[BUG] Fixes various Work Profile Related Issues

[AnkitK-NITB]

Lawnchair Improvements: Work Profile Fixes & Tab Customization

Overview

This PR includes multiple improvements to Lawnchair:

1. Work profile pause/unpause without authentication prompts
2. Work profile state detection bug fix.
3. Work/Personal tab customization features

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Part 1: Fix Work Profile Pause/Unpause Authentication

When using Lawnchair with work profiles (especially Motorola Secure Folder or similar private spaces), attempting to unpause work apps would trigger an authentication prompt requiring the device PIN/password. While the PIN can be skipped, this prompt is annoying and disrupts the user experience.

Additionally, the pause/unpause buttons were not visible due to overly strict permission checks that prevented the WorkModeSwitch from being attached.

Solution

1. Skip Authentication for Work Profile Unpause

• Use the 3-parameter version of requestQuietModeEnabled() with a null Intent (available on Android P+)
• This bypasses the credential challenge when the launcher is set as the default launcher
• Falls back to the standard method for older Android versions or if the null Intent approach fails

2. Filter Private Spaces (Secure Folders)

• Added profile type checking to only process actual work profiles (TYPE_WORK)
• Skips private spaces/secure folders (TYPE_PRIVATE) that require authentication by design
• Prevents unnecessary API calls and errors for profiles that shouldn't be modified

3. Remove Overly Strict Permission Checks

• Removed requirement for FLAG_HAS_SHORTCUT_PERMISSION and FLAG_QUIET_MODE_CHANGE_PERMISSION
• Being the default launcher is sufficient for work profile control via requestQuietModeEnabled()
• The permissions were blocking button visibility even though the underlying API calls would succeed

Changes

• Modified WorkProfileManager.setWorkProfileEnabled() to:

  • Filter profiles using mWorkProfileMatcher to only process work profiles
  • Use requestQuietModeEnabled(!enabled, userProfile, null) to skip authentication
  • Fallback to standard requestQuietModeEnabled(!enabled, userProfile) if needed

• Modified WorkProfileManager.attachWorkModeSwitch() to:

  • Remove permission checks that were preventing button attachment
  • Allow work mode switch to be created for default launchers

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Part 2: Fix Work Profile State Detection Bug

Problem

Sometimes when work profile was paused, the launcher would still show work app icons (grayed out) instead of showing the unpause card with hidden icons.

Root Cause

LoaderTask.loadAllApps() was using cached quiet mode state from mUserManagerState.isUserQuiet(user), but this cache was initialized earlier in queryPinnedShortcutsForUnlockedUsers() and could become stale if the work profile state changed between initialization and app loading.

The updateUserQuietMode() method existed in UserManagerState but was never being called anywhere in the codebase.

Solution

• Modified LoaderTask.loadAllApps() to query UserManager.isQuietModeEnabled(user) directly for real-time state
• Call mUserManagerState.updateUserQuietMode() to keep the cached state synchronized
• This ensures the FLAG_WORK_PROFILE_QUIET_MODE_ENABLED flag is set correctly based on current state

Changes

• Modified LoaderTask.loadAllApps():

  // Before: Used stale cached value
  boolean quietMode = mUserManagerState.isUserQuiet(user);
  
  // After: Query fresh state and update cache
  boolean quietMode = mUserManager.isQuietModeEnabled(user);
  mUserManagerState.updateUserQuietMode(mUserCache, user, quietMode);

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Part 3: Work/Personal Tab Customization Features

New Features

1. Tabs Background Color

• Custom color picker for the selected work/personal tab button
• Located in: Settings → App Drawer → Style → Tabs background color
• Default: System Accent color

2. Tab Container Background Toggle

• ON/OFF switch to control the background protection that appears when scrolling
• Located in: Settings → App Drawer → Style → Separated Tab container background
• When OFF: No background drawn behind tabs when scrolling (completely transparent)
• Default: ON

Changes

• Added workProfileTabBackgroundColor preference in PreferenceManager2.kt
• Added workProfileTabContainerBackground boolean preference in PreferenceManager2.kt
• Modified DrawableTokens.AllAppsTabsBackground to use custom color from preferences
• Modified ActivityAllAppsContainerView.updateHeaderScroll() to respect the toggle preference
• Added UI controls in AppDrawerPreferences.kt
• Added string resources for labels

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Testing

Tested on Motorola device (Android 16) with:

• Regular work profile (UserHandle{10}) - Successfully pauses/unpauses without authentication ✅
• Secure Folder (UserHandle{11}) - Correctly skipped, no errors or prompts ✅
• Pause/unpause buttons now visible and functional ✅
• Work profile state correctly detected on launcher restart ✅
• Tab color customization working ✅
• Tab background toggle working on scroll ✅