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Oracle® Fusion Middleware Web User Interface Developer's Guide for Oracle Application Development Framework
11g Release 1 (11.1.1.4.0)

Part Number B31973-08
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C Keyboard Shortcuts

This appendix describes the keyboard shortcuts that can be used instead of pointing devices.

This appendix includes the following sections:

C.1 About Keyboard Shortcuts

Keyboard shortcuts provide an alternative to pointing devices for navigating the page. There are five types of keyboard shortcuts that can be provided in BLAF Plus applications:

Keyboard shortcuts are not required for accessibility. Users should be able to navigate to all parts and functions of the application using the Tab and arrow keys, without using any keyboard shortcuts. Keyboard shortcuts merely provide an additional way to access a function quickly.

C.2 Tab Traversal

Tab traversal allows the user to move the focus through different UI elements on a page.

All active elements of the page are accessible by Tab traversal, that is, by using the Tab key to move to the next control and Shift+Tab to move to the previous control. In most cases, when a control has focus, the action can then be initiated by pressing Enter.

Some complex components use arrow keys to navigate after the component receives focus using the Tab key.

C.2.1 Tab Traversal Sequence on a Page

Default Tab traversal order for a page is from left to right and from top to bottom, as shown in Figure C-1. Tab traversal in a two-column form layout does not follow this pattern, but rather follows a columnar pattern. On reaching the bottom, the tab sequence repeats again from the top.

Figure C-1 Tab Traversal Sequence on a Page

Tab traversal sequence on a page

Avoid using custom code to control the tab traversal sequence within a page, as the resulting pages would be too difficult to manage and would create an inconsistent user experience across pages in an application and across applications.

To improve keyboard navigation efficiency for users, you should include a skip navigation link at the top of the page, which should navigate directly to the first content-related tab stop.

C.2.2 Tab Traversal Sequence in a Table

The Tab traversals in a table establish a unique row-wise navigation pattern when the user presses the Tab key several times to navigate sequentially from one cell to another. When the user presses Enter, the focus moves to the next row, to follow the same pattern. The navigational sequence begins and ends in the same column as in the previous row.

Figure C-2 shows an example of a tab traversal sequence in a table.

Figure C-2 Tab Traversal Sequence in a Table

Tab Traversal Sequence in a table

In Figure C-2, the user has navigated the rows in the following way:

  1. The user clicks a cell in the inputText column, giving it focus and making it editable.

    Because the Tab key is used to navigate, the inputText column is recognized as the starting column for the navigation pattern.

  2. The user presses the Tab key and moves the focus in the same row to the cell of the * Required field column.

  3. The user presses the Tab key and moves the focus in the same row to the cell of the inputComboListOf column.

  4. The user presses the Enter key and the focus shifts to the inputText column in the next row.

    Pressing the Enter key sets a navigation pattern, based on the first set of Tab keys, which is followed in subsequent rows.

    Note:

    The navigational pattern is not recognized if you use arrow keys to navigate from one cell to another.

C.3 Accelerator Keys

Accelerator keys bypass menu and page navigation and perform actions directly. Accelerator keys are sometimes called hot keys. Common accelerator keys in a Windows application, such as Internet Explorer, are Ctrl+O for Open and Ctrl+P for Print.

Accelerator keys are single key presses (for example, Enter and Esc) or key combinations (for example, Ctrl+A) that initiate actions immediately when activated. A key combination consists of a metakey and an execution key. The metakey may be Ctrl (Command on a Macintosh keyboard), Alt (Option on a Macintosh keyboard), or Shift. The execution key is the key that is pressed in conjunction with the metakey.

BLAF Plus components have some built-in accelerator keys. Custom accelerator keys are supported only in menus, as shown in Figure C-3.

Figure C-3 Accelerator Keys in a Menu

Accelerator key for a menu.

When defining accelerator keys, you must follow these guidelines:

Note:

In Windows, users have the ability to assign a Ctrl+Alt+character key sequence to an application desktop shortcut. In this case, the key assignment overrides browser-level key assignments. However, this feature is rarely used, so it can generally be ignored.

Certain BLAF Plus components have built-in accelerator keys that apply when the component has focus. Of these, some are reserved for page-level components, whereas others may be assigned to menus when the component is not used on a page. Table C-1 lists the accelerator keys that are already built into page-level BLAF Plus components. You must not use these accelerator keys at all.

Table C-1 Accelerator Keys Reserved for Page-Level Components

Accelerator Key Used In Function

Ctrl+Alt+R

Active Data

Check for updated data

Ctrl+Alt+W

Menu

Messaging

Secondary Windows

Toggle focus between popup and primary window

Ctrl+Alt+P

Splitter

Give focus to splitter bar


The menu commands take precedence if they are on the same page as page-level components, and have the same accelerator keys. For this reason, you must not use the accelerator keys listed in Table C-2 in menus when the related component also appears on the same page.

