java/src/com/android/inputmethod/latin/setup/SetupWizardActivity.java - platform/packages/inputmethods/LatinIME - Git at Google

 /*
  * Copyright (C) 2013 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 com.android.inputmethod.latin.setup;

 import android.app.Activity;
 import android.content.ContentResolver;
 import android.content.Intent;
 import android.content.res.Resources;
 import android.media.MediaPlayer;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Message;
 import android.provider.Settings;
 import android.util.Log;
 import android.view.View;
 import android.view.inputmethod.InputMethodInfo;
 import android.widget.ImageView;
 import android.widget.TextView;
 import android.widget.VideoView;

 import com.android.inputmethod.compat.TextViewCompatUtils;
 import com.android.inputmethod.compat.ViewCompatUtils;
 import com.android.inputmethod.latin.CollectionUtils;
 import com.android.inputmethod.latin.R;
 import com.android.inputmethod.latin.RichInputMethodManager;
 import com.android.inputmethod.latin.SettingsActivity;
 import com.android.inputmethod.latin.StaticInnerHandlerWrapper;

 import java.util.ArrayList;

 // TODO: Use Fragment to implement welcome screen and setup steps.
 public final class SetupWizardActivity extends Activity implements View.OnClickListener {
     static final String TAG = SetupWizardActivity.class.getSimpleName();

     private static final boolean ENABLE_WELCOME_VIDEO = true;

     private View mSetupWizard;
     private View mWelcomeScreen;
     private View mSetupScreen;
     private Uri mWelcomeVideoUri;
     private VideoView mWelcomeVideoView;
     private ImageView mWelcomeImageView;
     private View mActionStart;
     private View mActionNext;
     private TextView mStep1Bullet;
     private TextView mActionFinish;
     private SetupStepGroup mSetupStepGroup;
     private static final String STATE_STEP = "step";
     private int mStepNumber;
     private static final int STEP_WELCOME = 0;
     private static final int STEP_1 = 1;
     private static final int STEP_2 = 2;
     private static final int STEP_3 = 3;
     private static final int STEP_LAUNCHING_IME_SETTINGS = 4;
     private static final int STEP_BACK_FROM_IME_SETTINGS = 5;

     final SettingsPoolingHandler mHandler = new SettingsPoolingHandler(this);

     static final class SettingsPoolingHandler
             extends StaticInnerHandlerWrapper<SetupWizardActivity> {
         private static final int MSG_POLLING_IME_SETTINGS = 0;
         private static final long IME_SETTINGS_POLLING_INTERVAL = 200;

         public SettingsPoolingHandler(final SetupWizardActivity outerInstance) {
             super(outerInstance);
         }

         @Override
         public void handleMessage(final Message msg) {
             final SetupWizardActivity setupWizardActivity = getOuterInstance();
             if (setupWizardActivity == null) {
                 return;
             }
             switch (msg.what) {
             case MSG_POLLING_IME_SETTINGS:
                 if (SetupActivity.isThisImeEnabled(setupWizardActivity)) {
                     setupWizardActivity.invokeSetupWizardOfThisIme();
                     return;
                 }
                 startPollingImeSettings();
                 break;
             }
         }

         public void startPollingImeSettings() {
             sendMessageDelayed(obtainMessage(MSG_POLLING_IME_SETTINGS),
                     IME_SETTINGS_POLLING_INTERVAL);
         }

         public void cancelPollingImeSettings() {
             removeMessages(MSG_POLLING_IME_SETTINGS);
         }
     }

     @Override
     protected void onCreate(final Bundle savedInstanceState) {
         setTheme(android.R.style.Theme_Translucent_NoTitleBar);
         super.onCreate(savedInstanceState);

         setContentView(R.layout.setup_wizard);
         mSetupWizard = findViewById(R.id.setup_wizard);

         RichInputMethodManager.init(this);

         if (savedInstanceState == null) {
             mStepNumber = determineSetupStepNumberFromLauncher();
         } else {
             mStepNumber = savedInstanceState.getInt(STATE_STEP);
         }

         final String applicationName = getResources().getString(getApplicationInfo().labelRes);
         mWelcomeScreen = findViewById(R.id.setup_welcome_screen);
         final TextView welcomeTitle = (TextView)findViewById(R.id.setup_welcome_title);
         welcomeTitle.setText(getString(R.string.setup_welcome_title, applicationName));

         mSetupScreen = findViewById(R.id.setup_steps_screen);
         final TextView stepsTitle = (TextView)findViewById(R.id.setup_title);
         stepsTitle.setText(getString(R.string.setup_steps_title, applicationName));

