Android Open Source - feedhive Channel List Adapter






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SOFTWARE LICENSE ---------------- Copyright (C) 2012, 2013, 2014 Younghyung Cho. <yhcting77@gmail.com> All rights reserved. This file is part of FeedHive This program is licensed under the FreeBSD l...

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Java Source Code

/******************************************************************************
 * Copyright (C) 2012, 2013, 2014//from   w  w  w.j  av a2s. co m
 * Younghyung Cho. <yhcting77@gmail.com>
 * All rights reserved.
 *
 * This file is part of FeedHive
 *
 * This program is licensed under the FreeBSD license
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * The views and conclusions contained in the software and documentation
 * are those of the authors and should not be interpreted as representing
 * official policies, either expressed or implied, of the FreeBSD Project.
 *****************************************************************************/

package free.yhc.feeder;

import static free.yhc.feeder.model.Utils.eAssert;

import java.text.DateFormat;
import java.util.Date;
import java.util.HashMap;

import android.content.Context;
import android.database.Cursor;
import android.database.StaleDataException;
import android.graphics.Bitmap;
import android.view.View;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import free.yhc.feeder.db.ColumnChannel;
import free.yhc.feeder.db.DBPolicy;
import free.yhc.feeder.model.RTTask;
import free.yhc.feeder.model.UnexpectedExceptionHandler;
import free.yhc.feeder.model.Utils;

public class ChannelListAdapter extends AsyncCursorListAdapter implements
AsyncCursorAdapter.ItemBuilder {
    private static final boolean DBG = false;
    private static final Utils.Logger P = new Utils.Logger(ChannelListAdapter.class);

    private static final Date sDummyDate = new Date();
    private static final ColumnChannel[] sChannQueryColumns = new ColumnChannel[] {
        ColumnChannel.ID, // Mandatory.
        ColumnChannel.URL,
        ColumnChannel.TITLE,
        ColumnChannel.DESCRIPTION,
        ColumnChannel.LASTUPDATE,
        ColumnChannel.URL
    };

    private final DBPolicy mDbp = DBPolicy.get();
    private final RTTask   mRtt = RTTask.get();

    private final OnActionListener     mActionListener;
    private final View.OnClickListener mChIconOnClick;
    private final View.OnClickListener mPosUpOnClick;
    private final View.OnClickListener mPosDnOnClick;

    private final HashMap<View, Integer> mView2PosMap = new HashMap<View, Integer>();

    interface OnActionListener {
        void onUpdateClick(ImageView ibtn, long cid);
        void onMoveUpClick(ImageView ibtn, long cid);
        void onMoveDownClick(ImageView ibtn, long cid);
    }

    private static class ItemInfo {
        long        cid             = -1;
        String      url             = "";
        String      title           = "";
        String      desc            = "";
        Date        lastUpdate      = sDummyDate;
        long        maxItemId       = 0;
        long        oldLastItemId   = 0;
        Bitmap      bm              = null;
    }

    @Override
    public String
    dump(UnexpectedExceptionHandler.DumpLevel lv) {
        return super.dump(lv) + "[ ChannelListAdapter ]";
    }

    ChannelListAdapter(Context          context,
                       Cursor           cursor,
                       ListView         lv,
                       final int        dataReqSz,
                       final int        maxArrSz,
                       OnActionListener listener) {
        super(context,
              cursor,
              null,
              R.layout.channel_row,
              lv,
              new ItemInfo(),
              dataReqSz,
              maxArrSz,
              false);
        setItemBuilder(this);
        mActionListener = listener;

        mChIconOnClick = new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (null == mActionListener)
                    return;
                mActionListener.onUpdateClick((ImageView)v, (long)(Long)v.getTag());
            }
        };

        mPosUpOnClick = new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (null == mActionListener)
                    return;
                mActionListener.onMoveUpClick((ImageView)v, (long)(Long)v.getTag());
            }
        };

        mPosDnOnClick = new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (null == mActionListener)
                    return;
                mActionListener.onMoveDownClick((ImageView)v, (long)(Long)v.getTag());
            }
        };
    }

    public static Cursor
    getQueryCursor(long catId) {
        return DBPolicy.get().queryChannel(catId, sChannQueryColumns);
    }

    public int
    findPosition(long cid) {
        eAssert(Utils.isUiThread());
        for (int i = 0; i < getCount(); i++) {
            if (getItemInfo_cid(i) == cid)
                    return i;
        }
        return -1;
    }

    public int
    findItemId(long cid) {
        int pos = findPosition(cid);
        if (pos < 0)
            return -1;
        else
            return (int)getItemId(pos);
    }

    /**
     * Data is NOT reloaded.
     * Only item array is changed.
     * @param pos0
     * @param pos1
     */
    public void
    switchPos(int pos0, int pos1) {
        eAssert(Utils.isUiThread());
        Object sv = setItem(pos0, getItem(pos1));
        eAssert(null != sv);
        setItem(pos1, sv);
        notifyDataSetChanged();
    }

