git.gag.com Git - debian/openrocket/blob - android/src/pl/polidea/treeview/TreeViewList.java

   1 package pl.polidea.treeview;
   2
   3 import net.sf.openrocket.R;
   4 import android.content.Context;
   5 import android.content.res.TypedArray;
   6 import android.graphics.drawable.Drawable;
   7 import android.util.AttributeSet;
   8 import android.view.Gravity;
   9 import android.view.View;
  10 import android.widget.AdapterView;
  11 import android.widget.ListAdapter;
  12 import android.widget.ListView;
  13
  14 /**
  15  * Tree view, expandable multi-level.
  16  *
  17  * <pre>
  18  * attr ref pl.polidea.treeview.R.styleable#TreeViewList_collapsible
  19  * attr ref pl.polidea.treeview.R.styleable#TreeViewList_src_expanded
  20  * attr ref pl.polidea.treeview.R.styleable#TreeViewList_src_collapsed
  21  * attr ref pl.polidea.treeview.R.styleable#TreeViewList_indent_width
  22  * attr ref pl.polidea.treeview.R.styleable#TreeViewList_handle_trackball_press
  23  * attr ref pl.polidea.treeview.R.styleable#TreeViewList_indicator_gravity
  24  * attr ref pl.polidea.treeview.R.styleable#TreeViewList_indicator_background
  25  * attr ref pl.polidea.treeview.R.styleable#TreeViewList_row_background
  26  * </pre>
  27  */
  28 public class TreeViewList extends ListView {
  29     private static final int DEFAULT_COLLAPSED_RESOURCE = R.drawable.collapsed;
  30     private static final int DEFAULT_EXPANDED_RESOURCE = R.drawable.expanded;
  31     private static final int DEFAULT_INDENT = 0;
  32     private static final int DEFAULT_GRAVITY = Gravity.LEFT
  33             | Gravity.CENTER_VERTICAL;
  34     private Drawable expandedDrawable;
  35     private Drawable collapsedDrawable;
  36     private Drawable rowBackgroundDrawable;
  37     private Drawable indicatorBackgroundDrawable;
  38     private int indentWidth = 0;
  39     private int indicatorGravity = 0;
  40     private AbstractTreeViewAdapter< ? > treeAdapter;
  41     private boolean collapsible;
  42     private boolean handleTrackballPress;
  43
  44     public TreeViewList(final Context context, final AttributeSet attrs) {
  45         this(context, attrs, R.style.treeViewListStyle);
  46     }
  47
  48         public TreeViewList(final Context context) {
  49         this(context, null);
  50     }
  51
  52     public TreeViewList(final Context context, final AttributeSet attrs,
  53             final int defStyle) {
  54         super(context, attrs, defStyle);
  55         parseAttributes(context, attrs);
  56     }
  57
  58     private void parseAttributes(final Context context, final AttributeSet attrs) {
  59         final TypedArray a = context.obtainStyledAttributes(attrs,
  60                 R.styleable.TreeViewList);
  61         expandedDrawable = a.getDrawable(R.styleable.TreeViewList_src_expanded);
  62         if (expandedDrawable == null) {
  63             expandedDrawable = context.getResources().getDrawable(
  64                     DEFAULT_EXPANDED_RESOURCE);
  65         }
  66         collapsedDrawable = a
  67                 .getDrawable(R.styleable.TreeViewList_src_collapsed);
  68         if (collapsedDrawable == null) {
  69             collapsedDrawable = context.getResources().getDrawable(
  70                     DEFAULT_COLLAPSED_RESOURCE);
  71         }
  72         indentWidth = a.getDimensionPixelSize(
  73                 R.styleable.TreeViewList_indent_width, DEFAULT_INDENT);
  74         indicatorGravity = a.getInteger(
  75                 R.styleable.TreeViewList_indicator_gravity, DEFAULT_GRAVITY);
  76         indicatorBackgroundDrawable = a
  77                 .getDrawable(R.styleable.TreeViewList_indicator_background);
  78         rowBackgroundDrawable = a
  79                 .getDrawable(R.styleable.TreeViewList_row_background);
  80         collapsible = a.getBoolean(R.styleable.TreeViewList_collapsible, true);
  81         handleTrackballPress = a.getBoolean(
  82                 R.styleable.TreeViewList_handle_trackball_press, true);
  83     }
