NoteWidgetProvider.java

    /*
     * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
     *
     * Licensed under the Apache License, Version 2.0 (the "License");
     * you may not use this file except in compliance with the License.
     * You may obtain a copy of the License at
     *
     *        http://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing, software
     * distributed under the License is distributed on an "AS IS" BASIS,
     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     * See the License for the specific language governing permissions and
     * limitations under the License.
     */

    package net.micode.notes.widget;
    import android.app.PendingIntent;
    import android.appwidget.AppWidgetManager;
    import android.appwidget.AppWidgetProvider;
    import android.content.ContentValues;
    import android.content.Context;
    import android.content.Intent;
    import android.database.Cursor;
    import android.util.Log;
    import android.widget.RemoteViews;

    import net.micode.notes.R;
    import net.micode.notes.data.Notes;
    import net.micode.notes.data.Notes.NoteColumns;
    import net.micode.notes.tool.ResourceParser;
    import net.micode.notes.ui.NoteEditActivity;
    import net.micode.notes.ui.NotesListActivity;

    public abstract class NoteWidgetProvider extends AppWidgetProvider {
        public static final String [] PROJECTION = new String [] {
            NoteColumns.ID,
            NoteColumns.BG_COLOR_ID,
            NoteColumns.SNIPPET
        };

        public static final int COLUMN_ID           = 0;
        public static final int COLUMN_BG_COLOR_ID  = 1;
        public static final int COLUMN_SNIPPET      = 2;

        private static final String TAG = "NoteWidgetProvider";

        @Override
        public void onDeleted(Context context, int[] appWidgetIds) {
            ContentValues values = new ContentValues();
            values.put(NoteColumns.WIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID);
            for (int i = 0; i < appWidgetIds.length; i++) {
                context.getContentResolver().update(Notes.CONTENT_NOTE_URI,
                        values,
                        NoteColumns.WIDGET_ID + "=?",
                        new String[] { String.valueOf(appWidgetIds[i])});
            }
        }

        private Cursor getNoteWidgetInfo(Context context, int widgetId) {
            return context.getContentResolver().query(Notes.CONTENT_NOTE_URI,
                    PROJECTION,
                    NoteColumns.WIDGET_ID + "=? AND " + NoteColumns.PARENT_ID + "<>?",
                    new String[] { String.valueOf(widgetId), String.valueOf(Notes.ID_TRASH_FOLER) },
                    null);
        }

        protected void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
            update(context, appWidgetManager, appWidgetIds, false);
        }

        private void update(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds,
                boolean privacyMode) {
            for (int i = 0; i < appWidgetIds.length; i++) {
                if (appWidgetIds[i] != AppWidgetManager.INVALID_APPWIDGET_ID) {
                    int bgId = ResourceParser.getDefaultBgId(context);
                    String snippet = "";
                    Intent intent = new Intent(context, NoteEditActivity.class);
                    intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
                    intent.putExtra(Notes.INTENT_EXTRA_WIDGET_ID, appWidgetIds[i]);
                    intent.putExtra(Notes.INTENT_EXTRA_WIDGET_TYPE, getWidgetType());

                    Cursor c = getNoteWidgetInfo(context, appWidgetIds[i]);
                    if (c != null && c.moveToFirst()) {
                        if (c.getCount() > 1) {
                            Log.e(TAG, "Multiple message with same widget id:" + appWidgetIds[i]);
                            c.close();
                            return;
                        }
                        snippet = c.getString(COLUMN_SNIPPET);
                        bgId = c.getInt(COLUMN_BG_COLOR_ID);
                        intent.putExtra(Intent.EXTRA_UID, c.getLong(COLUMN_ID));
                        intent.setAction(Intent.ACTION_VIEW);
                    } else {
                        snippet = context.getResources().getString(R.string.widget_havenot_content);
                        intent.setAction(Intent.ACTION_INSERT_OR_EDIT);
                    }

                    if (c != null) {
                        c.close();
                    }

                    RemoteViews rv = new RemoteViews(context.getPackageName(), getLayoutId());
                    rv.setImageViewResource(R.id.widget_bg_image, getBgResourceId(bgId));
                    intent.putExtra(Notes.INTENT_EXTRA_BACKGROUND_ID, bgId);
                    /**
                     * Generate the pending intent to start host for the widget
                     */
                    PendingIntent pendingIntent = null;
                    if (privacyMode) {
                        rv.setTextViewText(R.id.widget_text,
                                context.getString(R.string.widget_under_visit_mode));
                        pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], new Intent(
                                context, NotesListActivity.class), PendingIntent.FLAG_UPDATE_CURRENT);
                    } else {
                        rv.setTextViewText(R.id.widget_text, snippet);
                        pendingIntent = PendingIntent.getActivity(context, appWidgetIds[i], intent,
                                PendingIntent.FLAG_UPDATE_CURRENT);
                    }

                    rv.setOnClickPendingIntent(R.id.widget_text, pendingIntent);
                    appWidgetManager.updateAppWidget(appWidgetIds[i], rv);
                }
            }
        }

        protected abstract int getBgResourceId(int bgId);

        protected abstract int getLayoutId();

        protected abstract int getWidgetType();
    }