deeb0a89b9
a chance to initiate processing after a page is presented. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63263 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
505 lines
19 KiB
Objective-C
505 lines
19 KiB
Objective-C
/////////////////////////////////////////////////////////////////////////////
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// Name: wizard.h
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// Purpose: interface of wxWizardPage, wxWizardEvent,
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// Author: wxWidgets team
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// RCS-ID: $Id$
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// Licence: wxWindows license
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/////////////////////////////////////////////////////////////////////////////
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/**
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@class wxWizardPage
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wxWizardPage is one of the screens in wxWizard: it must know what are the
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following and preceding pages (which may be @NULL for the first/last page).
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Except for this extra knowledge, wxWizardPage is just a
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panel, so the controls may be placed directly on it in the usual way.
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This class allows the programmer to decide the order of pages in the wizard
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dynamically (during run-time) and so provides maximal flexibility.
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Usually, however, the order of pages is known in advance in which case
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wxWizardPageSimple class is enough and it is simpler to use.
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@section wizardpage_virtuals Virtual functions to override
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To use this class, you must override wxWizardPage::GetPrev() and
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wxWizardPage::GetNext() pure virtual functions (or you may use
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wxWizardPageSimple instead).
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wxWizardPage::GetBitmap() can also be overridden, but this should be very
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rarely needed.
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@library{wxadv}
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@category{miscwnd}
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@see wxWizard, @ref page_samples_wizard
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*/
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class wxWizardPage : public wxPanel
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{
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public:
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/**
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Constructor accepts an optional bitmap which will be used for this page
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instead of the default one for this wizard (note that all bitmaps used should
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be of the same size). Notice that no other parameters are needed because the
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wizard will resize and reposition the page anyhow.
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@param parent
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The parent wizard
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@param bitmap
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The page-specific bitmap if different from the global one
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*/
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wxWizardPage(wxWizard* parent,
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const wxBitmap& bitmap = wxNullBitmap);
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/**
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This method is called by wxWizard to get the bitmap to display alongside the page.
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By default, @c m_bitmap member variable which was set in the
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@ref wxWizardPage() constructor.
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If the bitmap was not explicitly set (i.e. if ::wxNullBitmap is returned),
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the default bitmap for the wizard should be used.
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The only cases when you would want to override this function is if the page
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bitmap depends dynamically on the user choices, i.e. almost never.
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*/
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virtual wxBitmap GetBitmap() const;
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/**
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Get the page which should be shown when the user chooses the @c "Next"
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button: if @NULL is returned, this button will be disabled.
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The last page of the wizard will usually return @NULL from here, but
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the others will not.
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@see GetPrev()
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*/
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virtual wxWizardPage* GetNext() const = 0;
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/**
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Get the page which should be shown when the user chooses the @c "Back"
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button: if @NULL is returned, this button will be disabled.
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The first page of the wizard will usually return @NULL from here, but
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the others will not.
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@see GetNext()
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*/
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virtual wxWizardPage* GetPrev() const = 0;
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};
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/**
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@class wxWizardEvent
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wxWizardEvent class represents an event generated by the wxWizard: this event
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is first sent to the page itself and, if not processed there, goes up the
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window hierarchy as usual.
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@beginEventTable{wxWizardEvent}
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@event{EVT_WIZARD_PAGE_CHANGED(id, func)}
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The page has been just changed (this event can not be vetoed).
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@event{EVT_WIZARD_PAGE_CHANGING(id, func)}
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The page is being changed (this event can be vetoed).
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@event{EVT_WIZARD_PAGE_SHOWN(id, func)}
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The page was shown and laid out (this event cannot be vetoed).
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@event{EVT_WIZARD_CANCEL(id, func)}
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The user attempted to cancel the wizard (this event may also be vetoed).
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@event{EVT_WIZARD_HELP(id, func)}
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The wizard help button was pressed.
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@event{EVT_WIZARD_FINISHED(id, func)}
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The wizard finished button was pressed.
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@endEventTable
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@library{wxadv}
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@category{events}
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@see wxWizard, @ref page_samples_wizard
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*/
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class wxWizardEvent : public wxNotifyEvent
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{
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public:
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/**
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Constructor.
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It is not normally used by the user code as the objects of this
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type are constructed by wxWizard.
