third_party/android_media/java/src/org/chromium/third_party/android/media/MediaController.java - chromium/src - 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 org.chromium.third_party.android.media;

 import android.content.Context;
 import android.support.v4.media.TransportController;
 import android.support.v4.media.TransportMediator;
 import android.support.v4.media.TransportStateListener;
 import android.util.AttributeSet;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.accessibility.AccessibilityEvent;
 import android.view.accessibility.AccessibilityNodeInfo;
 import android.widget.FrameLayout;
 import android.widget.ImageButton;
 import android.widget.SeekBar;
 import android.widget.TextView;

 import org.chromium.third_party.android.media.R;

 import java.util.Formatter;
 import java.util.Locale;

 /**
  * Helper for implementing media controls in an application.
  * We use this custom version instead of {@link android.widget.MediaController} so that we can
  * customize the look as we want. This file is taken directly from the public Android sample for
  * supportv4, with tiny bug fixes.
  */
 public class MediaController extends FrameLayout {

     private TransportController mController;
     private Context mContext;
     private ViewGroup mProgressGroup;
     private SeekBar mProgressBar;
     private TextView mEndTime, mCurrentTime;
     private boolean mDragging;
     private boolean mUseFastForward;
     private boolean mListenersSet;
     private boolean mShowNext, mShowPrev;
     private View.OnClickListener mNextListener, mPrevListener;
     private StringBuilder mFormatBuilder;
     private Formatter mFormatter;
     private ImageButton mPauseButton;
     private ImageButton mFfwdButton;
     private ImageButton mRewButton;
     private ImageButton mNextButton;
     private ImageButton mPrevButton;

     private TransportStateListener mStateListener = new TransportStateListener() {
         @Override
         public void onPlayingChanged(TransportController controller) {
             updatePausePlay();
         }
         @Override
         public void onTransportControlsChanged(TransportController controller) {
             updateButtons();
         }
     };

     public MediaController(Context context, AttributeSet attrs) {
         super(context, attrs);
         mContext = context;
         mUseFastForward = true;
         LayoutInflater inflate = (LayoutInflater)
                 mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
         inflate.inflate(R.layout.media_controller, this, true);
         initControllerView();
     }

     public MediaController(Context context, boolean useFastForward) {
         super(context);
         mContext = context;
         mUseFastForward = useFastForward;
     }

     public MediaController(Context context) {
         this(context, true);
     }

     public void setMediaPlayer(TransportController controller) {
         if (getWindowToken() != null) {
             if (mController != null) {
                 mController.unregisterStateListener(mStateListener);
             }
             if (controller != null) {
                 controller.registerStateListener(mStateListener);
             }
         }
         mController = controller;
         updatePausePlay();
     }

     @Override
     protected void onAttachedToWindow() {
         super.onAttachedToWindow();
         if (mController != null) {
             mController.registerStateListener(mStateListener);
         }
     }

     @Override
     protected void onDetachedFromWindow() {
         super.onDetachedFromWindow();
         if (mController != null) {
             mController.unregisterStateListener(mStateListener);
         }
     }

     private void initControllerView() {
         mPauseButton = (ImageButton) findViewById(R.id.pause);
         if (mPauseButton != null) {
             mPauseButton.requestFocus();
             mPauseButton.setOnClickListener(mPauseListener);
         }

         mFfwdButton = (ImageButton) findViewById(R.id.ffwd);
         if (mFfwdButton != null) {
             mFfwdButton.setOnClickListener(mFfwdListener);
             mFfwdButton.setVisibility(mUseFastForward ? View.VISIBLE : View.GONE);
         }

         mRewButton = (ImageButton) findViewById(R.id.rew);
         if (mRewButton != null) {
             mRewButton.setOnClickListener(mRewListener);
             mRewButton.setVisibility(mUseFastForward ? View.VISIBLE : View.GONE);
         }

