This patch makes brief gReader-like.

brief.patch

diff -Naur old/content/brief-overlay.xul new/content/brief-overlay.xul
--- old/content/brief-overlay.xul	2010-12-19 04:37:16.000000000 +0900
+++ new/content/brief-overlay.xul	2011-02-23 22:38:31.000000000 +0900
@@ -12,21 +12,21 @@
         <key id="Brief_open" key="d" modifiers="accel alt"
              oncommand="Brief.open()"/>
 
-        <key id="Brief_selectNextEntry" key="j"
-             oncommand="Brief.doCommand('selectNextEntry')"/>
-        <key id="Brief_selectPreviousEntry" key="k"
-             oncommand="Brief.doCommand('selectPrevEntry')"/>
+        <key id="Brief_scrollDown" key="j"
+             oncommand="Brief.doCommand('scrollDownByLine')"/>
+        <key id="Brief_scrollUp" key="k"
+             oncommand="Brief.doCommand('scrollUpByLine')"/>
         <key id="Brief_skipDown" key="u"
              oncommand="Brief.doCommand('skipDown')"/>
         <key id="Brief_skipUp" key="i"
              oncommand="Brief.doCommand('skipUp')"/>
-
+        <key id="Brief_selectNextFeed" key="n"
+             oncommand="Brief.doCommand('selectNextFeed')"/>
+        <key id="Brief_selectPrevFeed" key="p"
+             oncommand="Brief.doCommand('selectPrevFeed')"/>
+        
         <key id="Brief_toggleSelectedEntryRead" key="m"
              oncommand="Brief.doCommand('toggleSelectedEntryRead')"/>
-        <key id="Brief_markVisibleEntriesRead" key="n"
-             oncommand="Brief.doCommand('markVisibleEntriesRead')"/>
-        <key id="Brief_markCurrentViewRead" key="n" modifiers="alt"
-             oncommand="Brief.doCommand('markViewRead')"/>
         <key id="Brief_deleteOrRestoreSelectedEntry" key="t"
              oncommand="Brief.doCommand('deleteOrRestoreSelectedEntry')"/>
         <key id="Brief_toggleSelectedEntryStarred" key="b"
diff -Naur old/content/brief.js new/content/brief.js
--- old/content/brief.js	2011-01-19 17:39:48.000000000 +0900
+++ new/content/brief.js	2011-02-23 23:06:24.041695001 +0900
@@ -89,6 +89,31 @@
 
 var Commands = {
 
+    scrollUpByLine: function cmd_scrollUpByLine(){
+        gCurrentView.scrollUpByLine();
+    },
+    scrollDownByLine: function cmd_scrollDownByLine(){
+        gCurrentView.scrollDownByLine();
+    },
+
+    selectNextFeed: function cmd_selectNextFeed() {
+        var newEvent = document.createEvent('KeyboardEvent');
+        newEvent.initKeyEvent('keypress',
+                              true, true, null,
+                              false, false, false, false,
+                              KeyEvent.DOM_VK_DOWN, 0);
+        FeedList.tree.dispatchEvent(newEvent);
+    },
+
+    selectPrevFeed: function cmd_selectPrevFeed() {
+        var newEvent = document.createEvent('KeyboardEvent');
+        newEvent.initKeyEvent('keypress',
+                              true, true, null,
+                              false, false, false, false,
+                              KeyEvent.DOM_VK_UP, 0);
+        FeedList.tree.dispatchEvent(newEvent);
+    },    
+
     hideSidebar: function cmd_hideSidebar() {
         getElement('sidebar').hidden = true;
         getElement('sidebar-splitter').hidden = true;
@@ -414,6 +439,7 @@
         filterUnread:              'feedview.filterUnread',
         filterStarred:             'feedview.filterStarred',
         sortUnreadViewOldestFirst: 'feedview.sortUnreadViewOldestFirst',
+        hideReadFeed:              'feedlist.hideReadFeeds',
         showFavicons:              'showFavicons',
         homeFolder:                'homeFolder'
     },
@@ -463,6 +489,10 @@
             case 'feedview.showHeadlinesOnly':
                 gCurrentView.toggleHeadlinesView();
                 break;
+
+            case 'feedlist.hideReadFeeds':
+                FeedList.rebuild();
+                break;
         }
     }
 
