Android Open Source - Web-wrapper Settings Helper

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License

The source code is released under:

Apache License

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Java Source Code

package com.periplanisi.android.webwrapper.settings;
// ww w. ja  v a 2s .  c o m
import android.content.Context;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;

import com.periplanisi.android.webwrapper.R;

/**
 * Settings helper singleton
 * 
 * @author Ioannis Panagiotopoulos <ipanag+android@gmail.com>
 * 
 */
public class SettingsHelper {
  
  private static SettingsHelper sInstance;
  
  private final Context context;
  private SharedPreferences prefs;
  
  /**
   * Get singleton instance
   * 
   * @param context
   * @return
   */
  public static SettingsHelper getInstance(Context context) {
    if(sInstance == null) {
      sInstance = new SettingsHelper(context);
    }
    
    return sInstance;
  }
  
  private SettingsHelper(Context context) {
    this.context = context.getApplicationContext();
    prefs = PreferenceManager.getDefaultSharedPreferences(this.context);
  }
  
  public boolean isJavascriptEnabled() {
    return getBoolValue(R.string.prefs_key_js_enabled);
  }

  public boolean isShowActionBar() {
    return getBoolValue(R.string.prefs_key_action_bar);
  }

  public boolean isOpenSameHostLinks() {
    return getBoolValue(R.string.prefs_key_open_same_host);
  }

  public boolean isOpenOtherHostLinks() {
    return getBoolValue(R.string.prefs_key_open_other_host);
  }

  public boolean isIgnoreSslError() {
    return getBoolValue(R.string.prefs_key_ignore_ssl_error);
  }

  public boolean isBuiltInZoomControls() {
    return getBoolValue(R.string.prefs_key_built_in_zoom);
  }

  public boolean isDisplayZoomControls() {
    return getBoolValue(R.string.prefs_key_display_zoom);
  }

  /**
   * Get boolean value from settings
   * 
   * @param keyResId
   *            the android resource id which holds the preference key name
   * @return
   */
  private boolean getBoolValue(int keyResId) {
    String key = context.getString(keyResId);
    
    return getBoolValue(key);
  }
  
  /**
   * Get boolean value from settings
   * 
   * @param key
   *            preference key name
   * @return
   */
  public boolean getBoolValue(String key) {
    return prefs.getBoolean(key, getDefaultValue(key));
  }
  
  /**
   * Get the default value for preference
   * 
   * @param key
   *            preference key name
   * @return
   */
  private boolean getDefaultValue(final String key) {
    if(context.getString(R.string.prefs_key_js_enabled).equals(key)) {
      return false;
      
    } else if(context.getString(R.string.prefs_key_action_bar).equals(key)) {
      return true;
      
    } else if(context.getString(R.string.prefs_key_open_same_host).equals(key)) {
      return true;

    } else if(context.getString(R.string.prefs_key_open_other_host).equals(key)) {
      return false;

    } else if(context.getString(R.string.prefs_key_ignore_ssl_error).equals(key)) {
      return false;

    } else if(context.getString(R.string.prefs_key_built_in_zoom).equals(key)) {
      return true;

    } else if(context.getString(R.string.prefs_key_display_zoom).equals(key)) {
      return false;

    } else {
      return false;
    }
  }

}

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