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Extend BlogActivity to also show individual posts
This allows for swiping left/right to read other posts by using a ViewPager. This hasn't been done as a separate activity, but with fragments, so both can share the `BlogPersistentData` without needing to reload it. Closes #428
This commit is contained in:
Torsten Grote
@@ -0,0 +1,191 @@
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package org.briarproject.android.blogs;
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import android.content.Intent;
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import android.os.Bundle;
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import android.support.annotation.Nullable;
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import android.support.design.widget.Snackbar;
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import android.support.v4.app.ActivityCompat;
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import android.support.v4.app.ActivityOptionsCompat;
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import android.support.v7.widget.LinearLayoutManager;
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import android.view.LayoutInflater;
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import android.view.Menu;
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import android.view.MenuInflater;
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import android.view.MenuItem;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.Toast;
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import org.briarproject.R;
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import org.briarproject.android.ActivityComponent;
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import org.briarproject.android.blogs.BlogController.BlogPostListener;
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import org.briarproject.android.blogs.BlogPostAdapter.OnBlogPostClickListener;
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import org.briarproject.android.controller.handler.UiResultHandler;
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import org.briarproject.android.fragment.BaseFragment;
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import org.briarproject.android.util.BriarRecyclerView;
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import org.briarproject.api.sync.GroupId;
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import java.util.Collection;
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import javax.inject.Inject;
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import static android.support.design.widget.Snackbar.LENGTH_LONG;
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import static android.support.v4.app.ActivityOptionsCompat.makeCustomAnimation;
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import static android.widget.Toast.LENGTH_SHORT;
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import static org.briarproject.android.BriarActivity.GROUP_ID;
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import static org.briarproject.android.blogs.BlogActivity.BLOG_NAME;
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import static org.briarproject.android.blogs.BlogActivity.IS_MY_BLOG;
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import static org.briarproject.android.blogs.BlogActivity.IS_NEW_BLOG;
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import static org.briarproject.android.blogs.BlogActivity.REQUEST_WRITE_POST;
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public class BlogFragment extends BaseFragment implements BlogPostListener {
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public final static String TAG = BlogFragment.class.getName();
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@Inject
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BlogController blogController;
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private GroupId groupId;
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private String blogName;
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private boolean myBlog;
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private BlogPostAdapter adapter;
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private BriarRecyclerView list;
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static BlogFragment newInstance(GroupId groupId, String name,
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boolean myBlog, boolean isNew) {
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BlogFragment f = new BlogFragment();
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Bundle bundle = new Bundle();
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bundle.putByteArray(GROUP_ID, groupId.getBytes());
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bundle.putString(BLOG_NAME, name);
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bundle.putBoolean(IS_MY_BLOG, myBlog);
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bundle.putBoolean(IS_NEW_BLOG, isNew);
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f.setArguments(bundle);
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return f;
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}
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@Nullable
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@Override
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public View onCreateView(LayoutInflater inflater, ViewGroup container,
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Bundle savedInstanceState) {
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setHasOptionsMenu(true);
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Bundle args = getArguments();
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byte[] b = args.getByteArray(GROUP_ID);
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if (b == null) throw new IllegalStateException("No Group found.");
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groupId = new GroupId(b);
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blogName = args.getString(BLOG_NAME);
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myBlog = args.getBoolean(IS_MY_BLOG);
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boolean isNew = args.getBoolean(IS_NEW_BLOG);
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View v = inflater.inflate(R.layout.fragment_blog, container, false);
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adapter = new BlogPostAdapter(getActivity(),
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(OnBlogPostClickListener) getActivity());
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list = (BriarRecyclerView) v.findViewById(R.id.postList);
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list.setLayoutManager(new LinearLayoutManager(getActivity()));
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list.setAdapter(adapter);
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if (myBlog) {
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list.setEmptyText(
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getString(R.string.blogs_my_blogs_blog_empty_state));
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} else {
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list.setEmptyText(getString(R.string.blogs_other_blog_empty_state));
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}
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// show snackbar if this blog was just created
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if (isNew) {
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Snackbar s = Snackbar.make(list, R.string.blogs_my_blogs_created,
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LENGTH_LONG);
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s.getView().setBackgroundResource(R.color.briar_primary);
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s.show();
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// show only once
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args.putBoolean(IS_NEW_BLOG, false);
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}
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return v;
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}
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@Override
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public void injectFragment(ActivityComponent component) {
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component.inject(this);
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}
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@Override
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public void onStart() {
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super.onStart();
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loadData(false);
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}
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@Override
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public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
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if (myBlog) {
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inflater.inflate(R.menu.blogs_my_blog_actions, menu);
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}
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super.onCreateOptionsMenu(menu, inflater);
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}
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@Override
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public boolean onOptionsItemSelected(final MenuItem item) {
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switch (item.getItemId()) {
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case android.R.id.home:
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getActivity().onBackPressed();
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return true;
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case R.id.action_write_blog_post:
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Intent i =
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new Intent(getActivity(), WriteBlogPostActivity.class);
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i.putExtra(GROUP_ID, groupId.getBytes());
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i.putExtra(BLOG_NAME, blogName);
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ActivityOptionsCompat options =
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makeCustomAnimation(getActivity(),
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android.R.anim.slide_in_left,
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android.R.anim.slide_out_right);
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ActivityCompat.startActivityForResult(getActivity(), i,
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REQUEST_WRITE_POST, options.toBundle());
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return true;
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default:
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return super.onOptionsItemSelected(item);
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}
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}
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@Override
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public String getUniqueTag() {
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return TAG;
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}
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@Override
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public void onBlogPostAdded(BlogPostItem post, boolean local) {
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adapter.add(post);
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if (local) list.scrollToPosition(0);
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}
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private void loadData(final boolean reload) {
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blogController.loadBlog(groupId, reload,
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new UiResultHandler<Boolean>(getActivity()) {
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@Override
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public void onResultUi(Boolean result) {
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if (result) {
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Collection<BlogPostItem> posts =
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blogController.getBlogPosts();
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if (posts.size() > 0) {
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adapter.addAll(posts);
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if (reload) list.scrollToPosition(0);
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} else {
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list.showData();
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}
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} else {
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Toast.makeText(getActivity(),
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R.string.blogs_blog_failed_to_load,
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LENGTH_SHORT).show();
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getActivity().supportFinishAfterTransition();
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}
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}
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});
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}
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void reload() {
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loadData(true);
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}
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}
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