initial commit

app/src/main/java/com/stardust/scriptdroid/ShortcutActivity.java

@@ -0,0 +1,89 @@
+package com.stardust.scriptdroid;
+
+import android.app.Activity;
+import android.os.Build;
+import android.os.Bundle;
+import android.text.TextUtils;
+import android.widget.Toast;
+
+import com.stardust.scriptdroid.droid.Droid;
+
+import java.io.File;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.function.BooleanSupplier;
+
+import static android.Manifest.permission.READ_EXTERNAL_STORAGE;
+import static android.content.pm.PackageManager.PERMISSION_GRANTED;
+
+/**
+ * Created by Stardust on 2017/1/23.
+ */
+public class ShortcutActivity extends Activity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        final String path = getIntent().getStringExtra("path");
+        if (!ensure(() -> !TextUtils.isEmpty(path), R.string.text_path_is_empty))
+            return;
+        final File scriptFile = new File(path);
+        new Domino()
+                .then(() -> ensure(scriptFile::exists, R.string.text_file_not_exists))
+                .then(() -> ensure(this::hasStorageReadPermission, R.string.text_no_file_rw_permission))
+                .then(() -> {
+                    runScriptFile(path);
+                    return true;
+                })
+                .fall();
+    }
+
+    private void runScriptFile(String path) {
+        try {
+            Droid.run(this, new File(path));
+        } catch (Exception e) {
+            e.printStackTrace();
+            Toast.makeText(this, e.getMessage(), Toast.LENGTH_SHORT).show();
+        }
+    }
+
+    private boolean ensure(BooleanSupplier bool, String message) {
+        boolean b = bool.getAsBoolean();
+        if (!b) {
+            Toast.makeText(this, message, Toast.LENGTH_SHORT).show();
+        }
+        return b;
+    }
+
+    private boolean ensure(BooleanSupplier bool, int resId) {
+        return ensure(bool, getString(resId));
+    }
+
+    private boolean hasStorageReadPermission() {
+        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.M &&
+                checkSelfPermission(READ_EXTERNAL_STORAGE) == PERMISSION_GRANTED;
+    }
+
+    @FunctionalInterface
+    interface Tile {
+        boolean fall();
+    }
+
+    public static class Domino {
+
+        private List<Tile> mTiles = new LinkedList<>();
+
+        Domino then(Tile next) {
+            mTiles.add(next);
+            return this;
+        }
+
+        void fall() {
+            for (Tile tile : mTiles) {
+                if (!tile.fall())
+                    break;
+            }
+        }
+    }
+
+}