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*/
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wxWizardEvent(wxEventType type = wxEVT_NULL, int id = wxID_ANY,
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bool direction = true, wxWizardPage* page = 0);
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/**
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Return the direction in which the page is changing: for
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@c EVT_WIZARD_PAGE_CHANGING, return @true if we're going forward or
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@false otherwise and for @c EVT_WIZARD_PAGE_CHANGED return @true if we
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came from the previous page and @false if we returned from the next one.
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*/
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bool GetDirection() const;
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/**
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Returns the wxWizardPage which was active when this event was generated.
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*/
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wxWizardPage* GetPage() const;
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};
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/**
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@class wxWizardPageSimple
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wxWizardPageSimple is the simplest possible wxWizardPage implementation:
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it just returns the pointers given to its constructor from wxWizardPage::GetNext()
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and wxWizardPage::GetPrev() functions.
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This makes it very easy to use the objects of this class in the wizards where
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the pages order is known statically - on the other hand, if this is not the
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case you must derive your own class from wxWizardPage instead.
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@library{wxadv}
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@category{miscwnd}
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@see wxWizard, @ref page_samples_wizard
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*/
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class wxWizardPageSimple : public wxWizardPage
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{
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public:
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/**
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Constructor takes the previous and next pages.
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They may be modified later by SetPrev() or SetNext().
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*/
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wxWizardPageSimple(wxWizard* parent,
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wxWizardPage* prev = NULL,
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wxWizardPage* next = NULL,
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const wxBitmap& bitmap = wxNullBitmap);
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/**
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A convenience function to make the pages follow each other.
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Example:
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@code
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wxRadioboxPage *page3 = new wxRadioboxPage(wizard);
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wxValidationPage *page4 = new wxValidationPage(wizard);
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wxWizardPageSimple::Chain(page3, page4);
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@endcode
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*/
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static void Chain(wxWizardPageSimple* first,
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wxWizardPageSimple* second);
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/**
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Sets the next page.
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*/
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void SetNext(wxWizardPage* next);
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/**
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Sets the previous page.
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*/
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void SetPrev(wxWizardPage* prev);
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};
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/**
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@class wxWizard
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wxWizard is the central class for implementing 'wizard-like' dialogs.
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These dialogs are mostly familiar to Windows users and are nothing other than a
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sequence of 'pages', each displayed inside a dialog which has the buttons to
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navigate to the next (and previous) pages.
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The wizards are typically used to decompose a complex dialog into several
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simple steps and are mainly useful to the novice users, hence it is important
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to keep them as simple as possible.
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To show a wizard dialog, you must first create an instance of the wxWizard class
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using either the non-default constructor or a default one followed by call to the
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wxWizard::Create function. Then you should add all pages you want the wizard to
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show and call wxWizard::RunWizard().
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Finally, don't forget to call @c "wizard->Destroy()", otherwise your application
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will hang on exit due to an undestroyed window.
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You can supply a bitmap to display on the left of the wizard, either for all pages
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or for individual pages. If you need to have the bitmap resize to the height of
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the wizard, call wxWizard::SetBitmapPlacement() and if necessary,
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wxWizard::SetBitmapBackgroundColour() and wxWizard::SetMinimumBitmapWidth().
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To make wizard pages scroll when the display is too small to fit the whole
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dialog, you can switch layout adaptation on globally with
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wxDialog::EnableLayoutAdaptation() or per dialog with wxDialog::SetLayoutAdaptationMode().
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For more about layout adaptation, see @ref overview_dialog_autoscrolling.
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@beginEventEmissionTable{wxWizardEvent}
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For some events, Veto() can be called to prevent the event from happening.
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@event{EVT_WIZARD_PAGE_CHANGED(id, func)}
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The page has just been changed (this event cannot be vetoed).
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@event{EVT_WIZARD_PAGE_CHANGING(id, func)}
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The page is being changed (this event can be vetoed).
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@event{EVT_WIZARD_PAGE_SHOWN(id, func)}
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The page was shown and laid out (this event cannot be vetoed).
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@event{EVT_WIZARD_CANCEL(id, func)}
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The user attempted to cancel the wizard (this event may also be vetoed).
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@event{EVT_WIZARD_HELP(id, func)}
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The wizard help button was pressed.
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@event{EVT_WIZARD_FINISHED(id, func)}
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The wizard finished button was pressed.
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@endEventTable
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@section wizard_extstyles Extended styles
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Use the wxWindow::SetExtraStyle() function to set the following style.
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You will need to use two-step construction (use the default constructor,
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call SetExtraStyle(), then call Create).
