Blackbe;rry BROWSER VERSION 4.7.0 - FUNDAMENTALS GUIDE Manuel utilisateur

BlackBerry Browser

Version: 4.7.0

Fundamentals Guide

SWDT432285-432285-1205031032-001

Contents

1 Understanding the BlackBerry device browsing environment............................................................................................. 3

Characteristics of BlackBerry devices........................................................................................................................................... 3

BlackBerry Device Software version considerations.......................................................................................................... 4

Trackball.................................................................................................................................................................................. 4

Trackwheel.............................................................................................................................................................................. 5

Touch screen........................................................................................................................................................................... 5

Keyboard.................................................................................................................................................................................. 6

Network gateways and BlackBerry Browser configurations...................................................................................................... 8

The BlackBerry MDS Connection Service network gateway............................................................................................. 9

The BlackBerry Internet Service Browsing network gateway............................................................................................ 10

WAP network gateways......................................................................................................................................................... 11

2 BlackBerry Browser content support and features................................................................................................................. 13

BlackBerry Browser content support............................................................................................................................................ 13

BlackBerry Browser features.......................................................................................................................................................... 14

Network gateway features............................................................................................................................................................. 15

3 Content and network management in the BlackBerry Browser........................................................................................... 16

Content rendering........................................................................................................................................................................... 16

Browser content views........................................................................................................................................................... 16

Style sheets and CSS support............................................................................................................................................... 17

Form support........................................................................................................................................................................... 18

Table support.......................................................................................................................................................................... 19

Images..................................................................................................................................................................................... 20

Support for media streaming................................................................................................................................................ 21

Support for web feeds............................................................................................................................................................ 21

Script processing............................................................................................................................................................................. 22

JavaScript support and DOM access................................................................................................................................... 23

Support for AJAX and the XMLHttpRequest object........................................................................................................... 24

Content navigation......................................................................................................................................................................... 24

Page navigation...................................................................................................................................................................... 24

Link behavior........................................................................................................................................................................... 25

Navigation history in the BlackBerry Browser.................................................................................................................... 26

Bookmarks in the BlackBerry Browser................................................................................................................................. 27

Content storage.............................................................................................................................................................................. 27

Content caches....................................................................................................................................................................... 27

Cookie storage........................................................................................................................................................................ 28

4 Content optimization and delivery........................................................................................................................................... 29

Content optimization by the network gateway........................................................................................................................... 29

Content transcoding.............................................................................................................................................................. 29

Content preprocessing and filtering.................................................................................................................................... 30

Image optimization................................................................................................................................................................ 30

Progressive downloading of images..................................................................................................................................... 31

Pushed content delivery................................................................................................................................................................. 31

Pushed content supported by the BlackBerry MDS Connection Service........................................................................ 32

Pushed content supported by the BlackBerry Internet Service Browsing network gateway........................................ 33

Pushed content supported by WAP network gateways..................................................................................................... 34

5 Glossary......................................................................................................................................................................................... 35

6 Legal notice.................................................................................................................................................................................. 38

Understanding the BlackBerry device browsing

environment 1

When you develop web content for the BlackBerry® Browser, you must be aware of the web standards that the BlackBerry Browser

supports and determine how to develop web content that functions within those supported standards. However, to create an

effective browsing experience on the BlackBerry Browser, you must understand more than just what the BlackBerry Browser

supports. You must also be aware of the physical components of the wireless browsing environment in which the BlackBerry

Browser exists, and how they contribute, positively and negatively, to the user's wireless browsing experience. These physical

components include the following:

•The BlackBerry devices: BlackBerry device models have different versions of the BlackBerry Device Software, different screen

sizes, and different input methods.

•The wireless network: Wireless networks possess less bandwidth than wired networks or Wi-Fi® networks. Wireless networks

provide reduced data transfer rates, which results in increased network latency.

• The network gateway: Network gateways connect the wireless network, over which the BlackBerry devices communicate,

to the wired network, on which web servers and data systems exist. Different network gateways offer different support for

content optimization and content delivery strategies. The BlackBerry Browser is designed to communicate through several

network gateways.

Developing content with the wireless environment in mind can help you to work around some of the limitations inherent in

wireless browsing. With a greater understanding of theBlackBerry Browser, you can make the content development decisions

necessary to provide the functionality that users require, while also providing a positive wireless browsing experience.

