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

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