| /* |
| * 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.Canvas; |
| import android.graphics.PorterDuff; |
| import android.graphics.drawable.Drawable; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.util.AttributeSet; |
| import android.view.Gravity; |
| import android.view.RemotableViewMethod; |
| import android.view.ViewDebug; |
| import android.view.ViewHierarchyEncoder; |
| import android.view.accessibility.AccessibilityEvent; |
| import android.view.accessibility.AccessibilityNodeInfo; |
| |
| import com.android.internal.R; |
| |
| /** |
| * An extension to {@link TextView} that supports the {@link Checkable} |
| * interface and displays. |
| * <p> |
| * This is useful when used in a {@link android.widget.ListView ListView} where |
| * the {@link android.widget.ListView#setChoiceMode(int) setChoiceMode} has |
| * been set to something other than |
| * {@link android.widget.ListView#CHOICE_MODE_NONE CHOICE_MODE_NONE}. |
| * |
| * @attr ref android.R.styleable#CheckedTextView_checked |
| * @attr ref android.R.styleable#CheckedTextView_checkMark |
| */ |
| public class CheckedTextView extends TextView implements Checkable { |
| private boolean mChecked; |
| |
| private int mCheckMarkResource; |
| @UnsupportedAppUsage |
| private Drawable mCheckMarkDrawable; |
| private ColorStateList mCheckMarkTintList = null; |
| private PorterDuff.Mode mCheckMarkTintMode = null; |
| private boolean mHasCheckMarkTint = false; |
| private boolean mHasCheckMarkTintMode = false; |
| |
| private int mBasePadding; |
| private int mCheckMarkWidth; |
| @UnsupportedAppUsage |
| private int mCheckMarkGravity = Gravity.END; |
| |
| private boolean mNeedRequestlayout; |
| |
| private static final int[] CHECKED_STATE_SET = { |
| R.attr.state_checked |
| }; |
| |
| public CheckedTextView(Context context) { |
| this(context, null); |
| } |
| |
| public CheckedTextView(Context context, AttributeSet attrs) { |
| this(context, attrs, R.attr.checkedTextViewStyle); |
| } |
| |
| public CheckedTextView(Context context, AttributeSet attrs, int defStyleAttr) { |
| this(context, attrs, defStyleAttr, 0); |
| } |
| |
| public CheckedTextView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { |
| super(context, attrs, defStyleAttr, defStyleRes); |
| |
| final TypedArray a = context.obtainStyledAttributes( |
| attrs, R.styleable.CheckedTextView, defStyleAttr, defStyleRes); |
| |
| final Drawable d = a.getDrawable(R.styleable.CheckedTextView_checkMark); |
| if (d != null) { |
| setCheckMarkDrawable(d); |
| } |
| |
| if (a.hasValue(R.styleable.CheckedTextView_checkMarkTintMode)) { |
| mCheckMarkTintMode = Drawable.parseTintMode(a.getInt( |
| R.styleable.CheckedTextView_checkMarkTintMode, -1), mCheckMarkTintMode); |
| mHasCheckMarkTintMode = true; |
| } |
| |
| if (a.hasValue(R.styleable.CheckedTextView_checkMarkTint)) { |
| mCheckMarkTintList = a.getColorStateList(R.styleable.CheckedTextView_checkMarkTint); |
| mHasCheckMarkTint = true; |
| } |
| |
| mCheckMarkGravity = a.getInt(R.styleable.CheckedTextView_checkMarkGravity, Gravity.END); |
| |
| final boolean checked = a.getBoolean(R.styleable.CheckedTextView_checked, false); |
| setChecked(checked); |
| |
| a.recycle(); |
| |
| applyCheckMarkTint(); |
| } |
| |
| public void toggle() { |
| setChecked(!mChecked); |
| } |
| |
| @ViewDebug.ExportedProperty |