    /**
     * Data is NOT reloaded.
     * Only item array is changed.
     * @param pos0
     * @param pos1
     */
    public void
    notifyChannelIconChanged(long cid) {
        eAssert(Utils.isUiThread());
        ItemInfo ii = (ItemInfo)getItem(findPosition(cid));
        ii.bm = mDbp.getChannelImageBitmap(cid);
        notifyDataSetChanged();
    }

    public void
    removeChannel(long cid) {
        int pos = findPosition(cid);
        removeItem(pos);
    }

    public void
    appendChannel(long cid) {
        Cursor c = DBPolicy.get().queryChannel(sChannQueryColumns, ColumnChannel.ID, cid);
        c.moveToFirst();
        Object item = buildItem(this, c);
        c.close();
        insertItem(getCount(), item);
    }

    public long
    getItemInfo_cid(int position) {
        return ((ItemInfo)super.getItem(position)).cid;
    }

    /**
     * rebind view of given cid only.
     * @param cid
     */
    public void
    notifyChannelRttStateChanged(long cid) {
        int pos = findPosition(cid);
        if (pos < 0)
            return; // Not an visible channel
        for (View v : mView2PosMap.keySet().toArray(new View[0])) {
            if (pos == mView2PosMap.get(v)) {
                doBindView(v, (ItemInfo)getItem(pos));
                return;
            }
        }
    }

    @Override
    public Object
    buildItem(AsyncCursorAdapter adapter, Cursor c) {
        //logI("ChannelListAdapter : buildItem - START");
        ItemInfo i = new ItemInfo();
        try {
            i.cid = getCursorLong(c, ColumnChannel.ID);
            i.url = getCursorString(c, ColumnChannel.URL);
            i.title = getCursorString(c, ColumnChannel.TITLE);
            i.desc = getCursorString(c, ColumnChannel.DESCRIPTION);
            i.lastUpdate = new Date(getCursorLong(c, ColumnChannel.LASTUPDATE));
            i.maxItemId = mDbp.getItemInfoMaxId(i.cid);
            i.oldLastItemId = mDbp.getChannelInfoLong(i.cid, ColumnChannel.OLDLAST_ITEMID);
            i.bm = mDbp.getChannelImageBitmap(i.cid);
        } catch (StaleDataException e) {
            eAssert(false);
        }
        //logI("ChannelListAdapter : buildItem - END");
        return i;
    }

    @Override
    public void
    destroyItem(AsyncCursorAdapter adapter, Object item) {
        ItemInfo ii = (ItemInfo)item;
        // DO NOT recycle bitmap here!
        // bitmap is already cached!
        ii.bm = null;
    }

    @Override
    public int
    requestData(final AsyncAdapter adapter, Object priv, long nrseq, final int from, final int sz) {
        // Override to use "delayed item update"
        int ret;
        try {
            mDbp.getDelayedChannelUpdate();
            ret = super.requestData(adapter, priv, nrseq, from, sz);
        } finally {
            mDbp.putDelayedChannelUpdate();
        }
        return ret;
    }

    private void
    doBindView(View v, ItemInfo ii) {
        long nrNew = ii.maxItemId - ii.oldLastItemId;

        ImageView chIcon = (ImageView)v.findViewById(R.id.image);
        chIcon.setTag(ii.cid);
        chIcon.setOnClickListener(mChIconOnClick);

        ImageView ibtn = (ImageView)v.findViewById(R.id.imgup);
        ibtn.setTag(ii.cid);
        ibtn.setOnClickListener(mPosUpOnClick);

        ibtn = (ImageView)v.findViewById(R.id.imgdown);
        ibtn.setTag(ii.cid);
        ibtn.setOnClickListener(mPosDnOnClick);

        if (null == ii.bm)
            // fail to decode.
            chIcon.setImageResource(R.drawable.ic_warn_image);
        else
            chIcon.setImageBitmap(ii.bm);

        ImageView noti_up = (ImageView)v.findViewById(R.id.noti_update);
        ImageView noti_dn = (ImageView)v.findViewById(R.id.noti_download);

        RTTask.TaskState state = mRtt.getState(ii.cid, RTTask.Action.UPDATE);
        noti_up.setVisibility(View.VISIBLE);
        switch(state) {
        case IDLE:
            noti_up.setVisibility(View.GONE);
            break;

        case READY:
            noti_up.setImageResource(R.drawable.ic_pause);
            break;

        case RUNNING:
            noti_up.setImageResource(R.drawable.ic_refresh);
            break;

        case CANCELING:
            noti_up.setImageResource(R.drawable.ic_block);
            break;

        case FAILED:
            noti_up.setImageResource(R.drawable.ic_info);
            break;

        default:
            eAssert(false);
        }

        if (0 == mRtt.getItemsDownloading(ii.cid).length)
            noti_dn.setVisibility(View.GONE);
        else
            noti_dn.setVisibility(View.VISIBLE);

