Package org.eclipse.jface.dialogs

Class PopupDialog

java.lang.Object
org.eclipse.jface.window.Window
org.eclipse.jface.dialogs.PopupDialog
All Implemented Interfaces:
IShellProvider
Direct Known Subclasses:
DebugPopup, KeyAssistDialog
public class PopupDialog extends Window
A lightweight, transient dialog that is popped up to show contextual or temporal information and is easily dismissed. Clients control whether the dialog should be able to receive input focus. An optional title area at the top and an optional info area at the bottom can be used to provide additional information.

Because the dialog is short-lived, most of the configuration of the dialog is done in the constructor. Set methods are only provided for those values that are expected to be dynamically computed based on a particular instance's internal state.

Clients are expected to override the creation of the main dialog area, and may optionally override the creation of the title area and info area in order to add content. In general, however, the creation of stylistic features, such as the dialog menu, separator styles, and fonts, is kept private so that all popup dialogs will have a similar appearance.

Since:
3.2

  • Field Details

    • HOVER_SHELLSTYLE

      public static final int HOVER_SHELLSTYLE
      Shell style appropriate for a simple hover popup that cannot get focus.
      See Also:

    • INFOPOPUP_SHELLSTYLE

      public static final int INFOPOPUP_SHELLSTYLE
      Shell style appropriate for an info popup that can get focus.
      See Also:

    • INFOPOPUPRESIZE_SHELLSTYLE

      public static final int INFOPOPUPRESIZE_SHELLSTYLE
      Shell style appropriate for a resizable info popup that can get focus.
      See Also:

  • Constructor Details

    • PopupDialog

      public PopupDialog(Shell parent, int shellStyle, boolean takeFocusOnOpen, boolean persistSize, boolean persistLocation, boolean showDialogMenu, boolean showPersistActions, String titleText, String infoText)
      Constructs a new instance of PopupDialog.
      Parameters:
      parent - The parent shell.
      shellStyle - The shell style.
      takeFocusOnOpen - A boolean indicating whether focus should be taken by this popup when it opens.
      persistSize - A boolean indicating whether the size should be persisted upon close of the dialog. The size can only be persisted if the dialog settings for persisting the bounds are also specified. If a menu action will be provided that allows the user to control this feature and the user hasn't changed that setting, then this flag is used as initial default for the menu.
      persistLocation - A boolean indicating whether the location should be persisted upon close of the dialog. The location can only be persisted if the dialog settings for persisting the bounds are also specified. If a menu action will be provided that allows the user to control this feature and the user hasn't changed that setting, then this flag is used as initial default for the menu. default for the menu until the user changed it.
      showDialogMenu - A boolean indicating whether a menu for moving and resizing the popup should be provided.
      showPersistActions - A boolean indicating whether actions allowing the user to control the persisting of the dialog bounds and location should be shown in the dialog menu. This parameter has no effect if showDialogMenu is false.
      titleText - Text to be shown in an upper title area, or null if there is no title.
      infoText - Text to be shown in a lower info area, or null if there is no info area.
      Since:
      3.4
      See Also:

  • Method Details

    • configureShell

      protected void configureShell(Shell shell)
      Description copied from class: Window
      Configures the given shell in preparation for opening this window in it.

      The default implementation of this framework method sets the shell's image and gives it a grid layout. Subclasses may extend or reimplement.

      Overrides:
      configureShell in class Window
      Parameters:
      shell - the shell

    • createContents

      protected Control createContents(Composite parent)
      The PopupDialog implementation of this Window method creates and lays out the top level composite for the dialog. It then calls the createTitleMenuArea, createDialogArea, and createInfoTextArea methods to create an optional title and menu area on the top, a dialog area in the center, and an optional info text area at the bottom. Overriding createDialogArea and (optionally) createTitleMenuArea and createTitleMenuArea are recommended rather than overriding this method.
      Overrides:
      createContents in class Window
      Parameters:
      parent - the composite used to parent the contents.
      Returns:
      the control representing the contents.

    • createDialogArea

      protected Control createDialogArea(Composite parent)
      Creates and returns the contents of the dialog (the area below the title area and above the info text area.

      The PopupDialog implementation of this framework method creates and returns a new Composite with standard margins and spacing.

      The returned control's layout data must be an instance of GridData. This method must not modify the parent's layout.

      Subclasses must override this method but may call super as in the following example: 

       Composite composite = (Composite) super.createDialogArea(parent);
 //add controls to composite as necessary
 return composite;
      Parameters:
      parent - the parent composite to contain the dialog area
      Returns:
      the dialog area control

    • getFocusControl

      protected Control getFocusControl()
      Returns the control that should get initial focus. Subclasses may override this method.
      Returns:
      the Control that should receive focus when the popup opens.

