diff options
Diffstat (limited to 'Juick/ViewModels')
| -rw-r--r-- | Juick/ViewModels/MessageListViewModelBase.cs | 126 |
1 files changed, 73 insertions, 53 deletions
diff --git a/Juick/ViewModels/MessageListViewModelBase.cs b/Juick/ViewModels/MessageListViewModelBase.cs index 2cf5157..5dc8aed 100644 --- a/Juick/ViewModels/MessageListViewModelBase.cs +++ b/Juick/ViewModels/MessageListViewModelBase.cs @@ -1,37 +1,45 @@ using System;
-using System.ComponentModel;
using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Net;
-using System.Runtime.Serialization.Json;
using System.Collections.ObjectModel;
+using System.ComponentModel;
+using System.Net;
using System.Windows;
-using System.Windows.Controls;
using System.Windows.Media.Imaging;
using Juick.Api;
using RestSharp;
+using System.Windows.Input;
+using Juick.Classes;
namespace Juick.ViewModels
{
public class MessageListViewModelBase : INotifyPropertyChanged
{
+ bool isDataLoading;
+
public MessageListViewModelBase()
{
- this.Items = new ObservableCollection<MessageViewModel>();
+ Items = new ObservableCollection<MessageViewModel>();
+ LoadMessagesPageCommand = new DelegateCommand(LoadData, () => !IsDataLoading);
}
public string RestUri { get; set; }
-
+
/// <summary>
/// A collection for MessageViewModel objects.
/// </summary>
public ObservableCollection<MessageViewModel> Items { get; private set; }
-
- public bool IsDataLoaded
+
+ public DelegateCommand LoadMessagesPageCommand { get; private set; }
+
+ public bool IsDataLoading
{
- get;
- private set;
+ get { return isDataLoading; }
+ set
+ {
+ isDataLoading = value;
+ NotifyPropertyChanged("IsDataLoading");
+ LoadMessagesPageCommand.NotifyCanExecuteChanged();
+ }
}
/// <summary>
@@ -39,57 +47,69 @@ namespace Juick.ViewModels /// </summary>
public void LoadData()
{
+ if (IsDataLoading) {
+ return;
+ }
+
+ const int PageSize = 1;
+
if (string.IsNullOrEmpty(RestUri))
{
RestUri = "/home?1=1";
}
- var request = new RestRequest(RestUri +"&rnd=" + Environment.TickCount);
+
+ // super-костыли
+ // todo: rewrite
+ else if (RestUri.StartsWith("/home?", StringComparison.InvariantCulture) && Items.Count > 0)
+ {
+ var lastItem = Items[Items.Count - 1];
+ RestUri = string.Format("/home?before_mid={0}&page={1}", lastItem.MID, PageSize);
+ }
+ else if (RestUri.StartsWith("/messages?", StringComparison.InvariantCulture) && Items.Count > 0)
+ {
+ var lastItem = Items[Items.Count - 1];
+ RestUri = string.Format("/messages?before_mid={0}&page={1}", lastItem.MID, PageSize);
+ }
+
+ var request = new RestRequest(RestUri + "&rnd=" + Environment.TickCount);
App.Client.Authenticator = new HttpBasicAuthenticator(App.Account.Credentials.UserName, App.Account.Credentials.Password);
- App.Client.ExecuteAsync<List<Message>>(request, response =>
- {
- if (response.StatusCode != HttpStatusCode.OK)
- {
- MessageBox.Show(response.StatusCode.ToString());
- return;
- }
-
- var messages = response.Data;
- Items.Clear();
- messages.ForEach(post =>
- {
- var item = new MessageViewModel(post)
- {
- Status =
- string.Format(
- "Posted on: {0}, replies: {1}",
- post.Timestamp,
- post.Replies)
- };
- Items.Add(item);
- var imageUri = new Uri(string.Format("http://i.juick.com/as/{0}.png", post.User.Uid), UriKind.Absolute);
- item.UserAvatar = new BitmapImage
- {
- UriSource = imageUri
- };
- if (post.Photo != null)
- {
- item.Attachment = new BitmapImage { UriSource = new Uri(post.Photo.Small, UriKind.Absolute) };
- }
-
- });
- NotifyPropertyChanged("Items");
- });
+ App.Client.ExecuteAsync<List<Message>>(request, ProcessResponse);
+ IsDataLoading = true;
+ }
+
+ void ProcessResponse(IRestResponse<List<Message>> response)
+ {
+ IsDataLoading = false;
+ if (response.StatusCode != HttpStatusCode.OK)
+ {
+ MessageBox.Show(response.StatusCode.ToString());
+ return;
+ }
+
+ //Items.Clear();
+ foreach (var post in response.Data)
+ {
+ var status = string.Format("Posted on: {0}, replies: {1}", post.Timestamp, post.Replies);
+ var item = new MessageViewModel(post) { Status = status };
+ Items.Add(item);
+ var imageUri = new Uri(string.Format("http://i.juick.com/as/{0}.png", post.User.Uid), UriKind.Absolute);
+ item.UserAvatar = new BitmapImage { UriSource = imageUri };
+ if (post.Photo != null)
+ {
+ item.Attachment = new BitmapImage { UriSource = new Uri(post.Photo.Small, UriKind.Absolute) };
+ }
+ }
}
-
+
public event PropertyChangedEventHandler PropertyChanged;
- public void NotifyPropertyChanged(String propertyName)
+
+ public void NotifyPropertyChanged(string propertyName)
{
- PropertyChangedEventHandler handler = PropertyChanged;
- if (null != handler)
+ if (PropertyChanged != null)
{
- handler(this, new PropertyChangedEventArgs(propertyName));
+ PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
}
-}
\ No newline at end of file +}
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