java/com/android/incallui/incall/impl/ButtonController.java - platform/packages/apps/Dialer - Gitiles

 /*
  * Copyright (C) 2016 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.incallui.incall.impl;

 import android.support.annotation.CallSuper;
 import android.support.annotation.DrawableRes;
 import android.support.annotation.NonNull;
 import android.support.annotation.StringRes;
 import android.telecom.CallAudioState;
 import android.text.TextUtils;
 import android.view.View;
 import android.view.View.OnClickListener;
 import com.android.dialer.common.Assert;
 import com.android.incallui.incall.impl.CheckableLabeledButton.OnCheckedChangeListener;
 import com.android.incallui.incall.protocol.InCallButtonIds;
 import com.android.incallui.incall.protocol.InCallButtonUiDelegate;
 import com.android.incallui.incall.protocol.InCallScreenDelegate;

 /** Manages a single button. */
 interface ButtonController {

   boolean isEnabled();

   void setEnabled(boolean isEnabled);

   boolean isAllowed();

   void setAllowed(boolean isAllowed);

   void setChecked(boolean isChecked);

   @InCallButtonIds
   int getInCallButtonId();

   void setButton(CheckableLabeledButton button);

   final class Controllers {

     private static void resetButton(CheckableLabeledButton button) {
       if (button != null) {
         button.setOnCheckedChangeListener(null);
         button.setOnClickListener(null);
       }
     }
   }

   abstract class CheckableButtonController implements ButtonController, OnCheckedChangeListener {

     @NonNull protected final InCallButtonUiDelegate delegate;
     @InCallButtonIds protected final int buttonId;
     @StringRes protected final int checkedDescription;
     @StringRes protected final int uncheckedDescription;
     protected boolean isEnabled;
     protected boolean isAllowed;
     protected boolean isChecked;
     protected CheckableLabeledButton button;

     protected CheckableButtonController(
         @NonNull InCallButtonUiDelegate delegate,
         @InCallButtonIds int buttonId,
         @StringRes int checkedContentDescription,
         @StringRes int uncheckedContentDescription) {
       Assert.isNotNull(delegate);
       this.delegate = delegate;
       this.buttonId = buttonId;
       this.checkedDescription = checkedContentDescription;
       this.uncheckedDescription = uncheckedContentDescription;
     }

     @Override
     public boolean isEnabled() {
       return isEnabled;
     }

     @Override
     public void setEnabled(boolean isEnabled) {
       this.isEnabled = isEnabled;
       if (button != null) {
         button.setEnabled(isEnabled);
       }
     }

     @Override
     public boolean isAllowed() {
       return isAllowed;
     }

     @Override
     public void setAllowed(boolean isAllowed) {
       this.isAllowed = isAllowed;
       if (button != null) {
         button.setVisibility(isAllowed ? View.VISIBLE : View.INVISIBLE);
       }
     }

     @Override
     public void setChecked(boolean isChecked) {
       this.isChecked = isChecked;
       if (button != null) {
         button.setChecked(isChecked);
       }
     }

     @Override
     @InCallButtonIds
     public int getInCallButtonId() {
       return buttonId;
     }

     @Override
     @CallSuper
     public void setButton(CheckableLabeledButton button) {
       Controllers.resetButton(this.button);

       this.button = button;
       if (button != null) {
         button.setEnabled(isEnabled);
         button.setVisibility(isAllowed ? View.VISIBLE : View.INVISIBLE);
         button.setChecked(isChecked);
         button.setOnClickListener(null);
         button.setOnCheckedChangeListener(this);
         button.setContentDescription(
             button.getContext().getText(isChecked ? checkedDescription : uncheckedDescription));
         button.setShouldShowMoreIndicator(false);
       }
     }

     @Override
     public void onCheckedChanged(CheckableLabeledButton checkableLabeledButton, boolean isChecked) {
       button.setContentDescription(
           button.getContext().getText(isChecked ? checkedDescription : uncheckedDescription));
       doCheckedChanged(isChecked);
     }

     protected abstract void doCheckedChanged(boolean isChecked);
   }

   abstract class SimpleCheckableButtonController extends CheckableButtonController {

