private NotebookList.Notebook GetSelectedNotebook()
{
NotebookList.Notebook notebook = null;
this.list.Dispatcher.Invoke(() =>
{
notebook = this.list.SelectedItem as NotebookList.Notebook;
});
return(notebook);
}
/// <summary>
/// 列表选中项改变
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ListSelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (prevSelectedItems != null)
{
SaveNotebookContent(prevSelectedItems, this.text.Text, false);
}
NotebookList.Notebook notebook = GetSelectedNotebook();
if (notebook != null)
{
LoadNotebookContent(notebook.id);
}
prevSelectedItems = notebook;
}
/// <summary>
/// 自动保存
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public void AutoSave(object sender, System.Timers.ElapsedEventArgs e)
{
NotebookList.Notebook notebook = GetSelectedNotebook();
string text = "";
this.text.Dispatcher.Invoke(() =>
{
text = this.text.Text;
});
if (notebook != null && text != "")
{
SaveNotebookContent(notebook, text);
}
// 自动保存，消息提示
SetTips("自动保存成功", 3000);
}
private void Text_KeyDown(object sender, KeyEventArgs e)
{
// ctrl+s
if (Keyboard.IsKeyDown(Key.LeftCtrl) && Keyboard.IsKeyDown(Key.S))
{
NotebookList.Notebook notebook = GetSelectedNotebook();
string text = "";
this.text.Dispatcher.Invoke(() =>
{
text = this.text.Text;
});
if (notebook != null && text != "")
{
SaveNotebookContent(notebook, text);
}
}
}
/// <summary>
/// 删除日记本
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void DeleteClick(object sender, RoutedEventArgs e)
{
NotebookList.Notebook notebook = GetSelectedNotebook();
IDictionary <string, string> parameters = Request.getParameters();
parameters.Add("id", notebook.id.ToString());
Result result = JsonConvert.DeserializeObject <Result>(Http.Send(Request.baseUrl + Request.DeleteNotebook, "POST", parameters));
if (result.code == 1000)
{
prevSelectedItems = null;
this.list.Items.Remove(notebook);
// 减去1的原因是为了方便后续的分页加载，防止加载断层
start--;
}
}
/// <summary>
/// 修改标题
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ModifyClick(object sender, RoutedEventArgs e)
{
NotebookList.Notebook notebook = GetSelectedNotebook();
Input input = new Input();
string content = "";
input.input.Text = notebook.title;
input.confirm.Click += (object _sender, RoutedEventArgs _e) =>
{
content = input.input.Text;
if (content.Length <= 0)
{
MessageBox.Show("请输入标题");
}
else
{
IDictionary <string, string> parameters = Request.getParameters();
parameters.Add("id", notebook.id.ToString());
parameters.Add("title", notebook.title);
Result result = JsonConvert.DeserializeObject <Result>(Http.Send(Request.baseUrl + Request.ModifyTitleNotebook, "POST", parameters));
if (result.code == 1000)
{
// 更新名字
notebook.title = content;
this.list.Items.Refresh();
input.Close();
}
}
};
input.ShowDialog();
}
/// <summary>
/// 保存日记本内容
/// </summary>
/// <param name="notebook"></param>
/// <param name="content"></param>
private void SaveNotebookContent(NotebookList.Notebook notebook, string content, bool async = true)
{
long updated_at = Int64.Parse(Helper.GetTimeStamp());
if (notebook is null || content == "" || !saveLock)
{
return;
}
saveLock = true;
IDictionary <string, string> parameters = Request.getParameters();
parameters.Add("id", notebook.id.ToString());
parameters.Add("title", notebook.title);
parameters.Add("content", content);
parameters.Add("updated_at", (updated_at / 1000).ToString());
void callback(string responseText)
{
saveLock = false;
if (responseText == "")
{
return;
}
UpdateResult result = JsonConvert.DeserializeObject <UpdateResult>(responseText);
if (result.code == 1000)
{
this.list.Dispatcher.Invoke(() =>
{
notebook.updated_at = result.data.updated_at;
});
this.SetTips("保存成功", 3000);
}
else if (result.code == 1003) // 文件有冲突
{
this.list.Dispatcher.Invoke(() =>
{
isEnd = false;
RewindLoadNotebookPage();
});
}
}
string tempResult = "";
if (async)
#pragma warning disable CS4014 // 由于此调用不会等待，因此在调用完成前将继续执行当前方法
{
Http.SendAsync(Request.baseUrl + Request.SaveNotebook, "POST", parameters, callback);
}
else
{
tempResult = Http.Send(Request.baseUrl + Request.SaveNotebook, "POST", parameters);
callback(tempResult);
}
}
