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Copyright (c) 2014, Delta Controls Inc. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are...
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/* Copyright (c) 2014, Delta Controls Inc. All rights reserved.//from w w w . ja v a 2s.c om Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package com.deltacontrols.eventviewer; import java.util.ArrayList; import java.util.List; import org.json.JSONObject; import android.annotation.SuppressLint; import android.app.Activity; import android.content.Context; import android.content.res.Resources; import android.graphics.Typeface; import android.graphics.drawable.Drawable; import android.graphics.drawable.GradientDrawable; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.widget.Filter; import android.widget.Filterable; import android.widget.ImageView; import android.widget.RelativeLayout; import android.widget.TextView; import android.widget.Toast; import com.deltacontrols.eweb.support.models.iEvent; /** * EventItemAdapter Adapter for the filterable list of event items */ public class EventItemAdapter extends ArrayAdapter<iEvent> implements Filterable { private Context mContext; private int mLayoutResourceId; private ArrayList<iEvent> mFullList; // Full list of all events; used so we can easily revert filtered list. private ArrayList<iEvent> mFilteredList; // Currently filtered list; subset of mFullList private EventItemFilter mFilter; // Filter object; contains values for all filters private Drawable mAckIcon; // Reference to the ack flag icon public EventItemAdapter(Context context, int layoutResourceId, ArrayList<iEvent> data) { super(context, layoutResourceId, data); this.mLayoutResourceId = layoutResourceId; this.mContext = context; this.mFilteredList = data; // Observable data. // Create copy of the original data; since we are changing our // observable data set (filteredList, we need to store the original). this.mFullList = new ArrayList<iEvent>(); this.mFullList.addAll(this.mFilteredList); mAckIcon = context.getResources().getDrawable(R.drawable.ic_state_ack_req); } /** * Updates the fullList with a new data set and then notifies itself of the change. * * @param data New list of data to show */ public void updateData(ArrayList<iEvent> data) { this.mFullList.clear(); this.mFullList.addAll(data); this.mFilteredList.clear(); this.mFilteredList.addAll(data); this.notifyDataSetChanged(); } /** * @SuppressWarnings("deprecation") Remove when we are supporting API 16+ (setBackgroundDrawable currently allowing us to set background on < 16). */ @SuppressWarnings("deprecation") @Override public View getView(int position, View row, ViewGroup parent) { EventItemHolder holder = null; Resources res = getContext().getResources(); if (row == null) { LayoutInflater inflater = ((Activity) mContext).getLayoutInflater(); row = inflater.inflate(mLayoutResourceId, parent, false); holder = new EventItemHolder(); holder.eventName = (TextView) row.findViewById(R.id.eventName); holder.inputName = (TextView) row.findViewById(R.id.inputName); holder.eventTimestamp = (TextView) row.findViewById(R.id.eventTimestamp); holder.eventMessage = (TextView) row.findViewById(R.id.eventMessage); holder.categoryColorLayout = (RelativeLayout) row.findViewById(R.id.categoryColorLayout); holder.categoryIcon = (ImageView) row.findViewById(R.id.toStateIcon); holder.ackIcon = (ImageView) row.findViewById(R.id.ackStateIcon); row.setTag(holder); } else { holder = (EventItemHolder) row.getTag(); } // Use event info to load row holder iEvent event = getItem(position); holder.eventName.setText(event.getEventName()); holder.inputName.setText(event.getInputName()); holder.eventTimestamp.setText(event.getEventTimestamp()); holder.eventMessage.setText(event.getMessage()); // Cannot set style programatically, so set "read/unread" look and feel here. if (event.hasBeenViewed) { row.setBackgroundDrawable(res.getDrawable(R.drawable.selector_summary_list_item_2)); holder.eventName.setTypeface(null, Typeface.NORMAL); holder.inputName.setTypeface(null, Typeface.ITALIC); holder.eventTimestamp.setTypeface(null, Typeface.NORMAL); holder.eventMessage.setTypeface(null, Typeface.NORMAL); } else { row.setBackgroundDrawable(res.getDrawable(R.drawable.selector_summary_list_item_1)); holder.eventName.setTypeface(null, Typeface.BOLD); holder.inputName.setTypeface(null, Typeface.BOLD_ITALIC); holder.eventTimestamp.setTypeface(null, Typeface.BOLD); holder.eventMessage.setTypeface(null, Typeface.BOLD); } // Change background DRAWABLE colour so that we preserve any other styling (ie. corner radius) GradientDrawable categoryColor = (GradientDrawable) holder.categoryColorLayout.getBackground(); categoryColor.setColor(event.getCategoryColor(res.getColor(R.color.defaultCategoryColor))); // Update icons holder.categoryIcon.setImageResource(App.getToStateIcon(event)); holder.ackIcon.setImageDrawable(event.ackRequired() ? mAckIcon : null); return row; } /** * List item view "holder"; contains references to all data outlets for each list item. */ static class EventItemHolder { TextView