introduced a general application to handle certain Intents, only to hand them to other APG Activities after looking at the content of the passed data

AndroidManifest.xml

@@ -96,18 +96,6 @@
             android:label="@string/title_decrypt"
             android:configChanges="keyboardHidden|orientation|keyboard">
 
-            <intent-filter>
-                <action android:name="android.intent.action.VIEW" />
-                <category android:name="android.intent.category.DEFAULT"/>
-                <data android:mimeType="text/*"/>
-            </intent-filter>
-
-            <intent-filter>
-                <action android:name="android.intent.action.SEND" />
-                <category android:name="android.intent.category.DEFAULT"/>
-                <data android:mimeType="text/*"/>
-            </intent-filter>
-
             <intent-filter>
                 <action android:name="org.thialfihar.android.apg.intent.DECRYPT" />
                 <action android:name="org.thialfihar.android.apg.intent.DECRYPT_FILE" />
@@ -118,6 +106,20 @@
 
         </activity>
 
+        <activity
+            android:name=".GeneralActivity"
+            android:label="@string/app_name"
+            android:configChanges="keyboardHidden|orientation|keyboard"
+            android:theme="@android:style/Theme.Dialog">
+
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <action android:name="android.intent.action.SEND" />
+                <category android:name="android.intent.category.DEFAULT"/>
+                <data android:mimeType="*/*"/>
+            </intent-filter>
+        </activity>
+
         <activity
             android:name=".MailListActivity"
             android:label="@string/title_mailInbox"

res/layout/general.xml

@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:orientation="vertical">
+
+    <ListView
+        android:id="@+id/options"
+        android:layout_width="fill_parent"
+        android:layout_height="0dip"
+        android:layout_weight="1"
+        android:padding="5dip"/>
+
+    <LinearLayout
+        android:orientation="horizontal"
+        android:layout_width="fill_parent"
+        android:layout_height="wrap_content"
+        style="@android:style/ButtonBar">
+
+        <Button
+            android:text="dummy"
+            android:layout_width="0dip"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:visibility="invisible"/>
+
+        <Button
+            android:id="@+id/btn_cancel"
+            android:text="@android:string/cancel"
+            android:layout_width="0dip"
+            android:layout_height="fill_parent"
+            android:layout_weight="2"/>
+
+        <Button
+            android:text="dummy"
+            android:layout_width="0dip"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:visibility="invisible"/>
+
+    </LinearLayout>
+
+</LinearLayout>

res/layout/main.xml

@@ -50,14 +50,14 @@
             <Button
                 android:id="@+id/btn_encryptFile"
                 android:text="@string/btn_encryptFile"
-                android:layout_width="wrap_content"
+                android:layout_width="0dip"
                 android:layout_weight="1"
                 android:layout_height="wrap_content"/>
 
             <Button
                 android:id="@+id/btn_decryptFile"
                 android:text="@string/btn_decryptFile"
-                android:layout_width="wrap_content"
+                android:layout_width="0dip"
                 android:layout_weight="1"
                 android:layout_height="wrap_content"/>
 
@@ -71,14 +71,14 @@
             <Button
                 android:id="@+id/btn_encryptMessage"
                 android:text="@string/btn_encryptMessage"
-                android:layout_width="wrap_content"
+                android:layout_width="0dip"
                 android:layout_weight="1"
                 android:layout_height="wrap_content"/>
 
             <Button
                 android:id="@+id/btn_decryptMessage"
                 android:text="@string/btn_decryptMessage"
-                android:layout_width="wrap_content"
+                android:layout_width="0dip"
                 android:layout_weight="1"
                 android:layout_height="wrap_content"/>
 

res/values/strings.xml

@@ -243,5 +243,12 @@
     <string name="permission_read_key_details_label">Read key details from APG.</string>
     <string name="permission_read_key_details_description">Read of public and secret keys stored in APG, such as key ID and user IDs. The keys themselves can NOT be read.</string>
 
