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Diffstat (limited to 'subsonic-android/src/github/daneren2005/dsub/view/MergeAdapter.java')
| -rw-r--r-- | subsonic-android/src/github/daneren2005/dsub/view/MergeAdapter.java | 292 |
1 files changed, 0 insertions, 292 deletions
diff --git a/subsonic-android/src/github/daneren2005/dsub/view/MergeAdapter.java b/subsonic-android/src/github/daneren2005/dsub/view/MergeAdapter.java deleted file mode 100644 index bfe777ea..00000000 --- a/subsonic-android/src/github/daneren2005/dsub/view/MergeAdapter.java +++ /dev/null @@ -1,292 +0,0 @@ -/*** - Copyright (c) 2008-2009 CommonsWare, LLC - Portions (c) 2009 Google, Inc. - - Licensed under the Apache License, Version 2.0 (the "License"); you may - not use this file except in compliance with the License. You may obtain - a copy of the License at - http://www.apache.org/licenses/LICENSE-2.0 - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - */ - -package github.daneren2005.dsub.view; - -import android.database.DataSetObserver; -import android.view.View; -import android.view.ViewGroup; -import android.widget.BaseAdapter; -import android.widget.ListAdapter; - -import java.util.ArrayList; -import java.util.List; -import java.util.Arrays; - -import github.daneren2005.dsub.view.SackOfViewsAdapter; - -/** - * Adapter that merges multiple child adapters and views - * into a single contiguous whole. - * <p/> - * Adapters used as pieces within MergeAdapter must - * have view type IDs monotonically increasing from 0. Ideally, - * adapters also have distinct ranges for their row ids, as - * returned by getItemId(). - */ -public class MergeAdapter extends BaseAdapter { - - private final CascadeDataSetObserver observer = new CascadeDataSetObserver(); - private final ArrayList<ListAdapter> pieces = new ArrayList<ListAdapter>(); - - /** - * Stock constructor, simply chaining to the superclass. - */ - public MergeAdapter() { - super(); - } - - /** - * Adds a new adapter to the roster of things to appear - * in the aggregate list. - * - * @param adapter Source for row views for this section - */ - public void addAdapter(ListAdapter adapter) { - pieces.add(adapter); - adapter.registerDataSetObserver(observer); - } - - public void removeAdapter(ListAdapter adapter) { - adapter.unregisterDataSetObserver(observer); - pieces.remove(adapter); - } - - /** - * Adds a new View to the roster of things to appear - * in the aggregate list. - * - * @param view Single view to add - */ - public ListAdapter addView(View view) { - return addView(view, false); - } - - /** - * Adds a new View to the roster of things to appear - * in the aggregate list. - * - * @param view Single view to add - * @param enabled false if views are disabled, true if enabled - */ - public ListAdapter addView(View view, boolean enabled) { - return addViews(Arrays.asList(view), enabled); - } - - /** - * Adds a list of views to the roster of things to appear - * in the aggregate list. - * - * @param views List of views to add - */ - public ListAdapter addViews(List<View> views) { - return addViews(views, false); - } - - /** - * Adds a list of views to the roster of things to appear - * in the aggregate list. - * - * @param views List of views to add - * @param enabled false if views are disabled, true if enabled - */ - public ListAdapter addViews(List<View> views, boolean enabled) { - ListAdapter adapter = enabled ? new EnabledSackAdapter(views) : new SackOfViewsAdapter(views); - addAdapter(adapter); - return adapter; - } - - /** - * Get the data item associated with the specified - * position in the data set. - * - * @param position Position of the item whose data we want - */ - @Override - public Object getItem(int position) { - for (ListAdapter piece : pieces) { - int size = piece.getCount(); - - if (position < size) { - return (piece.getItem(position)); - } - - position -= size; - } - - return (null); - } - - /** - * How many items are in the data set represented by this - * Adapter. - */ - @Override - public int getCount() { - int total = 0; - - for (ListAdapter piece : pieces) { - total += piece.getCount(); - } - - return (total); - } - - /** - * Returns the number of types of Views that will be - * created by getView(). - */ - @Override - public int getViewTypeCount() { - int total = 0; - - for (ListAdapter piece : pieces) { - total += piece.getViewTypeCount(); - } - - return (Math.max(total, 1)); // needed for setListAdapter() before content add' - } - - /** - * Get the type of View that will be created by getView() - * for the specified item. - * - * @param position Position of the item whose data we want - */ - @Override - public int getItemViewType(int position) { - int typeOffset = 0; - int result = -1; - - for (ListAdapter piece : pieces) { - int size = piece.getCount(); - - if (position < size) { - result = typeOffset + piece.getItemViewType(position); - break; - } - - position -= size; - typeOffset += piece.getViewTypeCount(); - } - - return (result); - } - - /** - * Are all items in this ListAdapter enabled? If yes it - * means all items are selectable and clickable. - */ - @Override - public boolean areAllItemsEnabled() { - return (false); - } - - /** - * Returns true if the item at the specified position is - * not a separator. - * - * @param position Position of the item whose data we want - */ - @Override - public boolean isEnabled(int position) { - for (ListAdapter piece : pieces) { - int size = piece.getCount(); - - if (position < size) { - return (piece.isEnabled(position)); - } - - position -= size; - } - - return (false); - } - - /** - * Get a View that displays the data at the specified - * position in the data set. - * - * @param position Position of the item whose data we want - * @param convertView View to recycle, if not null - * @param parent ViewGroup containing the returned View - */ - @Override - public View getView(int position, View convertView, - ViewGroup parent) { - for (ListAdapter piece : pieces) { - int size = piece.getCount(); - - if (position < size) { - - return (piece.getView(position, convertView, parent)); - } - - position -= size; - } - - return (null); - } - - /** - * Get the row id associated with the specified position - * in the list. - * - * @param position Position of the item whose data we want - */ - @Override - public long getItemId(int position) { - for (ListAdapter piece : pieces) { - int size = piece.getCount(); - - if (position < size) { - return (piece.getItemId(position)); - } - - position -= size; - } - - return (-1); - } - - private static class EnabledSackAdapter extends SackOfViewsAdapter { - public EnabledSackAdapter(List<View> views) { - super(views); - } - - @Override - public boolean areAllItemsEnabled() { - return (true); - } - - @Override - public boolean isEnabled(int position) { - return (true); - } - } - - private class CascadeDataSetObserver extends DataSetObserver { - @Override - public void onChanged() { - notifyDataSetChanged(); - } - - @Override - public void onInvalidated() { - notifyDataSetInvalidated(); - } - } -} - |