Unbundle with the PreferenceManager.

Change-Id: Ib415bf36147f35cbf1681cd87514124822ac48c6

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 0000000..b0c92de
--- /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 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;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.util.Xml;
+import android.view.InflateException;
+
+/**
+ * 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);
+        }
+    }
+}