Missing features

README.md

@@ -24,6 +24,8 @@ Tree view implementation for android
 + 3. Save state after rotation
 + 4. Selection mode for nodes
 + 5. Dynamic add/remove node
++ 6. Auto scroll to selected leaf
++ 7. Auto scroll to expanded node
 
 ### Known Limitations
 + For Android 4.0 (+/- nearest version) if you have too deep view hierarchy and with tree its easily possible, your app may crash

app/src/main/java/com/unnamed/b/atv/sample/activity/MainActivity.java

@@ -14,6 +14,7 @@
 import com.unnamed.b.atv.sample.fragment.FolderStructureFragment;
 import com.unnamed.b.atv.sample.fragment.SelectableTreeFragment;
 import com.unnamed.b.atv.sample.fragment.TwoDScrollingArrowExpandFragment;
+import com.unnamed.b.atv.sample.fragment.TwoDScrollingArrowExpandNodeFragment;
 import com.unnamed.b.atv.sample.fragment.TwoDScrollingFragment;
 
 import java.util.ArrayList;
@@ -36,6 +37,7 @@ protected void onCreate(Bundle savedInstanceState) {
         listItems.put("Selectable Nodes", SelectableTreeFragment.class);
         listItems.put("2d scrolling", TwoDScrollingFragment.class);
         listItems.put("Expand with arrow only", TwoDScrollingArrowExpandFragment.class);
+        listItems.put("Expand with arrow one node only", TwoDScrollingArrowExpandNodeFragment.class);
 
 
         final List<String> list = new ArrayList(listItems.keySet());

app/src/main/java/com/unnamed/b/atv/sample/fragment/TwoDScrollingArrowExpandFragment.java

@@ -46,7 +46,7 @@ public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle sa
         tView.setDefaultNodeClickListener(TwoDScrollingArrowExpandFragment.this);
         tView.setDefaultViewHolder(ArrowExpandSelectableHeaderHolder.class);
         containerView.addView(tView.getView());
-        tView.setUseAutoToggle(false);
+        tView.setExpansionAutoToggle(false);
 
         tView.expandAll();
 

app/src/main/java/com/unnamed/b/atv/sample/fragment/TwoDScrollingArrowExpandNodeFragment.java

@@ -0,0 +1,88 @@
+package com.unnamed.b.atv.sample.fragment;
+
+import android.app.Fragment;
+import android.os.Bundle;
+import android.text.TextUtils;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Toast;
+
+import com.unnamed.b.atv.model.TreeNode;
+import com.unnamed.b.atv.sample.R;
+import com.unnamed.b.atv.sample.holder.ArrowExpandSelectableHeaderHolder;
+import com.unnamed.b.atv.sample.holder.IconTreeItemHolder;
+import com.unnamed.b.atv.view.AndroidTreeView;
+
+/**
+ * Created by Bogdan Melnychuk on 2/12/15 modified by Szigeti Peter 2/2/16.
+ */
+public class TwoDScrollingArrowExpandNodeFragment extends Fragment implements TreeNode.TreeNodeClickListener{
+    private static final String NAME = "Very long name for folder";
+    private AndroidTreeView tView;
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View rootView = inflater.inflate(R.layout.fragment_selectable_nodes, null, false);
+        rootView.findViewById(R.id.status).setVisibility(View.GONE);
+        ViewGroup containerView = (ViewGroup) rootView.findViewById(R.id.container);
+
+        TreeNode root = TreeNode.root();
+
+        TreeNode s1 = new TreeNode(new IconTreeItemHolder.IconTreeItem(R.string.ic_folder, "Folder with very long name ")).setViewHolder(
+            new ArrowExpandSelectableHeaderHolder(getActivity()));
+        TreeNode s2 = new TreeNode(new IconTreeItemHolder.IconTreeItem(R.string.ic_folder, "Another folder with very long name")).setViewHolder(
+            new ArrowExpandSelectableHeaderHolder(getActivity()));
+
+        fillFolder(s1);
+        TreeNode nodeToExpand = fillFolder(s2);
+
+        root.addChildren(s1, s2);
+
+        tView = new AndroidTreeView(getActivity(), root);
+        tView.setDefaultAnimation(true);
+        tView.setUse2dScroll(true);
+        tView.setDefaultContainerStyle(R.style.TreeNodeStyleCustom);
+        tView.setDefaultNodeClickListener(TwoDScrollingArrowExpandNodeFragment.this);
+        tView.setDefaultViewHolder(ArrowExpandSelectableHeaderHolder.class);
+        containerView.addView(tView.getView());
+
+        tView.setAutoScrollToExpandedNode(true);
+        tView.setAutoScrollToSelectedLeafs(true);
+        tView.setLeafSelectionAutoToggle(true);
+
+        tView.expandNode(s1);
+        tView.expandNodeIncludingParents(nodeToExpand, true);
+
+        if (savedInstanceState != null) {
+            String state = savedInstanceState.getString("tState");
+            if (!TextUtils.isEmpty(state)) {
+                tView.restoreState(state);
+            }
+        }
+        return rootView;
+    }
+
+    private TreeNode fillFolder(TreeNode folder) {
+        TreeNode currentNode = folder;
+        TreeNode file = null;
+        for (int i = 0; i < 6; i++) {
+            file = new TreeNode(new IconTreeItemHolder.IconTreeItem(R.string.ic_folder, NAME + " " + i));
+            currentNode.addChild(file);
+            currentNode = file;
+        }
+        return file;
+    }
+
+    @Override
+    public void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        outState.putString("tState", tView.getSaveState());
+    }
+
+    @Override
+    public void onClick(TreeNode node, Object value) {
+        Toast toast = Toast.makeText(getActivity(), ((IconTreeItemHolder.IconTreeItem)value).text, Toast.LENGTH_SHORT);
+        toast.show();
+    }
+}

