src/eu/alefzero/owncloud/PathLayout.java

   1 package eu.alefzero.owncloud;
   2
   3 import java.util.Stack;
   4
   5 import android.content.Context;
   6 import android.util.AttributeSet;
   7 import android.widget.HorizontalScrollView;
   8 import android.widget.ImageView;
   9 import android.widget.LinearLayout;
  10 import android.widget.ScrollView;
  11 import android.widget.TextView;
  12
  13 public class PathLayout extends LinearLayout {
  14
  15   private Stack<String> paths;
  16   ScrollView internalScroll;
  17   LinearLayout view;
  18
  19   public PathLayout(Context context) {
  20     super(context);
  21     initialize();
  22   }
  23
  24   public PathLayout(Context context, AttributeSet attrs) {
  25     super(context, attrs);
  26     initialize();
  27   }
  28
  29   public String pop() {
  30     if (paths.empty()) {
  31       return null;
  32     }
  33     int start = paths.size()*2-2;
  34     int count = 2;
  35     if (paths.size() == 1) {
  36       start++;
  37       count--;
  38     }
  39     view.removeViews(start, count);
  40     return paths.pop();
  41   }
  42
  43   public void push(String path) {
  44     // its weird that we cannot declare static imgView as path separator
  45     if (!paths.empty()) {
  46       ImageView iv = new ImageView(getContext());
  47       iv.setImageDrawable(getResources().getDrawable(R.drawable.breadcrumb));
  48       iv.setPadding(2, 0, 2, 0);
  49       view.addView(iv);
  50     }
  51     TextView tv = new TextView(getContext());
  52     tv.setLayoutParams(getLayoutParams());
  53     tv.setText(path);
  54     view.addView(tv);
  55     HorizontalScrollView hsv = (HorizontalScrollView) internalScroll.getChildAt(0);
  56     hsv.smoothScrollTo(hsv.getMaxScrollAmount()*2, 0);
  57     paths.push(path);
  58   }
  59
  60   public String peek() {
  61     return paths.peek();
  62   }
  63
  64   private void initialize() {
  65     paths = new Stack<String>();
  66     internalScroll = new ScrollView(getContext());
  67     internalScroll.setFillViewport(true);
  68     HorizontalScrollView hsv = new HorizontalScrollView(getContext());
  69     hsv.setSmoothScrollingEnabled(true);
  70     internalScroll.addView(hsv);
  71     view = new LinearLayout(getContext());
  72     addView(internalScroll);
  73     hsv.addView(view);
  74     ImageView iv = new ImageView(getContext());
  75     iv.setImageDrawable(getResources().getDrawable(R.drawable.breadcrumb));
  76     view.addView(iv);
  77   }
  78
  79 }