diff options
author | Michael Kolb <kolby@google.com> | 2013-01-29 20:51:56 +0000 |
---|---|---|
committer | Android (Google) Code Review <android-gerrit@google.com> | 2013-01-29 20:51:57 +0000 |
commit | 9a19022b495447029c81fdcd83dc1a1c86d98b25 (patch) | |
tree | de3268b090958a305529d1f34051bea03bacde46 /src/com/android/camera/PreferenceInflater.java | |
parent | 72d510612f505d4d8439dab144d5c253346aebc2 (diff) | |
parent | 8872c23e739de38d74f04a8c852ebb5199c905f6 (diff) | |
download | android_packages_apps_Snap-9a19022b495447029c81fdcd83dc1a1c86d98b25.tar.gz android_packages_apps_Snap-9a19022b495447029c81fdcd83dc1a1c86d98b25.tar.bz2 android_packages_apps_Snap-9a19022b495447029c81fdcd83dc1a1c86d98b25.zip |
Merge "Move Camera Java/Native source into Gallery2" into gb-ub-photos-bryce
Diffstat (limited to 'src/com/android/camera/PreferenceInflater.java')
-rw-r--r-- | src/com/android/camera/PreferenceInflater.java | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/src/com/android/camera/PreferenceInflater.java b/src/com/android/camera/PreferenceInflater.java new file mode 100644 index 000000000..231c9833b --- /dev/null +++ b/src/com/android/camera/PreferenceInflater.java @@ -0,0 +1,108 @@ +/* + * Copyright (C) 2010 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.util.AttributeSet; +import android.util.Xml; +import android.view.InflateException; + +import org.xmlpull.v1.XmlPullParser; +import org.xmlpull.v1.XmlPullParserException; + +import java.io.IOException; +import java.lang.reflect.Constructor; +import java.util.ArrayList; +import java.util.HashMap; + +/** + * Inflate <code>CameraPreference</code> from XML resource. + */ +public class PreferenceInflater { + private static final String PACKAGE_NAME = + PreferenceInflater.class.getPackage().getName(); + + private static final Class<?>[] CTOR_SIGNATURE = + new Class[] {Context.class, AttributeSet.class}; + private static final HashMap<String, Constructor<?>> sConstructorMap = + new HashMap<String, Constructor<?>>(); + + private Context mContext; + + public PreferenceInflater(Context context) { + mContext = context; + } + + public CameraPreference inflate(int resId) { + return inflate(mContext.getResources().getXml(resId)); + } + + private CameraPreference newPreference(String tagName, Object[] args) { + String name = PACKAGE_NAME + "." + tagName; + Constructor<?> constructor = sConstructorMap.get(name); + try { + if (constructor == null) { + // Class not found in the cache, see if it's real, and try to + // add it + Class<?> clazz = mContext.getClassLoader().loadClass(name); + constructor = clazz.getConstructor(CTOR_SIGNATURE); + sConstructorMap.put(name, constructor); + } + return (CameraPreference) constructor.newInstance(args); + } catch (NoSuchMethodException e) { + throw new InflateException("Error inflating class " + name, e); + } catch (ClassNotFoundException e) { + throw new InflateException("No such class: " + name, e); + } catch (Exception e) { + throw new InflateException("While create instance of" + name, e); + } + } + + private CameraPreference inflate(XmlPullParser parser) { + + AttributeSet attrs = Xml.asAttributeSet(parser); + ArrayList<CameraPreference> list = new ArrayList<CameraPreference>(); + Object args[] = new Object[]{mContext, attrs}; + + try { + for (int type = parser.next(); + type != XmlPullParser.END_DOCUMENT; type = parser.next()) { + if (type != XmlPullParser.START_TAG) continue; + CameraPreference pref = newPreference(parser.getName(), args); + + int depth = parser.getDepth(); + if (depth > list.size()) { + list.add(pref); + } else { + list.set(depth - 1, pref); + } + if (depth > 1) { + ((PreferenceGroup) list.get(depth - 2)).addChild(pref); + } + } + + if (list.size() == 0) { + throw new InflateException("No root element found"); + } + return list.get(0); + } catch (XmlPullParserException e) { + throw new InflateException(e); + } catch (IOException e) { + throw new InflateException(parser.getPositionDescription(), e); + } + } +} |