inputName; TextView eventName; TextView eventTimestamp; TextView eventMessage; RelativeLayout categoryColorLayout; ImageView categoryIcon; ImageView ackIcon; } // -------------------------------------------------------------------------------- // Implements Filter // -------------------------------------------------------------------------------- /** * FilterBy is a collection of filter options; because EventItemFilter may only perform filtering on a string, we allow * the callee to pass in a JSON string representing a FilterBy object which may * then be used to provide the filtering options. */ private class FilterBy { String groupName; Boolean acked; Boolean active; String text; Integer priorityLow; Integer priorityHigh; public FilterBy() { setDefaults(); } private void setDefaults() { groupName = null; acked = null; active = null; text = null; priorityLow = null; priorityHigh = null; } /** * SuppressLint("DefaultLocale") added until we come up with a good way to indicate global locale. */ @SuppressLint("DefaultLocale") public FilterBy(JSONObject json) { try { groupName = json.has("groupName") ? json.getString("groupName") : null; acked = json.has("acked") ? json.getBoolean("acked") : null; active = json.has("active") ? json.getBoolean("active") : null; text = json.has("text") ? json.getString("text").toLowerCase() : null; // Note, forced lower case priorityLow = json.has("priorityLow") ? json.getInt("priorityLow") : null; priorityHigh = json.has("priorityHigh") ? json.getInt("priorityHigh") : null; } catch (Exception e) { Context ctx = App.getContext(); Toast.makeText(ctx, ctx.getResources().getString(R.string.could_not_parse_filter), Toast.LENGTH_SHORT).show(); setDefaults(); } } public boolean hasConstraints() { return !((groupName == null) && (acked == null) && (active == null) && (text == null) && (priorityLow == null) && (priorityHigh == null)); } } /** * EventItemFilter Provides custom filtering for the adapter Allows us to apply multiple filters on the */ private class EventItemFilter extends Filter { /** * Filter the list using the filter options given in the constraint JSON string. * * @param constraint JSON String representing a {@link FilterBy} object. */ @SuppressLint("DefaultLocale") @Override protected FilterResults performFiltering(CharSequence constraint) { FilterResults results = new FilterResults(); FilterBy filters; try { JSONObject json = new JSONObject(constraint.toString()); filters = new FilterBy(json); } catch (Exception e) { filters = new FilterBy(); // No constraints Context ctx = App.getContext(); Toast.makeText(ctx, ctx.getResources().getString(R.string.could_not_parse_filter), Toast.LENGTH_SHORT).show(); } // We implement here the filter logic if (filters.hasConstraints()) { List<iEvent> resultList = new ArrayList<iEvent>(); for (iEvent item : mFullList) { // Check matches alarm group name boolean matchesGroupName = (filters.groupName == null) || item.getAlarmGroupName().equals(filters.groupName); // Check event name boolean matchesEventName = true; if (item.getEventName() == null) { matchesEventName = (filters.text == null); // Only list no name events if the name filter is null } else { // Else, event matches if we have no filter, or if the event name contains the filter string matchesEventName = (filters.text == null) || item.getEventName().toLowerCase().contains(filters.text); } // Check monitored input name boolean matchesObjectName = true; if (item.getInputName() == null) { matchesObjectName = (filters.text == null); // Only list no name events if the name filter is null } else { // Else, event matches if we have no filter, or if the event name contains the filter string matchesObjectName = (filters.text == null) || item.getInputName().toLowerCase().contains(filters.text); } // Check event message boolean matchesMessageMessage = true; if (item.getMessage() == null) { matchesMessageMessage = (filters.text == null); // Only list no name events if the name filter is null } else { // Else, event matches if we have no filter, or if the event name contains the filter string matchesMessageMessage = (filters.text == null) || item.getMessage().toLowerCase().contains(filters.text); } // Final decision; must match ALL cases to be shown (ie. filters are ADDITIVE to each other) if (matchesGroupName && (matchesEventName || matchesObjectName || matchesMessageMessage)) { // name could be either event (OR) object resultList.add(item); } } results.values = resultList; results.count = resultList.size(); } else { // No constraints' we return the full list results.values = mFullList; results.count = mFullList.size(); } return results; } @SuppressWarnings("unchecked") @Override protected void publishResults(CharSequence constraint, FilterResults results) { // Clear and then add all values to force the listAdapter to observe // the change; simply setting and then calling notify does not work. mFilteredList.clear(); mFilteredList.addAll((ArrayList<iEvent>) results.values); notifyDataSetChanged(); } } @Override public Filter getFilter() { if (mFilter == null) mFilter = new EventItemFilter(); return mFilter; } }