         // By default these are hidden. They will be enabled when setPrevNextListeners() is called
         mNextButton = (ImageButton) findViewById(R.id.next);
         if (mNextButton != null && !mListenersSet) {
             mNextButton.setVisibility(View.GONE);
         }
         mPrevButton = (ImageButton) findViewById(R.id.prev);
         if (mPrevButton != null && !mListenersSet) {
             mPrevButton.setVisibility(View.GONE);
         }

         mProgressGroup = (ViewGroup) findViewById(R.id.mediacontroller_progress_container);

         if (mProgressGroup != null) {
             mProgressBar = (SeekBar) mProgressGroup.findViewById(R.id.mediacontroller_progress_bar);
             if (mProgressBar != null) {
                 mProgressBar.setOnSeekBarChangeListener(mSeekListener);
                 mProgressBar.setMax(1000);
             }
         }

         mEndTime = (TextView) findViewById(R.id.time);
         mCurrentTime = (TextView) findViewById(R.id.time_current);
         mFormatBuilder = new StringBuilder();
         mFormatter = new Formatter(mFormatBuilder, Locale.getDefault());

         installPrevNextListeners();
     }

     /**
      * Disable pause or seek buttons if the stream cannot be paused or seeked.
      * This requires the control interface to be a MediaPlayerControlExt
      */
     void updateButtons() {
         int flags = mController.getTransportControlFlags();
         boolean enabled = isEnabled();
         if (mPauseButton != null) {
             boolean needPlayPauseButton = (flags & TransportMediator.FLAG_KEY_MEDIA_PAUSE) != 0 ||
                                           (flags & TransportMediator.FLAG_KEY_MEDIA_PLAY) != 0;
             mPauseButton.setEnabled(enabled && needPlayPauseButton);
         }
         if (mRewButton != null) {
             mRewButton.setEnabled(enabled &&
                                   (flags & TransportMediator.FLAG_KEY_MEDIA_REWIND) != 0);
         }
         if (mFfwdButton != null) {
             mFfwdButton.setEnabled(enabled &&
                     (flags & TransportMediator.FLAG_KEY_MEDIA_FAST_FORWARD) != 0);
         }
         if (mPrevButton != null) {
             mShowPrev = (flags & TransportMediator.FLAG_KEY_MEDIA_PREVIOUS) != 0
                     || mPrevListener != null;
             mPrevButton.setEnabled(enabled && mShowPrev);
         }
         if (mNextButton != null) {
             mShowNext = (flags & TransportMediator.FLAG_KEY_MEDIA_NEXT) != 0
                     || mNextListener != null;
             mNextButton.setEnabled(enabled && mShowNext);
         }
     }

     public void refresh() {
         updateProgress();
         updateButtons();
         updatePausePlay();
     }

     private String stringForTime(int timeMs) {
         int totalSeconds = timeMs / 1000;

         int seconds = totalSeconds % 60;
         int minutes = (totalSeconds / 60) % 60;
         int hours   = totalSeconds / 3600;

         mFormatBuilder.setLength(0);
         if (hours > 0) {
             return mFormatter.format("%d:%02d:%02d", hours, minutes, seconds).toString();
         } else {
             return mFormatter.format("%02d:%02d", minutes, seconds).toString();
         }
     }

     public long updateProgress() {
         if (mController == null || mDragging) {
             return 0;
         }
         long position = mController.getCurrentPosition();
         long duration = mController.getDuration();
         if (duration <= 0) {
             // If there is no valid duration, hide the progress bar and time indicators.
             if (mProgressGroup != null) mProgressGroup.setVisibility(View.INVISIBLE);
         } else if (mProgressBar != null) {
             if (mProgressGroup != null) mProgressGroup.setVisibility(View.VISIBLE);
             // use long to avoid overflow
             long pos = 1000L * position / duration;
             mProgressBar.setProgress( (int) pos);

             int percent = mController.getBufferPercentage();
             mProgressBar.setSecondaryProgress(percent * 10);
         }

         if (mEndTime != null)
             mEndTime.setText(stringForTime((int)duration));
         if (mCurrentTime != null)
             mCurrentTime.setText(stringForTime((int)position));

         return position;
     }

     private View.OnClickListener mPauseListener = new View.OnClickListener() {
         @Override
         public void onClick(View v) {
             doPauseResume();
         }
     };

     private void updatePausePlay() {
         if (mPauseButton == null)
             return;

         if (mController.isPlaying()) {
             mPauseButton.setImageResource(android.R.drawable.ic_media_pause);
         } else {
             mPauseButton.setImageResource(android.R.drawable.ic_media_play);
         }
     }

     private void doPauseResume() {
         if (mController.isPlaying()) {
             mController.pausePlaying();
         } else {
             mController.startPlaying();
         }
         updatePausePlay();
     }

     // There are two scenarios that can trigger the seekbar listener to trigger:
     //
     // The first is the user using the touchpad to adjust the posititon of the
     // seekbar's thumb. In this case onStartTrackingTouch is called followed by
     // a number of onProgressChanged notifications, concluded by onStopTrackingTouch.
     // We're setting the field "mDragging" to true for the duration of the dragging
     // session to avoid jumps in the position in case of ongoing playback.
     //
     // The second scenario involves the user operating the scroll ball, in this
     // case there WON'T BE onStartTrackingTouch/onStopTrackingTouch notifications,
     // we will simply apply the updated position without suspending regular updates.
     private SeekBar.OnSeekBarChangeListener mSeekListener = new SeekBar.OnSeekBarChangeListener() {
         @Override
         public void onStartTrackingTouch(SeekBar bar) {
             mDragging = true;
         }

         @Override
         public void onProgressChanged(SeekBar bar, int progress, boolean fromuser) {
             if (!fromuser) {
                 // We're not interested in programmatically generated changes to
                 // the progress bar's position.
                 return;
             }

             long duration = mController.getDuration();
             long newposition = (duration * progress) / 1000L;
             mController.seekTo((int) newposition);
             if (mCurrentTime != null)
                 mCurrentTime.setText(stringForTime( (int) newposition));
         }

         @Override
         public void onStopTrackingTouch(SeekBar bar) {
             mDragging = false;
             updateProgress();
             updatePausePlay();
         }
     };

     @Override
     public void setEnabled(boolean enabled) {
         super.setEnabled(enabled);
         updateButtons();
     }

     @Override
     public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
         super.onInitializeAccessibilityEvent(event);
         event.setClassName(MediaController.class.getName());
     }

     @Override
     public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
         super.onInitializeAccessibilityNodeInfo(info);
         info.setClassName(MediaController.class.getName());
     }

     private View.OnClickListener mRewListener = new View.OnClickListener() {
         @Override
         public void onClick(View v) {
             long pos = mController.getCurrentPosition();
             pos -= 5000; // milliseconds
             mController.seekTo(pos);
             updateProgress();
         }
     };

     private View.OnClickListener mFfwdListener = new View.OnClickListener() {
         @Override
         public void onClick(View v) {
             long pos = mController.getCurrentPosition();
             pos += 15000; // milliseconds
             mController.seekTo(pos);
             updateProgress();
         }
     };

     private void installPrevNextListeners() {
         if (mNextButton != null) {
             mNextButton.setOnClickListener(mNextListener);
             mNextButton.setEnabled(mShowNext);
         }

         if (mPrevButton != null) {
             mPrevButton.setOnClickListener(mPrevListener);
             mPrevButton.setEnabled(mShowPrev);
         }
     }

     public void setPrevNextListeners(View.OnClickListener next, View.OnClickListener prev) {
         mNextListener = next;
         mPrevListener = prev;
         mListenersSet = true;

         installPrevNextListeners();

         if (mNextButton != null) {
             mNextButton.setVisibility(View.VISIBLE);
             mShowNext = true;
         }
         if (mPrevButton != null) {
             mPrevButton.setVisibility(View.VISIBLE);
             mShowPrev = true;
         }
     }
 }
	/*
	* 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 org.chromium.third_party.android.media;

	import android.content.Context;
	import android.support.v4.media.TransportController;
	import android.support.v4.media.TransportMediator;
	import android.support.v4.media.TransportStateListener;
	import android.util.AttributeSet;
	import android.view.LayoutInflater;
	import android.view.View;
	import android.view.ViewGroup;
	import android.view.accessibility.AccessibilityEvent;
	import android.view.accessibility.AccessibilityNodeInfo;
	import android.widget.FrameLayout;
	import android.widget.ImageButton;
	import android.widget.SeekBar;
	import android.widget.TextView;

	import org.chromium.third_party.android.media.R;

	import java.util.Formatter;
	import java.util.Locale;

	/**
	* Helper for implementing media controls in an application.
	* We use this custom version instead of {@link android.widget.MediaController} so that we can
	* customize the look as we want. This file is taken directly from the public Android sample for
	* supportv4, with tiny bug fixes.
	*/
	public class MediaController extends FrameLayout {

	private TransportController mController;
	private Context mContext;
	private ViewGroup mProgressGroup;
	private SeekBar mProgressBar;
	private TextView mEndTime, mCurrentTime;
	private boolean mDragging;
	private boolean mUseFastForward;
	private boolean mListenersSet;
	private boolean mShowNext, mShowPrev;
	private View.OnClickListener mNextListener, mPrevListener;
	private StringBuilder mFormatBuilder;
	private Formatter mFormatter;
	private ImageButton mPauseButton;
	private ImageButton mFfwdButton;
	private ImageButton mRewButton;
	private ImageButton mNextButton;
	private ImageButton mPrevButton;

	private TransportStateListener mStateListener = new TransportStateListener() {
	@Override
	public void onPlayingChanged(TransportController controller) {
	updatePausePlay();
	}
	@Override
	public void onTransportControlsChanged(TransportController controller) {
	updateButtons();
	}
	};

	public MediaController(Context context, AttributeSet attrs) {
	super(context, attrs);
	mContext = context;
	mUseFastForward = true;
	LayoutInflater inflate = (LayoutInflater)
	mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
	inflate.inflate(R.layout.media_controller, this, true);
	initControllerView();
	}

	public MediaController(Context context, boolean useFastForward) {
	super(context);
	mContext = context;
	mUseFastForward = useFastForward;
	}

	public MediaController(Context context) {
	this(context, true);
	}

	public void setMediaPlayer(TransportController controller) {
	if (getWindowToken() != null) {
	if (mController != null) {
	mController.unregisterStateListener(mStateListener);
	}
	if (controller != null) {
	controller.registerStateListener(mStateListener);
	}
	}
	mController = controller;
	updatePausePlay();
	}

	@Override
	protected void onAttachedToWindow() {
	super.onAttachedToWindow();
	if (mController != null) {
	mController.registerStateListener(mStateListener);
	}
	}

	@Override
	protected void onDetachedFromWindow() {
	super.onDetachedFromWindow();
	if (mController != null) {
	mController.unregisterStateListener(mStateListener);
	}
	}

	private void initControllerView() {
	mPauseButton = (ImageButton) findViewById(R.id.pause);
	if (mPauseButton != null) {
	mPauseButton.requestFocus();
	mPauseButton.setOnClickListener(mPauseListener);
	}

	mFfwdButton = (ImageButton) findViewById(R.id.ffwd);
	if (mFfwdButton != null) {
	mFfwdButton.setOnClickListener(mFfwdListener);
	mFfwdButton.setVisibility(mUseFastForward ? View.VISIBLE : View.GONE);
	}

	mRewButton = (ImageButton) findViewById(R.id.rew);
	if (mRewButton != null) {
	mRewButton.setOnClickListener(mRewListener);
	mRewButton.setVisibility(mUseFastForward ? View.VISIBLE : View.GONE);
	}

