| /* |
| * 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.view; |
| |
| import android.annotation.IntDef; |
| import android.annotation.Nullable; |
| import android.view.InsetsState.InternalInsetType; |
| import android.view.SurfaceControl.Transaction; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.util.function.Supplier; |
| |
| /** |
| * Controls the visibility and animations of a single window insets source. |
| * @hide |
| */ |
| public class InsetsSourceConsumer { |
| |
| @Retention(RetentionPolicy.SOURCE) |
| @IntDef(value = {ShowResult.SHOW_IMMEDIATELY, ShowResult.SHOW_DELAYED, ShowResult.SHOW_FAILED}) |
| @interface ShowResult { |
| /** |
| * Window type is ready to be shown, will be shown immidiately. |
| */ |
| int SHOW_IMMEDIATELY = 0; |
| /** |
| * Result will be delayed. Window needs to be prepared or request is not from controller. |
| * Request will be delegated to controller and may or may not be shown. |
| */ |
| int SHOW_DELAYED = 1; |
| /** |
| * Window will not be shown because one of the conditions couldn't be met. |
| * (e.g. in IME's case, when no editor is focused.) |
| */ |
| int SHOW_FAILED = 2; |
| } |
| |
| protected final InsetsController mController; |
| protected boolean mVisible; |
| private final Supplier<Transaction> mTransactionSupplier; |
| private final @InternalInsetType int mType; |
| private final InsetsState mState; |
| private @Nullable InsetsSourceControl mSourceControl; |
| |
| public InsetsSourceConsumer(@InternalInsetType int type, InsetsState state, |
| Supplier<Transaction> transactionSupplier, InsetsController controller) { |
| mType = type; |
| mState = state; |
| mTransactionSupplier = transactionSupplier; |
| mController = controller; |
| mVisible = InsetsState.getDefaultVisibility(type); |
| } |
| |
| public void setControl(@Nullable InsetsSourceControl control) { |
| if (mSourceControl == control) { |
| return; |
| } |
| mSourceControl = control; |
| applyHiddenToControl(); |
| if (applyLocalVisibilityOverride()) { |
| mController.notifyVisibilityChanged(); |
| } |
| } |
| |
| @VisibleForTesting |
| public InsetsSourceControl getControl() { |
| return mSourceControl; |
| } |
| |
| int getType() { |
| return mType; |
| } |
| |
| @VisibleForTesting |
| public void show() { |
| setVisible(true); |
| } |
| |
| @VisibleForTesting |
| public void hide() { |
| setVisible(false); |
| } |
| |
| /** |
| * Called when current window gains focus |
| */ |
| public void onWindowFocusGained() {} |
| |
| /** |
| * Called when current window loses focus. |
| */ |
| public void onWindowFocusLost() {} |
| |
| boolean applyLocalVisibilityOverride() { |
| |
| // If we don't have control, we are not able to change the visibility. |
| if (mSourceControl == null) { |
| return false; |
| } |
| if (mState.getSource(mType).isVisible() == mVisible) { |
| return false; |
| } |
| mState.getSource(mType).setVisible(mVisible); |
| return true; |
| } |
| |
| @VisibleForTesting |
| public boolean isVisible() { |
| return mVisible; |
| } |
| |
| /** |
| * Request to show current window type. |
| * |
| * @param fromController {@code true} if request is coming from controller. |
| * (e.g. in IME case, controller is |
| * {@link android.inputmethodservice.InputMethodService}). |
| * @return @see {@link ShowResult}. |
| */ |
| @ShowResult int requestShow(boolean fromController) { |
| return ShowResult.SHOW_IMMEDIATELY; |
| } |
| |
| /** |
| * Notify listeners that window is now hidden. |
| */ |
| void notifyHidden() { |
| // no-op for types that always return ShowResult#SHOW_IMMEDIATELY. |
| } |
| |
| private void setVisible(boolean visible) { |
| if (mVisible == visible) { |
| return; |
| } |
| mVisible = visible; |
| applyLocalVisibilityOverride(); |
| mController.notifyVisibilityChanged(); |
| } |
| |
| private void applyHiddenToControl() { |
| if (mSourceControl == null) { |
| return; |
| } |
| |
| final Transaction t = mTransactionSupplier.get(); |
| if (mVisible) { |
| t.show(mSourceControl.getLeash()); |
| } else { |
| t.hide(mSourceControl.getLeash()); |
| } |
| t.apply(); |
| } |
| } |