Contacts Browser Example
Contacts Browser Example
Contacts Browser Example
Explanation of how to create a scrolling window listing contacts in
alphabetical order.
Introduction
This is a fully functional reference application for implementing scrolling contact
browsers using the #EBookClientCursor. With the cursor, the following features are
possible.
Display contacts in a configurable sort order
Sort by any #EContactField which conforms to #G_TYPE_STRING, this can be checked
with e_contact_field_type()
Minimal memory constraints
Only load into memory the contacts which are currently visible in the list
Filter search results on the fly
Set new search expressions generated with #EBookQuery on the fly. Refresh
the contact list at the current position without losing the current cursor
position.
Display the user's alphabet
Using interesting features from ICU libraries allow us to display
the user's alphabet, and implement features such as jumping to
a given letter in the user's alphabet.
The actual example code is built into the 'example' subdirectory of the Evolution Data Server
sources. In order to run the example, just launch the program and give it a path to a directory
full of vcards, bearing the .vcf filename extention.
Contact Browser
Below is an example of the contact browser code itself, the example program is
broken down into a couple of object classes which are also listed below.
The alphabetic navigator
This is a simple class which implements a vertical scroller and displays
various letters according to the currently active alphabet. The actual
interaction with #EBookClientCursor is done in the main contact browser
and this class is simply configured with the active alphabet.
The search entry
The search entry is placed at the top of the contacts browser,
this class simply implements a drop down box choosing the appropriate
search expression which should be used to filter the contacts
in the browser display window.
The contact slot
This is a very simple class who's only purpose is to display
contact related data, each entry in the list is a 'slot'
Creating addressbooks and loading vcards
This is the messy part of the example, here we take care
of creating a custom addressbook and populating it with
the contacts found in the directory given to the example.