| /* |
| * Copyright (C) 2007 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 android.widget; |
| |
| import android.annotation.DrawableRes; |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.annotation.UnsupportedAppUsage; |
| import android.content.Context; |
| import android.content.res.ColorStateList; |
| import android.content.res.TypedArray; |
| import android.graphics.BlendMode; |
| 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 android.view.inspector.InspectableProperty; |
| |
| import com.android.internal.R; |
| |
| /** |
| * <p> |
| * A button with two states, checked and unchecked. When the button is pressed |
| * or clicked, the state changes automatically. |
| * </p> |
| * |
| * <p><strong>XML attributes</strong></p> |
| * <p> |
| * See {@link android.R.styleable#CompoundButton |
| * CompoundButton Attributes}, {@link android.R.styleable#Button Button |
| * Attributes}, {@link android.R.styleable#TextView TextView Attributes}, {@link |
| * android.R.styleable#View View Attributes} |
| * </p> |
| */ |
| public abstract class CompoundButton extends Button implements Checkable { |
| private static final String LOG_TAG = CompoundButton.class.getSimpleName(); |
| |
| private boolean mChecked; |
| @UnsupportedAppUsage |
| private boolean mBroadcasting; |
| |
| @UnsupportedAppUsage |
| private Drawable mButtonDrawable; |
| private ColorStateList mButtonTintList = null; |
| private BlendMode mButtonBlendMode = null; |
| private boolean mHasButtonTint = false; |
| private boolean mHasButtonBlendMode = false; |
| |
| @UnsupportedAppUsage |
| private OnCheckedChangeListener mOnCheckedChangeListener; |
| private OnCheckedChangeListener mOnCheckedChangeWidgetListener; |
| |
| // Indicates whether the toggle state was set from resources or dynamically, so it can be used |
| // to sanitize autofill requests. |
| 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); |
| saveAttributeDataForStyleable(context, com.android.internal.R.styleable.CompoundButton, |
| attrs, a, 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)) { |
| mButtonBlendMode = Drawable.parseBlendMode(a.getInt( |
| R.styleable.CompoundButton_buttonTintMode, -1), mButtonBlendMode); |
| mHasButtonBlendMode = 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) { |
| // View only makes a sound effect if the onClickListener was |
| // called, so we'll need to make one here instead. |
| playSoundEffect(SoundEffectConstants.CLICK); |
| } |
| |
| return handled; |
| } |
| |
| @InspectableProperty |
| @ViewDebug.ExportedProperty |
| @Override |
| public boolean isChecked() { |
| return mChecked; |
| } |
| |
| /** |
| * <p>Changes the checked state of this button.</p> |
| * |
| * @param checked true to check the button, false to uncheck it |
| */ |
| @Override |
| public void setChecked(boolean checked) { |
| if (mChecked != checked) { |
| mCheckedFromResource = false; |
| mChecked = checked; |
| refreshDrawableState(); |
| notifyViewAccessibilityStateChangedIfNeeded( |
| AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED); |
| |
| // Avoid infinite recursions if setChecked() is called from a listener |
| 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; |
| } |
| } |
| |
| /** |
| * Register a callback to be invoked when the checked state of this button |
| * changes. |
| * |
| * @param listener the callback to call on checked state change |
| */ |
| public void setOnCheckedChangeListener(@Nullable OnCheckedChangeListener listener) { |
| mOnCheckedChangeListener = listener; |
| } |
| |
| /** |
| * Register a callback to be invoked when the checked state of this button |
| * changes. This callback is used for internal purpose only. |
| * |
| * @param listener the callback to call on checked state change |
| * @hide |
| */ |
| void setOnCheckedChangeWidgetListener(OnCheckedChangeListener listener) { |
| mOnCheckedChangeWidgetListener = listener; |
| } |
| |
| /** |
| * Interface definition for a callback to be invoked when the checked state |
| * of a compound button changed. |
| */ |
| public static interface OnCheckedChangeListener { |
| /** |
| * Called when the checked state of a compound button has changed. |
| * |
| * @param buttonView The compound button view whose state has changed. |
| * @param isChecked The new checked state of buttonView. |
| */ |
| void onCheckedChanged(CompoundButton buttonView, boolean isChecked); |
| } |
| |
| /** |
| * Sets a drawable as the compound button image given its resource |
| * identifier. |
| * |
| * @param resId the resource identifier of the drawable |
| * @attr ref android.R.styleable#CompoundButton_button |
| */ |
| public void setButtonDrawable(@DrawableRes int resId) { |
| final Drawable d; |
| if (resId != 0) { |
| d = getContext().getDrawable(resId); |
| } else { |
| d = null; |
| } |
| setButtonDrawable(d); |
| } |
| |
| /** |
| * Sets a drawable as the compound button image. |
| * |
| * @param drawable the drawable to set |
| * @attr ref android.R.styleable#CompoundButton_button |
| */ |
| 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(); |
| } |
| } |
| } |
| |
| /** |
| * @hide |
| */ |
| @Override |
| public void onResolveDrawables(@ResolvedLayoutDir int layoutDirection) { |
| super.onResolveDrawables(layoutDirection); |
| if (mButtonDrawable != null) { |
| mButtonDrawable.setLayoutDirection(layoutDirection); |
| } |
| } |
| |
| /** |
| * @return the drawable used as the compound button image |