         final SetupStepIndicatorView indicatorView =
                 (SetupStepIndicatorView)findViewById(R.id.setup_step_indicator);
         mSetupStepGroup = new SetupStepGroup(indicatorView);

         mStep1Bullet = (TextView)findViewById(R.id.setup_step1_bullet);
         mStep1Bullet.setOnClickListener(this);
         final SetupStep step1 = new SetupStep(STEP_1, applicationName,
                 mStep1Bullet, findViewById(R.id.setup_step1),
                 R.string.setup_step1_title, R.string.setup_step1_instruction,
                 R.string.setup_step1_finished_instruction, R.drawable.ic_setup_step1,
                 R.string.setup_step1_action);
         step1.setAction(new Runnable() {
             @Override
             public void run() {
                 invokeLanguageAndInputSettings();
                 mHandler.startPollingImeSettings();
             }
         });
         mSetupStepGroup.addStep(step1);

         final SetupStep step2 = new SetupStep(STEP_2, applicationName,
                 (TextView)findViewById(R.id.setup_step2_bullet), findViewById(R.id.setup_step2),
                 R.string.setup_step2_title, R.string.setup_step2_instruction,
                 0 /* finishedInstruction */, R.drawable.ic_setup_step2,
                 R.string.setup_step2_action);
         step2.setAction(new Runnable() {
             @Override
             public void run() {
                 // Invoke input method picker.
                 RichInputMethodManager.getInstance().getInputMethodManager()
                         .showInputMethodPicker();
             }
         });
         mSetupStepGroup.addStep(step2);

         final SetupStep step3 = new SetupStep(STEP_3, applicationName,
                 (TextView)findViewById(R.id.setup_step3_bullet), findViewById(R.id.setup_step3),
                 R.string.setup_step3_title, R.string.setup_step3_instruction,
                 0 /* finishedInstruction */, R.drawable.ic_setup_step3,
                 R.string.setup_step3_action);
         step3.setAction(new Runnable() {
             @Override
             public void run() {
                 invokeSubtypeEnablerOfThisIme();
             }
         });
         mSetupStepGroup.addStep(step3);

         mWelcomeVideoUri = new Uri.Builder()
                 .scheme(ContentResolver.SCHEME_ANDROID_RESOURCE)
                 .authority(getPackageName())
                 .path(Integer.toString(R.raw.setup_welcome_video))
                 .build();
         final VideoView welcomeVideoView = (VideoView)findViewById(R.id.setup_welcome_video);
         welcomeVideoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
             @Override
             public void onPrepared(final MediaPlayer mp) {
                 // Now VideoView has been laid-out and ready to play, remove background of it to
                 // reveal the video.
                 welcomeVideoView.setBackgroundResource(0);
                 mp.setLooping(true);
             }
         });
         welcomeVideoView.setOnErrorListener(new MediaPlayer.OnErrorListener() {
             @Override
             public boolean onError(final MediaPlayer mp, final int what, final int extra) {
                 Log.e(TAG, "Playing welcome video causes error: what=" + what + " extra=" + extra);
                 hideWelcomeVideoAndShowWelcomeImage();
                 return true;
             }
         });
         mWelcomeVideoView = welcomeVideoView;
         mWelcomeImageView = (ImageView)findViewById(R.id.setup_welcome_image);

         mActionStart = findViewById(R.id.setup_start_label);
         mActionStart.setOnClickListener(this);
         mActionNext = findViewById(R.id.setup_next);
         mActionNext.setOnClickListener(this);
         mActionFinish = (TextView)findViewById(R.id.setup_finish);
         TextViewCompatUtils.setCompoundDrawablesRelativeWithIntrinsicBounds(mActionFinish,
                 getResources().getDrawable(R.drawable.ic_setup_finish), null, null, null);
         mActionFinish.setOnClickListener(this);
     }

