gecko/mobile/android/base/home/MostRecentPage.java
2013-08-06 18:06:33 -07:00

394 lines
13 KiB
Java

/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko.home;
import org.mozilla.gecko.R;
import org.mozilla.gecko.db.BrowserDB;
import org.mozilla.gecko.db.BrowserDB.URLColumns;
import org.mozilla.gecko.home.HomePager.OnUrlOpenListener;
import org.mozilla.gecko.home.TwoLinePageRow;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.Context;
import android.database.Cursor;
import android.os.Bundle;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.Loader;
import android.support.v4.widget.SimpleCursorAdapter;
import android.util.SparseArray;
import android.view.View;
import android.view.ViewGroup;
import android.view.LayoutInflater;
import android.widget.AdapterView;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import java.util.Date;
/**
* Fragment that displays recent history in a ListView.
*/
public class MostRecentPage extends HomeFragment {
// Logging tag name
private static final String LOGTAG = "GeckoMostRecentPage";
// Cursor loader ID for history query
private static final int LOADER_ID_HISTORY = 0;
// Adapter for the list of search results
private MostRecentAdapter mAdapter;
// The view shown by the fragment.
private ListView mList;
// Callbacks used for the search and favicon cursor loaders
private CursorLoaderCallbacks mCursorLoaderCallbacks;
// On URL open listener
private OnUrlOpenListener mUrlOpenListener;
public static MostRecentPage newInstance() {
return new MostRecentPage();
}
public MostRecentPage() {
mUrlOpenListener = null;
}
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
try {
mUrlOpenListener = (OnUrlOpenListener) activity;
} catch (ClassCastException e) {
throw new ClassCastException(activity.toString()
+ " must implement HomePager.OnUrlOpenListener");
}
}
@Override
public void onDetach() {
super.onDetach();
mUrlOpenListener = null;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.home_most_recent_page, container, false);
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
final TextView title = (TextView) view.findViewById(R.id.title);
title.setText(R.string.home_most_recent_title);
mList = (ListView) view.findViewById(R.id.list);
mList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
position -= mAdapter.getMostRecentSectionsCountBefore(position);
final Cursor c = mAdapter.getCursor();
if (c == null || !c.moveToPosition(position)) {
return;
}
final String url = c.getString(c.getColumnIndexOrThrow(URLColumns.URL));
mUrlOpenListener.onUrlOpen(url);
}
});
// Set empty page view.
final View emptyView = view.findViewById(R.id.home_empty_view);
((ImageView) emptyView.findViewById(R.id.home_empty_image)).setImageResource(R.drawable.icon_most_recent_empty);
((TextView) emptyView.findViewById(R.id.home_empty_text)).setText(R.string.home_most_recent_empty);
mList.setEmptyView(emptyView);
registerForContextMenu(mList);
}
@Override
public void onDestroyView() {
super.onDestroyView();
mList = null;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
final Activity activity = getActivity();
// Intialize adapter
mAdapter = new MostRecentAdapter(activity);
mList.setAdapter(mAdapter);
// Create callbacks before the initial loader is started
mCursorLoaderCallbacks = new CursorLoaderCallbacks(activity, getLoaderManager());
loadIfVisible();
}
@Override
protected void load() {
getLoaderManager().initLoader(LOADER_ID_HISTORY, null, mCursorLoaderCallbacks);
}
private static class MostRecentCursorLoader extends SimpleCursorLoader {
// Max number of history results
private static final int HISTORY_LIMIT = 100;
public MostRecentCursorLoader(Context context) {
super(context);
}
@Override
public Cursor loadCursor() {
final ContentResolver cr = getContext().getContentResolver();
return BrowserDB.getRecentHistory(cr, HISTORY_LIMIT);
}
}
private static class MostRecentAdapter extends SimpleCursorAdapter {
private static final int ROW_HEADER = 0;
private static final int ROW_STANDARD = 1;
private static final int ROW_TYPE_COUNT = 2;
// For the time sections in history
private static final long MS_PER_DAY = 86400000;
private static final long MS_PER_WEEK = MS_PER_DAY * 7;
// The time ranges for each section
private static enum MostRecentSection {
TODAY,
YESTERDAY,
WEEK,
OLDER
};
private final Context mContext;
// Maps headers in the list with their respective sections
private final SparseArray<MostRecentSection> mMostRecentSections;
public MostRecentAdapter(Context context) {
super(context, -1, null, new String[] {}, new int[] {});
mContext = context;
// Initialize map of history sections
mMostRecentSections = new SparseArray<MostRecentSection>();
}
@Override
public Object getItem(int position) {
final int type = getItemViewType(position);
// Header items are not in the cursor
if (type == ROW_HEADER) {
return null;
}
return super.getItem(position - getMostRecentSectionsCountBefore(position));
}
@Override
public int getItemViewType(int position) {
if (mMostRecentSections.get(position) != null) {
return ROW_HEADER;
}
return ROW_STANDARD;
}
@Override
public int getViewTypeCount() {
// view can be either a standard page row, or a header row
return ROW_TYPE_COUNT;
}
@Override
public boolean isEnabled(int position) {
return (getItemViewType(position) == ROW_STANDARD);
}
@Override
public int getCount() {
// Add the history section headers to the number of reported results.
