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/* -*- 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 android.content.Context;
import android.database.Cursor;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
public class PanelRecyclerViewAdapter extends RecyclerView.Adapter<PanelRecyclerViewAdapter.PanelViewHolder> {
private static final int VIEW_TYPE_ITEM = 0;
private static final int VIEW_TYPE_BACK = 1;
private static final int VIEW_TYPE_HEADER = 2;
public static class PanelViewHolder extends RecyclerView.ViewHolder {
public static PanelViewHolder create(View itemView) {
// Wrap in a FrameLayout that will handle the highlight on touch
FrameLayout frameLayout = (FrameLayout) LayoutInflater.from(itemView.getContext())
.inflate(R.layout.panel_item_container, null);
frameLayout.addView(itemView, 0, new FrameLayout.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
return new PanelViewHolder(frameLayout);
}
private PanelViewHolder(View itemView) {
super(itemView);
}
}
private final Context context;
private final HomeConfig.ViewConfig viewConfig;
private PanelLayout.FilterManager filterManager;
private Cursor cursor;
public PanelRecyclerViewAdapter(Context context, HomeConfig.ViewConfig viewConfig) {
this.context = context;
this.viewConfig = viewConfig;
}
public void setFilterManager(PanelLayout.FilterManager filterManager) {
this.filterManager = filterManager;
}
private boolean isShowingBack() {
return filterManager != null && filterManager.canGoBack();
}
public void swapCursor(Cursor cursor) {
this.cursor = cursor;
notifyDataSetChanged();
}
public Cursor getCursor() {
return cursor;
}
@Override
public int getItemViewType(int position) {
if (viewConfig.hasHeaderConfig() && position == 0) {
return VIEW_TYPE_HEADER;
} else if (isShowingBack() && position == getBackPosition()) {
return VIEW_TYPE_BACK;
} else {
return VIEW_TYPE_ITEM;
}
}
@Override
public PanelViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
switch (viewType) {
case VIEW_TYPE_HEADER:
return PanelViewHolder.create(new PanelHeaderView(context, viewConfig.getHeaderConfig()));
case VIEW_TYPE_BACK:
return PanelViewHolder.create(new PanelBackItemView(context, viewConfig.getBackImageUrl()));
case VIEW_TYPE_ITEM:
return PanelViewHolder.create(PanelItemView.create(context, viewConfig.getItemType()));
default:
throw new IllegalArgumentException("Unknown view type: " + viewType);
}
}
@Override
public void onBindViewHolder(PanelViewHolder panelViewHolder, int position) {
final View view = ((FrameLayout) panelViewHolder.itemView).getChildAt(0);
if (viewConfig.hasHeaderConfig()) {
if (position == 0) {
// Nothing to do here, the header is static
return;
}
}
if (isShowingBack()) {
if (position == getBackPosition()) {
final PanelBackItemView item = (PanelBackItemView) view;
item.updateFromFilter(filterManager.getPreviousFilter());
return;
}
}
int actualPosition = position
- (isShowingBack() ? 1 : 0)
- (viewConfig.hasHeaderConfig() ? 1 : 0);
cursor.moveToPosition(actualPosition);
final PanelItemView panelItemView = (PanelItemView) view;
panelItemView.updateFromCursor(cursor);
}
private int getBackPosition() {
return viewConfig.hasHeaderConfig() ? 1 : 0;
}
@Override
public int getItemCount() {
if (cursor == null) {
return 0;
}
return cursor.getCount()
+ (isShowingBack() ? 1 : 0)
+ (viewConfig.hasHeaderConfig() ? 1 : 0);
}
}
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