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Project RoboMVVM(https://github.com/debdattabasu/RoboMVVM) Copyright (c) 2014, Debdatta Basu All rights reserved. Redistribution and use in source and binary forms, with or without modification, are ...
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/** * @project RoboMVVM/* w w w .j ava2 s. co m*/ * @project RoboMVVM(https://github.com/debdattabasu/RoboMVVM) * @author Debdatta Basu * * @license 3-clause BSD license(http://opensource.org/licenses/BSD-3-Clause). * Copyright (c) 2014, Debdatta Basu. All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, are permitted provided that * the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this list of * conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, this list of * conditions and the following disclaimer in the documentation and/or other materials * provided with the distribution. * * 3. Neither the name of the copyright holder nor the names of its contributors may be used * to endorse or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ package org.dbasu.robomvvm.componentmodel; import android.view.MenuItem; import android.view.View; import android.widget.AdapterView; import android.widget.CompoundButton; import android.widget.EditText; import android.widget.ImageView; import android.widget.ListView; import android.widget.ProgressBar; import android.widget.RatingBar; import android.widget.SeekBar; import android.widget.TextView; import com.google.common.base.Preconditions; import org.dbasu.robomvvm.componentadapter.adapterview.AdapterViewAdapter; import org.dbasu.robomvvm.componentadapter.compoundbutton.CompoundButtonViewAdapter; import org.dbasu.robomvvm.componentadapter.edittext.EditTextViewAdapter; import org.dbasu.robomvvm.componentadapter.imageview.ImageViewAdapter; import org.dbasu.robomvvm.componentadapter.listview.ListViewAdapter; import org.dbasu.robomvvm.componentadapter.menuitem.MenuItemAdapter; import org.dbasu.robomvvm.componentadapter.progressbar.ProgressBarViewAdapter; import org.dbasu.robomvvm.componentadapter.ratingbar.RatingBarViewAdapter; import org.dbasu.robomvvm.componentadapter.seekbar.SeekBarViewAdapter; import org.dbasu.robomvvm.componentadapter.textview.TextViewAdapter; import org.dbasu.robomvvm.componentadapter.view.ViewAdapter; import org.dbasu.robomvvm.util.ObjectTagger; import java.util.ArrayList; import java.util.Arrays; import java.util.HashMap; import java.util.List; import java.util.Map; /** * An adapter to make components from arbitrary objects. Make associations between object classes and component adapters * classes using {@link ComponentAdapter.Associations}. Create or retrieve the component adapter * of an object of one of the associated types or their subtypes using {@link #get(Object)}. */ public class ComponentAdapter extends Component { private static final String COMPONENT_ADAPTER = "robomvvm_component_adapter"; /** * Can make associations between arbitrary classes and the {@link ComponentAdapter} subclasses that are used to make * components out of them. */ public static class Associations { static { adapterTypes = new HashMap<Class<?>, Class<? extends ComponentAdapter>>(); set(MenuItem.class, MenuItemAdapter.class); set(View.class, ViewAdapter.class); set(ImageView.class, ImageViewAdapter.class); set(TextView.class, TextViewAdapter.class); set(EditText.class, EditTextViewAdapter.class); set(CompoundButton.class, CompoundButtonViewAdapter.class); set(ProgressBar.class, ProgressBarViewAdapter.class); set(SeekBar.class, SeekBarViewAdapter.class); set(RatingBar.class, RatingBarViewAdapter.class); set(AdapterView.class, AdapterViewAdapter.class); set(ListView.class, ListViewAdapter.class); } private static final Map<Class<?>, Class<? extends ComponentAdapter>> adapterTypes; /** * Get the associated component adapter class associated with a class. If no * component adapter class is associated with the supplied class, then its super classes and interfaces * are searched until a component adapter association is found. * @param objectType * The class of the object to find associations for. * @return * The associated component adapter class, or null if none is found. */ public synchronized static Class<? extends ComponentAdapter> get(Class<?> objectType) { Preconditions.checkNotNull(objectType); Class<? extends ComponentAdapter> adapterType = null; Class<?> myObjectType = objectType; List<Class<?>> reachableObjectTypes = new ArrayList<Class<?>>(); while (myObjectType!= null) { reachableObjectTypes.add(myObjectType); reachableObjectTypes.addAll(Arrays.asList(myObjectType.getInterfaces())); myObjectType = myObjectType.getSuperclass(); } for(Class<?> klazz : reachableObjectTypes) { adapterType = adapterTypes.get(klazz); if(adapterType != null) return adapterType; } return null; } /** * Associates a component adapter class with an arbitrary class. * @param objectType * The class to make the association for. If an association already exists for this class, then it is overwritten. * @param adapterType * The component adapter class to associate with the supplied class. * If this is null, then any existing association of the supplied class is removed. */ public synchronized static void set(Class<?> objectType, Class<? extends ComponentAdapter> adapterType) { Preconditions.checkNotNull(objectType); if(adapterType != null) { adapterTypes.put(objectType, adapterType); } else { adapterTypes.remove(objectType); } } } /** * Create or retrieve the component adapter for the supplied object. Once created, the component adapter is stored as a tag * on the supplied object using {@link org.dbasu.robomvvm.util.ObjectTagger}, which stores weak references to the supplied object to * allow for Garbage Collection. Any component adapter associated with an object that has been garbage collected is not stored * internally by the library. * * @param targetObject * The object to get the component adapter for. * @return * The component adapter for the supplied object. * * @throws java.lang.RuntimeException * When no component adapter class is associated with * the class of the supplied object. */ public synchronized static ComponentAdapter get(Object targetObject) { Preconditions.checkNotNull(targetObject); ComponentAdapter componentAdapter = (ComponentAdapter) ObjectTagger.getTag(targetObject, COMPONENT_ADAPTER); if (componentAdapter != null) return componentAdapter; Class<? extends ComponentAdapter> adapterType = Associations.get(targetObject.getClass()); if(adapterType == null) { throw new RuntimeException("No ComponentAdapter Subclass Associated With " + targetObject.getClass().getName() + ". Call ComponentAdapter.Associations.set(Class<?> objectType, Class<? extends ComponentAdapter> adapterType) " + "To Make The Association."); } try { componentAdapter = adapterType.newInstance(); } catch (Exception e) { throw new RuntimeException(e); } componentAdapter.init(targetObject); ObjectTagger.setTag(targetObject, COMPONENT_ADAPTER, componentAdapter); return componentAdapter; } protected Object targetObject; protected ComponentAdapter() { } /** * Gets the target object of this component adapter. * @return * Returns the target object. */ public Object getTargetObject() { return targetObject; } private void init(Object targetObject) { this.targetObject = targetObject; adapt(); } /** * Call this function in subclasses to set up the component adapter. */ protected void adapt() { } }