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package com.android.deskclock;
import androidx.annotation.NonNull;
import android.view.View;
import android.widget.ImageView;
/**
* Implementers of this interface are able to {@link #onUpdateFab configure the fab} and associated
* {@link #onUpdateFabButtons left/right buttons} including setting them {@link View#INVISIBLE} if
* they are unnecessary. Implementers also attach click handler logic to the
* {@link #onFabClick fab}, {@link #onLeftButtonClick left button} and
* {@link #onRightButtonClick right button}.
*/
public interface FabController {
/**
* Configures the display of the fab component to match the current state of this controller.
*
* @param fab the fab component to be configured based on current state
*/
void onUpdateFab(@NonNull ImageView fab);
/**
* Called before onUpdateFab when the fab should be animated.
*
* @param fab the fab component to be configured based on current state
*/
void onMorphFab(@NonNull ImageView fab);
/**
* Configures the display of the buttons to the left and right of the fab to match the current
* state of this controller.
*
* @param left button to the left of the fab to configure based on current state
* @param right button to the right of the fab to configure based on current state
*/
void onUpdateFabButtons(@NonNull ImageView left, @NonNull ImageView right);
/**
* Handles a click on the fab.
*
* @param fab the fab component on which the click occurred
*/
void onFabClick(@NonNull ImageView fab);
/**
* Handles a click on the button to the left of the fab component.
*
* @param left the button to the left of the fab component
*/
void onLeftButtonClick(@NonNull ImageView left);
/**
* Handles a click on the button to the right of the fab component.
*
* @param right the button to the right of the fab component
*/
void onRightButtonClick(@NonNull ImageView right);
/**
*
* @return the target visibility of the FAB component
*/
int getFabTargetVisibility();
}
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