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173 lines
4.4 KiB
Java
173 lines
4.4 KiB
Java
package org.tasks.tags;
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import static org.tasks.preferences.ResourceResolver.getData;
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import android.content.Context;
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import android.graphics.drawable.Drawable;
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import android.os.Parcel;
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import android.os.Parcelable;
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import android.util.AttributeSet;
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import android.widget.CompoundButton;
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import androidx.annotation.Nullable;
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import androidx.appcompat.widget.AppCompatCheckBox;
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import androidx.core.content.res.ResourcesCompat;
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import org.tasks.R;
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public class CheckBoxTriStates extends AppCompatCheckBox {
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private int alpha;
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private State state;
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private OnCheckedChangeListener clientListener;
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private final OnCheckedChangeListener privateListener =
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new CompoundButton.OnCheckedChangeListener() {
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public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
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switch (state) {
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case PARTIALLY_CHECKED:
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case UNCHECKED:
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setState(State.CHECKED, true);
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break;
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case CHECKED:
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setState(State.UNCHECKED, true);
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break;
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}
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}
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};
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public CheckBoxTriStates(Context context) {
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super(context);
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init();
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}
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public CheckBoxTriStates(Context context, AttributeSet attrs) {
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super(context, attrs);
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init();
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}
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public CheckBoxTriStates(Context context, AttributeSet attrs, int defStyleAttr) {
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super(context, attrs, defStyleAttr);
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init();
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}
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public void setState(State state, boolean notify) {
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if (this.state != state) {
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this.state = state;
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if (notify && this.clientListener != null) {
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this.clientListener.onCheckedChanged(this, this.isChecked());
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}
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}
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updateBtn();
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}
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@Override
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public void setOnCheckedChangeListener(@Nullable OnCheckedChangeListener listener) {
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if (this.privateListener != listener) {
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this.clientListener = listener;
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}
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super.setOnCheckedChangeListener(privateListener);
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}
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@Override
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public Parcelable onSaveInstanceState() {
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Parcelable superState = super.onSaveInstanceState();
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SavedState ss = new SavedState(superState);
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ss.state = state.ordinal();
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return ss;
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}
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@Override
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public void onRestoreInstanceState(Parcelable state) {
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SavedState ss = (SavedState) state;
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super.onRestoreInstanceState(ss.getSuperState());
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this.state = State.values()[ss.state];
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updateBtn();
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requestLayout();
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}
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private void init() {
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alpha = (int) (255 * ResourcesCompat.getFloat(getResources(), R.dimen.alpha_secondary));
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setState(State.UNCHECKED, false);
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setOnCheckedChangeListener(this.privateListener);
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}
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private void updateBtn() {
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int btnDrawable;
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int alpha = 255;
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switch (state) {
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case PARTIALLY_CHECKED:
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btnDrawable = R.drawable.ic_indeterminate_check_box_24px;
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break;
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case CHECKED:
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btnDrawable = R.drawable.ic_outline_check_box_24px;
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break;
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default:
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btnDrawable = R.drawable.ic_outline_check_box_outline_blank_24px;
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alpha = this.alpha;
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break;
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}
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Drawable original = getContext().getDrawable(btnDrawable);
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Drawable drawable;
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int color = state == State.UNCHECKED
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? getContext().getColor(R.color.icon_tint)
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: getData(getContext(), androidx.appcompat.R.attr.colorAccent);
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drawable = original.mutate();
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drawable.setTint(color);
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drawable.setAlpha(alpha);
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setButtonDrawable(drawable);
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}
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public enum State {
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PARTIALLY_CHECKED,
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CHECKED,
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UNCHECKED
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}
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static class SavedState extends BaseSavedState {
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public static final Parcelable.Creator<SavedState> CREATOR =
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new Parcelable.Creator<>() {
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@Override
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public SavedState createFromParcel(Parcel in) {
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return new SavedState(in);
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}
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@Override
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public SavedState[] newArray(int size) {
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return new SavedState[size];
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}
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};
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int state;
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SavedState(Parcelable superState) {
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super(superState);
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}
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private SavedState(Parcel in) {
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super(in);
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state = in.readInt();
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}
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@Override
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public void writeToParcel(Parcel out, int flags) {
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super.writeToParcel(out, flags);
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out.writeValue(state);
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}
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@Override
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public String toString() {
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return "CheckboxTriState.SavedState{"
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+ Integer.toHexString(System.identityHashCode(this))
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+ " state="
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+ state
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+ "}";
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}
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}
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}
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