| /* |
| * Copyright (C) 2014 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.statusbar; |
| |
| import android.content.Context; |
| import android.graphics.Canvas; |
| import android.graphics.Outline; |
| import android.graphics.Rect; |
| import android.graphics.drawable.Drawable; |
| import android.graphics.drawable.InsetDrawable; |
| import android.util.AttributeSet; |
| import android.view.View; |
| import android.widget.FrameLayout; |
| |
| /** |
| * An abstract view for expandable views. |
| */ |
| public abstract class ExpandableView extends FrameLayout { |
| |
| private OnHeightChangedListener mOnHeightChangedListener; |
| protected int mActualHeight; |
| protected int mClipTopAmount; |
| private boolean mActualHeightInitialized; |
| |
| public ExpandableView(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| } |
| |
| @Override |
| protected void onLayout(boolean changed, int left, int top, int right, int bottom) { |
| super.onLayout(changed, left, top, right, bottom); |
| if (!mActualHeightInitialized && mActualHeight == 0) { |
| mActualHeight = getHeight(); |
| } |
| mActualHeightInitialized = true; |
| } |
| |
| /** |
| * Sets the actual height of this notification. This is different than the laid out |
| * {@link View#getHeight()}, as we want to avoid layouting during scrolling and expanding. |
| */ |
| public void setActualHeight(int actualHeight) { |
| mActualHeight = actualHeight; |
| if (mOnHeightChangedListener != null) { |
| mOnHeightChangedListener.onHeightChanged(this); |
| } |
| } |
| |
| /** |
| * See {@link #setActualHeight}. |
| * |
| * @return The actual height of this notification. |
| */ |
| public int getActualHeight() { |
| return mActualHeight; |
| } |
| |
| /** |
| * @return The maximum height of this notification. |
| */ |
| public int getMaxHeight() { |
| return getHeight(); |
| } |
| |
| /** |
| * @return The minimum height of this notification. |
| */ |
| public int getMinHeight() { |
| return getHeight(); |
| } |
| |
| /** |
| * Sets the amount this view should be clipped from the top. This is used when an expanded |
| * notification is scrolling in the top or bottom stack. |
| * |
| * @param clipTopAmount The amount of pixels this view should be clipped from top. |
| */ |
| public void setClipTopAmount(int clipTopAmount) { |
| mClipTopAmount = clipTopAmount; |
| } |
| |
| public void setOnHeightChangedListener(OnHeightChangedListener listener) { |
| mOnHeightChangedListener = listener; |
| } |
| |
| /** |
| * @return Whether we can expand this views content. |
| */ |
| public boolean isContentExpandable() { |
| return false; |
| } |
| |
| /** |
| * A listener notifying when {@link #getActualHeight} changes. |
| */ |
| public interface OnHeightChangedListener { |
| void onHeightChanged(ExpandableView view); |
| } |
| } |