Bidi Support In Dojo1.4

Overview of Bidi support in Dojo 1.4 Tomer Mahlin Bidi Development Lab Jerusalem

Agenda
Bidirectional scripts support – what is it ?
Aspects of Bidi support in Dojo
Configuration of Bidi support in Dojo
What works well ?
What is in development ?
References
Contacts

Bidirectional scripts support – what is it ?
A multitude of people use languages that are written in scripts which are bidirectional.
In bidirectional scripts the text is written from right to left while embedded numbers or segments of text in "western" scripts (Latin based ones such as English or French, Cyrillic based, or Greek) are written from left to right.
jerusalem NI EVIL I
The languages with a bidirectional script can be divided in two distinct groups using either the Arabic or the Hebrew script (there are a few more additional bidirectional scripts although with less users).
Bidi support stands for support for Arabic and Hebrew (and a few more) languages having bidirectional scripts.

Aspects of Bidi support in Dojo
Basic Bidi support
Support for proper display, typing, shaping (Arabic specific) and editing of Bidi text (leveraging the Unicode Bidi algorithm).
Support for controlling base text direction of text (LTR, RTL, Contextual)
Support for proper display of structured text including Bidi characters (i.e. File path, SQL query etc.)
Support for national calendars (i.e. Hebrew, Hijri Islamic)
Bidi enablement for translation to languages with bidirectional scripts
Support for proper GUI mirroring
Controlling component orientation on the widget level

Configuration of Bidi support in Dojo 1.4
Support for proper display of structured text including Bidi characters (1.a.ii)
The support is available via dojox.string.BidiComplex
dojo.require("dojox.string.BidiComplex"); var originalString = "c:ABCDEF" ; var displayString = dojox.string.BidiComplex.createDisplayString(originalString, "FILE_PATH"); Static case dojo.require("dojox.string.BidiComplex"); … dojox.string.BidiComplex.attachInput(document.getElementById("ctext"), "FILE_PATH"); Dynamic case Before: After: Before: After:

Support for national calendars (1.b)
The support is available via
dojox.date.hebrew.Date – calendar logic
dojox.date.hebrew.locale – parsing and formatting
dojox.date.hebrew.numerals – support for Hebrew numerals
dojo.require("dojox.date.hebrew"); dojo.require("dojox.date.hebrew.Date"); dojo.require("dojox.date.hebrew.locale"); dojo.require(“dojox.date.hebrew.numerals”); <input id="hebcal“ name="noDOMvalue“ value="2009-03-23“ type="text“ dojoType="dijit.form.DateTextBox“ datePackage = "dojox.date.hebrew “ lang="en" >

Support for national calendars (1.b)
lang = en lang = he (not mirrored GUI)

Controlled by dir attribute in the body
<body dir = ltr > <body dir = rtl >

What works well ?
Support for typing and display of Bidi text as part of Dojo widgets
Simple widgets (tree, slider etc.) are properly mirrored
Not mirrored slider Mirrored slider

Mirroring of complex widgets – dojox.charting.*
Not mirrored chart Mirrored chart

Mirroring of complex widgets – dojox.grid
Not mirrored grid Mirrored grid

Support for GUI orientation on the widget level
1 2 3 4

Controlling base text direction independently from GUI orientation
Displaying Bidi text in the not mirrored GUI Displaying English text in the mirrored GUI

References
Bidirectional script support: A primer: An introduction to the concepts and peculiarities of bidirectional scripts in computing systems, which forms a basis for understanding how those scripts are implemented in specific systems (http://www.ibm.com/developerworks/websphere/library/techarticles/bidi/bidigen.html).
Design document for display of complex expressions containing bidirectional text: A general design document created by Bidi architect Mati Allouche provides a way to resolve overwhelming majority of various types of expressions with a complex internal structure. https://bugs.eclipse.org/bugs/attachment.cgi?id=63835
Unicode Bidirectional Algorithm: The layout transformations use a bidirectional implicit algorithm that conforms to the Unicode Bidirectional Algorithm. http://www.unicode.org/reports/tr9/
Hebrew national calendar: Documentation of Hebrew national calendar in Dojo 1.4 is available from : http://docs.dojocampus.org/dojox/date/hebrew
Support for complex expressions: Documentation of support for complex expressions is available from http://api.dojotoolkit.org/jsdoc/1.3/dojox.string.BidiComplex

Contacts
GCoC – Globalization Center of Competence
Israel Gidali ( [email_address] ) – Manager of GCoC Complex Text Languages
Matitiahu Allouche ( [email_address] ) – Bidi architect
Waleed Oransa ( [email_address] ) – Technical team lead
Mohamed Mohie( [email_address] ) - Technical team lead
BDL – Bidi development lab (Jerusalem)
Eli Shapurov ( [email_address] ) – Manager of HCG
Tomer Mahlin ( [email_address] ) – HCG Architect
ACGC – Arabic Competence and Globalization Center (Cairo)
Tarek Abou Aly( [email_address] ) – Manager of ACGC

The END תודה רבה ! Thank you !

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Bidi Support In Dojo1.4

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Bidi Support In Dojo1.4 — Presentation Transcript