Simple MVC based binding mechanism for android controls. (989709a9) · Commits · e / os / android_frameworks_base

api/current.txt

+33 −3

Original line number	Diff line number	Diff line
		@@ -22826,6 +22826,17 @@ package android.util {
		method public void set(T, V);
		}

		public class PropertyValueModel extends android.util.ValueModel {
		method public T get();
		method public H getHost();
		method public android.util.Property<H, T> getProperty();
		method public java.lang.Class<T> getType();
		method public static android.util.PropertyValueModel<H, T> of(H, android.util.Property<H, T>);
		method public static android.util.PropertyValueModel<H, T> of(H, java.lang.Class<T>, java.lang.String);
		method public static android.util.PropertyValueModel of(java.lang.Object, java.lang.String);
		method public void set(T);
		}

		public class SparseArray implements java.lang.Cloneable {
		ctor public SparseArray();
		ctor public SparseArray(int);
		@@ -22974,6 +22985,14 @@ package android.util {
		field public int type;
		}

		public abstract class ValueModel {
		ctor protected ValueModel();
		method public abstract T get();
		method public abstract java.lang.Class<T> getType();
		method public abstract void set(T);
		field public static final android.util.ValueModel EMPTY;
		}

		public class Xml {
		method public static android.util.AttributeSet asAttributeSet(org.xmlpull.v1.XmlPullParser);
		method public static android.util.Xml.Encoding findEncodingByName(java.lang.String) throws java.io.UnsupportedEncodingException;
		@@ -27393,10 +27412,12 @@ package android.widget {
		method public abstract void onSelectedDayChange(android.widget.CalendarView, int, int, int);
		}

		public class CheckBox extends android.widget.CompoundButton {
		public class CheckBox extends android.widget.CompoundButton implements android.widget.ValueEditor {
		ctor public CheckBox(android.content.Context);
		ctor public CheckBox(android.content.Context, android.util.AttributeSet);
		ctor public CheckBox(android.content.Context, android.util.AttributeSet, int);
		method public android.util.ValueModel<java.lang.Boolean> getValueModel();
		method public void setValueModel(android.util.ValueModel<java.lang.Boolean>);
		}

		public abstract interface Checkable {
		@@ -27569,14 +27590,16 @@ package android.widget {
		method public void setSize(int, int);
		}

		public class EditText extends android.widget.TextView {
		public class EditText extends android.widget.TextView implements android.widget.ValueEditor {
		ctor public EditText(android.content.Context);
		ctor public EditText(android.content.Context, android.util.AttributeSet);
		ctor public EditText(android.content.Context, android.util.AttributeSet, int);
		method public void extendSelection(int);
		method public android.util.ValueModel<java.lang.CharSequence> getValueModel();
		method public void selectAll();
		method public void setSelection(int, int);
		method public void setSelection(int);
		method public void setValueModel(android.util.ValueModel<java.lang.CharSequence>);
		}

		public abstract interface ExpandableListAdapter {
		@@ -28593,11 +28616,13 @@ package android.widget {
		method public abstract java.lang.Object[] getSections();
		}

		public class SeekBar extends android.widget.AbsSeekBar {
		public class SeekBar extends android.widget.AbsSeekBar implements android.widget.ValueEditor {
		ctor public SeekBar(android.content.Context);
		ctor public SeekBar(android.content.Context, android.util.AttributeSet);
		ctor public SeekBar(android.content.Context, android.util.AttributeSet, int);
		method public android.util.ValueModel<java.lang.Integer> getValueModel();
		method public void setOnSeekBarChangeListener(android.widget.SeekBar.OnSeekBarChangeListener);
		method public void setValueModel(android.util.ValueModel<java.lang.Integer>);
		}

		public static abstract interface SeekBar.OnSeekBarChangeListener {
		@@ -29169,6 +29194,11 @@ package android.widget {
		method public android.widget.TextView getText2();
		}

		public abstract interface ValueEditor {
		method public abstract android.util.ValueModel<T> getValueModel();
		method public abstract void setValueModel(android.util.ValueModel<T>);
		}

		public class VideoView extends android.view.SurfaceView implements android.widget.MediaController.MediaPlayerControl {
		ctor public VideoView(android.content.Context);
		ctor public VideoView(android.content.Context, android.util.AttributeSet);

core/java/android/util/PropertyValueModel.java

0 → 100755

+143 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2012 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 android.util;