  84
  85     @Override
  86     public void setAdapter(final ListAdapter adapter) {
  87         if (!(adapter instanceof AbstractTreeViewAdapter)) {
  88             throw new TreeConfigurationException(
  89                     "The adapter is not of TreeViewAdapter type");
  90         }
  91         treeAdapter = (AbstractTreeViewAdapter< ? >) adapter;
  92         syncAdapter();
  93         super.setAdapter(treeAdapter);
  94     }
  95
  96     private void syncAdapter() {
  97         treeAdapter.setCollapsedDrawable(collapsedDrawable);
  98         treeAdapter.setExpandedDrawable(expandedDrawable);
  99         treeAdapter.setIndicatorGravity(indicatorGravity);
 100         treeAdapter.setIndentWidth(indentWidth);
 101         treeAdapter.setIndicatorBackgroundDrawable(indicatorBackgroundDrawable);
 102         treeAdapter.setRowBackgroundDrawable(rowBackgroundDrawable);
 103         treeAdapter.setCollapsible(collapsible);
 104         if (handleTrackballPress) {
 105             setOnItemClickListener(new OnItemClickListener() {
 106                 @Override
 107                 public void onItemClick(final AdapterView< ? > parent,
 108                         final View view, final int position, final long id) {
 109                     treeAdapter.handleItemClick(view, view.getTag());
 110                 }
 111             });
 112         } else {
 113             setOnClickListener(null);
 114         }
 115
 116     }
 117
 118     public void setExpandedDrawable(final Drawable expandedDrawable) {
 119         this.expandedDrawable = expandedDrawable;
 120         syncAdapter();
 121         treeAdapter.refresh();
 122     }
 123
 124     public void setCollapsedDrawable(final Drawable collapsedDrawable) {
 125         this.collapsedDrawable = collapsedDrawable;
 126         syncAdapter();
 127         treeAdapter.refresh();
 128     }
 129
 130     public void setRowBackgroundDrawable(final Drawable rowBackgroundDrawable) {
 131         this.rowBackgroundDrawable = rowBackgroundDrawable;
 132         syncAdapter();
 133         treeAdapter.refresh();
 134     }
 135
 136     public void setIndicatorBackgroundDrawable(
 137             final Drawable indicatorBackgroundDrawable) {
 138         this.indicatorBackgroundDrawable = indicatorBackgroundDrawable;
 139         syncAdapter();
 140         treeAdapter.refresh();
 141     }
 142
 143     public void setIndentWidth(final int indentWidth) {
 144         this.indentWidth = indentWidth;
 145         syncAdapter();
 146         treeAdapter.refresh();
 147     }
 148
 149     public void setIndicatorGravity(final int indicatorGravity) {
 150         this.indicatorGravity = indicatorGravity;
 151         syncAdapter();
 152         treeAdapter.refresh();
 153     }
 154
 155     public void setCollapsible(final boolean collapsible) {
 156         this.collapsible = collapsible;
 157         syncAdapter();
 158         treeAdapter.refresh();
 159     }
 160
 161     public void setHandleTrackballPress(final boolean handleTrackballPress) {
 162         this.handleTrackballPress = handleTrackballPress;
 163         syncAdapter();
 164         treeAdapter.refresh();
 165     }
 166
 167     public Drawable getExpandedDrawable() {
 168         return expandedDrawable;
 169     }
 170
 171     public Drawable getCollapsedDrawable() {
 172         return collapsedDrawable;
 173     }
 174
 175     public Drawable getRowBackgroundDrawable() {
 176         return rowBackgroundDrawable;
 177     }
 178
 179     public Drawable getIndicatorBackgroundDrawable() {
 180         return indicatorBackgroundDrawable;
 181     }
 182
 183     public int getIndentWidth() {
 184         return indentWidth;
 185     }
 186
 187     public int getIndicatorGravity() {
 188         return indicatorGravity;
 189     }
 190
 191     public boolean isCollapsible() {
 192         return collapsible;
 193     }
 194
 195     public boolean isHandleTrackballPress() {
 196         return handleTrackballPress;
 197     }
 198
 199 }