| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.systemui.volume; |
| |
| import android.content.Context; |
| import android.graphics.Typeface; |
| import android.util.AttributeSet; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.widget.Button; |
| import android.widget.LinearLayout; |
| import android.widget.TextView; |
| |
| import com.android.systemui.R; |
| |
| import java.util.Objects; |
| |
| public class SegmentedButtons extends LinearLayout { |
| private static final int LABEL_RES_KEY = R.id.label; |
| private static final Typeface REGULAR = Typeface.create("sans-serif", Typeface.NORMAL); |
| private static final Typeface MEDIUM = Typeface.create("sans-serif-medium", Typeface.NORMAL); |
| |
| private final Context mContext; |
| private final LayoutInflater mInflater; |
| |
| private Callback mCallback; |
| private Object mSelectedValue; |
| |
| public SegmentedButtons(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| mContext = context; |
| mInflater = LayoutInflater.from(mContext); |
| setOrientation(HORIZONTAL); |
| } |
| |
| public void setCallback(Callback callback) { |
| mCallback = callback; |
| } |
| |
| public Object getSelectedValue() { |
| return mSelectedValue; |
| } |
| |
| public void setSelectedValue(Object value) { |
| if (Objects.equals(value, mSelectedValue)) return; |
| mSelectedValue = value; |
| for (int i = 0; i < getChildCount(); i++) { |
| final TextView c = (TextView) getChildAt(i); |
| final Object tag = c.getTag(); |
| final boolean selected = Objects.equals(mSelectedValue, tag); |
| c.setSelected(selected); |
| c.setTypeface(selected ? MEDIUM : REGULAR); |
| } |
| fireOnSelected(); |
| } |
| |
| public void addButton(int labelResId, Object value) { |
| final Button b = (Button) mInflater.inflate(R.layout.segmented_button, this, false); |
| b.setTag(LABEL_RES_KEY, labelResId); |
| b.setText(labelResId); |
| final LayoutParams lp = (LayoutParams) b.getLayoutParams(); |
| if (getChildCount() == 0) { |
| lp.leftMargin = lp.rightMargin = 0; // first button has no margin |
| } |
| b.setLayoutParams(lp); |
| addView(b); |
| b.setTag(value); |
| b.setOnClickListener(mClick); |
| Interaction.register(b, new Interaction.Callback() { |
| @Override |
| public void onInteraction() { |
| fireInteraction(); |
| } |
| }); |
| } |
| |
| public void updateLocale() { |
| for (int i = 0; i < getChildCount(); i++) { |
| final Button b = (Button) getChildAt(i); |
| final int labelResId = (Integer) b.getTag(LABEL_RES_KEY); |
| b.setText(labelResId); |
| } |
| } |
| |
| private void fireOnSelected() { |
| if (mCallback != null) { |
| mCallback.onSelected(mSelectedValue); |
| } |
| } |
| |
| private void fireInteraction() { |
| if (mCallback != null) { |
| mCallback.onInteraction(); |
| } |
| } |
| |
| private final View.OnClickListener mClick = new View.OnClickListener() { |
| @Override |
| public void onClick(View v) { |
| setSelectedValue(v.getTag()); |
| } |
| }; |
| |
| public interface Callback extends Interaction.Callback { |
| void onSelected(Object value); |
| } |
| } |