Notes/src/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;


public class NotesListItem extends LinearLayout {
    private ImageView mAlert;          // 提醒图标（时钟或通话记录图标）
    private TextView mTitle;           // 笔记/文件夹标题或内容摘要
    private TextView mTime;            // 最后修改时间
    private TextView mCallName;        // 通话记录来电者名称（仅通话记录显示）
    private NoteItemData mItemData;    // 当前列表项的数据模型
    private CheckBox mCheckBox;        // 选择模式下的复选框（用于批量操作）

    /**
     * 构造函数，初始化视图组件
     */
    public NotesListItem(Context context) {
        super(context);
        inflate(context, R.layout.note_item, this);
        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);
    }

    /**
     * 绑定数据到视图，根据数据类型动态调整UI样式
     * @param data 笔记数据模型
     * @param checked 选择模式下是否选中
     */
    public void bind(Context context, NoteItemData data, boolean choiceMode, boolean checked) {
        // 处理选择模式显示
        if (choiceMode && data.getType() == Notes.TYPE_NOTE) {
            mCheckBox.setVisibility(View.VISIBLE);
            mCheckBox.setChecked(checked);
        } else {
            mCheckBox.setVisibility(View.GONE);
        }

        mItemData = data;
        // 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);
            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);
        } 
        // 处理通话记录笔记
        else if (data.getParentId() == Notes.ID_CALL_RECORD_FOLDER) {
            mCallName.setVisibility(View.VISIBLE);
            mCallName.setText(data.getCallName());
            mTitle.setTextAppearance(context,R.style.TextAppearanceSecondaryItem);
            mTitle.setText(DataUtils.getFormattedSnippet(data.getSnippet()));
            if (data.hasAlert()) {
                mAlert.setImageResource(R.drawable.clock);
                mAlert.setVisibility(View.VISIBLE);
            } else {
                mAlert.setVisibility(View.GONE);
            }
        } 
        // 处理普通文件夹和笔记
        else {
            mCallName.setVisibility(View.GONE);
            mTitle.setTextAppearance(context, R.style.TextAppearancePrimaryItem);

            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()));
                if (data.hasAlert()) {
                    mAlert.setImageResource(R.drawable.clock);
                    mAlert.setVisibility(View.VISIBLE);
                } else {
                    mAlert.setVisibility(View.GONE);
                }
            }
        }
        // 设置最后修改时间（相对时间格式）
        mTime.setText(DateUtils.getRelativeTimeSpanString(data.getModifiedDate()));

        // 根据数据类型和位置设置背景
        setBackground(data);
    }

    /**
     * 根据笔记类型和位置设置不同的背景资源
     */
    private void setBackground(NoteItemData data) {
        int id = data.getBgColorId();
        if (data.getType() == Notes.TYPE_NOTE) {
            // 根据笔记在列表中的位置设置不同背景
            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 {
            // 文件夹使用统一背景
            setBackgroundResource(NoteItemBgResources.getFolderBgRes());
        }
    }

    /**
     * 获取当前列表项的数据模型
     */
    public NoteItemData getItemData() {
        return mItemData;
    }
}