Twidere-App-Android-Twitter.../twidere/src/main/java/org/mariotaku/twidere/fragment/support/AbsContentRecyclerViewFragm...

343 lines
12 KiB
Java

/*
* Twidere - Twitter client for Android
*
* Copyright (C) 2012-2015 Mariotaku Lee <mariotaku.lee@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.mariotaku.twidere.fragment.support;
import android.app.Activity;
import android.content.Context;
import android.graphics.Rect;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.FragmentActivity;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v4.widget.SwipeRefreshLayout.OnRefreshListener;
import android.support.v7.widget.FixedLinearLayoutManager;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import org.mariotaku.twidere.R;
import org.mariotaku.twidere.activity.iface.IControlBarActivity;
import org.mariotaku.twidere.activity.iface.IControlBarActivity.ControlBarOffsetListener;
import org.mariotaku.twidere.adapter.LoadMoreSupportAdapter;
import org.mariotaku.twidere.adapter.decorator.DividerItemDecoration;
import org.mariotaku.twidere.fragment.iface.RefreshScrollTopInterface;
import org.mariotaku.twidere.util.ContentListScrollListener;
import org.mariotaku.twidere.util.ContentListScrollListener.ContentListSupport;
import org.mariotaku.twidere.util.SimpleDrawerCallback;
import org.mariotaku.twidere.util.ThemeUtils;
import org.mariotaku.twidere.util.TwidereColorUtils;
import org.mariotaku.twidere.util.Utils;
import org.mariotaku.twidere.view.HeaderDrawerLayout.DrawerCallback;
/**
* Comment, blah, blah, blah.
* Created by mariotaku on 15/4/16.
*/
public abstract class AbsContentRecyclerViewFragment<A extends LoadMoreSupportAdapter> extends BaseSupportFragment
implements OnRefreshListener, DrawerCallback, RefreshScrollTopInterface, ControlBarOffsetListener,
ContentListSupport {
private View mProgressContainer;
private SwipeRefreshLayout mSwipeRefreshLayout;
private RecyclerView mRecyclerView;
private View mErrorContainer;
private ImageView mErrorIconView;
private TextView mErrorTextView;
private LinearLayoutManager mLayoutManager;
private A mAdapter;
// Callbacks and listeners
private SimpleDrawerCallback mDrawerCallback;
private ContentListScrollListener mScrollListener;
// Data fields
private Rect mSystemWindowsInsets = new Rect();
private DividerItemDecoration mItemDecoration;
@Override
public boolean canScroll(float dy) {
return mDrawerCallback.canScroll(dy);
}
@Override
public void cancelTouch() {
mDrawerCallback.cancelTouch();
}
@Override
public void fling(float velocity) {
mDrawerCallback.fling(velocity);
}
@Override
public boolean isScrollContent(float x, float y) {
return mDrawerCallback.isScrollContent(x, y);
}
@Override
public void onControlBarOffsetChanged(IControlBarActivity activity, float offset) {
updateRefreshProgressOffset();
}
@Override
public void onRefresh() {
triggerRefresh();
}
@Override
public void setUserVisibleHint(boolean isVisibleToUser) {
super.setUserVisibleHint(isVisibleToUser);
updateRefreshProgressOffset();
}
@Override
public void scrollBy(float dy) {
mDrawerCallback.scrollBy(dy);
}
@Override
public boolean scrollToStart() {
mLayoutManager.scrollToPositionWithOffset(0, 0);
mRecyclerView.stopScroll();
setControlVisible(true);
return true;
}
@Override
public void setControlVisible(boolean visible) {
final FragmentActivity activity = getActivity();
if (activity instanceof IControlBarActivity) {
((IControlBarActivity) activity).setControlBarVisibleAnimate(visible);
}
}
@Override
public boolean shouldLayoutHeaderBottom() {
return mDrawerCallback.shouldLayoutHeaderBottom();
}
@Override
public void topChanged(int offset) {
mDrawerCallback.topChanged(offset);
}
@Override
public A getAdapter() {
return mAdapter;
}
@Override
public abstract boolean isRefreshing();
public LinearLayoutManager getLayoutManager() {
return mLayoutManager;
}
public void setRefreshing(final boolean refreshing) {
final boolean currentRefreshing = mSwipeRefreshLayout.isRefreshing();
if (!currentRefreshing) {
updateRefreshProgressOffset();
}
if (refreshing == currentRefreshing) return;
final boolean layoutRefreshing = refreshing && !mAdapter.isLoadMoreIndicatorVisible();
mSwipeRefreshLayout.setRefreshing(layoutRefreshing);
}
@Override
public void onLoadMoreContents() {
setLoadMoreIndicatorVisible(true);
setRefreshEnabled(false);
}
public final RecyclerView getRecyclerView() {
return mRecyclerView;
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
if (activity instanceof IControlBarActivity) {
((IControlBarActivity) activity).registerControlBarOffsetListener(this);
}
}
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_content_recyclerview, container, false);
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
mDrawerCallback = new SimpleDrawerCallback(mRecyclerView);
final View view = getView();
if (view == null) throw new AssertionError();
final Context context = view.getContext();
