Android Open Source - feedhive Item Action Handler






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The source code is released under:

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 a  va2  s.com
 * 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.model;

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

import java.io.File;

import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import free.yhc.feeder.ItemViewActivity;
import free.yhc.feeder.R;
import free.yhc.feeder.UiHelper;
import free.yhc.feeder.db.ColumnItem;
import free.yhc.feeder.db.DBPolicy;

public class ItemActionHandler {
    private static final boolean DBG = false;
    private static final Utils.Logger P = new Utils.Logger(ItemActionHandler.class);

    public static final int REQC_ITEM_VIEW = 0;

    private final DBPolicy      mDbp = DBPolicy.get();
    private final RTTask        mRtt = RTTask.get();
    private final Activity      mActivity;
    private final Context       mContext;
    private final AdapterBridge mABridge;

    public interface AdapterBridge {
        void updateItemState(int pos, long state);
        void dataSetChanged(long id);
    }

    private void
    finalizeIntent(Intent intent) {
        if (null != mActivity)
            return;

        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
    }

    private boolean
    changeItemState_opened(long id, int position) {
        // change state as 'opened' at this moment.
        long state = mDbp.getItemInfoLong(id, ColumnItem.STATE);
        if (Feed.Item.isStateOpenNew(state)) {
            state = Utils.bitSet(state, Feed.Item.FSTAT_OPEN_OPENED, Feed.Item.MSTAT_OPEN);
            mDbp.updateItemAsync_state(id, state);
            mABridge.updateItemState(position, state);
            mABridge.dataSetChanged(id);
            return true;
        }
        return false;
    }

    private void
    onActionOpen_http(long action, long id, int position, String url, String protocol) {
        RTTask.TaskState state = mRtt.getState(id, RTTask.Action.DOWNLOAD);
        if (RTTask.TaskState.FAILED == state) {
            UiHelper.showTextToast(mContext, mRtt.getErr(id, RTTask.Action.DOWNLOAD).getMsgId());
            mRtt.consumeResult(id, RTTask.Action.DOWNLOAD);
            mABridge.dataSetChanged(id);
            return;
        }

        if (Feed.Channel.isActProgIn(action)) {
            Intent intent = new Intent(mContext, ItemViewActivity.class);
            intent.putExtra("id", id);
            finalizeIntent(intent);
            if (null != mActivity)
                mActivity.startActivityForResult(intent, REQC_ITEM_VIEW);
            else
                mContext.startActivity(intent);
        } else if (Feed.Channel.isActProgEx(action)) {
            Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
            try {
                mContext.startActivity(intent);
            } catch (ActivityNotFoundException e) {
                UiHelper.showTextToast(mContext,
                                       mContext.getResources().getText(R.string.warn_find_app_to_open).toString()
                                           + protocol);
                return;
            }
        } else
            eAssert(false);

        changeItemState_opened(id, position);
    }

    private void
    onActionOpen_rtsp(long action, long id, int position, String url, String protocol) {
        Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
        finalizeIntent(intent);
        try {
            mContext.startActivity(intent);
        } catch (ActivityNotFoundException e) {
            UiHelper.showTextToast(mContext,
                                   mContext.getResources().getText(R.string.warn_find_app_to_open).toString()
                                       + protocol);
            return;
        }

        changeItemState_opened(id, position);
    }

    private void
    onActionOpen(long action, long id, int position, String url) {
        String protocol = url.substring(0, url.indexOf("://"));
        if (protocol.equalsIgnoreCase("rtsp"))
            onActionOpen_rtsp(action, id, position, url, protocol);
        else // default : handle as http
            onActionOpen_http(action, id, position, url, protocol);
    }

    private void
    onActionDn(long action, long id, int position, String url, String encType) {
        // 'enclosure' is used.
        File f = ContentsManager.get().getItemInfoDataFile(id);
        eAssert(null != f);
        if (f.exists()) {
            // "RSS described media type" vs "mime type by guessing from file extention".
            // Experimentally, later is more accurate! (lots of RSS doesn't care about describing exact media type.)
            String type = Utils.guessMimeTypeFromUrl(url);
            if (null == type)
                type = encType;

            if (!Utils.isMimeType(type))
                type = "text/plain"; // this is default.


            // File is already exists. Do action with it!
            Intent intent = new Intent(Intent.ACTION_VIEW);
            if (null == type)
                intent.setData(Uri.fromFile(f));
            else
                intent.setDataAndType(Uri.fromFile(f), type);
            finalizeIntent(intent);

            try {
                mContext.startActivity(intent);
            } catch (ActivityNotFoundException e) {
                UiHelper.showTextToast(mContext,
                                       mContext.getResources().getText(R.string.warn_find_app_to_open).toString()
                                           + " [" + type + "]");
                return;
            }
            // change state as 'opened' at this moment.
            changeItemState_opened(id, position);
        } else {
            RTTask.TaskState state = mRtt.getState(id, RTTask.Action.DOWNLOAD);
            switch(state) {
            case IDLE: {
                File tmpf = Utils.getNewTempFile();
                if (null == tmpf)
                    UiHelper.showTextToast(mContext, R.string.err_iofile);
                else {
                    BGTaskDownloadToItemContent dnTask = new BGTaskDownloadToItemContent(url, id);
                    mRtt.register(id, RTTask.Action.DOWNLOAD, dnTask);
                    mRtt.start(id, RTTask.Action.DOWNLOAD);
                    mABridge.dataSetChanged(id);
                }
            } break;

            case RUNNING:
            case READY:
                mRtt.cancel(id, RTTask.Action.DOWNLOAD, null);
                mABridge.dataSetChanged(id);
                break;

            case CANCELING:
                UiHelper.showTextToast(mContext, R.string.wait_cancel);
                break;

            case FAILED: {
                Err result = mRtt.getErr(id, RTTask.Action.DOWNLOAD);
                UiHelper.showTextToast(mContext, result.getMsgId());
                mRtt.consumeResult(id, RTTask.Action.DOWNLOAD);
                mABridge.dataSetChanged(id);
            } break;

            default:
                eAssert(false);
            }
        }
    }

    public void
    onAction(long action, long id, final int position,
             String link, String enclosure, String encType) {
        // NOTE
        // This is very simple policy!
        long actionType = Feed.Channel.getActType(action);
        //String link = getListAdapter().getItemInfo_link(position);
        //String enclosure = getListAdapter().getItemInfo_encUrl(position);

        if (Feed.Channel.FACT_TYPE_DYNAMIC == actionType) {
            String url = FeedPolicy.getDynamicActionTargetUrl(action, link, enclosure);
            // NOTE
            // Items that have both invalid link and enclosure url, SHOULD NOT be added to DB.
            // Parser give those away in parsing phase.
            // See RSSParser/AtomParser.
            eAssert(null != url);
            if (enclosure.equals(url))
                onActionDn(action, id, position, url, encType);
            else
                onActionOpen(action, id, position, url);
        } else if (Feed.Channel.FACT_TYPE_EMBEDDED_MEDIA == actionType) {
            // In case of embedded media, external program should be used in force.
            action = Utils.bitSet(action, Feed.Channel.FACT_PROG_EX, Feed.Channel.MACT_PROG);
            onActionOpen(action, id, position, enclosure);
        } else
            eAssert(false);
    }

    public ItemActionHandler(Activity activity,
                             AdapterBridge bridge) {
        mABridge = bridge;
        mActivity = activity;
        mContext = null == mActivity? Environ.getAppContext(): mActivity;
    }
}




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