public class ChangeListFragment extends Fragment {
private static final String TAG = ChangeListFragment.class.getSimpleName();
/**
* The {@link android.support.v4.view.PagerAdapter} that will provide fragments for each of the
* sections.
*/
private SectionsPagerAdapter mSectionsPagerAdapter;
private ViewPager mViewPager;
private FragmentActivity mParent;
private ArrayList<CharSequence> mTitles;
private EventBus mEventBus;
// This should be set to the status corresponding to the initially selected tab
private String mSelectedStatus = JSONCommit.Status.NEW.toString();
@Override
public View onCreateView(
LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.change_list, container, false);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
setupTabs();
}
/** MUST BE CALLED ON MAIN THREAD */
private void setupTabs() {
mParent = getActivity();
mEventBus = EventBus.getDefault();
// Create the adapter that will return a fragment for each of the three
// primary sections of the app.
mSectionsPagerAdapter = new SectionsPagerAdapter(mParent.getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
/** The {@link android.support.v4.view.ViewPager} that will host the section contents. */
mViewPager = (ViewPager) this.getView();
mViewPager.setAdapter(mSectionsPagerAdapter);
// When swiping between different sections, select the corresponding
// tab. We can also use ActionBar.Tab#select() to do this if we have
// a reference to the Tab.
mViewPager.addOnPageChangeListener(
new ViewPager.SimpleOnPageChangeListener() {
@Override
public void onPageSelected(int position) {
String status = mSectionsPagerAdapter.getStatusAtPostion(position);
mEventBus.post(new StatusSelected(status));
mSelectedStatus = status;
CardsFragment fragment = mSectionsPagerAdapter.getFragment(position);
if (fragment == null) {
// It may just have not been instantiated yet
fragment = (CardsFragment) mSectionsPagerAdapter.getItem(position);
if (fragment == null) {
Log.e(
TAG,
String.format("Cannot refresh the page selected at position %d", position));
return; // We cannot do any more here
}
}
fragment.refresh(false);
}
});
mTitles = new ArrayList<>();
for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++)
mTitles.add(mSectionsPagerAdapter.getPageTitle(i));
}
@Override
public void onDestroy() {
super.onDestroy();
mViewPager.clearOnPageChangeListeners();
}
public void refreshTabs() {
mSectionsPagerAdapter.refreshTabs();
}
public CardsFragment getCurrentFragment() {
return mSectionsPagerAdapter.getCurrentFragment();
}
public String getStatus() {
return mSelectedStatus;
}
/**
* A {@link android.support.v4.app.FragmentStatePagerAdapter} that returns a fragment
* corresponding to one of the sections/tabs/pages.
*/
class SectionsPagerAdapter extends FragmentStatePagerAdapter {
public int mPageCount = 3;
ReviewTab mReviewTab = null;
MergedTab mMergedTab = null;
AbandonedTab mAbandonedTab = null;
SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
public String getStatusAtPostion(int position) {
switch (position) {
case 0:
return JSONCommit.KEY_STATUS_OPEN;
case 1:
return JSONCommit.KEY_STATUS_MERGED;
case 2:
return JSONCommit.KEY_STATUS_ABANDONED;
default:
return null;
}
}
@Override
/**
* Called to instantiate the fragment for the given page. IMPORTANT: Do not use this to monitor
* the currently selected page as it is used to load neighbouring tabs that may not be selected.
