Android Open Source - feedhive Ui Helper






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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/* w w w  .  jav a 2  s. 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.io.File;
import java.util.Iterator;
import java.util.LinkedList;

import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.Toast;
import free.yhc.feeder.db.ColumnItem;
import free.yhc.feeder.db.DBPolicy;
import free.yhc.feeder.model.ContentsManager;
import free.yhc.feeder.model.Err;
import free.yhc.feeder.model.Feed;
import free.yhc.feeder.model.RTTask;
import free.yhc.feeder.model.Utils;

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

    public interface EditTextDialogAction {
        void prepare(Dialog dialog, EditText edit);
        void onOk(Dialog dialog, EditText edit);
    }

    public interface OnCategorySelectedListener {
        void onSelected(long category, Object user);
    }

    public interface OnPostExecuteListener {
        void onPostExecute(Err err, Object user);
    }

    public interface OnConfirmDialogAction {
        void onOk(Dialog dialog);
        void onCancel(Dialog dialog);
    }

    public static class DeleteAllDnfilesWorker extends DiagAsyncTask.Worker {
        private final Context                 _mContext;
        private final OnPostExecuteListener   _mOnPostExecute;
        private final Object                  _mUser;
        public DeleteAllDnfilesWorker(Context context,
                                      OnPostExecuteListener onPostExecute,
                                      Object user) {
            _mContext = context;
            _mOnPostExecute = onPostExecute;
            _mUser = user;
        }

        @Override
        public Err
        doBackgroundWork(DiagAsyncTask task) {
            ContentsManager.get().cleanAllChannelDirs();
            return Err.NO_ERR;
        }

        @Override
        public void
        onPostExecute(DiagAsyncTask task, Err result) {
            if (Err.NO_ERR != result)
                UiHelper.showTextToast(_mContext, R.string.delete_downloadded_files_errmsg);
            if (null != _mOnPostExecute)
                _mOnPostExecute.onPostExecute(result, _mUser);
        }
    }

    public static class DeleteUsedDnfilesWorker extends DiagAsyncTask.Worker {
        private final long                    _mCid;
        private final Context                 _mContext;
        private final OnPostExecuteListener   _mOnPostExecute;
        private final Object                  _mUser;
        public DeleteUsedDnfilesWorker(long cid,
                                       Context context,
                                       OnPostExecuteListener onPostExecute,
                                       Object user) {
            _mCid = cid;
            _mContext = context;
            _mOnPostExecute = onPostExecute;
            _mUser = user;
        }

        @Override
        public Err
        doBackgroundWork(DiagAsyncTask task) {
            DBPolicy dbp = DBPolicy.get();
            ContentsManager cm = ContentsManager.get();
            LinkedList<File> l = new LinkedList<File>();
            if (_mCid > 0)
                l = cm.getContentFiles(new long[] { _mCid });
            else
                l = cm.getContentFiles();

            // check each content file to know whether they are valid or not.
            LinkedList<Long> idsl = new LinkedList<Long>();
            Iterator<File> i = l.iterator();
            while (i.hasNext()) {
                File f = i.next();
                long id = cm.getIdFromContentFileName(f.getName());
                if (0 > id)
                    // unexpected content file.
                    continue;
                long state = dbp.getItemInfoLong(id, ColumnItem.STATE);
                if (!Feed.Item.isStateOpenNew(state))
                    idsl.add(id);
            }
            cm.deleteItemContents(Utils.convertArrayLongTolong(idsl.toArray(new Long[0])));
            return Err.NO_ERR;
        }

        @Override
        public void
        onPostExecute(DiagAsyncTask task, Err result) {
            if (Err.NO_ERR != result)
                UiHelper.showTextToast(_mContext, R.string.delete_downloadded_files_errmsg);
            if (null != _mOnPostExecute)
                _mOnPostExecute.onPostExecute(result, _mUser);
        }
    }


