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      1 /*
      2  * Copyright (C) 2016 Google Inc.
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
      5  * use this file except in compliance with the License. You may obtain a copy of
      6  * the License at
      7  *
      8  * http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
     12  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
     13  * License for the specific language governing permissions and limitations under
     14  * the License.
     15  */
     16 
     17 package com.googlecode.android_scripting.activity;
     18 
     19 import android.app.ListActivity;
     20 import android.content.Context;
     21 import android.content.Intent;
     22 import android.database.DataSetObserver;
     23 import android.os.Bundle;
     24 import android.os.Parcelable;
     25 import android.view.View;
     26 import android.view.View.OnClickListener;
     27 import android.widget.ListView;
     28 
     29 import com.googlecode.android_scripting.BaseApplication;
     30 import com.googlecode.android_scripting.Constants;
     31 import com.googlecode.android_scripting.FeaturedInterpreters;
     32 import com.googlecode.android_scripting.IntentBuilders;
     33 import com.googlecode.android_scripting.R;
     34 import com.googlecode.android_scripting.ScriptListAdapter;
     35 import com.googlecode.android_scripting.ScriptStorageAdapter;
     36 import com.googlecode.android_scripting.interpreter.InterpreterConfiguration;
     37 import com.googlecode.android_scripting.interpreter.InterpreterConstants;
     38 
     39 import java.io.File;
     40 import java.util.List;
     41 
     42 
     43 /**
     44  * Presents available scripts and returns the selected one.
     45  *
     46  * @author Damon Kohler (damonkohler (at) gmail.com)
     47  */
     48 public class ScriptPicker extends ListActivity {
     49 
     50   private List<File> mScripts;
     51   private ScriptPickerAdapter mAdapter;
     52   private InterpreterConfiguration mConfiguration;
     53   private File mCurrentDir;
     54   private final File mBaseDir = new File(InterpreterConstants.SCRIPTS_ROOT);
     55 
     56   @Override
     57   public void onCreate(Bundle savedInstanceState) {
     58     super.onCreate(savedInstanceState);
     59     CustomizeWindow.requestCustomTitle(this, "Scripts", R.layout.script_manager);
     60     mCurrentDir = mBaseDir;
     61     mConfiguration = ((BaseApplication) getApplication()).getInterpreterConfiguration();
     62     mScripts = ScriptStorageAdapter.listExecutableScripts(null, mConfiguration);
     63     mAdapter = new ScriptPickerAdapter(this);
     64     mAdapter.registerDataSetObserver(new ScriptListObserver());
     65     setListAdapter(mAdapter);
     66   }
     67 
     68   @Override
     69   protected void onListItemClick(ListView list, View view, int position, long id) {
     70     final File script = (File) list.getItemAtPosition(position);
     71 
     72     if (script.isDirectory()) {
     73       mCurrentDir = script;
     74       mAdapter.notifyDataSetInvalidated();
     75       return;
     76     }
     77 
     78     //TODO: Take action here based on item click
     79   }
     80 
     81   private class ScriptListObserver extends DataSetObserver {
     82     @SuppressWarnings("serial")
     83     @Override
     84     public void onInvalidated() {
     85       mScripts = ScriptStorageAdapter.listExecutableScripts(mCurrentDir, mConfiguration);
     86       // TODO(damonkohler): Extending the File class here seems odd.
     87       if (!mCurrentDir.equals(mBaseDir)) {
     88         mScripts.add(0, new File(mCurrentDir.getParent()) {
     89           @Override
     90           public boolean isDirectory() {
     91             return true;
     92           }
     93 
     94           @Override
     95           public String getName() {
     96             return "..";
     97           }
     98         });
     99       }
    100     }
    101   }
    102 
    103   private class ScriptPickerAdapter extends ScriptListAdapter {
    104 
    105     public ScriptPickerAdapter(Context context) {
    106       super(context);
    107     }
    108 
    109     @Override
    110     protected List<File> getScriptList() {
    111       return mScripts;
    112     }
    113 
    114   }
    115 }
    116