using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Media.Imaging;
using System.Xml.Linq;
using System.Net.Http;
namespace PhotoViewer
{
classPhotoItem : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
protectedvoid OnPropertyChanged(string propertyName)
{
if (this.PropertyChanged != null)
{
this.PropertyChanged(this,
new PropertyChangedEventArgs(propertyName));
}
}
private PhotoCollection _collection;
public PhotoCollection Collection
{
get
{
returnthis._collection;
}
set
{
if (this._collection != value)
{
this._collection = value;
this.OnPropertyChanged(“Collection”);
}
}
}
private String _category = String.Empty;
public String Category
{
get
{
returnthis._category;
}
set
{
if (this._category != value)
{
this._category = value;
this.OnPropertyChanged(“Category”);
}
}
}
privateString _title = String.Empty;
publicString Title
{
get
{
returnthis._title;
}
set
{
if (this._title != value)
{
this._title = value;
this.OnPropertyChanged(“Title”);
}
}
}
privateString _description = String.Empty;
publicString Description
{
get
{
returnthis._description;
}
set
{
if (this._description != value)
{
this._description = value;
this.OnPropertyChanged(“Description”);
}
}
}
privateString _owner = String.Empty;
publicString Owner
{
get
{
returnthis._owner;
}
set
{
if (this._owner != value)
{
this._owner = value;
this.OnPropertyChanged(“Owner”);
}
}
}
privateString _dateTaken;
publicString DateTaken
{
get
{
returnthis._dateTaken;
}
set
{
if (this._dateTaken != value)
{
this._dateTaken = value;
this.OnPropertyChanged(“DateTaken”);
}
}
}
privateImageSource _image = null;
privateUri _imageBaseUri = null;
privateString _imagePath = null;
publicImageSource Image
{
get
{
if (_image == null && _imageBaseUri != null &&
_imagePath !=
null)
{
_image =
newBitmapImage(newUri(_imageBaseUri, _imagePath));
}
returnthis._image;
}
set
{
if (this._image != value)
{
this._image = value;
this._imageBaseUri = null;
this._imagePath = null;
this.OnPropertyChanged(“Image”);
}
}
}
publicvoid SetImage(Uri baseUri, String path)
{
_image =
null;
_imageBaseUri = baseUri;
_imagePath = path;
this.OnPropertyChanged(“Image”);
}
privatestring _url = string.Empty;
publicstring Url
{
get
{
returnthis._url;
}
set
{
if (this._url != value)
{
this._url = value;
this.OnPropertyChanged(“Url”);
}
}
}
}
classPhotoCollection : PhotoItem, IGroupInfo
{
publicObject Key
{
get { return Title; }
}
privateList<PhotoItem> _itemCollection = newList<PhotoItem>();
publicvoid Add(PhotoItem item)
{
_itemCollection.Add(item);
}
publicIEnumerator<Object> GetEnumerator()
{
return _itemCollection.GetEnumerator();
}
System.Collections.
IEnumerator
System.Collections.
IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
}
classPhotoDataSource
{
publicList<PhotoCollection> GroupedCollections { get; privateset; }
privatevoid AddCollection(String category, String title,
String description, Uri baseUri, String imagePath)
{
var collection = newPhotoCollection();
collection.Category = category;
collection.Title = title;
collection.Description = description;
collection.SetImage(baseUri, imagePath);
GroupedCollections.Add(collection);
}
privatevoid AddItem(String category, String title, String description,
String owner, String dateTaken, Uri baseUri, String imagePath)
{
PhotoCollection lastCollection = GroupedCollections.LastOrDefault() as
PhotoCollection;
var item = newPhotoItem();
item.Category = category;
item.Title = title;
item.Description = description;
item.Owner = owner;
item.DateTaken = dateTaken;
item.SetImage(baseUri, imagePath);
item.Collection = lastCollection;
if (lastCollection != null)
{
lastCollection.Add(item);
}
}
public PhotoDataSource(Uri baseUri)
{
GroupedCollections = newList<PhotoCollection>();
AddCollection( “Pike Place Market”, ” Pike Place Market “,
“Pike Place Market is a public market overlooking the Elliott Bay waterfront in Seattle, Washington, United States. The Market opened August 17, 1907, and is one of the oldest continually operated public farmers’ markets in the United States. It is a place of business for many small farmers, craftspeople and merchants. Named after the central street, Pike Place runs northwest from Pike Street to Virginia Street, and remains one of Seattle’s most popular tourist destinations.”,