     @StringRes private final int label;
     @DrawableRes private final int icon;

     protected SimpleCheckableButtonController(
         @NonNull InCallButtonUiDelegate delegate,
         @InCallButtonIds int buttonId,
         @StringRes int checkedContentDescription,
         @StringRes int uncheckedContentDescription,
         @StringRes int label,
         @DrawableRes int icon) {
       super(
           delegate,
           buttonId,
           checkedContentDescription == 0 ? label : checkedContentDescription,
           uncheckedContentDescription == 0 ? label : uncheckedContentDescription);
       this.label = label;
       this.icon = icon;
     }

     @Override
     @CallSuper
     public void setButton(CheckableLabeledButton button) {
       super.setButton(button);
       if (button != null) {
         button.setLabelText(label);
         button.setIconDrawable(icon);
       }
     }
   }

   abstract class NonCheckableButtonController implements ButtonController, OnClickListener {

     protected final InCallButtonUiDelegate delegate;
     @InCallButtonIds protected final int buttonId;
     @StringRes protected final int contentDescription;
     protected boolean isEnabled;
     protected boolean isAllowed;
     protected CheckableLabeledButton button;

     protected NonCheckableButtonController(
         InCallButtonUiDelegate delegate,
         @InCallButtonIds int buttonId,
         @StringRes int contentDescription) {
       this.delegate = delegate;
       this.buttonId = buttonId;
       this.contentDescription = contentDescription;
     }

     @Override
     public boolean isEnabled() {
       return isEnabled;
     }

     @Override
     public void setEnabled(boolean isEnabled) {
       this.isEnabled = isEnabled;
       if (button != null) {
         button.setEnabled(isEnabled);
       }
     }

     @Override
     public boolean isAllowed() {
       return isAllowed;
     }

     @Override
     public void setAllowed(boolean isAllowed) {
       this.isAllowed = isAllowed;
       if (button != null) {
         button.setVisibility(isAllowed ? View.VISIBLE : View.INVISIBLE);
       }
     }

     @Override
     public void setChecked(boolean isChecked) {
       Assert.fail();
     }

     @Override
     @InCallButtonIds
     public int getInCallButtonId() {
       return buttonId;
     }

     @Override
     @CallSuper
     public void setButton(CheckableLabeledButton button) {
       Controllers.resetButton(this.button);

       this.button = button;
       if (button != null) {
         button.setEnabled(isEnabled);
         button.setVisibility(isAllowed ? View.VISIBLE : View.INVISIBLE);
         button.setChecked(false);
         button.setOnCheckedChangeListener(null);
         button.setOnClickListener(this);
         button.setContentDescription(button.getContext().getText(contentDescription));
         button.setShouldShowMoreIndicator(false);
       }
     }
   }

   abstract class SimpleNonCheckableButtonController extends NonCheckableButtonController {

     @StringRes private final int label;
     @DrawableRes private final int icon;

     protected SimpleNonCheckableButtonController(
         InCallButtonUiDelegate delegate,
         @InCallButtonIds int buttonId,
         @StringRes int contentDescription,
         @StringRes int label,
         @DrawableRes int icon) {
       super(delegate, buttonId, contentDescription == 0 ? label : contentDescription);
       this.label = label;
       this.icon = icon;
     }

     @Override
     @CallSuper
     public void setButton(CheckableLabeledButton button) {
       super.setButton(button);
       if (button != null) {
         button.setLabelText(label);
         button.setIconDrawable(icon);
       }
     }
   }

   class MuteButtonController extends SimpleCheckableButtonController {

     public MuteButtonController(InCallButtonUiDelegate delegate) {
       super(
           delegate,
           InCallButtonIds.BUTTON_MUTE,
           R.string.incall_content_description_muted,
           R.string.incall_content_description_unmuted,
           R.string.incall_label_mute,
           R.drawable.quantum_ic_mic_off_white_36);
     }

     @Override
     public void doCheckedChanged(boolean isChecked) {
       delegate.muteClicked(isChecked, true /* clickedByUser */);
     }
   }

   class SpeakerButtonController
       implements ButtonController, OnCheckedChangeListener, OnClickListener {

     @NonNull private final InCallButtonUiDelegate delegate;
     private boolean isEnabled;
     private boolean isAllowed;
     private boolean isChecked;
     private CheckableLabeledButton button;

     @StringRes private int label = R.string.incall_label_speaker;
     @DrawableRes private int icon = R.drawable.quantum_ic_volume_up_white_36;
     private boolean checkable;
     private CharSequence contentDescription;
     private CharSequence checkedContentDescription;
     private CharSequence uncheckedContentDescription;

     public SpeakerButtonController(@NonNull InCallButtonUiDelegate delegate) {
       this.delegate = delegate;
     }

     @Override
     public boolean isEnabled() {
       return isEnabled;
     }

     @Override
     public void setEnabled(boolean isEnabled) {
       this.isEnabled = isEnabled;
       if (button != null) {
         button.setEnabled(isEnabled && isAllowed);
       }
     }

     @Override
     public boolean isAllowed() {
       return isAllowed;
     }

     @Override
     public void setAllowed(boolean isAllowed) {
       this.isAllowed = isAllowed;
       if (button != null) {
         button.setEnabled(isEnabled && isAllowed);
       }
     }

     @Override
     public void setChecked(boolean isChecked) {
       this.isChecked = isChecked;
       if (button != null) {
         button.setChecked(isChecked);
       }
     }

     @Override
     public int getInCallButtonId() {
       return InCallButtonIds.BUTTON_AUDIO;
     }

     @Override
     public void setButton(CheckableLabeledButton button) {
       this.button = button;
       if (button != null) {
         button.setEnabled(isEnabled && isAllowed);
         button.setVisibility(View.VISIBLE);
         button.setChecked(isChecked);
         button.setOnClickListener(checkable ? null : this);
         button.setOnCheckedChangeListener(checkable ? this : null);
         button.setLabelText(label);
         button.setIconDrawable(icon);
         button.setContentDescription(
             isChecked ? checkedContentDescription : uncheckedContentDescription);
         button.setShouldShowMoreIndicator(!checkable);
       }
     }

     public void setAudioState(CallAudioState audioState) {
       @StringRes int contentDescriptionResId;
       if ((audioState.getSupportedRouteMask() & CallAudioState.ROUTE_BLUETOOTH)
           == CallAudioState.ROUTE_BLUETOOTH) {
         checkable = false;
         isChecked = false;
         label = R.string.incall_label_audio;

         if ((audioState.getRoute() & CallAudioState.ROUTE_BLUETOOTH)
             == CallAudioState.ROUTE_BLUETOOTH) {
           icon = R.drawable.quantum_ic_bluetooth_audio_white_36;
           contentDescriptionResId = R.string.incall_content_description_bluetooth;
         } else if ((audioState.getRoute() & CallAudioState.ROUTE_SPEAKER)
             == CallAudioState.ROUTE_SPEAKER) {
           icon = R.drawable.quantum_ic_volume_up_white_36;
           contentDescriptionResId = R.string.incall_content_description_speaker;
         } else if ((audioState.getRoute() & CallAudioState.ROUTE_WIRED_HEADSET)
             == CallAudioState.ROUTE_WIRED_HEADSET) {
           icon = R.drawable.quantum_ic_headset_white_36;
           contentDescriptionResId = R.string.incall_content_description_headset;
         } else {
           icon = R.drawable.ic_phone_audio_white_36dp;
           contentDescriptionResId = R.string.incall_content_description_earpiece;
         }
       } else {
         checkable = true;
         isChecked = audioState.getRoute() == CallAudioState.ROUTE_SPEAKER;
         label = R.string.incall_label_speaker;
         icon = R.drawable.quantum_ic_volume_up_white_36;
         contentDescriptionResId = R.string.incall_content_description_speaker;
       }

       contentDescription = delegate.getContext().getText(contentDescriptionResId);
       checkedContentDescription =
           TextUtils.concat(
               contentDescription,
               delegate.getContext().getText(R.string.incall_talkback_speaker_on));
       uncheckedContentDescription =
           TextUtils.concat(
               contentDescription,
               delegate.getContext().getText(R.string.incall_talkback_speaker_off));
       setButton(button);
     }

     @Override
     public void onClick(View v) {
       delegate.showAudioRouteSelector();
     }

     @Override
     public void onCheckedChanged(CheckableLabeledButton checkableLabeledButton, boolean isChecked) {
       checkableLabeledButton.setContentDescription(
           isChecked ? checkedContentDescription : uncheckedContentDescription);
       delegate.toggleSpeakerphone();
     }
   }

   class DialpadButtonController extends SimpleCheckableButtonController {

     public DialpadButtonController(@NonNull InCallButtonUiDelegate delegate) {
       super(
           delegate,
           InCallButtonIds.BUTTON_DIALPAD,
           0,
           0,
           R.string.incall_label_dialpad,
           R.drawable.quantum_ic_dialpad_white_36);
     }

     @Override
     public void doCheckedChanged(boolean isChecked) {
       delegate.showDialpadClicked(isChecked);
     }
   }

   class HoldButtonController extends SimpleCheckableButtonController {

     public HoldButtonController(@NonNull InCallButtonUiDelegate delegate) {
       super(
           delegate,
           InCallButtonIds.BUTTON_HOLD,
           R.string.incall_content_description_unhold,
           R.string.incall_content_description_hold,
           R.string.incall_label_hold,
           R.drawable.quantum_ic_pause_white_36);
     }

     @Override
     public void doCheckedChanged(boolean isChecked) {
       delegate.holdClicked(isChecked);
     }
   }

   class AddCallButtonController extends SimpleNonCheckableButtonController {

     public AddCallButtonController(@NonNull InCallButtonUiDelegate delegate) {
       super(
           delegate,
           InCallButtonIds.BUTTON_ADD_CALL,
           0,
           R.string.incall_label_add_call,
           R.drawable.ic_addcall_white);
       Assert.isNotNull(delegate);
     }

     @Override
     public void onClick(View view) {
       delegate.addCallClicked();
     }
   }

   class SwapButtonController extends SimpleNonCheckableButtonController {

     public SwapButtonController(@NonNull InCallButtonUiDelegate delegate) {
       super(
           delegate,
           InCallButtonIds.BUTTON_SWAP,
           R.string.incall_content_description_swap_calls,
           R.string.incall_label_swap,
           R.drawable.quantum_ic_swap_calls_white_36);
       Assert.isNotNull(delegate);
     }

     @Override
     public void onClick(View view) {
       delegate.swapClicked();
     }
   }

   class MergeButtonController extends SimpleNonCheckableButtonController {

     public MergeButtonController(@NonNull InCallButtonUiDelegate delegate) {
       super(
           delegate,
           InCallButtonIds.BUTTON_MERGE,
           R.string.incall_content_description_merge_calls,
           R.string.incall_label_merge,
           R.drawable.quantum_ic_call_merge_white_36);
       Assert.isNotNull(delegate);
     }

     @Override
     public void onClick(View view) {
       delegate.mergeClicked();
     }
   }

   class UpgradeToVideoButtonController extends SimpleNonCheckableButtonController {

     public UpgradeToVideoButtonController(@NonNull InCallButtonUiDelegate delegate) {
       super(
           delegate,
           InCallButtonIds.BUTTON_UPGRADE_TO_VIDEO,
           0,
           R.string.incall_label_videocall,
           R.drawable.quantum_ic_videocam_white_36);
       Assert.isNotNull(delegate);
     }

     @Override
     public void onClick(View view) {
       delegate.changeToVideoClicked();
     }
   }

   class ManageConferenceButtonController extends SimpleNonCheckableButtonController {

     private final InCallScreenDelegate inCallScreenDelegate;

     public ManageConferenceButtonController(@NonNull InCallScreenDelegate inCallScreenDelegate) {
       super(
           null,
           InCallButtonIds.BUTTON_MANAGE_VOICE_CONFERENCE,
           R.string.a11y_description_incall_label_manage_content,
           R.string.incall_label_manage,
           R.drawable.quantum_ic_group_white_36);
       Assert.isNotNull(inCallScreenDelegate);
       this.inCallScreenDelegate = inCallScreenDelegate;
     }

     @Override
     public void onClick(View view) {
       inCallScreenDelegate.onManageConferenceClicked();
     }
   }

   class SwitchToSecondaryButtonController extends SimpleNonCheckableButtonController {

     private final InCallScreenDelegate inCallScreenDelegate;

     public SwitchToSecondaryButtonController(InCallScreenDelegate inCallScreenDelegate) {
       super(
           null,
           InCallButtonIds.BUTTON_SWITCH_TO_SECONDARY,
           R.string.incall_content_description_swap_calls,
           R.string.incall_label_swap,
           R.drawable.quantum_ic_swap_calls_white_36);
       Assert.isNotNull(inCallScreenDelegate);
       this.inCallScreenDelegate = inCallScreenDelegate;
     }

     @Override
     public void onClick(View view) {
       inCallScreenDelegate.onSecondaryInfoClicked();
     }
   }
 }
	/*
	* Copyright (C) 2016 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.incallui.incall.impl;

	import android.support.annotation.CallSuper;
	import android.support.annotation.DrawableRes;
	import android.support.annotation.NonNull;
	import android.support.annotation.StringRes;
	import android.telecom.CallAudioState;
	import android.text.TextUtils;
	import android.view.View;
	import android.view.View.OnClickListener;
	import com.android.dialer.common.Assert;
	import com.android.incallui.incall.impl.CheckableLabeledButton.OnCheckedChangeListener;
	import com.android.incallui.incall.protocol.InCallButtonIds;
	import com.android.incallui.incall.protocol.InCallButtonUiDelegate;
	import com.android.incallui.incall.protocol.InCallScreenDelegate;

	/** Manages a single button. */
	interface ButtonController {

	boolean isEnabled();

	void setEnabled(boolean isEnabled);

	boolean isAllowed();

	void setAllowed(boolean isAllowed);

	void setChecked(boolean isChecked);

	@InCallButtonIds
	int getInCallButtonId();

	void setButton(CheckableLabeledButton button);

	final class Controllers {

	private static void resetButton(CheckableLabeledButton button) {
	if (button != null) {
	button.setOnCheckedChangeListener(null);
	button.setOnClickListener(null);
	}
	}
	}

	abstract class CheckableButtonController implements ButtonController, OnCheckedChangeListener {

	@NonNull protected final InCallButtonUiDelegate delegate;
	@InCallButtonIds protected final int buttonId;
	@StringRes protected final int checkedDescription;
	@StringRes protected final int uncheckedDescription;
	protected boolean isEnabled;
	protected boolean isAllowed;
	protected boolean isChecked;
	protected CheckableLabeledButton button;

	protected CheckableButtonController(
	@NonNull InCallButtonUiDelegate delegate,
	@InCallButtonIds int buttonId,
	@StringRes int checkedContentDescription,
	@StringRes int uncheckedContentDescription) {
	Assert.isNotNull(delegate);
	this.delegate = delegate;
	this.buttonId = buttonId;
	this.checkedDescription = checkedContentDescription;
	this.uncheckedDescription = uncheckedContentDescription;
	}

	@Override
	public boolean isEnabled() {
	return isEnabled;
	}

	@Override
	public void setEnabled(boolean isEnabled) {
	this.isEnabled = isEnabled;
	if (button != null) {
	button.setEnabled(isEnabled);
	}
	}

	@Override
	public boolean isAllowed() {
	return isAllowed;
	}

	@Override
	public void setAllowed(boolean isAllowed) {
	this.isAllowed = isAllowed;
	if (button != null) {
	button.setVisibility(isAllowed ? View.VISIBLE : View.INVISIBLE);
	}
	}

	@Override
	public void setChecked(boolean isChecked) {
	this.isChecked = isChecked;
	if (button != null) {
	button.setChecked(isChecked);
	}
	}

	@Override
	@InCallButtonIds
	public int getInCallButtonId() {
	return buttonId;
	}

	@Override
	@CallSuper
	public void setButton(CheckableLabeledButton button) {
	Controllers.resetButton(this.button);

	this.button = button;
	if (button != null) {
	button.setEnabled(isEnabled);
	button.setVisibility(isAllowed ? View.VISIBLE : View.INVISIBLE);
	button.setChecked(isChecked);
	button.setOnClickListener(null);
	button.setOnCheckedChangeListener(this);
	button.setContentDescription(
	button.getContext().getText(isChecked ? checkedDescription : uncheckedDescription));
	button.setShouldShowMoreIndicator(false);
	}
	}

	@Override
	public void onCheckedChanged(CheckableLabeledButton checkableLabeledButton, boolean isChecked) {
	button.setContentDescription(
	button.getContext().getText(isChecked ? checkedDescription : uncheckedDescription));
	doCheckedChanged(isChecked);
	}

	protected abstract void doCheckedChanged(boolean isChecked);
	}

	abstract class SimpleCheckableButtonController extends CheckableButtonController {

