Add swipe refresh layout

Clover/app/src/main/java/org/floens/chan/ui/controller/ThreadController.java

@@ -18,6 +18,7 @@
 package org.floens.chan.ui.controller;
 
 import android.content.Context;
+import android.support.v4.widget.SwipeRefreshLayout;
 
 import org.floens.chan.Chan;
 import org.floens.chan.controller.Controller;
@@ -30,8 +31,9 @@ import java.util.List;
 
 import de.greenrobot.event.EventBus;
 
-public abstract class ThreadController extends Controller implements ThreadLayout.ThreadLayoutCallback, ImageViewerController.PreviewCallback, RootNavigationController.DrawerCallbacks {
+public abstract class ThreadController extends Controller implements ThreadLayout.ThreadLayoutCallback, ImageViewerController.PreviewCallback, RootNavigationController.DrawerCallbacks, SwipeRefreshLayout.OnRefreshListener {
     protected ThreadLayout threadLayout;
+    private SwipeRefreshLayout swipeRefreshLayout;
 
     public ThreadController(Context context) {
         super(context);
@@ -45,7 +47,17 @@ public abstract class ThreadController extends Controller implements ThreadLayou
 
         threadLayout = new ThreadLayout(context);
         threadLayout.setCallback(this);
-        view = threadLayout;
+        swipeRefreshLayout = new SwipeRefreshLayout(context) {
+            @Override
+            public boolean canChildScrollUp() {
+                return threadLayout.canChildScrollUp();
+            }
+        };
+        swipeRefreshLayout.addView(threadLayout);
+
+        swipeRefreshLayout.setOnRefreshListener(this);
+
+        view = swipeRefreshLayout;
     }
 
     @Override
@@ -73,6 +85,11 @@ public abstract class ThreadController extends Controller implements ThreadLayou
         threadLayout.getPresenter().onForegroundChanged(message.inForeground);
     }
 
+    @Override
+    public void onRefresh() {
+        threadLayout.refreshFromSwipe();
+    }
+
     public void openPost(boolean open) {
         threadLayout.openPost(open);
     }
@@ -114,6 +131,7 @@ public abstract class ThreadController extends Controller implements ThreadLayou
 
     @Override
     public void onShowPosts() {
+        swipeRefreshLayout.setRefreshing(false);
     }
 
     @Override

Clover/app/src/main/java/org/floens/chan/ui/layout/ThreadLayout.java

@@ -66,21 +66,21 @@ public class ThreadLayout extends LoadView implements ThreadPresenter.ThreadPres
     private enum Visible {
         LOADING,
         THREAD,
-        ERROR
+        ERROR;
     }
-
     private ThreadLayoutCallback callback;
 
     private ThreadPresenter presenter;
-    private ThreadListLayout threadListLayout;
 
+    private ThreadListLayout threadListLayout;
     private LinearLayout errorLayout;
+
     private TextView errorText;
     private Button errorRetryButton;
     private PostPopupHelper postPopupHelper;
     private Visible visible;
     private ProgressDialog deletingDialog;
-
+    private boolean refreshedFromSwipe;
     public ThreadLayout(Context context) {
         super(context);
         init();
@@ -121,6 +121,14 @@ public class ThreadLayout extends LoadView implements ThreadPresenter.ThreadPres
         }
     }
 
+    public boolean canChildScrollUp() {
+        if (visible == Visible.THREAD) {
+            return threadListLayout.canChildScrollUp();
+        } else {
+            return true;
+        }
+    }
+
     public boolean onBack() {
         return threadListLayout.onBack();
     }
@@ -137,6 +145,11 @@ public class ThreadLayout extends LoadView implements ThreadPresenter.ThreadPres
         threadListLayout.openReply(open);
     }
 
+    public void refreshFromSwipe() {
+        refreshedFromSwipe = true;
+        presenter.requestData();
+    }
+
     @Override
     public void showPosts(ChanThread thread) {
         threadListLayout.showPosts(thread, visible != Visible.THREAD);
@@ -341,7 +354,12 @@ public class ThreadLayout extends LoadView implements ThreadPresenter.ThreadPres
             this.visible = visible;
             switch (visible) {
                 case LOADING:
-                    setView(null);
+                    View view = setView(null);
+                    // TODO: cleanup
+                    if (refreshedFromSwipe) {
+                        refreshedFromSwipe = false;
+                        view.setVisibility(View.GONE);
+                    }
                     break;
                 case THREAD:
                     setView(threadListLayout);

Clover/app/src/main/java/org/floens/chan/ui/layout/ThreadListLayout.java

@@ -164,6 +164,16 @@ public class ThreadListLayout extends LinearLayout implements ReplyLayout.ReplyL
         }
     }
 
+    public boolean canChildScrollUp() {
+        View top = recyclerView.getChildAt(0);
+        if (top != null) {
+            if (top.getTop() == 0 && linearLayoutManager.findFirstVisibleItemPosition() == 0) {
+                return false;
+            }
+        }
+        return true;
+    }
+
     public void cleanup() {
         /*if (ChanBuild.DEVELOPER_MODE) {
             Pin pin = ChanApplication.getWatchManager().findPinByLoadable(showingThread.loadable);

Clover/app/src/main/java/org/floens/chan/ui/view/LoadView.java

@@ -86,8 +86,8 @@ public class LoadView extends FrameLayout {
      *
      * @param newView the view or null for a progressbar.
      */
-    public void setView(View newView) {
+    public View setView(View newView) {
-        setView(newView, true);
+        return setView(newView, true);
     }
 
     /**
@@ -97,7 +97,7 @@ public class LoadView extends FrameLayout {
      * @param newView the view or null for a progressbar.
      * @param animate should it be animated
      */
-    public void setView(View newView, boolean animate) {
+    public View setView(View newView, boolean animate) {
         if (newView == null) {
             FrameLayout progressBar = new FrameLayout(getContext());
             progressBar.addView(new ProgressBar(getContext()), new FrameLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, Gravity.CENTER));
@@ -190,6 +190,8 @@ public class LoadView extends FrameLayout {
             newView.setAlpha(1f);
             addView(newView, getLayoutParamsForView(newView));
         }
+
+        return newView;
     }
 
     public LayoutParams getLayoutParamsForView(View view) {