| public boolean isChecked() { |
| return mChecked; |
| } |
| |
| /** |
| * Sets the checked state of this view. |
| * |
| * @param checked {@code true} set the state to checked, {@code false} to |
| * uncheck |
| */ |
| public void setChecked(boolean checked) { |
| if (mChecked != checked) { |
| mChecked = checked; |
| refreshDrawableState(); |
| notifyViewAccessibilityStateChangedIfNeeded( |
| AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED); |
| } |
| } |
| |
| /** |
| * Sets the check mark to the drawable with the specified resource ID. |
| * <p> |
| * When this view is checked, the drawable's state set will include |
| * {@link android.R.attr#state_checked}. |
| * |
| * @param resId the resource identifier of drawable to use as the check |
| * mark |
| * @attr ref android.R.styleable#CheckedTextView_checkMark |
| * @see #setCheckMarkDrawable(Drawable) |
| * @see #getCheckMarkDrawable() |
| */ |
| public void setCheckMarkDrawable(@DrawableRes int resId) { |
| if (resId != 0 && resId == mCheckMarkResource) { |
| return; |
| } |
| |
| final Drawable d = resId != 0 ? getContext().getDrawable(resId) : null; |
| setCheckMarkDrawableInternal(d, resId); |
| } |
| |
| /** |
| * Set the check mark to the specified drawable. |
| * <p> |
| * When this view is checked, the drawable's state set will include |
| * {@link android.R.attr#state_checked}. |
| * |
| * @param d the drawable to use for the check mark |
| * @attr ref android.R.styleable#CheckedTextView_checkMark |
| * @see #setCheckMarkDrawable(int) |
| * @see #getCheckMarkDrawable() |
| */ |
| public void setCheckMarkDrawable(@Nullable Drawable d) { |
| setCheckMarkDrawableInternal(d, 0); |
| } |
| |
| private void setCheckMarkDrawableInternal(@Nullable Drawable d, @DrawableRes int resId) { |
| if (mCheckMarkDrawable != null) { |
| mCheckMarkDrawable.setCallback(null); |
| unscheduleDrawable(mCheckMarkDrawable); |
| } |
| |
| mNeedRequestlayout = (d != mCheckMarkDrawable); |
| |
| if (d != null) { |
| d.setCallback(this); |
| d.setVisible(getVisibility() == VISIBLE, false); |
| d.setState(CHECKED_STATE_SET); |
| |
| // Record the intrinsic dimensions when in "checked" state. |
| setMinHeight(d.getIntrinsicHeight()); |
| mCheckMarkWidth = d.getIntrinsicWidth(); |
| |
| d.setState(getDrawableState()); |
| } else { |
| mCheckMarkWidth = 0; |
| } |
| |
| mCheckMarkDrawable = d; |
| mCheckMarkResource = resId; |
| |
| applyCheckMarkTint(); |
| |
| // Do padding resolution. This will call internalSetPadding() and do a |
| // requestLayout() if needed. |
| resolvePadding(); |
| } |
| |
| /** |
| * Applies a tint to the check mark drawable. Does not modify the |
| * current tint mode, which is {@link PorterDuff.Mode#SRC_IN} by default. |
| * <p> |
| * Subsequent calls to {@link #setCheckMarkDrawable(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#CheckedTextView_checkMarkTint |
| * @see #getCheckMarkTintList() |
| * @see Drawable#setTintList(ColorStateList) |
| */ |
| public void setCheckMarkTintList(@Nullable ColorStateList tint) { |
| mCheckMarkTintList = tint; |
| mHasCheckMarkTint = true; |
| |
| applyCheckMarkTint(); |
| } |
| |
| /** |
| * Returns the tint applied to the check mark drawable, if specified. |
| * |
| * @return the tint applied to the check mark drawable |
| * @attr ref android.R.styleable#CheckedTextView_checkMarkTint |