    • setTabOrder

      protected void setTabOrder(Composite composite)
      Sets the tab order for the popup. Clients should override to introduce specific tab ordering.
      Parameters:
      composite - the composite in which all content, including the title area and info area, was created. This composite's parent is the shell.

    • hasTitleArea

      protected boolean hasTitleArea()
      Returns a boolean indicating whether the popup should have a title area at the top of the dialog. Subclasses may override. Default behavior is to have a title area if there is to be a menu or title text.
      Returns:
      true if a title area should be created, false if it should not.

    • hasInfoArea

      protected boolean hasInfoArea()
      Returns a boolean indicating whether the popup should have an info area at the bottom of the dialog. Subclasses may override. Default behavior is to have an info area if info text was provided at the time of creation.
      Returns:
      true if a title area should be created, false if it should not.

    • createTitleMenuArea

      protected Control createTitleMenuArea(Composite parent)
      Creates the title and menu area. Subclasses typically need not override this method, but instead should use the constructor parameters showDialogMenu and showPersistAction to indicate whether a menu should be shown, and createTitleControl to to customize the presentation of the title.

      If this method is overridden, the returned control's layout data must be an instance of GridData. This method must not modify the parent's layout.

      Parameters:
      parent - The parent composite.
      Returns:
      The Control representing the title and menu area.

    • createTitleControl

      protected Control createTitleControl(Composite parent)
      Creates the control to be used to represent the dialog's title text. Subclasses may override if a different control is desired for representing the title text, or if something different than the title should be displayed in location where the title text typically is shown.

      If this method is overridden, the returned control's layout data must be an instance of GridData. This method must not modify the parent's layout.

      Parameters:
      parent - The parent composite.
      Returns:
      The Control representing the title area.

    • createInfoTextArea

      protected Control createInfoTextArea(Composite parent)
      Creates the optional info text area. This method is only called if the hasInfoArea() method returns true. Subclasses typically need not override this method, but may do so.

      If this method is overridden, the returned control's layout data must be an instance of GridData. This method must not modify the parent's layout.

      Parameters:
      parent - The parent composite.
      Returns:
      The control representing the info text area.
      See Also:

    • fillDialogMenu

      protected void fillDialogMenu(IMenuManager dialogMenu)
      Fill the dialog's menu. Subclasses may extend or override.
      Parameters:
      dialogMenu - The dialog's menu.

    • showDialogMenu

      protected void showDialogMenu()
      Show the dialog's menu. This message has no effect if the receiver was not configured to show a menu. Clients may call this method in order to trigger the menu via keystrokes or other gestures. Subclasses typically do not override method.

    • setInfoText

      protected void setInfoText(String text)
      Set the text to be shown in the popup's info area. This message has no effect if there was no info text supplied when the dialog first opened. Subclasses may override this method.
      Parameters:
      text - the text to be shown when the info area is displayed.

    • setTitleText

      protected void setTitleText(String text)
      Set the text to be shown in the popup's title area. This message has no effect if there was no title label specified when the dialog was originally opened. Subclasses may override this method.
      Parameters:
      text - the text to be shown when the title area is displayed.

    • getPersistLocation

      protected boolean getPersistLocation()
      Return a boolean indicating whether this dialog will persist its location. This value is initially set in the dialog's constructor, but can be modified if the persist location action is shown on the menu and the user has changed its value. Subclasses may override this method.
      Returns:
      true if the dialog's location will be persisted, false if it will not.
      Since:
      3.4
      See Also:

    • getPersistSize

      protected boolean getPersistSize()
      Return a boolean indicating whether this dialog will persist its size. This value is initially set in the dialog's constructor, but can be modified if the persist size action is shown on the menu and the user has changed its value. Subclasses may override this method.
      Returns:
      true if the dialog's size will be persisted, false if it will not.
      Since:
      3.4
      See Also:

    • open

      public int open()
      Opens this window, creating it first if it has not yet been created.

      This method is reimplemented for special configuration of PopupDialogs. It never blocks on open, immediately returning OK if the open is successful, or CANCEL if it is not. It provides framework hooks that allow subclasses to set the focus and tab order, and avoids the use of shell.open() in cases where the focus should not be given to the shell initially.

      Overrides:
      open in class Window
      Returns:
      the return code
      See Also:

    • close

      public boolean close()
      Closes this window, disposes its shell, and removes this window from its window manager (if it has one).

      This method is extended to save the dialog bounds and initialize widget state so that the widgets can be recreated if the dialog is reopened. This method may be extended (super.close must be called).