app/src/main/java/com/unnamed/b/atv/sample/holder/ArrowExpandSelectableHeaderHolder.java

@@ -42,7 +42,7 @@ public View createNodeView(final TreeNode node, IconTreeItemHolder.IconTreeItem
         arrowView.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-                tView.toggleNode(node);
+                tView.toggleNodeExpansion(node);
             }
         });
 

library/src/main/java/com/unnamed/b/atv/model/TreeNode.java

@@ -1,6 +1,7 @@
 package com.unnamed.b.atv.model;
 
 import android.content.Context;
+import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
@@ -97,6 +98,10 @@ public boolean isLeaf() {
         return size() == 0;
     }
 
+    public boolean isBranch() {
+        return size() > 0;
+    }
+
     public Object getValue() {
         return mValue;
     }
@@ -112,6 +117,9 @@ public TreeNode setExpanded(boolean expanded) {
 
     public void setSelected(boolean selected) {
         mSelected = selected;
+        if(mViewHolder != null) {
+            mViewHolder.toggleSelection(mSelected);
+        }
     }
 
     public boolean isSelected() {
@@ -191,6 +199,18 @@ public BaseNodeViewHolder getViewHolder() {
         return mViewHolder;
     }
 
+    public boolean isInitialized() {
+        return mViewHolder != null ? mViewHolder.isInitialized() : false;
+    }
+
+    public View getView() {
+        return mViewHolder != null ? mViewHolder.getView() : null;
+    }
+
+    public Boolean hasView() {
+        return getView() != null;
+    }
+
     public boolean isFirstChild() {
         if (!isRoot()) {
             List<TreeNode> parentChildren = mParent.children;
@@ -225,9 +245,11 @@ public static abstract class BaseNodeViewHolder<E> {
         private View mView;
         protected int containerStyle;
         protected Context context;
+        protected LayoutInflater layoutInflater;
 
         public BaseNodeViewHolder(Context context) {
             this.context = context;
+            this.layoutInflater = LayoutInflater.from(context);
         }
 
         public View getView() {
@@ -280,5 +302,9 @@ public void toggle(boolean active) {
         public void toggleSelectionMode(boolean editModeEnabled) {
             // empty
         }
+
+        public void toggleSelection(boolean isSelected) {
+
+        }
     }
 }