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@ -6,35 +6,62 @@ package com.todoroo.astrid.adapter;
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import java.util.ArrayList;
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import android.app.Activity;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.graphics.Color;
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import android.os.Parcelable;
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import android.util.DisplayMetrics;
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import android.view.Gravity;
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import android.util.Log;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import android.widget.AbsListView;
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import android.widget.BaseExpandableListAdapter;
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import android.widget.FrameLayout;
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import android.widget.ExpandableListView;
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import android.widget.ImageView;
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import android.widget.LinearLayout;
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import android.widget.TextView;
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import android.widget.ImageView.ScaleType;
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import com.timsu.astrid.R;
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import com.todoroo.astrid.api.AstridApiConstants;
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import com.todoroo.astrid.api.FilterCategory;
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import com.todoroo.astrid.api.FilterListHeader;
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import com.todoroo.astrid.api.FilterListItem;
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public class FilterAdapter extends BaseExpandableListAdapter {
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private final ArrayList<FilterListItem> items;
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// --- style constants
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public int filterStyle = R.style.TextAppearance_FLA_Filter;
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public int categoryStyle = R.style.TextAppearance_FLA_Category;
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public int headerStyle = R.style.TextAppearance_FLA_Header;
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// --- instance variables
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protected final Activity activity;
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protected final ExpandableListView listView;
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private final ArrayList<FilterListItem> items;
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private final DisplayMetrics metrics = new DisplayMetrics();
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private final FilterReceiver filterReceiver = new FilterReceiver();
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private final int layout;
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private final LayoutInflater inflater;
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public FilterAdapter(Activity activity) {
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public FilterAdapter(Activity activity, ExpandableListView listView,
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int rowLayout) {
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super();
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this.activity = activity;
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this.items = new ArrayList<FilterListItem>();
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this.listView = listView;
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this.layout = rowLayout;
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inflater = (LayoutInflater) activity.getSystemService(
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Context.LAYOUT_INFLATER_SERVICE);
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activity.getWindowManager().getDefaultDisplay().getMetrics(metrics);
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listView.setGroupIndicator(
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activity.getResources().getDrawable(R.drawable.expander_group));
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getLists();
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}
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public boolean hasStableIds() {
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@ -49,6 +76,35 @@ public class FilterAdapter extends BaseExpandableListAdapter {
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items.clear();
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}
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/**
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* Create or reuse a view
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* @param convertView
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* @param parent
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* @return
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*/
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protected View newView(View convertView, ViewGroup parent) {
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if(convertView == null) {
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convertView = inflater.inflate(layout, parent, false);
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ViewHolder viewHolder = new ViewHolder();
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viewHolder.view = convertView;
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viewHolder.expander = (ImageView)convertView.findViewById(R.id.expander);
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viewHolder.icon = (ImageView)convertView.findViewById(R.id.icon);
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viewHolder.name = (TextView)convertView.findViewById(R.id.name);
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viewHolder.selected = (ImageView)convertView.findViewById(R.id.selected);
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convertView.setTag(viewHolder);
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}
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return convertView;
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}
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private class ViewHolder {
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public FilterListItem item;
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public ImageView expander;
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public ImageView icon;
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public TextView name;
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public ImageView selected;
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public View view;
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}
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/* ======================================================================
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* ========================================================== child nodes
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* ====================================================================== */
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@ -74,9 +130,13 @@ public class FilterAdapter extends BaseExpandableListAdapter {
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public View getChildView(int groupPosition, int childPosition, boolean isLastChild,
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View convertView, ViewGroup parent) {
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FilterListItem item = (FilterListItem)getChild(groupPosition, childPosition);
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View textView = getStandardView(item, true);
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return textView;
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convertView = newView(convertView, parent);
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ViewHolder viewHolder = (ViewHolder) convertView.getTag();
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viewHolder.item = (FilterListItem)getChild(groupPosition, childPosition);
