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/*
* Copyright (C) 2011 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.camera.ui;
import com.android.camera.ListPreference;
import com.android.camera.R;
import android.content.Context;
import android.util.AttributeSet;
import android.view.accessibility.AccessibilityEvent;
import android.widget.LinearLayout;
import android.widget.TextView;
/**
* A one-line camera setting could be one of three types: knob, switch or restore
* preference button. The setting includes a title for showing the preference
* title which is initialized in the SimpleAdapter. A knob also includes
* (ex: Picture size), a previous button, the current value (ex: 5MP),
* and a next button. A switch, i.e. the preference RecordLocationPreference,
* has only two values on and off which will be controlled in a switch button.
* Other setting popup window includes several InLineSettingItem items with
* different types if possible.
*/
public abstract class InLineSettingItem extends LinearLayout {
private Listener mListener;
protected ListPreference mPreference;
protected int mIndex;
// Scene mode can override the original preference value.
protected String mOverrideValue;
static public interface Listener {
public void onSettingChanged();
}
public InLineSettingItem(Context context, AttributeSet attrs) {
super(context, attrs);
}
protected void setTitle(ListPreference preference) {
((TextView) findViewById(R.id.title)).setText(preference.getTitle());
}
public void initialize(ListPreference preference) {
setTitle(preference);
if (preference == null) return;
mPreference = preference;
reloadPreference();
}
protected abstract void updateView();
protected boolean changeIndex(int index) {
if (index >= mPreference.getEntryValues().length || index < 0) return false;
mIndex = index;
mPreference.setValueIndex(mIndex);
if (mListener != null) {
mListener.onSettingChanged();
}
updateView();
sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_SELECTED);
return true;
}
// The value of the preference may have changed. Update the UI.
public void reloadPreference() {
mIndex = mPreference.findIndexOfValue(mPreference.getValue());
updateView();
}
public void setSettingChangedListener(Listener listener) {
mListener = listener;
}
public void overrideSettings(String value) {
mOverrideValue = value;
updateView();
}
}
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