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/*
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Separated List Adapter
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Taken from http://jsharkey.org/blog/2008/08/18/separating-lists-with-headers-in-android-09/
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Copyright Jeff Sharkey
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This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
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If a copy of the MPL was not distributed with this file, You can obtain one at
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http://mozilla.org/MPL/2.0/.
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*/
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package com.freerdp.freerdpcore.utils;
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import android.content.Context;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.Adapter;
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import android.widget.ArrayAdapter;
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import android.widget.BaseAdapter;
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import com.freerdp.freerdpcore.R;
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import java.util.LinkedHashMap;
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import java.util.Map;
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public class SeparatedListAdapter extends BaseAdapter
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{
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public final static int TYPE_SECTION_HEADER = 0;
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public final Map<String, Adapter> sections = new LinkedHashMap<String, Adapter>();
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public final ArrayAdapter<String> headers;
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public SeparatedListAdapter(Context context)
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{
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headers = new ArrayAdapter<String>(context, R.layout.list_header);
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}
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public void addSection(String section, Adapter adapter)
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{
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this.headers.add(section);
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this.sections.put(section, adapter);
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}
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public void setSectionTitle(int section, String title)
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{
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String oldTitle = this.headers.getItem(section);
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// remove/add to headers array
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this.headers.remove(oldTitle);
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this.headers.insert(title, section);
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// remove/add to section map
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Adapter adapter = this.sections.get(oldTitle);
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this.sections.remove(oldTitle);
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this.sections.put(title, adapter);
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}
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public Object getItem(int position)
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{
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for (int i = 0; i < headers.getCount(); i++)
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{
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String section = headers.getItem(i);
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Adapter adapter = sections.get(section);
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// ignore empty sections
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if (adapter.getCount() > 0)
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{
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int size = adapter.getCount() + 1;
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// check if position inside this section
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if (position == 0)
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return section;
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if (position < size)
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return adapter.getItem(position - 1);
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// otherwise jump into next section
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position -= size;
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}
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}
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return null;
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}
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public int getCount()
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{
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// total together all sections, plus one for each section header (except if the section is
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// empty)
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int total = 0;
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for (Adapter adapter : this.sections.values())
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total += ((adapter.getCount() > 0) ? adapter.getCount() + 1 : 0);
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return total;
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}
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public int getViewTypeCount()
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{
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// assume that headers count as one, then total all sections
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int total = 1;
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for (Adapter adapter : this.sections.values())
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total += adapter.getViewTypeCount();
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return total;
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}
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public int getItemViewType(int position)
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{
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int type = 1;
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for (int i = 0; i < headers.getCount(); i++)
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{
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String section = headers.getItem(i);
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Adapter adapter = sections.get(section);
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// skip empty sections
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if (adapter.getCount() > 0)
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{
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int size = adapter.getCount() + 1;
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// check if position inside this section
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if (position == 0)
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return TYPE_SECTION_HEADER;
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if (position < size)
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return type + adapter.getItemViewType(position - 1);
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// otherwise jump into next section
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position -= size;
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type += adapter.getViewTypeCount();
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}
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}
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return -1;
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}
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public boolean areAllItemsSelectable()
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{
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return false;
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}
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public boolean isEnabled(int position)
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{
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return (getItemViewType(position) != TYPE_SECTION_HEADER);
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}
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@Override public View getView(int position, View convertView, ViewGroup parent)
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{
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int sectionnum = 0;
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for (int i = 0; i < headers.getCount(); i++)
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{
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String section = headers.getItem(i);
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Adapter adapter = sections.get(section);
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// skip empty sections
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if (adapter.getCount() > 0)
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{
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int size = adapter.getCount() + 1;
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// check if position inside this section
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if (position == 0)
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return headers.getView(sectionnum, convertView, parent);
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if (position < size)
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return adapter.getView(position - 1, null, parent);
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// otherwise jump into next section
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position -= size;
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}
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sectionnum++;
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}
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return null;
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}
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@Override public long getItemId(int position)
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{
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for (int i = 0; i < headers.getCount(); i++)
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{
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String section = headers.getItem(i);
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Adapter adapter = sections.get(section);
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if (adapter.getCount() > 0)
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{
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int size = adapter.getCount() + 1;
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// check if position inside this section
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if (position < size)
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return adapter.getItemId(position - 1);
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// otherwise jump into next section
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position -= size;
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}
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}
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return -1;
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}
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public String getSectionForPosition(int position)
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{
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int curPos = 0;
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for (int i = 0; i < headers.getCount(); i++)
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{
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String section = headers.getItem(i);
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Adapter adapter = sections.get(section);
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if (adapter.getCount() > 0)
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{
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int size = adapter.getCount() + 1;
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// check if position inside this section
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if (position >= curPos && position < (curPos + size))
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return section.toString();
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// otherwise jump into next section
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curPos += size;
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}
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}
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return null;
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}
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}
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