    /**
     * This is for future use...
     * @param context
     * @param root
     */
    private static void
    showToast(Context context, ViewGroup root) {
        Toast t = Toast.makeText(context, "", Toast.LENGTH_SHORT);
        t.setGravity(Gravity.CENTER, 0, 0);
        t.setView(root);
        t.show();
    }

    public static View
    inflateLayout(Context context, int layout) {
        LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        return inflater.inflate(layout, null);
    }

    public static void
    showTextToast(Context context, String text) {
        Toast t = Toast.makeText(context, text, Toast.LENGTH_SHORT);
        t.setGravity(Gravity.CENTER, 0, 0);
        t.show();
    }

    public static void
    showTextToast(Context context, int textid) {
        Toast t = Toast.makeText(context, textid, Toast.LENGTH_SHORT);
        t.setGravity(Gravity.CENTER, 0, 0);
        t.show();
    }

    public static AlertDialog
    createAlertDialog(Context context, int icon, CharSequence title, CharSequence message) {
        eAssert(null != title);
        AlertDialog.Builder builder = new AlertDialog.Builder(context);
        AlertDialog dialog = builder.create();
        if (0 != icon)
            dialog.setIcon(icon);
        dialog.setTitle(title);
        if (null != message)
            dialog.setMessage(message);
        return dialog;
    }

    public static AlertDialog
    createAlertDialog(Context context, int icon, int title, int message) {
        eAssert(0 != title);
        CharSequence t = context.getResources().getText(title);
        CharSequence msg = (0 == message)? null: context.getResources().getText(message);
        return createAlertDialog(context, icon, t, msg);
    }

    public static AlertDialog
    createWarningDialog(Context context, CharSequence title, CharSequence message) {
        return createAlertDialog(context, R.drawable.ic_alert, title, message);
    }

    public static AlertDialog
    createWarningDialog(Context context, int title, int message) {
        return createWarningDialog(context,
                                   context.getResources().getText(title),
                                   context.getResources().getText(message));
    }

    public static AlertDialog
    createEditTextDialog(Context context, View layout, CharSequence title) {
        // Create "Enter Url" dialog
        AlertDialog.Builder builder = new AlertDialog.Builder(context);
        builder.setView(layout);

        final AlertDialog dialog = builder.create();
        dialog.setTitle(title);
        dialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
        return dialog;
    }

    public static AlertDialog
    createEditTextDialog(Context context, View layout, int title) {
        return createEditTextDialog(context, layout, context.getResources().getText(title));
    }

    public static AlertDialog
    buildOneLineEditTextDialog(final Context context, final CharSequence title, final EditTextDialogAction action) {
        // Create "Enter Url" dialog
        View layout = inflateLayout(context, R.layout.oneline_editbox_dialog);
        final AlertDialog dialog = createEditTextDialog(context, layout, title);
        // Set action for dialog.
        final EditText edit = (EditText)layout.findViewById(R.id.editbox);
        edit.setOnKeyListener(new View.OnKeyListener() {
            @Override
            public boolean
            onKey(View v, int keyCode, KeyEvent event) {
                // If the event is a key-down event on the "enter" button
                if ((KeyEvent.ACTION_DOWN == event.getAction()) && (KeyEvent.KEYCODE_ENTER == keyCode)) {
                    dialog.dismiss();
                    if (!edit.getText().toString().isEmpty())
                        action.onOk(dialog, ((EditText)v));
                    return true;
                }
                return false;
            }
        });
        action.prepare(dialog, edit);

        dialog.setButton(AlertDialog.BUTTON_POSITIVE, context.getResources().getText(R.string.ok),
                         new DialogInterface.OnClickListener() {
            @Override
            public void
            onClick(DialogInterface dia, int which) {
                dialog.dismiss();
                if (!edit.getText().toString().isEmpty())
                    action.onOk(dialog, edit);
            }
        });

        dialog.setButton(AlertDialog.BUTTON_NEGATIVE, context.getResources().getText(R.string.cancel),
                          new DialogInterface.OnClickListener() {
            @Override
            public void
            onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
            }
        });
        return dialog;
    }

    public static AlertDialog
    buildOneLineEditTextDialog(final Context context, final int title, final EditTextDialogAction action) {
        return buildOneLineEditTextDialog(context, context.getResources().getText(title), action);
    }

    public static AlertDialog
    buildConfirmDialog(final Context context,
                       final CharSequence title,
                       final CharSequence description,
                       final OnConfirmDialogAction action) {
        final AlertDialog dialog = createAlertDialog(context, R.drawable.ic_info, title, description);
        dialog.setButton(AlertDialog.BUTTON_POSITIVE, context.getResources().getText(R.string.yes),
                         new DialogInterface.OnClickListener() {
            @Override
            public void
            onClick(DialogInterface diag, int which) {
                action.onOk(dialog);
                dialog.dismiss();
            }
        });

        dialog.setButton(AlertDialog.BUTTON_NEGATIVE, context.getResources().getText(R.string.no),
                          new DialogInterface.OnClickListener() {
            @Override
            public void
            onClick(DialogInterface diag, int which) {
                action.onCancel(dialog);
                dialog.dismiss();
            }
        });
        return dialog;
    }