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@beginExtraStyleTable
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@style{wxWIZARD_EX_HELPBUTTON}
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Shows a Help button using wxID_HELP.
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@endExtraStyleTable
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See also wxDialog for other extended styles.
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@library{wxadv}
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@category{cmndlg}
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@see wxWizardEvent, wxWizardPage, @ref page_samples_wizard
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*/
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class wxWizard : public wxDialog
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{
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public:
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/**
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Default constructor.
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Use this if you wish to derive from wxWizard and then call Create(),
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for example if you wish to set an extra style with wxWindow::SetExtraStyle()
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between the two calls.
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*/
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wxWizard();
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/**
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Constructor which really creates the wizard -- if you use this constructor, you
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shouldn't call Create().
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Notice that unlike almost all other wxWidgets classes, there is no @e size
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parameter in the wxWizard constructor because the wizard will have a predefined
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default size by default.
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If you want to change this, you should use the GetPageAreaSizer() function.
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@param parent
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The parent window, may be @NULL.
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@param id
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The id of the dialog, will usually be just wxID_ANY.
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@param title
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The title of the dialog.
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@param bitmap
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The default bitmap used in the left side of the wizard. See also GetBitmap().
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@param pos
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The position of the dialog, it will be centered on the screen by default.
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@param style
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Window style is passed to wxDialog.
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*/
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wxWizard(wxWindow* parent, int id = wxID_ANY,
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const wxString& title = wxEmptyString,
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const wxBitmap& bitmap = wxNullBitmap,
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const wxPoint& pos = wxDefaultPosition,
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long style = wxDEFAULT_DIALOG_STYLE);
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/**
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Creates the wizard dialog.
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Must be called if the default constructor had been used to create the object.
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Notice that unlike almost all other wxWidgets classes, there is no @e size
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parameter in the wxWizard constructor because the wizard will have a predefined
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default size by default.
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If you want to change this, you should use the GetPageAreaSizer() function.
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@param parent
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The parent window, may be @NULL.
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@param id
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The id of the dialog, will usually be just -1.
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@param title
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The title of the dialog.
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@param bitmap
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The default bitmap used in the left side of the wizard. See also GetBitmap().
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@param pos
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The position of the dialog, it will be centered on the screen by default.
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@param style
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Window style is passed to wxDialog.
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*/
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bool Create(wxWindow* parent, int id = wxID_ANY,
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const wxString& title = wxEmptyString,
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const wxBitmap& bitmap = wxNullBitmap,
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const wxPoint& pos = wxDefaultPosition, long style = 536877056);
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/**
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This method is obsolete, use GetPageAreaSizer() instead.
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Sets the page size to be big enough for all the pages accessible via the
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given @e firstPage, i.e. this page, its next page and so on.
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This method may be called more than once and it will only change the page size
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if the size required by the new page is bigger than the previously set one.
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This is useful if the decision about which pages to show is taken during
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run-time, as in this case, the wizard won't be able to get to all pages starting
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from a single one and you should call @e Fit separately for the others.
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*/
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virtual void FitToPage(const wxWizardPage* firstPage);
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/**
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Returns the bitmap used for the wizard.
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*/
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const wxBitmap& GetBitmap() const;
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/**
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Returns the colour that should be used to fill the area not taken up by the
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wizard or page bitmap, if a non-zero bitmap placement flag has been set.
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See also SetBitmapPlacement().
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*/
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const wxColour& GetBitmapBackgroundColour() const;
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/**
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Returns the flags indicating how the wizard or page bitmap should be expanded
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and positioned to fit the page height. By default, placement is 0 (no expansion is done).
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See also SetBitmapPlacement() for the possible values.
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*/
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int GetBitmapPlacement() const;
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/**
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Get the current page while the wizard is running.
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@NULL is returned if RunWizard() is not being executed now.
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*/
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virtual wxWizardPage* GetCurrentPage() const;
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/**
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Returns the minimum width for the bitmap that will be constructed to contain
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the actual wizard or page bitmap if a non-zero bitmap placement flag has been set.
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See also SetBitmapPlacement().
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*/
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int GetMinimumBitmapWidth() const;
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/**
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Returns pointer to page area sizer. The wizard is laid out using sizers and
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the page area sizer is the place-holder for the pages. All pages are resized
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before being shown to match the wizard page area.
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Page area sizer has a minimal size that is the maximum of several values.
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First, all pages (or other objects) added to the sizer. Second, all pages reachable
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by repeatedly applying wxWizardPage::GetNext() to any page inserted into the sizer.
