com.ngandroid.lib.NgAndroid.java Source code

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Here is the source code for com.ngandroid.lib.NgAndroid.java

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/*
 * Copyright 2015 Tyler Davis
 *
 *    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.ngandroid.lib;

import android.app.Activity;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.ngandroid.lib.attacher.AttributeAttacher;
import com.ngandroid.lib.annotations.Ignore;
import com.ngandroid.lib.ng.ModelBuilder;
import com.ngandroid.lib.ng.NgAttribute;
import com.ngandroid.lib.ngattributes.ngblur.NgBlur;
import com.ngandroid.lib.ngattributes.ngchange.NgChange;
import com.ngandroid.lib.ngattributes.ngclick.NgClick;
import com.ngandroid.lib.ngattributes.ngfocus.NgFocus;
import com.ngandroid.lib.ngattributes.ngif.NgDisabled;
import com.ngandroid.lib.ngattributes.ngif.NgGone;
import com.ngandroid.lib.ngattributes.ngif.NgInvisible;
import com.ngandroid.lib.ngattributes.nglongclick.NgLongClick;
import com.ngandroid.lib.ngattributes.ngmodel.NgModel;
import com.ngandroid.lib.utils.JsonUtils;

import org.json.JSONException;
import org.json.JSONObject;

import java.lang.reflect.Field;

/**
 * Created by davityle on 1/12/15.
 */
public class NgAndroid {

    private static NgAndroid instance;

    /**
     * this method is not thread safe
     * @return
     */
    public static NgAndroid getInstance() {
        if (instance == null) {
            instance = new Builder().build();
        }
        return instance;
    }

    private final SparseArray<NgAttribute> mAttributes;

    private NgAndroid(SparseArray<NgAttribute> attributes) {
        this.mAttributes = attributes;
    }

    public void setContentView(Activity activity, int resourceId) {
        setContentView(activity, activity, resourceId);
    }

    public void setContentView(Object scope, Activity activity, int resourceId) {
        new AttributeAttacher(activity, scope, mAttributes).setContentView(activity, resourceId);
    }

    public View inflate(Activity activity, int resourceId, ViewGroup viewGroup, boolean attach) {
        return inflate(activity, activity, resourceId, viewGroup, attach);
    }

    public View inflate(Activity activity, int resourceId, ViewGroup viewGroup) {
        return inflate(activity, activity, resourceId, viewGroup, false);
    }

    public View inflate(Object scope, Activity activity, int resourceId, ViewGroup viewGroup, boolean attach) {
        return new AttributeAttacher(activity, scope, mAttributes).inflate(resourceId, viewGroup, attach);
    }

    public View inflate(Object scope, LayoutInflater inflater, int resourceId, ViewGroup viewGroup) {
        return inflate(scope, inflater, resourceId, viewGroup, false);
    }

    public View inflate(Object scope, LayoutInflater inflater, int resourceId, ViewGroup viewGroup,
            boolean attach) {
        return new AttributeAttacher(inflater, scope, mAttributes).inflate(resourceId, viewGroup, attach);
    }

    public <T> T buildModel(Class<T> clss) {
        return (T) new ModelBuilder(clss).create();
    }

    public <T> T buildModel(Object scope, String fieldName, Class<T> clss) {
        try {
            Field f = scope.getClass().getDeclaredField(fieldName);
            f.setAccessible(true);
            T val = (T) new ModelBuilder(clss).create();
            f.set(scope, val);
            return val;
        } catch (NoSuchFieldException e) {
            //TODO
            throw new RuntimeException(
                    "There is no such field '" + fieldName + "' found in " + scope.getClass().getSimpleName());
        } catch (IllegalAccessException e) {
            throw new RuntimeException(
                    "Unable to access field '" + fieldName + "' in " + scope.getClass().getSimpleName());
        }
    }

    public <T> T buildScope(Class<T> clss) {
        T instance;
        try {
            instance = clss.newInstance();
            Field[] fields = clss.getDeclaredFields();
            for (Field f : fields) {
                f.setAccessible(true);
                Class type = f.getType();
                if (type.isInterface() && !f.isAnnotationPresent(Ignore.class)) {
                    f.set(instance, buildModel(type));
                }
            }
        } catch (InstantiationException | IllegalAccessException e) {
            // TODO
            throw new RuntimeException("Error instantiating scope.", e);
        }
        return instance;
    }

    public <T> T modelFromJson(String json, Class<T> clss) throws JSONException {
        return JsonUtils.buildModelFromJson(new JSONObject(json), clss);
    }

    public static final class Builder {
        private SparseArray<NgAttribute> attributes = new SparseArray<>();

        public Builder addCustomAttribute(int attributeId, NgAttribute ngAttribute) {
            attributes.put(attributeId, ngAttribute);
            return this;
        }

        public NgAndroid build() {
            attributes.put(R.styleable.ngAndroid_ngModel, NgModel.getInstance());
            attributes.put(R.styleable.ngAndroid_ngClick, NgClick.getInstance());
            attributes.put(R.styleable.ngAndroid_ngLongClick, NgLongClick.getInstance());
            attributes.put(R.styleable.ngAndroid_ngChange, NgChange.getInstance());
            attributes.put(R.styleable.ngAndroid_ngGone, NgGone.getInstance());
            attributes.put(R.styleable.ngAndroid_ngInvisible, NgInvisible.getInstance());
            attributes.put(R.styleable.ngAndroid_ngDisabled, NgDisabled.getInstance());
            attributes.put(R.styleable.ngAndroid_ngBlur, NgBlur.getInstance());
            attributes.put(R.styleable.ngAndroid_ngFocus, NgFocus.getInstance());
            return new NgAndroid(attributes);
        }
    }
}