+++ /dev/null
-package pl.polidea.treeview;
-
-import net.sf.openrocket.R;
-import android.app.Activity;
-import android.content.Context;
-import android.database.DataSetObserver;
-import android.graphics.drawable.Drawable;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.View.OnClickListener;
-import android.view.ViewGroup;
-import android.widget.BaseAdapter;
-import android.widget.FrameLayout;
-import android.widget.FrameLayout.LayoutParams;
-import android.widget.ImageView;
-import android.widget.ImageView.ScaleType;
-import android.widget.LinearLayout;
-import android.widget.ListAdapter;
-
-/**
- * Adapter used to feed the table view.
- *
- * @param <T>
- * class for ID of the tree
- */
-public abstract class AbstractTreeViewAdapter<T> extends BaseAdapter implements
- ListAdapter {
- private final TreeStateManager<T> treeStateManager;
- private final int numberOfLevels;
- private final LayoutInflater layoutInflater;
-
- private int indentWidth = 0;
- private int indicatorGravity = 0;
- private Drawable collapsedDrawable;
- private Drawable expandedDrawable;
- private Drawable indicatorBackgroundDrawable;
- private Drawable rowBackgroundDrawable;
-
- private final OnClickListener indicatorClickListener = new OnClickListener() {
- @Override
- public void onClick(final View v) {
- @SuppressWarnings("unchecked")
- final T id = (T) v.getTag();
- expandCollapse(id);
- }
- };
-
- private boolean collapsible;
- private final Activity activity;
-
- public Activity getActivity() {
- return activity;
- }
-
- protected TreeStateManager<T> getManager() {
- return treeStateManager;
- }
-
- protected void expandCollapse(final T id) {
- final TreeNodeInfo<T> info = treeStateManager.getNodeInfo(id);
- if (!info.isWithChildren()) {
- // ignore - no default action
- return;
- }
- if (info.isExpanded()) {
- treeStateManager.collapseChildren(id);
- } else {
- treeStateManager.expandDirectChildren(id);
- }
- }
-
- private void calculateIndentWidth() {
- if (expandedDrawable != null) {
- indentWidth = Math.max(getIndentWidth(),
- expandedDrawable.getIntrinsicWidth());
- }
- if (collapsedDrawable != null) {
- indentWidth = Math.max(getIndentWidth(),
- collapsedDrawable.getIntrinsicWidth());
- }
- }
-
- public AbstractTreeViewAdapter(final Activity activity,
- final TreeStateManager<T> treeStateManager, final int numberOfLevels) {
- this.activity = activity;
- this.treeStateManager = treeStateManager;
- this.layoutInflater = (LayoutInflater) activity
- .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
- this.numberOfLevels = numberOfLevels;
- this.collapsedDrawable = null;
- this.expandedDrawable = null;
- this.rowBackgroundDrawable = null;
- this.indicatorBackgroundDrawable = null;
- }
-
- @Override
- public void registerDataSetObserver(final DataSetObserver observer) {
- treeStateManager.registerDataSetObserver(observer);
- }
-
- @Override
- public void unregisterDataSetObserver(final DataSetObserver observer) {
- treeStateManager.unregisterDataSetObserver(observer);
- }
-
- @Override
- public int getCount() {
- return treeStateManager.getVisibleCount();
- }
-
- @Override
- public Object getItem(final int position) {
- return getItemId(position);
- }
-
- public T getTreeId(final int position) {
- return treeStateManager.getVisibleList().get(position);
- }
-
- public TreeNodeInfo<T> getTreeNodeInfo(final int position) {
- return treeStateManager.getNodeInfo(getTreeId(position));
- }
-
- @Override
- public boolean hasStableIds() { // NOPMD
- return true;
- }
-
- @Override
- public int getItemViewType(final int position) {
- return getTreeNodeInfo(position).getLevel();
- }
-
- @Override
- public int getViewTypeCount() {
- return numberOfLevels;
- }
-
- @Override
- public boolean isEmpty() {
- return getCount() == 0;
- }
-
- @Override
- public boolean areAllItemsEnabled() { // NOPMD
- return true;
- }
-
- @Override
- public boolean isEnabled(final int position) { // NOPMD
- return true;
- }
-
- protected int getTreeListItemWrapperId() {
- return R.layout.tree_list_item_wrapper;
- }
-
- @Override
- public final View getView(final int position, final View convertView,
- final ViewGroup parent) {
- final TreeNodeInfo<T> nodeInfo = getTreeNodeInfo(position);
- if (convertView == null) {
- final LinearLayout layout = (LinearLayout) layoutInflater.inflate(
- getTreeListItemWrapperId(), null);
- return populateTreeItem(layout, getNewChildView(nodeInfo),
- nodeInfo, true);
- } else {
- final LinearLayout linear = (LinearLayout) convertView;
- final FrameLayout frameLayout = (FrameLayout) linear
- .findViewById(R.id.treeview_list_item_frame);
- final View childView = frameLayout.getChildAt(0);
- updateView(childView, nodeInfo);
- return populateTreeItem(linear, childView, nodeInfo, false);
- }
- }
-
- /**
- * Called when new view is to be created.
