1 files changed, 122 insertions, 0 deletions
diff --git a/mobile/android/base/java/org/mozilla/gecko/home/SearchEngineAdapter.java b/mobile/android/base/java/org/mozilla/gecko/home/SearchEngineAdapter.java
new file mode 100644
index 000000000..be5b3b461
--- /dev/null
+++ b/mobile/android/base/java/org/mozilla/gecko/home/SearchEngineAdapter.java
@@ -0,0 +1,122 @@
+package org.mozilla.gecko.home;
+
+import android.content.Context;
+import android.graphics.drawable.Drawable;
+import android.support.v4.content.ContextCompat;
+import android.support.v4.graphics.drawable.DrawableCompat;
+import android.support.v7.widget.RecyclerView;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+
+import org.mozilla.gecko.R;
+
+import java.util.Collections;
+import java.util.List;
+
+public class SearchEngineAdapter
+        extends RecyclerView.Adapter<SearchEngineAdapter.SearchEngineViewHolder> {
+
+    private static final String LOGTAG = SearchEngineAdapter.class.getSimpleName();
+
+    private static final int VIEW_TYPE_SEARCH_ENGINE = 0;
+    private static final int VIEW_TYPE_LABEL = 1;
+    private final Context mContext;
+
+    private int mContainerWidth;
+    private List<SearchEngine> mSearchEngines = Collections.emptyList();
+
+    public void setSearchEngines(List<SearchEngine> searchEngines) {
+        mSearchEngines = searchEngines;
+        notifyDataSetChanged();
+    }
+
+    /**
+     * The container width is used for setting the appropriate calculated amount of width that
+     * a search engine icon can have. This varies depending on the space available in the
+     * {@link SearchEngineBar}. The setter exists for this attribute, in creating the view in the
+     * adapter after said calculation is done when the search bar is created.
+     * @param iconContainerWidth Width of each search icon.
+     */
+    void setIconContainerWidth(int iconContainerWidth) {
+        mContainerWidth = iconContainerWidth;
+    }
+
+    public static class SearchEngineViewHolder extends RecyclerView.ViewHolder {
+        final private ImageView faviconView;
+
+        public void bindItem(SearchEngine searchEngine) {
+            faviconView.setImageBitmap(searchEngine.getIcon());
+            final String desc = itemView.getResources().getString(R.string.search_bar_item_desc,
+                searchEngine.getEngineIdentifier());
+            itemView.setContentDescription(desc);
+        }
+
+        public SearchEngineViewHolder(View itemView) {
+            super(itemView);
+            faviconView = (ImageView) itemView.findViewById(R.id.search_engine_icon);
+        }
+    }
+
+    public SearchEngineAdapter(Context context) {
+        mContext = context;
+    }
+
+    @Override
+    public int getItemViewType(int position) {
+        return position == 0 ? VIEW_TYPE_LABEL : VIEW_TYPE_SEARCH_ENGINE;
+    }
+
+    public SearchEngine getItem(int position) {
+        // We omit the first position which is where the label currently is.
+        return position == 0 ? null : mSearchEngines.get(position - 1);
+    }
+
+    @Override
+    public SearchEngineViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
+        switch (viewType) {
+            case VIEW_TYPE_LABEL:
+                return new SearchEngineViewHolder(createLabelView(parent));
+            case VIEW_TYPE_SEARCH_ENGINE:
+                return new SearchEngineViewHolder(createSearchEngineView(parent));
+            default:
+                throw new IllegalArgumentException("Unknown view type: "  + viewType);
+        }
+    }
+
+    @Override
+    public void onBindViewHolder(SearchEngineViewHolder holder, int position) {
+        if (position != 0) {
+            holder.bindItem(getItem(position));
+        }
+    }
+
+    @Override
+    public int getItemCount() {
+        return mSearchEngines.size() + 1;
+    }
+
+    private View createLabelView(ViewGroup parent) {
+        View view = LayoutInflater.from(mContext)
+                        .inflate(R.layout.search_engine_bar_label, parent, false);
+        final Drawable icon = DrawableCompat.wrap(
+                ContextCompat.getDrawable(mContext, R.drawable.search_icon_active).mutate());
+        DrawableCompat.setTint(icon, ContextCompat.getColor(mContext, R.color.disabled_grey));
+
+        final ImageView iconView = (ImageView) view.findViewById(R.id.search_engine_label);
+        iconView.setImageDrawable(icon);
+        return view;
+    }
+
+    private View createSearchEngineView(ViewGroup parent) {
+        View view = LayoutInflater.from(mContext)
+                    .inflate(R.layout.search_engine_bar_item, parent, false);
+
+        ViewGroup.LayoutParams params = view.getLayoutParams();
+        params.width = mContainerWidth;
+        view.setLayoutParams(params);
+
+        return view;
+    }
+}