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      1 /*
      2  * Copyright 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *     http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.example.android.tabcompat.lib;
     18 
     19 import android.app.ActionBar;
     20 import android.app.ActionBar.Tab;
     21 import android.graphics.drawable.Drawable;
     22 import android.support.v4.app.Fragment;
     23 import android.support.v4.app.FragmentActivity;
     24 import android.support.v4.app.FragmentTransaction;
     25 
     26 /**
     27  * An implementation of the {@link CompatTab} interface that relies on API 11 APIs.
     28  */
     29 public class CompatTabHoneycomb extends CompatTab implements ActionBar.TabListener {
     30 
     31     /**
     32      * The native tab object that this {@link CompatTab} acts as a proxy for.
     33      */
     34     ActionBar.Tab mTab;
     35     CompatTabListener mCallback;
     36     Fragment mFragment;
     37 
     38     protected CompatTabHoneycomb(FragmentActivity activity, String tag) {
     39         super(activity, tag);
     40         mTab = activity.getActionBar().newTab();
     41     }
     42 
     43     @Override
     44     public CompatTab setText(int resId) {
     45         mTab.setText(resId);
     46         return this;
     47     }
     48 
     49     @Override
     50     public CompatTab setIcon(int resId) {
     51         mTab.setIcon(resId);
     52         return this;
     53     }
     54 
     55     @Override
     56     public CompatTab setTabListener(CompatTabListener callback) {
     57         mCallback = callback;
     58         mTab.setTabListener(this);
     59         return this;
     60     }
     61 
     62     @Override
     63     public CharSequence getText() {
     64         return mTab.getText();
     65     }
     66 
     67     @Override
     68     public Drawable getIcon() {
     69         return mTab.getIcon();
     70     }
     71 
     72     @Override
     73     public Object getTab() {
     74         return mTab;
     75     }
     76 
     77     @Override
     78     public CompatTabListener getCallback() {
     79         return mCallback;
     80     }
     81 
     82     @Override
     83     public void onTabReselected(Tab tab, android.app.FragmentTransaction f) {
     84         FragmentTransaction ft = mActivity.getSupportFragmentManager().beginTransaction();
     85         ft.disallowAddToBackStack();
     86         mCallback.onTabReselected(this, ft);
     87         ft.commit();
     88     }
     89 
     90     @Override
     91     public void onTabSelected(Tab tab, android.app.FragmentTransaction f) {
     92         FragmentTransaction ft = mActivity.getSupportFragmentManager().beginTransaction();
     93         ft.disallowAddToBackStack();
     94         mCallback.onTabSelected(this, ft);
     95         ft.commit();
     96     }
     97 
     98     @Override
     99     public void onTabUnselected(Tab arg0, android.app.FragmentTransaction f) {
    100         FragmentTransaction ft = mActivity.getSupportFragmentManager().beginTransaction();
    101         ft.disallowAddToBackStack();
    102         mCallback.onTabUnselected(this, ft);
    103         ft.commit();
    104     }
    105 
    106     @Override
    107     public CompatTab setFragment(Fragment fragment) {
    108         mFragment = fragment;
    109         return this;
    110     }
    111 
    112     @Override
    113     public Fragment getFragment() {
    114         return mFragment;
    115     }
    116 }
    117