- *
- * @param treeNodeInfo
- * node info
- * @return view that should be displayed as tree content
- */
- public abstract View getNewChildView(TreeNodeInfo<T> treeNodeInfo);
-
- /**
- * Called when new view is going to be reused. You should update the view
- * and fill it in with the data required to display the new information. You
- * can also create a new view, which will mean that the old view will not be
- * reused.
- *
- * @param view
- * view that should be updated with the new values
- * @param treeNodeInfo
- * node info used to populate the view
- * @return view to used as row indented content
- */
- public abstract View updateView(View view, TreeNodeInfo<T> treeNodeInfo);
-
- /**
- * Retrieves background drawable for the node.
- *
- * @param treeNodeInfo
- * node info
- * @return drawable returned as background for the whole row. Might be null,
- * then default background is used
- */
- public Drawable getBackgroundDrawable(final TreeNodeInfo<T> treeNodeInfo) { // NOPMD
- return null;
- }
-
- private Drawable getDrawableOrDefaultBackground(final Drawable r) {
- if (r == null) {
- return activity.getResources()
- .getDrawable(R.drawable.list_selector_background).mutate();
- } else {
- return r;
- }
- }
-
- public final LinearLayout populateTreeItem(final LinearLayout layout,
- final View childView, final TreeNodeInfo<T> nodeInfo,
- final boolean newChildView) {
- final Drawable individualRowDrawable = getBackgroundDrawable(nodeInfo);
- layout.setBackgroundDrawable(individualRowDrawable == null ? getDrawableOrDefaultBackground(rowBackgroundDrawable)
- : individualRowDrawable);
- final LinearLayout.LayoutParams indicatorLayoutParams = new LinearLayout.LayoutParams(
- calculateIndentation(nodeInfo), LayoutParams.FILL_PARENT);
- final LinearLayout indicatorLayout = (LinearLayout) layout
- .findViewById(R.id.treeview_list_item_image_layout);
- indicatorLayout.setGravity(indicatorGravity);
- indicatorLayout.setLayoutParams(indicatorLayoutParams);
- final ImageView image = (ImageView) layout
- .findViewById(R.id.treeview_list_item_image);
- image.setImageDrawable(getDrawable(nodeInfo));
- image.setBackgroundDrawable(getDrawableOrDefaultBackground(indicatorBackgroundDrawable));
- image.setScaleType(ScaleType.CENTER);
- image.setTag(nodeInfo.getId());
- if (nodeInfo.isWithChildren() && collapsible) {
- image.setOnClickListener(indicatorClickListener);
- } else {
- image.setOnClickListener(null);
- }
- layout.setTag(nodeInfo.getId());
- final FrameLayout frameLayout = (FrameLayout) layout
- .findViewById(R.id.treeview_list_item_frame);
- final FrameLayout.LayoutParams childParams = new FrameLayout.LayoutParams(
- LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
- if (newChildView) {
- frameLayout.addView(childView, childParams);
- }
- frameLayout.setTag(nodeInfo.getId());
- return layout;
- }
-
- protected int calculateIndentation(final TreeNodeInfo<T> nodeInfo) {
- return getIndentWidth() * (nodeInfo.getLevel() + (collapsible ? 1 : 0));
- }
-
- private Drawable getDrawable(final TreeNodeInfo<T> nodeInfo) {
- if (!nodeInfo.isWithChildren() || !collapsible) {
- return getDrawableOrDefaultBackground(indicatorBackgroundDrawable);
- }
- if (nodeInfo.isExpanded()) {
- return expandedDrawable;
- } else {
- return collapsedDrawable;
- }
- }
-
- public void setIndicatorGravity(final int indicatorGravity) {
- this.indicatorGravity = indicatorGravity;
- }
-
- public void setCollapsedDrawable(final Drawable collapsedDrawable) {
- this.collapsedDrawable = collapsedDrawable;
- calculateIndentWidth();
- }
-
- public void setExpandedDrawable(final Drawable expandedDrawable) {
- this.expandedDrawable = expandedDrawable;
- calculateIndentWidth();
- }
-
- public void setIndentWidth(final int indentWidth) {
- this.indentWidth = indentWidth;
- calculateIndentWidth();
- }
-
- public void setRowBackgroundDrawable(final Drawable rowBackgroundDrawable) {
- this.rowBackgroundDrawable = rowBackgroundDrawable;
- }
-
- public void setIndicatorBackgroundDrawable(
- final Drawable indicatorBackgroundDrawable) {
- this.indicatorBackgroundDrawable = indicatorBackgroundDrawable;
- }
-
- public void setCollapsible(final boolean collapsible) {
- this.collapsible = collapsible;
- }
-
- public void refresh() {
- treeStateManager.refresh();
- }
-
- private int getIndentWidth() {
- return indentWidth;
- }
-
- @SuppressWarnings("unchecked")
- public void handleItemClick(final View view, final Object id) {
- expandCollapse((T) id);
- }
-
-}
projects / debian / openrocket / blobdiff