com.grupp32.activity.FlexibleSpaceFragment.java Source code

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Here is the source code for com.grupp32.activity.FlexibleSpaceFragment.java

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/*
 * Copyright 2014 Soichiro Kashima
 *
 * 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.grupp32.activity;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.View;

import com.github.ksoichiro.android.observablescrollview.ObservableScrollViewCallbacks;
import com.github.ksoichiro.android.observablescrollview.ScrollState;
import com.github.ksoichiro.android.observablescrollview.Scrollable;

import collection.Summoner;

public abstract class FlexibleSpaceFragment<S extends Scrollable> extends Fragment
        implements ObservableScrollViewCallbacks {

    // Static variables for easier changes
    public static final String ARG_SCROLL_Y = "ARG_SCROLL_Y";
    public static final String ARG_SUMMONER = "ARG_SUMMONER";
    public static final String ARG_VERSION = "ARG_VERSION";

    /**
     * Method sets information to a bundle for passing it onto the fragment (in our case TabFragment)
     *
     * @param scrollY value for current scroll-axis
     * @param summoner Summoner-object passed
     * @param patchVersion patch version passed
     */
    public void setArguments(int scrollY, Summoner summoner, String patchVersion) {
        if (0 <= scrollY) {
            // Set information to bundle and set it as arguments
            Bundle args = new Bundle();
            args.putInt(ARG_SCROLL_Y, scrollY);
            args.putSerializable(ARG_SUMMONER, summoner);
            args.putString(ARG_VERSION, patchVersion);
            setArguments(args);
        }
    }

    public void setScrollY(int scrollY, int threshold) {
        View view = getView();
        if (view == null) {
            return;
        }
        Scrollable scrollView = (Scrollable) view.findViewById(R.id.scroll);
        if (scrollView == null) {
            return;
        }
        scrollView.scrollVerticallyTo(scrollY);
    }

    protected void updateFlexibleSpace(int scrollY) {
        updateFlexibleSpace(scrollY, getView());
    }

    protected abstract void updateFlexibleSpace(int scrollY, View view);

    @Override
    public void onScrollChanged(int scrollY, boolean firstScroll, boolean dragging) {
        if (getView() == null) {
            return;
        }
        updateFlexibleSpace(scrollY, getView());
    }

    @Override
    public final void onDownMotionEvent() {
    }

    @Override
    public final void onUpOrCancelMotionEvent(ScrollState scrollState) {
    }

    protected S getScrollable() {
        View view = getView();
        return view == null ? null : (S) view.findViewById(R.id.scroll);
    }
}