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/*
* Copyright (C) 2018 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.internal.globalactions;
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import com.android.internal.R;
/**
* A toggle action knows whether it is on or off, and displays an icon and status message
* accordingly.
*/
public abstract class ToggleAction implements Action {
private static final String TAG = "ToggleAction";
public enum State {
Off(false),
TurningOn(true),
TurningOff(true),
On(false);
private final boolean inTransition;
State(boolean intermediate) {
inTransition = intermediate;
}
public boolean inTransition() {
return inTransition;
}
}
protected State mState = State.Off;
// prefs
protected int mEnabledIconResId;
protected int mDisabledIconResid;
protected int mMessageResId;
protected int mEnabledStatusMessageResId;
protected int mDisabledStatusMessageResId;
/**
* @param enabledIconResId The icon for when this action is on.
* @param disabledIconResid The icon for when this action is off.
* @param message The general information message, e.g 'Silent Mode'
* @param enabledStatusMessageResId The on status message, e.g 'sound disabled'
* @param disabledStatusMessageResId The off status message, e.g. 'sound enabled'
*/
public ToggleAction(int enabledIconResId,
int disabledIconResid,
int message,
int enabledStatusMessageResId,
int disabledStatusMessageResId) {
mEnabledIconResId = enabledIconResId;
mDisabledIconResid = disabledIconResid;
mMessageResId = message;
mEnabledStatusMessageResId = enabledStatusMessageResId;
mDisabledStatusMessageResId = disabledStatusMessageResId;
}
/** Override to make changes to resource IDs just before creating the View. */
void willCreate() {
}
@Override
public CharSequence getLabelForAccessibility(Context context) {
return context.getString(mMessageResId);
}
@Override
public View create(Context context, View convertView, ViewGroup parent,
LayoutInflater inflater) {
willCreate();
View v = inflater.inflate(R.layout.global_actions_item, parent, false);
ImageView icon = v.findViewById(R.id.icon);
TextView messageView = v.findViewById(R.id.message);
TextView statusView = v.findViewById(R.id.status);
final boolean enabled = isEnabled();
if (messageView != null) {
messageView.setText(mMessageResId);
messageView.setEnabled(enabled);
}
boolean on = ((mState == State.On) || (mState == State.TurningOn));
if (icon != null) {
icon.setImageDrawable(context.getDrawable(
(on ? mEnabledIconResId : mDisabledIconResid)));
icon.setEnabled(enabled);
}
if (statusView != null) {
statusView.setText(on ? mEnabledStatusMessageResId : mDisabledStatusMessageResId);
statusView.setVisibility(View.VISIBLE);
statusView.setEnabled(enabled);
}
v.setEnabled(enabled);
return v;
}
@Override
public final void onPress() {
if (mState.inTransition()) {
Log.w(TAG, "shouldn't be able to toggle when in transition");
return;
}
final boolean nowOn = !(mState == State.On);
onToggle(nowOn);
changeStateFromPress(nowOn);
}
@Override
public boolean isEnabled() {
return !mState.inTransition();
}
/**
* Implementations may override this if their state can be in on of the intermediate
* states until some notification is received (e.g airplane mode is 'turning off' until
* we know the wireless connections are back online
* @param buttonOn Whether the button was turned on or off
*/
protected void changeStateFromPress(boolean buttonOn) {
mState = buttonOn ? State.On : State.Off;
}
public abstract void onToggle(boolean on);
public void updateState(State state) {
mState = state;
}
}
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