Introduce LocalTerminalPreferenceController

 - Create new LocalTerminalPreferenceController
 - Create controller inside the DashboardFragment
 - Port logic from DevelopmentSettings into the controller

Bug: 34203528
Test: make RunSettingsRoboTests -j40
Change-Id: Ib4a375181af9367a4aef74fd9889de2de1c8652d

1 files changed, 100 insertions, 0 deletions

diff --git a/src/com/android/settings/development/LocalTerminalPreferenceController.java b/src/com/android/settings/development/LocalTerminalPreferenceController.java
new file mode 100644
index 0000000000..cda6e27d22
--- /dev/null
+++ b/src/com/android/settings/development/LocalTerminalPreferenceController.java
@@ -0,0 +1,100 @@
+package com.android.settings.development;
+
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.os.UserManager;
+import android.support.annotation.VisibleForTesting;
+import android.support.v14.preference.SwitchPreference;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+
+import com.android.settingslib.wrapper.PackageManagerWrapper;
+
+public class LocalTerminalPreferenceController extends
+        DeveloperOptionsPreferenceController implements Preference.OnPreferenceChangeListener {
+
+    private static final String ENABLE_TERMINAL_KEY = "enable_terminal";
+
+    @VisibleForTesting
+    static final String TERMINAL_APP_PACKAGE = "com.android.terminal";
+
+    private PackageManagerWrapper mPackageManager;
+    private SwitchPreference mPreference;
+    private UserManager mUserManager;
+
+    public LocalTerminalPreferenceController(Context context) {
+        super(context);
+
+        mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return isPackageInstalled(TERMINAL_APP_PACKAGE);
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return ENABLE_TERMINAL_KEY;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+
+        mPreference = (SwitchPreference) screen.findPreference(getPreferenceKey());
+        mPackageManager = getPackageManagerWrapper();
+
+        if (isAvailable() && !isEnabled()) {
+            mPreference.setEnabled(false);
+        }
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        final boolean terminalEnabled = (Boolean) newValue;
+        mPackageManager.setApplicationEnabledSetting(TERMINAL_APP_PACKAGE,
+                terminalEnabled ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED
+                        : PackageManager.COMPONENT_ENABLED_STATE_DEFAULT, 0 /* flags */);
+        return true;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        final boolean isTerminalEnabled = mPackageManager.getApplicationEnabledSetting(
+                TERMINAL_APP_PACKAGE) == PackageManager.COMPONENT_ENABLED_STATE_ENABLED;
+        mPreference.setChecked(isTerminalEnabled);
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchEnabled() {
+        if (isEnabled()) {
+            mPreference.setEnabled(true);
+        }
+    }
+
+    @Override
+    protected void onDeveloperOptionsSwitchDisabled() {
+        mPackageManager.setApplicationEnabledSetting(TERMINAL_APP_PACKAGE,
+                PackageManager.COMPONENT_ENABLED_STATE_DEFAULT, 0 /* flags */);
+        mPreference.setEnabled(false);
+        mPreference.setChecked(false);
+    }
+
+    @VisibleForTesting
+    PackageManagerWrapper getPackageManagerWrapper() {
+        return new PackageManagerWrapper(mContext.getPackageManager());
+    }
+
+    private boolean isPackageInstalled(String packageName) {
+        try {
+            return mContext.getPackageManager().getPackageInfo(packageName, 0 /* flags */) != null;
+        } catch (PackageManager.NameNotFoundException e) {
+            return false;
+        }
+    }
+
+    private boolean isEnabled() {
+        return mUserManager.isAdminUser();
+    }
+}