    public static AlertDialog
    buildConfirmDialog(final Context context,
                       final int title,
                       final int description,
                       final OnConfirmDialogAction action) {
        return buildConfirmDialog(context,
                                  context.getResources().getText(title),
                                  context.getResources().getText(description),
                                  action);
    }

    public static AlertDialog
    selectCategoryDialog(final Context  context,
                         final int      title,
                         final OnCategorySelectedListener action,
                         final long     catIdExcluded,
                         final Object   user) {
        // Create Adapter for list and set it.
        DBPolicy dbp = DBPolicy.get();
        Feed.Category[] cats = dbp.getCategories();

        int nrExcluded = 0;
        for (Feed.Category cat : cats) {
            if (cat.id == catIdExcluded) {
                nrExcluded = 1;
                break;
            }
        }

        final String[] menus = new String[cats.length - nrExcluded];
        final long[] catIds = new long[cats.length - nrExcluded];
        int i = 0;
        for (Feed.Category cat : cats) {
            if (cat.id != catIdExcluded) {
                if (!Utils.isValidValue(cat.name)
                    && dbp.isDefaultCategoryId(cat.id))
                    menus[i] = context.getResources().getText(R.string.default_category_name).toString();
                else
                    menus[i] = cat.name;

                catIds[i++] = cat.id;
            }
        }

        AlertDialog.Builder bldr = new AlertDialog.Builder(context);
        ArrayAdapter<String> adapter
            = new ArrayAdapter<String>(context, android.R.layout.select_dialog_item, menus);
        bldr.setAdapter(adapter, new DialogInterface.OnClickListener() {
            @Override
            public void
            onClick(DialogInterface dialog, int which) {
                action.onSelected(catIds[which], user);
                dialog.dismiss();
            }
        });
        bldr.setTitle(title);
        return bldr.create();
    }

    public static AlertDialog
    buildDeleteAllDnFilesConfirmDialog(final Context context,
                                       final OnPostExecuteListener onPostExecute,
                                       final Object postExecuteUser) {
        // check constraints
        if (RTTask.get().getItemsDownloading().length > 0)
            return null;

        OnConfirmDialogAction action = new OnConfirmDialogAction() {
            @Override
            public void
            onOk(Dialog dialog) {
                DiagAsyncTask task = new DiagAsyncTask(context,
                                                       new DeleteAllDnfilesWorker(context,
                                                                                  onPostExecute,
                                                                                  postExecuteUser),
                                                       DiagAsyncTask.Style.SPIN,
                                                       R.string.delete_all_downloadded_file);
                task.run();
            }

            @Override
            public void
            onCancel(Dialog dialog) {
                if (null != onPostExecute)
                    onPostExecute.onPostExecute(Err.USER_CANCELLED, postExecuteUser);
            }
        };

        return buildConfirmDialog(context,
                                  R.string.delete_all_downloadded_file,
                                  R.string.delete_all_downloadded_file_msg,
                                  action);
    }

    /**
     * @param cid
     *     0 means 'all channels'
     * @param context
     * @param onPostExecute
     * @param postExecuteUser
     * @return
     */
    public static AlertDialog
    buildDeleteUsedDnFilesConfirmDialog(final long cid,
                                        final Context context,
                                        final OnPostExecuteListener onPostExecute,
                                        final Object postExecuteUser) {
        // check constraints
        if (RTTask.get().getItemsDownloading().length > 0)
            return null;

        final int resTitle;
        final int resMsg;
        if (0 < cid) {
            resTitle = R.string.delete_used_downloadded_file;
            resMsg = R.string.delete_channel_used_downloadded_file_msg;
        } else {
            resTitle = R.string.delete_all_used_downloadded_file;
            resMsg = R.string.delete_all_used_downloadded_file_msg;
        }

        OnConfirmDialogAction action = new OnConfirmDialogAction() {
            @Override
            public void
            onOk(Dialog dialog) {
                DiagAsyncTask task = new DiagAsyncTask(context,
                                                       new DeleteUsedDnfilesWorker(cid,
                                                                                   context,
                                                                                   onPostExecute,
                                                                                   postExecuteUser),
                                                       DiagAsyncTask.Style.SPIN,
                                                       resTitle);
                task.run();
            }

            @Override
            public void
            onCancel(Dialog dialog) {
                if (null != onPostExecute)
                    onPostExecute.onPostExecute(Err.USER_CANCELLED, postExecuteUser);
            }
        };

        return buildConfirmDialog(context, resTitle, resMsg, action);
    }
}




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