Lazy mode in ViewSubredditDetailActivity.

3 files changed, 45 insertions, 4 deletions

diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/ViewSubredditDetailActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/ViewSubredditDetailActivity.java
index e10f96cd..37171a8a 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/ViewSubredditDetailActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/ViewSubredditDetailActivity.java
@@ -20,6 +20,8 @@ import androidx.lifecycle.ViewModelProviders;
 import com.bumptech.glide.Glide;
 import com.bumptech.glide.RequestManager;
 import com.bumptech.glide.request.RequestOptions;
+import com.google.android.material.appbar.AppBarLayout;
+import com.google.android.material.appbar.CollapsingToolbarLayout;
 import com.google.android.material.chip.Chip;
 import com.google.android.material.snackbar.Snackbar;
 
@@ -43,8 +45,11 @@ public class ViewSubredditDetailActivity extends AppCompatActivity {
     static final String EXTRA_SUBREDDIT_NAME_KEY = "ESN";
 
     private static final String FRAGMENT_OUT_STATE_KEY = "FOSK";
+    private static final String IS_IN_LAZY_MODE_STATE = "IILMS";
 
     @BindView(R.id.coordinator_layout_view_subreddit_detail_activity) CoordinatorLayout coordinatorLayout;
+    @BindView(R.id.appbar_layout_view_subreddit_detail) AppBarLayout appBarLayout;
+    @BindView(R.id.collapsing_toolbar_layout_view_subreddit_detail_activity) CollapsingToolbarLayout collapsingToolbarLayout;
     @BindView(R.id.banner_image_view_view_subreddit_detail_activity) GifImageView bannerImageView;
     @BindView(R.id.icon_gif_image_view_view_subreddit_detail_activity) GifImageView iconGifImageView;
     @BindView(R.id.subscribe_subreddit_chip_view_subreddit_detail_activity) Chip subscribeSubredditChip;
@@ -54,9 +59,12 @@ public class ViewSubredditDetailActivity extends AppCompatActivity {
     @BindView(R.id.description_text_view_view_subreddit_detail_activity) TextView descriptionTextView;
 
     private boolean subscriptionReady = false;
+    private boolean isInLazyMode = false;
 
     private RequestManager glide;
     private Fragment mFragment;
+    private Menu mMenu;
+    private AppBarLayout.LayoutParams params;
 
     private SubscribedSubredditDao subscribedSubredditDao;
     private SubredditViewModel mSubredditViewModel;
@@ -81,6 +89,8 @@ public class ViewSubredditDetailActivity extends AppCompatActivity {
 
         ((Infinity) getApplication()).getmAppComponent().inject(this);
 
+        params = (AppBarLayout.LayoutParams) collapsingToolbarLayout.getLayoutParams();
+
         //Get status bar height
         int statusBarHeight = 0;
         int resourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
@@ -245,6 +255,7 @@ public class ViewSubredditDetailActivity extends AppCompatActivity {
                 bundle.putInt(PostFragment.POST_TYPE_KEY, PostDataSource.TYPE_SUBREDDIT);
                 mFragment.setArguments(bundle);
             }
+            isInLazyMode = savedInstanceState.getBoolean(IS_IN_LAZY_MODE_STATE);
             getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout_view_subreddit_detail_activity, mFragment).commit();
         }
     }
@@ -252,6 +263,18 @@ public class ViewSubredditDetailActivity extends AppCompatActivity {
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         getMenuInflater().inflate(R.menu.view_subreddit_detail_activity, menu);
+        mMenu = menu;
+        MenuItem lazyModeItem = mMenu.findItem(R.id.action_lazy_mode_view_subreddit_detail_activity);
+        if(isInLazyMode) {
+            lazyModeItem.setTitle(R.string.action_stop_lazy_mode);
+            params.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_EXIT_UNTIL_COLLAPSED);
+            collapsingToolbarLayout.setLayoutParams(params);
+        } else {
+            lazyModeItem.setTitle(R.string.action_start_lazy_mode);
+            params.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS |
+                    AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS_COLLAPSED);
+            collapsingToolbarLayout.setLayoutParams(params);
+        }
         return true;
     }
 