Characteristics of BlackBerry devices

BlackBerry® devices come in a variety of sizes, shapes, and capabilities. Among the currently available BlackBerry devices that

might request your content, there is a range of software and hardware. The different hardware and software characteristics of

BlackBerry devices have an impact on the user's browsing experience, and might influence the decisions you make as you create

content for the BlackBerry® Browser.

BlackBerry devices can differ in the following ways:

• BlackBerry® Device Software version

• screen size

•input methods, including the navigation method (trackwheel or trackball) and the keypad (QWERTY or SureType® keypad)

The User-Agent header that accompanies every request from the BlackBerry Browser provides the BlackBerry device model

number, from which you can determine the physical characteristics of the BlackBerry device, and the version of the BlackBerry

Device Software that the requesting BlackBerry device is running.

Fundamentals Guide Understanding the BlackBerry device browsing environment

BlackBerry Device Software version considerations

The BlackBerry® Browser is a BlackBerry® Device Software application that is included with every BlackBerry device. The version

of the BlackBerry Device Software that is running on theBlackBerry device determines what content the BlackBerry Browser

supports and how the content is rendered.

Two generations of the BlackBerry Browser exist.

• The first generation of the BlackBerry Browser, included with BlackBerry Device Software version 4.5 or earlier, supports

simple web page presentations and wireless-specific content very well. In BlackBerry Device Software version 3.8 or later,

the BlackBerry Browser provides basic JavaScript® and CSS support. In an effort to make more of the web accessible to the

BlackBerry Browser, support for more complex presentation formats has been added over a number of releases. However,

the first generation of the BlackBerry Browser focuses on managing and mitigating the effects of the wireless network.

• The second-generation BlackBerry Browser was introduced in BlackBerry Device Software version 4.6. The BlackBerry

Browser rendering agent and JavaScript engine were completely redesigned to provide much greater support of existing

web standards. With full support for standards such as HTML 4.01, CSS 2.1, and DOM Level 2, the second generation of the

BlackBerry Browser has the ability to render most existing web content.

You should consider the BlackBerry Browser that is included with BlackBerry Device Software version 4.6 or later as functionally

distinct from the first generation of the BlackBerry Browser that is included with earlier BlackBerry Device Software versions.

When you design content for the BlackBerry device, you need to decide the version or versions of the BlackBerry Device Software

to target. Keep in mind that the number of BlackBerry device users who use a first generation BlackBerry Browser to access your

content is likely to be much larger than the number of users with a second generation of the browser. If you want to create content

that makes use of the presentation and scripting support offered by the second generation of the BlackBerry Browser, consider

also providing simplified content that targets BlackBerry device users who are browsing with a first generation of the BlackBerry

Browser.

For more specific information about what is supported with each version of the BlackBerry Device Software, see the BlackBerry

Browser HTML Reference, the BlackBerry Browser CSS Reference and the BlackBerry Browser JavaScript Reference.

Trackball

On BlackBerry® devices with a trackball, the trackball is the primary control for user navigation. Users can

• roll the trackball to move the cursor

• click the trackball to perform default actions or open a context menu

• click the trackball while pressing the Shift key to select objects

BlackBerry devices with a trackball also include a Menu key that is located to the left of the trackball. Users can press the Menu

key to open a full menu of available actions.

Fundamentals Guide Characteristics of BlackBerry devices

Trackwheel

BlackBerry® devices that precede the BlackBerry® Pearl™ 8100 Series use a trackwheel as the primary control for user navigation.

The trackwheel is located on the right side of the device.

Users can

• roll the trackwheel to move the cursor vertically

• roll the trackwheel while pressing the Alt key to move the cursor horizontally

• click the trackwheel to select objects or open the menu

Touch screen

On BlackBerry® devices with a SurePress™ touch screen, users use a finger to interact with the applications on the device. Users

type text and navigate screens by performing various actions on the touch screen.

In addition, users can click common actions on the shortcut bar that is located at the bottom of the screen. Or, users can press

the Menu key, which is located to the right of the Send key, to open a full menu of available actions.

On BlackBerry devices with a touch screen, users can perform the following actions:

Action Result

touch the screen lightly This action highlights an item or places the cursor in a specific location. It is

equivalent to rolling the trackball or trackwheel to highlight an item or place the

cursor.

Inapplicationsthatsupportafull-screenview,suchasBlackBerry®Maps,thisaction

hides the banner and shortcut bar.

