Android Open Source - sdl_tester_android Json Flipper Dialog

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License

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Copyright (c) 2014, Ford Motor Company All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are m...

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Java Source Code

package com.livio.sdl.dialogs;
/*  ww w. j a v a  2s .  c o m*/
import java.util.List;

import android.content.Context;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageButton;
import android.widget.TextView;

import com.livio.sdl.R;
import com.livio.sdl.SdlLogMessage;
import com.livio.sdl.utils.SdlUtils;

/**
 * This dialog shows a single JSON message, but allows the ability to flip back and forth between
 * all available messages via the arrow buttons at the bottom of the dialog.  This dialog will not
 * be updated when new messages are sent with this dialog open.  The dialog must be closed and re-opened
 * in order to refresh with new values.
 *
 * @author Mike Burke
 *
 */
public class JsonFlipperDialog extends BaseAlertDialog {
  
  private List<SdlLogMessage> jsonMessages;
  private int currentPosition;
  
  private TextView text;
  private ImageButton leftButton, rightButton;
  
  public JsonFlipperDialog(Context context, List<SdlLogMessage> jsonMessages, int startPosition) {
    super(context, SdlUtils.makeJsonTitle(jsonMessages.get(startPosition).getCorrelationId()), R.layout.json_flipper_dialog);
    this.jsonMessages = jsonMessages;
    this.currentPosition = startPosition;
    createDialog();
    
    // since refresh updates the dialog's title, this must be after createDialog() so the dialog isn't null
    refresh();
  }

  @Override
  protected void findViews(View parent) {
    text = (TextView) parent.findViewById(R.id.textview);
    
    // set up left button
    leftButton = (ImageButton) parent.findViewById(R.id.ib_moveLeft);
    leftButton.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        // if we can move left, do it.  if not, do nothing
        if(currentPosition > 0){
          currentPosition--;
          refresh();
        }
      }
    });
    
    // set up right button
    rightButton = (ImageButton) parent.findViewById(R.id.ib_moveRight);
    rightButton.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        // if we can move right, do it.  if not, do nothing
        if(currentPosition < (jsonMessages.size()-1) ){
          currentPosition++;
          refresh();
        }
      }
    });
  }
  
  // refresh the buttons & the text for this dialog
  private void refresh(){
    refreshButtons();
    refreshText();
  }
  
  // refreshes the buttons with new position.  disables the buttons when we're at the edges of the list.
  private void refreshButtons(){
    boolean atStart = (currentPosition == 0);
    boolean atEnd = (currentPosition == jsonMessages.size()-1);
    
    leftButton.setEnabled(!atStart);
    rightButton.setEnabled(!atEnd);
  }
  
  // refreshes the text of the dialog - both the title and the main text.
  private void refreshText(){
    SdlLogMessage currentMessage = jsonMessages.get(currentPosition);
    dialog.setTitle(SdlUtils.makeJsonTitle(currentMessage.getCorrelationId()));
    text.setText(currentMessage.getJsonData());
  }

}

Java Source Code List