Android Open Source - Munin-for-Android Resource Drag Sort Cursor Adapter

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The source code is released under:

GNU General Public License

Java Source Code

/*
 * Copyright (C) 2011 The Android Open Source Project
 */*  w  w w .j  a v  a  2s.c  o  m*/
 * 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 com.mobeta.android.dslv;

import android.content.Context;
import android.database.Cursor;
import android.view.View;
import android.view.ViewGroup;
import android.view.LayoutInflater;

// taken from v4 rev. 10 ResourceCursorAdapter.java

/**
 * Static library support version of the framework's {@link android.widget.ResourceCursorAdapter}.
 * Used to write apps that run on platforms prior to Android 3.0.  When running
 * on Android 3.0 or above, this implementation is still used; it does not try
 * to switch to the framework's implementation.  See the framework SDK
 * documentation for a class overview.
 */
public abstract class ResourceDragSortCursorAdapter extends DragSortCursorAdapter {
    private int mLayout;

    private int mDropDownLayout;
    
    private LayoutInflater mInflater;
    
    /**
     * Constructor the enables auto-requery.
     *
     * @deprecated This option is discouraged, as it results in Cursor queries
     * being performed on the application's UI thread and thus can cause poor
     * responsiveness or even Application Not Responding errors.  As an alternative,
     * use {@link android.app.LoaderManager} with a {@link android.content.CursorLoader}.
     *
     * @param context The context where the ListView associated with this adapter is running
     * @param layout resource identifier of a layout file that defines the views
     *            for this list item.  Unless you override them later, this will
     *            define both the item views and the drop down views.
     */
    @Deprecated
    public ResourceDragSortCursorAdapter(Context context, int layout, Cursor c) {
        super(context, c);
        mLayout = mDropDownLayout = layout;
        mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }
    
    /**
     * Constructor with default behavior as per
     * {@link CursorAdapter#CursorAdapter(Context, Cursor, boolean)}; it is recommended
     * you not use this, but instead {@link #ResourceCursorAdapter(Context, int, Cursor, int)}.
     * When using this constructor, {@link #FLAG_REGISTER_CONTENT_OBSERVER}
     * will always be set.
     *
     * @param context The context where the ListView associated with this adapter is running
     * @param layout resource identifier of a layout file that defines the views
     *            for this list item.  Unless you override them later, this will
     *            define both the item views and the drop down views.
     * @param c The cursor from which to get the data.
     * @param autoRequery If true the adapter will call requery() on the
     *                    cursor whenever it changes so the most recent
     *                    data is always displayed.  Using true here is discouraged.
     */
    public ResourceDragSortCursorAdapter(Context context, int layout, Cursor c, boolean autoRequery) {
        super(context, c, autoRequery);
        mLayout = mDropDownLayout = layout;
        mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    /**
     * Standard constructor.
     *
     * @param context The context where the ListView associated with this adapter is running
     * @param layout Resource identifier of a layout file that defines the views
     *            for this list item.  Unless you override them later, this will
     *            define both the item views and the drop down views.
     * @param c The cursor from which to get the data.
     * @param flags Flags used to determine the behavior of the adapter,
     * as per {@link CursorAdapter#CursorAdapter(Context, Cursor, int)}.
     */
    public ResourceDragSortCursorAdapter(Context context, int layout, Cursor c, int flags) {
        super(context, c, flags);
        mLayout = mDropDownLayout = layout;
        mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    /**
     * Inflates view(s) from the specified XML file.
     * 
     * @see android.widget.CursorAdapter#newView(android.content.Context,
     *      android.database.Cursor, ViewGroup)
     */
    @Override
    public View newView(Context context, Cursor cursor, ViewGroup parent) {
        return mInflater.inflate(mLayout, parent, false);
    }

    @Override
    public View newDropDownView(Context context, Cursor cursor, ViewGroup parent) {
        return mInflater.inflate(mDropDownLayout, parent, false);
    }

    /**
     * <p>Sets the layout resource of the item views.</p>
     *
     * @param layout the layout resources used to create item views
     */
    public void setViewResource(int layout) {
        mLayout = layout;
    }
    
    /**
     * <p>Sets the layout resource of the drop down views.</p>
     *
     * @param dropDownLayout the layout resources used to create drop down views
     */
    public void setDropDownViewResource(int dropDownLayout) {
        mDropDownLayout = dropDownLayout;
    }
}

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