     @Override
     public void onClick(final View v) {
         if (v == mActionFinish) {
             finish();
             return;
         }
         final int currentStep = determineSetupStepNumber();
         final int nextStep;
         if (v == mActionStart) {
             nextStep = STEP_1;
         } else if (v == mActionNext) {
             nextStep = mStepNumber + 1;
         } else if (v == mStep1Bullet && currentStep == STEP_2) {
             nextStep = STEP_1;
         } else {
             nextStep = mStepNumber;
         }
         if (mStepNumber != nextStep) {
             mStepNumber = nextStep;
             updateSetupStepView();
         }
     }

     void invokeSetupWizardOfThisIme() {
         final Intent intent = new Intent();
         intent.setClass(this, SetupWizardActivity.class);
         intent.setFlags(Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
                 | Intent.FLAG_ACTIVITY_SINGLE_TOP
                 | Intent.FLAG_ACTIVITY_CLEAR_TOP);
         startActivity(intent);
     }

     private void invokeSettingsOfThisIme() {
         final Intent intent = new Intent();
         intent.setClass(this, SettingsActivity.class);
         intent.setFlags(Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
                 | Intent.FLAG_ACTIVITY_CLEAR_TOP);
         startActivity(intent);
     }

     void invokeLanguageAndInputSettings() {
         final Intent intent = new Intent();
         intent.setAction(Settings.ACTION_INPUT_METHOD_SETTINGS);
         intent.addCategory(Intent.CATEGORY_DEFAULT);
         startActivity(intent);
     }

     void invokeSubtypeEnablerOfThisIme() {
         final InputMethodInfo imi =
                 RichInputMethodManager.getInstance().getInputMethodInfoOfThisIme();
         final Intent intent = new Intent();
         intent.setAction(Settings.ACTION_INPUT_METHOD_SUBTYPE_SETTINGS);
         intent.addCategory(Intent.CATEGORY_DEFAULT);
         intent.putExtra(Settings.EXTRA_INPUT_METHOD_ID, imi.getId());
         startActivity(intent);
     }

     private int determineSetupStepNumberFromLauncher() {
         final int stepNumber = determineSetupStepNumber();
         if (stepNumber == STEP_1) {
             return STEP_WELCOME;
         }
         if (stepNumber == STEP_3) {
             return STEP_LAUNCHING_IME_SETTINGS;
         }
         return stepNumber;
     }

     private int determineSetupStepNumber() {
         mHandler.cancelPollingImeSettings();
         if (!SetupActivity.isThisImeEnabled(this)) {
             return STEP_1;
         }
         if (!SetupActivity.isThisImeCurrent(this)) {
             return STEP_2;
         }
         return STEP_3;
     }

     @Override
     protected void onSaveInstanceState(final Bundle outState) {
         super.onSaveInstanceState(outState);
         outState.putInt(STATE_STEP, mStepNumber);
     }

     @Override
     protected void onRestoreInstanceState(final Bundle savedInstanceState) {
         super.onRestoreInstanceState(savedInstanceState);
         mStepNumber = savedInstanceState.getInt(STATE_STEP);
     }

     private static boolean isInSetupSteps(final int stepNumber) {
         return stepNumber >= STEP_1 && stepNumber <= STEP_3;
     }

     @Override
     protected void onRestart() {
         super.onRestart();
         if (isInSetupSteps(mStepNumber)) {
             mStepNumber = determineSetupStepNumber();
         }
     }

     @Override
     protected void onResume() {
         super.onResume();
         if (mStepNumber == STEP_LAUNCHING_IME_SETTINGS) {
             // Prevent white screen flashing while launching settings activity.
             mSetupWizard.setVisibility(View.INVISIBLE);
             invokeSettingsOfThisIme();
             mStepNumber = STEP_BACK_FROM_IME_SETTINGS;
             return;
         }
         if (mStepNumber == STEP_BACK_FROM_IME_SETTINGS) {
             finish();
             return;
         }
         updateSetupStepView();
     }

     @Override
     public void onBackPressed() {
         if (mStepNumber == STEP_1) {
             mStepNumber = STEP_WELCOME;
             updateSetupStepView();
             return;
         }
         super.onBackPressed();
     }

     void hideWelcomeVideoAndShowWelcomeImage() {
         mWelcomeVideoView.setVisibility(View.GONE);
         mWelcomeImageView.setImageResource(R.raw.setup_welcome_image);
         mWelcomeImageView.setVisibility(View.VISIBLE);
     }

     private void showAndStartWelcomeVideo() {
         mWelcomeVideoView.setVisibility(View.VISIBLE);
         mWelcomeVideoView.setVideoURI(mWelcomeVideoUri);
         mWelcomeVideoView.start();
     }

     private void hideAndStopWelcomeVideo() {
         mWelcomeVideoView.stopPlayback();
         mWelcomeVideoView.setVisibility(View.GONE);
     }

     @Override
     protected void onPause() {
         hideAndStopWelcomeVideo();
         super.onPause();
     }