final boolean compact = Utils.isCompactCards(context);
final int backgroundColor = ThemeUtils.getThemeBackgroundColor(context);
final int colorRes = TwidereColorUtils.getContrastYIQ(backgroundColor,
R.color.bg_refresh_progress_color_light, R.color.bg_refresh_progress_color_dark);
mSwipeRefreshLayout.setOnRefreshListener(this);
mSwipeRefreshLayout.setProgressBackgroundColorSchemeResource(colorRes);
mAdapter = onCreateAdapter(context, compact);
mLayoutManager = new FixedLinearLayoutManager(context);
mLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
mRecyclerView.setLayoutManager(mLayoutManager);
mRecyclerView.setHasFixedSize(true);
mRecyclerView.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getActionMasked() == MotionEvent.ACTION_DOWN) {
updateRefreshProgressOffset();
}
return false;
}
});
if (compact) {
mItemDecoration = new DividerItemDecoration(context, mLayoutManager.getOrientation());
mRecyclerView.addItemDecoration(mItemDecoration);
}
mRecyclerView.setAdapter(mAdapter);
mScrollListener = new ContentListScrollListener(this);
mScrollListener.setTouchSlop(ViewConfiguration.get(context).getScaledTouchSlop());
}
@Override
public void onStart() {
super.onStart();
mRecyclerView.addOnScrollListener(mScrollListener);
}
@Override
public void onStop() {
mRecyclerView.removeOnScrollListener(mScrollListener);
super.onStop();
}
@Override
public void onBaseViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onBaseViewCreated(view, savedInstanceState);
mProgressContainer = view.findViewById(R.id.progress_container);
mSwipeRefreshLayout = (SwipeRefreshLayout) view.findViewById(R.id.swipe_layout);
mRecyclerView = (RecyclerView) view.findViewById(R.id.recycler_view);
mErrorContainer = view.findViewById(R.id.error_container);
mErrorIconView = (ImageView) view.findViewById(R.id.error_icon);
mErrorTextView = (TextView) view.findViewById(R.id.error_text);
}
@Override
public void onDetach() {
final FragmentActivity activity = getActivity();
if (activity instanceof IControlBarActivity) {
((IControlBarActivity) activity).unregisterControlBarOffsetListener(this);
}
super.onDetach();
}
@NonNull
protected Rect getExtraContentPadding() {
return new Rect();
}
@Override
protected void fitSystemWindows(Rect insets) {
final Rect extraPadding = getExtraContentPadding();
mRecyclerView.setPadding(insets.left + extraPadding.left, insets.top + extraPadding.top,
insets.right + extraPadding.right, insets.bottom + extraPadding.bottom);
mErrorContainer.setPadding(insets.left, insets.top, insets.right, insets.bottom);
mProgressContainer.setPadding(insets.left, insets.top, insets.right, insets.bottom);
mSystemWindowsInsets.set(insets);
updateRefreshProgressOffset();
}
public void setLoadMoreIndicatorVisible(boolean visible) {
if (mItemDecoration != null) {
mItemDecoration.setDecorationEndOffset(visible ? 1 : 0);
}
mAdapter.setLoadMoreIndicatorVisible(visible);
}
public void setRefreshEnabled(boolean enabled) {
mSwipeRefreshLayout.setEnabled(enabled);
}
@Override
public boolean triggerRefresh() {
return false;
}
@NonNull
protected abstract A onCreateAdapter(Context context, boolean compact);
protected final void showContent() {
mErrorContainer.setVisibility(View.GONE);
mProgressContainer.setVisibility(View.GONE);
mSwipeRefreshLayout.setVisibility(View.VISIBLE);
}
protected final void showProgress() {
mErrorContainer.setVisibility(View.GONE);
mProgressContainer.setVisibility(View.VISIBLE);
mSwipeRefreshLayout.setVisibility(View.GONE);
}
protected final void showError(int icon, CharSequence text) {
mErrorContainer.setVisibility(View.VISIBLE);
mProgressContainer.setVisibility(View.GONE);
mSwipeRefreshLayout.setVisibility(View.GONE);
mErrorIconView.setImageResource(icon);
mErrorTextView.setText(text);
}
protected final void showEmpty(int icon, CharSequence text) {
mErrorContainer.setVisibility(View.VISIBLE);
mProgressContainer.setVisibility(View.GONE);
mSwipeRefreshLayout.setVisibility(View.VISIBLE);
mErrorIconView.setImageResource(icon);
mErrorTextView.setText(text);
}
protected void updateRefreshProgressOffset() {
final FragmentActivity activity = getActivity();
if (!(activity instanceof IControlBarActivity) || mSystemWindowsInsets.top == 0 || mSwipeRefreshLayout == null
|| isRefreshing()) {
return;
}
final float density = getResources().getDisplayMetrics().density;
final int progressCircleDiameter = mSwipeRefreshLayout.getProgressCircleDiameter();
final IControlBarActivity control = (IControlBarActivity) activity;
final int controlBarOffsetPixels = Math.round(control.getControlBarHeight() * (1 - control.getControlBarOffset()));
final int swipeStart = (mSystemWindowsInsets.top - controlBarOffsetPixels) - progressCircleDiameter;
// 64: SwipeRefreshLayout.DEFAULT_CIRCLE_TARGET
final int swipeDistance = Math.round(64 * density);
mSwipeRefreshLayout.setProgressViewOffset(false, swipeStart, swipeStart + swipeDistance);
}
}