core/java/android/view/contentcapture/ContentCaptureContext.java - platform/frameworks/base - Gitiles

 /*
  * 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.contentcapture;

 import android.annotation.IntDef;
 import android.annotation.NonNull;
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
 import android.app.TaskInfo;
 import android.content.ComponentName;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.view.View;

 import com.android.internal.util.Preconditions;

 import java.io.PrintWriter;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;

 /**
  * Context associated with a {@link ContentCaptureSession}.
  */
 public final class ContentCaptureContext implements Parcelable {

     /*
      * IMPLEMENTATION NOTICE:
      *
      * This object contains both the info that's explicitly added by apps (hence it's public), but
      * it also contains info injected by the server (and are accessible through @SystemApi methods).
      */

     /**
      * Flag used to indicate that the app explicitly disabled content capture for the activity
      * (using
      * {@link android.view.contentcapture.ContentCaptureManager#setContentCaptureEnabled(boolean)}),
      * in which case the service will just receive activity-level events.
      *
      * @hide
      */
     @SystemApi
     public static final int FLAG_DISABLED_BY_APP = 0x1;

     /**
      * Flag used to indicate that the activity's window is tagged with
      * {@link android.view.Display#FLAG_SECURE}, in which case the service will just receive
      * activity-level events.
      *
      * @hide
      */
     @SystemApi
     public static final int FLAG_DISABLED_BY_FLAG_SECURE = 0x2;

     /** @hide */
     @IntDef(flag = true, prefix = { "FLAG_" }, value = {
             FLAG_DISABLED_BY_APP,
             FLAG_DISABLED_BY_FLAG_SECURE
     })
     @Retention(RetentionPolicy.SOURCE)
     @interface ContextCreationFlags{}

     /**
      * Flag indicating if this object has the app-provided context (which is set on
      * {@link ContentCaptureManager#createContentCaptureSession(ContentCaptureContext)}).
      */
     private final boolean mHasClientContext;

     // Fields below are set by app on Builder
     private final @Nullable Bundle mExtras;
     private final @Nullable Uri mUri;

     // Fields below are set by server when the session starts
     // TODO(b/111276913): create new object for taskId + componentName / reuse on other places
     private final @Nullable ComponentName mComponentName;
     private final int mTaskId;
     private final int mDisplayId;
     private final int mFlags;

     /** @hide */
     public ContentCaptureContext(@Nullable ContentCaptureContext clientContext,
             @NonNull ComponentName componentName, int taskId, int displayId, int flags) {
         if (clientContext != null) {
             mHasClientContext = true;
             mExtras = clientContext.mExtras;
             mUri = clientContext.mUri;
         } else {
             mHasClientContext = false;
             mExtras = null;
             mUri = null;
         }
         mComponentName = Preconditions.checkNotNull(componentName);
         mTaskId = taskId;
         mDisplayId = displayId;
         mFlags = flags;
     }

     private ContentCaptureContext(@NonNull Builder builder) {
         mHasClientContext = true;
         mExtras = builder.mExtras;
         mUri = builder.mUri;

         mComponentName  = null;
         mTaskId = mFlags = mDisplayId = 0;
     }

     /**
      * Gets the (optional) extras set by the app.
      *
      * <p>It can be used to provide vendor-specific data that can be modified and examined.
      *
      * @hide
      */
     @SystemApi
     @Nullable
     public Bundle getExtras() {
         return mExtras;
     }

     /**
      * Gets the (optional) URI set by the app.
      *
      * @hide
      */
     @SystemApi
     @Nullable
     public Uri getUri() {
         return mUri;
     }

     /**
      * Gets the id of the {@link TaskInfo task} associated with this context.
      *
      * @hide
      */
     @SystemApi
     public int getTaskId() {
         return mTaskId;
     }

     /**
      * Gets the activity associated with this context.
      *
      * @hide
      */
     @SystemApi
     public @NonNull ComponentName getActivityComponent() {
         return mComponentName;
     }

     /**
      * Gets the ID of the display associated with this context, as defined by
      * {G android.hardware.display.DisplayManager#getDisplay(int) DisplayManager.getDisplay()}.
      *
      * @hide
      */
     @SystemApi
     public int getDisplayId() {
         return mDisplayId;
     }

     /**
      * Gets the flags associated with this context.
      *
      * @return any combination of {@link #FLAG_DISABLED_BY_FLAG_SECURE} and
      * {@link #FLAG_DISABLED_BY_APP}.
      *
      * @hide
      */
     @SystemApi
      public @ContextCreationFlags int getFlags() {
         return mFlags;
     }

     /**
      * Builder for {@link ContentCaptureContext} objects.
      */
     public static final class Builder {
         private Bundle mExtras;
         private Uri mUri;

         /**
          * Sets extra options associated with this context.
          *
          * <p>It can be used to provide vendor-specific data that can be modified and examined.
          *
          * @param extras extra options.
          * @return this builder.
          */
         @NonNull
         public Builder setExtras(@NonNull Bundle extras) {
             // TODO(b/111276913): check build just once / throw exception / test / document
             mExtras = Preconditions.checkNotNull(extras);
             return this;
         }

         /**
          * Sets the {@link Uri} associated with this context.
          *
          * <p>See {@link View#setContentCaptureSession(ContentCaptureSession)} for an example.
          *
          * @param uri URI associated with this context.
          * @return this builder.
          */
         @NonNull
         public Builder setUri(@NonNull Uri uri) {
             // TODO(b/111276913): check build just once / throw exception / test / document
             mUri = Preconditions.checkNotNull(uri);
             return this;
         }

         /**
          * Builds the {@link ContentCaptureContext}.
          */
         public ContentCaptureContext build() {
             // TODO(b/111276913): check build just once / throw exception / test / document
             // TODO(b/111276913): make sure it at least one property (uri / extras) / test /
             // throw exception / documment
             return new ContentCaptureContext(this);
         }
     }

     /**
      * @hide
      */
     // TODO(b/111276913): dump to proto as well
     public void dump(PrintWriter pw) {
         pw.print("comp="); pw.print(ComponentName.flattenToShortString(mComponentName));
         pw.print(", taskId="); pw.print(mTaskId);
         pw.print(", displayId="); pw.print(mDisplayId);
         if (mFlags > 0) {
             pw.print(", flags="); pw.print(mFlags);
         }
         if (mExtras != null) {
             // NOTE: cannot dump because it could contain PII
             pw.print(", hasExtras");
         }
         if (mUri != null) {
             // NOTE: cannot dump because it could contain PII
             pw.print(", hasUri");
         }
     }

     @Override
     public String toString() {
         final StringBuilder builder = new StringBuilder("Context[act=")
                 .append(ComponentName.flattenToShortString(mComponentName))
                 .append(", taskId=").append(mTaskId)
                 .append(", displayId=").append(mDisplayId)
                 .append(", flags=").append(mFlags);
         if (mExtras != null) {
             // NOTE: cannot print because it could contain PII
             builder.append(", hasExtras");
         }
         if (mUri != null) {
             // NOTE: cannot print because it could contain PII
             builder.append(", hasUri");
         }
         return builder.append(']').toString();
     }

     @Override
     public int describeContents() {
         return 0;
     }

     @Override
     public void writeToParcel(Parcel parcel, int flags) {
         parcel.writeInt(mHasClientContext ? 1 : 0);
         if (mHasClientContext) {
             parcel.writeParcelable(mUri, flags);
             parcel.writeBundle(mExtras);
         }
         parcel.writeParcelable(mComponentName, flags);
         if (mComponentName != null) {
             parcel.writeInt(mTaskId);
             parcel.writeInt(mDisplayId);
             parcel.writeInt(mFlags);
         }
     }

     public static final Parcelable.Creator<ContentCaptureContext> CREATOR =
             new Parcelable.Creator<ContentCaptureContext>() {

         @Override
         public ContentCaptureContext createFromParcel(Parcel parcel) {
             final boolean hasClientContext = parcel.readInt() == 1;

             final ContentCaptureContext clientContext;
             if (hasClientContext) {
                 final Builder builder = new Builder();
                 final Uri uri = parcel.readParcelable(null);
                 final Bundle extras = parcel.readBundle();
                 if (uri != null) builder.setUri(uri);
                 if (extras != null) builder.setExtras(extras);
                 // Must reconstruct the client context using the Builder API
                 clientContext = new ContentCaptureContext(builder);
             } else {
                 clientContext = null;
             }
             final ComponentName componentName = parcel.readParcelable(null);
             if (componentName == null) {
                 // Client-state only
                 return clientContext;
             } else {
                 final int taskId = parcel.readInt();
                 final int displayId = parcel.readInt();
                 final int flags = parcel.readInt();
                         return new ContentCaptureContext(clientContext, componentName, taskId,
                                 displayId, flags);
                     }
         }

         @Override
         public ContentCaptureContext[] newArray(int size) {
             return new ContentCaptureContext[size];
         }
     };
 }
	/*
	* 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.contentcapture;

	import android.annotation.IntDef;
	import android.annotation.NonNull;
	import android.annotation.Nullable;
	import android.annotation.SystemApi;
	import android.app.TaskInfo;
	import android.content.ComponentName;
	import android.net.Uri;
	import android.os.Bundle;
	import android.os.Parcel;
	import android.os.Parcelable;
	import android.view.View;

	import com.android.internal.util.Preconditions;

	import java.io.PrintWriter;
	import java.lang.annotation.Retention;
	import java.lang.annotation.RetentionPolicy;

	/**
	* Context associated with a {@link ContentCaptureSession}.
	*/
	public final class ContentCaptureContext implements Parcelable {

	/*
	* IMPLEMENTATION NOTICE:
	*
	* This object contains both the info that's explicitly added by apps (hence it's public), but
	* it also contains info injected by the server (and are accessible through @SystemApi methods).
	*/

	/**
	* Flag used to indicate that the app explicitly disabled content capture for the activity
	* (using
	* {@link android.view.contentcapture.ContentCaptureManager#setContentCaptureEnabled(boolean)}),
	* in which case the service will just receive activity-level events.
	*
	* @hide
	*/
	@SystemApi
	public static final int FLAG_DISABLED_BY_APP = 0x1;

	/**
	* Flag used to indicate that the activity's window is tagged with
	* {@link android.view.Display#FLAG_SECURE}, in which case the service will just receive
	* activity-level events.
	*
	* @hide
	*/
	@SystemApi
	public static final int FLAG_DISABLED_BY_FLAG_SECURE = 0x2;

	/** @hide */
	@IntDef(flag = true, prefix = { "FLAG_" }, value = {
	FLAG_DISABLED_BY_APP,
	FLAG_DISABLED_BY_FLAG_SECURE
	})
	@Retention(RetentionPolicy.SOURCE)
	@interface ContextCreationFlags{}

	/**
	* Flag indicating if this object has the app-provided context (which is set on
	* {@link ContentCaptureManager#createContentCaptureSession(ContentCaptureContext)}).
	*/
	private final boolean mHasClientContext;

	// Fields below are set by app on Builder
	private final @Nullable Bundle mExtras;
	private final @Nullable Uri mUri;

	// Fields below are set by server when the session starts
	// TODO(b/111276913): create new object for taskId + componentName / reuse on other places
	private final @Nullable ComponentName mComponentName;
	private final int mTaskId;
	private final int mDisplayId;
	private final int mFlags;

	/** @hide */
	public ContentCaptureContext(@Nullable ContentCaptureContext clientContext,
	@NonNull ComponentName componentName, int taskId, int displayId, int flags) {
	if (clientContext != null) {
	mHasClientContext = true;
	mExtras = clientContext.mExtras;
	mUri = clientContext.mUri;
	} else {
	mHasClientContext = false;
	mExtras = null;
	mUri = null;
	}
	mComponentName = Preconditions.checkNotNull(componentName);
	mTaskId = taskId;
	mDisplayId = displayId;
	mFlags = flags;
	}

	private ContentCaptureContext(@NonNull Builder builder) {
	mHasClientContext = true;
	mExtras = builder.mExtras;
	mUri = builder.mUri;

	mComponentName = null;
	mTaskId = mFlags = mDisplayId = 0;
	}

	/**
	* Gets the (optional) extras set by the app.
	*
	* <p>It can be used to provide vendor-specific data that can be modified and examined.
	*
	* @hide
	*/
	@SystemApi
	@Nullable
	public Bundle getExtras() {
	return mExtras;
	}

	/**
	* Gets the (optional) URI set by the app.
	*
	* @hide
	*/
	@SystemApi
	@Nullable
	public Uri getUri() {
	return mUri;
	}

	/**
	* Gets the id of the {@link TaskInfo task} associated with this context.
	*
	* @hide
	*/
	@SystemApi
	public int getTaskId() {
	return mTaskId;
	}

	/**
	* Gets the activity associated with this context.
	*
	* @hide
	*/
	@SystemApi
	public @NonNull ComponentName getActivityComponent() {
	return mComponentName;
	}

	/**
	* Gets the ID of the display associated with this context, as defined by
	* {G android.hardware.display.DisplayManager#getDisplay(int) DisplayManager.getDisplay()}.
	*
	* @hide
	*/
	@SystemApi
	public int getDisplayId() {
	return mDisplayId;
	}

	/**
	* Gets the flags associated with this context.
	*
	* @return any combination of {@link #FLAG_DISABLED_BY_FLAG_SECURE} and
	* {@link #FLAG_DISABLED_BY_APP}.
	*
	* @hide
	*/
	@SystemApi
	public @ContextCreationFlags int getFlags() {
	return mFlags;
	}