     @Override
     public void onWindowFocusChanged(final boolean hasFocus) {
         super.onWindowFocusChanged(hasFocus);
         if (hasFocus && isInSetupSteps(mStepNumber)) {
             mStepNumber = determineSetupStepNumber();
             updateSetupStepView();
         }
     }

     private void updateSetupStepView() {
         mSetupWizard.setVisibility(View.VISIBLE);
         final boolean welcomeScreen = (mStepNumber == STEP_WELCOME);
         mWelcomeScreen.setVisibility(welcomeScreen ? View.VISIBLE : View.GONE);
         mSetupScreen.setVisibility(welcomeScreen ? View.GONE : View.VISIBLE);
         if (welcomeScreen) {
             if (ENABLE_WELCOME_VIDEO) {
                 showAndStartWelcomeVideo();
             } else {
                 hideWelcomeVideoAndShowWelcomeImage();
             }
             return;
         }
         hideAndStopWelcomeVideo();
         final boolean isStepActionAlreadyDone = mStepNumber < determineSetupStepNumber();
         mSetupStepGroup.enableStep(mStepNumber, isStepActionAlreadyDone);
         mActionNext.setVisibility(isStepActionAlreadyDone ? View.VISIBLE : View.GONE);
         mActionFinish.setVisibility((mStepNumber == STEP_3) ? View.VISIBLE : View.GONE);
     }

     static final class SetupStep implements View.OnClickListener {
         public final int mStepNo;
         private final View mStepView;
         private final TextView mBulletView;
         private final int mActivatedColor;
         private final int mDeactivatedColor;
         private final String mInstruction;
         private final String mFinishedInstruction;
         private final TextView mActionLabel;
         private Runnable mAction;

         public SetupStep(final int stepNo, final String applicationName, final TextView bulletView,
                 final View stepView, final int title, final int instruction,
                 final int finishedInstruction, final int actionIcon, final int actionLabel) {
             mStepNo = stepNo;
             mStepView = stepView;
             mBulletView = bulletView;
             final Resources res = stepView.getResources();
             mActivatedColor = res.getColor(R.color.setup_text_action);
             mDeactivatedColor = res.getColor(R.color.setup_text_dark);

             final TextView titleView = (TextView)mStepView.findViewById(R.id.setup_step_title);
             titleView.setText(res.getString(title, applicationName));
             mInstruction = (instruction == 0) ? null
                     : res.getString(instruction, applicationName);
             mFinishedInstruction = (finishedInstruction == 0) ? null
                     : res.getString(finishedInstruction, applicationName);

             mActionLabel = (TextView)mStepView.findViewById(R.id.setup_step_action_label);
             mActionLabel.setText(res.getString(actionLabel));
             if (actionIcon == 0) {
                 final int paddingEnd = ViewCompatUtils.getPaddingEnd(mActionLabel);
                 ViewCompatUtils.setPaddingRelative(mActionLabel, paddingEnd, 0, paddingEnd, 0);
             } else {
                 TextViewCompatUtils.setCompoundDrawablesRelativeWithIntrinsicBounds(
                         mActionLabel, res.getDrawable(actionIcon), null, null, null);
             }
         }

         public void setEnabled(final boolean enabled, final boolean isStepActionAlreadyDone) {
             mStepView.setVisibility(enabled ? View.VISIBLE : View.GONE);
             mBulletView.setTextColor(enabled ? mActivatedColor : mDeactivatedColor);
             final TextView instructionView = (TextView)mStepView.findViewById(
                     R.id.setup_step_instruction);
             instructionView.setText(isStepActionAlreadyDone ? mFinishedInstruction : mInstruction);
             mActionLabel.setVisibility(isStepActionAlreadyDone ? View.GONE : View.VISIBLE);
         }

         public void setAction(final Runnable action) {
             mActionLabel.setOnClickListener(this);
             mAction = action;
         }

         @Override
         public void onClick(final View v) {
             if (v == mActionLabel && mAction != null) {
                 mAction.run();
                 return;
             }
         }
     }

     static final class SetupStepGroup {
         private final SetupStepIndicatorView mIndicatorView;
         private final ArrayList<SetupStep> mGroup = CollectionUtils.newArrayList();

         public SetupStepGroup(final SetupStepIndicatorView indicatorView) {
             mIndicatorView = indicatorView;
         }

         public void addStep(final SetupStep step) {
             mGroup.add(step);
         }

         public void enableStep(final int enableStepNo, final boolean isStepActionAlreadyDone) {
             for (final SetupStep step : mGroup) {
                 step.setEnabled(step.mStepNo == enableStepNo, isStepActionAlreadyDone);
             }
             mIndicatorView.setIndicatorPosition(enableStepNo - STEP_1, mGroup.size());
         }
     }
 }
	/*
	* Copyright (C) 2013 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 com.android.inputmethod.latin.setup;

