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/*
* Copyright (C) 2014 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 org.cyanogenmod.wallpapers.photophase.widgets;
import android.content.Context;
import android.os.AsyncTask;
import android.os.AsyncTask.Status;
import android.util.AttributeSet;
import android.widget.FrameLayout;
import android.widget.ImageView;
import org.cyanogenmod.wallpapers.photophase.R;
import org.cyanogenmod.wallpapers.photophase.model.Picture;
import org.cyanogenmod.wallpapers.photophase.tasks.AsyncPictureLoaderTask;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
/**
* A view that contains the view of the picture of an abbum
*/
public class PictureItemView extends FrameLayout {
/**
* A convenient listener for receive events of the PictureItemView class
*
*/
public interface CallbacksListener {
/**
* Invoked when an Picture was selected
*
* @param Picture The Picture
*/
void onPictureSelected(Picture Picture);
/**
* Invoked when an Picture was deselected
*
* @param Picture The Picture
*/
void onPictureDeselected(Picture Picture);
}
private List<CallbacksListener> mCallbacks;
private Picture mPicture;
private AsyncPictureLoaderTask mTask;
private ImageView mIcon;
/**
* Constructor of <code>PictureItemView</code>.
*
* @param context The current context
*/
public PictureItemView(Context context) {
super(context);
init();
}
/**
* Constructor of <code>PictureItemView</code>.
*
* @param context The current context
* @param attrs The attributes of the XML tag that is inflating the view.
*/
public PictureItemView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
/**
* Constructor of <code>PictureItemView</code>.
*
* @param context The current context
* @param attrs The attributes of the XML tag that is inflating the view.
* @param defStyle The default style to apply to this view. If 0, no style
* will be applied (beyond what is included in the theme). This may
* either be an attribute resource, whose value will be retrieved
* from the current theme, or an explicit style resource.
*/
public PictureItemView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init();
}
/**
* Method that initializes the internal references
*/
private void init() {
mCallbacks = new ArrayList<PictureItemView.CallbacksListener>();
}
/**
* Method that adds the class that will be listen for events of this class
*
* @param callback The callback class
*/
public void addCallBackListener(CallbacksListener callback) {
this.mCallbacks.add(callback);
}
/**
* Method that removes the class from the current callbacks
*
* @param callback The callback class
*/
public void removeCallBackListener(CallbacksListener callback) {
this.mCallbacks.remove(callback);
}
/**
* {@inheritDoc}
*/
@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
updateView(mPicture, true);
}
/**
* {@inheritDoc}
*/
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
// Cancel pending tasks
if (mTask != null && mTask.getStatus().compareTo(Status.PENDING) == 0) {
mTask.cancel(true);
}
}
/**
* Method that returns the picture
*
* @return Picture The picture
*/
public Picture getPicture() {
return mPicture;
}
/**
* Method that sets the picture
*
* @param picture The picture
*/
public void setPicture(Picture picture) {
mPicture = picture;
}
/**
* Method that updates the view
*
* @param picture The picture data
*/
public void updateView(Picture picture, boolean refreshIcon) {
// Destroy the update drawable task
if (mTask != null && (mTask.getStatus() == AsyncTask.Status.RUNNING ||
mTask.getStatus() == AsyncTask.Status.PENDING)) {
mTask.cancel(true);
}
// Retrieve the views references
if (mIcon == null) {
mIcon = (ImageView)findViewById(R.id.picture_thumbnail);
}
// Update the views
if (picture != null) {
setPicture(picture);
setSelected(picture.isSelected());
// Do no try to cache the images (this generates a lot of memory an we want
// to have a low memory footprint)
if (refreshIcon) {
mIcon.setImageDrawable(null);
// Show as icon, the first picture
mTask = new AsyncPictureLoaderTask(getContext(), mIcon);
mTask.execute(new File(picture.getPath()));
}
}
}
}
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