Table C-2 Accelerator Keys Assigned to Optional Components

Accelerator Key Component Function

Ctrl+Alt++

Rich Text Editor

Superscript

Ctrl+Alt+-

Rich Text Editor

Subscript

Ctrl+/

Hierarchy Viewer

Switch content panel

Ctrl+Alt+0. . .Ctrl+Alt+5

Hierarchy Viewer

Switch diagram layout

Ctrl+5

Rich Text Editor

Strikethrough

Ctrl+A

File Upload

Multi-Select Choice List

Multi-Select List Box

Pivot Table

Rich Text Editor

Spin Box

Text Box & Area

Table

Select all

Ctrl+B

Rich Text Editor

Boldface

Ctrl+Alt+C

Rich Text Editor

Toggle source code editing

Ctrl+E

Rich Text Editor

Center alignment

Ctrl+H

Rich Text Editor

Create hyperlink

Ctrl+Shift+H

Rich Text Editor

Remove hyperlink

Ctrl+I

Rich Text Editor

Italics

Ctrl+J

Rich Text Editor

 

Ctrl+L

Rich Text Editor

Full-justified alignment

Ctrl+Shift+L

Rich Text Editor

Left alignment

Ctrl+Alt+L

Rich Text Editor

Numbered list

Ctrl+M

Rich Text Editor

Increase indentation

Ctrl+Shift+M

Rich Text Editor

Decrease indentation

Ctrl+Alt+M

Gantt

Pivot Table

Table

Tree

Tree Table

Launch context menu

Ctrl+R

Rich Text Editor

Right alignment

Ctrl+Alt+R

Rich Text Editor

Toggle rich text editing

Ctrl+Shift+S

Rich Text Editor

Clear text styles

Ctrl+U

Rich Text Editor

Underline

Ctrl+Y

Rich Text Editor

Redo

Ctrl+Z

Rich Text Editor

Undo

Ctrl+Shift+^

Hierarchy Viewer

Tree

Tree Table

Go up one level

Esc

Table

Reverse all edits of the row and disable edit mode

Enter

Shift+Enter

Table

Navigate to the next or previous cell of the column


C.4 Accelerator Keys for ADF Data Visualization Components

ADF Data Visualization components provide graphical and tabular capabilities for displaying and analyzing data. Table C-3 lists the accelerator keys assigned to ADF Data Visualization components: Gantt chart components, hierarchy viewer components, pivot table components, and geographic map components. For more information about ADF Data Visualization components, see Chapter 23, "Introduction to ADF Data Visualization Components."

Table C-3 Accelerator Keys Assigned to ADF Data Visualization Components

Accelerator Key Components Function

Arrow Left

Arrow Right

List region of all Gantt chart types

Chart region of project Gantt

Chart region of scheduling Gantt

Chart region of resource utilization Gantt

ADF geographic map

ADF hierarchy viewer - nodes

Pivot table

Pivot filter bar

Moves the focus.

If the focus is on the chart region of the scheduling Gantt component, the arrow key navigation selects the previous or next taskbar of the current row.

If the focus is on the time bucket of the resource utilization Gantt component, the arrow key navigation selects the previous or next time bucket in the current row.

If the focus is on the ADF geographic map, the arrow key navigation pans left or right by a small increment. Press the Home or End key to pan by a large increment.

If the focus is on the node component of the ADF hierarchy viewer component, press Ctrl+Arrow keys to move the focus left or right without selecting the component.

Arrow Up

Arrow Down

List region of all Gantt chart types

Chart region of project Gantt

Chart region of scheduling Gantt

Chart region of resource utilization Gantt

ADF geographic map

ADF hierarchy viewer - nodes

Pivot table

Pivot filter bar

Moves the focus.

If the focus is on the chart region of project Gantt, the arrow key navigation selects previous or next row.

If the focus is on the chart region taskbar of the scheduling Gantt component, the arrow key navigation selects the first taskbar of the previous row or the next row.

If the focus is on the time bucket of the resource utilization Gantt component, the arrow key navigation selects the time bucket of the previous row or next row.

If the focus is on the ADF geographic map component, the arrow key navigation pans up or down by a small increment.

If the focus is on the node component of the ADF hierarchy viewer, press the Ctrl+Arrow keys to move the focus up or down without selecting the component.

Page Up

Page Down

ADF geographic map

ADF hierarchy viewer - diagram

If the focus is on the ADF geographic map component, the page key navigation pans up or down by a large increment.

If the focus is on the diagram of the ADF hierarchy viewer component, press and hold the Page Up or Page Down keys to pan up or down continuously. Press Ctrl+Page Up or Ctrl+Page Down to pan left or right continuously.

+

ADF geographic map

ADF hierarchy viewer - diagram

Increases the zoom level.

If the focus is on the diagram of the ADF hierarchy viewer component, press number keys 1 through 5 to zoom from 10% through 100%. Press 0 to zoom the diagram to fit within available space.