On the shortcut bar, this action displays a tooltip that describes the action that the

icon represents.

touch the screen twice quickly On a web page, map, picture, or presentation attachment, this action zooms in to

the web page, map, picture, or presentation attachment.

click (press) the screen This action invokes an action. For example, when users click an item in a list, the

screen that is associated with the item appears. This action is equivalent to clicking

the trackball or trackwheel.

On a map, picture, or presentation attachment, this action zooms in to the map,

picture, or presentation attachment. On a web page, this action zooms in to the

web page or follows a link.

Fundamentals Guide Characteristics of BlackBerry devices

Action Result

slide a finger up or down quickly on the

screen

Sliding a finger up quickly displays the next screen. Sliding a finger down quickly

displays the previous screen.

When the keyboard appears, sliding a finger down quickly hides the keyboard and

displays the shortcut bar.

slide a finger to the left or right quickly

on the screen

This action displays the next or previous picture or message, or the next or previous

day, week, or month in a calendar.

hold a finger on an item Holding a finger on the progress bar while a song or video is playing fast forwards

or rewinds the song or video.

In a text field, this action displays an empty rectangle cursor to help users position

the cursor more accurately in a text field.

touch and drag an item on the screen This action moves the content on the screen in the corresponding direction. For

example, when users touch and drag a menu item, the list of menu items moves in

the same direction.

In a text field or in Month view in a calendar, this action moves the empty rectangle

cursor in the same direction.

touch the screen in two locations at the

same time

This action highlights the text between the two locations or the list of items, such

as messages, between the two locations. To add or remove text or items from the

selection, users can touch the screen at another location.

press the Escape key This action cancels a selection.

On a web page, map, or picture, this action zooms out one level. Users can press

the Escape key twice to zoom back to the original view.

Keyboard

Users use the keyboard primarily to type text. On BlackBerry® devices with a trackwheel or trackball, users can also use the

keyboard to move around a screen (for example, to move around a map). However, navigation using the keyboard should always

be an alternative to navigation using the trackball or trackwheel.

BlackBerry devices with a trackwheel or trackball have either a QWERTY keyboard or SureType® keyboard. Both types of keyboard

include character keys and modifier keys. Character keys send a character to the BlackBerry device and include text keys, the

Menu key, and the Escape key. A modifier key alters the functionality of character keys. Modifier keys include the Shift key and

the Alt key.

Fundamentals Guide Characteristics of BlackBerry devices

QWERTY keyboard

The QWERTY keyboard provides users with a keyboard that is similar to the keyboard on a computer. Users type as they would

on a computer keyboard except that numbers and symbols are located in different places.

To type common symbols, users press the Alt key and the appropriate character key. To type other symbols, users press the Symbol

key. When users press a modifier key, a typing mode indicator appears in the upper-right corner of the screen.

SureType keyboard

BlackBerry® devices with SureType® technology integrate a traditional phone keypad and a familiar QWERTY-style keyboard

with intuitive software. SureType technology is designed to predict words as users type them.

Fundamentals Guide Characteristics of BlackBerry devices

Users who have a BlackBerry device with SureType technology can type text using the SureType input method or the multi-tap

input method.

•When users use SureType technology, they press the letter key for each letter in a word once. For example, to type run, users

would press the ER key once, the UI key once, and the BN key once. As users type, a list of possible letter combinations and

words appears on the screen. SureType technology selects letter combinations or words from the list based on context. If

users type a word or letter combination (for example, a web address or an abbreviation) that SureType technology does not

recognize, users use the list that appears on the screen to build the word letter by letter. SureType technology is designed

to "learn" new words or letter combinations that users type and add them to a custom word list.

•When users use the multi-tap input method, they press a letter key once to type the first letter on the key and twice to type

the second letter. For example, to type run, users would press the ER key twice, the UI key once, and the BN key twice.

SureType technology is the default input method for most fields. Multi-tap is the default input method for phone number fields

and password fields. If users switch from using SureType technology to using the multi-tap input method, a typing indicator

appears in the upper-right corner of the screen to indicate the current input method.

Network gateways and BlackBerry Browser configurations

The BlackBerry® Browser can be configured to connect to the wireless network through one of three network gateways.

Network gateway Accessed by Protocol

BlackBerry MDS Connection Service BlackBerry Browser configuration HTTP/IPPP

BlackBerry Internet Service Browsing Internet Browser configuration HTTP/IPPP

Fundamentals Guide Network gateways and BlackBerry Browser configurations

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