mirror of
https://github.com/mozilla/gecko-dev.git
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384 lines
13 KiB
Java
384 lines
13 KiB
Java
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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package org.mozilla.gecko.home;
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import org.mozilla.gecko.R;
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import org.mozilla.gecko.db.BrowserContract.Combined;
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import org.mozilla.gecko.db.BrowserDB;
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import org.mozilla.gecko.db.BrowserContract.Bookmarks;
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import org.mozilla.gecko.db.BrowserDB.URLColumns;
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import org.mozilla.gecko.home.HomePager.OnUrlOpenListener;
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import org.mozilla.gecko.home.TwoLinePageRow;
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import android.app.Activity;
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import android.content.ContentResolver;
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import android.content.Context;
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import android.database.Cursor;
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import android.os.Bundle;
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import android.support.v4.app.LoaderManager;
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import android.support.v4.app.LoaderManager.LoaderCallbacks;
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import android.support.v4.content.Loader;
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import android.util.SparseArray;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewStub;
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import android.view.ViewGroup;
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import android.widget.AdapterView;
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import android.widget.ImageView;
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import android.widget.ListView;
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import android.widget.TextView;
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import java.util.Date;
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import java.util.EnumSet;
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/**
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* Fragment that displays recent history in a ListView.
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*/
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public class MostRecentPanel extends HomeFragment {
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// Logging tag name
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private static final String LOGTAG = "GeckoMostRecentPanel";
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// Cursor loader ID for history query
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private static final int LOADER_ID_HISTORY = 0;
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// Adapter for the list of search results
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private MostRecentAdapter mAdapter;
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// The view shown by the fragment.
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private HomeListView mList;
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// Reference to the View to display when there are no results.
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private View mEmptyView;
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// Callbacks used for the search and favicon cursor loaders
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private CursorLoaderCallbacks mCursorLoaderCallbacks;
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// On URL open listener
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private OnUrlOpenListener mUrlOpenListener;
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public static MostRecentPanel newInstance() {
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return new MostRecentPanel();
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}
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public MostRecentPanel() {
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mUrlOpenListener = null;
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}
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@Override
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public void onAttach(Activity activity) {
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super.onAttach(activity);
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try {
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mUrlOpenListener = (OnUrlOpenListener) activity;
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} catch (ClassCastException e) {
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throw new ClassCastException(activity.toString()
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+ " must implement HomePager.OnUrlOpenListener");
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}
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}
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@Override
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public void onDetach() {
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super.onDetach();
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mUrlOpenListener = null;
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}
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@Override
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public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
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return inflater.inflate(R.layout.home_most_recent_panel, container, false);
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}
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@Override
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public void onViewCreated(View view, Bundle savedInstanceState) {
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mList = (HomeListView) view.findViewById(R.id.list);
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mList.setTag(HomePager.LIST_TAG_MOST_RECENT);
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mList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
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@Override
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public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
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position -= mAdapter.getMostRecentSectionsCountBefore(position);
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final Cursor c = mAdapter.getCursor(position);
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final String url = c.getString(c.getColumnIndexOrThrow(URLColumns.URL));
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// This item is a TwoLinePageRow, so we allow switch-to-tab.
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mUrlOpenListener.onUrlOpen(url, EnumSet.of(OnUrlOpenListener.Flags.ALLOW_SWITCH_TO_TAB));
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}
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});
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mList.setContextMenuInfoFactory(new HomeListView.ContextMenuInfoFactory() {
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@Override
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public HomeContextMenuInfo makeInfoForCursor(View view, int position, long id, Cursor cursor) {
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final HomeContextMenuInfo info = new HomeContextMenuInfo(view, position, id);
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info.url = cursor.getString(cursor.getColumnIndexOrThrow(Combined.URL));
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info.title = cursor.getString(cursor.getColumnIndexOrThrow(Combined.TITLE));
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info.display = cursor.getInt(cursor.getColumnIndexOrThrow(Combined.DISPLAY));
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info.historyId = cursor.getInt(cursor.getColumnIndexOrThrow(Combined.HISTORY_ID));
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final int bookmarkIdCol = cursor.getColumnIndexOrThrow(Combined.BOOKMARK_ID);
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if (cursor.isNull(bookmarkIdCol)) {
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// If this is a combined cursor, we may get a history item without a
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// bookmark, in which case the bookmarks ID column value will be null.
