ListPrefSettingPopup.java

/*
 * Copyright (C) 2010 The Android Open Source Project
 *
 * 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.android.camera.ui;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.RadioButton;        // SPRD: add single choice button in 2nd level popup
import android.view.ViewGroup;            // SPRD: add single choice button in 2nd level popup

import com.android.camera.IconListPreference;
import com.android.camera.ListPreference;
import com.android.camera.util.CameraUtil;
import com.android.camera2.R;

// A popup window that shows one camera setting. The title is the name of the
// setting (ex: white-balance). The entries are the supported values (ex:
// daylight, incandescent, etc). If initialized with an IconListPreference,
// the entries will contain both text and icons. Otherwise, entries will be
// shown in text.
public class ListPrefSettingPopup extends AbstractSettingPopup
        implements AdapterView.OnItemClickListener {

    private static final boolean DEBUG = true;
    private static final String TAG = "ListPrefSettingPopup";

    private ListPreference mPreference;
    private Listener mListener;
    private int mIndex = -1;    // SPRD: add single choice button in 2nd level popup

    static public interface Listener {
        public void onListPrefChanged(ListPreference pref);
        public void onCancelButtonClicked();
    }

    public ListPrefSettingPopup(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    private class ListPrefSettingAdapter extends SimpleAdapter {
        ListPrefSettingAdapter(Context context, List<? extends Map<String, ?>> data,
                int resource, String[] from, int[] to) {
            super(context, data, resource, from, to);
        }

        @Override
        public void setViewImage(ImageView v, String value) {
            if ("".equals(value)) {
                // Some settings have no icons. Ex: exposure compensation.
                v.setVisibility(View.GONE);
            } else {
                super.setViewImage(v, value);
            }
        }

        /* SPRD: add single choice button in 2nd level popup @{ */
        @Override
        public View getView(final int pos, View convertView, ViewGroup parent) {
            ViewHolder holder = null;
            convertView = super.getView(pos, convertView, parent);

            holder = new ViewHolder();
            holder.viewBtn = (RadioButton) convertView.findViewById(R.id.btn);

            convertView.setTag(holder);

            if (holder != null && holder.viewBtn != null) {
                if (mIndex != -1 && mIndex == pos) {
                    holder.viewBtn.setChecked(true);
                } else {
                    holder.viewBtn.setChecked(false);
                }
            }

            return convertView;
        }
        class ViewHolder {
            RadioButton viewBtn;
        }
        /* add single choice button in 2nd level popup end @} */
    }

    public void initialize(ListPreference preference) {
        mPreference = preference;
        Context context = getContext();
        CharSequence[] entries = mPreference.getEntries();
        int[] iconIds = null;
        if (preference instanceof IconListPreference) {
            iconIds = ((IconListPreference) mPreference).getImageIds();
            if (iconIds == null) {
                iconIds = ((IconListPreference) mPreference).getLargeIconIds();
            }
        }
        // Set title.
        mTitle.setText(mPreference.getTitle());

        // Prepare the ListView.
        ArrayList<HashMap<String, Object>>
            listItem = new ArrayList<HashMap<String, Object>>();

        for(int i = 0; i < entries.length; ++i) {
            HashMap<String, Object> map = new HashMap<String, Object>();
            map.put("text", entries[i].toString());
            if (iconIds != null) map.put("image", iconIds[i]);
            listItem.add(map);
        }

        mIndex = mPreference.findIndexOfValue(mPreference.getValue()); // SPRD: add single choice button in 2nd level popup
        SimpleAdapter listItemAdapter =
            new ListPrefSettingAdapter(
                context,
                listItem,
                R.layout.setting_item,
                new String[] {"text", "image"},
                new int[] {R.id.text, R.id.image});

        // SPRD: we need use footer view handle "cancel" button process
        LayoutInflater inflater =
            (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View btnCancelPanel = inflater.inflate(R.layout.list_setting_popup_footer_view, null);
        View btnCancel = btnCancelPanel.findViewById(R.id.cancel_btn);
        View.OnClickListener cancelClickListener = new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (mListener != null) {
                    CameraUtil.P(
                        DEBUG, TAG, "second level list view onButtonCancel click event.");
                    mListener.onCancelButtonClicked();
                }
            }
        };
        btnCancel.setOnClickListener(cancelClickListener);

        ((ListView) mSettingList).addFooterView(btnCancelPanel);
        ((ListView) mSettingList).setAdapter(listItemAdapter);
        ((ListView) mSettingList).setOnItemClickListener(this);
        // @origin.
        //reloadPreference();
    }

    // The value of the preference may have changed. Update the UI.
    @Override
    public void reloadPreference() {
        int index = mPreference.findIndexOfValue(mPreference.getValue());
        if (index != -1) {
            ((ListView) mSettingList).setItemChecked(index, true);
        } else {
            Log.e(TAG, "Invalid preference value.");
            mPreference.print();
        }
    }

    public void setSettingChangedListener(Listener listener) {
        mListener = listener;
    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int index, long id) {
        mPreference.setValueIndex(index);
        if (mListener != null) mListener.onListPrefChanged(mPreference);
    }
}