Bug 970707 - Wrap child view in GeckoSwipeRefreshLayout. r=margaret

mobile/android/base/home/PanelLayout.java

@@ -373,6 +373,10 @@ abstract class PanelLayout extends FrameLayout {
             if (view instanceof DatasetBacked) {
                 DatasetBacked datasetBacked = (DatasetBacked) view;
                 datasetBacked.setFilterManager(new PanelFilterManager(viewState));
+
+                if (viewConfig.isRefreshEnabled()) {
+                    view = new PanelRefreshLayout(getContext(), view);
+                }
             }
 
             viewState.setView(view);

mobile/android/base/home/PanelRefreshLayout.java

@@ -0,0 +1,66 @@
+/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.gecko.home;
+
+import org.mozilla.gecko.R;
+
+import org.mozilla.gecko.home.PanelLayout.DatasetBacked;
+import org.mozilla.gecko.home.PanelLayout.FilterManager;
+import org.mozilla.gecko.widget.GeckoSwipeRefreshLayout;
+import org.mozilla.gecko.widget.GeckoSwipeRefreshLayout.OnRefreshListener;
+
+import android.content.Context;
+import android.database.Cursor;
+import android.view.View;
+
+/**
+ * Used to wrap a {@code DatasetBacked} ListView or GridView to give the child view swipe-to-refresh
+ * capabilities.
+ *
+ * This view acts as a decorator to forward the {@code DatasetBacked} methods to the child view
+ * while providing the refresh gesture support on top of it.
+ */
+class PanelRefreshLayout extends GeckoSwipeRefreshLayout implements DatasetBacked {
+    private final DatasetBacked datasetBacked;
+
+    /**
+     * @param context Android context.
+     * @param childView ListView or GridView. Must implement {@code DatasetBacked}.
+     */
+    public PanelRefreshLayout(Context context, View childView) {
+        super(context);
+
+        if (!(childView instanceof DatasetBacked)) {
+            throw new IllegalArgumentException("View must implement DatasetBacked to be refreshed");
+        }
+
+        this.datasetBacked = (DatasetBacked) childView;
+
+        setOnRefreshListener(new RefreshListener());
+        addView(childView);
+
+        // Must be called after the child view has been added.
+        setColorScheme(R.color.swipe_refresh_orange, R.color.swipe_refresh_white,
+                       R.color.swipe_refresh_orange, R.color.swipe_refresh_white);
+    }
+
+    @Override
+    public void setDataset(Cursor cursor) {
+        datasetBacked.setDataset(cursor);
+    }
+
+    @Override
+    public void setFilterManager(FilterManager manager) {
+        datasetBacked.setFilterManager(manager);
+    }
+
+    private class RefreshListener implements OnRefreshListener {
+        @Override
+        public void onRefresh() {
+            setRefreshing(false);
+        }
+    }
+}

mobile/android/base/moz.build

@@ -267,6 +267,7 @@ gbjar.sources += [
     'home/PanelLayout.java',
     'home/PanelListView.java',
     'home/PanelManager.java',
+    'home/PanelRefreshLayout.java',
     'home/PanelViewAdapter.java',
     'home/PanelViewItemHandler.java',
     'home/PinSiteDialog.java',

mobile/android/base/resources/values/colors.xml

@@ -91,5 +91,9 @@
   <color name="home_last_tab_bar_bg">#FFF5F7F9</color>
 
   <color name="panel_image_item_background">#D1D9E1</color>
+
+  <!-- Swipe to refresh colors -->
+  <color name="swipe_refresh_orange">#FFFFC26C</color>
+  <color name="swipe_refresh_white">#FFFFFFFF</color>
 </resources>