| * @see #setCheckMarkTintList(ColorStateList) |
| */ |
| @Nullable |
| public ColorStateList getCheckMarkTintList() { |
| return mCheckMarkTintList; |
| } |
| |
| /** |
| * Specifies the blending mode used to apply the tint specified by |
| * {@link #setCheckMarkTintList(ColorStateList)} to the check mark |
| * 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#CheckedTextView_checkMarkTintMode |
| * @see #setCheckMarkTintList(ColorStateList) |
| * @see Drawable#setTintMode(PorterDuff.Mode) |
| */ |
| public void setCheckMarkTintMode(@Nullable PorterDuff.Mode tintMode) { |
| mCheckMarkTintMode = tintMode; |
| mHasCheckMarkTintMode = true; |
| |
| applyCheckMarkTint(); |
| } |
| |
| /** |
| * Returns the blending mode used to apply the tint to the check mark |
| * drawable, if specified. |
| * |
| * @return the blending mode used to apply the tint to the check mark |
| * drawable |
| * @attr ref android.R.styleable#CheckedTextView_checkMarkTintMode |
| * @see #setCheckMarkTintMode(PorterDuff.Mode) |
| */ |
| @Nullable |
| public PorterDuff.Mode getCheckMarkTintMode() { |
| return mCheckMarkTintMode; |
| } |
| |
| private void applyCheckMarkTint() { |
| if (mCheckMarkDrawable != null && (mHasCheckMarkTint || mHasCheckMarkTintMode)) { |
| mCheckMarkDrawable = mCheckMarkDrawable.mutate(); |
| |
| if (mHasCheckMarkTint) { |
| mCheckMarkDrawable.setTintList(mCheckMarkTintList); |
| } |
| |
| if (mHasCheckMarkTintMode) { |
| mCheckMarkDrawable.setTintMode(mCheckMarkTintMode); |
| } |
| |
| // The drawable (or one of its children) may not have been |
| // stateful before applying the tint, so let's try again. |
| if (mCheckMarkDrawable.isStateful()) { |
| mCheckMarkDrawable.setState(getDrawableState()); |
| } |
| } |
| } |
| |
| @RemotableViewMethod |
| @Override |
| public void setVisibility(int visibility) { |
| super.setVisibility(visibility); |
| |
| if (mCheckMarkDrawable != null) { |
| mCheckMarkDrawable.setVisible(visibility == VISIBLE, false); |
| } |
| } |
| |
| @Override |
| public void jumpDrawablesToCurrentState() { |
| super.jumpDrawablesToCurrentState(); |
| |
| if (mCheckMarkDrawable != null) { |
| mCheckMarkDrawable.jumpToCurrentState(); |
| } |
| } |
| |
| @Override |
| protected boolean verifyDrawable(@NonNull Drawable who) { |
| return who == mCheckMarkDrawable || super.verifyDrawable(who); |
| } |
| |
| /** |
| * Gets the checkmark drawable |
| * |
| * @return The drawable use to represent the checkmark, if any. |
| * |
| * @see #setCheckMarkDrawable(Drawable) |
| * @see #setCheckMarkDrawable(int) |
| * |
| * @attr ref android.R.styleable#CheckedTextView_checkMark |
| */ |
| public Drawable getCheckMarkDrawable() { |
| return mCheckMarkDrawable; |
| } |
| |
| /** |
| * @hide |
| */ |
| @Override |
| protected void internalSetPadding(int left, int top, int right, int bottom) { |
| super.internalSetPadding(left, top, right, bottom); |
| setBasePadding(isCheckMarkAtStart()); |
| } |
| |
| @Override |
| public void onRtlPropertiesChanged(int layoutDirection) { |
| super.onRtlPropertiesChanged(layoutDirection); |
| updatePadding(); |
| } |
| |
| private void updatePadding() { |
| resetPaddingToInitialValues(); |
| int newPadding = (mCheckMarkDrawable != null) ? |
| mCheckMarkWidth + mBasePadding : mBasePadding; |
| if (isCheckMarkAtStart()) { |
| mNeedRequestlayout |= (mPaddingLeft != newPadding); |
