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DirectoryDialog
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- Prompts the user to navigate the file system
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and select a directory Valid styles include SWTOPEN for selecting an existing directory and SWTSAVE for specifying a new directory
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FileDialog
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- Prompts the user to navigate the file system and
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select or enter a file name Valid styles include SWTOPEN for selecting an existing file and SWTSAVE for specifying a new file
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FontDialog
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Dialogs
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SWTICON_QUESTION
SWTICON_WARNING
SWTICON_WORKING
Valid button styles include: SWTOK SWTOK | SWTCANCEL SWTYES | SWTNO SWTYES | SWTNO | SWTCANCEL SWTRETRY | SWTCANCEL
TT 11 Dialogs and Wizards
SWTABORT | SWTRETRY | SWTIGNORE
PrintDialog
- Prompts the user to select a printer and various
print-related parameters prior to starting a print job
With any of these SWT dialogs, one of the following modal styles can be specified:
SWTMODELESS
- Modeless dialog behavior - Modal behavior with respect to the parent
SWTPRIMARY_MODAL
shell
SWTAPPLICATION_MODAL
- Modal behavior with respect to the ap-
plication
SWTSYSTEM_MODAL
- Modal behavior with respect to the entire
system
1113 Common JFace Dialogs There are many JFace dialogs that can be either instantiated directly or reused via subclassing:
Dialogs
Abstract dialogs:
AbstractElementListSelectionDialog
- An abstract dialog to se-
lect elements out of a list of elements
IconAndMessageDialog
- The abstract superclass of dialogs that
have an icon and a message as the first two widgets
SelectionDialog
- An abstract dialog for displaying and return-
ing a selection
SelectionStatusDialog
- An abstract base class for dialogs with
a status bar and ok/cancel buttons The status message must be passed over as StatusInfo object and can be an error, warning or ok The OK button is enabled or disabled depending on the status
TitleAreaDialog
- An abstract dialog having a title area for dis-
playing a title and an image as well as a common area for displaying a description, a message, or an error message
File dialogs:
FileSelectionDialog
- A standard file selection dialog that so-
TT 11 Dialogs and Wizards
licits a list of files from the user The getResult() method returns the selected files
SaveAsDialog
- A standard "Save As" dialog that solicits a path
from the user The getResult() method returns the path Note that the folder at the specified path might not exist and might need to be created
Information dialogs:
ErrorDialog
- A dialog to display one or more errors to the
user, as contained in an IStatus object If an error contains additional detailed information then a Details button is automatically supplied, which shows or hides an error details viewer when pressed by the user
MessageDialog
- A dialog for showing messages to the user
Resource dialogs:
ContainerSelectionDialog
- A standard selection dialog that so-
licits a container resource from the user The getResult() method returns the selected container resource
Dialogs
GotoResourceDialog
- Shows a list of resources to the user with
a text entry field for a string pattern used to filter the list of resources
NewFolderDialog
- A dialog used to create a new folder The
folder can optionally be linked to a file system folder
ProjectLocationMoveDialog
- A dialog used to select the location
of a project for moving
ProjectLocationSelectionDialog
- A dialog used to select the
name and location of a project for copying
ResourceListSelectionDialog
- Shows a list of resources to the
user with a text entry field for a string pattern used to filter the list of resources
ResourceSelectionDialog
- A standard resource selection dialog
that solicits a list of resources from the user The getResult()
method returns the selected resources - A SelectionDialog that allows the user to
TypeFilteringDialog
select a file editor
TT 11 Dialogs and Wizards
Selection dialogs:
CheckedTreeSelectionDialog
- A dialog to select elements out of
a tree structure
ElementListSelectionDialog
- A dialog to select elements out of
a list of elements
ElementTreeSelectionDialog
- A dialog to select elements out of
a tree structure
ListDialog
- A dialog that prompts for one element out of a list
of elements Uses IStructuredContentProvider to provide the elements and ILabelProvider to provide their labels
ListSelectionDialog
- A standard dialog that solicits a list of se-
lections from the user This class is configured with an arbitrary data model represented by content and label provider objects The getResult() method returns the selected elements
TwoPaneElementSelector
- A list selection dialog with two panes
Duplicated entries will be folded together and are dis-
Dialogs
played in the lower pane (qualifier)
YesNoCancelListSelectionDialog
- A list selection dialog that
also allows the user to select no as a result
Miscellaneous dialogs:
InputDialog
- A simple input dialog for soliciting an input
string from the user
ProgressMonitorDialog
- A modal dialog that displays progress
during a long running operation (see Section 94)
TaskPropertiesDialog
- Shows the properties of a new or exist-
ing task, or a problem
WizardDialog
- A dialog displaying a wizard and implementing
the IWizardContainer interface (see Section 1123)
TT 11 Dialogs and Wizards
1114 Creating a JFace dialog The default implementation of the Dialog class creates a dialog containing a content area for dialog specific controls and a button bar below containing OK and Cancel buttons (see Figure 11-1)
Figure 11-1 Default dialog structure
Typically, new dialogs are created by subclassing
orgeclipsejfacedialogsDialog
and overriding a handful of methods to
customize the dialog for a particular purpose
buttonPressed(int)
- Called when a button created by the cre-
ateButton
method is clicked by the user The default im-
Dialogs
plementation calls okPressed() if the OK button is pressed and cancelPressed() if the Cancel button is pressed
cancelPressed()
- Called when the user presses the Cancel but-
ton The default implementation sets the return code to
WindowCANCEL
and closes the dialog
close()
- Closes the dialog, disposes its shell, and removes the
dialog from its window manager (if it has one)
createButton(Composite, int, String, boolean)
- Creates and
returns a new button in the button bar with the given identifier and label This method is typically called from the
createButtonsForButtonBar
method
createButtonBar(Composite)
- Lays out a button bar and calls
the createButtonsForButtonBar method to populate it Subclasses may override createButtonBar or createButtonsForButtonBar
as necessary - Create buttons in the
createButtonsForButtonBar(Composite)
button bar The default implementation creates OK and
TT 11 Dialogs and Wizards
Cancel buttons in the lower right corner Subclasses may override this method to replace the default buttons, or extend this method to augment them using the createButton method
createContents(Composite)
- Creates and returns this dialog's
contents The default implementation calls createDialogArea
and createButtonBar to create the dialog area and but-
ton bar, respectively Subclasses should override these methods rather than createContents
createDialogArea(Composite)
- Creates and returns the content
area for the dialog above the button bar Subclasses typically call the superclass method and then add controls to the returned composite
okPressed()
- Called when the user presses the OK button
The default implementation sets the return code to WindowOK
and closes the dialog
open()
- Opens this dialog, creating it first if it has not yet
Dialogs
been created This method waits until the user closes the dialog, and then returns the dialog's return code A dialog's return codes are dialog-specific, although two standard return codes are predefined: WindowOK and WindowCANCEL setShellStyle(int)