	@StringRes private final int label;
	@DrawableRes private final int icon;

	protected SimpleCheckableButtonController(
	@NonNull InCallButtonUiDelegate delegate,
	@InCallButtonIds int buttonId,
	@StringRes int checkedContentDescription,
	@StringRes int uncheckedContentDescription,
	@StringRes int label,
	@DrawableRes int icon) {
	super(
	delegate,
	buttonId,
	checkedContentDescription == 0 ? label : checkedContentDescription,
	uncheckedContentDescription == 0 ? label : uncheckedContentDescription);
	this.label = label;
	this.icon = icon;
	}

	@Override
	@CallSuper
	public void setButton(CheckableLabeledButton button) {
	super.setButton(button);
	if (button != null) {
	button.setLabelText(label);
	button.setIconDrawable(icon);
	}
	}
	}

	abstract class NonCheckableButtonController implements ButtonController, OnClickListener {

	protected final InCallButtonUiDelegate delegate;
	@InCallButtonIds protected final int buttonId;
	@StringRes protected final int contentDescription;
	protected boolean isEnabled;
	protected boolean isAllowed;
	protected CheckableLabeledButton button;

	protected NonCheckableButtonController(
	InCallButtonUiDelegate delegate,
	@InCallButtonIds int buttonId,
	@StringRes int contentDescription) {
	this.delegate = delegate;
	this.buttonId = buttonId;
	this.contentDescription = contentDescription;
	}

	@Override
	public boolean isEnabled() {
	return isEnabled;
	}

	@Override
	public void setEnabled(boolean isEnabled) {
	this.isEnabled = isEnabled;
	if (button != null) {
	button.setEnabled(isEnabled);
	}
	}

	@Override
	public boolean isAllowed() {
	return isAllowed;
	}

	@Override
	public void setAllowed(boolean isAllowed) {
	this.isAllowed = isAllowed;
	if (button != null) {
	button.setVisibility(isAllowed ? View.VISIBLE : View.INVISIBLE);
	}
	}

	@Override
	public void setChecked(boolean isChecked) {
	Assert.fail();
	}

	@Override
	@InCallButtonIds
	public int getInCallButtonId() {
	return buttonId;
	}

	@Override
	@CallSuper
	public void setButton(CheckableLabeledButton button) {
	Controllers.resetButton(this.button);

	this.button = button;
	if (button != null) {
	button.setEnabled(isEnabled);
	button.setVisibility(isAllowed ? View.VISIBLE : View.INVISIBLE);
	button.setChecked(false);
	button.setOnCheckedChangeListener(null);
	button.setOnClickListener(this);
	button.setContentDescription(button.getContext().getText(contentDescription));
	button.setShouldShowMoreIndicator(false);
	}
	}
	}

	abstract class SimpleNonCheckableButtonController extends NonCheckableButtonController {

	@StringRes private final int label;
	@DrawableRes private final int icon;

	protected SimpleNonCheckableButtonController(
	InCallButtonUiDelegate delegate,
	@InCallButtonIds int buttonId,
	@StringRes int contentDescription,
	@StringRes int label,
	@DrawableRes int icon) {
	super(delegate, buttonId, contentDescription == 0 ? label : contentDescription);
	this.label = label;
	this.icon = icon;
	}

	@Override
	@CallSuper
	public void setButton(CheckableLabeledButton button) {
	super.setButton(button);
	if (button != null) {
	button.setLabelText(label);
	button.setIconDrawable(icon);
	}
	}
	}

	class MuteButtonController extends SimpleCheckableButtonController {

	public MuteButtonController(InCallButtonUiDelegate delegate) {
	super(
	delegate,
	InCallButtonIds.BUTTON_MUTE,
	R.string.incall_content_description_muted,
	R.string.incall_content_description_unmuted,
	R.string.incall_label_mute,
	R.drawable.quantum_ic_mic_off_white_36);
	}

	@Override
	public void doCheckedChanged(boolean isChecked) {
	delegate.muteClicked(isChecked, true /* clickedByUser */);
	}
	}

	class SpeakerButtonController
	implements ButtonController, OnCheckedChangeListener, OnClickListener {

	@NonNull private final InCallButtonUiDelegate delegate;
	private boolean isEnabled;
	private boolean isAllowed;
	private boolean isChecked;
	private CheckableLabeledButton button;

	@StringRes private int label = R.string.incall_label_speaker;
	@DrawableRes private int icon = R.drawable.quantum_ic_volume_up_white_36;
	private boolean checkable;
	private CharSequence contentDescription;
	private CharSequence checkedContentDescription;
	private CharSequence uncheckedContentDescription;

	public SpeakerButtonController(@NonNull InCallButtonUiDelegate delegate) {
	this.delegate = delegate;
	}

