383 lines
12 KiB
Objective-C
383 lines
12 KiB
Objective-C
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/rearrangectrl.h
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// Purpose: interface of wxRearrangeList
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// Author: Vadim Zeitlin
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// Created: 2008-12-15
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// Copyright: (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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/**
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@class wxRearrangeList
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A listbox-like control allowing the user to rearrange the items and to
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enable or disable them.
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This class allows to change the order of the items shown in it as well as
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to check or uncheck them individually. The data structure used to allow
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this is the order array which contains the items indices indexed by their
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position with an added twist that the unchecked items are represented by
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the bitwise complement of the corresponding index (for any architecture
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using two's complement for negative numbers representation (i.e. just about
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any at all) this means that a checked item N is represented by -N-1 in
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unchecked state). In practice this means that you must apply the C bitwise
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complement operator when constructing the order array, e.g.
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@code
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wxArrayInt order;
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order.push_back(0); // checked item #0
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order.push_back(~1); // unchecked item #1
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@endcode
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So, for example, the array order [1 -3 0] used in conjunction with the
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items array ["first", "second", "third"] means that the items order is
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"second", "third", "first" and the "third" item is unchecked while the
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other two are checked.
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This convention is used both for the order argument of the control ctor or
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Create() and for the array returned from GetCurrentOrder().
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Usually this control will be used together with other controls allowing to
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move the items around in it interactively. The simplest possible solution
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is to use wxRearrangeCtrl which combines it with two standard buttons to
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move the current item up or down.
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@since 2.9.0
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@library{wxcore}
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@category{ctrl}
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@genericAppearance{rearrangelist}
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*/
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class wxRearrangeList : public wxCheckListBox
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{
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public:
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/**
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Default constructor.
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Create() must be called later to effectively create the control.
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*/
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wxRearrangeList();
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/**
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Constructor really creating the control.
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Please see Create() for the parameters description.
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*/
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wxRearrangeList(wxWindow *parent,
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wxWindowID id,
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const wxPoint& pos,
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const wxSize& size,
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const wxArrayInt& order,
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const wxArrayString& items,
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long style = 0,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxRearrangeListNameStr);
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/**
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Effectively creates the window for an object created using the default
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constructor.
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This function is very similar to wxCheckListBox::Create() except that
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it has an additional parameter specifying the initial order of the
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items. Please see the class documentation for the explanation of the
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conventions used by the @a order argument.
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@param parent
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The parent window, must be non-@NULL.
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@param id
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The window identifier.
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@param pos
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The initial window position.
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@param size
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The initial window size.
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@param order
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Array specifying the initial order of the items in @a items array.
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@param items
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The items to display in the list.
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@param style
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The control style, there are no special styles for this class but
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the base class styles can be used here.
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@param validator
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Optional window validator.
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@param name
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Optional window name.
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*/
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bool Create(wxWindow *parent,
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wxWindowID id,
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const wxPoint& pos,
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const wxSize& size,
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const wxArrayInt& order,
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const wxArrayString& items,
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long style = 0,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxRearrangeListNameStr);
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/**
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Return the current order of the items.
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The order may be different from the one passed to the constructor if
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MoveCurrentUp() or MoveCurrentDown() were called.
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*/
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const wxArrayInt& GetCurrentOrder() const;
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/**
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Return @true if the currently selected item can be moved up.
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This function is useful for EVT_UPDATE_UI handler for the standard "Up"
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button often used together with this control and wxRearrangeCtrl uses
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it in this way.
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@return
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@true if the currently selected item can be moved up in the
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listbox, @false if there is no selection or the current item is the
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first one.
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@see CanMoveCurrentDown()
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*/
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bool CanMoveCurrentUp() const;
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/**
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Return @true if the currently selected item can be moved down.
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@see CanMoveCurrentUp()
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*/
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bool CanMoveCurrentDown() const;
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/**
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Move the currently selected item one position above.
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This method is useful to implement the standard "Up" button behaviour
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and wxRearrangeCtrl uses it for this.
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@return
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@true if the item was moved or @false if this couldn't be done.
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@see MoveCurrentDown()
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*/
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bool MoveCurrentUp();
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/**
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Move the currently selected item one position below.
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@see MoveCurrentUp()
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*/
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bool MoveCurrentDown();
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};
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/**
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@class wxRearrangeCtrl
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A composite control containing a wxRearrangeList and the buttons allowing
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to move the items in it.
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This control is in fact a panel containing the wxRearrangeList control and
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the "Up" and "Down" buttons to move the currently selected item up or down.
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It is used as the main part of a wxRearrangeDialog.
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@since 2.9.0
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@library{wxcore}
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@category{ctrl}
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@genericAppearance{rearrangectrl}
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*/
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class wxRearrangeCtrl : public wxPanel
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{
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public:
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/**
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Default constructor.
