Add padlock to usb modes when disabled by admin.

Change-Id: I8504febd78f083eb3ff88926fe29d69edc62b6ef

src/com/android/settings/deviceinfo/UsbBackend.java

@@ -134,13 +134,16 @@ public class UsbBackend {
                     ? UsbPort.POWER_ROLE_SOURCE : UsbPort.POWER_ROLE_SINK;
     }
 
-    public boolean isModeSupported(int mode) {
+    public boolean isModeDisallowedByAdmin(int mode) {
         if (mRestricted && (mode & MODE_DATA_MASK) != MODE_DATA_NONE
                 && (mode & MODE_DATA_MASK) != MODE_DATA_MIDI) {
             // No USB data modes are supported.
-            return false;
+            return true;
         }
+        return false;
+    }
 
+    public boolean isModeSupported(int mode) {
         if (!mMidi && (mode & MODE_DATA_MASK) == MODE_DATA_MIDI) {
             return false;
         }

src/com/android/settings/deviceinfo/UsbModeChooserActivity.java

@@ -25,8 +25,12 @@ import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.graphics.drawable.Drawable;
+import android.graphics.PorterDuff;
 import android.hardware.usb.UsbManager;
 import android.os.Bundle;
+import android.os.UserHandle;
+import android.os.UserManager;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.View.OnClickListener;
@@ -35,6 +39,9 @@ import android.widget.LinearLayout;
 import android.widget.TextView;
 
 import com.android.settings.R;
+import com.android.settingslib.RestrictedLockUtils;
+
+import static com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
 
 /**
  * UI for the USB chooser dialog.
@@ -53,6 +60,7 @@ public class UsbModeChooserActivity extends Activity {
     private UsbBackend mBackend;
     private AlertDialog mDialog;
     private LayoutInflater mLayoutInflater;
+    private EnforcedAdmin mEnforcedAdmin;
 
     private BroadcastReceiver mDisconnectedReceiver = new BroadcastReceiver() {
         @Override
@@ -93,11 +101,14 @@ public class UsbModeChooserActivity extends Activity {
 
         LinearLayout container = (LinearLayout) mDialog.findViewById(R.id.container);
 
+        mEnforcedAdmin = RestrictedLockUtils.checkIfRestrictionEnforced(this,
+                UserManager.DISALLOW_USB_FILE_TRANSFER, UserHandle.myUserId());
         mBackend = new UsbBackend(this);
         int current = mBackend.getCurrentMode();
         for (int i = 0; i < DEFAULT_MODES.length; i++) {
             if (mBackend.isModeSupported(DEFAULT_MODES[i])) {
-                inflateOption(DEFAULT_MODES[i], current == DEFAULT_MODES[i], container);
+                inflateOption(DEFAULT_MODES[i], current == DEFAULT_MODES[i], container,
+                        mBackend.isModeDisallowedByAdmin(DEFAULT_MODES[i]));
             }
         }
     }
@@ -116,15 +127,31 @@ public class UsbModeChooserActivity extends Activity {
         super.onStop();
     }
 
-    private void inflateOption(final int mode, boolean selected, LinearLayout container) {
+    private void inflateOption(final int mode, boolean selected, LinearLayout container,
+            final boolean disallowedByAdmin) {
         View v = mLayoutInflater.inflate(R.layout.radio_with_summary, container, false);
 
-        ((TextView) v.findViewById(android.R.id.title)).setText(getTitle(mode));
+        TextView titleView = (TextView) v.findViewById(android.R.id.title);
-        ((TextView) v.findViewById(android.R.id.summary)).setText(getSummary(mode));
+        titleView.setText(getTitle(mode));
+        TextView summaryView = (TextView) v.findViewById(android.R.id.summary);
+        summaryView.setText(getSummary(mode));
+
+        if (disallowedByAdmin) {
+            if (mEnforcedAdmin != null) {
+                setDisabledByAdmin(titleView, summaryView);
+            } else {
+                return;
+            }
+        }
 
         v.setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {
+                if (disallowedByAdmin && mEnforcedAdmin != null) {
+                    RestrictedLockUtils.sendShowAdminSupportDetailsIntent(
+                            UsbModeChooserActivity.this, mEnforcedAdmin);
+                    return;
+                }
                 if (!ActivityManager.isUserAMonkey()) {
                     mBackend.setMode(mode);
                 }
@@ -136,6 +163,18 @@ public class UsbModeChooserActivity extends Activity {
         container.addView(v);
     }
 
+    private void setDisabledByAdmin(TextView titleView, TextView summaryView) {
+        if (mEnforcedAdmin != null) {
+            titleView.setEnabled(false);
+            summaryView.setEnabled(false);
+            RestrictedLockUtils.setTextViewPadlock(this,
+                    titleView, true /* showPadlock */);
+            Drawable[] compoundDrawables = titleView.getCompoundDrawablesRelative();
+            compoundDrawables[0 /* start */].mutate().setColorFilter(
+                    getColor(R.color.disabled_text_color), PorterDuff.Mode.MULTIPLY);
+        }
+    }
+
     private static int getSummary(int mode) {
         switch (mode) {
             case UsbBackend.MODE_POWER_SINK | UsbBackend.MODE_DATA_NONE: