Add change type to ExploreByTouchHelper (961cdbf1) · Commits · e / os / android_frameworks_base

core/java/com/android/internal/widget/ExploreByTouchHelper.java

+45 −10

Original line number	Diff line number	Diff line
		@@ -20,7 +20,6 @@ import android.content.Context;
		import android.graphics.Rect;
		import android.os.Bundle;
		import android.util.IntArray;
		import android.view.accessibility.*;
		import android.view.MotionEvent;
		import android.view.View;
		import android.view.ViewParent;
		@@ -50,6 +49,9 @@ public abstract class ExploreByTouchHelper extends View.AccessibilityDelegate {
		/** Virtual node identifier value for invalid nodes. */
		public static final int INVALID_ID = Integer.MIN_VALUE;

		/** Virtual node identifier value for the host view's node. */
		public static final int HOST_ID = View.NO_ID;

		/** Default class name used for virtual views. */
		private static final String DEFAULT_CLASS_NAME = View.class.getName();

		@@ -195,7 +197,7 @@ public abstract class ExploreByTouchHelper extends View.AccessibilityDelegate {
		* parent view.
		*/
		public void invalidateRoot() {
		invalidateVirtualView(View.NO_ID);
		invalidateVirtualView(HOST_ID, AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE);
		}

		/**
		@@ -205,10 +207,43 @@ public abstract class ExploreByTouchHelper extends View.AccessibilityDelegate {
		* You <b>must</b> call this method after changing any of the properties set
		* in {@link #onPopulateNodeForVirtualView}.
		*
		* @param virtualViewId The virtual view id to invalidate.
		* @param virtualViewId The virtual view id to invalidate, or
		* {@link #HOST_ID} to invalidate the root view.
		* @see #invalidateVirtualView(int, int)
		*/
		public void invalidateVirtualView(int virtualViewId) {
		sendEventForVirtualView(virtualViewId, AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED);
		invalidateVirtualView(virtualViewId,
		AccessibilityEvent.CONTENT_CHANGE_TYPE_UNDEFINED);
		}

		/**
		* Notifies the accessibility framework that the properties of a particular
		* item have changed.
		* <p>
		* You <b>must</b> call this method after changing any of the properties set
		* in {@link #onPopulateNodeForVirtualView}.
		*
		* @param virtualViewId The virtual view id to invalidate, or
		* {@link #HOST_ID} to invalidate the root view.
		* @param changeTypes The bit mask of change types. May be {@code 0} for the
		* default (undefined) change type or one or more of:
		* <ul>
		* <li>{@link AccessibilityEvent#CONTENT_CHANGE_TYPE_CONTENT_DESCRIPTION}
		* <li>{@link AccessibilityEvent#CONTENT_CHANGE_TYPE_SUBTREE}
		* <li>{@link AccessibilityEvent#CONTENT_CHANGE_TYPE_TEXT}
		* <li>{@link AccessibilityEvent#CONTENT_CHANGE_TYPE_UNDEFINED}
		* </ul>
		*/
		public void invalidateVirtualView(int virtualViewId, int changeTypes) {
		if (virtualViewId != INVALID_ID && mManager.isEnabled()) {
		final ViewParent parent = mView.getParent();
		if (parent != null) {
		final AccessibilityEvent event = createEvent(virtualViewId,
		AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED);
		event.setContentChangeTypes(changeTypes);
		parent.requestSendAccessibilityEvent(mView, event);
		}
		}
		}

		/**
		@@ -245,7 +280,7 @@ public abstract class ExploreByTouchHelper extends View.AccessibilityDelegate {

		/**
		* Constructs and returns an {@link AccessibilityEvent} for the specified
		* virtual view id, which includes the host view ({@link View#NO_ID}).
		* virtual view id, which includes the host view ({@link #HOST_ID}).
		*
		* @param virtualViewId The virtual view id for the item for which to
		* construct an event.
		@@ -255,7 +290,7 @@ public abstract class ExploreByTouchHelper extends View.AccessibilityDelegate {
		*/
		private AccessibilityEvent createEvent(int virtualViewId, int eventType) {
		switch (virtualViewId) {
		case View.NO_ID:
		case HOST_ID:
		return createEventForHost(eventType);
		default:
		return createEventForChild(virtualViewId, eventType);
		@@ -309,7 +344,7 @@ public abstract class ExploreByTouchHelper extends View.AccessibilityDelegate {
		/**
		* Constructs and returns an {@link android.view.accessibility.AccessibilityNodeInfo} for the
		* specified virtual view id, which includes the host view
		* ({@link View#NO_ID}).
		* ({@link #HOST_ID}).
		*
		* @param virtualViewId The virtual view id for the item for which to
		* construct a node.
		@@ -318,7 +353,7 @@ public abstract class ExploreByTouchHelper extends View.AccessibilityDelegate {
		*/
		private AccessibilityNodeInfo createNode(int virtualViewId) {
		switch (virtualViewId) {
		case View.NO_ID:
		case HOST_ID:
		return createNodeForHost();
		default:
		return createNodeForChild(virtualViewId);
		@@ -457,7 +492,7 @@ public abstract class ExploreByTouchHelper extends View.AccessibilityDelegate {

		private boolean performAction(int virtualViewId, int action, Bundle arguments) {
		switch (virtualViewId) {
		case View.NO_ID:
		case HOST_ID:
		return performActionForHost(action, arguments);
		default:
		return performActionForChild(virtualViewId, action, arguments);
		@@ -646,7 +681,7 @@ public abstract class ExploreByTouchHelper extends View.AccessibilityDelegate {
		* <li>package name, set to the package of the host view's
		* {@link Context}, see {@link AccessibilityEvent#setPackageName}
		* <li>event source, set to the host view and virtual view identifier,
		* see {@link AccessibilityRecord#setSource(View, int)}
		* see {@link android.view.accessibility.AccessibilityRecord#setSource(View, int)}
		* </ul>
		*
		* @param virtualViewId The virtual view id for the item for which to