1 files changed, 179 insertions, 0 deletions
diff --git a/android/src/com/artifex/mupdfdemo/ChoosePDFActivity.java b/android/src/com/artifex/mupdfdemo/ChoosePDFActivity.java
new file mode 100644
index 00000000..57e9893b
--- /dev/null
+++ b/android/src/com/artifex/mupdfdemo/ChoosePDFActivity.java
@@ -0,0 +1,179 @@
+package com.artifex.mupdfdemo;
+
+import java.io.File;
+import java.io.FileFilter;
+import java.util.Arrays;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.Map;
+
+import android.app.AlertDialog;
+import android.app.ListActivity;
+import android.content.DialogInterface;
+import android.content.DialogInterface.OnClickListener;
+import android.content.Intent;
+import android.content.res.Resources;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.Environment;
+import android.os.FileObserver;
+import android.os.Handler;
+import android.view.View;
+import android.widget.ListView;
+
+public class ChoosePDFActivity extends ListActivity {
+	static private File  mDirectory;
+	static private Map<String, Integer> mPositions = new HashMap<String, Integer>();
+	private File         mParent;
+	private File []      mDirs;
+	private File []      mFiles;
+	private Handler	     mHandler;
+	private Runnable     mUpdateFiles;
+	private ChoosePDFAdapter adapter;
+
+	@Override
+	protected void onCreate(Bundle savedInstanceState) {
+		super.onCreate(savedInstanceState);
+
+		Resources res = getResources();
+		String appName = res.getString(R.string.app_name);
+		String version = res.getString(R.string.version);
+		String title = res.getString(R.string.picker_title);
+		setTitle(String.format(title, appName, version));
+
+		String storageState = Environment.getExternalStorageState();
+
+		if (!Environment.MEDIA_MOUNTED.equals(storageState)
+				&& !Environment.MEDIA_MOUNTED_READ_ONLY.equals(storageState))
+		{
+			AlertDialog.Builder builder = new AlertDialog.Builder(this);
+			builder.setTitle(R.string.no_media_warning);
+			builder.setMessage(R.string.no_media_hint);
+			AlertDialog alert = builder.create();
+			alert.setButton(AlertDialog.BUTTON_POSITIVE,"Dismiss",
+					new OnClickListener() {
+						public void onClick(DialogInterface dialog, int which) {
+							finish();
+						}
+					});
+			alert.show();
+			return;
+		}
+
+		if (mDirectory == null)
+			mDirectory = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
+
+		// Create a list adapter...
+		adapter = new ChoosePDFAdapter(getLayoutInflater());
+		setListAdapter(adapter);
+
+		// ...that is updated dynamically when files are scanned
+		mHandler = new Handler();
+		mUpdateFiles = new Runnable() {
+			public void run() {
+				mParent = mDirectory.getParentFile();
+
+				mDirs = mDirectory.listFiles(new FileFilter() {
+
+					public boolean accept(File file) {
+						return file.isDirectory();
+					}
+				});
+				if (mDirs == null)
+					mDirs = new File[0];
+
+				mFiles = mDirectory.listFiles(new FileFilter() {
+
+					public boolean accept(File file) {
+						if (file.isDirectory())
+							return false;
+						String fname = file.getName().toLowerCase();
+						if (fname.endsWith(".pdf"))
+							return true;
+						if (fname.endsWith(".xps"))
+							return true;
+						if (fname.endsWith(".cbz"))
+							return true;
+						return false;
+					}
+				});
+				if (mFiles == null)
+					mFiles = new File[0];
+
+				Arrays.sort(mFiles, new Comparator<File>() {
+					public int compare(File arg0, File arg1) {
+						return arg0.getName().compareToIgnoreCase(arg1.getName());
+					}
+				});
+
+				Arrays.sort(mDirs, new Comparator<File>() {
+					public int compare(File arg0, File arg1) {
+						return arg0.getName().compareToIgnoreCase(arg1.getName());
+					}
+				});
+
+				adapter.clear();
+				if (mParent != null)
+					adapter.add(new ChoosePDFItem(ChoosePDFItem.Type.PARENT, ".."));
+				for (File f : mDirs)
+					adapter.add(new ChoosePDFItem(ChoosePDFItem.Type.DIR, f.getName()));
+				for (File f : mFiles)
+					adapter.add(new ChoosePDFItem(ChoosePDFItem.Type.DOC, f.getName()));
+
+				lastPosition();
+			}
+		};
+
+		// Start initial file scan...
+		mHandler.post(mUpdateFiles);
+
+		// ...and observe the directory and scan files upon changes.
+		FileObserver observer = new FileObserver(mDirectory.getPath(), FileObserver.CREATE | FileObserver.DELETE) {
+			public void onEvent(int event, String path) {
+				mHandler.post(mUpdateFiles);
+			}
+		};
+		observer.startWatching();
+	}
+
+	private void lastPosition() {
+		String p = mDirectory.getAbsolutePath();
+		if (mPositions.containsKey(p))
+			getListView().setSelection(mPositions.get(p));
+	}
+
+	@Override
+	protected void onListItemClick(ListView l, View v, int position, long id) {
+		super.onListItemClick(l, v, position, id);
+
+		mPositions.put(mDirectory.getAbsolutePath(), getListView().getFirstVisiblePosition());
+
+		if (position < (mParent == null ? 0 : 1)) {
+			mDirectory = mParent;
+			mHandler.post(mUpdateFiles);
+			return;
+		}
+
+		position -= (mParent == null ? 0 : 1);
+
+		if (position < mDirs.length) {
+			mDirectory = mDirs[position];
+			mHandler.post(mUpdateFiles);
+			return;
+		}
+
+		position -= mDirs.length;
+
+		Uri uri = Uri.parse(mFiles[position].getAbsolutePath());
+		Intent intent = new Intent(this,MuPDFActivity.class);
+		intent.setAction(Intent.ACTION_VIEW);
+		intent.setData(uri);
+		startActivity(intent);
+	}
+
+	@Override
+	protected void onPause() {
+		super.onPause();
+		mPositions.put(mDirectory.getAbsolutePath(), getListView().getFirstVisiblePosition());
+	}
+}