com.jaspervanriet.huntingthatproduct.Views.FeedContextMenuManager.java Source code

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Here is the source code for com.jaspervanriet.huntingthatproduct.Views.FeedContextMenuManager.java

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/*
 * Copyright (C) 2015 Jasper van Riet
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.jaspervanriet.huntingthatproduct.Views;

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewTreeObserver;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.OvershootInterpolator;
import android.widget.RelativeLayout;

import com.jaspervanriet.huntingthatproduct.Utils.Utils;

public class FeedContextMenuManager extends RecyclerView.OnScrollListener
        implements View.OnAttachStateChangeListener {

    private static FeedContextMenuManager instance;

    private FeedContextMenu contextMenuView;

    private boolean isContextMenuDismissing;
    private boolean isContextMenuShowing;

    public static FeedContextMenuManager getInstance() {
        if (instance == null) {
            instance = new FeedContextMenuManager();
        }
        return instance;
    }

    private FeedContextMenuManager() {

    }

    public void toggleContextMenuFromView(View openingView, int feedItem,
            FeedContextMenu.OnFeedContextMenuItemClickListener listener, boolean isMainActivity) {
        if (contextMenuView == null) {
            showContextMenuFromView(openingView, feedItem, listener, isMainActivity);
        } else {
            hideContextMenu();
        }
    }

    private void showContextMenuFromView(final View openingView, int feedItem,
            FeedContextMenu.OnFeedContextMenuItemClickListener listener, boolean isMainActivity) {
        if (!isContextMenuShowing) {
            isContextMenuShowing = true;
            contextMenuView = new FeedContextMenu(openingView.getContext());
            contextMenuView.bindToItem(feedItem);
            contextMenuView.addOnAttachStateChangeListener(this);
            contextMenuView.setOnFeedMenuItemClickListener(listener);
            ViewGroup viewGroup = (ViewGroup) openingView.getRootView().findViewById(android.R.id.content);
            RelativeLayout relativeLayout;
            if (isMainActivity) {
                DrawerLayout drawerLayout = (DrawerLayout) viewGroup.getChildAt(0);
                relativeLayout = (RelativeLayout) drawerLayout.getChildAt(0);
            } else {
                relativeLayout = (RelativeLayout) viewGroup.getChildAt(0);
            }
            relativeLayout.addView(contextMenuView);
            contextMenuView.getViewTreeObserver().addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
                @Override
                public boolean onPreDraw() {
                    contextMenuView.getViewTreeObserver().removeOnPreDrawListener(this);
                    setupContextMenuInitialPosition(openingView);
                    performShowAnimation();
                    return false;
                }
            });
        }
    }

    private void setupContextMenuInitialPosition(View openingView) {
        final int[] openingViewLocation = new int[2];
        openingView.getLocationOnScreen(openingViewLocation);
        int additionalBottomMargin = Utils.dpToPx(16);
        contextMenuView.setTranslationX(openingViewLocation[0] - contextMenuView.getWidth() / 3);
        contextMenuView
                .setTranslationY(openingViewLocation[1] - contextMenuView.getHeight() - additionalBottomMargin);
    }

    private void performShowAnimation() {
        contextMenuView.setPivotX(contextMenuView.getWidth() / 2);
        contextMenuView.setPivotY(contextMenuView.getHeight());
        contextMenuView.setScaleX(0.1f);
        contextMenuView.setScaleY(0.1f);
        contextMenuView.animate().scaleX(1f).scaleY(1f).setDuration(150)
                .setInterpolator(new OvershootInterpolator()).setListener(new AnimatorListenerAdapter() {
                    @Override
                    public void onAnimationEnd(Animator animation) {
                        isContextMenuShowing = false;
                    }
                });
    }

    public void hideContextMenu() {
        if (!isContextMenuDismissing) {
            isContextMenuDismissing = true;
            performDismissAnimation();
        }
    }

    private void performDismissAnimation() {
        contextMenuView.setPivotX(contextMenuView.getWidth() / 2);
        contextMenuView.setPivotY(contextMenuView.getHeight());
        contextMenuView.animate().scaleX(0.1f).scaleY(0.1f).setDuration(150)
                .setInterpolator(new AccelerateInterpolator()).setStartDelay(100)
                .setListener(new AnimatorListenerAdapter() {
                    @Override
                    public void onAnimationEnd(Animator animation) {
                        if (contextMenuView != null) {
                            contextMenuView.dismiss();
                        }
                        isContextMenuDismissing = false;
                    }
                });
    }

    public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
        if (contextMenuView != null) {
            hideContextMenu();
            contextMenuView.setTranslationY(contextMenuView.getTranslationY() - dy);
        }
    }

    @Override
    public void onViewAttachedToWindow(View v) {

    }

    @Override
    public void onViewDetachedFromWindow(View v) {
        contextMenuView = null;
    }
}