| mPaddingLeft = newPadding; |
| } else { |
| mNeedRequestlayout |= (mPaddingRight != newPadding); |
| mPaddingRight = newPadding; |
| } |
| if (mNeedRequestlayout) { |
| requestLayout(); |
| mNeedRequestlayout = false; |
| } |
| } |
| |
| private void setBasePadding(boolean checkmarkAtStart) { |
| if (checkmarkAtStart) { |
| mBasePadding = mPaddingLeft; |
| } else { |
| mBasePadding = mPaddingRight; |
| } |
| } |
| |
| private boolean isCheckMarkAtStart() { |
| final int gravity = Gravity.getAbsoluteGravity(mCheckMarkGravity, getLayoutDirection()); |
| final int hgrav = gravity & Gravity.HORIZONTAL_GRAVITY_MASK; |
| return hgrav == Gravity.LEFT; |
| } |
| |
| @Override |
| protected void onDraw(Canvas canvas) { |
| super.onDraw(canvas); |
| |
| final Drawable checkMarkDrawable = mCheckMarkDrawable; |
| if (checkMarkDrawable != null) { |
| final int verticalGravity = getGravity() & Gravity.VERTICAL_GRAVITY_MASK; |
| final int height = checkMarkDrawable.getIntrinsicHeight(); |
| |
| int y = 0; |
| |
| switch (verticalGravity) { |
| case Gravity.BOTTOM: |
| y = getHeight() - height; |
| break; |
| case Gravity.CENTER_VERTICAL: |
| y = (getHeight() - height) / 2; |
| break; |
| } |
| |
| final boolean checkMarkAtStart = isCheckMarkAtStart(); |
| final int width = getWidth(); |
| final int top = y; |
| final int bottom = top + height; |
| final int left; |
| final int right; |
| if (checkMarkAtStart) { |
| left = mBasePadding; |
| right = left + mCheckMarkWidth; |
| } else { |
| right = width - mBasePadding; |
| left = right - mCheckMarkWidth; |
| } |
| checkMarkDrawable.setBounds(mScrollX + left, top, mScrollX + right, bottom); |
| checkMarkDrawable.draw(canvas); |
| |
| final Drawable background = getBackground(); |
| if (background != null) { |
| background.setHotspotBounds(mScrollX + left, top, mScrollX + right, bottom); |
| } |
| } |
| } |
| |
| @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 checkMarkDrawable = mCheckMarkDrawable; |
| if (checkMarkDrawable != null && checkMarkDrawable.isStateful() |
| && checkMarkDrawable.setState(getDrawableState())) { |
| invalidateDrawable(checkMarkDrawable); |
| } |
| } |
| |
| @Override |
| public void drawableHotspotChanged(float x, float y) { |
| super.drawableHotspotChanged(x, y); |
| |
| if (mCheckMarkDrawable != null) { |
| mCheckMarkDrawable.setHotspot(x, y); |
| } |
| } |
| |
| @Override |
| public CharSequence getAccessibilityClassName() { |
| return CheckedTextView.class.getName(); |
| } |
| |
| static class SavedState extends BaseSavedState { |
| boolean checked; |
| |
| /** |
| * Constructor called from {@link CheckedTextView#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 "CheckedTextView.SavedState{" |
| + Integer.toHexString(System.identityHashCode(this)) |
| + " checked=" + checked + "}"; |
| } |
| |
| public static final Parcelable.Creator<SavedState> CREATOR |
| = new Parcelable.Creator<SavedState>() { |
| public SavedState createFromParcel(Parcel in) { |
| return new SavedState(in); |
| } |
| |
| 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 |
| 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); |
| } |
| |
| /** @hide */ |
| @Override |
| protected void encodeProperties(@NonNull ViewHierarchyEncoder stream) { |
| super.encodeProperties(stream); |
| stream.addProperty("text:checked", isChecked()); |
| } |
| } |