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info.bookmarkId = -1;
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} else {
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info.bookmarkId = cursor.getInt(bookmarkIdCol);
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}
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return info;
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}
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});
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registerForContextMenu(mList);
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}
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@Override
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public void onDestroyView() {
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super.onDestroyView();
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mList = null;
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mEmptyView = null;
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}
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@Override
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public void onActivityCreated(Bundle savedInstanceState) {
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super.onActivityCreated(savedInstanceState);
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// Intialize adapter
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mAdapter = new MostRecentAdapter(getActivity());
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mList.setAdapter(mAdapter);
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// Create callbacks before the initial loader is started
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mCursorLoaderCallbacks = new CursorLoaderCallbacks();
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loadIfVisible();
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}
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@Override
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protected void load() {
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getLoaderManager().initLoader(LOADER_ID_HISTORY, null, mCursorLoaderCallbacks);
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}
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private static class MostRecentCursorLoader extends SimpleCursorLoader {
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// Max number of history results
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private static final int HISTORY_LIMIT = 100;
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public MostRecentCursorLoader(Context context) {
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super(context);
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}
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@Override
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public Cursor loadCursor() {
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final ContentResolver cr = getContext().getContentResolver();
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return BrowserDB.getRecentHistory(cr, HISTORY_LIMIT);
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}
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}
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private void updateUiFromCursor(Cursor c) {
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if (c != null && c.getCount() > 0) {
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return;
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}
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// Cursor is empty, so set the empty view if it hasn't been set already.
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if (mEmptyView == null) {
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// Set empty panel view. We delay this so that the empty view won't flash.
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final ViewStub emptyViewStub = (ViewStub) getView().findViewById(R.id.home_empty_view_stub);
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mEmptyView = emptyViewStub.inflate();
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final ImageView emptyIcon = (ImageView) mEmptyView.findViewById(R.id.home_empty_image);
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emptyIcon.setImageResource(R.drawable.icon_most_recent_empty);
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final TextView emptyText = (TextView) mEmptyView.findViewById(R.id.home_empty_text);
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emptyText.setText(R.string.home_most_recent_empty);
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mList.setEmptyView(mEmptyView);
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}
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}
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private static class MostRecentAdapter extends MultiTypeCursorAdapter {
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private static final int ROW_HEADER = 0;
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private static final int ROW_STANDARD = 1;
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private static final int[] VIEW_TYPES = new int[] { ROW_STANDARD, ROW_HEADER };
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private static final int[] LAYOUT_TYPES = new int[] { R.layout.home_item_row, R.layout.home_header_row };
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// For the time sections in history
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private static final long MS_PER_DAY = 86400000;
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private static final long MS_PER_WEEK = MS_PER_DAY * 7;
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// The time ranges for each section
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private static enum MostRecentSection {
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TODAY,
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YESTERDAY,
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WEEK,
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OLDER
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};
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private final Context mContext;
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// Maps headers in the list with their respective sections
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private final SparseArray<MostRecentSection> mMostRecentSections;
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public MostRecentAdapter(Context context) {
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super(context, null, VIEW_TYPES, LAYOUT_TYPES);
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mContext = context;
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// Initialize map of history sections
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mMostRecentSections = new SparseArray<MostRecentSection>();
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}
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@Override
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public Object getItem(int position) {
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final int type = getItemViewType(position);
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// Header items are not in the cursor
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if (type == ROW_HEADER) {
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return null;
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}
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return super.getItem(position - getMostRecentSectionsCountBefore(position));
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}
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@Override
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public int getItemViewType(int position) {
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if (mMostRecentSections.get(position) != null) {
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return ROW_HEADER;
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}
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return ROW_STANDARD;
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}
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@Override
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public boolean isEnabled(int position) {
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return (getItemViewType(position) == ROW_STANDARD);
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}
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@Override
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public int getCount() {
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// Add the history section headers to the number of reported results.
