[Android] Re,pve Prompt.java
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zilmar
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/****************************************************************************
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* *
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* Project64 - A Nintendo 64 emulator. *
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* http://www.pj64-emu.com/ *
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* Copyright (C) 2012 Project64. All rights reserved. *
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* *
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* License: *
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* GNU/GPLv2 http://www.gnu.org/licenses/gpl-2.0.html *
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* *
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****************************************************************************/
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package emu.project64.dialog;
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import java.io.File;
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import java.util.List;
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import emu.project64.R;
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import android.content.Context;
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import android.text.TextUtils;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.ArrayAdapter;
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import android.widget.ImageView;
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import android.widget.TextView;
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/**
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* A utility class that generates dialogs to prompt the user for information.
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*/
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public final class Prompt
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{
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/**
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* An interface that simplifies the population of list items.
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*
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* @param <T> The type of the data to be wrapped.
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* @see Prompt#createAdapter(Context, List, int, int, ListItemPopulator)
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*/
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public interface ListItemPopulator<T>
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{
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public void onPopulateListItem( T item, int position, View view );
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}
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/**
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* An interface that simplifies the population of list items having two text fields and an icon.
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*
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* @param <T> The type of the data to be wrapped.
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* @see Prompt#createAdapter(Context, List, ListItemTwoTextIconPopulator)
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*/
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public interface ListItemTwoTextIconPopulator<T>
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{
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public void onPopulateListItem( T item, int position, TextView text1, TextView text2,
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ImageView icon );
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}
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/**
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* Create a {@link ListAdapter} where each list item has a specified layout.
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*
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* @param <T> The type of the data to be wrapped.
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* @param context The current context.
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* @param items The data source for the list items.
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* @param layoutResId The layout resource to be used for each list item.
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* @param textResId The {@link TextView} resource within the layout to be populated by default.
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* @param populator The object to populate the fields in each list item.
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*
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* @return An adapter that can be used to create list dialogs.
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*/
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public static <T> ArrayAdapter<T> createAdapter( Context context, List<T> items,
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final int layoutResId, final int textResId, final ListItemPopulator<T> populator )
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{
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return new ArrayAdapter<T>( context, layoutResId, textResId, items )
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{
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@Override
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public View getView( int position, View convertView, ViewGroup parent )
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{
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View row;
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if( convertView == null )
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{
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LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(
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Context.LAYOUT_INFLATER_SERVICE );
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row = (View) inflater.inflate( layoutResId, null );
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}
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else
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{
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row = (View) convertView;
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}
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populator.onPopulateListItem( getItem( position ), position, row );
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return row;
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}
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};
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}
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/**
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* Create a {@link ListAdapter} where each list item has two text fields and an icon.
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*
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* @param <T> The type of the data to be wrapped.
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* @param context The activity context.
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* @param items The data source for list items.
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* @param populator The object to populate the fields in each list item.
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*
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* @return An adapter that can be used to create list dialogs.
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*/
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public static <T> ArrayAdapter<T> createAdapter( Context context, List<T> items,
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final ListItemTwoTextIconPopulator<T> populator )
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{
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return createAdapter( context, items, R.layout.list_item_two_text_icon, R.id.text1,
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new ListItemPopulator<T>()
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{
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@Override
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public void onPopulateListItem( T item, int position, View view )
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{
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TextView text1 = (TextView) view.findViewById( R.id.text1 );
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TextView text2 = (TextView) view.findViewById( R.id.text2 );
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ImageView icon = (ImageView) view.findViewById( R.id.icon );
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populator.onPopulateListItem( item, position, text1, text2, icon );
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}
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} );
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}
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public static ArrayAdapter<String> createFilenameAdapter( Context context, List<String> paths,
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final List<CharSequence> names )
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{
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return createAdapter( context, paths, new ListItemTwoTextIconPopulator<String>()
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{
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@Override
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public void onPopulateListItem( String path, int position, TextView text1,
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TextView text2, ImageView icon )
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{
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if( !TextUtils.isEmpty( path ) )
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{
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String name = names.get( position ).toString();
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if( name.equals( ".." ) )
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{
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text1.setText( R.string.pathPreference_parentFolder );
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icon.setVisibility( View.VISIBLE );
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icon.setImageResource( R.drawable.ic_arrow_u );
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}
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else
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{
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File file = new File( path );
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text1.setText( name );
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if( file.isDirectory() )
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{
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icon.setVisibility( View.VISIBLE );
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icon.setImageResource( R.drawable.ic_folder );
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}
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else
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{
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icon.setVisibility( View.GONE );
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icon.setImageResource( 0 );
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}
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}
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text2.setVisibility( View.GONE );
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text2.setText( null );
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}
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}
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} );
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}
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}
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