        String date = DateFormat.getInstance().format(ii.lastUpdate);
        // === Set 'age' ===
        // calculate age and convert to readable string.
        String age;
        { // just for temporal variable scope
            long ageTime = new Date().getTime() - ii.lastUpdate.getTime();
            // Show "day:hours"
            long ageHours = ageTime/ (1000 * 60 * 60);
            long ageDay = ageHours / 24;
            ageHours %= 24;
            age = String.format("%2d:%2d", ageDay, ageHours);
        }

        // If there is NO valid title for this channel, Just use URL as title.
        String title = Utils.isValidValue(ii.title)? ii.title: ii.url;
        ((TextView)v.findViewById(R.id.title)).setText(title);
        ((TextView)v.findViewById(R.id.description)).setText(ii.desc);
        ((TextView)v.findViewById(R.id.date)).setText(date);
        ((TextView)v.findViewById(R.id.age)).setText(age);
        ImageView msgImage = ((ImageView)v.findViewById(R.id.msg_img));
        if (nrNew > 0)
            msgImage.setVisibility(View.VISIBLE);
        else
            msgImage.setVisibility(View.GONE);
    }

    @Override
    protected void
    bindView(View v, final Context context, int position)  {
        if (DBG) P.v("Position : " + position);
        if (!preBindView(v, context, position))
            return;

        mView2PosMap.put(v, position);
        doBindView(v, (ItemInfo)getItem(position));
    }
}




Java Source Code List

free.yhc.feeder.AppWidgetCategoryChooserActivity.java
free.yhc.feeder.AppWidgetMenuActivity.java
free.yhc.feeder.AppWidgetUpdateCategoryActivity.java
free.yhc.feeder.AsyncAdapter.java
free.yhc.feeder.AsyncCursorAdapter.java
free.yhc.feeder.AsyncCursorListAdapter.java
free.yhc.feeder.ChannelListActivity.java
free.yhc.feeder.ChannelListAdapter.java
free.yhc.feeder.ChannelListFragment.java
free.yhc.feeder.ChannelListPagerAdapter.java
free.yhc.feeder.ChannelSettingActivity.java
free.yhc.feeder.DBManagerActivity.java
free.yhc.feeder.DiagAsyncTask.java
free.yhc.feeder.FeederActivity.java
free.yhc.feeder.FeederApp.java
free.yhc.feeder.FeederPreferenceActivity.java
free.yhc.feeder.FragmentPagerAdapterEx.java
free.yhc.feeder.ItemListActivity.java
free.yhc.feeder.ItemListAdapter.java
free.yhc.feeder.ItemViewActivity.java
free.yhc.feeder.LifeSupportService.java
free.yhc.feeder.NotiManager.java
free.yhc.feeder.PredefinedChannelActivity.java
free.yhc.feeder.ScheduledUpdateService.java
free.yhc.feeder.UiHelper.java
free.yhc.feeder.appwidget.AppWidgetUtils.java
free.yhc.feeder.appwidget.Provider.java
free.yhc.feeder.appwidget.UpdateService.java
free.yhc.feeder.appwidget.ViewsFactory.java
free.yhc.feeder.appwidget.ViewsService.java
free.yhc.feeder.db.ColumnCategory.java
free.yhc.feeder.db.ColumnChannel.java
free.yhc.feeder.db.ColumnItem.java
free.yhc.feeder.db.DBPolicy.java
free.yhc.feeder.db.DB.java
free.yhc.feeder.model.AssetSQLiteHelper.java
free.yhc.feeder.model.AtomParser.java
free.yhc.feeder.model.BGTaskDownloadToFile.java
free.yhc.feeder.model.BGTaskDownloadToItemContent.java
free.yhc.feeder.model.BGTaskManager.java
free.yhc.feeder.model.BGTaskUpdateChannel.java
free.yhc.feeder.model.BGTask.java
free.yhc.feeder.model.BaseBGTask.java
free.yhc.feeder.model.ContentsManager.java
free.yhc.feeder.model.DelayedAction.java
free.yhc.feeder.model.Environ.java
free.yhc.feeder.model.Err.java
free.yhc.feeder.model.FeedParser.java
free.yhc.feeder.model.FeedPolicy.java
free.yhc.feeder.model.Feed.java
free.yhc.feeder.model.FeederException.java
free.yhc.feeder.model.HtmlParser.java
free.yhc.feeder.model.ItemActionHandler.java
free.yhc.feeder.model.KeyBasedLinkedList.java
free.yhc.feeder.model.ListenerManager.java
free.yhc.feeder.model.NetLoader.java
free.yhc.feeder.model.RSSParser.java
free.yhc.feeder.model.RTTask.java
free.yhc.feeder.model.ThreadEx.java
free.yhc.feeder.model.UnexpectedExceptionHandler.java
free.yhc.feeder.model.UsageReport.java
free.yhc.feeder.model.Utils.java