FXGXY/java/net/micode/notes/ui/NotesListItem.java

/*
 * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
 *
 * 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 net.micode.notes.ui;

import android.content.Context;
import android.text.format.DateUtils;
import android.view.View;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

import net.micode.notes.R;
import net.micode.notes.data.Notes;
import net.micode.notes.tool.DataUtils;
import net.micode.notes.tool.ResourceParser.NoteItemBgResources;

/**
 * 笔记列表项自定义视图类，继承自LinearLayout
 * 用于显示笔记或文件夹在列表中的每一项
 */
public class NotesListItem extends LinearLayout {
    // 提醒图标视图
    private ImageView mAlert;
    // 标题文本视图
    private TextView mTitle;
    // 时间文本视图
    private TextView mTime;
    // 通话记录名称文本视图(专用于通话记录)
    private TextView mCallName;
    // 当前项绑定的数据
    private NoteItemData mItemData;
    // 复选框(用于多选模式)
    private CheckBox mCheckBox;

    /**
     * 构造函数
     * @param context 上下文对象
     */
    public NotesListItem(Context context) {
        super(context);
        // 从布局文件note_item.xml填充视图
        inflate(context, R.layout.note_item, this);
        // 初始化各个视图组件
        mAlert = (ImageView) findViewById(R.id.iv_alert_icon);
        mTitle = (TextView) findViewById(R.id.tv_title);
        mTime = (TextView) findViewById(R.id.tv_time);
        mCallName = (TextView) findViewById(R.id.tv_name);
        mCheckBox = (CheckBox) findViewById(android.R.id.checkbox);
    }

    /**
     * 绑定数据到列表项
     * @param context 上下文对象
     * @param data 笔记项数据
     * @param choiceMode 是否处于多选模式
     * @param checked 是否被选中
     */
    public void bind(Context context, NoteItemData data, boolean choiceMode, boolean checked) {
        // 处理多选模式下的复选框显示
        if (choiceMode && data.getType() == Notes.TYPE_NOTE) {
            mCheckBox.setVisibility(View.VISIBLE);
            mCheckBox.setChecked(checked);
        } else {
            mCheckBox.setVisibility(View.GONE);
        }

        // 保存数据引用
        mItemData = data;
        // 特殊处理通话记录文件夹
        if (data.getId() == Notes.ID_CALL_RECORD_FOLDER) {
            mCallName.setVisibility(View.GONE);
            mAlert.setVisibility(View.VISIBLE);
            mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);
            // 设置通话记录文件夹标题和计数
            mTitle.setText(context.getString(R.string.call_record_folder_name)
                    + context.getString(R.string.format_folder_files_count, data.getNotesCount()));
            mAlert.setImageResource(R.drawable.call_record);
        }
      // 处理通话记录文件夹中的项
      else if (data.getParentId() == Notes.ID_CALL_RECORD_FOLDER) {
            mCallName.setVisibility(View.VISIBLE);
            mCallName.setText(data.getCallName());// 显示通话名称
            mTitle.setTextAppearance(context,R.style.TextAppearanceSecondaryItem);
            mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet()));
            // 根据是否有提醒设置提醒图标
            if (data.hasAlert()) {
                mAlert.setImageResource(R.drawable.clock);
                mAlert.setVisibility(View.VISIBLE);
            } else {
                mAlert.setVisibility(View.GONE);// 处理普通笔记和文件夹
            }
        } else {
            mCallName.setVisibility(View.GONE);
            mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);

             // 文件夹类型处理
            if (data.getType() == Notes.TYPE_FOLDER) {
                mTitle.setText(data.getSnippet()
                        + context.getString(R.string.format_folder_files_count,
                                data.getNotesCount()));
                mAlert.setVisibility(View.GONE);
            } else {
                mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet()));// 笔记类型处理
                // 根据是否有提醒设置提醒图标
                if (data.hasAlert()) {
                    mAlert.setImageResource(R.drawable.clock);
                    mAlert.setVisibility(View.VISIBLE);
                } else {
                    mAlert.setVisibility(View.GONE);
                }
            }
        }
        // 设置相对时间显示(如"2分钟前")
        mTime.setText(DateUtils.getRelativeTimeSpanString(data.getModifiedDate()));

        setBackground(data);
    }

     /**
     * 根据数据设置列表项背景
     * @param data 笔记项数据
     */
    private void setBackground(NoteItemData data) {
        int id = data.getBgColorId();
        // 笔记类型背景设置
        if (data.getType() == Notes.TYPE_NOTE) {
            // 单一项或后面跟着文件夹的项
            if (data.isSingle() || data.isOneFollowingFolder()) {
                setBackgroundResource(NoteItemBgResources.getNoteBgSingleRes(id));
            } else if (data.isLast()) {
                setBackgroundResource(NoteItemBgResources.getNoteBgLastRes(id));
            } else if (data.isFirst() || data.isMultiFollowingFolder()) {
                setBackgroundResource(NoteItemBgResources.getNoteBgFirstRes(id));
            } else {
                setBackgroundResource(NoteItemBgResources.getNoteBgNormalRes(id));
            }
        } else {
            setBackgroundResource(NoteItemBgResources.getFolderBgRes());
        }
    }

     /**
     * 获取当前项绑定的数据
     * @return NoteItemData对象
     */
    public NoteItemData getItemData() {
        return mItemData;
    }
}