public ChannelsViewModel()
{
System.Diagnostics.Debug.WriteLine("<ChannelsViewModel> New Instance");
// 将节目列表进行分组
Programs = new CollectionViewSource();
var currentPrograms = TelevisionService.Instance.AvaliablePrograms;
var channelAdapters = new List <ChannelTypeAdapter>();
foreach (var group in currentPrograms.GroupBy(program => program.ProgramInfo.Channel.Type))
{
// TODO: 进一步完善分组
var adapter = new ChannelTypeAdapter();
adapter.AddRange(group);
string typeName = "";
if (group.Key.HasFlag(ChannelType.Central))
{
typeName = "央视";
}
else if (group.Key.HasFlag(ChannelType.Beijing))
{
typeName = "北京";
}
else if (group.Key.HasFlag(ChannelType.Local))
{
typeName = "地方";
}
else if (group.Key.HasFlag(ChannelType.Special))
{
typeName = "特别";
}
else if (group.Key.HasFlag(ChannelType.Radio))
{
typeName = "广播";
}
if (group.Key.HasFlag(ChannelType.Hd))
{
typeName += "高清";
}
else if (group.Key.HasFlag(ChannelType.Standard))
{
typeName += "标清";
}
adapter.Type = typeName + "频道";
channelAdapters.Add(adapter);
}
Programs.Source = channelAdapters;
Programs.IsSourceGrouped = true;
// 新建Command的实例
LoveCurrentChannel = new DelegateCommand(() => {
if (IsCurrentChannelFavourite)
{
CollectionService.Instance.RemoveChannel(SelectedProgram.ProgramInfo.Channel);
}
else
{
CollectionService.Instance.AddChannel(SelectedProgram.ProgramInfo.Channel);
}
}, () => SelectedProgram != null);
LoveCurrentProgram = new DelegateCommand(() =>
{
if (IsCurrentProgramFavourite)
{
CollectionService.Instance.RemoveProgram(SelectedProgram.ProgramInfo);
}
else
{
CollectionService.Instance.AddProgram(SelectedProgram.ProgramInfo);
}
}, () => SelectedProgram != null);
// 监听收藏的变动
CollectionService.Instance.ChannelListChanged += (sender, e) =>
{
if (SelectedProgram != null)
{
IsCurrentChannelFavourite = CollectionService.Instance.CheckChannel(SelectedProgram.ProgramInfo.Channel);
}
};
CollectionService.Instance.ProgramListChanged += (sender, e) =>
{
if (SelectedProgram != null)
{
IsCurrentProgramFavourite = CollectionService.Instance.CheckProgram(SelectedProgram.ProgramInfo);
}
};
// 绑定功能按钮的Command
ToggleSidePanel = new DelegateCommand(() =>
{
VisualStateManager.GoToState(Host, _IsSidePanelExpaneded ? "SideCollapsed" : "SideExpanded", true);
_IsSidePanelExpaneded = !_IsSidePanelExpaneded;
}, () => SelectedProgram != null);
}
public ChannelsViewModel()
{
// 提供最新实例的访问
Instance = this;
// 将节目列表进行分组
Programs = new CollectionViewSource();
var currentPrograms = TelevisionService.Instance.AvaliablePrograms;
var channelAdapters = new List <ChannelTypeAdapter>();
foreach (var group in currentPrograms.GroupBy(program => program.ProgramInfo.Channel.Type))
{
// TODO: 进一步完善分组
var adapter = new ChannelTypeAdapter();
adapter.AddRange(group);
string typeName = "";
if (group.Key.HasFlag(ChannelType.Central))
{
typeName = "央视";
}
else if (group.Key.HasFlag(ChannelType.Beijing))
{
typeName = "北京";
}
else if (group.Key.HasFlag(ChannelType.Local))
{
typeName = "地方";
}
else if (group.Key.HasFlag(ChannelType.Special))
{
typeName = "特别";
}
else if (group.Key.HasFlag(ChannelType.Radio))
{
typeName = "广播";
}
if (group.Key.HasFlag(ChannelType.Hd))
{
typeName += "高清";
}
else if (group.Key.HasFlag(ChannelType.Standard))
{
typeName += "标清";
}
adapter.Type = typeName + "频道";
channelAdapters.Add(adapter);
}
Programs.Source = channelAdapters;
Programs.IsSourceGrouped = true;
AddChannelRecordTask = new DelegateCommand(async() =>
{
await new RecordDialog(SelectedProgram.ProgramInfo.Channel, SelectedSource).ShowAsync();
}); // 应该不存在无法执行的情况，就不执行检查了
// 监听收藏的变动
CollectionService.Instance.ChannelListChanged += (sender, e) =>
{
if (SelectedProgram != null)
{
IsCurrentChannelFavourite = CollectionService.Instance.CheckChannel(SelectedProgram.ProgramInfo.Channel);
}
};
CollectionService.Instance.ProgramListChanged += (sender, e) =>
{
if (SelectedProgram != null)
{
IsCurrentProgramFavourite = CollectionService.Instance.CheckProgram(SelectedProgram.ProgramInfo);
}
};
// 绑定功能按钮的Command
ToggleSidePanel = new DelegateCommand(() =>
{
VisualStateManager.GoToState(Host, _IsSidePanelExpaneded ? "SideCollapsed" : "SideExpanded", true);
_IsSidePanelExpaneded = !_IsSidePanelExpaneded;
}, () => SelectedProgram != null);
}