1 files changed, 143 insertions, 0 deletions
diff --git a/src/com/android/browser/PermissionsActivity.java b/src/com/android/browser/PermissionsActivity.java
new file mode 100644
index 000000000..68f2b19a2
--- /dev/null
+++ b/src/com/android/browser/PermissionsActivity.java
@@ -0,0 +1,143 @@
+package com.android.browser;
+
+import android.Manifest;
+import android.app.Activity;
+import android.app.Dialog;
+import android.app.AlertDialog;
+import android.app.KeyguardManager;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.SharedPreferences;
+import android.content.SharedPreferences.Editor;
+import android.content.pm.PackageManager;
+import android.preference.PreferenceManager;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.KeyEvent;
+import android.view.Window;
+import android.view.WindowManager;
+import com.android.browser.R;
+
+/**
+ * Activity that shows permissions request dialogs and handles lack of critical permissions.
+ */
+public class PermissionsActivity extends Activity {
+    private static final String TAG = "PermissionsActivity";
+
+    private static String PREF_HAS_SEEN_PERMISSIONS_DIALOGS = "pref_has_seen_permissions_dialogs";
+    private static int PERMISSION_REQUEST_CODE = 1;
+    private static int RESULT_CODE_OK = 1;
+    private static int RESULT_CODE_FAILED = 2;
+
+    private int mIndexPermissionRequestStorage;
+    private boolean mShouldRequestStoragePermission;
+    private int mNumPermissionsToRequest;
+    private boolean mFlagHasStoragePermission;
+    private SharedPreferences mPrefs;
+
+    /**
+     * Close activity when secure app passes lock screen or screen turns
+     * off.
+     */
+    private final BroadcastReceiver mShutdownReceiver = new BroadcastReceiver() {
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            Log.v(TAG, "received intent, finishing: " + intent.getAction());
+            finish();
+        }
+    };
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        mPrefs = PreferenceManager.getDefaultSharedPreferences(this);
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        mNumPermissionsToRequest = 0;
+        checkPermissions();
+    }
+
+    private void checkPermissions() {
+        if (checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE)
+                != PackageManager.PERMISSION_GRANTED) {
+            mNumPermissionsToRequest++;
+            mShouldRequestStoragePermission = true;
+        } else {
+            mFlagHasStoragePermission = true;
+        }
+
+        if (mNumPermissionsToRequest != 0) {
+            if (!mPrefs.getBoolean(PREF_HAS_SEEN_PERMISSIONS_DIALOGS, false)) {
+                buildPermissionsRequest();
+            } else {
+                // Permissions dialog has already been shown
+                // and we're still missing permissions.
+                handlePermissionsFailure();
+            }
+        } else {
+            handlePermissionsSuccess();
+        }
+    }
+
+    private void buildPermissionsRequest() {
+        String[] permissionsToRequest = new String[mNumPermissionsToRequest];
+        int permissionsRequestIndex = 0;
+
+        if (mShouldRequestStoragePermission) {
+            permissionsToRequest[permissionsRequestIndex] = Manifest.permission.READ_EXTERNAL_STORAGE;
+            mIndexPermissionRequestStorage = permissionsRequestIndex;
+            permissionsRequestIndex++;
+        }
+
+        Log.v(TAG, "requestPermissions count: " + permissionsToRequest.length);
+        requestPermissions(permissionsToRequest, PERMISSION_REQUEST_CODE);
+    }
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode, String permissions[],
+            int[] grantResults) {
+        Log.v(TAG, "onPermissionsResult counts: " + permissions.length + ":" + grantResults.length);
+
+        if (mShouldRequestStoragePermission) {
+            if (grantResults.length > 0 && grantResults[mIndexPermissionRequestStorage] ==
+                    PackageManager.PERMISSION_GRANTED) {
+                mFlagHasStoragePermission = true;
+            } else {
+                handlePermissionsFailure();
+            }
+        }
+
+        if (mFlagHasStoragePermission) {
+            handlePermissionsSuccess();
+        }
+    }
+
+    private void handlePermissionsSuccess() {
+        Editor edit = mPrefs.edit();
+        edit.putBoolean(PREF_HAS_SEEN_PERMISSIONS_DIALOGS, true);
+        edit.commit();
+
+        Intent intent = new Intent(this, BrowserActivity.class);
+        startActivity(intent);
+        finish();
+    }
+
+    private void handlePermissionsFailure() {
+        new AlertDialog.Builder(this).setTitle(getResources().getString(R.string.browser_error_title))
+                .setMessage(getResources().getString(R.string.error_permissions))
+                .setPositiveButton(getResources().getString(R.string.dialog_dismiss),
+                        new DialogInterface.OnClickListener() {
+                    @Override
+                    public void onClick(DialogInterface dialog, int which) {
+                        finish();
+                    }
+                })
+                .show();
+    }
+}