      Overrides:
      close in class Window
      Returns:
      true if the window is (or was already) closed, and false if it is still open

    • getDialogSettings

      protected IDialogSettings getDialogSettings()
      Gets the dialog settings that should be used for remembering the bounds of the dialog. Subclasses should override this method when they wish to persist the bounds of the dialog.
      Returns:
      settings the dialog settings used to store the dialog's location and/or size, or null if the dialog's bounds should never be stored.

    • saveDialogBounds

      protected void saveDialogBounds(Shell shell)
      Saves the bounds of the shell in the appropriate dialog settings. The bounds are recorded relative to the parent shell, if there is one, or display coordinates if there is no parent shell. Subclasses typically need not override this method, but may extend it (calling super.saveDialogBounds if additional bounds information should be stored. Clients may also call this method to persist the bounds at times other than closing the dialog.
      Parameters:
      shell - The shell whose bounds are to be stored

    • getInitialSize

      protected Point getInitialSize()
      Description copied from class: Window
      Returns the initial size to use for the shell. The default implementation returns the preferred size of the shell, using Shell.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).
      Overrides:
      getInitialSize in class Window
      Returns:
      the initial size of the shell

    • getDefaultSize

      protected Point getDefaultSize()
      Return the default size to use for the shell. This default size is used if the dialog does not have any persisted size to restore. The default implementation returns the preferred size of the shell. Subclasses should override this method when an alternate default size is desired, rather than overriding getInitialSize().
      Returns:
      the initial size of the shell
      Since:
      3.4
      See Also:

    • getDefaultLocation

      protected Point getDefaultLocation(Point initialSize)
      Returns the default location to use for the shell. This default location is used if the dialog does not have any persisted location to restore. The default implementation uses the location computed by Window.getInitialLocation(Point). Subclasses should override this method when an alternate default location is desired, rather than overriding getInitialLocation(Point).
      Parameters:
      initialSize - the initial size of the shell, as returned by getInitialSize.
      Returns:
      the initial location of the shell
      Since:
      3.4
      See Also:

    • adjustBounds

      protected void adjustBounds()
      Adjust the bounds of the popup as necessary prior to opening the dialog. Default is to do nothing, which honors any bounds set directly by clients or those that have been saved in the dialog settings. Subclasses should override this method when there are bounds computations that must be checked each time the dialog is opened.

    • getInitialLocation

      protected Point getInitialLocation(Point initialSize)
      Description copied from class: Window
      Returns the initial location to use for the shell. The default implementation centers the shell horizontally (1/2 of the difference to the left and 1/2 to the right) and vertically (1/3 above and 2/3 below) relative to the parent shell, or display bounds if there is no parent shell.
      Overrides:
      getInitialLocation in class Window
      Parameters:
      initialSize - the initial size of the shell, as returned by getInitialSize.
      Returns:
      the initial location of the shell

    • getForeground

      protected Color getForeground()
      Get the foreground color that should be used for this popup. Subclasses may override.
      Returns:
      the foreground color to be used. Should not be null.
      Since:
      3.4
      See Also:

    • getBackground

      protected Color getBackground()
      Get the background color that should be used for this popup. Subclasses may override.
      Returns:
      the background color to be used. Should not be null.
      Since:
      3.4
      See Also:

    • applyForegroundColor

      protected void applyForegroundColor(Color color, Control control)
      Set the specified foreground color for the specified control and all of its children. Subclasses may override this method, but typically do not. If a subclass wishes to exclude a particular control in its contents from getting the specified foreground color, it may instead override getForegroundColorExclusions().
      Parameters:
      color - the color to use as the foreground color
      control - the control whose color is to be changed
      See Also:

    • applyBackgroundColor

      protected void applyBackgroundColor(Color color, Control control)
      Set the specified background color for the specified control and all of its children. Subclasses may override this method, but typically do not. If a subclass wishes to exclude a particular control in its contents from getting the specified background color, it may instead override getBackgroundColorExclusions()
      Parameters:
      color - the color to use as the background color
      control - the control whose color is to be changed
      See Also:

    • getForegroundColorExclusions

      protected List<Control> getForegroundColorExclusions()
      Return a list of controls which should never have their foreground color reset. Subclasses may extend this method, but should always call super.getForegroundColorExclusions to aggregate the list.
      Returns:
      the List of controls

    • getBackgroundColorExclusions

      protected List<Control> getBackgroundColorExclusions()
      Return a list of controls which should never have their background color reset. Subclasses may extend this method, but should always call super.getBackgroundColorExclusions to aggregate the list.
      Returns:
      the List of controls