	@Override
	public boolean isEnabled() {
	return isEnabled;
	}

	@Override
	public void setEnabled(boolean isEnabled) {
	this.isEnabled = isEnabled;
	if (button != null) {
	button.setEnabled(isEnabled && isAllowed);
	}
	}

	@Override
	public boolean isAllowed() {
	return isAllowed;
	}

	@Override
	public void setAllowed(boolean isAllowed) {
	this.isAllowed = isAllowed;
	if (button != null) {
	button.setEnabled(isEnabled && isAllowed);
	}
	}

	@Override
	public void setChecked(boolean isChecked) {
	this.isChecked = isChecked;
	if (button != null) {
	button.setChecked(isChecked);
	}
	}

	@Override
	public int getInCallButtonId() {
	return InCallButtonIds.BUTTON_AUDIO;
	}

	@Override
	public void setButton(CheckableLabeledButton button) {
	this.button = button;
	if (button != null) {
	button.setEnabled(isEnabled && isAllowed);
	button.setVisibility(View.VISIBLE);
	button.setChecked(isChecked);
	button.setOnClickListener(checkable ? null : this);
	button.setOnCheckedChangeListener(checkable ? this : null);
	button.setLabelText(label);
	button.setIconDrawable(icon);
	button.setContentDescription(
	isChecked ? checkedContentDescription : uncheckedContentDescription);
	button.setShouldShowMoreIndicator(!checkable);
	}
	}

	public void setAudioState(CallAudioState audioState) {
	@StringRes int contentDescriptionResId;
	if ((audioState.getSupportedRouteMask() & CallAudioState.ROUTE_BLUETOOTH)
	== CallAudioState.ROUTE_BLUETOOTH) {
	checkable = false;
	isChecked = false;
	label = R.string.incall_label_audio;

	if ((audioState.getRoute() & CallAudioState.ROUTE_BLUETOOTH)
	== CallAudioState.ROUTE_BLUETOOTH) {
	icon = R.drawable.quantum_ic_bluetooth_audio_white_36;
	contentDescriptionResId = R.string.incall_content_description_bluetooth;
	} else if ((audioState.getRoute() & CallAudioState.ROUTE_SPEAKER)
	== CallAudioState.ROUTE_SPEAKER) {
	icon = R.drawable.quantum_ic_volume_up_white_36;
	contentDescriptionResId = R.string.incall_content_description_speaker;
	} else if ((audioState.getRoute() & CallAudioState.ROUTE_WIRED_HEADSET)
	== CallAudioState.ROUTE_WIRED_HEADSET) {
	icon = R.drawable.quantum_ic_headset_white_36;
	contentDescriptionResId = R.string.incall_content_description_headset;
	} else {
	icon = R.drawable.ic_phone_audio_white_36dp;
	contentDescriptionResId = R.string.incall_content_description_earpiece;
	}
	} else {
	checkable = true;
	isChecked = audioState.getRoute() == CallAudioState.ROUTE_SPEAKER;
	label = R.string.incall_label_speaker;
	icon = R.drawable.quantum_ic_volume_up_white_36;
	contentDescriptionResId = R.string.incall_content_description_speaker;
	}

	contentDescription = delegate.getContext().getText(contentDescriptionResId);
	checkedContentDescription =
	TextUtils.concat(
	contentDescription,
	delegate.getContext().getText(R.string.incall_talkback_speaker_on));
	uncheckedContentDescription =
	TextUtils.concat(
	contentDescription,
	delegate.getContext().getText(R.string.incall_talkback_speaker_off));
	setButton(button);
	}

	@Override
	public void onClick(View v) {
	delegate.showAudioRouteSelector();
	}

	@Override
	public void onCheckedChanged(CheckableLabeledButton checkableLabeledButton, boolean isChecked) {
	checkableLabeledButton.setContentDescription(
	isChecked ? checkedContentDescription : uncheckedContentDescription);
	delegate.toggleSpeakerphone();
	}
	}

	class DialpadButtonController extends SimpleCheckableButtonController {

	public DialpadButtonController(@NonNull InCallButtonUiDelegate delegate) {
	super(
	delegate,
	InCallButtonIds.BUTTON_DIALPAD,
	0,
	0,
	R.string.incall_label_dialpad,
	R.drawable.quantum_ic_dialpad_white_36);
	}

