de.uulm.graphicalpasswords.openuyi.UYIPagerAdapter.java Source code

Introduction

Here is the source code for de.uulm.graphicalpasswords.openuyi.UYIPagerAdapter.java

Source

/*******************************************************************************
 * Copyright 2014 Marcel Walch, Florian Schaub
 * 
 * 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 de.uulm.graphicalpasswords.openuyi;

import java.util.Random;

import de.uulm.graphicalpasswords.R;

import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.os.Parcelable;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageButton;
import android.widget.TableLayout;
import android.widget.TableRow;

public class UYIPagerAdapter extends PagerAdapter {

    private int[] pictures_page1 = new int[9];
    private int[] pictures_page2 = new int[9];
    private int[] pictures_page3 = new int[9];

    private int[][] picture_arrays = { pictures_page1, pictures_page2, pictures_page3 };

    private OnClickListener clickListener;

    public UYIPagerAdapter(OnClickListener listener, Activity activity) {
        super();
        this.clickListener = listener;

        int length = UYIActivity.DISTORTED_PICTURES.length;

        boolean[] pictureUsed = new boolean[length];
        for (int i = 0; i < length; i++) {
            pictureUsed[i] = false;
        }

        int[] pictures = UYIActivity.DISTORTED_PICTURES;

        Random random = new Random(System.currentTimeMillis());
        for (int i = 0; i < 9; i++) {
            for (int j = 0; j < 3; j++) {
                int index = random.nextInt(length);
                boolean pictureset = false;
                do {
                    if (!pictureUsed[index]) {
                        picture_arrays[j][i] = pictures[index];
                        pictureUsed[index] = true;
                        pictureset = true;
                    } else {
                        index++;
                        if (index >= pictures.length) {
                            index = 0;
                        }
                    }
                } while (!pictureset);
            }
        }
    }

    @Override
    public void destroyItem(View collection, int arg1, Object object) {
        ((ViewPager) collection).removeView((View) object);
    }

    @Override
    public int getCount() {
        return 3;
    }

    @Override
    public Object instantiateItem(View collection, int pos) {
        LayoutInflater inflater = (LayoutInflater) collection.getContext()
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        int page = 0;

        switch (pos) {
        case 1:
            page = R.layout.uyipage2;
            break;
        case 2:
            page = R.layout.uyipage3;
            break;
        default:
            page = R.layout.uyipage1;
            break;
        }

        View view = inflater.inflate(page, null);
        TableLayout currentTable;

        switch (pos) {
        case 1:
            currentTable = (TableLayout) view.findViewById(R.id.uyi_tablelayout_page2);
            break;
        case 2:
            currentTable = (TableLayout) view.findViewById(R.id.uyi_tablelayout_page3);
            break;
        default:
            currentTable = (TableLayout) view.findViewById(R.id.uyi_tablelayout_page1);
            break;
        }

        // Add ImageButtons to TableLayout
        int index = 0;
        for (int i = 0; i < 3; i++) {
            TableRow currentRow = new TableRow(view.getContext());
            for (int j = 0; j < 3; j++) {
                ImageButton button = new ImageButton(view.getContext());
                button.setBackgroundColor(Color.TRANSPARENT);
                button.setPadding(3, 3, 3, 3);
                button.setAdjustViewBounds(true);
                button.setOnClickListener(clickListener);
                button.setImageResource(picture_arrays[pos][index]);
                button.setId(picture_arrays[pos][index]);
                button.setClickable(true);
                index++;
                currentRow.addView(button);
            }
            currentTable.addView(currentRow);
        }

        ((ViewPager) collection).addView(view, 0);

        return view;
    }

    @Override
    public boolean isViewFromObject(View view, Object object) {
        return view == ((View) object);
    }

    @Override
    public Parcelable saveState() {
        return null;
    }

    @Override
    public void finishUpdate(View arg0) {
        // TODO Auto-generated method stub

    }

    @Override
    public void restoreState(Parcelable arg0, ClassLoader arg1) {
        // TODO Auto-generated method stub
    }

    @Override
    public void startUpdate(View arg0) {
        // TODO Auto-generated method stub
    }

    public String getPictureSet() {
        String set1 = "";
        String set2 = "";
        String set3 = "";
        for (int i = 0; i < pictures_page1.length; i++) {
            set1 += "[" + pictures_page1[i] + "]";
            set2 += "[" + pictures_page2[i] + "]";
            set3 += "[" + pictures_page3[i] + "]";
        }
        return "(" + set1 + ")(" + set2 + ")(" + set3 + ")";
    }
}