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diff --git a/src/com/viewpagerindicator/TabPageIndicator.java b/src/com/viewpagerindicator/TabPageIndicator.java
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+++ b/src/com/viewpagerindicator/TabPageIndicator.java
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+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ * Copyright (C) 2011 Jake Wharton
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.viewpagerindicator;
+
+import android.content.Context;
+import android.support.v4.view.PagerAdapter;
+import android.support.v4.view.ViewPager;
+import android.support.v4.view.ViewPager.OnPageChangeListener;
+import android.util.AttributeSet;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.HorizontalScrollView;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
+import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
+
+/**
+ * This widget implements the dynamic action bar tab behavior that can change
+ * across different configurations or circumstances.
+ */
+public class TabPageIndicator extends HorizontalScrollView implements PageIndicator {
+    /** Title text used when no title is provided by the adapter. */
+    private static final CharSequence EMPTY_TITLE = "";
+
+    /**
+     * Interface for a callback when the selected tab has been reselected.
+     */
+    public interface OnTabReselectedListener {
+        /**
+         * Callback when the selected tab has been reselected.
+         *
+         * @param position Position of the current center item.
+         */
+        void onTabReselected(int position);
+    }
+
+    private Runnable mTabSelector;
+
+    private final OnClickListener mTabClickListener = new OnClickListener() {
+        public void onClick(View view) {
+            TabView tabView = (TabView)view;
+            final int oldSelected = mViewPager.getCurrentItem();
+            final int newSelected = tabView.getIndex();
+            mViewPager.setCurrentItem(newSelected);
+            if (oldSelected == newSelected && mTabReselectedListener != null) {
+                mTabReselectedListener.onTabReselected(newSelected);
+            }
+        }
+    };
+
+    private final IcsLinearLayout mTabLayout;
+
+    private ViewPager mViewPager;
+    private ViewPager.OnPageChangeListener mListener;
+
+    private int mMaxTabWidth;
+    private int mSelectedTabIndex;
+
+    private OnTabReselectedListener mTabReselectedListener;
+
+    public TabPageIndicator(Context context) {
+        this(context, null);
+    }
+
+    public TabPageIndicator(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        setHorizontalScrollBarEnabled(false);
+
+        mTabLayout = new IcsLinearLayout(context, R.attr.vpiTabPageIndicatorStyle);
+        addView(mTabLayout, new ViewGroup.LayoutParams(WRAP_CONTENT, MATCH_PARENT));
+    }
+
+    public void setOnTabReselectedListener(OnTabReselectedListener listener) {
+        mTabReselectedListener = listener;
+    }
+
+    @Override
+    public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        final int widthMode = MeasureSpec.getMode(widthMeasureSpec);
+        final boolean lockedExpanded = widthMode == MeasureSpec.EXACTLY;
+        setFillViewport(lockedExpanded);
+
+        final int childCount = mTabLayout.getChildCount();
+        if (childCount > 1 && (widthMode == MeasureSpec.EXACTLY || widthMode == MeasureSpec.AT_MOST)) {
+            if (childCount > 2) {
+                mMaxTabWidth = (int)(MeasureSpec.getSize(widthMeasureSpec) * 0.4f);
+            } else {
+                mMaxTabWidth = MeasureSpec.getSize(widthMeasureSpec) / 2;
+            }
+        } else {
+            mMaxTabWidth = -1;
+        }
+
+        final int oldWidth = getMeasuredWidth();
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+        final int newWidth = getMeasuredWidth();
+
+        if (lockedExpanded && oldWidth != newWidth) {
+            // Recenter the tab display if we're at a new (scrollable) size.