		/**
		* A value model for a {@link Property property} of a host object. This class can be used for
		* both reflective and non-reflective property implementations.
		*
		* @param <H> the host type, where the host is the object that holds this property
		* @param <T> the value type
		*
		* @see Property
		* @see ValueModel
		*/
		public class PropertyValueModel<H, T> extends ValueModel<T> {
		private final H mHost;
		private final Property<H, T> mProperty;

		private PropertyValueModel(H host, Property<H, T> property) {
		mProperty = property;
		mHost = host;
		}

		/**
		* Returns the host.
		*
		* @return the host
		*/
		public H getHost() {
		return mHost;
		}

		/**
		* Returns the property.
		*
		* @return the property
		*/
		public Property<H, T> getProperty() {
		return mProperty;
		}

		@Override
		public Class<T> getType() {
		return mProperty.getType();
		}

		@Override
		public T get() {
		return mProperty.get(mHost);
		}

		@Override
		public void set(T value) {
		mProperty.set(mHost, value);
		}

		/**
		* Return an appropriate PropertyValueModel for this host and property.
		*
		* @param host the host
		* @param property the property
		* @return the value model
		*/
		public static <H, T> PropertyValueModel<H, T> of(H host, Property<H, T> property) {
		return new PropertyValueModel<H, T>(host, property);
		}

		/**
		* Return a PropertyValueModel for this {@code host} and a
		* reflective property, constructed from this {@code propertyType} and {@code propertyName}.
		*
		* @param host
		* @param propertyType the property type
		* @param propertyName the property name
		* @return a value model with this host and a reflective property with this type and name
		*
		* @see Property#of
		*/
		public static <H, T> PropertyValueModel<H, T> of(H host, Class<T> propertyType,
		String propertyName) {
		return of(host, Property.of((Class<H>) host.getClass(), propertyType, propertyName));
		}

		private static Class getNullaryMethodReturnType(Class c, String name) {
		try {
		return c.getMethod(name).getReturnType();
		} catch (NoSuchMethodException e) {
		return null;
		}
		}

		private static Class getFieldType(Class c, String name) {
		try {
		return c.getField(name).getType();
		} catch (NoSuchFieldException e) {
		return null;
		}
		}

		private static String capitalize(String name) {
		if (name.isEmpty()) {
		return name;
		}
		return Character.toUpperCase(name.charAt(0)) + name.substring(1);
		}

		/**
		* Return a PropertyValueModel for this {@code host} and and {@code propertyName}.
		*
		* @param host the host
		* @param propertyName the property name
		* @return a value model with this host and a reflective property with this name
		*/
		public static PropertyValueModel of(Object host, String propertyName) {
		Class clazz = host.getClass();
		String suffix = capitalize(propertyName);
		Class propertyType = getNullaryMethodReturnType(clazz, "get" + suffix);
		if (propertyType == null) {
		propertyType = getNullaryMethodReturnType(clazz, "is" + suffix);
		}
		if (propertyType == null) {
		propertyType = getFieldType(clazz, propertyName);
		}
		if (propertyType == null) {
		throw new NoSuchPropertyException(propertyName);
		}
		return of(host, propertyType, propertyName);
		}
		}

core/java/android/util/ValueModel.java

0 → 100755

+74 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2012 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 android.util;

