Improve LayoutInflater's compliance.
There are standards, we should do our best to implement them
properly.
Change-Id: I83a7dc0651795d09b19d536c17b6aefc2eca5c81
diff --git a/core/java/android/view/LayoutInflater.java b/core/java/android/view/LayoutInflater.java
index 81346b4..332a0fa 100644
--- a/core/java/android/view/LayoutInflater.java
+++ b/core/java/android/view/LayoutInflater.java
@@ -16,6 +16,10 @@
package android.view;
+import android.graphics.Canvas;
+import android.os.Handler;
+import android.os.Message;
+import android.widget.FrameLayout;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
@@ -83,6 +87,7 @@
private static final String TAG_MERGE = "merge";
private static final String TAG_INCLUDE = "include";
+ private static final String TAG_1995 = "blink";
private static final String TAG_REQUEST_FOCUS = "requestFocus";
/**
@@ -454,7 +459,12 @@
rInflate(parser, root, attrs, false);
} else {
// Temp is the root view that was found in the xml
- View temp = createViewFromTag(root, name, attrs);
+ View temp;
+ if (TAG_1995.equals(name)) {
+ temp = new BlinkLayout(mContext, attrs);
+ } else {
+ temp = createViewFromTag(root, name, attrs);
+ }
ViewGroup.LayoutParams params = null;
@@ -605,10 +615,9 @@
* Throw an exception because the specified class is not allowed to be inflated.
*/
private void failNotAllowed(String name, String prefix, AttributeSet attrs) {
- InflateException ie = new InflateException(attrs.getPositionDescription()
+ throw new InflateException(attrs.getPositionDescription()
+ ": Class not allowed to be inflated "
+ (prefix != null ? (prefix + name) : name));
- throw ie;
}
/**
@@ -720,6 +729,12 @@
parseInclude(parser, parent, attrs);
} else if (TAG_MERGE.equals(name)) {
throw new InflateException("<merge /> must be the root element");
+ } else if (TAG_1995.equals(name)) {
+ final View view = new BlinkLayout(mContext, attrs);
+ final ViewGroup viewGroup = (ViewGroup) parent;
+ final ViewGroup.LayoutParams params = viewGroup.generateLayoutParams(attrs);
+ rInflate(parser, view, attrs, true);
+ viewGroup.addView(view, params);
} else {
final View view = createViewFromTag(parent, name, attrs);
final ViewGroup viewGroup = (ViewGroup) parent;
@@ -847,5 +862,64 @@
parser.getDepth() > currentDepth) && type != XmlPullParser.END_DOCUMENT) {
// Empty
}
- }
+ }
+
+ private static class BlinkLayout extends FrameLayout {
+ private static final int MESSAGE_BLINK = 0x42;
+ private static final int BLINK_DELAY = 500;
+
+ private boolean mBlink;
+ private boolean mBlinkState;
+ private final Handler mHandler;
+
+ public BlinkLayout(Context context, AttributeSet attrs) {
+ super(context, attrs);
+ mHandler = new Handler(new Handler.Callback() {
+ @Override
+ public boolean handleMessage(Message msg) {
+ if (msg.what == MESSAGE_BLINK) {
+ if (mBlink) {
+ mBlinkState = !mBlinkState;
+ makeBlink();
+ }
+ invalidate();
+ return true;
+ }
+ return false;
+ }
+ });
+ }
+
+ private void makeBlink() {
+ Message message = mHandler.obtainMessage(MESSAGE_BLINK);
+ mHandler.sendMessageDelayed(message, BLINK_DELAY);
+ }
+
+ @Override
+ protected void onAttachedToWindow() {
+ super.onAttachedToWindow();
+
+ mBlink = true;
+ mBlinkState = true;
+
+ makeBlink();
+ }
+
+ @Override
+ protected void onDetachedFromWindow() {
+ super.onDetachedFromWindow();
+
+ mBlink = false;
+ mBlinkState = true;
+
+ mHandler.removeMessages(MESSAGE_BLINK);
+ }
+
+ @Override
+ protected void dispatchDraw(Canvas canvas) {
+ if (mBlinkState) {
+ super.dispatchDraw(canvas);
+ }
+ }
+ }
}