@@ -265,6 +288,24 @@ public class ViewSubredditDetailActivity extends AppCompatActivity {
                 if(mFragment instanceof FragmentCommunicator) {
                     ((FragmentCommunicator) mFragment).refresh();
                 }
+                break;
+            case R.id.action_lazy_mode_view_subreddit_detail_activity:
+                MenuItem lazyModeItem = mMenu.findItem(R.id.action_lazy_mode_view_subreddit_detail_activity);
+                if(isInLazyMode) {
+                    isInLazyMode = false;
+                    ((FragmentCommunicator) mFragment).stopLazyMode();
+                    lazyModeItem.setTitle(R.string.action_start_lazy_mode);
+                    params.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS |
+                            AppBarLayout.LayoutParams.SCROLL_FLAG_ENTER_ALWAYS_COLLAPSED);
+                    collapsingToolbarLayout.setLayoutParams(params);
+                } else {
+                    isInLazyMode = true;
+                    ((FragmentCommunicator) mFragment).startLazyMode();
+                    lazyModeItem.setTitle(R.string.action_stop_lazy_mode);
+                    appBarLayout.setExpanded(false);
+                    params.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_EXIT_UNTIL_COLLAPSED);
+                    collapsingToolbarLayout.setLayoutParams(params);
+                }
         }
         return false;
     }
@@ -272,6 +313,7 @@ public class ViewSubredditDetailActivity extends AppCompatActivity {
     @Override
     protected void onSaveInstanceState(@NonNull Bundle outState) {
         super.onSaveInstanceState(outState);
+        outState.putBoolean(IS_IN_LAZY_MODE_STATE, isInLazyMode);
         getSupportFragmentManager().putFragment(outState, FRAGMENT_OUT_STATE_KEY, mFragment);
     }
 
diff --git a/app/src/main/java/ml/docilealligator/infinityforreddit/ViewUserDetailActivity.java b/app/src/main/java/ml/docilealligator/infinityforreddit/ViewUserDetailActivity.java
index 905144f8..787b2e0e 100644
--- a/app/src/main/java/ml/docilealligator/infinityforreddit/ViewUserDetailActivity.java
+++ b/app/src/main/java/ml/docilealligator/infinityforreddit/ViewUserDetailActivity.java
@@ -104,10 +104,6 @@ public class ViewUserDetailActivity extends AppCompatActivity {
         toolbar.setTitle(title);
         setSupportActionBar(toolbar);
 
-        if(savedInstanceState != null) {
-            isInLazyMode = savedInstanceState.getBoolean(IS_IN_LAZY_MODE_STATE);
-        }
-
         ViewGroup.MarginLayoutParams params = (ViewGroup.MarginLayoutParams) toolbar.getLayoutParams();
         params.topMargin = statusBarHeight;
 
@@ -253,6 +249,7 @@ public class ViewUserDetailActivity extends AppCompatActivity {
                 bundle.putInt(PostFragment.POST_TYPE_KEY, PostDataSource.TYPE_USER);
                 mFragment.setArguments(bundle);
             }
+            isInLazyMode = savedInstanceState.getBoolean(IS_IN_LAZY_MODE_STATE);
             getSupportFragmentManager().beginTransaction().replace(R.id.frame_layout_view_user_detail_activity, mFragment).commit();
         }
     }
diff --git a/app/src/main/res/layout/activity_view_subreddit_detail.xml b/app/src/main/res/layout/activity_view_subreddit_detail.xml
index 24bff22c..d7ef40a3 100644
--- a/app/src/main/res/layout/activity_view_subreddit_detail.xml
+++ b/app/src/main/res/layout/activity_view_subreddit_detail.xml
@@ -8,11 +8,13 @@
     tools:context=".ViewSubredditDetailActivity">
 
     <com.google.android.material.appbar.AppBarLayout
+        android:id="@+id/appbar_layout_view_subreddit_detail"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:theme="@style/AppTheme.AppBarOverlay">
 
         <com.google.android.material.appbar.CollapsingToolbarLayout
+            android:id="@+id/collapsing_toolbar_layout_view_subreddit_detail_activity"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
             app:titleEnabled="false"