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/*
* Copyright (C) 2018 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.service.autofill;
import static android.view.autofill.Helper.sDebug;
import static android.view.autofill.Helper.sVerbose;
import android.annotation.IdRes;
import android.annotation.NonNull;
import android.os.Parcel;
import android.os.Parcelable;
import android.util.Slog;
import android.util.SparseIntArray;
import android.view.View;
import android.view.View.Visibility;
import android.view.ViewGroup;
import android.widget.RemoteViews;
import com.android.internal.util.Preconditions;
/**
* Action used to change the visibility of other child view in a {@link CustomDescription}
* {@link RemoteViews presentation template}.
*
* <p>See {@link CustomDescription.Builder#addOnClickAction(int, OnClickAction)} for more details.
*/
public final class VisibilitySetterAction extends InternalOnClickAction implements
OnClickAction, Parcelable {
private static final String TAG = "VisibilitySetterAction";
@NonNull private final SparseIntArray mVisibilities;
private VisibilitySetterAction(@NonNull Builder builder) {
mVisibilities = builder.mVisibilities;
}
/** @hide */
@Override
public void onClick(@NonNull ViewGroup rootView) {
for (int i = 0; i < mVisibilities.size(); i++) {
final int id = mVisibilities.keyAt(i);
final View child = rootView.findViewById(id);
if (child == null) {
Slog.w(TAG, "Skipping view id " + id + " because it's not found on " + rootView);
continue;
}
final int visibility = mVisibilities.valueAt(i);
if (sVerbose) {
Slog.v(TAG, "Changing visibility of view " + child + " from "
+ child.getVisibility() + " to " + visibility);
}
child.setVisibility(visibility);
}
}
/**
* Builder for {@link VisibilitySetterAction} objects.
*/
public static final class Builder {
private final SparseIntArray mVisibilities = new SparseIntArray();
private boolean mDestroyed;
/**
* Creates a new builder for an action that change the visibility of one child view.
*
* @param id view resource id of the children view.
* @param visibility one of {@link View#VISIBLE}, {@link View#INVISIBLE}, or
* {@link View#GONE}.
* @throws IllegalArgumentException if visibility is not one of {@link View#VISIBLE},
* {@link View#INVISIBLE}, or {@link View#GONE}.
*/
public Builder(@IdRes int id, @Visibility int visibility) {
setVisibility(id, visibility);
}
/**
* Sets the action to changes the visibility of a child view.
*
* @param id view resource id of the children view.
* @param visibility one of {@link View#VISIBLE}, {@link View#INVISIBLE}, or
* {@link View#GONE}.
* @throws IllegalArgumentException if visibility is not one of {@link View#VISIBLE},
* {@link View#INVISIBLE}, or {@link View#GONE}.
*/
@NonNull
public Builder setVisibility(@IdRes int id, @Visibility int visibility) {
throwIfDestroyed();
switch (visibility) {
case View.VISIBLE:
case View.INVISIBLE:
case View.GONE:
mVisibilities.put(id, visibility);
return this;
}
throw new IllegalArgumentException("Invalid visibility: " + visibility);
}
/**
* Creates a new {@link VisibilitySetterAction} instance.
*/
@NonNull
public VisibilitySetterAction build() {
throwIfDestroyed();
mDestroyed = true;
return new VisibilitySetterAction(this);
}
private void throwIfDestroyed() {
Preconditions.checkState(!mDestroyed, "Already called build()");
}
}
/////////////////////////////////////
// Object "contract" methods. //
/////////////////////////////////////
@Override
public String toString() {
if (!sDebug) return super.toString();
return "VisibilitySetterAction: [" + mVisibilities + "]";
}
/////////////////////////////////////
// Parcelable "contract" methods. //
/////////////////////////////////////
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel parcel, int flags) {
parcel.writeSparseIntArray(mVisibilities);
}
public static final @android.annotation.NonNull Parcelable.Creator<VisibilitySetterAction> CREATOR =
new Parcelable.Creator<VisibilitySetterAction>() {
@NonNull
@Override
public VisibilitySetterAction createFromParcel(Parcel parcel) {
// Always go through the builder to ensure the data ingested by
// the system obeys the contract of the builder to avoid attacks
final SparseIntArray visibilities = parcel.readSparseIntArray();
Builder builder = null;
for (int i = 0; i < visibilities.size(); i++) {
final int id = visibilities.keyAt(i);
final int visibility = visibilities.valueAt(i);
if (builder == null) {
builder = new Builder(id, visibility);
} else {
builder.setVisibility(id, visibility);
}
}
return builder == null ? null : builder.build();
}
@NonNull
@Override
public VisibilitySetterAction[] newArray(int size) {
return new VisibilitySetterAction[size];
}
};
}
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