package android.widget;
import android.annotation.DrawableRes;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.content.Context;
import android.content.res.ColorStateList;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.PorterDuff;
import android.graphics.drawable.Drawable;
import android.os.Parcel;
import android.os.Parcelable;
import android.util.AttributeSet;
import android.util.Log;
import android.view.Gravity;
import android.view.SoundEffectConstants;
import android.view.ViewDebug;
import android.view.ViewHierarchyEncoder;
import android.view.ViewStructure;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityNodeInfo;
import android.view.autofill.AutofillManager;
import android.view.autofill.AutofillValue;
import com.android.internal.R;
public abstract class CompoundButton extends Button implements Checkable {
private static final String LOG_TAG = CompoundButton.class.getSimpleName();
private boolean mChecked;
private boolean mBroadcasting;
private Drawable mButtonDrawable;
private ColorStateList mButtonTintList = null;
private PorterDuff.Mode mButtonTintMode = null;
private boolean mHasButtonTint = false;
private boolean mHasButtonTintMode = false;
private OnCheckedChangeListener mOnCheckedChangeListener;
private OnCheckedChangeListener mOnCheckedChangeWidgetListener;
private boolean mCheckedFromResource = false;
private static final int[] CHECKED_STATE_SET = {
R.attr.state_checked
};
public CompoundButton(Context context) {
this(context, null);
}
public CompoundButton(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public CompoundButton(Context context, AttributeSet attrs, int defStyleAttr) {
this(context, attrs, defStyleAttr, 0);
}
public CompoundButton(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
final TypedArray a = context.obtainStyledAttributes(
attrs, com.android.internal.R.styleable.CompoundButton, defStyleAttr, defStyleRes);
final Drawable d = a.getDrawable(com.android.internal.R.styleable.CompoundButton_button);
if (d != null) {
setButtonDrawable(d);
}
if (a.hasValue(R.styleable.CompoundButton_buttonTintMode)) {
mButtonTintMode = Drawable.parseTintMode(a.getInt(
R.styleable.CompoundButton_buttonTintMode, -1), mButtonTintMode);
mHasButtonTintMode = true;
}
if (a.hasValue(R.styleable.CompoundButton_buttonTint)) {
mButtonTintList = a.getColorStateList(R.styleable.CompoundButton_buttonTint);
mHasButtonTint = true;
}
final boolean checked = a.getBoolean(
com.android.internal.R.styleable.CompoundButton_checked, false);
setChecked(checked);
mCheckedFromResource = true;
a.recycle();
applyButtonTint();
}
@Override
public void toggle() {
setChecked(!mChecked);
}
@Override
public boolean performClick() {
toggle();
final boolean handled = super.performClick();
if (!handled) {
playSoundEffect(SoundEffectConstants.CLICK);
}
return handled;
}
@ViewDebug.ExportedProperty
@Override
public boolean isChecked() {
return mChecked;
}
@Override
public void setChecked(boolean checked) {
if (mChecked != checked) {
mCheckedFromResource = false;
mChecked = checked;
refreshDrawableState();
notifyViewAccessibilityStateChangedIfNeeded(
AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
if (mBroadcasting) {
return;
}
mBroadcasting = true;
if (mOnCheckedChangeListener != null) {
mOnCheckedChangeListener.onCheckedChanged(this, mChecked);
}
if (mOnCheckedChangeWidgetListener != null) {
mOnCheckedChangeWidgetListener.onCheckedChanged(this, mChecked);
}
final AutofillManager afm = mContext.getSystemService(AutofillManager.class);
if (afm != null) {
afm.notifyValueChanged(this);
}
mBroadcasting = false;
}
}
public void setOnCheckedChangeListener(@Nullable OnCheckedChangeListener listener) {
