@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
// If we've been given an exact size to match, apply special formatting during layout.
final boolean wasFormatted = mFormatItems;
mFormatItems = MeasureSpec.getMode(widthMeasureSpec) == MeasureSpec.EXACTLY;
if (wasFormatted != mFormatItems) {
mFormatItemsWidth = 0; // Reset this when switching modes
}
// Special formatting can change whether items can fit as action buttons.
// Kick the menu and update presenters when this changes.
final int widthSize = MeasureSpec.getSize(widthMeasureSpec);
if (mFormatItems && mMenu != null && widthSize != mFormatItemsWidth) {
mFormatItemsWidth = widthSize;
mMenu.onItemsChanged(true);
}
final int childCount = getChildCount();
if (mFormatItems && childCount > 0) {
onMeasureExactFormat(widthMeasureSpec, heightMeasureSpec);
} else {
// Previous measurement at exact format may have set margins - reset them.
for (int i = 0; i < childCount; i++) {
final View child = getChildAt(i);
final LayoutParams lp = (LayoutParams) child.getLayoutParams();
lp.leftMargin = lp.rightMargin = 0;
}
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