	import android.app.Activity;
	import android.content.ContentResolver;
	import android.content.Intent;
	import android.content.res.Resources;
	import android.media.MediaPlayer;
	import android.net.Uri;
	import android.os.Bundle;
	import android.os.Message;
	import android.provider.Settings;
	import android.util.Log;
	import android.view.View;
	import android.view.inputmethod.InputMethodInfo;
	import android.widget.ImageView;
	import android.widget.TextView;
	import android.widget.VideoView;

	import com.android.inputmethod.compat.TextViewCompatUtils;
	import com.android.inputmethod.compat.ViewCompatUtils;
	import com.android.inputmethod.latin.CollectionUtils;
	import com.android.inputmethod.latin.R;
	import com.android.inputmethod.latin.RichInputMethodManager;
	import com.android.inputmethod.latin.SettingsActivity;
	import com.android.inputmethod.latin.StaticInnerHandlerWrapper;

	import java.util.ArrayList;

	// TODO: Use Fragment to implement welcome screen and setup steps.
	public final class SetupWizardActivity extends Activity implements View.OnClickListener {
	static final String TAG = SetupWizardActivity.class.getSimpleName();

	private static final boolean ENABLE_WELCOME_VIDEO = true;

	private View mSetupWizard;
	private View mWelcomeScreen;
	private View mSetupScreen;
	private Uri mWelcomeVideoUri;
	private VideoView mWelcomeVideoView;
	private ImageView mWelcomeImageView;
	private View mActionStart;
	private View mActionNext;
	private TextView mStep1Bullet;
	private TextView mActionFinish;
	private SetupStepGroup mSetupStepGroup;
	private static final String STATE_STEP = "step";
	private int mStepNumber;
	private static final int STEP_WELCOME = 0;
	private static final int STEP_1 = 1;
	private static final int STEP_2 = 2;
	private static final int STEP_3 = 3;
	private static final int STEP_LAUNCHING_IME_SETTINGS = 4;
	private static final int STEP_BACK_FROM_IME_SETTINGS = 5;

	final SettingsPoolingHandler mHandler = new SettingsPoolingHandler(this);

	static final class SettingsPoolingHandler
	extends StaticInnerHandlerWrapper<SetupWizardActivity> {
	private static final int MSG_POLLING_IME_SETTINGS = 0;
	private static final long IME_SETTINGS_POLLING_INTERVAL = 200;

	public SettingsPoolingHandler(final SetupWizardActivity outerInstance) {
	super(outerInstance);
	}

	@Override
	public void handleMessage(final Message msg) {
	final SetupWizardActivity setupWizardActivity = getOuterInstance();
	if (setupWizardActivity == null) {
	return;
	}
	switch (msg.what) {
	case MSG_POLLING_IME_SETTINGS:
	if (SetupActivity.isThisImeEnabled(setupWizardActivity)) {
	setupWizardActivity.invokeSetupWizardOfThisIme();
	return;
	}
	startPollingImeSettings();
	break;
	}
	}

	public void startPollingImeSettings() {
	sendMessageDelayed(obtainMessage(MSG_POLLING_IME_SETTINGS),
	IME_SETTINGS_POLLING_INTERVAL);
	}

	public void cancelPollingImeSettings() {
	removeMessages(MSG_POLLING_IME_SETTINGS);
	}
	}

	@Override
	protected void onCreate(final Bundle savedInstanceState) {
	setTheme(android.R.style.Theme_Translucent_NoTitleBar);
	super.onCreate(savedInstanceState);

	setContentView(R.layout.setup_wizard);
	mSetupWizard = findViewById(R.id.setup_wizard);

	RichInputMethodManager.init(this);

	if (savedInstanceState == null) {
	mStepNumber = determineSetupStepNumberFromLauncher();
	} else {
	mStepNumber = savedInstanceState.getInt(STATE_STEP);
	}

	final String applicationName = getResources().getString(getApplicationInfo().labelRes);
	mWelcomeScreen = findViewById(R.id.setup_welcome_screen);
	final TextView welcomeTitle = (TextView)findViewById(R.id.setup_welcome_title);
	welcomeTitle.setText(getString(R.string.setup_welcome_title, applicationName));

	mSetupScreen = findViewById(R.id.setup_steps_screen);
	final TextView stepsTitle = (TextView)findViewById(R.id.setup_title);
	stepsTitle.setText(getString(R.string.setup_steps_title, applicationName));

