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package org.solovyev.android.fragments;

import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import org.solovyev.common.Builder;
import org.solovyev.common.JPredicate;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;

public final class MultiPaneFragmentDef {

    /*
	**********************************************************************
    *
    *                           FIELDS
    *
    **********************************************************************
    */

	@Nonnull
	private final String tag;

	private final boolean addToBackStack;

	@Nullable
	private /*final*/ JPredicate reuseCondition;

	@Nonnull
	private /*final*/ Builder builder;

    /*
    **********************************************************************
    *
    *                           CONSTRUCTORS
    *
    **********************************************************************
    */

	private MultiPaneFragmentDef(@Nonnull String tag, boolean addToBackStack) {
		this.tag = tag;
		this.addToBackStack = addToBackStack;
	}

	@Nonnull
	public static MultiPaneFragmentDef forClass(@Nonnull String tag, boolean addToBackStack, @Nonnull Class fragmentClass, @Nonnull Context context, @Nullable Bundle args) {
		return newInstance(tag, addToBackStack, ReflectionFragmentBuilder.forClass(context, fragmentClass, args), SimpleFragmentReuseCondition.forClass(fragmentClass));
	}

	@Nonnull
	public static MultiPaneFragmentDef forClass(@Nonnull String tag, boolean addToBackStack, @Nonnull Class fragmentClass, @Nonnull Context context, @Nullable Bundle args, @Nullable JPredicate reuseCondition) {
		return newInstance(tag, addToBackStack, ReflectionFragmentBuilder.forClass(context, fragmentClass, args), reuseCondition);
	}

	@Nonnull
	public static MultiPaneFragmentDef newInstance(@Nonnull String tag, boolean addToBackStack, @Nonnull Builder builder, @Nullable JPredicate reuseCondition) {
		final MultiPaneFragmentDef result = new MultiPaneFragmentDef(tag, addToBackStack);
		result.builder = builder;
		result.reuseCondition = reuseCondition;
		return result;
	}

	@Nonnull
	public static MultiPaneFragmentDef fromFragmentDef(@Nonnull FragmentDef fragmentDef, @Nullable Bundle fragmentArgs, @Nonnull Context context) {
		final MultiPaneFragmentDef result = new MultiPaneFragmentDef(fragmentDef.getFragmentTag(), fragmentDef.isAddToBackStack());

		final Class fragmentClass = fragmentDef.getFragmentClass();
		result.builder = ReflectionFragmentBuilder.forClass(context, fragmentClass, fragmentArgs);
		result.reuseCondition = SimpleFragmentReuseCondition.forClass(fragmentClass);

		return result;
	}

    /*
    **********************************************************************
    *
    *                           METHODS
    *
    **********************************************************************
    */

	public boolean isAddToBackStack() {
		return addToBackStack;
	}

	@Nonnull
	public String getTag() {
		return tag;
	}

	@Nonnull
	public Fragment build() {
		return builder.build();
	}

	public boolean canReuse(@Nonnull Fragment fragment) {
		return reuseCondition != null && reuseCondition.apply(fragment);
	}
}