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populateView(viewHolder, true, false);
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return convertView;
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}
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/* ======================================================================
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@ -97,8 +157,11 @@ public class FilterAdapter extends BaseExpandableListAdapter {
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public View getGroupView(int groupPosition, boolean isExpanded, View convertView,
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ViewGroup parent) {
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View view = getView((FilterListItem)getGroup(groupPosition), false, isExpanded);
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return view;
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convertView = newView(convertView, parent);
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ViewHolder viewHolder = (ViewHolder) convertView.getTag();
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viewHolder.item = (FilterListItem) getGroup(groupPosition);
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populateView(viewHolder, false, isExpanded);
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return convertView;
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}
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public boolean isChildSelectable(int groupPosition, int childPosition) {
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@ -106,110 +169,156 @@ public class FilterAdapter extends BaseExpandableListAdapter {
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}
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/* ======================================================================
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* ================================================================ views
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* ============================================================ selection
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* ====================================================================== */
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public View getView(FilterListItem item, boolean isChild, boolean isExpanded) {
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if(item instanceof FilterListHeader)
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return getHeaderView((FilterListHeader)item, isChild);
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else if(item instanceof FilterCategory)
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return getCategoryView((FilterCategory)item, isExpanded);
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else
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return getStandardView(item, isChild);
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}
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public View getCategoryView(FilterCategory filter, boolean isExpanded) {
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AbsListView.LayoutParams lp = new AbsListView.LayoutParams(
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ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
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private FilterListItem selection = null;
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FrameLayout layout = new FrameLayout(activity);
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layout.setLayoutParams(lp);
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ImageView image = new ImageView(activity);
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if(isExpanded)
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image.setImageResource(R.drawable.expander_ic_maximized);
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/**
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* Sets the selected item to this one
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* @param picked
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*/
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public void setSelection(FilterListItem picked) {
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if(picked == selection)
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selection = null;
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else
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image.setImageResource(R.drawable.expander_ic_minimized);
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FrameLayout.LayoutParams expansionImageLayout = new FrameLayout.LayoutParams(
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32, 32);
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expansionImageLayout.gravity = Gravity.CENTER_VERTICAL;
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image.setPadding(5, 0, 5, 0);
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image.setLayoutParams(expansionImageLayout);
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image.setScaleType(ScaleType.FIT_CENTER);
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layout.addView(image);
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TextView textView = new TextView(activity);
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textView.setGravity(Gravity.CENTER_VERTICAL);
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textView.setText(filter.listingTitle);
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textView.setTextAppearance(activity, R.style.TextAppearance_FLA_Category);
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selection = picked;
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int scroll = listView.getScrollY();
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notifyDataSetInvalidated();
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listView.scrollTo(0, scroll);
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}
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View view = augmentView(textView, filter);
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view.setPadding((int) (33 * metrics.density), 5, 0, 5);
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FrameLayout.LayoutParams rowLayout = new FrameLayout.LayoutParams(
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ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
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rowLayout.gravity = Gravity.CENTER_VERTICAL;
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view.setLayoutParams(rowLayout);
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/**
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* Gets the currently selected item
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* @return null if no item is to be selected
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*/
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public FilterListItem getSelection() {
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return selection;
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}
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layout.addView(view);
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/* ======================================================================
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* ============================================================= receiver
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* ====================================================================== */
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return layout;
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/**
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* Receiver which receives intents to add items to the filter list
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*
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* @author Tim Su <tim@todoroo.com>
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*
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*/
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public class FilterReceiver extends BroadcastReceiver {
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@Override
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public void onReceive(Context context, Intent intent) {
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try {
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final Parcelable[] filters = intent.getExtras().