| * @see #setButtonDrawable(Drawable) |
| * @see #setButtonDrawable(int) |
| */ |
| @InspectableProperty(name = "button") |
| @Nullable |
| public Drawable getButtonDrawable() { |
| return mButtonDrawable; |
| } |
| |
| /** |
| * Applies a tint to the button drawable. Does not modify the current tint |
| * mode, which is {@link PorterDuff.Mode#SRC_IN} by default. |
| * <p> |
| * Subsequent calls to {@link #setButtonDrawable(Drawable)} will |
| * automatically mutate the drawable and apply the specified tint and tint |
| * mode using |
| * {@link Drawable#setTintList(ColorStateList)}. |
| * |
| * @param tint the tint to apply, may be {@code null} to clear tint |
| * |
| * @attr ref android.R.styleable#CompoundButton_buttonTint |
| * @see #setButtonTintList(ColorStateList) |
| * @see Drawable#setTintList(ColorStateList) |
| */ |
| public void setButtonTintList(@Nullable ColorStateList tint) { |
| mButtonTintList = tint; |
| mHasButtonTint = true; |
| |
| applyButtonTint(); |
| } |
| |
| /** |
| * @return the tint applied to the button drawable |
| * @attr ref android.R.styleable#CompoundButton_buttonTint |
| * @see #setButtonTintList(ColorStateList) |
| */ |
| @InspectableProperty(name = "buttonTint") |
| @Nullable |
| public ColorStateList getButtonTintList() { |
| return mButtonTintList; |
| } |
| |
| /** |
| * Specifies the blending mode used to apply the tint specified by |
| * {@link #setButtonTintList(ColorStateList)}} to the button drawable. The |
| * default mode is {@link PorterDuff.Mode#SRC_IN}. |
| * |
| * @param tintMode the blending mode used to apply the tint, may be |
| * {@code null} to clear tint |
| * @attr ref android.R.styleable#CompoundButton_buttonTintMode |
| * @see #getButtonTintMode() |
| * @see Drawable#setTintMode(PorterDuff.Mode) |
| */ |
| public void setButtonTintMode(@Nullable PorterDuff.Mode tintMode) { |
| setButtonTintBlendMode(tintMode != null ? BlendMode.fromValue(tintMode.nativeInt) : null); |
| } |
| |
| /** |
| * Specifies the blending mode used to apply the tint specified by |
| * {@link #setButtonTintList(ColorStateList)}} to the button drawable. The |
| * default mode is {@link PorterDuff.Mode#SRC_IN}. |
| * |
| * @param tintMode the blending mode used to apply the tint, may be |
| * {@code null} to clear tint |
| * @attr ref android.R.styleable#CompoundButton_buttonTintMode |
| * @see #getButtonTintMode() |
| * @see Drawable#setTintBlendMode(BlendMode) |
| */ |
| public void setButtonTintBlendMode(@Nullable BlendMode tintMode) { |
| mButtonBlendMode = tintMode; |
| mHasButtonBlendMode = true; |
| |
| applyButtonTint(); |
| } |
| |
| /** |
| * @return the blending mode used to apply the tint to the button drawable |
| * @attr ref android.R.styleable#CompoundButton_buttonTintMode |
| * @see #setButtonTintMode(PorterDuff.Mode) |
| */ |
| @InspectableProperty(name = "buttonTintMode") |
| @Nullable |
| public PorterDuff.Mode getButtonTintMode() { |
| return mButtonBlendMode != null ? BlendMode.blendModeToPorterDuffMode(mButtonBlendMode) : |
| null; |
| } |
| |
| /** |
| * @return the blending mode used to apply the tint to the button drawable |
| * @attr ref android.R.styleable#CompoundButton_buttonTintMode |
| * @see #setButtonTintBlendMode(BlendMode) |
| */ |
| @InspectableProperty(name = "buttonBlendMode", |
| attributeId = R.styleable.CompoundButton_buttonTintMode) |
| @Nullable |
| public BlendMode getButtonTintBlendMode() { |
| return mButtonBlendMode; |
| } |
| |
| private void applyButtonTint() { |
| if (mButtonDrawable != null && (mHasButtonTint || mHasButtonBlendMode)) { |
| mButtonDrawable = mButtonDrawable.mutate(); |
| |
| if (mHasButtonTint) { |
| mButtonDrawable.setTintList(mButtonTintList); |
| } |
| |
| if (mHasButtonBlendMode) { |
| mButtonDrawable.setTintBlendMode(mButtonBlendMode); |
| } |
| |
| // The drawable (or one of its children) may not have been |
| // stateful before applying the tint, so let's try again. |
| if (mButtonDrawable.isStateful()) { |
| mButtonDrawable.setState(getDrawableState()); |
| } |
| } |
| } |
| |
| @Override |
| public CharSequence getAccessibilityClassName() { |
| return CompoundButton.class.getName(); |
| } |
| |
| /** @hide */ |
| @Override |
| public void onInitializeAccessibilityEventInternal(AccessibilityEvent event) { |
| super.onInitializeAccessibilityEventInternal(event); |
| event.setChecked(mChecked); |
| } |
| |
| /** @hide */ |
| @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; |
| } |
| |
| /** |
| * @hide |
| */ |
| @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; |
| |
| /** |
| * Constructor called from {@link CompoundButton#onSaveInstanceState()} |
| */ |
| SavedState(Parcelable superState) { |
| super(superState); |
| } |
| |
| /** |
| * Constructor called from {@link #CREATOR} |
| */ |
| 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 @android.annotation.NonNull 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(); |
| } |
| |
| /** @hide */ |
| @Override |
| protected void encodeProperties(@NonNull ViewHierarchyEncoder stream) { |
| super.encodeProperties(stream); |
| stream.addProperty("checked", isChecked()); |
| } |
| |
| |
| /** @hide */ |
| @Override |
| protected void onProvideStructure(@NonNull ViewStructure structure, |
| @ViewStructureType int viewFor, int flags) { |
| super.onProvideStructure(structure, viewFor, flags); |
| |
| if (viewFor == VIEW_STRUCTURE_FOR_AUTOFILL) { |
| 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; |
| } |
| } |