Class TrayDialog

All Implemented Interfaces:
Direct Known Subclasses:
AbstractSelectionDialog, CompareDialog, DialogMarkerProperties, FormDialog, ImportTypeDialog, PreferenceDialog, SaveablePartDialog, SelectionDialog, StatusDialog, TitleAreaDialog

public abstract class TrayDialog extends Dialog
A TrayDialog is a specialized Dialog that can contain a tray on its side. The tray's content is provided as a DialogTray.

It is recommended to subclass this class instead of Dialog in all cases except where the dialog should never show a tray. For example, dialogs which are very short, simple, and quick to dismiss (e.g. a message dialog with an OK button) should subclass Dialog.

Note: Trays are not supported on dialogs that use a custom layout on the Shell by overriding Window#getLayout().

See Also:
  • Constructor Details

    • TrayDialog

      protected TrayDialog(Shell shell)
      Creates a tray dialog instance. Note that the window will have no visual representation (no widgets) until it is told to open.
      shell - the parent shell, or null to create a top-level shell
    • TrayDialog

      protected TrayDialog(IShellProvider parentShell)
      Creates a tray dialog with the given parent.
      parentShell - the object that returns the current parent shell
  • Method Details

    • closeTray

      public void closeTray() throws IllegalStateException
      Closes this dialog's tray, disposing its widgets.
      IllegalStateException - if the tray was not open
    • handleShellCloseEvent

      protected void handleShellCloseEvent()
      Description copied from class: Window
      Notifies that the window's close button was pressed, the close menu was selected, or the ESCAPE key pressed.

      The default implementation of this framework method sets the window's return code to CANCEL and closes the window using close. Subclasses may extend or reimplement.

      handleShellCloseEvent in class Window
    • createButtonBar

      protected Control createButtonBar(Composite parent)
      Description copied from class: Dialog
      Creates and returns the contents of this dialog's button bar.

      The Dialog implementation of this framework method lays out a button bar and calls the createButtonsForButtonBar framework method to populate it. Subclasses may override.

      The returned control's layout data must be an instance of GridData.

      createButtonBar in class Dialog
      parent - the parent composite to contain the button bar
      the button bar control
    • createHelpControl

      protected Control createHelpControl(Composite parent)
      Creates a new help control that provides access to context help.

      The TrayDialog implementation of this method creates the control, registers it for selection events including selection, Note that the parent's layout is assumed to be a GridLayout and the number of columns in this layout is incremented. Subclasses may override.

      parent - the parent composite
      the help control
    • isHelpAvailable

      public boolean isHelpAvailable()
      Returns whether or not context help is available for this dialog. This can affect whether or not the dialog will display additional help mechanisms such as a help control in the button bar.
      whether or not context help is available for this dialog
    • getLayout

      protected Layout getLayout()
      The tray dialog's default layout is a modified version of the default Window layout that can accomodate a tray, however it still conforms to the description of the Window default layout.

      Note: Trays may not be supported with all custom layouts on the dialog's Shell. To avoid problems, use a single outer Composite for your dialog area, and set your custom layout on that Composite.

      getLayout in class Window
      a newly created layout or null for no layout
      See Also:
    • getTray

      public DialogTray getTray()
      Returns the tray currently shown in the dialog, or null if there is no tray.
      the dialog's current tray, or null if there is none
    • openTray

      public void openTray(DialogTray tray) throws IllegalStateException, UnsupportedOperationException
      Constructs the tray's widgets and displays the tray in this dialog. The dialog's size will be adjusted to accommodate the tray.
      tray - the tray to show in this dialog
      IllegalStateException - if the dialog already has a tray open
      UnsupportedOperationException - if the dialog does not support trays, for example if it uses a custom layout.
    • setHelpAvailable

      public void setHelpAvailable(boolean helpAvailable)
      Sets whether or not context help is available for this dialog. This can affect whether or not the dialog will display additional help mechanisms such as a help control in the button bar.
      helpAvailable - whether or not context help is available for the dialog
    • isDialogHelpAvailable

      public static boolean isDialogHelpAvailable()
      Tests if dialogs that have help control should show it all the time or only when explicitly requested for each dialog instance.
      true if dialogs that support help control should show it by default, false otherwise.
    • setDialogHelpAvailable

      public static void setDialogHelpAvailable(boolean helpAvailable)
      Sets whether JFace dialogs that support help control should show the control by default. If set to false, help control can still be shown on a per-dialog basis.
      helpAvailable - true to show the help control, false otherwise.