| /* |
| * Copyright (C) 2007 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.view; |
| |
| import android.content.Context; |
| import android.util.AttributeSet; |
| import android.util.Log; |
| import android.widget.TextView; |
| import com.android.frameworks.coretests.R; |
| |
| import android.os.Bundle; |
| import android.widget.Button; |
| import android.view.View; |
| import android.app.Activity; |
| |
| /** |
| * Exercise View's ability to change their visibility: GONE, INVISIBLE and |
| * VISIBLE. |
| */ |
| public class VisibilityCallback extends Activity { |
| private static final boolean DEBUG = false; |
| |
| private MonitoredTextView mVictim; |
| |
| @Override |
| protected void onCreate(Bundle icicle) { |
| super.onCreate(icicle); |
| setContentView(R.layout.visibility_callback); |
| |
| // Find the view whose visibility will change |
| mVictim = (MonitoredTextView)findViewById(R.id.victim); |
| |
| // Find our buttons |
| Button visibleButton = findViewById(R.id.vis); |
| Button invisibleButton = findViewById(R.id.invis); |
| Button goneButton = findViewById(R.id.gone); |
| |
| // Wire each button to a click listener |
| visibleButton.setOnClickListener(mVisibleListener); |
| invisibleButton.setOnClickListener(mInvisibleListener); |
| goneButton.setOnClickListener(mGoneListener); |
| } |
| |
| |
| View.OnClickListener mVisibleListener = new View.OnClickListener() { |
| public void onClick(View v) { |
| mVictim.setVisibility(View.VISIBLE); |
| } |
| }; |
| |
| View.OnClickListener mInvisibleListener = new View.OnClickListener() { |
| public void onClick(View v) { |
| mVictim.setVisibility(View.INVISIBLE); |
| } |
| }; |
| |
| View.OnClickListener mGoneListener = new View.OnClickListener() { |
| public void onClick(View v) { |
| mVictim.setVisibility(View.GONE); |
| } |
| }; |
| |
| public static class MonitoredTextView extends TextView { |
| private View mLastVisChangedView; |
| private int mLastChangedVisibility; |
| |
| public MonitoredTextView(Context context) { |
| super(context); |
| } |
| |
| public MonitoredTextView(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| } |
| |
| public MonitoredTextView(Context context, AttributeSet attrs, int defStyle) { |
| super(context, attrs, defStyle); |
| } |
| |
| public View getLastVisChangedView() { |
| return mLastVisChangedView; |
| } |
| |
| public int getLastChangedVisibility() { |
| return mLastChangedVisibility; |
| } |
| |
| @Override |
| protected void onVisibilityChanged(View changedView, int visibility) { |
| mLastVisChangedView = changedView; |
| mLastChangedVisibility = visibility; |
| |
| if (DEBUG) { |
| Log.d("viewVis", "visibility: " + visibility); |
| } |
| } |
| } |
| } |