	@Override
	public void doCheckedChanged(boolean isChecked) {
	delegate.showDialpadClicked(isChecked);
	}
	}

	class HoldButtonController extends SimpleCheckableButtonController {

	public HoldButtonController(@NonNull InCallButtonUiDelegate delegate) {
	super(
	delegate,
	InCallButtonIds.BUTTON_HOLD,
	R.string.incall_content_description_unhold,
	R.string.incall_content_description_hold,
	R.string.incall_label_hold,
	R.drawable.quantum_ic_pause_white_36);
	}

	@Override
	public void doCheckedChanged(boolean isChecked) {
	delegate.holdClicked(isChecked);
	}
	}

	class AddCallButtonController extends SimpleNonCheckableButtonController {

	public AddCallButtonController(@NonNull InCallButtonUiDelegate delegate) {
	super(
	delegate,
	InCallButtonIds.BUTTON_ADD_CALL,
	0,
	R.string.incall_label_add_call,
	R.drawable.ic_addcall_white);
	Assert.isNotNull(delegate);
	}

	@Override
	public void onClick(View view) {
	delegate.addCallClicked();
	}
	}

	class SwapButtonController extends SimpleNonCheckableButtonController {

	public SwapButtonController(@NonNull InCallButtonUiDelegate delegate) {
	super(
	delegate,
	InCallButtonIds.BUTTON_SWAP,
	R.string.incall_content_description_swap_calls,
	R.string.incall_label_swap,
	R.drawable.quantum_ic_swap_calls_white_36);
	Assert.isNotNull(delegate);
	}

	@Override
	public void onClick(View view) {
	delegate.swapClicked();
	}
	}

	class MergeButtonController extends SimpleNonCheckableButtonController {

	public MergeButtonController(@NonNull InCallButtonUiDelegate delegate) {
	super(
	delegate,
	InCallButtonIds.BUTTON_MERGE,
	R.string.incall_content_description_merge_calls,
	R.string.incall_label_merge,
	R.drawable.quantum_ic_call_merge_white_36);
	Assert.isNotNull(delegate);
	}

	@Override
	public void onClick(View view) {
	delegate.mergeClicked();
	}
	}

	class UpgradeToVideoButtonController extends SimpleNonCheckableButtonController {

	public UpgradeToVideoButtonController(@NonNull InCallButtonUiDelegate delegate) {
	super(
	delegate,
	InCallButtonIds.BUTTON_UPGRADE_TO_VIDEO,
	0,
	R.string.incall_label_videocall,
	R.drawable.quantum_ic_videocam_white_36);
	Assert.isNotNull(delegate);
	}

	@Override
	public void onClick(View view) {
	delegate.changeToVideoClicked();
	}
	}

	class ManageConferenceButtonController extends SimpleNonCheckableButtonController {

	private final InCallScreenDelegate inCallScreenDelegate;

	public ManageConferenceButtonController(@NonNull InCallScreenDelegate inCallScreenDelegate) {
	super(
	null,
	InCallButtonIds.BUTTON_MANAGE_VOICE_CONFERENCE,
	R.string.a11y_description_incall_label_manage_content,
	R.string.incall_label_manage,
	R.drawable.quantum_ic_group_white_36);
	Assert.isNotNull(inCallScreenDelegate);
	this.inCallScreenDelegate = inCallScreenDelegate;
	}

	@Override
	public void onClick(View view) {
	inCallScreenDelegate.onManageConferenceClicked();
	}
	}

	class SwitchToSecondaryButtonController extends SimpleNonCheckableButtonController {

	private final InCallScreenDelegate inCallScreenDelegate;

	public SwitchToSecondaryButtonController(InCallScreenDelegate inCallScreenDelegate) {
	super(
	null,
	InCallButtonIds.BUTTON_SWITCH_TO_SECONDARY,
	R.string.incall_content_description_swap_calls,
	R.string.incall_label_swap,
	R.drawable.quantum_ic_swap_calls_white_36);
	Assert.isNotNull(inCallScreenDelegate);
	this.inCallScreenDelegate = inCallScreenDelegate;
	}

	@Override
	public void onClick(View view) {
	inCallScreenDelegate.onSecondaryInfoClicked();
	}
	}
	}