private void performTraversalInTransactionLocked() {
// Perform one last traversal for each removed display device.
final int removedCount = mRemovedDisplayDevices.size();
for (int i = 0; i < removedCount; i++) {
DisplayDevice device = mRemovedDisplayDevices.get(i);
device.performTraversalInTransactionLocked();
}
mRemovedDisplayDevices.clear();
// Clear all viewports before configuring displays so that we can keep
// track of which ones we have configured.
clearViewportsLocked();
// Configure each display device.
final int count = mDisplayDevices.size();
for (int i = 0; i < count; i++) {
DisplayDevice device = mDisplayDevices.get(i);
configureDisplayInTransactionLocked(device);
device.performTraversalInTransactionLocked();
}
// Tell the input system about these new viewports.
if (mInputManagerFuncs != null) {
mHandler.sendEmptyMessage(MSG_UPDATE_VIEWPORT);
}
}