baseUri, “Images/PikePlaceMarket.jpg”);
AddItem(“Pike Place Market”, “Picture 1”,
“A picture of Pike Place Market”,
string.Empty, string.Empty,
baseUri, “Images/PikePlaceMarket.jpg”);
AddItem(“Pike Place Market”, “Picture 2”,
“A picture of Pike Place Market”,
string.Empty, string.Empty,
baseUri, “Images/PikePlaceMarket.jpg”);
AddItem( “Pike Place Market”, “Picture 3”,
“A picture of Pike Place Market”,
string.Empty, string.Empty,
baseUri, “Images/PikePlaceMarket.jpg”);
//AddPhotos(“Pike Place Market”, 1);
//AddPhotos(“Pike Place Market”, 2);
AddCollection( “Space Needle”, ” Space Needle “,
“The Space Needle is a tower in Seattle, Washington and is a major landmark of the Pacific Northwest region of the United States and a symbol of Seattle. Located at the Seattle Center, it was built for the 1962 World’s Fair. The Space Needle features an observation deck at 520 feet (160 m), and a gift shop with the rotating SkyCity restaurant at 500 feet (150 m).[5] From the top of the Needle, one can see not only the Downtown Seattle skyline, but also the Olympic and Cascade Mountains, Mount Rainier, Mount Baker, Elliott Bay and surrounding islands.”,
baseUri, “Images/SpaceNeedle.jpg”);
//AddPhotos(“Space Needle”, 1);
//AddPhotos(“Space Needle”, 2);
AddItem( “Space Needle”, “Picture 1”,
“A picture of the Space Needle”,
string.Empty, string.Empty,
baseUri, “Images/SpaceNeedle.jpg”);
AddItem( “Space Needle”, “Picture 2”,
“A picture of the Space Needle”,
string.Empty, string.Empty,
baseUri, “Images/SpaceNeedle.jpg”);
AddItem(“Space Needle”, “Picture 3”,
“A picture of the Space Needle”,
string.Empty, string.Empty,
baseUri, “Images/SpaceNeedle.jpg”);
AddItem( “Space Needle”, “Picture 4”,
“A picture of the Space Needle”,
string.Empty, string.Empty,
baseUri, “Images/SpaceNeedle.jpg”);
AddCollection( “Pioneer Square”, ” Pioneer Square “,
“Pioneer Square was once the heart of the city: Seattle’s founders settled there in 1852, following a brief six-month settlement at Alki Point on the far side of Elliott Bay. The early structures in the neighborhood were mostly wooden, and nearly all burned in the Great Seattle Fire of 1889. By the end of 1890, dozens of brick and stone buildings had been erected in their stead; to this day, the architectural character of the neighborhood derives from these late 19th century buildings, mostly examples of Richardsonian Romanesque.”,
baseUri,“Images/PioneerSquare.jpg”);
//AddPhotos(“Pioneer Square”, 1);
//AddPhotos(“Pioneer Square”, 2);
AddItem(“Pioneer Square”, “Picture 1”,
“A picture of Pioneer Square”,
string.Empty, string.Empty,
baseUri, “Images/PioneerSquare.jpg”);
AddCollection(“Snoqualmie Falls”, ” Snoqualmie Falls “,
“Snoqualmie Falls is a 268 ft (82 m) waterfall on the Snoqualmie River between Snoqualmie and Fall City, Washington, USA. It is one of Washington’s most popular scenic attractions, but is perhaps best known internationally for its appearance in the cult television series Twin Peaks. More than 1.5 million visitors come to the Falls every year, where there is a two acre (8,000 m²) park, an observation deck, and a gift shop.”,
baseUri, “Images/SnoqualmieFalls.jpg”);
//AddPhotos(“Snoqualmie Falls”, 1);
//AddPhotos(“Snoqualmie Falls”, 2);
AddItem(“Snoqualmie Falls”, “Picture 1”,
“A picture of Snoqualmie Falls”,
string.Empty, string.Empty,
baseUri, “Images/SnoqualmieFalls.jpg”);
AddItem(“Snoqualmie Falls”, “Picture 2”,
“A picture of Snoqualmie Falls”,
string.Empty, string.Empty,
baseUri, “Images/SnoqualmieFalls.jpg”);
AddItem( “Snoqualmie Falls”, “Picture 3”,
“A picture of Snoqualmie Falls”,
string.Empty, string.Empty,
baseUri, “Images/SnoqualmieFalls.jpg”);
AddItem(“Snoqualmie Falls”, “Picture 4”,
“A picture of Snoqualmie Falls”,
string.Empty, string.Empty,
baseUri, “Images/SnoqualmieFalls.jpg”);
AddCollection(“About Me”, ” About Me “, “Hi,Myself Anindita Basak.Senior Software Engineer by role.”,
baseUri, “Images/me.jpg”);
AddItem(“About Me”, “About Me”,
“Hi,Myself Anindita Basak.Senior Software Engineer by profession.”,
string.Empty, string.Empty,
baseUri, “Images/me.jpg”);
AddItem(“About Me”, “About Me”,
“Hi,Myself Anindita Basak.Senior Software Engineer by profession.”,
string.Empty, string.Empty,
baseUri, “Images/me.jpg”);
}
}
}
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