diff -r 000000000000 -r 6474c204b198 mobile/android/base/home/PanelViewAdapter.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mobile/android/base/home/PanelViewAdapter.java Wed Dec 31 06:09:35 2014 +0100 @@ -0,0 +1,113 @@ +/* -*- 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.home.HomeConfig.ItemType; +import org.mozilla.gecko.home.HomeConfig.ViewConfig; +import org.mozilla.gecko.home.PanelLayout.FilterManager; + +import org.mozilla.gecko.R; + +import android.content.Context; +import android.database.Cursor; +import android.support.v4.widget.CursorAdapter; +import android.view.View; +import android.view.ViewGroup; + +class PanelViewAdapter extends CursorAdapter { + private static final int VIEW_TYPE_ITEM = 0; + private static final int VIEW_TYPE_BACK = 1; + + private final ViewConfig viewConfig; + private FilterManager filterManager; + private final Context context; + + public PanelViewAdapter(Context context, ViewConfig viewConfig) { + super(context, null, 0); + this.context = context; + this.viewConfig = viewConfig; + } + + public void setFilterManager(FilterManager manager) { + this.filterManager = manager; + } + + @Override + public final int getViewTypeCount() { + return 2; + } + + @Override + public int getCount() { + return super.getCount() + (isShowingBack() ? 1 : 0); + } + + @Override + public int getItemViewType(int position) { + if (isShowingBack() && position == 0) { + return VIEW_TYPE_BACK; + } else { + return VIEW_TYPE_ITEM; + } + } + + @Override + public final View getView(int position, View convertView, ViewGroup parent) { + if (convertView == null) { + convertView = newView(parent.getContext(), position, parent); + } + + bindView(convertView, position); + return convertView; + } + + private View newView(Context context, int position, ViewGroup parent) { + if (getItemViewType(position) == VIEW_TYPE_BACK) { + return new PanelBackItemView(context, viewConfig.getBackImageUrl()); + } else { + return PanelItemView.create(context, viewConfig.getItemType()); + } + } + + private void bindView(View view, int position) { + if (isShowingBack()) { + if (position == 0) { + final PanelBackItemView item = (PanelBackItemView) view; + item.updateFromFilter(filterManager.getPreviousFilter()); + return; + } + + position--; + } + + final Cursor cursor = getCursor(position); + final PanelItemView item = (PanelItemView) view; + item.updateFromCursor(cursor); + } + + private boolean isShowingBack() { + return (filterManager != null ? filterManager.canGoBack() : false); + } + + private final Cursor getCursor(int position) { + final Cursor cursor = getCursor(); + if (cursor == null || !cursor.moveToPosition(position)) { + throw new IllegalStateException("Couldn't move cursor to position " + position); + } + + return cursor; + } + + @Override + public final void bindView(View view, Context context, Cursor cursor) { + // Do nothing. + } + + @Override + public final View newView(Context context, Cursor cursor, ViewGroup parent) { + return null; + } +}