mOnCheckedChangeListener = listener;
}
void setOnCheckedChangeWidgetListener(OnCheckedChangeListener listener) {
mOnCheckedChangeWidgetListener = listener;
}
public static interface OnCheckedChangeListener {
void onCheckedChanged(CompoundButton buttonView, boolean isChecked);
}
public void setButtonDrawable(@DrawableRes int resId) {
final Drawable d;
if (resId != 0) {
d = getContext().getDrawable(resId);
} else {
d = null;
}
setButtonDrawable(d);
}
public void setButtonDrawable(@Nullable Drawable drawable) {
if (mButtonDrawable != drawable) {
if (mButtonDrawable != null) {
mButtonDrawable.setCallback(null);
unscheduleDrawable(mButtonDrawable);
}
mButtonDrawable = drawable;
if (drawable != null) {
drawable.setCallback(this);
drawable.setLayoutDirection(getLayoutDirection());
if (drawable.isStateful()) {
drawable.setState(getDrawableState());
}
drawable.setVisible(getVisibility() == VISIBLE, false);
setMinHeight(drawable.getIntrinsicHeight());
applyButtonTint();
}
}
}
@Override
public void onResolveDrawables(@ResolvedLayoutDir int layoutDirection) {
super.onResolveDrawables(layoutDirection);
if (mButtonDrawable != null) {
mButtonDrawable.setLayoutDirection(layoutDirection);
}
}
@Nullable
public Drawable getButtonDrawable() {
return mButtonDrawable;
}
public void setButtonTintList(@Nullable ColorStateList tint) {
mButtonTintList = tint;
mHasButtonTint = true;
applyButtonTint();
}
@Nullable
public ColorStateList getButtonTintList() {
return mButtonTintList;
}
public void setButtonTintMode(@Nullable PorterDuff.Mode tintMode) {
mButtonTintMode = tintMode;
mHasButtonTintMode = true;
applyButtonTint();
}
@Nullable
public PorterDuff.Mode getButtonTintMode() {
return mButtonTintMode;
}
private void applyButtonTint() {
if (mButtonDrawable != null && (mHasButtonTint || mHasButtonTintMode)) {
mButtonDrawable = mButtonDrawable.mutate();
if (mHasButtonTint) {
mButtonDrawable.setTintList(mButtonTintList);
}
if (mHasButtonTintMode) {
mButtonDrawable.setTintMode(mButtonTintMode);
}
if (mButtonDrawable.isStateful()) {
mButtonDrawable.setState(getDrawableState());
}
}
}
@Override
public CharSequence getAccessibilityClassName() {
return CompoundButton.class.getName();
}
@Override
public void onInitializeAccessibilityEventInternal(AccessibilityEvent event) {
super.onInitializeAccessibilityEventInternal(event);
event.setChecked(mChecked);
}
@Override
public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfoInternal(info);
info.setCheckable(true);
info.setChecked(mChecked);
}
@Override
public int getCompoundPaddingLeft() {
int padding = super.getCompoundPaddingLeft();
if (!isLayoutRtl()) {
final Drawable buttonDrawable = mButtonDrawable;
if (buttonDrawable != null) {
padding += buttonDrawable.getIntrinsicWidth();
}
}
return padding;
}
@Override
public int getCompoundPaddingRight() {
int padding = super.getCompoundPaddingRight();
if (isLayoutRtl()) {
final Drawable buttonDrawable = mButtonDrawable;
if (buttonDrawable != null) {
padding += buttonDrawable.getIntrinsicWidth();
}
}
return padding;
}
@Override
public int getHorizontalOffsetForDrawables() {
final Drawable buttonDrawable = mButtonDrawable;
return (buttonDrawable != null) ? buttonDrawable.getIntrinsicWidth() : 0;
}
@Override
protected void onDraw(Canvas canvas) {
final Drawable buttonDrawable = mButtonDrawable;
if (buttonDrawable != null) {
final int verticalGravity = getGravity() & Gravity.VERTICAL_GRAVITY_MASK;
final int drawableHeight = buttonDrawable.getIntrinsicHeight();
final int drawableWidth = buttonDrawable.getIntrinsicWidth();
final int top;
switch (verticalGravity) {
case Gravity.BOTTOM:
top = getHeight() - drawableHeight;
break;
case Gravity.CENTER_VERTICAL:
