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Merge "Make AbsSeekBar widget adjustable via accessibility actions." into jb-dev

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This commit is contained in:
Svetoslav Ganov
2012-05-16 15:53:35 -07:00
committed by Android (Google) Code Review
parent 4ee6a63dfe c826b7d8fa
commit 6467f94b37
1 changed files with 42 additions and 0 deletions
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42
core/java/android/widget/AbsSeekBar.java
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@@ -21,6 +21,7 @@ import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.util.AttributeSet;
import android.view.KeyEvent;
import android.view.MotionEvent;
@@ -486,5 +487,46 @@ public abstract class AbsSeekBar extends ProgressBar {
public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfo(info);
info.setClassName(AbsSeekBar.class.getName());
if (isEnabled()) {
final int progress = getProgress();
if (progress > 0) {
info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD);
}
if (progress < getMax()) {
info.addAction(AccessibilityNodeInfo.ACTION_SCROLL_FORWARD);
}
}
}
@Override
public boolean performAccessibilityAction(int action, Bundle arguments) {
if (super.performAccessibilityAction(action, arguments)) {
return true;
}
if (!isEnabled()) {
return false;
}
final int progress = getProgress();
final int increment = Math.max(1, Math.round((float) getMax() / 5));
switch (action) {
case AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD: {
if (progress <= 0) {
return false;
}
setProgress(progress - increment, true);
onKeyChange();
return true;
}
case AccessibilityNodeInfo.ACTION_SCROLL_FORWARD: {
if (progress >= getMax()) {
return false;
}
setProgress(progress + increment, true);
onKeyChange();
return true;
}
}
return false;
}
}