diff -Naur old/content/feedlist.js new/content/feedlist.js
--- old/content/feedlist.js	2011-01-19 17:39:48.000000000 +0900
+++ new/content/feedlist.js	2011-02-23 23:01:52.785695001 +0900
@@ -448,6 +448,8 @@
         else {
             label = aFeed.title;
             this.removeProperty(treecell, 'unread');
+            if (PrefCache.hideReadFeed)
+                treecell.parentNode.parentNode.setAttribute('hidden',true);
         }
 
         treecell.setAttribute('label', label);
diff -Naur old/content/feedview.js new/content/feedview.js
--- old/content/feedview.js	2011-02-10 22:43:52.000000000 +0900
+++ new/content/feedview.js	2011-02-23 23:11:44.789695000 +0900
@@ -212,6 +212,9 @@
 
         if (entry) {
             this.selectedElement.setAttribute('selected', true);
+            if (PrefCache.autoMarkRead){
+                Commands.markEntryRead(entry, true);
+            }
 
             if (aScroll)
                 this.scrollToEntry(entry, true, aScrollSmoothly);
@@ -316,6 +319,15 @@
         }
     },
 
+    scrollUpByLine: function cmd_scrollUpByLine(){
+        var win = this.window;
+        win.scrollByLines(-4);
+    },
+    scrollDownByLine: function cmd_scrollDownByLine(){
+        var win = this.window;
+        win.scrollByLines(4);
+    },
+
     _scrollSmoothly: function FeedView__scrollSmoothly(aTargetPosition) {
         if (this._scrolling)
             return;
@@ -381,7 +393,8 @@
     },
 
     _autoMarkRead: function FeedView__autoMarkRead() {
-        if (PrefCache.autoMarkRead && !PrefCache.showHeadlinesOnly && this.query.read !== false) {
+        if (PrefCache.autoMarkRead && !PrefCache.showHeadlinesOnly &&
+            this.query.read !== false && !PrefCache.entrySelectionEnabled) {
             clearTimeout(this._markVisibleTimeout);
             this._markVisibleTimeout = async(this.markVisibleEntriesRead, 1000, this);
         }
@@ -644,13 +657,6 @@
         if (!this.active)
             return;
 
-        if (this.query.read === false) {
-            if (aNewState)
-                this._onEntriesRemoved(aEntryList.IDs, true, true);
-            else
-                this._onEntriesAdded(aEntryList.IDs);
-        }
-
         intersect(this._loadedEntries, aEntryList.IDs).forEach(function(entry) {
             let entryElement = this.document.getElementById(entry);
             let markReadButton = entryElement.getElementsByClassName('mark-read')[0];
diff -Naur old/content/options/options.xul new/content/options/options.xul
--- old/content/options/options.xul	2010-12-20 23:28:38.000000000 +0900
+++ new/content/options/options.xul	2011-02-23 22:57:35.377694999 +0900
@@ -56,6 +56,9 @@
             <preference id="extensions.brief.feedview.autoMarkRead"
                         name="extensions.brief.feedview.autoMarkRead"
                         type="bool"/>
+            <preference id="extensions.brief.feedlist.hideReadFeeds"
+                        name="extensions.brief.feedlist.hideReadFeeds"
+                        type="bool"/>
             <preference id="extensions.brief.showStatusbarIcon"
                         name="extensions.brief.showStatusbarIcon"
                         type="bool"/>
@@ -115,6 +118,9 @@
                       label="&enableItemHightlight.label;"
                       accesskey="&enableItemHightlight.accesskey;"
                       preference="extensions.brief.feedview.entrySelectionEnabled"/>
+            <checkbox id="hide-read-feeds"
+                      label="Hide read feeds"
+                      preference="extensions.brief.feedlist.hideReadFeeds"/>
         </groupbox>
 
         <groupbox>