Bug 738049: Using LayoutInflater.Factory improves performance. [r=mfinkle]

mobile/android/base/AwesomeBar.java

@@ -61,6 +61,7 @@ import android.util.Log;
 import android.view.ContextMenu;
 import android.view.ContextMenu.ContextMenuInfo;
 import android.view.KeyEvent;
+import android.view.LayoutInflater;
 import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.View;
@@ -109,6 +110,7 @@ public class AwesomeBar extends Activity implements GeckoEventListener {
         Log.d(LOGTAG, "creating awesomebar");
 
         mResolver = Tabs.getInstance().getContentResolver();
+        LayoutInflater.from(this).setFactory(GeckoViewsFactory.getInstance());
 
         setContentView(R.layout.awesomebar);
 

mobile/android/base/GeckoApp.java

@@ -1623,6 +1623,8 @@ abstract public class GeckoApp
             mRestoreSession = savedInstanceState.getBoolean(SAVED_STATE_SESSION);
         }
 
+        LayoutInflater.from(this).setFactory(GeckoViewsFactory.getInstance());
+
         super.onCreate(savedInstanceState);
 
         mOrientation = getResources().getConfiguration().orientation;

mobile/android/base/GeckoViewsFactory.java

@@ -0,0 +1,59 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.gecko;
+
+import java.util.HashMap;
+
+import android.content.Context;
+import android.text.TextUtils;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+
+public final class GeckoViewsFactory implements LayoutInflater.Factory {
+    private static final String LOGTAG = "GeckoViewsFactory";
+
+    private static final String GECKO_VIEW_IDENTIFIER = "org.mozilla.gecko.";
+    private static final int GECKO_VIEW_IDENTIFIER_LENGTH = GECKO_VIEW_IDENTIFIER.length();
+
+    // List of custom views used
+    private static final int ABOUT_HOME_SECTION = 1;
+    private static final int AWESOME_BAR_TABS = 2;
+    private static final int FORM_ASSIST_POPUP = 3;
+    private static final int LINK_TEXT_VIEW = 4;
+
+    private GeckoViewsFactory() { }
+
+    // Making this a singleton class.
+    private static final GeckoViewsFactory INSTANCE = new GeckoViewsFactory();
+
+    public static GeckoViewsFactory getInstance() {
+        return INSTANCE;
+    }
+
+    @Override
+    public View onCreateView(String name, Context context, AttributeSet attrs) {
+        if (!TextUtils.isEmpty(name) && name.startsWith(GECKO_VIEW_IDENTIFIER)) {
+            String viewName = name.substring(GECKO_VIEW_IDENTIFIER_LENGTH);
+
+            if (TextUtils.isEmpty(viewName))
+                return null;
+        
+            Log.i(LOGTAG, "Creating custom Gecko view: " + viewName);
+
+            if (TextUtils.equals(viewName, "AboutHomeSection"))
+                return new AboutHomeSection(context, attrs);
+            else if (TextUtils.equals(viewName, "AwesomeBarTabs"))
+                return new AwesomeBarTabs(context, attrs);
+            else if (TextUtils.equals(viewName, "FormAssistPopup"))
+                return new FormAssistPopup(context, attrs);
+            else if (TextUtils.equals(viewName, "LinkTextView"))
+                return new LinkTextView(context, attrs);
+        }
+
+        return null;
+    }
+}

mobile/android/base/Makefile.in

@@ -97,6 +97,7 @@ FENNEC_JAVA_FILES = \
   GeckoStateListDrawable.java \
   GeckoThread.java \
   GlobalHistory.java \
+  GeckoViewsFactory.java \
   LinkPreference.java \
   LinkTextView.java \
 	NSSBridge.java \

mobile/android/base/TabsTray.java

@@ -53,6 +53,8 @@ public class TabsTray extends Activity implements Tabs.OnTabsChangedListener {
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
+        LayoutInflater.from(this).setFactory(GeckoViewsFactory.getInstance());
+
         setContentView(R.layout.tabs_tray);
 
         mWaitingForClose = false;