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Create() must be called later to effectively create the control.
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*/
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wxRearrangeCtrl();
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/**
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Constructor really creating the control.
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Please see Create() for the parameters description.
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*/
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wxRearrangeCtrl(wxWindow *parent,
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wxWindowID id,
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const wxPoint& pos,
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const wxSize& size,
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const wxArrayInt& order,
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const wxArrayString& items,
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long style = 0,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxRearrangeListNameStr);
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/**
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Effectively creates the window for an object created using the default
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constructor.
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The parameters of this method are the same as for
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wxRearrangeList::Create().
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*/
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bool Create(wxWindow *parent,
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wxWindowID id,
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const wxPoint& pos,
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const wxSize& size,
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const wxArrayInt& order,
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const wxArrayString& items,
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long style = 0,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxRearrangeListNameStr);
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/**
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Return the listbox which is the main part of this control.
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*/
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wxRearrangeList *GetList() const;
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};
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/**
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@class wxRearrangeDialog
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A dialog allowing the user to rearrange the specified items.
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This dialog can be used to allow the user to modify the order of the items
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and to enable or disable them individually. For example:
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@code
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wxArrayString items;
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items.push_back("meat");
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items.push_back("fish");
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items.push_back("fruits");
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items.push_back("beer");
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wxArrayInt order;
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order.push_back(3);
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order.push_back(0);
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order.push_back(1);
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order.push_back(2);
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wxRearrangeDialog dlg(NULL,
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"You can also uncheck the items you don't like "
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"at all.",
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"Sort the items in order of preference",
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order, items);
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if ( dlg.ShowModal() == wxID_OK ) {
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order = dlg.GetOrder();
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for ( size_t n = 0; n < order.size(); n++ ) {
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if ( order[n] >= 0 ) {
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wxLogMessage("Your most preferred item is \"%s\"",
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items[order[n]]);
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break;
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}
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}
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}
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@endcode
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@since 2.9.0
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@library{wxcore}
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@category{cmndlg}
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*/
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class wxRearrangeDialog : 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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Create() must be called later to effectively create the control.
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*/
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wxRearrangeDialog();
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/**
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Constructor creating the dialog.
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Please see Create() for the parameters description.
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*/
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wxRearrangeDialog(wxWindow *parent,
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const wxString& message,
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const wxString& title,
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const wxArrayInt& order,
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const wxArrayString& items,
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const wxPoint& pos = wxDefaultPosition,
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const wxString& name = wxRearrangeDialogNameStr);
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/**
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Effectively creates the dialog for an object created using the default
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constructor.
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@param parent
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The dialog parent, possibly @NULL.
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@param message
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The message shown inside the dialog itself, above the items list.
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@param title
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The title of the dialog.
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@param order
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The initial order of the items in the convention used by
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wxRearrangeList.
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@param items
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The items to show in the dialog.
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@param pos
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Optional dialog position.
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@param name
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Optional dialog name.
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@return
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@true if the dialog was successfully created or @false if creation
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failed.
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*/
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bool Create(wxWindow *parent,
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const wxString& message,
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const wxString& title,
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const wxArrayInt& order,
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const wxArrayString& items,
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const wxPoint& pos = wxDefaultPosition,
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const wxString& name = wxRearrangeDialogNameStr);
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/**
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Customize the dialog by adding extra controls to it.
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This function adds the given @a win to the dialog, putting it just
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below the part occupied by wxRearrangeCtrl. It must be called after
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creating the dialog and you will typically need to process the events
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generated by the extra controls for them to do something useful.
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For example:
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@code
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class MyRearrangeDialog : public wxRearrangeDialog
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{
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public:
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MyRearrangeDialog(wxWindow *parent, ...)
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: wxRearrangeDialog(parent, ...)
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{
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wxPanel *panel = new wxPanel(this);
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wxSizer *sizer = new wxBoxSizer(wxHORIZONTAL);
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sizer->Add(new wxStaticText(panel, wxID_ANY,
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"Column width in pixels:"));
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sizer->Add(new wxTextCtrl(panel, wxID_ANY, ""));
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panel->SetSizer(sizer);
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AddExtraControls(panel);
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}
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... code to update the text control with the currently selected
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item width and to react to its changes omitted ...
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};
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@endcode
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See also the complete example of a custom rearrange dialog in the
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dialogs sample.
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@param win
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The window containing the extra controls. It must have this dialog
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as its parent.
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*/
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void AddExtraControls(wxWindow *win);
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/**
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Return the list control used by the dialog.
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@see wxRearrangeCtrl::GetList()
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*/
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wxRearrangeList *GetList() const;
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/**
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Return the array describing the order of items after it was modified by
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the user.
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Please notice that the array will contain negative items if any items
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were unchecked. See wxRearrangeList for more information about the
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convention used for this array.
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*/
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wxArrayInt GetOrder() const;
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};
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