	final SetupStepIndicatorView indicatorView =
	(SetupStepIndicatorView)findViewById(R.id.setup_step_indicator);
	mSetupStepGroup = new SetupStepGroup(indicatorView);

	mStep1Bullet = (TextView)findViewById(R.id.setup_step1_bullet);
	mStep1Bullet.setOnClickListener(this);
	final SetupStep step1 = new SetupStep(STEP_1, applicationName,
	mStep1Bullet, findViewById(R.id.setup_step1),
	R.string.setup_step1_title, R.string.setup_step1_instruction,
	R.string.setup_step1_finished_instruction, R.drawable.ic_setup_step1,
	R.string.setup_step1_action);
	step1.setAction(new Runnable() {
	@Override
	public void run() {
	invokeLanguageAndInputSettings();
	mHandler.startPollingImeSettings();
	}
	});
	mSetupStepGroup.addStep(step1);

	final SetupStep step2 = new SetupStep(STEP_2, applicationName,
	(TextView)findViewById(R.id.setup_step2_bullet), findViewById(R.id.setup_step2),
	R.string.setup_step2_title, R.string.setup_step2_instruction,
	0 /* finishedInstruction */, R.drawable.ic_setup_step2,
	R.string.setup_step2_action);
	step2.setAction(new Runnable() {
	@Override
	public void run() {
	// Invoke input method picker.
	RichInputMethodManager.getInstance().getInputMethodManager()
	.showInputMethodPicker();
	}
	});
	mSetupStepGroup.addStep(step2);

	final SetupStep step3 = new SetupStep(STEP_3, applicationName,
	(TextView)findViewById(R.id.setup_step3_bullet), findViewById(R.id.setup_step3),
	R.string.setup_step3_title, R.string.setup_step3_instruction,
	0 /* finishedInstruction */, R.drawable.ic_setup_step3,
	R.string.setup_step3_action);
	step3.setAction(new Runnable() {
	@Override
	public void run() {
	invokeSubtypeEnablerOfThisIme();
	}
	});
	mSetupStepGroup.addStep(step3);

	mWelcomeVideoUri = new Uri.Builder()
	.scheme(ContentResolver.SCHEME_ANDROID_RESOURCE)
	.authority(getPackageName())
	.path(Integer.toString(R.raw.setup_welcome_video))
	.build();
	final VideoView welcomeVideoView = (VideoView)findViewById(R.id.setup_welcome_video);
	welcomeVideoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
	@Override
	public void onPrepared(final MediaPlayer mp) {
	// Now VideoView has been laid-out and ready to play, remove background of it to
	// reveal the video.
	welcomeVideoView.setBackgroundResource(0);
	mp.setLooping(true);
	}
	});
	welcomeVideoView.setOnErrorListener(new MediaPlayer.OnErrorListener() {
	@Override
	public boolean onError(final MediaPlayer mp, final int what, final int extra) {
	Log.e(TAG, "Playing welcome video causes error: what=" + what + " extra=" + extra);
	hideWelcomeVideoAndShowWelcomeImage();
	return true;
	}
	});
	mWelcomeVideoView = welcomeVideoView;
	mWelcomeImageView = (ImageView)findViewById(R.id.setup_welcome_image);

	mActionStart = findViewById(R.id.setup_start_label);
	mActionStart.setOnClickListener(this);
	mActionNext = findViewById(R.id.setup_next);
	mActionNext.setOnClickListener(this);
	mActionFinish = (TextView)findViewById(R.id.setup_finish);
	TextViewCompatUtils.setCompoundDrawablesRelativeWithIntrinsicBounds(mActionFinish,
	getResources().getDrawable(R.drawable.ic_setup_finish), null, null, null);
	mActionFinish.setOnClickListener(this);
	}

	@Override
	public void onClick(final View v) {
	if (v == mActionFinish) {
	finish();
	return;
	}
	final int currentStep = determineSetupStepNumber();
	final int nextStep;
	if (v == mActionStart) {
	nextStep = STEP_1;
	} else if (v == mActionNext) {
	nextStep = mStepNumber + 1;
	} else if (v == mStep1Bullet && currentStep == STEP_2) {
	nextStep = STEP_1;
	} else {
	nextStep = mStepNumber;
	}
	if (mStepNumber != nextStep) {
	mStepNumber = nextStep;
	updateSetupStepView();
	}
	}