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return super.getCount() + mMostRecentSections.size();
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}
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@Override
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public Cursor swapCursor(Cursor cursor) {
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loadMostRecentSections(cursor);
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Cursor oldCursor = super.swapCursor(cursor);
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return oldCursor;
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}
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@Override
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public void bindView(View view, Context context, int position) {
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final int type = getItemViewType(position);
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if (type == ROW_HEADER) {
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final MostRecentSection section = mMostRecentSections.get(position);
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final TextView row = (TextView) view;
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row.setText(getMostRecentSectionTitle(section));
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} else {
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// Account for the most recent section headers
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position -= getMostRecentSectionsCountBefore(position);
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final Cursor c = getCursor(position);
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final TwoLinePageRow row = (TwoLinePageRow) view;
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row.updateFromCursor(c);
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}
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}
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private String getMostRecentSectionTitle(MostRecentSection section) {
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switch (section) {
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case TODAY:
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return mContext.getString(R.string.history_today_section);
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case YESTERDAY:
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return mContext.getString(R.string.history_yesterday_section);
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case WEEK:
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return mContext.getString(R.string.history_week_section);
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case OLDER:
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return mContext.getString(R.string.history_older_section);
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}
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throw new IllegalStateException("Unrecognized history section");
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}
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private int getMostRecentSectionsCountBefore(int position) {
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// Account for the number headers before the given position
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int sectionsBefore = 0;
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final int historySectionsCount = mMostRecentSections.size();
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for (int i = 0; i < historySectionsCount; i++) {
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final int sectionPosition = mMostRecentSections.keyAt(i);
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if (sectionPosition > position) {
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break;
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}
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sectionsBefore++;
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}
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return sectionsBefore;
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}
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private static MostRecentSection getMostRecentSectionForTime(long from, long time) {
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long delta = from - time;
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if (delta < 0) {
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return MostRecentSection.TODAY;
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}
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if (delta < MS_PER_DAY) {
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return MostRecentSection.YESTERDAY;
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}
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if (delta < MS_PER_WEEK) {
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return MostRecentSection.WEEK;
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}
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return MostRecentSection.OLDER;
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}
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private void loadMostRecentSections(Cursor c) {
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// Clear any history sections that may have been loaded before.
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mMostRecentSections.clear();
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if (c == null || !c.moveToFirst()) {
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return;
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}
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final Date now = new Date();
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now.setHours(0);
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now.setMinutes(0);
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now.setSeconds(0);
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final long today = now.getTime();
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MostRecentSection section = null;
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do {
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final int position = c.getPosition();
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final long time = c.getLong(c.getColumnIndexOrThrow(URLColumns.DATE_LAST_VISITED));
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final MostRecentSection itemSection = MostRecentAdapter.getMostRecentSectionForTime(today, time);
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if (section != itemSection) {
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section = itemSection;
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mMostRecentSections.append(position + mMostRecentSections.size(), section);
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}
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// Reached the last section, no need to continue
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if (section == MostRecentSection.OLDER) {
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break;
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}
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} while (c.moveToNext());
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}
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}
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private class CursorLoaderCallbacks implements LoaderCallbacks<Cursor> {
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@Override
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public Loader<Cursor> onCreateLoader(int id, Bundle args) {
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return new MostRecentCursorLoader(getActivity());
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}
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@Override
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public void onLoadFinished(Loader<Cursor> loader, Cursor c) {
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mAdapter.swapCursor(c);
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updateUiFromCursor(c);
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}
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@Override
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public void onLoaderReset(Loader<Cursor> loader) {
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mAdapter.swapCursor(null);
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}
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}
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}
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