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Third, the minimal size specified using SetPageSize() and FitToPage().
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Fourth, the total wizard height may be increased to accommodate the bitmap height.
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Fifth and finally, wizards are never smaller than some built-in minimal size to
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avoid wizards that are too small.
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The caller can use wxSizer::SetMinSize to enlarge it beyond the minimal size.
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If @c wxRESIZE_BORDER was passed to constructor, user can resize wizard and
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consequently the page area (but not make it smaller than the minimal size).
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It is recommended to add the first page to the page area sizer.
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For simple wizards, this will enlarge the wizard to fit the biggest page.
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For non-linear wizards, the first page of every separate chain should be added.
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Caller-specified size can be accomplished using wxSizer::SetMinSize().
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Adding pages to the page area sizer affects the default border width around page
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area that can be altered with SetBorder().
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*/
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virtual wxSizer* GetPageAreaSizer() const;
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/**
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Returns the size available for the pages.
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*/
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virtual wxSize GetPageSize() const;
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/**
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Return @true if this page is not the last one in the wizard.
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The base class version implements this by calling
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@ref wxWizardPage::GetNext "page->GetNext" but this could be
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undesirable if, for example, the pages are created on demand only.
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@see HasPrevPage()
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*/
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virtual bool HasNextPage(wxWizardPage* page);
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/**
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Returns @true if this page is not the last one in the wizard.
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The base class version implements this by calling
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@ref wxWizardPage::GetPrev "page->GetPrev" but this could be
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undesirable if, for example, the pages are created on demand only.
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@see HasNextPage()
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*/
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virtual bool HasPrevPage(wxWizardPage* page);
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/**
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Executes the wizard starting from the given page, returning @true if it was
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successfully finished or @false if user cancelled it.
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The @a firstPage can not be @NULL.
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*/
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virtual bool RunWizard(wxWizardPage* firstPage);
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/**
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Sets the bitmap used for the wizard.
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*/
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void SetBitmap(const wxBitmap& bitmap);
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/**
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Sets the colour that should be used to fill the area not taken up by the wizard
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or page bitmap, if a non-zero bitmap placement flag has been set.
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See also SetBitmapPlacement().
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*/
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void SetBitmapBackgroundColour(const wxColour& colour);
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/**
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Sets the flags indicating how the wizard or page bitmap should be expanded and
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positioned to fit the page height.
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By default, placement is 0 (no expansion is done). @a placement is a bitlist with the
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following possible values:
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- @b wxWIZARD_VALIGN_TOP: Aligns the bitmap at the top.
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- @b wxWIZARD_VALIGN_CENTRE: Centres the bitmap vertically.
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- @b wxWIZARD_VALIGN_BOTTOM: Aligns the bitmap at the bottom.
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- @b wxWIZARD_HALIGN_LEFT: Left-aligns the bitmap.
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- @b wxWIZARD_HALIGN_CENTRE: Centres the bitmap horizontally.
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- @b wxWIZARD_HALIGN_RIGHT: Right-aligns the bitmap.
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- @b wxWIZARD_TILE: @todo describe this
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See also SetMinimumBitmapWidth().
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*/
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void SetBitmapPlacement(int placement);
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/**
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Sets width of border around page area. Default is zero.
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For backward compatibility, if there are no pages in GetPageAreaSizer(),
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the default is 5 pixels.
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If there is a five point border around all controls in a page and the border
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around page area is left as zero, a five point white space along all dialog borders
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will be added to the control border in order to space page controls ten points
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from the dialog border and non-page controls.
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*/
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virtual void SetBorder(int border);
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/**
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Sets the minimum width for the bitmap that will be constructed to contain the
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actual wizard or page bitmap if a non-zero bitmap placement flag has been set.
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If this is not set when using bitmap placement, the initial layout may be incorrect.
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See also SetBitmapPlacement().
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*/
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void SetMinimumBitmapWidth(int width);
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/**
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Sets the minimal size to be made available for the wizard pages.
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The wizard will take into account the size of the bitmap (if any) itself.
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Also, the wizard will never be smaller than the default size.
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The recommended way to use this function is to lay out all wizard pages
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using the sizers (even though the wizard is not resizeable) and then use
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wxSizer::CalcMin() in a loop to calculate the maximum of minimal sizes of
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the pages and pass it to SetPageSize().
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*/
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virtual void SetPageSize(const wxSize& sizePage);
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};
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