	void invokeSetupWizardOfThisIme() {
	final Intent intent = new Intent();
	intent.setClass(this, SetupWizardActivity.class);
	intent.setFlags(Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
	\| Intent.FLAG_ACTIVITY_SINGLE_TOP
	\| Intent.FLAG_ACTIVITY_CLEAR_TOP);
	startActivity(intent);
	}

	private void invokeSettingsOfThisIme() {
	final Intent intent = new Intent();
	intent.setClass(this, SettingsActivity.class);
	intent.setFlags(Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED
	\| Intent.FLAG_ACTIVITY_CLEAR_TOP);
	startActivity(intent);
	}

	void invokeLanguageAndInputSettings() {
	final Intent intent = new Intent();
	intent.setAction(Settings.ACTION_INPUT_METHOD_SETTINGS);
	intent.addCategory(Intent.CATEGORY_DEFAULT);
	startActivity(intent);
	}

	void invokeSubtypeEnablerOfThisIme() {
	final InputMethodInfo imi =
	RichInputMethodManager.getInstance().getInputMethodInfoOfThisIme();
	final Intent intent = new Intent();
	intent.setAction(Settings.ACTION_INPUT_METHOD_SUBTYPE_SETTINGS);
	intent.addCategory(Intent.CATEGORY_DEFAULT);
	intent.putExtra(Settings.EXTRA_INPUT_METHOD_ID, imi.getId());
	startActivity(intent);
	}

	private int determineSetupStepNumberFromLauncher() {
	final int stepNumber = determineSetupStepNumber();
	if (stepNumber == STEP_1) {
	return STEP_WELCOME;
	}
	if (stepNumber == STEP_3) {
	return STEP_LAUNCHING_IME_SETTINGS;
	}
	return stepNumber;
	}

	private int determineSetupStepNumber() {
	mHandler.cancelPollingImeSettings();
	if (!SetupActivity.isThisImeEnabled(this)) {
	return STEP_1;
	}
	if (!SetupActivity.isThisImeCurrent(this)) {
	return STEP_2;
	}
	return STEP_3;
	}

	@Override
	protected void onSaveInstanceState(final Bundle outState) {
	super.onSaveInstanceState(outState);
	outState.putInt(STATE_STEP, mStepNumber);
	}

	@Override
	protected void onRestoreInstanceState(final Bundle savedInstanceState) {
	super.onRestoreInstanceState(savedInstanceState);
	mStepNumber = savedInstanceState.getInt(STATE_STEP);
	}

	private static boolean isInSetupSteps(final int stepNumber) {
	return stepNumber >= STEP_1 && stepNumber <= STEP_3;
	}

	@Override
	protected void onRestart() {
	super.onRestart();
	if (isInSetupSteps(mStepNumber)) {
	mStepNumber = determineSetupStepNumber();
	}
	}

	@Override
	protected void onResume() {
	super.onResume();
	if (mStepNumber == STEP_LAUNCHING_IME_SETTINGS) {
	// Prevent white screen flashing while launching settings activity.
	mSetupWizard.setVisibility(View.INVISIBLE);
	invokeSettingsOfThisIme();
	mStepNumber = STEP_BACK_FROM_IME_SETTINGS;
	return;
	}
	if (mStepNumber == STEP_BACK_FROM_IME_SETTINGS) {
	finish();
	return;
	}
	updateSetupStepView();
	}

	@Override
	public void onBackPressed() {
	if (mStepNumber == STEP_1) {
	mStepNumber = STEP_WELCOME;
	updateSetupStepView();
	return;
	}
	super.onBackPressed();
	}

	void hideWelcomeVideoAndShowWelcomeImage() {
	mWelcomeVideoView.setVisibility(View.GONE);
	mWelcomeImageView.setImageResource(R.raw.setup_welcome_image);
	mWelcomeImageView.setVisibility(View.VISIBLE);
	}

	private void showAndStartWelcomeVideo() {
	mWelcomeVideoView.setVisibility(View.VISIBLE);
	mWelcomeVideoView.setVideoURI(mWelcomeVideoUri);
	mWelcomeVideoView.start();
	}

	private void hideAndStopWelcomeVideo() {
	mWelcomeVideoView.stopPlayback();
	mWelcomeVideoView.setVisibility(View.GONE);
	}

	@Override
	protected void onPause() {
	hideAndStopWelcomeVideo();
	super.onPause();
	}

