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/*
* Copyright (C) 2009 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;
import android.content.Context;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.ImageView;
/**
* This class draws an icon which changes according to the mode. For example,
* The flash icon can have on, off, and auto modes. The user can use
* {@link #setMode(String)} to change the mode (and the icon).
*/
public class IconIndicator extends ImageView {
private Drawable[] mIcons;
private CharSequence[] mModes;
public IconIndicator(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
TypedArray a = context.obtainStyledAttributes(
attrs, R.styleable.IconIndicator, defStyle, 0);
Drawable icons[] = loadIcons(context.getResources(),
a.getResourceId(R.styleable.IconIndicator_icons, 0));
CharSequence modes[] =
a.getTextArray(R.styleable.IconIndicator_modes);
a.recycle();
setModesAndIcons(modes, icons);
setImageDrawable(mIcons.length > 0 ? mIcons[0] : null);
}
public IconIndicator(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
private Drawable[] loadIcons(Resources resources, int iconsId) {
TypedArray array = resources.obtainTypedArray(iconsId);
int n = array.length();
Drawable drawable[] = new Drawable[n];
for (int i = 0; i < n; ++i) {
int id = array.getResourceId(i, 0);
drawable[i] = id == 0 ? null : resources.getDrawable(id);
}
array.recycle();
return drawable;
}
private void setModesAndIcons(CharSequence[] modes, Drawable icons[]) {
if (modes.length != icons.length || icons.length == 0) {
throw new IllegalArgumentException();
}
mIcons = icons;
mModes = modes;
}
public void setMode(String mode) {
for (int i = 0, n = mModes.length; i < n; ++i) {
if (mModes[i].equals(mode)) {
setImageDrawable(mIcons[i]);
return;
}
}
throw new IllegalArgumentException("unknown mode: " + mode);
}
}
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