Add accessibility scroll actions to TabWidget (60530888) · Commits · e / os / android_frameworks_base

core/java/android/widget/TabWidget.java

+37 −0

Original line number	Diff line number	Diff line
		@@ -24,6 +24,7 @@ import android.graphics.Canvas;
		import android.graphics.Rect;
		import android.graphics.drawable.Drawable;
		import android.os.Build;
		import android.os.Bundle;
		import android.util.AttributeSet;
		import android.view.View;
		import android.view.View.OnFocusChangeListener;
		@@ -434,6 +435,42 @@ public class TabWidget extends LinearLayout implements OnFocusChangeListener {
		public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
		super.onInitializeAccessibilityNodeInfo(info);
		info.setClassName(TabWidget.class.getName());

		final int tabCount = getTabCount();

		if (tabCount > 1) {
		if (mSelectedTab > 0) {
		info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD);
		info.setScrollable(true);
		}

		if (mSelectedTab < (tabCount - 1)) {
		info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_FORWARD);
		info.setScrollable(true);
		}
		}
		}

		@Override
		public boolean performAccessibilityAction(int action, Bundle arguments) {
		final int tabCount = getTabCount();

		switch (action) {
		case AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD:
		if ((tabCount > 1) && (mSelectedTab > 0)) {
		focusCurrentTab(mSelectedTab - 1);
		return true;
		}
		return false;
		case AccessibilityNodeInfo.ACTION_SCROLL_FORWARD:
		if ((tabCount > 1) && (mSelectedTab < (tabCount - 1))) {
		focusCurrentTab(mSelectedTab + 1);
		return true;
		}
		return false;
		}

		return super.performAccessibilityAction(action, arguments);
		}

		/**