	@Override
	public void onWindowFocusChanged(final boolean hasFocus) {
	super.onWindowFocusChanged(hasFocus);
	if (hasFocus && isInSetupSteps(mStepNumber)) {
	mStepNumber = determineSetupStepNumber();
	updateSetupStepView();
	}
	}

	private void updateSetupStepView() {
	mSetupWizard.setVisibility(View.VISIBLE);
	final boolean welcomeScreen = (mStepNumber == STEP_WELCOME);
	mWelcomeScreen.setVisibility(welcomeScreen ? View.VISIBLE : View.GONE);
	mSetupScreen.setVisibility(welcomeScreen ? View.GONE : View.VISIBLE);
	if (welcomeScreen) {
	if (ENABLE_WELCOME_VIDEO) {
	showAndStartWelcomeVideo();
	} else {
	hideWelcomeVideoAndShowWelcomeImage();
	}
	return;
	}
	hideAndStopWelcomeVideo();
	final boolean isStepActionAlreadyDone = mStepNumber < determineSetupStepNumber();
	mSetupStepGroup.enableStep(mStepNumber, isStepActionAlreadyDone);
	mActionNext.setVisibility(isStepActionAlreadyDone ? View.VISIBLE : View.GONE);
	mActionFinish.setVisibility((mStepNumber == STEP_3) ? View.VISIBLE : View.GONE);
	}

	static final class SetupStep implements View.OnClickListener {
	public final int mStepNo;
	private final View mStepView;
	private final TextView mBulletView;
	private final int mActivatedColor;
	private final int mDeactivatedColor;
	private final String mInstruction;
	private final String mFinishedInstruction;
	private final TextView mActionLabel;
	private Runnable mAction;

	public SetupStep(final int stepNo, final String applicationName, final TextView bulletView,
	final View stepView, final int title, final int instruction,
	final int finishedInstruction, final int actionIcon, final int actionLabel) {
	mStepNo = stepNo;
	mStepView = stepView;
	mBulletView = bulletView;
	final Resources res = stepView.getResources();
	mActivatedColor = res.getColor(R.color.setup_text_action);
	mDeactivatedColor = res.getColor(R.color.setup_text_dark);

	final TextView titleView = (TextView)mStepView.findViewById(R.id.setup_step_title);
	titleView.setText(res.getString(title, applicationName));
	mInstruction = (instruction == 0) ? null
	: res.getString(instruction, applicationName);
	mFinishedInstruction = (finishedInstruction == 0) ? null
	: res.getString(finishedInstruction, applicationName);

	mActionLabel = (TextView)mStepView.findViewById(R.id.setup_step_action_label);
	mActionLabel.setText(res.getString(actionLabel));
	if (actionIcon == 0) {
	final int paddingEnd = ViewCompatUtils.getPaddingEnd(mActionLabel);
	ViewCompatUtils.setPaddingRelative(mActionLabel, paddingEnd, 0, paddingEnd, 0);
	} else {
	TextViewCompatUtils.setCompoundDrawablesRelativeWithIntrinsicBounds(
	mActionLabel, res.getDrawable(actionIcon), null, null, null);
	}
	}

	public void setEnabled(final boolean enabled, final boolean isStepActionAlreadyDone) {
	mStepView.setVisibility(enabled ? View.VISIBLE : View.GONE);
	mBulletView.setTextColor(enabled ? mActivatedColor : mDeactivatedColor);
	final TextView instructionView = (TextView)mStepView.findViewById(
	R.id.setup_step_instruction);
	instructionView.setText(isStepActionAlreadyDone ? mFinishedInstruction : mInstruction);
	mActionLabel.setVisibility(isStepActionAlreadyDone ? View.GONE : View.VISIBLE);
	}

	public void setAction(final Runnable action) {
	mActionLabel.setOnClickListener(this);
	mAction = action;
	}

	@Override
	public void onClick(final View v) {
	if (v == mActionLabel && mAction != null) {
	mAction.run();
	return;
	}
	}
	}

	static final class SetupStepGroup {
	private final SetupStepIndicatorView mIndicatorView;
	private final ArrayList<SetupStep> mGroup = CollectionUtils.newArrayList();

	public SetupStepGroup(final SetupStepIndicatorView indicatorView) {
	mIndicatorView = indicatorView;
	}

	public void addStep(final SetupStep step) {
	mGroup.add(step);
	}

	public void enableStep(final int enableStepNo, final boolean isStepActionAlreadyDone) {
	for (final SetupStep step : mGroup) {
	step.setEnabled(step.mStepNo == enableStepNo, isStepActionAlreadyDone);
	}
	mIndicatorView.setIndicatorPosition(enableStepNo - STEP_1, mGroup.size());
	}
	}
	}