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/*
* Copyright (C) 2012 The CyanogenMod Project
*
* 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 com.cyanogenmod.filemanager.adapters;
import android.content.Context;
import android.graphics.drawable.Drawable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import com.cyanogenmod.filemanager.R;
import com.cyanogenmod.filemanager.model.History;
import com.cyanogenmod.filemanager.parcelables.NavigationViewInfoParcelable;
import com.cyanogenmod.filemanager.parcelables.SearchInfoParcelable;
import com.cyanogenmod.filemanager.ui.IconHolder;
import com.cyanogenmod.filemanager.ui.ThemeManager;
import com.cyanogenmod.filemanager.ui.ThemeManager.Theme;
import java.util.List;
/**
* An implementation of {@link ArrayAdapter} for display history.
*/
public class HistoryAdapter extends ArrayAdapter<History> {
/**
* A class that conforms with the ViewHolder pattern to performance
* the list view rendering.
*/
private static class ViewHolder {
/**
* @hide
*/
public ViewHolder() {
super();
}
ImageView mIvIcon;
TextView mTvName;
TextView mTvDirectory;
TextView mTvPosition;
}
/**
* A class that holds the full data information.
*/
private static class DataHolder {
/**
* @hide
*/
public DataHolder() {
super();
}
Drawable mDwIcon;
String mName;
String mDirectory;
String mPosition;
}
private DataHolder[] mData;
private IconHolder mIconHolder;
//The resource item layout
private static final int RESOURCE_LAYOUT = R.layout.history_item;
//The resource of the item icon
private static final int RESOURCE_ITEM_ICON = R.id.history_item_icon;
//The resource of the item name
private static final int RESOURCE_ITEM_NAME = R.id.history_item_name;
//The resource of the item directory
private static final int RESOURCE_ITEM_DIRECTORY = R.id.history_item_directory;
//The resource of the item position
private static final int RESOURCE_ITEM_POSITION = R.id.history_item_position;
/**
* Constructor of <code>HistoryAdapter</code>.
*
* @param context The current context
* @param history The history reference
*/
public HistoryAdapter(Context context, List<History> history) {
super(context, RESOURCE_ITEM_NAME, history);
notifyThemeChanged(); // Reload icons
//Do cache of the data for better performance
processData(history);
}
/**
* {@inheritDoc}
*/
@Override
public void notifyDataSetChanged() {
processData(null);
super.notifyDataSetChanged();
}
/**
* Method that dispose the elements of the adapter.
*/
public void dispose() {
clear();
this.mData = null;
if (mIconHolder != null) {
mIconHolder.cleanup();
mIconHolder = null;
}
}
/**
* Method that process the data before use {@link #getView} method.
*
* @param historyData The list of histories (to better performance) or null.
*/
private void processData(List<History> historyData) {
this.mData = new DataHolder[getCount()];
int cc = (historyData == null) ? getCount() : historyData.size();
for (int i = 0; i < cc; i++) {
//History info
History history = (historyData == null) ? getItem(i) : historyData.get(i);
//Build the data holder
this.mData[i] = new HistoryAdapter.DataHolder();
if (history.getItem() instanceof NavigationViewInfoParcelable) {
this.mData[i].mDwIcon =
this.mIconHolder.getDrawable("ic_fso_folder_drawable"); //$NON-NLS-1$
} else if (history.getItem() instanceof SearchInfoParcelable) {
this.mData[i].mDwIcon =
this.mIconHolder.getDrawable("ic_history_search_drawable"); //$NON-NLS-1$
}
this.mData[i].mName = history.getItem().getTitle();
if (this.mData[i].mName == null || this.mData[i].mName.trim().length() == 0) {
// Root directory
this.mData[i].mName = getContext().getString(R.string.root_directory_name);
}
this.mData[i].mDirectory = history.getItem().getDescription();
this.mData[i].mPosition = String.format("#%d", Integer.valueOf(i + 1)); //$NON-NLS-1$
}
}
/**
* {@inheritDoc}
*/
@Override
public View getView(int position, View convertView, ViewGroup parent) {
//Check to reuse view
View v = convertView;
if (v == null) {
//Create the view holder
LayoutInflater li =
(LayoutInflater)getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = li.inflate(RESOURCE_LAYOUT, parent, false);
ViewHolder viewHolder = new HistoryAdapter.ViewHolder();
viewHolder.mIvIcon = (ImageView)v.findViewById(RESOURCE_ITEM_ICON);
viewHolder.mTvName = (TextView)v.findViewById(RESOURCE_ITEM_NAME);
viewHolder.mTvDirectory = (TextView)v.findViewById(RESOURCE_ITEM_DIRECTORY);
viewHolder.mTvPosition = (TextView)v.findViewById(RESOURCE_ITEM_POSITION);
v.setTag(viewHolder);
// Apply the current theme
Theme theme = ThemeManager.getCurrentTheme(getContext());
theme.setBackgroundDrawable(
getContext(), v, "selectors_deselected_drawable"); //$NON-NLS-1$
theme.setTextColor(
getContext(), viewHolder.mTvName, "text_color"); //$NON-NLS-1$
theme.setTextColor(
getContext(), viewHolder.mTvDirectory, "text_color"); //$NON-NLS-1$
theme.setTextColor(
getContext(), viewHolder.mTvPosition, "text_color"); //$NON-NLS-1$
}
//Retrieve data holder
final DataHolder dataHolder = this.mData[position];
//Retrieve the view holder
ViewHolder viewHolder = (ViewHolder)v.getTag();
//Set the data
viewHolder.mIvIcon.setImageDrawable(dataHolder.mDwIcon);
viewHolder.mTvName.setText(dataHolder.mName);
viewHolder.mTvDirectory.setText(dataHolder.mDirectory);
viewHolder.mTvPosition.setText(dataHolder.mPosition);
//Return the view
return v;
}
/**
* Method that should be invoked when the theme of the app was changed
*/
public void notifyThemeChanged() {
if (mIconHolder != null) {
mIconHolder.cleanup();
}
// Empty icon holder (only have folders and search icons)
this.mIconHolder = new IconHolder(getContext(), false);
}
}
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