mirror of https://github.com/tasks/tasks
Sectioned headers in the assignment picker. booyah
Sam Bosley
14 years ago
parent
e92c2ef048
commit
197fe02be4
Binary file not shown.
@ -0,0 +1,10 @@
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<?xml version="1.0" encoding="utf-8"?>
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<TextView
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xmlns:android="http://schemas.android.com/apk/res/android"
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android:id="@+id/list_header_title"
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android:layout_width="fill_parent"
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android:layout_height="wrap_content"
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android:paddingTop="2dip"
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android:paddingBottom="2dip"
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android:paddingLeft="7dip"
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style="@style/TEA_list_header" />
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@ -0,0 +1,379 @@
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/***
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Copyright (c) 2008-2009 CommonsWare, LLC
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Portions (c) 2009 Google, Inc.
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Licensed under the Apache License, Version 2.0 (the "License"); you may
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not use this file except in compliance with the License. You may obtain
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a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package com.commonsware.cwac.merge;
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import android.database.DataSetObserver;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.BaseAdapter;
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import android.widget.ListAdapter;
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import android.widget.SectionIndexer;
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import java.util.ArrayList;
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import java.util.List;
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import com.commonsware.cwac.sacklist.SackOfViewsAdapter;
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/**
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* Adapter that merges multiple child adapters and views
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* into a single contiguous whole.
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*
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* Adapters used as pieces within MergeAdapter must
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* have view type IDs monotonically increasing from 0. Ideally,
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* adapters also have distinct ranges for their row ids, as
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* returned by getItemId().
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*
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*/
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public class MergeAdapter extends BaseAdapter implements SectionIndexer {
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protected ArrayList<ListAdapter> pieces=new ArrayList<ListAdapter>();
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/**
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* Stock constructor, simply chaining to the superclass.
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*/
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public MergeAdapter() {
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super();
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}
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/**
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* Adds a new adapter to the roster of things to appear
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* in the aggregate list.
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* @param adapter Source for row views for this section
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*/
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public void addAdapter(ListAdapter adapter) {
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pieces.add(adapter);
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adapter.registerDataSetObserver(new CascadeDataSetObserver());
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}
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/**
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* Adds a new View to the roster of things to appear
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* in the aggregate list.
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* @param view Single view to add
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*/
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public void addView(View view) {
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addView(view, false);
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}
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/**
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* Adds a new View to the roster of things to appear
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* in the aggregate list.
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* @param view Single view to add
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* @param enabled false if views are disabled, true if enabled
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*/
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public void addView(View view, boolean enabled) {
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ArrayList<View> list=new ArrayList<View>(1);
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list.add(view);
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addViews(list, enabled);
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}
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/**
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* Adds a list of views to the roster of things to appear
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* in the aggregate list.
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* @param views List of views to add
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*/
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public void addViews(List<View> views) {
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addViews(views, false);
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}
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/**
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* Adds a list of views to the roster of things to appear
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* in the aggregate list.
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* @param views List of views to add
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* @param enabled false if views are disabled, true if enabled
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*/
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public void addViews(List<View> views, boolean enabled) {
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if (enabled) {
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addAdapter(new EnabledSackAdapter(views));
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}
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else {
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addAdapter(new SackOfViewsAdapter(views));
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}
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}
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/**
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* Get the data item associated with the specified
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* position in the data set.
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* @param position Position of the item whose data we want
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*/
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@Override
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public Object getItem(int position) {
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for (ListAdapter piece : pieces) {
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int size=piece.getCount();
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if (position<size) {
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return(piece.getItem(position));
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}
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position-=size;
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}
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return(null);
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}
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/**
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* Get the adapter associated with the specified
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* position in the data set.
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* @param position Position of the item whose adapter we want
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*/
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public ListAdapter getAdapter(int position) {
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for (ListAdapter piece : pieces) {
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int size=piece.getCount();
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if (position<size) {
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return(piece);
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}
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position-=size;
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}
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return(null);
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}
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/**
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* How many items are in the data set represented by this
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* Adapter.
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*/
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@Override
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public int getCount() {
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int total=0;
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for (ListAdapter piece : pieces) {
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total+=piece.getCount();
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}
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return(total);
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}
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/**
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* Returns the number of types of Views that will be
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* created by getView().
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*/
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@Override
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public int getViewTypeCount() {
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int total=0;
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for (ListAdapter piece : pieces) {
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total+=piece.getViewTypeCount();
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}
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return(Math.max(total, 1)); // needed for setListAdapter() before content add'
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}
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/**
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* Get the type of View that will be created by getView()
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* for the specified item.
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* @param position Position of the item whose data we want
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*/
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@Override
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public int getItemViewType(int position) {
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int typeOffset=0;
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int result=-1;
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for (ListAdapter piece : pieces) {
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int size=piece.getCount();
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if (position<size) {
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result=typeOffset+piece.getItemViewType(position);
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break;
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}
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position-=size;
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typeOffset+=piece.getViewTypeCount();
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}
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return(result);
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}
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/**
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* Are all items in this ListAdapter enabled? If yes it
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* means all items are selectable and clickable.
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*/
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@Override
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public boolean areAllItemsEnabled() {
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return(false);
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}
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/**
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* Returns true if the item at the specified position is
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* not a separator.
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* @param position Position of the item whose data we want
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*/
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@Override
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public boolean isEnabled(int position) {
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for (ListAdapter piece : pieces) {
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int size=piece.getCount();
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if (position<size) {
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return(piece.isEnabled(position));
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}
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position-=size;
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}
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return(false);
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}
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/**
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* Get a View that displays the data at the specified
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* position in the data set.
