content: /*
   * Copyright (C) 2015 AChep@xda <artemchep@gmail.com>
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License
   * as published by the Free Software Foundation; either version 2
   * of the License, or (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
   * MA  02110-1301, USA.
   */
  package com.achep.base.ui;
  
  import android.support.annotation.NonNull;
  import android.support.annotation.Nullable;
  import android.widget.CompoundButton;
  
  import com.achep.acdisplay.DialogHelper;
  import com.achep.headsup.R;
  import com.achep.base.interfaces.ICheckable;
  import com.achep.base.permissions.Permission;
  import com.achep.base.ui.activities.ActivityBase;
  import com.achep.base.ui.widgets.SwitchBar;
  import com.achep.base.utils.ViewUtils;
  
  /**
   * @author Artem Chepurnoy
   */
  public class SwitchBarPermissible implements Permission.OnPermissionStateChanged, ICheckable {
  
      @NonNull
      private final ActivityBase mActivity;
      @NonNull
      private final SwitchBar mSwitchBar;
      @Nullable
      private final Permission[] mPermissions;
  
      @Nullable
      private CompoundButton.OnCheckedChangeListener mListener;
  
      public SwitchBarPermissible(@NonNull ActivityBase activity, @NonNull SwitchBar switchBar,
                                  @Nullable Permission[] permissions) {
          mActivity = activity;
          mPermissions = permissions;
          mSwitchBar = switchBar;
          if (mPermissions != null) mSwitchBar.setIconResource(R.drawable.ic_action_warning_amber);
          mSwitchBar.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
  
              @Override
              public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                  if (isChecked && !hasAccess()) {
                      assert mPermissions != null;
                      buttonView.setChecked(false);
                      DialogHelper.showPermissionsDialog(mActivity, mPermissions);
                  } else {
                      if (mListener != null) mListener.onCheckedChanged(buttonView, isChecked);
                  }
              }
  
          });
      }
  
      /**
       * Called on activity resumed.
       */
      public void resume() {
          if (mPermissions == null) {
              return;
          }
  
          boolean enabled = true;
          for (Permission permission : mPermissions) {
              permission.registerListener(this);
              if (enabled) enabled = permission.isActive();
          }
  
          ViewUtils.setVisible(mSwitchBar.getIconView(), !enabled);
          setChecked(mSwitchBar.isChecked() && enabled);
      }
  
      /**
       * Called on activity paused.
       */
      public void pause() {
          if (mPermissions == null) {
              return;
          }
  
          for (Permission permission : mPermissions) {
              permission.unregisterListener(this);
          }
      }
  
      private boolean hasAccess() {
          if (mPermissions == null) return true;
          for (Permission permission : mPermissions)
              if (!permission.isActive()) return false;
          return true;
      }
  
      //-- I-CHECKABLE ----------------------------------------------------------
  
      /**
       * {@inheritDoc}
       */
      @Override
      public void setOnCheckedChangeListener(
              @Nullable CompoundButton.OnCheckedChangeListener listener) {
          mListener = listener;
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public void setChecked(boolean checked) {
          mSwitchBar.setChecked(checked);
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public boolean isChecked() {
          return mSwitchBar.isChecked();
      }
  
      /**
       * {@inheritDoc}
       */
      @Override
      public void toggle() {
          mSwitchBar.toggle();
      }
  
  }
  