reimplement going between articles with volume keys, bump version

AndroidManifest.xml

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="org.fox.ttrss"
-    android:versionCode="106"
+    android:versionCode="107"
-    android:versionName="0.8.5" >
+    android:versionName="0.8.6" >
 
     <uses-sdk
         android:minSdkVersion="8"

res/values/strings.xml

@@ -135,4 +135,6 @@
     <string name="pref_default_view_mode">Default feed view</string>
     <string name="pref_default_view_mode_long">Which feed view to open by default on smartphones</string>
     <string name="donate_thanks">Donation found, thank you for support!</string>
+    <string name="use_volume_keys">Use volume buttons</string>
+    <string name="use_volume_keys_long">Switch between articles with hardware volume buttons</string>
 </resources>

res/xml/preferences.xml

@@ -2,21 +2,18 @@
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >
 
     <PreferenceCategory android:title="@string/connection" >
-
         <EditTextPreference
             android:key="login"
             android:singleLine="true"
             android:summary="@string/login_summary"
             android:title="@string/login" >
         </EditTextPreference>
-
         <EditTextPreference
             android:key="password"
             android:password="true"
             android:singleLine="true"
             android:title="@string/password" >
         </EditTextPreference>
-
         <EditTextPreference
             android:hint="@string/default_url"
             android:inputType="textUri"
@@ -31,16 +28,13 @@
             android:key="ssl_trust_any"
             android:title="@string/ssl_trust_any" />
     </PreferenceCategory>
-
     <PreferenceCategory android:title="@string/http_authentication" >
-
         <EditTextPreference
             android:key="http_login"
             android:singleLine="true"
             android:summary="@string/http_login_summary"
             android:title="@string/login" >
         </EditTextPreference>
-
         <EditTextPreference
             android:key="http_password"
             android:password="true"
@@ -48,9 +42,9 @@
             android:title="@string/password" >
         </EditTextPreference>
     </PreferenceCategory>
-
+    <PreferenceCategory
-    <PreferenceCategory android:key="category_look_and_feel" android:title="@string/look_and_feel" >
+        android:key="category_look_and_feel"
-
+        android:title="@string/look_and_feel" >
         <ListPreference
             android:defaultValue="THEME_DARK"
             android:entries="@array/pref_theme_names"
@@ -58,7 +52,6 @@
             android:key="theme"
             android:summary="@string/pref_theme_long"
             android:title="@string/pref_theme" />
-
         <ListPreference
             android:defaultValue="0"
             android:entries="@array/pref_font_size_names"
@@ -70,29 +63,28 @@
             android:defaultValue="false"
             android:key="sort_feeds_by_unread"
             android:title="@string/sort_feeds_by_unread" />
-
         <CheckBoxPreference
             android:defaultValue="false"
             android:key="download_feed_icons"
             android:title="@string/download_feed_icons" />
-
         <CheckBoxPreference
             android:defaultValue="false"
             android:key="enable_cats"
             android:title="@string/enable_cats" />
-
         <CheckBoxPreference
             android:defaultValue="false"
-            android:key="browse_cats_like_feeds"
             android:dependency="enable_cats"
+            android:key="browse_cats_like_feeds"
             android:summary="@string/browse_cats_like_feeds_summary"
             android:title="@string/browse_cats_like_feeds" />
 
-        <!--  <CheckBoxPreference
+        <!--
+              <CheckBoxPreference
             android:defaultValue="false"
             android:key="combined_mode"
             android:summary="@string/combined_mode_summary"
-            android:title="@string/combined_mode" /> -->
+            android:title="@string/combined_mode" />
+        -->
 
         <CheckBoxPreference
             android:defaultValue="true"
@@ -107,19 +99,20 @@
             android:summary="@string/pref_default_view_mode_long"
             android:title="@string/pref_default_view_mode" />
 
+        <CheckBoxPreference
+            android:defaultValue="false"
+            android:key="use_volume_keys"
+            android:summary="@string/use_volume_keys_long"
+            android:title="@string/use_volume_keys" />
     </PreferenceCategory>
-
     <PreferenceCategory android:title="@string/offline_mode" >
-
         <CheckBoxPreference
             android:defaultValue="false"
             android:key="offline_image_cache_enabled"
             android:summary="@string/offline_image_cache_enabled_summary"
             android:title="@string/offline_image_cache_enabled" />
     </PreferenceCategory>
-
     <PreferenceCategory android:title="@string/debugging" >
-
         <CheckBoxPreference
             android:defaultValue="false"
             android:key="transport_debugging"

src/org/fox/ttrss/ArticlePager.java

@@ -256,4 +256,26 @@ public class ArticlePager extends Fragment {
 			pager.setCurrentItem(position);
 		}
 	}
+
+	public void selectArticle(boolean next) {
+		if (m_article != null) {
+			int position = m_articles.indexOf(m_article);
+			
+			if (next) 
+				position++;
+			else
+				position--;
+			
+			try {
+				Article tmp = m_articles.get(position);
+				
+				if (tmp != null) {
+					setActiveArticle(tmp);
+				}
+				
+			} catch (IndexOutOfBoundsException e) {
+				// do nothing
+			}
+		}		
+	}
 }

src/org/fox/ttrss/OnlineActivity.java

@@ -31,6 +31,7 @@ import android.os.Bundle;
 import android.preference.PreferenceManager;
 import android.util.Log;
 import android.view.ActionMode;
+import android.view.KeyEvent;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
@@ -1031,6 +1032,26 @@ public class OnlineActivity extends CommonActivity {
 		return intent;
 	}
 	
