From 18f5e8a8493f0f09ce955f8190fc3bcd8ca9a39c Mon Sep 17 00:00:00 2001
From: Adrian Ulrich <adrian@blinkenlights.ch>
Date: Sun, 4 Oct 2015 16:32:30 +0200
Subject: [PATCH] Dispatch text and image files to external viewers

---
 .../android/vanilla/FileSystemAdapter.java    | 28 +++++++++++++++++--
 1 file changed, 25 insertions(+), 3 deletions(-)

diff --git a/src/ch/blinkenlights/android/vanilla/FileSystemAdapter.java b/src/ch/blinkenlights/android/vanilla/FileSystemAdapter.java
index d9f2d059..030a92c2 100644
--- a/src/ch/blinkenlights/android/vanilla/FileSystemAdapter.java
+++ b/src/ch/blinkenlights/android/vanilla/FileSystemAdapter.java
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2010, 2011 Christopher Eby <kreed@kreed.org>
+ * Copyright (C) 2015 Adrian Ulrich <adrian@blinkenlights.ch>
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -25,6 +26,7 @@ package ch.blinkenlights.android.vanilla;
 import android.content.Context;
 import android.content.Intent;
 import android.graphics.drawable.Drawable;
+import android.net.Uri;
 import android.os.Environment;
 import android.os.FileObserver;
 import android.util.Log;
@@ -37,6 +39,7 @@ import android.widget.TextView;
 import java.io.File;
 import java.io.FilenameFilter;
 import java.io.IOException;
+import java.net.URLConnection;
 import java.util.Arrays;
 import java.util.Comparator;
 import java.util.regex.Pattern;
@@ -308,10 +311,29 @@ public class FileSystemAdapter
 	}
 
 	@Override
-	public void onClick(View view)
-	{
-		Intent intent = createData((View)view.getParent());
+	public void onClick(View view) {
+		Intent intent    = createData((View)view.getParent());
+		String path      = intent.getStringExtra(LibraryAdapter.DATA_FILE);
+		String mimeGuess = URLConnection.guessContentTypeFromName(path);
 		boolean isFolder = intent.getBooleanExtra(LibraryAdapter.DATA_EXPANDABLE, false);
+
+		if (isFolder == false && mimeGuess != null && mimeGuess.matches("^(image|text)/.+")) { // Dispatch images and text to external apps
+			boolean fallthrough = false;
+			File file = new File(path);
+			Uri uri = Uri.fromFile(file);
+
+			Intent extView = new Intent(Intent.ACTION_VIEW);
+			extView.setDataAndType(uri, mimeGuess);
+			try {
+				mActivity.startActivity(extView);
+			} catch (Exception ActivityNotFoundException) {
+				fallthrough = true;
+			}
+
+			if (fallthrough == false) // activity was started
+				return;
+		}
+
 		if (isFolder) {
 			mActivity.onItemExpanded(intent);
 		} else {