*/
public Fragment getItem(int position) {
CardsFragment fragment;
switch (position) {
case 0:
fragment = new ReviewTab();
mReviewTab = (ReviewTab) fragment;
break;
case 1:
fragment = new MergedTab();
mMergedTab = (MergedTab) fragment;
break;
case 2:
fragment = new AbandonedTab();
mAbandonedTab = (AbandonedTab) fragment;
break;
default:
return null;
}
return fragment;
}
// The ViewPager monitors the current tab position so we can get the
// ViewPager from the enclosing class and use the fragment recording
// to get the current fragment
@Nullable
public CardsFragment getCurrentFragment() {
int pos = mViewPager.getCurrentItem();
return getFragment(pos);
}
public CardsFragment getFragment(int pos) {
switch (pos) {
case 0:
return mReviewTab;
case 1:
return mMergedTab;
case 2:
return mAbandonedTab;
default:
return null;
}
}
@Override
/** Return the number of views available. */
public int getCount() {
return mPageCount;
}
@Override
/** Called by the ViewPager to obtain a title string to describe the specified page. */
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return getString(R.string.reviewable);
case 1:
return getString(R.string.merged);
case 2:
return getString(R.string.abandoned);
}
return null;
}
private void refreshTabs() {
if (mReviewTab != null) mReviewTab.markDirty();
if (mMergedTab != null) mMergedTab.markDirty();
if (mAbandonedTab != null) mAbandonedTab.markDirty();
// Its possible the current fragment may be null... if that happens
// reload the page
CardsFragment currentFragment = getCurrentFragment();
if (currentFragment == null) {
onCreate(null);
} else {
currentFragment.refresh(true);
}
}
}
}
private void init() {
View currentFragment = this.getView();
ExpandableListView mListView =
(ExpandableListView) currentFragment.findViewById(R.id.commit_cards);
disconnectedView = currentFragment.findViewById(R.id.disconnected_view);
sIsLegacyVersion = !Config.isDiffSupported(mParent);
mAdapter = new CommitDetailsAdapter(mParent);
mListView.setAdapter(mAdapter);
// Child click listeners (relevant for the changes cards)
mListView.setChoiceMode(AbsListView.CHOICE_MODE_SINGLE);
mFilesCAB = new FilesCAB(mParent, !sIsLegacyVersion);
mAdapter.setContextualActionBar(mFilesCAB);
mListView.setOnItemLongClickListener(
new AdapterView.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
ExpandableListView listView = (ExpandableListView) parent;
long pos = listView.getExpandableListPosition(position);
int groupPos = ExpandableListView.getPackedPositionGroup(pos);
int childPos = ExpandableListView.getPackedPositionChild(pos);
if (!mAdapter.isLongClickSupported(groupPos, childPos)) {
return false;
}
// In case this is a group view and does not have the change number tagged
view.setTag(R.id.changeID, mSelectedChange);
FilesCAB.TagHolder holder =
new FilesCAB.TagHolder(view, mContext, groupPos, childPos >= 0);
// Set the title to be shown in the action bar
if (holder.filePath != null) {
mFilesCAB.setTitle(holder.filePath);
} else {
String s = mParent.getResources().getString(R.string.change_detail_heading);
mFilesCAB.setTitle(String.format(s, holder.changeNumber.intValue()));
}
mFilesCAB.setActionMode(getActivity().startActionMode(mFilesCAB));
ActionMode actionMode = mFilesCAB.getActionMode();
// Call requires API 14 (ICS)
actionMode.setTag(holder);
view.setSelected(true);
return true;
}
});
mListView.setOnChildClickListener(
new ExpandableListView.OnChildClickListener() {
@Override
public boolean onChildClick(
ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {
// This is only valid for the changed files group
int childItemType = mAdapter.getChildType(groupPosition, childPosition);
if (childItemType != CommitDetailsAdapter.Cards.CHANGED_FILES.ordinal()) {
return false;
}
// View the diff and close the CAB if a change diff could be viewed
boolean diffLaunched = PatchSetChangesCard.onViewClicked(mParent, v);
if (diffLaunched) {
ActionMode mode = mFilesCAB.getActionMode();
if (mode != null) mode.finish();
}
return diffLaunched;
}
});
// Remember to expand the groups which don't have a header otherwise they will not be shown
mListView.expandGroup(0);
Button retryButton = (Button) currentFragment.findViewById(R.id.btn_retry);
retryButton.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
sendRequest(GerritService.DataType.CommitDetails);
}
});
if (getArguments() == null) {
/** This should be the default value of {@link ChangeListFragment.mSelectedStatus } */
setStatus(JSONCommit.Status.NEW.toString());
loadChange(true);
} else {
Bundle args = getArguments();
setStatus(args.getString(STATUS));
String changeid = args.getString(CHANGE_ID);
mChangeNumber = args.getInt(CHANGE_NO);
if (changeid != null && !changeid.isEmpty()) {
loadChange(changeid);
}
}
mEventBus = EventBus.getDefault();
}
