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/*
* Copyright (C) 2022 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.settingslib.widget;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
import androidx.annotation.GravityInt;
import androidx.preference.Preference;
import androidx.preference.PreferenceViewHolder;
/**
* A preference handled a button
*/
public class ButtonPreference extends Preference {
private static final int ICON_SIZE = 24;
private View.OnClickListener mClickListener;
private Button mButton;
private CharSequence mTitle;
private Drawable mIcon;
@GravityInt
private int mGravity;
/**
* Constructs a new LayoutPreference with the given context's theme, the supplied
* attribute set, and default style attribute.
*
* @param context The Context the view is running in, through which it can
* access the current theme, resources, etc.
* @param attrs The attributes of the XML tag that is inflating the view.
* @param defStyleAttr An attribute in the current theme that contains a
* reference to a style resource that supplies default
* values for the view. Can be 0 to not look for
* defaults.
*/
public ButtonPreference(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init(context, attrs, defStyleAttr);
}
/**
* Constructs a new LayoutPreference with the given context's theme and the supplied
* attribute set.
*
* @param context The Context the view is running in, through which it can
* access the current theme, resources, etc.
* @param attrs The attributes of the XML tag that is inflating the view.
*/
public ButtonPreference(Context context, AttributeSet attrs) {
this(context, attrs, 0 /* defStyleAttr */);
}
/**
* Constructs a new LayoutPreference with the given context's theme and a customized view.
*
* @param context The Context the view is running in, through which it can
* access the current theme, resources, etc.
*/
public ButtonPreference(Context context) {
this(context, null);
}
private void init(Context context, AttributeSet attrs, int defStyleAttr) {
setLayoutResource(R.layout.settingslib_button_layout);
if (attrs != null) {
TypedArray a = context.obtainStyledAttributes(attrs,
androidx.preference.R.styleable.Preference, defStyleAttr,
0 /*defStyleRes*/);
mTitle = a.getText(
androidx.preference.R.styleable.Preference_android_title);
mIcon = a.getDrawable(
androidx.preference.R.styleable.Preference_android_icon);
a.recycle();
a = context.obtainStyledAttributes(attrs,
R.styleable.ButtonPreference, defStyleAttr,
0 /*defStyleRes*/);
mGravity = a.getInt(R.styleable.ButtonPreference_android_gravity, Gravity.START);
a.recycle();
}
}
@Override
public void onBindViewHolder(PreferenceViewHolder holder) {
mButton = (Button) holder.findViewById(R.id.settingslib_button);
setTitle(mTitle);
setIcon(mIcon);
setGravity(mGravity);
setOnClickListener(mClickListener);
if (mButton != null) {
final boolean selectable = isSelectable();
mButton.setFocusable(selectable);
mButton.setClickable(selectable);
mButton.setEnabled(isEnabled());
}
holder.setDividerAllowedAbove(false);
holder.setDividerAllowedBelow(false);
}
@Override
public void setTitle(CharSequence title) {
mTitle = title;
if (mButton != null) {
mButton.setText(title);
}
}
@Override
public CharSequence getTitle() {
return mTitle;
}
@Override
public void setIcon(Drawable icon) {
mIcon = icon;
if (mButton == null || icon == null) {
return;
}
//get pixel from dp
int size = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, ICON_SIZE,
getContext().getResources().getDisplayMetrics());
icon.setBounds(0, 0, size, size);
//set drawableStart
mButton.setCompoundDrawablesRelativeWithIntrinsicBounds(icon, null/* top */, null/* end */,
null/* bottom */);
}
@Override
public void setEnabled(boolean enabled) {
super.setEnabled(enabled);
if (mButton != null) {
mButton.setEnabled(enabled);
}
}
/**
* Return Button
*/
public Button getButton() {
return mButton;
}
/**
* Set a listener for button click
*/
public void setOnClickListener(View.OnClickListener listener) {
mClickListener = listener;
if (mButton != null) {
mButton.setOnClickListener(listener);
}
}
/**
* Set the gravity of button
*
* @param gravity The {@link Gravity} supported CENTER_HORIZONTAL
* and the default value is START
*/
public void setGravity(@GravityInt int gravity) {
if (gravity == Gravity.CENTER_HORIZONTAL || gravity == Gravity.CENTER_VERTICAL
|| gravity == Gravity.CENTER) {
mGravity = Gravity.CENTER_HORIZONTAL;
} else {
mGravity = Gravity.START;
}
if (mButton != null) {
LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) mButton.getLayoutParams();
lp.gravity = mGravity;
mButton.setLayoutParams(lp);
}
}
}
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