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getParcelableArray(AstridApiConstants.EXTRAS_RESPONSE);
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for (Parcelable item : filters) {
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add((FilterListItem)item);
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onReceiveFilter((FilterListItem)item);
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}
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notifyDataSetChanged();
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activity.runOnUiThread(new Runnable() {
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@Override
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public void run() {
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expandList(filters);
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}
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});
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} catch (Exception e) {
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Log.e("receive-filter-" + //$NON-NLS-1$
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intent.getStringExtra(AstridApiConstants.EXTRAS_ADDON),
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e.toString(), e);
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}
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}
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}
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/**
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* Decorate textview and add an image if the filter requests it
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* @param textView
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* @param filter
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* @return final view ready to be added
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* Expand the first category filter in this group
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* @param filters
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*/
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private View augmentView(TextView textView, FilterListItem filter) {
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if(filter.listingIcon != null) {
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LinearLayout layout = new LinearLayout(activity);
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layout.setGravity(textView.getGravity());
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layout.setOrientation(LinearLayout.HORIZONTAL);
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ImageView icon = new ImageView(activity);
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icon.setImageBitmap(filter.listingIcon);
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icon.setScaleType(ScaleType.CENTER);
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icon.setPadding(0, 0, 15, 0);
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layout.addView(icon);
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layout.addView(textView);
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return layout;
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protected void expandList(Parcelable[] filters) {
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for(Parcelable filter : filters) {
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if(filter instanceof FilterCategory) {
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for(int i = 0; i < getGroupCount(); i++)
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if(getGroup(i) == filter) {
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listView.expandGroup(i);
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return;
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}
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}
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}
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return textView;
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}
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public View getStandardView(FilterListItem filter, boolean isChild) {
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AbsListView.LayoutParams lp = new AbsListView.LayoutParams(
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ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
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/**
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* Broadcast a request for lists. The request is sent to every
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* application registered to listen for this broadcast. Each application
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* can then add lists to this activity
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*/
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protected void getLists() {
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Intent broadcastIntent = new Intent(AstridApiConstants.BROADCAST_REQUEST_FILTERS);
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activity.sendOrderedBroadcast(broadcastIntent, AstridApiConstants.PERMISSION_READ);
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}
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TextView textView = new TextView(activity);
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textView.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);
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textView.setText(filter.listingTitle);
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textView.setTextAppearance(activity, R.style.TextAppearance_FLA_Filter);
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/**
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* Call this method from your activity's onResume() method
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*/
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public void registerRecevier() {
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activity.registerReceiver(filterReceiver,
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new IntentFilter(AstridApiConstants.BROADCAST_SEND_FILTERS));
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}
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View view = augmentView(textView, filter);
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view.setBackgroundDrawable(null);
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view.setLayoutParams(lp);
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view.setPadding((int) ((isChild ? 27 : 7) * metrics.density), 8, 0, 8);
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/**
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* Call this method from your activity's onResume() method
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*/
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public void unregisterRecevier() {
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activity.unregisterReceiver(filterReceiver);
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}
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return view;
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/**
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* Called when an item comes through. Override if you like
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* @param item
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*/
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public void onReceiveFilter(FilterListItem item) {
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// do nothing
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}
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public View getHeaderView(FilterListHeader header, boolean isChild) {
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AbsListView.LayoutParams lp = new AbsListView.LayoutParams(
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ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
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/* ======================================================================
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* ================================================================ views
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* ====================================================================== */
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TextView textView = new TextView(activity);
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textView.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);
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textView.setTextAppearance(activity, R.style.TextAppearance_FLA_Header);
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textView.setText(header.listingTitle);
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public void populateView(ViewHolder viewHolder, boolean isChild, boolean isExpanded) {
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FilterListItem filter = viewHolder.item;
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viewHolder.view.setBackgroundResource(0);
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viewHolder.expander.setVisibility(View.GONE);
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if(viewHolder.item instanceof FilterListHeader) {
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viewHolder.name.setTextAppearance(activity, headerStyle);
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viewHolder.view.setBackgroundResource(R.drawable.edit_titlebar);
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viewHolder.view.setPadding((int) ((isChild ? 33 : 7) * metrics.density), 5, 0, 5);
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} else if(viewHolder.item instanceof FilterCategory) {
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viewHolder.expander.setVisibility(View.VISIBLE);
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if(isExpanded)
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viewHolder.expander.setImageResource(R.drawable.expander_ic_maximized);
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else
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viewHolder.expander.setImageResource(R.drawable.expander_ic_minimized);
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viewHolder.name.setTextAppearance(activity, categoryStyle);
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viewHolder.view.setPadding((int)(7 * metrics.density), 8, 0, 8);
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} else {
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viewHolder.name.setTextAppearance(activity, filterStyle);
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viewHolder.view.setPadding((int) ((isChild ? 27 : 7) * metrics.density), 8, 0, 8);
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}
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viewHolder.icon.setVisibility(filter.listingIcon != null ? View.VISIBLE : View.GONE);
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viewHolder.icon.setImageBitmap(filter.listingIcon);
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View view = augmentView(textView, header);
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view.setBackgroundResource(R.drawable.edit_titlebar);
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view.setLayoutParams(lp);
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view.setPadding((int) ((isChild ? 33 : 7) * metrics.density), 5, 0, 5);
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viewHolder.name.setText(filter.listingTitle);
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return view;
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|
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// selection
|
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|
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if(selection == viewHolder.item) {
|
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|
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viewHolder.selected.setVisibility(View.VISIBLE);
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|
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viewHolder.view.setBackgroundColor(Color.rgb(128, 230, 0));
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} else
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viewHolder.selected.setVisibility(View.GONE);
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}
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}
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Tim Su
14 years ago
