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/*
* Copyright (C) 2019 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.accessibility;
import android.content.Context;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.MotionEvent;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.Switch;
import androidx.preference.Preference;
import androidx.preference.PreferenceViewHolder;
import com.android.settings.R;
/**
* Preference that can enable accessibility shortcut and let users choose which shortcut type they
* prefer to use.
*/
public class ShortcutPreference extends Preference {
/**
* Interface definition for a callback to be invoked when the toggle or settings has been
* clicked.
*/
public interface OnClickCallback {
/**
* Called when the settings view has been clicked.
*
* @param preference The clicked preference
*/
void onSettingsClicked(ShortcutPreference preference);
/**
* Called when the toggle in ShortcutPreference has been clicked.
*
* @param preference The clicked preference
*/
void onToggleClicked(ShortcutPreference preference);
}
private OnClickCallback mClickCallback = null;
private boolean mChecked = false;
private boolean mSettingsEditable = true;
ShortcutPreference(Context context, AttributeSet attrs) {
super(context, attrs);
setLayoutResource(R.layout.accessibility_shortcut_secondary_action);
setWidgetLayoutResource(R.layout.preference_widget_master_switch);
setIconSpaceReserved(true);
}
@Override
public void onBindViewHolder(PreferenceViewHolder holder) {
super.onBindViewHolder(holder);
final TypedValue outValue = new TypedValue();
getContext().getTheme().resolveAttribute(android.R.attr.selectableItemBackground,
outValue, true);
final LinearLayout mainFrame = holder.itemView.findViewById(R.id.main_frame);
if (mainFrame != null) {
mainFrame.setOnClickListener(view -> callOnSettingsClicked());
mainFrame.setClickable(mSettingsEditable);
mainFrame.setFocusable(mSettingsEditable);
mainFrame.setBackgroundResource(
mSettingsEditable ? outValue.resourceId : /* Remove background */ 0);
}
Switch switchWidget = holder.itemView.findViewById(R.id.switchWidget);
if (switchWidget != null) {
// Consumes move events to ignore drag actions.
switchWidget.setOnTouchListener((v, event) -> {
return event.getActionMasked() == MotionEvent.ACTION_MOVE;
});
switchWidget.setContentDescription(
getContext().getText(R.string.accessibility_shortcut_settings));
switchWidget.setChecked(mChecked);
switchWidget.setOnClickListener(view -> callOnToggleClicked());
switchWidget.setClickable(mSettingsEditable);
switchWidget.setFocusable(mSettingsEditable);
switchWidget.setBackgroundResource(
mSettingsEditable ? outValue.resourceId : /* Remove background */ 0);
}
final View divider = holder.itemView.findViewById(R.id.divider);
if (divider != null) {
divider.setVisibility(mSettingsEditable ? View.VISIBLE : View.GONE);
}
holder.itemView.setOnClickListener(view -> callOnToggleClicked());
holder.itemView.setClickable(!mSettingsEditable);
holder.itemView.setFocusable(!mSettingsEditable);
}
/**
* Sets the shortcut toggle according to checked value.
*
* @param checked the state value of shortcut toggle
*/
public void setChecked(boolean checked) {
if (mChecked != checked) {
mChecked = checked;
notifyChanged();
}
}
/**
* Gets the checked value of shortcut toggle.
*
* @return the checked value of shortcut toggle
*/
public boolean isChecked() {
return mChecked;
}
/**
* Sets the editable state of Settings view. If the view cannot edited, it makes the settings
* and toggle be not touchable. The main ui handles touch event directly by {@link #onClick}.
*/
public void setSettingsEditable(boolean enabled) {
if (mSettingsEditable != enabled) {
mSettingsEditable = enabled;
notifyChanged();
}
}
public boolean isSettingsEditable() {
return mSettingsEditable;
}
/**
* Sets the callback to be invoked when this preference is clicked by the user.
*
* @param callback the callback to be invoked
*/
public void setOnClickCallback(OnClickCallback callback) {
mClickCallback = callback;
}
private void callOnSettingsClicked() {
if (mClickCallback != null) {
mClickCallback.onSettingsClicked(this);
}
}
private void callOnToggleClicked() {
setChecked(!mChecked);
if (mClickCallback != null) {
mClickCallback.onToggleClicked(this);
}
}
}
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