return super.getCount() + mMostRecentSections.size();
}
@Override
public Cursor swapCursor(Cursor cursor) {
Cursor oldCursor = super.swapCursor(cursor);
loadMostRecentSections(cursor);
return oldCursor;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
final int type = getItemViewType(position);
if (type == ROW_HEADER) {
final TextView row;
if (convertView == null) {
row = (TextView) LayoutInflater.from(mContext).inflate(R.layout.home_header_row, parent, false);
} else {
row = (TextView) convertView;
}
final MostRecentSection section = mMostRecentSections.get(position);
row.setText(getMostRecentSectionTitle(section));
return row;
} else {
final TwoLinePageRow row;
if (convertView == null) {
row = (TwoLinePageRow) LayoutInflater.from(mContext).inflate(R.layout.home_item_row, parent, false);
} else {
row = (TwoLinePageRow) convertView;
}
// Account for the search engines
position -= getMostRecentSectionsCountBefore(position);
final Cursor c = getCursor();
if (!c.moveToPosition(position)) {
throw new IllegalStateException("Couldn't move cursor to position " + position);
}
row.updateFromCursor(c);
return row;
}
}
private String getMostRecentSectionTitle(MostRecentSection section) {
switch (section) {
case TODAY:
return mContext.getString(R.string.history_today_section);
case YESTERDAY:
return mContext.getString(R.string.history_yesterday_section);
case WEEK:
return mContext.getString(R.string.history_week_section);
case OLDER:
return mContext.getString(R.string.history_older_section);
}
throw new IllegalStateException("Unrecognized history section");
}
private int getMostRecentSectionsCountBefore(int position) {
// Account for the number headers before the given position
int sectionsBefore = 0;
final int historySectionsCount = mMostRecentSections.size();
for (int i = 0; i < historySectionsCount; i++) {
final int sectionPosition = mMostRecentSections.keyAt(i);
if (sectionPosition > position) {
break;
}
sectionsBefore++;
}
return sectionsBefore;
}
private static MostRecentSection getMostRecentSectionForTime(long from, long time) {
long delta = from - time;
if (delta < 0) {
return MostRecentSection.TODAY;
}
if (delta < MS_PER_DAY) {
return MostRecentSection.YESTERDAY;
}
if (delta < MS_PER_WEEK) {
return MostRecentSection.WEEK;
}
return MostRecentSection.OLDER;
}
private void loadMostRecentSections(Cursor c) {
if (c == null || !c.moveToFirst()) {
return;
}
// Clear any history sections that may have been loaded before.
mMostRecentSections.clear();
final Date now = new Date();
now.setHours(0);
now.setMinutes(0);
now.setSeconds(0);
final long today = now.getTime();
MostRecentSection section = null;
do {
final int position = c.getPosition();
final long time = c.getLong(c.getColumnIndexOrThrow(URLColumns.DATE_LAST_VISITED));
final MostRecentSection itemSection = MostRecentAdapter.getMostRecentSectionForTime(today, time);
if (section != itemSection) {
section = itemSection;
mMostRecentSections.append(position + mMostRecentSections.size(), section);
}
// Reached the last section, no need to continue
if (section == MostRecentSection.OLDER) {
break;
}
} while (c.moveToNext());
}
}
private class CursorLoaderCallbacks extends HomeCursorLoaderCallbacks {
public CursorLoaderCallbacks(Context context, LoaderManager loaderManager) {
super(context, loaderManager);
}
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
if (id == LOADER_ID_HISTORY) {
return new MostRecentCursorLoader(getActivity());
} else {
return super.onCreateLoader(id, args);
}
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor c) {
if (loader.getId() == LOADER_ID_HISTORY) {
mAdapter.swapCursor(c);
loadFavicons(c);
} else {
super.onLoadFinished(loader, c);
}
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {
if (loader.getId() == LOADER_ID_HISTORY) {
mAdapter.swapCursor(null);
} else {
super.onLoaderReset(loader);
}
}
@Override
public void onFaviconsLoaded() {
mAdapter.notifyDataSetChanged();
}
}
}