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* @param position Position of the item whose data we want
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* @param convertView View to recycle, if not null
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* @param parent ViewGroup containing the returned View
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*/
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@Override
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public View getView(int position, View convertView,
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ViewGroup parent) {
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for (ListAdapter piece : pieces) {
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int size=piece.getCount();
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if (position<size) {
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return(piece.getView(position, convertView, parent));
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}
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position-=size;
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}
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return(null);
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}
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/**
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* Get the row id associated with the specified position
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* in the list.
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* @param position Position of the item whose data we want
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*/
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@Override
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public long getItemId(int position) {
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for (ListAdapter piece : pieces) {
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int size=piece.getCount();
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if (position<size) {
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return(piece.getItemId(position));
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}
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position-=size;
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}
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return(-1);
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}
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@Override
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public int getPositionForSection(int section) {
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int position=0;
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for (ListAdapter piece : pieces) {
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if (piece instanceof SectionIndexer) {
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Object[] sections=((SectionIndexer)piece).getSections();
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int numSections=0;
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if (sections!=null) {
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numSections=sections.length;
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}
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if (section<numSections) {
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return(position+((SectionIndexer)piece).getPositionForSection(section));
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}
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else if (sections!=null) {
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section-=numSections;
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}
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}
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position+=piece.getCount();
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}
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return(0);
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}
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@Override
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public int getSectionForPosition(int position) {
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int section=0;
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for (ListAdapter piece : pieces) {
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int size=piece.getCount();
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if (position<size) {
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if (piece instanceof SectionIndexer) {
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return(section+((SectionIndexer)piece).getSectionForPosition(position));
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}
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return(0);
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}
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else {
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if (piece instanceof SectionIndexer) {
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Object[] sections=((SectionIndexer)piece).getSections();
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if (sections!=null) {
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section+=sections.length;
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}
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}
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}
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position-=size;
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}
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return(0);
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}
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@Override
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public Object[] getSections() {
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ArrayList<Object> sections=new ArrayList<Object>();
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for (ListAdapter piece : pieces) {
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if (piece instanceof SectionIndexer) {
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Object[] curSections=((SectionIndexer)piece).getSections();
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if (curSections!=null) {
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for (Object section : curSections) {
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sections.add(section);
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}
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}
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}
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}
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if (sections.size()==0) {
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return(null);
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}
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return(sections.toArray(new Object[0]));
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}
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private static class EnabledSackAdapter extends SackOfViewsAdapter {
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public EnabledSackAdapter(List<View> views) {
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super(views);
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}
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@Override
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public boolean areAllItemsEnabled() {
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return(true);
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}
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@Override
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public boolean isEnabled(int position) {
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return(true);
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}
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}
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private class CascadeDataSetObserver extends DataSetObserver {
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@Override
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public void onChanged() {
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notifyDataSetChanged();
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}
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@Override
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public void onInvalidated() {
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notifyDataSetInvalidated();
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}
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}
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}
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@ -0,0 +1,102 @@
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package com.commonsware.cwac.merge;
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import java.util.List;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.ListAdapter;
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import android.widget.SpinnerAdapter;
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/**
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* Adapter that merges multiple child adapters into a single
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* contiguous whole to be consumed by a Spinner.
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*
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* Adapters used as pieces within MergeSpinnerAdapter must
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* have view type IDs monotonically increasing from 0.
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* Ideally, adapters also have distinct ranges for their row
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* ids, as returned by getItemId().
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*
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* All Adapters used as pieces within MergeSpinnerAdapter
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* must be properly-configured implementations of
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* SpinnerAdapter (e.g., ArrayAdapter, CursorAdapter).
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*/
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public class MergeSpinnerAdapter extends MergeAdapter {
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/**
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* Stock constructor, simply chaining to the superclass.
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*/
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public MergeSpinnerAdapter() {
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super();
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}
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/*
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* Returns the drop-down View for a given position, by
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* iterating over the pieces. Assumes that all pieces are
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* implementations of SpinnerAdapter.
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*
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* @see android.widget.BaseAdapter#getDropDownView(int,
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* android.view.View, android.view.ViewGroup)
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*/
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public View getDropDownView(int position, View convertView,
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ViewGroup parent) {
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for (ListAdapter piece : pieces) {
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int size=piece.getCount();
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if (position<size) {
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return(((SpinnerAdapter)piece).getDropDownView(position,
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convertView,
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parent));
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}
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position-=size;
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}
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return(null);
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}
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/**
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* Adds a new View to the roster of things to appear in
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* the aggregate list.
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*
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* @param view
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* Single view to add
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*/
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public void addView(View view) {
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throw new RuntimeException("Not supported with MergeSpinnerAdapter");
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}
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/**
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* Adds a new View to the roster of things to appear in
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* the aggregate list.
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*
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* @param view
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* Single view to add
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* @param enabled
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* false if views are disabled, true if enabled
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*/
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public void addView(View view, boolean enabled) {
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throw new RuntimeException("Not supported with MergeSpinnerAdapter");
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}
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/**
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* Adds a list of views to the roster of things to appear
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* in the aggregate list.
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*
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* @param views
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* List of views to add
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*/
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public void addViews(List<View> views) {
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throw new RuntimeException("Not supported with MergeSpinnerAdapter");
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}
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/**
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* Adds a list of views to the roster of things to appear
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* in the aggregate list.
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*
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* @param views
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* List of views to add
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* @param enabled
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* false if views are disabled, true if enabled
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*/
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public void addViews(List<View> views, boolean enabled) {
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throw new RuntimeException("Not supported with MergeSpinnerAdapter");
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}
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}
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Reference in New Issue