| /* |
| * Copyright (C) 2020 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 com.android.systemui.navigationbar.buttons; |
| |
| import android.annotation.DrawableRes; |
| import android.annotation.IdRes; |
| import android.annotation.NonNull; |
| import android.content.Context; |
| import android.view.View; |
| |
| /** |
| * Simple contextual button that is added to the {@link ContextualButtonGroup}. Extend if need extra |
| * functionality. |
| */ |
| public class ContextualButton extends ButtonDispatcher { |
| |
| private ContextButtonListener mListener; |
| private ContextualButtonGroup mGroup; |
| |
| protected final Context mLightContext; |
| protected final @DrawableRes int mIconResId; |
| |
| /** |
| * Create a contextual button that will use a {@link KeyButtonView} and |
| * {@link KeyButtonDrawable} get and show the button from xml to its icon drawable. |
| * @param buttonResId the button view from xml layout |
| * @param iconResId icon resource to be used |
| */ |
| public ContextualButton(@IdRes int buttonResId, Context lightContext, |
| @DrawableRes int iconResId) { |
| super(buttonResId); |
| mLightContext = lightContext; |
| mIconResId = iconResId; |
| } |
| |
| /** |
| * Reload the drawable from resource id, should reapply the previous dark intensity. |
| */ |
| public void updateIcon(int lightIconColor, int darkIconColor) { |
| if (mIconResId == 0) { |
| return; |
| } |
| final KeyButtonDrawable currentDrawable = getImageDrawable(); |
| KeyButtonDrawable drawable = getNewDrawable(lightIconColor, darkIconColor); |
| if (currentDrawable != null) { |
| drawable.setDarkIntensity(currentDrawable.getDarkIntensity()); |
| } |
| setImageDrawable(drawable); |
| } |
| |
| @Override |
| public void setVisibility(int visibility) { |
| super.setVisibility(visibility); |
| |
| // Stop any active animations if hidden |
| final KeyButtonDrawable currentDrawable = getImageDrawable(); |
| if (visibility != View.VISIBLE && currentDrawable != null && currentDrawable.canAnimate()) { |
| currentDrawable.clearAnimationCallbacks(); |
| currentDrawable.resetAnimation(); |
| } |
| |
| if (mListener != null) { |
| mListener.onVisibilityChanged(this, visibility == View.VISIBLE); |
| } |
| } |
| |
| public void setListener(ContextButtonListener listener) { |
| mListener = listener; |
| } |
| |
| /** |
| * Show this button based on its priority compared to other buttons in the group. If not |
| * attached to a group it will set its own visibility to be visible. |
| * @return if visible |
| */ |
| public boolean show() { |
| if (mGroup == null) { |
| setVisibility(View.VISIBLE); |
| return true; |
| } |
| return mGroup.setButtonVisibility(getId(), true /* visible */) == View.VISIBLE; |
| } |
| |
| /** |
| * Hide this button. |
| * @return if visible |
| */ |
| public boolean hide() { |
| if (mGroup == null) { |
| setVisibility(View.INVISIBLE); |
| return false; |
| } |
| return mGroup.setButtonVisibility(getId(), false /* visible */) != View.VISIBLE; |
| } |
| |
| /** |
| * Called when this button was added to the group. Keep a reference to the group to show based |
| * on priority compared to other buttons. |
| * @param group the holder of all the buttons |
| */ |
| void attachToGroup(@NonNull ContextualButtonGroup group) { |
| mGroup = group; |
| } |
| |
| protected KeyButtonDrawable getNewDrawable(int lightIconColor, int darkIconColor) { |
| return KeyButtonDrawable.create(mLightContext, lightIconColor, darkIconColor, mIconResId, |
| false /* shadow */, null /* ovalBackground */); |
| } |
| |
| public interface ContextButtonListener { |
| void onVisibilityChanged(ContextualButton button, boolean visible); |
| } |
| } |