+    <!-- action strings -->
+    <string name="action_encrypt">Encrypt</string>
+    <string name="action_decrypt">Decrypt</string>
+    <string name="action_import_public">Import Public Keys</string>
+    <string name="action_import_secret">Import Secret Keys</string>
+
+
 </resources>
 

src/org/thialfihar/android/apg/GeneralActivity.java

@@ -0,0 +1,141 @@
+package org.thialfihar.android.apg;
+
+import java.io.ByteArrayInputStream;
+import java.io.FileNotFoundException;
+import java.io.InputStream;
+import java.util.Vector;
+
+import org.thialfihar.android.apg.utils.Choice;
+
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
+import android.widget.ListView;
+import android.widget.Toast;
+import android.widget.AdapterView.OnItemClickListener;
+
+public class GeneralActivity extends BaseActivity {
+    private Intent mIntent;
+    private ArrayAdapter<Choice> mAdapter;
+    private ListView mList;
+    private Button mCancelButton;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.general);
+
+        mIntent = getIntent();
+
+        boolean isEncrypted = false;
+        boolean containsKeys = false;
+
+        InputStream inStream = null;
+        {
+            byte[] data = mIntent.getByteArrayExtra(Intent.EXTRA_TEXT);
+            if (data != null) {
+                inStream = new ByteArrayInputStream(data);
+            }
+        }
+
+        if (inStream == null) {
+            Uri data = mIntent.getData();
+            if (data != null) {
+                try {
+                    inStream = getContentResolver().openInputStream(data);
+                } catch (FileNotFoundException e) {
+                    // didn't work
+                    Toast.makeText(this, "failed to open stream", Toast.LENGTH_SHORT);
+                }
+            }
+        }
+
+        if (inStream == null) {
+            Toast.makeText(this, "no data found", Toast.LENGTH_SHORT);
+            finish();
+            return;
+        }
+
+        mList = (ListView) findViewById(R.id.options);
+        Vector<Choice> choices = new Vector<Choice>();
+
+        if (containsKeys) {
+            choices.add(new Choice(Id.choice.action.import_public, getString(R.string.action_import_public)));
+            choices.add(new Choice(Id.choice.action.import_secret, getString(R.string.action_import_secret)));
+        }
+
+        if (isEncrypted) {
+            choices.add(new Choice(Id.choice.action.decrypt, getString(R.string.action_decrypt)));
+        }
+
+        if (!containsKeys && !isEncrypted) {
+            choices.add(new Choice(Id.choice.action.encrypt, getString(R.string.action_encrypt)));
+        }
+
+        mAdapter = new ArrayAdapter<Choice>(this, android.R.layout.simple_list_item_1, choices);
+        mList.setAdapter(mAdapter);
+
+        mList.setOnItemClickListener(new OnItemClickListener() {
+            @Override
+            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
+                clicked(mAdapter.getItem(arg2).getId());
+            }
+        });
+
+        mCancelButton = (Button) findViewById(R.id.btn_cancel);
+        mCancelButton.setOnClickListener(new OnClickListener() {
+
+            @Override
+            public void onClick(View v) {
+                GeneralActivity.this.finish();
+            }
+        });
+
+        if (choices.size() == 1) {
+            clicked(choices.get(0).getId());
+        }
+    }
+
+    private void clicked(int id) {
+        Intent intent = new Intent();
+        switch (id) {
+            case Id.choice.action.encrypt: {
+                intent.setClass(this, EncryptActivity.class);
+                if (mIntent.hasExtra(Intent.EXTRA_TEXT)) {
+                    intent.putExtra(Intent.EXTRA_TEXT, mIntent.getByteArrayExtra(Intent.EXTRA_TEXT));
+                } else if (mIntent.getData() != null) {
+                    intent.setData(mIntent.getData());
+                    intent.setType(mIntent.getType());
+                }
+
+                break;
+            }
+
+            case Id.choice.action.decrypt: {
+                break;
+            }
+
+            case Id.choice.action.import_public: {
+                break;
+            }
+
+            case Id.choice.action.import_secret: {
+                break;
+            }
+
+            default: {
+                // shouldn't happen
+                return;
+            }
+        }
+
+        startActivity(intent);
+        finish();
+    }
+}

src/org/thialfihar/android/apg/Id.java

@@ -111,6 +111,13 @@ public final class Id {
             public static final int encrypt_only = 0x21070002;
             public static final int sign_and_encrypt = 0x21070003;
         }
+
+        public static final class action {
+            public static final int encrypt = 0x21070001;
+            public static final int decrypt = 0x21070002;
+            public static final int import_public = 0x21070003;
+            public static final int import_secret = 0x21070004;
+        }
     }
 
     public static final class return_value {