	// By default these are hidden. They will be enabled when setPrevNextListeners() is called
	mNextButton = (ImageButton) findViewById(R.id.next);
	if (mNextButton != null && !mListenersSet) {
	mNextButton.setVisibility(View.GONE);
	}
	mPrevButton = (ImageButton) findViewById(R.id.prev);
	if (mPrevButton != null && !mListenersSet) {
	mPrevButton.setVisibility(View.GONE);
	}

	mProgressGroup = (ViewGroup) findViewById(R.id.mediacontroller_progress_container);

	if (mProgressGroup != null) {
	mProgressBar = (SeekBar) mProgressGroup.findViewById(R.id.mediacontroller_progress_bar);
	if (mProgressBar != null) {
	mProgressBar.setOnSeekBarChangeListener(mSeekListener);
	mProgressBar.setMax(1000);
	}
	}

	mEndTime = (TextView) findViewById(R.id.time);
	mCurrentTime = (TextView) findViewById(R.id.time_current);
	mFormatBuilder = new StringBuilder();
	mFormatter = new Formatter(mFormatBuilder, Locale.getDefault());

	installPrevNextListeners();
	}

	/**
	* Disable pause or seek buttons if the stream cannot be paused or seeked.
	* This requires the control interface to be a MediaPlayerControlExt
	*/
	void updateButtons() {
	int flags = mController.getTransportControlFlags();
	boolean enabled = isEnabled();
	if (mPauseButton != null) {
	boolean needPlayPauseButton = (flags & TransportMediator.FLAG_KEY_MEDIA_PAUSE) != 0 \|\|
	(flags & TransportMediator.FLAG_KEY_MEDIA_PLAY) != 0;
	mPauseButton.setEnabled(enabled && needPlayPauseButton);
	}
	if (mRewButton != null) {
	mRewButton.setEnabled(enabled &&
	(flags & TransportMediator.FLAG_KEY_MEDIA_REWIND) != 0);
	}
	if (mFfwdButton != null) {
	mFfwdButton.setEnabled(enabled &&
	(flags & TransportMediator.FLAG_KEY_MEDIA_FAST_FORWARD) != 0);
	}
	if (mPrevButton != null) {
	mShowPrev = (flags & TransportMediator.FLAG_KEY_MEDIA_PREVIOUS) != 0
	\|\| mPrevListener != null;
	mPrevButton.setEnabled(enabled && mShowPrev);
	}
	if (mNextButton != null) {
	mShowNext = (flags & TransportMediator.FLAG_KEY_MEDIA_NEXT) != 0
	\|\| mNextListener != null;
	mNextButton.setEnabled(enabled && mShowNext);
	}
	}

	public void refresh() {
	updateProgress();
	updateButtons();
	updatePausePlay();
	}

	private String stringForTime(int timeMs) {
	int totalSeconds = timeMs / 1000;

	int seconds = totalSeconds % 60;
	int minutes = (totalSeconds / 60) % 60;
	int hours = totalSeconds / 3600;

	mFormatBuilder.setLength(0);
	if (hours > 0) {
	return mFormatter.format("%d:%02d:%02d", hours, minutes, seconds).toString();
	} else {
	return mFormatter.format("%02d:%02d", minutes, seconds).toString();
	}
	}

	public long updateProgress() {
	if (mController == null \|\| mDragging) {
	return 0;
	}
	long position = mController.getCurrentPosition();
	long duration = mController.getDuration();
	if (duration <= 0) {
	// If there is no valid duration, hide the progress bar and time indicators.
	if (mProgressGroup != null) mProgressGroup.setVisibility(View.INVISIBLE);
	} else if (mProgressBar != null) {
	if (mProgressGroup != null) mProgressGroup.setVisibility(View.VISIBLE);
	// use long to avoid overflow
	long pos = 1000L * position / duration;
	mProgressBar.setProgress( (int) pos);

	int percent = mController.getBufferPercentage();
	mProgressBar.setSecondaryProgress(percent * 10);
	}