+	@Override
+	public boolean onKeyDown(int keyCode, KeyEvent event) {		
+		if (m_prefs.getBoolean("use_volume_keys", false)) {
+			ArticlePager ap = (ArticlePager) getSupportFragmentManager().findFragmentByTag(FRAG_ARTICLE);
+			
+			if (ap != null && ap.isAdded()) {			
+				switch (keyCode) {
+				case KeyEvent.KEYCODE_VOLUME_UP:
+					ap.selectArticle(false);					
+					return true;
+				case KeyEvent.KEYCODE_VOLUME_DOWN:
+					ap.selectArticle(true);
+					return true;
+				}
+			}
+		}
+		
+		return super.onKeyDown(keyCode, event);			
+	}
+		
 	@SuppressWarnings("unchecked")
 	public void catchupFeed(final Feed feed) {
 		Log.d(TAG, "catchupFeed=" + feed);

src/org/fox/ttrss/offline/OfflineActivity.java

@@ -19,6 +19,7 @@ import android.preference.PreferenceManager;
 import android.provider.BaseColumns;
 import android.util.Log;
 import android.view.ActionMode;
+import android.view.KeyEvent;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
@@ -495,6 +496,26 @@ public class OfflineActivity extends CommonActivity {
 		return c;
 	}
 
+	@Override
+	public boolean onKeyDown(int keyCode, KeyEvent event) {		
+		if (m_prefs.getBoolean("use_volume_keys", false)) {
+			OfflineArticlePager ap = (OfflineArticlePager) getSupportFragmentManager().findFragmentByTag(FRAG_ARTICLE);
+			
+			if (ap != null && ap.isAdded()) {			
+				switch (keyCode) {
+				case KeyEvent.KEYCODE_VOLUME_UP:
+					ap.selectArticle(false);					
+					return true;
+				case KeyEvent.KEYCODE_VOLUME_DOWN:
+					ap.selectArticle(true);
+					return true;
+				}
+			}
+		}
+		
+		return super.onKeyDown(keyCode, event);			
+	}
+	
 	protected Cursor getFeedById(int feedId) {
 		Cursor c = getReadableDb().query("feeds", null,
 				BaseColumns._ID + "=?",

src/org/fox/ttrss/offline/OfflineArticlePager.java

@@ -1,6 +1,7 @@
 package org.fox.ttrss.offline;
 
 import org.fox.ttrss.R;
+import org.fox.ttrss.types.Article;
 
 import android.app.Activity;
 import android.database.Cursor;
@@ -206,21 +207,41 @@ public class OfflineArticlePager extends Fragment {
 	public void setArticleId(int articleId) {
 		m_articleId = articleId;		
 		
-		m_cursor.moveToFirst();
+		int position = getArticleIdPosition(articleId);
-		
-		int position = 0;
-		
-		while (!m_cursor.isLast()) {
-			if (m_cursor.getInt(m_cursor.getColumnIndex(BaseColumns._ID)) == m_articleId) {
-				position = m_cursor.getPosition();
-				break;
-			}				
-			m_cursor.moveToNext();
-		}
 		
 		ViewPager pager = (ViewPager) getView().findViewById(R.id.article_pager);
 		
 		pager.setCurrentItem(position);
 		
 	}
+	
+	public int getArticleIdPosition(int articleId) {
+		m_cursor.moveToFirst();
+		
+		while (!m_cursor.isLast()) {
+			if (m_cursor.getInt(m_cursor.getColumnIndex(BaseColumns._ID)) == articleId) {
+				return m_cursor.getPosition();
+			}				
+			m_cursor.moveToNext();
+		}
+		
+		return -1;
+	}
+
+	public void selectArticle(boolean next) {
+		int position = getArticleIdPosition(m_articleId);
+		
+		if (position != -1) {
+			if (next) 
+				position++;
+			else
+				position--;
+	
+			Log.d(TAG, "pos=" + position);
+			
+			if (m_cursor.moveToPosition(position)) {
+				setArticleId(m_cursor.getInt(m_cursor.getColumnIndex(BaseColumns._ID)));			
+			}
+		}
+	}
 }

src/org/fox/ttrss/offline/OfflineHeadlinesFragment.java

@@ -661,7 +661,7 @@ public class OfflineHeadlinesFragment extends Fragment implements OnItemClickLis
 				return i;
 		}
 		
-		return 0;
+		return -1;
 	}
 	
 	public int getArticleCount() {