Android Open Source - utexas-utilities Phone Delegate

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License

The source code is released under:
Apache License
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Java Source Code

package com.mapsaurus.paneslayout;
//from  w ww. j  a va2 s.co  m
import android.graphics.Color;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentManager.OnBackStackChangedListener;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.widget.SlidingPaneLayout;
import android.support.v4.widget.SlidingPaneLayout.PanelSlideListener;
import android.view.View;

import com.actionbarsherlock.view.MenuItem;

import java.lang.ref.WeakReference;

public class PhoneDelegate extends ActivityDelegate implements OnBackStackChangedListener {

  private SlidingPaneLayout spl;
  
  public PhoneDelegate(PanesActivity a) {
    super(a);
  }

  @Override
  public void onCreate(Bundle savedInstanceState) {
    if (findViewById(R.id.content_frame) == null)
      setContentView(R.layout.phone_layout);
    
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    getSupportActionBar().setHomeButtonEnabled(true);
    
    int menuOffset = getResources().getDimensionPixelSize(R.dimen.menu_offset);
    
    spl = (SlidingPaneLayout) findViewById(R.id.slidingpane_layout);
    spl.setShadowResource(R.drawable.shadow_left);
    spl.setParallaxDistance(menuOffset);
    spl.setCoveredFadeColor(Color.parseColor("#88000000"));
    spl.setSliderFadeColor(Color.parseColor("#00000000"));
    spl.setPanelSlideListener(new PanelSlideListener() {
      
      @Override
      public void onPanelSlide(View panel, float offset) {
        
      }
      
      @Override
      public void onPanelOpened(View panel) {
        
      }
      
      @Override
      public void onPanelClosed(View panel) {
        
      }
    });
    
    FragmentManager fm = getSupportFragmentManager();
    fm.addOnBackStackChangedListener(this);
  }

  /* *********************************************************************
   * Interactions with menu/back/etc
   * ********************************************************************* */

  @Override
  public boolean onBackPressed() {
    FragmentManager fm = getSupportFragmentManager();

    if (!spl.isOpen()) {
      if (fm.getBackStackEntryCount() > 0) {
        return false;
      } else {
        spl.openPane();
        return true;
      }
    } else {
      getActivity().finish();
      return true;
    }
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    if (item.getItemId() == android.R.id.home) {
      if (!spl.isOpen())
        spl.openPane();
      else
        onBackPressed();
      return true;
    }
    return false;
  }
  
  @Override
  public void onBackStackChanged() {

  }

  /* *********************************************************************
   * Adding, removing, getting fragments
   * ********************************************************************* */

  /**
   * Save the menu fragment. The reason to do this is because sometimes when
   * we need to retrieve a fragment, that fragment has not yet been added.
   */
  private WeakReference<Fragment> wMenuFragment = new WeakReference<Fragment>(null);

  @Override
  public void addFragment(Fragment prevFragment, Fragment newFragment) {
    boolean addToBackStack = false;
    if (prevFragment == getMenuFragment() || prevFragment == null) {
      clearFragments();
    } else {
      addToBackStack = true;
    }

    if (spl.isOpen()) spl.closePane();

    if (newFragment != null) {
      FragmentManager fm = getSupportFragmentManager();
      FragmentTransaction ft = fm.beginTransaction();
      ft.setCustomAnimations(android.R.anim.fade_in, android.R.anim.fade_out,
          android.R.anim.fade_in, android.R.anim.fade_out);
      ft.replace(R.id.content_frame, newFragment);
      if (addToBackStack) ft.addToBackStack(newFragment.toString());
      ft.commit();
    }
  }

  @Override
  public void clearFragments() {
    FragmentManager fm = getSupportFragmentManager();
    for(int i = 0; i < fm.getBackStackEntryCount(); i ++)    
      fm.popBackStack();
  }

  @Override
  public void setMenuFragment(Fragment f) {
    FragmentManager fm = getSupportFragmentManager();
    FragmentTransaction ft = fm.beginTransaction();
    ft.replace(R.id.menu_frame, f);
    ft.commit();

    wMenuFragment = new WeakReference<Fragment>(f);
  }

  @Override
  public Fragment getMenuFragment() {
    Fragment f = wMenuFragment.get();
    if (f == null) {
      f = getSupportFragmentManager().findFragmentById(R.id.menu_frame);
      wMenuFragment = new WeakReference<Fragment>(f);
    }
    return f;
  }

  @Override
  public Fragment getTopFragment() {
    return getSupportFragmentManager().findFragmentById(R.id.content_frame);
  }

  @Override
  public void showMenu() {
    spl.openPane();
  }
  
  @Override
  public void showContent() {
    spl.closePane();
  }

}
Java Source Code List