	if (mEndTime != null)
	mEndTime.setText(stringForTime((int)duration));
	if (mCurrentTime != null)
	mCurrentTime.setText(stringForTime((int)position));

	return position;
	}

	private View.OnClickListener mPauseListener = new View.OnClickListener() {
	@Override
	public void onClick(View v) {
	doPauseResume();
	}
	};

	private void updatePausePlay() {
	if (mPauseButton == null)
	return;

	if (mController.isPlaying()) {
	mPauseButton.setImageResource(android.R.drawable.ic_media_pause);
	} else {
	mPauseButton.setImageResource(android.R.drawable.ic_media_play);
	}
	}

	private void doPauseResume() {
	if (mController.isPlaying()) {
	mController.pausePlaying();
	} else {
	mController.startPlaying();
	}
	updatePausePlay();
	}

	// There are two scenarios that can trigger the seekbar listener to trigger:
	//
	// The first is the user using the touchpad to adjust the posititon of the
	// seekbar's thumb. In this case onStartTrackingTouch is called followed by
	// a number of onProgressChanged notifications, concluded by onStopTrackingTouch.
	// We're setting the field "mDragging" to true for the duration of the dragging
	// session to avoid jumps in the position in case of ongoing playback.
	//
	// The second scenario involves the user operating the scroll ball, in this
	// case there WON'T BE onStartTrackingTouch/onStopTrackingTouch notifications,
	// we will simply apply the updated position without suspending regular updates.
	private SeekBar.OnSeekBarChangeListener mSeekListener = new SeekBar.OnSeekBarChangeListener() {
	@Override
	public void onStartTrackingTouch(SeekBar bar) {
	mDragging = true;
	}

	@Override
	public void onProgressChanged(SeekBar bar, int progress, boolean fromuser) {
	if (!fromuser) {
	// We're not interested in programmatically generated changes to
	// the progress bar's position.
	return;
	}

	long duration = mController.getDuration();
	long newposition = (duration * progress) / 1000L;
	mController.seekTo((int) newposition);
	if (mCurrentTime != null)
	mCurrentTime.setText(stringForTime( (int) newposition));
	}

	@Override
	public void onStopTrackingTouch(SeekBar bar) {
	mDragging = false;
	updateProgress();
	updatePausePlay();
	}
	};

	@Override
	public void setEnabled(boolean enabled) {
	super.setEnabled(enabled);
	updateButtons();
	}

	@Override
	public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
	super.onInitializeAccessibilityEvent(event);
	event.setClassName(MediaController.class.getName());
	}

	@Override
	public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
	super.onInitializeAccessibilityNodeInfo(info);
	info.setClassName(MediaController.class.getName());
	}

	private View.OnClickListener mRewListener = new View.OnClickListener() {
	@Override
	public void onClick(View v) {
	long pos = mController.getCurrentPosition();
	pos -= 5000; // milliseconds
	mController.seekTo(pos);
	updateProgress();
	}
	};

	private View.OnClickListener mFfwdListener = new View.OnClickListener() {
	@Override
	public void onClick(View v) {
	long pos = mController.getCurrentPosition();
	pos += 15000; // milliseconds
	mController.seekTo(pos);
	updateProgress();
	}
	};

	private void installPrevNextListeners() {
	if (mNextButton != null) {
	mNextButton.setOnClickListener(mNextListener);
	mNextButton.setEnabled(mShowNext);
	}

	if (mPrevButton != null) {
	mPrevButton.setOnClickListener(mPrevListener);
	mPrevButton.setEnabled(mShowPrev);
	}
	}

	public void setPrevNextListeners(View.OnClickListener next, View.OnClickListener prev) {
	mNextListener = next;
	mPrevListener = prev;
	mListenersSet = true;

	installPrevNextListeners();

	if (mNextButton != null) {
	mNextButton.setVisibility(View.VISIBLE);
	mShowNext = true;
	}
	if (mPrevButton != null) {
	mPrevButton.setVisibility(View.VISIBLE);
	mShowPrev = true;
	}
	}
	}