David Morrissey | 44e2492 | 2017-11-20 10:36:41 +0000 | [diff] [blame] | 1 | package com.davemorrissey.labs.subscaleview.test; |
David Morrissey | c930ef7 | 2017-11-02 18:27:22 +0000 | [diff] [blame] | 2 | |
| 3 | import android.app.ActionBar; |
| 4 | import android.os.Bundle; |
| 5 | import android.support.annotation.Nullable; |
| 6 | import android.support.v4.app.FragmentActivity; |
| 7 | import android.view.MenuItem; |
| 8 | |
| 9 | import java.util.List; |
| 10 | |
| 11 | public abstract class AbstractFragmentsActivity extends FragmentActivity { |
| 12 | |
| 13 | private static final String BUNDLE_PAGE = "page"; |
| 14 | |
| 15 | private int page; |
| 16 | |
| 17 | private final int title; |
| 18 | private final int layout; |
| 19 | private final List<Page> notes; |
| 20 | |
| 21 | protected abstract void onPageChanged(int page); |
| 22 | |
| 23 | protected AbstractFragmentsActivity(int title, int layout, List<Page> notes) { |
| 24 | this.title = title; |
| 25 | this.layout = layout; |
| 26 | this.notes = notes; |
| 27 | } |
| 28 | |
| 29 | @Override |
| 30 | protected void onCreate(@Nullable Bundle savedInstanceState) { |
| 31 | super.onCreate(savedInstanceState); |
| 32 | setContentView(layout); |
| 33 | ActionBar actionBar = getActionBar(); |
| 34 | if (actionBar != null) { |
| 35 | actionBar.setTitle(getString(title)); |
| 36 | actionBar.setDisplayHomeAsUpEnabled(true); |
| 37 | } |
| 38 | if (savedInstanceState != null && savedInstanceState.containsKey(BUNDLE_PAGE)) { |
| 39 | page = savedInstanceState.getInt(BUNDLE_PAGE); |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | @Override |
| 44 | protected void onResume() { |
| 45 | super.onResume(); |
| 46 | updateNotes(); |
| 47 | } |
| 48 | |
| 49 | @Override |
| 50 | protected void onSaveInstanceState(Bundle outState) { |
| 51 | super.onSaveInstanceState(outState); |
| 52 | outState.putInt(BUNDLE_PAGE, page); |
| 53 | } |
| 54 | |
| 55 | @Override |
| 56 | public boolean onOptionsItemSelected(MenuItem item) { |
| 57 | finish(); |
| 58 | return true; |
| 59 | } |
| 60 | |
| 61 | public void next() { |
| 62 | page++; |
| 63 | updateNotes(); |
| 64 | } |
| 65 | |
| 66 | public void previous() { |
| 67 | page--; |
| 68 | updateNotes(); |
| 69 | } |
| 70 | |
| 71 | private void updateNotes() { |
| 72 | if (page > notes.size() - 1) { |
| 73 | return; |
| 74 | } |
| 75 | ActionBar actionBar = getActionBar(); |
| 76 | if (actionBar != null) { |
| 77 | actionBar.setSubtitle(notes.get(page).getSubtitle()); |
| 78 | } |
| 79 | onPageChanged(page); |
| 80 | } |
| 81 | |
| 82 | } |