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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 org.mozilla.gecko.home.PanelLayout.DatasetBacked;
import org.mozilla.gecko.home.PanelLayout.PanelView;
import org.mozilla.gecko.widget.RecyclerViewClickSupport;
import org.mozilla.gecko.widget.RecyclerViewClickSupport.OnItemClickListener;
import org.mozilla.gecko.widget.RecyclerViewClickSupport.OnItemLongClickListener;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.res.Resources;
import android.database.Cursor;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
/**
* RecyclerView implementation for grid home panels.
*/
@SuppressLint("ViewConstructor") // View is only created from code
public class PanelRecyclerView extends RecyclerView
implements DatasetBacked, PanelView, OnItemClickListener, OnItemLongClickListener {
private final PanelRecyclerViewAdapter adapter;
private final GridLayoutManager layoutManager;
private final PanelViewItemHandler itemHandler;
private final float columnWidth;
private final boolean autoFit;
private final HomeConfig.ViewConfig viewConfig;
private PanelLayout.OnItemOpenListener itemOpenListener;
private HomeContextMenuInfo contextMenuInfo;
private HomeContextMenuInfo.Factory contextMenuInfoFactory;
public PanelRecyclerView(Context context, HomeConfig.ViewConfig viewConfig) {
super(context);
this.viewConfig = viewConfig;
final Resources resources = context.getResources();
int spanCount;
if (viewConfig.getItemType() == HomeConfig.ItemType.ICON) {
autoFit = false;
spanCount = getResources().getInteger(R.integer.panel_icon_grid_view_columns);
} else {
autoFit = true;
spanCount = 1;
}
columnWidth = resources.getDimension(R.dimen.panel_grid_view_column_width);
layoutManager = new GridLayoutManager(context, spanCount);
adapter = new PanelRecyclerViewAdapter(context, viewConfig);
itemHandler = new PanelViewItemHandler();
layoutManager.setSpanSizeLookup(new PanelSpanSizeLookup());
setLayoutManager(layoutManager);
setAdapter(adapter);
int horizontalSpacing = (int) resources.getDimension(R.dimen.panel_grid_view_horizontal_spacing);
int verticalSpacing = (int) resources.getDimension(R.dimen.panel_grid_view_vertical_spacing);
int outerSpacing = (int) resources.getDimension(R.dimen.panel_grid_view_outer_spacing);
addItemDecoration(new SpacingDecoration(horizontalSpacing, verticalSpacing));
setPadding(outerSpacing, outerSpacing, outerSpacing, outerSpacing);
setClipToPadding(false);
RecyclerViewClickSupport.addTo(this)
.setOnItemClickListener(this)
.setOnItemLongClickListener(this);
}
@Override
protected void onMeasure(int widthSpec, int heightSpec) {
super.onMeasure(widthSpec, heightSpec);
if (autoFit) {
// Adjust span based on space available (What GridView does when you say numColumns="auto_fit")
final int spanCount = (int) Math.max(1, getMeasuredWidth() / columnWidth);
layoutManager.setSpanCount(spanCount);
}
}
@Override
public void onAttachedToWindow() {
super.onAttachedToWindow();
itemHandler.setOnItemOpenListener(itemOpenListener);
}
@Override
public void onDetachedFromWindow() {
super.onDetachedFromWindow();
itemHandler.setOnItemOpenListener(null);
}
@Override
public void setDataset(Cursor cursor) {
adapter.swapCursor(cursor);
}
@Override
public void setFilterManager(PanelLayout.FilterManager manager) {
adapter.setFilterManager(manager);
itemHandler.setFilterManager(manager);
}
@Override
public void setOnItemOpenListener(PanelLayout.OnItemOpenListener listener) {
itemOpenListener = listener;
itemHandler.setOnItemOpenListener(listener);
}
@Override
public HomeContextMenuInfo getContextMenuInfo() {
return contextMenuInfo;
}
@Override
public void setContextMenuInfoFactory(HomeContextMenuInfo.Factory factory) {
contextMenuInfoFactory = factory;
}
@Override
public void onItemClicked(RecyclerView recyclerView, int position, View v) {
if (viewConfig.hasHeaderConfig()) {
if (position == 0) {
itemOpenListener.onItemOpen(viewConfig.getHeaderConfig().getUrl(), null);
return;
}
position--;
}
itemHandler.openItemAtPosition(adapter.getCursor(), position);
}
@Override
public boolean onItemLongClicked(RecyclerView recyclerView, int position, View v) {
if (viewConfig.hasHeaderConfig()) {
if (position == 0) {
final HomeConfig.HeaderConfig headerConfig = viewConfig.getHeaderConfig();
final HomeContextMenuInfo info = new HomeContextMenuInfo(v, position, -1);
info.url = headerConfig.getUrl();
info.title = headerConfig.getUrl();
contextMenuInfo = info;
return showContextMenuForChild(this);
}
position--;
}
Cursor cursor = adapter.getCursor();
cursor.moveToPosition(position);
contextMenuInfo = contextMenuInfoFactory.makeInfoForCursor(recyclerView, position, -1, cursor);
return showContextMenuForChild(this);
}
private class PanelSpanSizeLookup extends GridLayoutManager.SpanSizeLookup {
@Override
public int getSpanSize(int position) {
if (position == 0 && viewConfig.hasHeaderConfig()) {
return layoutManager.getSpanCount();
}
return 1;
}
}
}
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