	/**
	* Builder for {@link ContentCaptureContext} objects.
	*/
	public static final class Builder {
	private Bundle mExtras;
	private Uri mUri;

	/**
	* Sets extra options associated with this context.
	*
	* <p>It can be used to provide vendor-specific data that can be modified and examined.
	*
	* @param extras extra options.
	* @return this builder.
	*/
	@NonNull
	public Builder setExtras(@NonNull Bundle extras) {
	// TODO(b/111276913): check build just once / throw exception / test / document
	mExtras = Preconditions.checkNotNull(extras);
	return this;
	}

	/**
	* Sets the {@link Uri} associated with this context.
	*
	* <p>See {@link View#setContentCaptureSession(ContentCaptureSession)} for an example.
	*
	* @param uri URI associated with this context.
	* @return this builder.
	*/
	@NonNull
	public Builder setUri(@NonNull Uri uri) {
	// TODO(b/111276913): check build just once / throw exception / test / document
	mUri = Preconditions.checkNotNull(uri);
	return this;
	}

	/**
	* Builds the {@link ContentCaptureContext}.
	*/
	public ContentCaptureContext build() {
	// TODO(b/111276913): check build just once / throw exception / test / document
	// TODO(b/111276913): make sure it at least one property (uri / extras) / test /
	// throw exception / documment
	return new ContentCaptureContext(this);
	}
	}

	/**
	* @hide
	*/
	// TODO(b/111276913): dump to proto as well
	public void dump(PrintWriter pw) {
	pw.print("comp="); pw.print(ComponentName.flattenToShortString(mComponentName));
	pw.print(", taskId="); pw.print(mTaskId);
	pw.print(", displayId="); pw.print(mDisplayId);
	if (mFlags > 0) {
	pw.print(", flags="); pw.print(mFlags);
	}
	if (mExtras != null) {
	// NOTE: cannot dump because it could contain PII
	pw.print(", hasExtras");
	}
	if (mUri != null) {
	// NOTE: cannot dump because it could contain PII
	pw.print(", hasUri");
	}
	}

	@Override
	public String toString() {
	final StringBuilder builder = new StringBuilder("Context[act=")
	.append(ComponentName.flattenToShortString(mComponentName))
	.append(", taskId=").append(mTaskId)
	.append(", displayId=").append(mDisplayId)
	.append(", flags=").append(mFlags);
	if (mExtras != null) {
	// NOTE: cannot print because it could contain PII
	builder.append(", hasExtras");
	}
	if (mUri != null) {
	// NOTE: cannot print because it could contain PII
	builder.append(", hasUri");
	}
	return builder.append(']').toString();
	}

	@Override
	public int describeContents() {
	return 0;
	}

	@Override
	public void writeToParcel(Parcel parcel, int flags) {
	parcel.writeInt(mHasClientContext ? 1 : 0);
	if (mHasClientContext) {
	parcel.writeParcelable(mUri, flags);
	parcel.writeBundle(mExtras);
	}
	parcel.writeParcelable(mComponentName, flags);
	if (mComponentName != null) {
	parcel.writeInt(mTaskId);
	parcel.writeInt(mDisplayId);
	parcel.writeInt(mFlags);
	}
	}

	public static final Parcelable.Creator<ContentCaptureContext> CREATOR =
	new Parcelable.Creator<ContentCaptureContext>() {

	@Override
	public ContentCaptureContext createFromParcel(Parcel parcel) {
	final boolean hasClientContext = parcel.readInt() == 1;

	final ContentCaptureContext clientContext;
	if (hasClientContext) {
	final Builder builder = new Builder();
	final Uri uri = parcel.readParcelable(null);
	final Bundle extras = parcel.readBundle();
	if (uri != null) builder.setUri(uri);
	if (extras != null) builder.setExtras(extras);
	// Must reconstruct the client context using the Builder API
	clientContext = new ContentCaptureContext(builder);
	} else {
	clientContext = null;
	}
	final ComponentName componentName = parcel.readParcelable(null);
	if (componentName == null) {
	// Client-state only
	return clientContext;
	} else {
	final int taskId = parcel.readInt();
	final int displayId = parcel.readInt();
	final int flags = parcel.readInt();
	return new ContentCaptureContext(clientContext, componentName, taskId,
	displayId, flags);
	}
	}

	@Override
	public ContentCaptureContext[] newArray(int size) {
	return new ContentCaptureContext[size];
	}
	};
	}