+            setCurrentItem(mSelectedTabIndex);
+        }
+    }
+
+    private void animateToTab(final int position) {
+        final View tabView = mTabLayout.getChildAt(position);
+        if (mTabSelector != null) {
+            removeCallbacks(mTabSelector);
+        }
+        mTabSelector = new Runnable() {
+            public void run() {
+                final int scrollPos = tabView.getLeft() - (getWidth() - tabView.getWidth()) / 2;
+                smoothScrollTo(scrollPos, 0);
+                mTabSelector = null;
+            }
+        };
+        post(mTabSelector);
+    }
+
+    @Override
+    public void onAttachedToWindow() {
+        super.onAttachedToWindow();
+        if (mTabSelector != null) {
+            // Re-post the selector we saved
+            post(mTabSelector);
+        }
+    }
+
+    @Override
+    public void onDetachedFromWindow() {
+        super.onDetachedFromWindow();
+        if (mTabSelector != null) {
+            removeCallbacks(mTabSelector);
+        }
+    }
+
+    private void addTab(int index, CharSequence text, int iconResId) {
+        final TabView tabView = new TabView(getContext());
+        tabView.mIndex = index;
+        tabView.setFocusable(true);
+        tabView.setOnClickListener(mTabClickListener);
+        tabView.setText(text);
+
+        if (iconResId != 0) {
+            tabView.setCompoundDrawablesWithIntrinsicBounds(iconResId, 0, 0, 0);
+        }
+
+        mTabLayout.addView(tabView, new LinearLayout.LayoutParams(0, MATCH_PARENT, 1));
+    }
+
+    @Override
+    public void onPageScrollStateChanged(int arg0) {
+        if (mListener != null) {
+            mListener.onPageScrollStateChanged(arg0);
+        }
+    }
+
+    @Override
+    public void onPageScrolled(int arg0, float arg1, int arg2) {
+        if (mListener != null) {
+            mListener.onPageScrolled(arg0, arg1, arg2);
+        }
+    }
+
+    @Override
+    public void onPageSelected(int arg0) {
+        setCurrentItem(arg0);
+        if (mListener != null) {
+            mListener.onPageSelected(arg0);
+        }
+    }
+
+    @Override
+    public void setViewPager(ViewPager view) {
+        if (mViewPager == view) {
+            return;
+        }
+        if (mViewPager != null) {
+            mViewPager.setOnPageChangeListener(null);
+        }
+        final PagerAdapter adapter = view.getAdapter();
+        if (adapter == null) {
+            throw new IllegalStateException("ViewPager does not have adapter instance.");
+        }
+        mViewPager = view;
+        view.setOnPageChangeListener(this);
+        notifyDataSetChanged();
+    }
+
+    public void notifyDataSetChanged() {
+        mTabLayout.removeAllViews();
+        PagerAdapter adapter = mViewPager.getAdapter();
+        IconPagerAdapter iconAdapter = null;
+        if (adapter instanceof IconPagerAdapter) {
+            iconAdapter = (IconPagerAdapter)adapter;
+        }
+        final int count = adapter.getCount();
+        for (int i = 0; i < count; i++) {
+            CharSequence title = adapter.getPageTitle(i);
+            if (title == null) {
+                title = EMPTY_TITLE;
+            }
+            int iconResId = 0;
+            if (iconAdapter != null) {
+                iconResId = iconAdapter.getIconResId(i);
+            }
+            addTab(i, title, iconResId);
+        }
+        if (mSelectedTabIndex > count) {
+            mSelectedTabIndex = count - 1;
+        }
+        setCurrentItem(mSelectedTabIndex);
+        requestLayout();
+    }
+
+    @Override
+    public void setViewPager(ViewPager view, int initialPosition) {
+        setViewPager(view);
+        setCurrentItem(initialPosition);
+    }
+
+    @Override
+    public void setCurrentItem(int item) {
+        if (mViewPager == null) {
+            throw new IllegalStateException("ViewPager has not been bound.");
+        }
+        mSelectedTabIndex = item;
+        mViewPager.setCurrentItem(item);
+
+        final int tabCount = mTabLayout.getChildCount();
+        for (int i = 0; i < tabCount; i++) {
+            final View child = mTabLayout.getChildAt(i);
+            final boolean isSelected = (i == item);
+            child.setSelected(isSelected);
+            if (isSelected) {
+                animateToTab(item);
+            }
+        }
+    }
+
+    @Override
+    public void setOnPageChangeListener(OnPageChangeListener listener) {
+        mListener = listener;
+    }
+
+    private class TabView extends TextView {
+        private int mIndex;
+
+        public TabView(Context context) {
+            super(context, null, R.attr.vpiTabPageIndicatorStyle);
+        }
+
+        @Override
+        public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+
+            // Re-measure if we went beyond our maximum size.
+            if (mMaxTabWidth > 0 && getMeasuredWidth() > mMaxTabWidth) {
+                super.onMeasure(MeasureSpec.makeMeasureSpec(mMaxTabWidth, MeasureSpec.EXACTLY),
+                        heightMeasureSpec);
+            }
+        }
+
+        public int getIndex() {
+            return mIndex;
+        }
+    }
+}