-

ADF geographic map

ADF hierarchy viewer - diagram

Decreases the zoom level.

If the focus is on the diagram of the ADF hierarchy viewer component, press number keys 1 through 5 to zoom from 10% through 100%. Press 0 to zoom the diagram to fit within available space.

Ctrl+Alt+M

All Gantt chart types

Pivot table

Launches the context menu.

Home

ADF hierarchy viewer - nodes

Moves the focus to first node in the current level.

End

ADF hierarchy viewer - nodes

Moves the focus to last node in the current level.

Ctrl + Home

ADF hierarchy viewer - nodes

Moves the focus and select the root node.

<

ADF hierarchy viewer - nodes

Switches to the active node's previous panel

>

ADF hierarchy viewer - nodes

Switches to the active node's next panel.

Ctrl + /

ADF hierarchy viewer - nodes

Synchronize all nodes to display the active node's panel.

Ctrl+Shift+^

ADF Hierarchy viewer - nodes

Goes up one level.

Ctrl+/

ADF hierarchy viewer - nodes

Switches the content panel.

Ctrl+Alt+0

ADF hierarchy viewer - diagrams

Centers the active node and zooms the diagram to 100%.

Tab

ADF hierarchy viewer - nodes

Pivot table

Pivot filter bar

Moves the focus through the elements.

Esc

ADF hierarchy viewer - nodes

Returns the focus to the containing node.

If the focus is on the search panel, close the panel.

Closes the Detail window, if it appears while hovering over a node.

Spacebar

ADF hierarchy viewer - nodes

Pivot table

Pivot filter bar

Selects the active node. Press Ctrl+Spacebar to toggle selection of the active node, and to select multiple nodes.

Enter

ADF hierarchy viewer - nodes

Pivot table

Pivot filter bar

Isolates and selects the active node. Press Shift+Enter to toggle the state of the node.

/

ADF hierarchy viewer - nodes

Toggles control panel state.

Ctrl+F

ADF hierarchy viewer - nodes

If the ADF hierarchy viewer component is configured to support search functionality, open the search panel.

Ctrl+Alt+1 through Ctrl+Alt+5

ADF hierarchy viewer - nodes

Switches diagram layout.

Ctrl+Alt+Arrow keys

Pivot table

Pivot filter bar

Changes the layout by pivoting a row, column, or filter layer to a new location. Use Ctrl+Alt+Arrow keys to perform the following:

  • Provide visual feedback, showing potential destination of the pivot operation, if the header layer is selected.

  • Select different destination locations.

  • Move or swap the selected header layer to the specified destination.


Some ADF Data Visualization components provide some common functions to the end user through the menu bar, toolbar, context menu, or Task Properties dialog. You may choose to show, hide, or replace these functionalities. If you hide or replace any functionality, you must provide alternate keyboard accessibility to those functions.

C.5 Access Keys

Access keys move the focus to a specific UI element.

Access keys relocate cursor or selection focus to specific interface components. Every component on the page with definable focus is accessible by tab traversal (using Tab and Shift+Tab); however, access keys provide quick focus to frequently used components. Access keys must be unique within a page.

The result of pressing an access key depends on the associated element and the browser:

Access keys are triggered with Shift+Alt+mnemonic in Firefox and Alt+mnemonic in Internet Explorer.

If the mnemonic is present in the text of the component label or prompt (for example, a menu name, button label, or text box prompt), it is visible in the interface as an underlined character, as shown in Figure C-4. If the character is not part of the text of the label or prompt, it is not displayed in the interface.

Figure C-4 Access Key

Access key for a component.

When defining access keys, you must follow these guidelines:

Note:

For translation reasons, you should specify access keys as part of the label. For example, to render the label Cancel with the C access key, it is recommended to use &Cancel in the textAndAccessKey property (where the ampersand denotes the mnemonic) rather than C in the accessKey property. Product suites must ensure that access keys are not duplicated within each supported language and do not override access keys within each supported browser unless explicitly intended.

C.6 Default Cursor or Focus Placement

The default cursor puts the initial focus on a component so that keyboard users can start interacting with the page without excessive navigation.

Focus refers to a type of selection outline that moves through the page when users press the tab key or access keys. When the focus moves to a field where data can be entered, a cursor appears in the field. If the field already contains data, the data is highlighted. In addition, after using certain controls (such as a list of values (LOV) or date-time picker), the cursor or focus placement moves to specific locations predefined by the component.

During the loading of a standard BLAF Plus page, focus appears on the first focusable component on the page — either an editable widget or a navigation component. If there is no focusable element on the page, focus appears on the browser address field.

When defining default cursor and focus placement, you should follow these guidelines:

C.7 The Enter Key

The Enter key triggers an action when the cursor is in certain fields or when focus is on a link or button. You should use the Enter key to activate a common commit button, such as in a Login form or in a dialog.

Many components have built-in actions for the Enter key. Some examples include: