content: /*
  The contents of this file are subject to the Mozilla Public License
  Version 1.1 (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.mozilla.org/MPL/
  
  Software distributed under the License is distributed on an "AS IS"
  basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
  License for the specific language governing rights and limitations
  under the License.
  
  The Original Code is collection of files collectively known as Open Camera.
  
  The Initial Developer of the Original Code is Almalence Inc.
  Portions created by Initial Developer are Copyright (C) 2013 
  by Almalence Inc. All Rights Reserved.
   */
  
  /* <!-- +++
   package com.almalence.opencam_plus.ui;
   +++ --> */
  // <!-- -+-
  package com.almalence.opencam.ui;
  
  //-+- -->
  
  import java.util.HashMap;
  import java.util.Map;
  
  import android.app.AlertDialog;
  import android.content.Context;
  import android.os.Bundle;
  import android.preference.DialogPreference;
  import android.util.AttributeSet;
  import android.view.Gravity;
  import android.view.View;
  import android.view.View.OnClickListener;
  import android.widget.Button;
  import android.widget.LinearLayout;
  import android.widget.SeekBar;
  import android.widget.TextView;
  
  
  public class SeekBarPreference extends DialogPreference implements SeekBar.OnSeekBarChangeListener, OnClickListener
  {
      // ------------------------------------------------------------------------------------------
      // Private attributes :
      private static final String androidns="http://schemas.android.com/apk/res/android";
  
      private SeekBar mSeekBar;
      private TextView mSplashText,mValueText;
      private Context mContext;
  
      private String mDialogMessage, mSuffix;
      private int mDefault, mMax, mValue = 0;
      // ------------------------------------------------------------------------------------------
  
      private static final Map<Integer, Float> gamma_map = new HashMap<Integer, Float>()
  	{
  		{
  			put(0, 0.5f);
  			put(1, 0.55f);
  			put(2, 0.6f);
  			put(3, 0.65f);
  			put(4, 0.7f);
  		}
  	};
  
      // ------------------------------------------------------------------------------------------
      // Constructor :
      public SeekBarPreference(Context context, AttributeSet attrs) {
  
          super(context,attrs); 
          mContext = context;
  
          // Get string value for dialogMessage :
          int mDialogMessageId = attrs.getAttributeResourceValue(androidns, "dialogMessage", 0);
          if(mDialogMessageId == 0) mDialogMessage = attrs.getAttributeValue(androidns, "dialogMessage");
          else mDialogMessage = mContext.getString(mDialogMessageId);
  
          // Get string value for suffix (text attribute in xml file) :
          int mSuffixId = attrs.getAttributeResourceValue(androidns, "text", 0);
          if(mSuffixId == 0) mSuffix = attrs.getAttributeValue(androidns, "text");
          else mSuffix = mContext.getString(mSuffixId);
  
          // Get default and max seekbar values :
          mDefault = attrs.getAttributeIntValue(androidns, "defaultValue", 0);
          mMax = attrs.getAttributeIntValue(androidns, "max", 4);
      }
      // ------------------------------------------------------------------------------------------
  
  
  
      // ------------------------------------------------------------------------------------------
      // DialogPreference methods :
      @Override 
      protected View onCreateDialogView() {
  
          LinearLayout.LayoutParams params;
          LinearLayout layout = new LinearLayout(mContext);
          layout.setOrientation(LinearLayout.VERTICAL);
          layout.setPadding(6,6,6,6);
  
          mSplashText = new TextView(mContext);
          mSplashText.setPadding(30, 10, 30, 10);
          if (mDialogMessage != null)
              mSplashText.setText(mDialogMessage);
          layout.addView(mSplashText);
  
          mValueText = new TextView(mContext);
          mValueText.setGravity(Gravity.CENTER_HORIZONTAL);
          mValueText.setTextSize(32);
          params = new LinearLayout.LayoutParams(
                  LinearLayout.LayoutParams.FILL_PARENT, 
                  LinearLayout.LayoutParams.WRAP_CONTENT);
          layout.addView(mValueText, params);
  
          mSeekBar = new SeekBar(mContext);
          mSeekBar.setOnSeekBarChangeListener(this);
          layout.addView(mSeekBar, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
  
          if (shouldPersist())
              mValue = getPersistedInt(mDefault);
  
          mSeekBar.setMax(mMax);
          mSeekBar.setProgress(mValue);
  
          return layout;
      }
  
      @Override 
      protected void onBindDialogView(View v) {
          super.onBindDialogView(v);
          mSeekBar.setMax(mMax);
          mSeekBar.setProgress(mValue);
      }
  
      @Override
      protected void onSetInitialValue(boolean restore, Object defaultValue)  
      {
          super.onSetInitialValue(restore, defaultValue);
          if (restore) 
              mValue = shouldPersist() ? getPersistedInt(mDefault) : 0;
              else 
                  mValue = (Integer)defaultValue;
      }
      // ------------------------------------------------------------------------------------------
  
  
  
      // ------------------------------------------------------------------------------------------
      // OnSeekBarChangeListener methods :
      @Override
      public void onProgressChanged(SeekBar seek, int value, boolean fromTouch)
      {
          String t = String.valueOf(value);
          float gamma = gamma_map.get(Integer.valueOf(t));
          mValueText.setText("" + gamma + " ev");
      }
  
      @Override
      public void onStartTrackingTouch(SeekBar seek) {}
      @Override
      public void onStopTrackingTouch(SeekBar seek) {}
  
      public void setMax(int max) { mMax = max; }
      public int getMax() { return mMax; }
  
      public void setProgress(int progress) { 
          mValue = progress;
          if (mSeekBar != null)
              mSeekBar.setProgress(progress); 
      }
      public int getProgress() { return mValue; }
      // ------------------------------------------------------------------------------------------
  
  
  
      // ------------------------------------------------------------------------------------------
      // Set the positive button listener and onClick action : 
      @Override
      public void showDialog(Bundle state) {
  
          super.showDialog(state);
  
          Button positiveButton = ((AlertDialog) getDialog()).getButton(AlertDialog.BUTTON_POSITIVE);
          positiveButton.setOnClickListener(this);
      }
  
      @Override
      public void onClick(View v) {
  
          if (shouldPersist()) {
  
              mValue = mSeekBar.getProgress();
              persistInt(mSeekBar.getProgress());
              callChangeListener(Integer.valueOf(mSeekBar.getProgress()));
          }
  
          ((AlertDialog) getDialog()).dismiss();
      }
      // ------------------------------------------------------------------------------------------
  }