		/**
		* A ValueModel is an abstraction for a 'slot' or place in memory in which a value
		* may be stored and retrieved. A common implementation of ValueModel is a regular property of
		* an object, whose value may be retrieved by calling the appropriate <em>getter</em>
		* method and set by calling the corresponding <em>setter</em> method.
		*
		* @param <T> the value type
		*
		* @see PropertyValueModel
		*/
		public abstract class ValueModel<T> {
		/**
		* The empty model should be used in place of {@code null} to indicate that a
		* model has not been set. The empty model has no value and does nothing when it is set.
		*/
		public static final ValueModel EMPTY = new ValueModel() {
		@Override
		public Class getType() {
		return Object.class;
		}

		@Override
		public Object get() {
		return null;
		}

		@Override
		public void set(Object value) {

		}
		};

		protected ValueModel() {
		}

		/**
		* Returns the type of this property.
		*
		* @return the property type
		*/
		public abstract Class<T> getType();

		/**
		* Returns the value of this property.
		*
		* @return the property value
		*/
		public abstract T get();

		/**
		* Sets the value of this property.
		*
		* @param value the new value for this property
		*/
		public abstract void set(T value);
		}
		No newline at end of file

core/java/android/widget/CheckBox.java

+22 −1

Original line number	Diff line number	Diff line
		@@ -20,6 +20,7 @@ import android.content.Context;
		import android.util.AttributeSet;
		import android.view.accessibility.AccessibilityEvent;
		import android.view.accessibility.AccessibilityNodeInfo;
		import android.util.ValueModel;


		/**
		@@ -55,7 +56,9 @@ import android.view.accessibility.AccessibilityNodeInfo;
		* {@link android.R.styleable#View View Attributes}
		* </p>
		*/
		public class CheckBox extends CompoundButton {
		public class CheckBox extends CompoundButton implements ValueEditor<Boolean> {
		private ValueModel<Boolean> mValueModel = ValueModel.EMPTY;

		public CheckBox(Context context) {
		this(context, null);
		}
		@@ -79,4 +82,22 @@ public class CheckBox extends CompoundButton {
		super.onInitializeAccessibilityNodeInfo(info);
		info.setClassName(CheckBox.class.getName());
		}

		@Override
		public ValueModel<Boolean> getValueModel() {
		return mValueModel;
		}

		@Override
		public void setValueModel(ValueModel<Boolean> valueModel) {
		mValueModel = valueModel;
		setChecked(mValueModel.get());
		}

		@Override
		public boolean performClick() {
		boolean handled = super.performClick();
		mValueModel.set(isChecked());
		return handled;
		}
		}

core/java/android/widget/EditText.java

+22 −1

Original line number	Diff line number	Diff line
		@@ -17,6 +17,7 @@
		package android.widget;

		import android.content.Context;
		import android.graphics.Rect;
		import android.text.Editable;
		import android.text.Selection;
		import android.text.Spannable;
		@@ -24,6 +25,7 @@ import android.text.TextUtils;
		import android.text.method.ArrowKeyMovementMethod;
		import android.text.method.MovementMethod;
		import android.util.AttributeSet;
		import android.util.ValueModel;
		import android.view.accessibility.AccessibilityEvent;
		import android.view.accessibility.AccessibilityNodeInfo;

		@@ -47,7 +49,9 @@ import android.view.accessibility.AccessibilityNodeInfo;
		* {@link android.R.styleable#TextView TextView Attributes},
		* {@link android.R.styleable#View View Attributes}
		*/
		public class EditText extends TextView {
		public class EditText extends TextView implements ValueEditor<CharSequence> {
		private ValueModel<CharSequence> mValueModel = ValueModel.EMPTY;

		public EditText(Context context) {
		this(context, null);
		}
		@@ -128,4 +132,21 @@ public class EditText extends TextView {
		super.onInitializeAccessibilityNodeInfo(info);
		info.setClassName(EditText.class.getName());
		}

		@Override
		public ValueModel<CharSequence> getValueModel() {
		return mValueModel;
		}

		@Override
		public void setValueModel(ValueModel<CharSequence> valueModel) {
		mValueModel = valueModel;
		setText(mValueModel.get());
		}

		@Override
		void sendAfterTextChanged(Editable text) {
		super.sendAfterTextChanged(text);
		mValueModel.set(text);
		}
		}