top = (getHeight() - drawableHeight) / 2;
break;
default:
top = 0;
}
final int bottom = top + drawableHeight;
final int left = isLayoutRtl() ? getWidth() - drawableWidth : 0;
final int right = isLayoutRtl() ? getWidth() : drawableWidth;
buttonDrawable.setBounds(left, top, right, bottom);
final Drawable background = getBackground();
if (background != null) {
background.setHotspotBounds(left, top, right, bottom);
}
}
super.onDraw(canvas);
if (buttonDrawable != null) {
final int scrollX = mScrollX;
final int scrollY = mScrollY;
if (scrollX == 0 && scrollY == 0) {
buttonDrawable.draw(canvas);
} else {
canvas.translate(scrollX, scrollY);
buttonDrawable.draw(canvas);
canvas.translate(-scrollX, -scrollY);
}
}
}
@Override
protected int[] onCreateDrawableState(int extraSpace) {
final int[] drawableState = super.onCreateDrawableState(extraSpace + 1);
if (isChecked()) {
mergeDrawableStates(drawableState, CHECKED_STATE_SET);
}
return drawableState;
}
@Override
protected void drawableStateChanged() {
super.drawableStateChanged();
final Drawable buttonDrawable = mButtonDrawable;
if (buttonDrawable != null && buttonDrawable.isStateful()
&& buttonDrawable.setState(getDrawableState())) {
invalidateDrawable(buttonDrawable);
}
}
@Override
public void drawableHotspotChanged(float x, float y) {
super.drawableHotspotChanged(x, y);
if (mButtonDrawable != null) {
mButtonDrawable.setHotspot(x, y);
}
}
@Override
protected boolean verifyDrawable(@NonNull Drawable who) {
return super.verifyDrawable(who) || who == mButtonDrawable;
}
@Override
public void jumpDrawablesToCurrentState() {
super.jumpDrawablesToCurrentState();
if (mButtonDrawable != null) mButtonDrawable.jumpToCurrentState();
}
static class SavedState extends BaseSavedState {
boolean checked;
SavedState(Parcelable superState) {
super(superState);
}
private SavedState(Parcel in) {
super(in);
checked = (Boolean)in.readValue(null);
}
@Override
public void writeToParcel(Parcel out, int flags) {
super.writeToParcel(out, flags);
out.writeValue(checked);
}
@Override
public String toString() {
return "CompoundButton.SavedState{"
+ Integer.toHexString(System.identityHashCode(this))
+ " checked=" + checked + "}";
}
@SuppressWarnings("hiding")
public static final Parcelable.Creator<SavedState> CREATOR =
new Parcelable.Creator<SavedState>() {
@Override
public SavedState createFromParcel(Parcel in) {
return new SavedState(in);
}
@Override
public SavedState[] newArray(int size) {
return new SavedState[size];
}
};
}
@Override
public Parcelable onSaveInstanceState() {
Parcelable superState = super.onSaveInstanceState();
SavedState ss = new SavedState(superState);
ss.checked = isChecked();
return ss;
}
@Override
public void onRestoreInstanceState(Parcelable state) {
SavedState ss = (SavedState) state;
super.onRestoreInstanceState(ss.getSuperState());
setChecked(ss.checked);
requestLayout();
}
@Override
protected void encodeProperties(@NonNull ViewHierarchyEncoder stream) {
super.encodeProperties(stream);
stream.addProperty("checked", isChecked());
}
@Override
public void onProvideAutofillStructure(ViewStructure structure, int flags) {
super.onProvideAutofillStructure(structure, flags);
structure.setDataIsSensitive(!mCheckedFromResource);
}
@Override
public void autofill(AutofillValue value) {
if (!isEnabled()) return;
if (!value.isToggle()) {
Log.w(LOG_TAG, value + " could not be autofilled into " + this);
return;
}
setChecked(value.getToggleValue());
}
@Override
public @AutofillType int getAutofillType() {
return isEnabled() ? AUTOFILL_TYPE_TOGGLE : AUTOFILL_TYPE_NONE;
}
@Override
public AutofillValue getAutofillValue() {
return isEnabled() ? AutofillValue.forToggle(isChecked()) : null;
}
}