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DrawerListenerAdapter.java
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DrawerListenerAdapter.java
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package com.kaichunlin.transition.adapter;
import android.app.Activity;
import android.support.annotation.IdRes;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.view.View;
/**
* Adapter for DrawerListener, the transition range goes from 0.0f to 1.0f, where 0.0f is the closed state and 1.0f is the opened state.
* <p>
* Created by Kai-Chun Lin on 2015/4/14.
*/
public class DrawerListenerAdapter extends MenuBaseAdapter implements DrawerLayout.DrawerListener {
private final ActionBarDrawerToggle mDrawerToggle;
private DrawerLayout.DrawerListener mDrawerListener;
private int mDrawerId;
private DrawerLayout mDrawerLayout;
public DrawerListenerAdapter(@NonNull ActionBarDrawerToggle mDrawerToggle) {
this(mDrawerToggle, 0);
}
public DrawerListenerAdapter(@NonNull ActionBarDrawerToggle mDrawerToggle, @IdRes int mDrawerId) {
this.mDrawerToggle = mDrawerToggle;
this.mDrawerId = mDrawerId;
}
/**
* @param activity
* @return is the drawer in the opened state
*/
public boolean isOpened(@NonNull Activity activity) {
return mDrawerLayout.isDrawerOpen(activity.findViewById(mDrawerId));
}
@Override
public void onDrawerOpened(@NonNull View view) {
mDrawerToggle.onDrawerOpened(view);
getAdapterState().setState(AdapterState.OPEN);
stopTransition();
if (mDrawerListener != null) {
mDrawerListener.onDrawerOpened(view);
}
}
@Override
public void onDrawerClosed(@NonNull View view) {
mDrawerToggle.onDrawerClosed(view);
getAdapterState().setState(AdapterState.CLOSE);
stopTransition();
if (mDrawerListener != null) {
mDrawerListener.onDrawerClosed(view);
}
}
@Override
public void onDrawerStateChanged(int state) {
mDrawerToggle.onDrawerStateChanged(state);
switch (state) {
case DrawerLayout.STATE_DRAGGING:
case DrawerLayout.STATE_SETTLING:
startTransition();
break;
case DrawerLayout.STATE_IDLE:
stopTransition();
break;
}
if (mDrawerListener != null) {
mDrawerListener.onDrawerStateChanged(state);
}
}
@Override
public boolean startTransition() {
return startTransition(getAdapterState().isOpen() ? 1f : 0f);
}
@Override
public void onDrawerSlide(View view, float slideOffset) {
getTransitionManager().updateProgress(slideOffset);
if (view == null) {
return;
}
mDrawerToggle.onDrawerSlide(view, slideOffset);
if (mDrawerListener != null) {
mDrawerListener.onDrawerSlide(view, slideOffset);
}
}
/**
* @param mDrawerListener
*/
public void setDrawerListener(@Nullable DrawerLayout.DrawerListener mDrawerListener) {
this.mDrawerListener = mDrawerListener;
}
/**
* @param drawerLayout
*/
public void setDrawerLayout(@NonNull DrawerLayout drawerLayout) {
this.mDrawerLayout = drawerLayout;
drawerLayout.setDrawerListener(this);
}
/**
* @param drawerId Drawer view ID
*/
public void setDrawerId(@IdRes int drawerId) {
mDrawerId = drawerId;
}
@Override
protected MenuOptionHandler createMenuHandler() {
return new DefaultMenuOptionHandler(this, getAdapterState());
}
}