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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 android.content.Context;
import android.content.Intent;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.support.v4.content.ContextCompat;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.View;
import org.mozilla.gecko.annotation.RobocopTarget;
import org.mozilla.gecko.R;
import org.mozilla.gecko.Telemetry;
import org.mozilla.gecko.TelemetryContract;
import org.mozilla.gecko.preferences.GeckoPreferences;
import org.mozilla.gecko.widget.RecyclerViewClickSupport;
import java.util.List;
public class SearchEngineBar extends RecyclerView
implements RecyclerViewClickSupport.OnItemClickListener {
private static final String LOGTAG = SearchEngineBar.class.getSimpleName();
private static final float ICON_CONTAINER_MIN_WIDTH_DP = 72;
private static final float LABEL_CONTAINER_WIDTH_DP = 48;
public interface OnSearchBarClickListener {
void onSearchBarClickListener(SearchEngine searchEngine);
}
private final SearchEngineAdapter mAdapter;
private final LinearLayoutManager mLayoutManager;
private final Paint mDividerPaint;
private final float mMinIconContainerWidth;
private final float mDividerHeight;
private final int mLabelContainerWidth;
private int mIconContainerWidth;
private OnSearchBarClickListener mOnSearchBarClickListener;
public SearchEngineBar(final Context context, final AttributeSet attrs) {
super(context, attrs);
mDividerPaint = new Paint();
mDividerPaint.setColor(ContextCompat.getColor(context, R.color.toolbar_divider_grey));
mDividerPaint.setStyle(Paint.Style.FILL_AND_STROKE);
final DisplayMetrics displayMetrics = getResources().getDisplayMetrics();
mMinIconContainerWidth = TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP, ICON_CONTAINER_MIN_WIDTH_DP, displayMetrics);
mDividerHeight = context.getResources().getDimension(R.dimen.page_row_divider_height);
mLabelContainerWidth = Math.round(TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP, LABEL_CONTAINER_WIDTH_DP, displayMetrics));
mIconContainerWidth = Math.round(mMinIconContainerWidth);
mAdapter = new SearchEngineAdapter(context);
mAdapter.setIconContainerWidth(mIconContainerWidth);
mLayoutManager = new LinearLayoutManager(context);
mLayoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);
setAdapter(mAdapter);
setLayoutManager(mLayoutManager);
RecyclerViewClickSupport.addTo(this)
.setOnItemClickListener(this);
}
public void setSearchEngines(List<SearchEngine> searchEngines) {
mAdapter.setSearchEngines(searchEngines);
}
public void setOnSearchBarClickListener(OnSearchBarClickListener listener) {
mOnSearchBarClickListener = listener;
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
final int searchEngineCount = mAdapter.getItemCount() - 1;
if (searchEngineCount > 0) {
final int availableWidth = getMeasuredWidth() - mLabelContainerWidth;
if (searchEngineCount * mMinIconContainerWidth <= availableWidth) {
// All search engines fit int: So let's just display all.
mIconContainerWidth = (int) mMinIconContainerWidth;
} else {
// If only (n) search engines fit into the available space then display only (x)
// search engines with (x) picked so that the last search engine will be cut-off
// (we only display half of it) to show the ability to scroll this view.
final double searchEnginesToDisplay = Math.floor((availableWidth / mMinIconContainerWidth) - 0.5) + 0.5;
// Use all available width and spread search engine icons
mIconContainerWidth = (int) (availableWidth / searchEnginesToDisplay);
}
mAdapter.setIconContainerWidth(mIconContainerWidth);
}
}
@Override
public void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawRect(0, 0, getWidth(), mDividerHeight, mDividerPaint);
}
@Override
public void onItemClicked(RecyclerView recyclerView, int position, View v) {
if (mOnSearchBarClickListener == null) {
throw new IllegalStateException(
OnSearchBarClickListener.class.getSimpleName() + " is not initializer."
);
}
if (position == 0) {
final Intent settingsIntent = new Intent(getContext(), GeckoPreferences.class);
GeckoPreferences.setResourceToOpen(settingsIntent, "preferences_search");
getContext().startActivity(settingsIntent);
Telemetry.sendUIEvent(TelemetryContract.Event.ACTION, TelemetryContract.Method.BUTTON, "searchenginebar-settings");
return;
}
final SearchEngine searchEngine = mAdapter.getItem(position);
mOnSearchBarClickListener.onSearchBarClickListener(searchEngine);
}
/**
* We manually add the override for getAdapter because we see this method getting stripped
* out during compile time by aggressive proguard rules.
*/
@RobocopTarget
@Override
public SearchEngineAdapter getAdapter() {
return mAdapter;
}
}
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