Pass drawing order information to accessibility. (1f222548) · Commits · e / os / android_frameworks_base

api/current.txt

+2 −0

Original line number	Diff line number	Diff line
		@@ -42762,6 +42762,7 @@ package android.view.accessibility {
		method public android.view.accessibility.AccessibilityNodeInfo.CollectionInfo getCollectionInfo();
		method public android.view.accessibility.AccessibilityNodeInfo.CollectionItemInfo getCollectionItemInfo();
		method public java.lang.CharSequence getContentDescription();
		method public int getDrawingOrder();
		method public java.lang.CharSequence getError();
		method public android.os.Bundle getExtras();
		method public int getInputType();
		@@ -42824,6 +42825,7 @@ package android.view.accessibility {
		method public void setContentInvalid(boolean);
		method public void setContextClickable(boolean);
		method public void setDismissable(boolean);
		method public void setDrawingOrder(int);
		method public void setEditable(boolean);
		method public void setEnabled(boolean);
		method public void setError(java.lang.CharSequence);

api/system-current.txt

+2 −0

Original line number	Diff line number	Diff line
		@@ -45124,6 +45124,7 @@ package android.view.accessibility {
		method public android.view.accessibility.AccessibilityNodeInfo.CollectionInfo getCollectionInfo();
		method public android.view.accessibility.AccessibilityNodeInfo.CollectionItemInfo getCollectionItemInfo();
		method public java.lang.CharSequence getContentDescription();
		method public int getDrawingOrder();
		method public java.lang.CharSequence getError();
		method public android.os.Bundle getExtras();
		method public int getInputType();
		@@ -45186,6 +45187,7 @@ package android.view.accessibility {
		method public void setContentInvalid(boolean);
		method public void setContextClickable(boolean);
		method public void setDismissable(boolean);
		method public void setDrawingOrder(int);
		method public void setEditable(boolean);
		method public void setEnabled(boolean);
		method public void setError(java.lang.CharSequence);

api/test-current.txt

+2 −0

Original line number	Diff line number	Diff line
		@@ -42778,6 +42778,7 @@ package android.view.accessibility {
		method public android.view.accessibility.AccessibilityNodeInfo.CollectionInfo getCollectionInfo();
		method public android.view.accessibility.AccessibilityNodeInfo.CollectionItemInfo getCollectionItemInfo();
		method public java.lang.CharSequence getContentDescription();
		method public int getDrawingOrder();
		method public java.lang.CharSequence getError();
		method public android.os.Bundle getExtras();
		method public int getInputType();
		@@ -42840,6 +42841,7 @@ package android.view.accessibility {
		method public void setContentInvalid(boolean);
		method public void setContextClickable(boolean);
		method public void setDismissable(boolean);
		method public void setDrawingOrder(int);
		method public void setEditable(boolean);
		method public void setEnabled(boolean);
		method public void setError(java.lang.CharSequence);

core/java/android/view/View.java

+62 −0

Original line number	Diff line number	Diff line
		@@ -6691,6 +6691,68 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
		}

		info.addAction(AccessibilityAction.ACTION_SHOW_ON_SCREEN);
		populateAccessibilityNodeInfoDrawingOrderInParent(info);
		}

		/**
		* Determine the order in which this view will be drawn relative to its siblings for a11y
		*
		* @param info The info whose drawing order should be populated
		*/
		private void populateAccessibilityNodeInfoDrawingOrderInParent(AccessibilityNodeInfo info) {
		int drawingOrderInParent = 1;
		// Iterate up the hierarchy if parents are not important for a11y
		View viewAtDrawingLevel = this;
		final ViewParent parent = getParentForAccessibility();
		while (viewAtDrawingLevel != parent) {
		final ViewParent currentParent = viewAtDrawingLevel.getParent();
		if (!(currentParent instanceof ViewGroup)) {
		// Should only happen for the Decor
		drawingOrderInParent = 0;
		break;
		} else {
		final ViewGroup parentGroup = (ViewGroup) currentParent;
		final int childCount = parentGroup.getChildCount();
		if (childCount > 1) {
		List<View> preorderedList = parentGroup.buildOrderedChildList();
		if (preorderedList != null) {
		final int childDrawIndex = preorderedList.indexOf(viewAtDrawingLevel);
		for (int i = 0; i < childDrawIndex; i++) {
		drawingOrderInParent += numViewsForAccessibility(preorderedList.get(i));
		}
		} else {
		final int childIndex = parentGroup.indexOfChild(viewAtDrawingLevel);
		final boolean customOrder = parentGroup.isChildrenDrawingOrderEnabled();
		final int childDrawIndex = ((childIndex >= 0) && customOrder) ? parentGroup
		.getChildDrawingOrder(childCount, childIndex) : childIndex;
		final int numChildrenToIterate = customOrder ? childCount : childDrawIndex;
		if (childDrawIndex != 0) {
		for (int i = 0; i < numChildrenToIterate; i++) {
		final int otherDrawIndex = (customOrder ?
		parentGroup.getChildDrawingOrder(childCount, i) : i);
		if (otherDrawIndex < childDrawIndex) {
		drawingOrderInParent +=
		numViewsForAccessibility(parentGroup.getChildAt(i));
		}
		}
		}
		}
		}
		}
		viewAtDrawingLevel = (View) currentParent;
		}
		info.setDrawingOrder(drawingOrderInParent);
		}

		private static int numViewsForAccessibility(View view) {
		if (view != null) {
		if (view.includeForAccessibility()) {
		return 1;
		} else if (view instanceof ViewGroup) {
		return ((ViewGroup) view).getNumChildrenForAccessibility();
		}
		}
		return 0;
		}

		private View findLabelForView(View view, int labeledId) {

core/java/android/view/ViewGroup.java

+20 −0

Original line number	Diff line number	Diff line
		@@ -3082,6 +3082,26 @@ public abstract class ViewGroup extends View implements ViewParent, ViewManager
		}
		}

		/**
		* Counts the number of children of this View that will be sent to an accessibility service.
		*
		* @return The number of children an {@code AccessibilityNodeInfo} rooted at this View
		* would have.
		*/
		int getNumChildrenForAccessibility() {
		int numChildrenForAccessibility = 0;
		for (int i = 0; i < getChildCount(); i++) {
		View child = getChildAt(i);
		if (child.includeForAccessibility()) {
		numChildrenForAccessibility++;
		} else if (child instanceof ViewGroup) {
		numChildrenForAccessibility += ((ViewGroup) child)
		.getNumChildrenForAccessibility();
		}
		}
		return numChildrenForAccessibility;
		}

		/**
		* {@inheritDoc}
		*