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/*
* Copyright (C) 2008 The Android Open Source 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.android.settings.bluetooth;
import com.android.settings.R;
import android.content.Context;
import android.preference.Preference;
import android.util.TypedValue;
import android.view.View;
import android.widget.ImageView;
/**
* BluetoothDevicePreference is the preference type used to display each remote
* Bluetooth device in the Bluetooth Settings screen.
*/
public class BluetoothDevicePreference extends Preference implements CachedBluetoothDevice.Callback {
private static final String TAG = "BluetoothDevicePreference";
private static int sDimAlpha = Integer.MIN_VALUE;
private CachedBluetoothDevice mCachedDevice;
/**
* Cached local copy of whether the device is busy. This is only updated
* from {@link #onDeviceAttributesChanged(CachedBluetoothDevice)}.
*/
private boolean mIsBusy;
public BluetoothDevicePreference(Context context, CachedBluetoothDevice cachedDevice) {
super(context);
if (sDimAlpha == Integer.MIN_VALUE) {
TypedValue outValue = new TypedValue();
context.getTheme().resolveAttribute(android.R.attr.disabledAlpha, outValue, true);
sDimAlpha = (int) (outValue.getFloat() * 255);
}
mCachedDevice = cachedDevice;
setLayoutResource(R.layout.preference_bluetooth);
cachedDevice.registerCallback(this);
onDeviceAttributesChanged(cachedDevice);
}
public CachedBluetoothDevice getCachedDevice() {
return mCachedDevice;
}
@Override
protected void onPrepareForRemoval() {
super.onPrepareForRemoval();
mCachedDevice.unregisterCallback(this);
}
public void onDeviceAttributesChanged(CachedBluetoothDevice cachedDevice) {
/*
* The preference framework takes care of making sure the value has
* changed before proceeding.
*/
setTitle(mCachedDevice.getName());
/*
* TODO: Showed "Paired" even though it was "Connected". This may be
* related to BluetoothHeadset not bound to the actual
* BluetoothHeadsetService when we got here.
*/
setSummary(mCachedDevice.getSummary());
// Used to gray out the item
mIsBusy = mCachedDevice.isBusy();
// Data has changed
notifyChanged();
// This could affect ordering, so notify that also
notifyHierarchyChanged();
}
@Override
public boolean isEnabled() {
// Temp fix until we have 2053751 fixed in the framework
setEnabled(true);
return super.isEnabled() && !mIsBusy;
}
@Override
protected void onBindView(View view) {
// Disable this view if the bluetooth enable/disable preference view is off
setDependency("bt_checkbox");
super.onBindView(view);
ImageView btClass = (ImageView) view.findViewById(R.id.btClass);
btClass.setImageResource(mCachedDevice.getBtClassDrawable());
btClass.setAlpha(isEnabled() ? 255 : sDimAlpha);
}
@Override
public int compareTo(Preference another) {
if (!(another instanceof BluetoothDevicePreference)) {
// Put other preference types above us
return 1;
}
return mCachedDevice.compareTo(((BluetoothDevicePreference) another).mCachedDevice);
}
}
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