layout.feeds_row, m_cursor,

+				new String[] { "title", "unread" }, new int[] { R.id.title, R.id.unread_counter }, 0);

+

+		list.setAdapter(m_adapter);

+		list.setOnItemClickListener(this);

+		list.setEmptyView(view.findViewById(R.id.no_unread_feeds));

+		registerForContextMenu(list);

+

+		view.findViewById(R.id.loading_container).setVisibility(View.GONE);

+		

+		m_enableFeedIcons = m_prefs.getBoolean("download_feed_icons", false);

+		

+		return view;    	

+	}

+

+	@Override

+	public void onDestroy() {

+		super.onDestroy();

+		

+		m_cursor.close();

+	}

+

+	@Override

+	public void onAttach(Activity activity) {

+		super.onAttach(activity);		

+		

+		m_prefs = PreferenceManager.getDefaultSharedPreferences(getActivity().getApplicationContext());

+		m_prefs.registerOnSharedPreferenceChangeListener(this);

+		

+	}

+

+	@Override

+	public void onSaveInstanceState (Bundle out) {

+		super.onSaveInstanceState(out);

+

+		out.putInt("selectedFeedId", m_selectedFeedId);

+	}

+	

+	@Override

+	public void onItemClick(AdapterView<?> av, View view, int position, long id) {

+		ListView list = (ListView)getActivity().findViewById(R.id.feeds);

+		

+		if (list != null) {

+			Cursor cursor = (Cursor) list.getItemAtPosition(position);

+			

+			if (cursor != null) {

+				int feedId = (int) cursor.getLong(0);

+				Log.d(TAG, "clicked on feed " + feedId);

+				

+				((MainActivity)getActivity()).offlineViewFeed(feedId);

+				

+				m_selectedFeedId = feedId;

+				

+				m_adapter.notifyDataSetChanged();

+			}

+		}

+	}

+

+	public void setLoadingStatus(int status, boolean showProgress) {

+		if (getView() != null) {

+			TextView tv = (TextView)getView().findViewById(R.id.loading_message);

+			

+			if (tv != null) {

+				tv.setText(status);

+			}

+			

+			View pb = getView().findViewById(R.id.loading_progress);

+			

+			if (pb != null) {

+				pb.setVisibility(showProgress ? View.VISIBLE : View.GONE);

+			}

+		}

+	}

+	

+	private class FeedListAdapter extends SimpleCursorAdapter {

+		

+

+		public FeedListAdapter(Context context, int layout, Cursor c,

+				String[] from, int[] to, int flags) {

+			super(context, layout, c, from, to, flags);

+		}

+

+		public static final int VIEW_NORMAL = 0;

+		public static final int VIEW_SELECTED = 1;

+		

+		public static final int VIEW_COUNT = VIEW_SELECTED+1;

+

+		@Override

+		public int getViewTypeCount() {

+			return VIEW_COUNT;

+		}

+

+		@Override

+		public int getItemViewType(int position) {

+			Cursor cursor = (Cursor) this.getItem(position);

+			

+			if (cursor.getLong(0) == m_selectedFeedId) {

+				return VIEW_SELECTED;

+			} else {

+				return VIEW_NORMAL;				

+			}			

+		}

+

+		@Override

+		public View getView(int position, View convertView, ViewGroup parent) {

+			View v = convertView;

+

+			Cursor cursor = (Cursor)getItem(position);

+

+			if (v == null) {

+				int layoutId = R.layout.feeds_row;

+				

+				switch (getItemViewType(position)) {

+				case VIEW_SELECTED:

+					layoutId = R.layout.feeds_row_selected;

+					break;

+				}

+				

+				LayoutInflater vi = (LayoutInflater)getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);

+				v = vi.inflate(layoutId, null);

+

+			}

+

+			TextView tt = (TextView) v.findViewById(R.id.title);

+

+			if (tt != null) {

+				tt.setText(cursor.getString(cursor.getColumnIndex("title")));

+			}

+

+			TextView tu = (TextView) v.findViewById(R.id.unread_counter);

+

+			if (tu != null) {

+				tu.setText(String.valueOf(cursor.getInt(cursor.getColumnIndex("unread"))));

+				tu.setVisibility((cursor.getInt(cursor.getColumnIndex("unread")) > 0) ? View.VISIBLE : View.INVISIBLE);

+			}

+			

+			ImageView icon = (ImageView)v.findViewById(R.id.icon);

+			

+			if (icon != null) {

+				

+				if (m_enableFeedIcons) {

+					

+					File storage = Environment.getExternalStorageDirectory();

+					

+					File iconFile = new File(storage.getAbsolutePath() + ICON_PATH + cursor.getInt(cursor.getColumnIndex(BaseColumns._ID)) + ".ico");

+					if (iconFile.exists()) {

+						Bitmap bmpOrig = BitmapFactory.decodeFile(iconFile.getAbsolutePath());		

+						if (bmpOrig != null) {

+							icon.setImageBitmap(bmpOrig);

+						}

+					} else {

+						icon.setImageResource(cursor.getInt(cursor.getColumnIndex("unread")) > 0 ? R.drawable.ic_rss : R.drawable.ic_rss_bw);

+					}

+					

+				} else {

+					icon.setImageResource(cursor.getInt(cursor.getColumnIndex("unread")) > 0 ? R.drawable.ic_rss : R.drawable.ic_rss_bw);

+				}

+				

+			}

+

+			return v;

+		} 

+	}

+

+	public void sortFeeds() {

+		// TODO implement

+		

+		m_adapter.notifyDataSetInvalidated();

+	}

+	

+	@Override

+	public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,

+			String key) {

+

+		sortFeeds();

+		m_enableFeedIcons = m_prefs.getBoolean("download_feed_icons", false);

+		

+	}

+

+}