107defe36a
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@62989 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
828 lines
26 KiB
Objective-C
828 lines
26 KiB
Objective-C
/////////////////////////////////////////////////////////////////////////////
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// Name: combo.h
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// Purpose: interface of wxComboCtrl and wxComboPopup
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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 wxComboPopup
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In order to use a custom popup with wxComboCtrl, an interface class must be
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derived from wxComboPopup.
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For more information on how to use it, see @ref comboctrl_custompopup.
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@library{wxcore}
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@category{ctrl}
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@see wxComboCtrl
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*/
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class wxComboPopup
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{
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public:
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/**
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Default constructor. It is recommended that internal variables are
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prepared in Init() instead (because m_combo is not valid in
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constructor).
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*/
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wxComboPopup();
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/**
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The derived class must implement this to create the popup control.
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@return @true if the call succeeded, @false otherwise.
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*/
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virtual bool Create(wxWindow* parent) = 0;
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/**
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Utility function that hides the popup.
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*/
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void Dismiss();
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/**
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The derived class may implement this to return adjusted size for the
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popup control, according to the variables given.
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@param minWidth
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Preferred minimum width.
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@param prefHeight
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Preferred height. May be -1 to indicate no preference.
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@param maxHeight
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Max height for window, as limited by screen size.
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@remarks This function is called each time popup is about to be shown.
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*/
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virtual wxSize GetAdjustedSize(int minWidth, int prefHeight, int maxHeight);
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/**
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Returns pointer to the associated parent wxComboCtrl.
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*/
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wxComboCtrl* GetComboCtrl() const;
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/**
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The derived class must implement this to return pointer to the
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associated control created in Create().
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*/
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virtual wxWindow* GetControl() = 0;
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/**
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The derived class must implement this to return string representation
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of the value.
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*/
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virtual wxString GetStringValue() const = 0;
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/**
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The derived class must implement this to initialize its internal
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variables. This method is called immediately after construction
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finishes. m_combo member variable has been initialized before the call.
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*/
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virtual void Init();
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/**
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Utility method that returns @true if Create has been called.
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Useful in conjunction with LazyCreate().
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*/
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bool IsCreated() const;
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/**
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The derived class may implement this to return @true if it wants to
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delay call to Create() until the popup is shown for the first time. It
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is more efficient, but on the other hand it is often more convenient to
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have the control created immediately.
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@remarks Base implementation returns @false.
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*/
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virtual bool LazyCreate();
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/**
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The derived class may implement this to do something when the parent
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wxComboCtrl gets double-clicked.
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*/
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virtual void OnComboDoubleClick();
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/**
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The derived class may implement this to receive key events from the
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parent wxComboCtrl.
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Events not handled should be skipped, as usual.
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*/
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virtual void OnComboKeyEvent(wxKeyEvent& event);
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/**
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The derived class may implement this to do special processing when
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popup is hidden.
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*/
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virtual void OnDismiss();
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/**
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The derived class may implement this to do special processing when
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popup is shown.
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*/
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virtual void OnPopup();
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/**
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The derived class may implement this to paint the parent wxComboCtrl.
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Default implementation draws value as string.
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*/
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virtual void PaintComboControl(wxDC& dc, const wxRect& rect);
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/**
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The derived class must implement this to receive string value changes
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from wxComboCtrl.
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*/
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virtual void SetStringValue(const wxString& value);
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protected:
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/**
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Parent wxComboCtrl. This member variable is prepared automatically
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before Init() is called.
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*/
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wxComboCtrl* m_combo;
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};
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/**
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Features enabled for wxComboCtrl.
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@see wxComboCtrl::GetFeatures()
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*/
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struct wxComboCtrlFeatures
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{
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enum
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{
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MovableButton = 0x0001, ///< Button can be on either side of control.
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BitmapButton = 0x0002, ///< Button may be replaced with bitmap.
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ButtonSpacing = 0x0004, ///< Button can have spacing from the edge
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///< of the control.
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TextIndent = 0x0008, ///< wxComboCtrl::SetMargins() can be used.
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PaintControl = 0x0010, ///< Combo control itself can be custom painted.
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PaintWritable = 0x0020, ///< A variable-width area in front of writable
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///< combo control's textctrl can be custom
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///< painted.
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Borderless = 0x0040, ///< wxNO_BORDER window style works.
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All = MovableButton | BitmapButton | ButtonSpacing |
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TextIndent | PaintControl | PaintWritable |
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Borderless ///< All features.
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};
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};
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/**
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@class wxComboCtrl
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A combo control is a generic combobox that allows totally custom popup. In
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addition it has other customization features. For instance, position and
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size of the dropdown button can be changed.
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@section comboctrl_custompopup Setting Custom Popup for wxComboCtrl
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wxComboCtrl needs to be told somehow which control to use and this is done
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by SetPopupControl(). However, we need something more than just a wxControl
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in this method as, for example, we need to call
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SetStringValue("initial text value") and wxControl doesn't have such
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method. So we also need a wxComboPopup which is an interface which must be
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implemented by a control to be usable as a popup.
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We couldn't derive wxComboPopup from wxControl as this would make it
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impossible to have a class deriving from a wxWidgets control and from it,
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so instead it is just a mix-in.
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Here's a minimal sample of wxListView popup:
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@code
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#include <wx/combo.h>
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#include <wx/listctrl.h>
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class wxListViewComboPopup : public wxListView, public wxComboPopup
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{
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public:
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// Initialize member variables
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virtual void Init()
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{
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m_value = -1;
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}
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// Create popup control
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virtual bool Create(wxWindow* parent)
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{
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return wxListView::Create(parent,1,wxPoint(0,0),wxDefaultSize);
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}
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// Return pointer to the created control
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virtual wxWindow *GetControl() { return this; }
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// Translate string into a list selection
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virtual void SetStringValue(const wxString& s)
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{
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int n = wxListView::FindItem(-1,s);
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if ( n >= 0 && n < wxListView::GetItemCount() )
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wxListView::Select(n);
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}
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// Get list selection as a string
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virtual wxString GetStringValue() const
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{
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if ( m_value >= 0 )
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return wxListView::GetItemText(m_value);
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return wxEmptyString;
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}
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// Do mouse hot-tracking (which is typical in list popups)
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void OnMouseMove(wxMouseEvent& event)
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{
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// TODO: Move selection to cursor
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}
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// On mouse left up, set the value and close the popup
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void OnMouseClick(wxMouseEvent& WXUNUSED(event))
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{
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m_value = wxListView::GetFirstSelected();
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// TODO: Send event as well
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Dismiss();
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}
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protected:
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int m_value; // current item index
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private:
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DECLARE_EVENT_TABLE()
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};
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BEGIN_EVENT_TABLE(wxListViewComboPopup, wxListView)
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EVT_MOTION(wxListViewComboPopup::OnMouseMove)
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EVT_LEFT_UP(wxListViewComboPopup::OnMouseClick)
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END_EVENT_TABLE()
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@endcode
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Here's how you would create and populate it in a dialog constructor:
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@code
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wxComboCtrl* comboCtrl = new wxComboCtrl(this, wxID_ANY, wxEmptyString);
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wxListViewComboPopup* popupCtrl = new wxListViewComboPopup();
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// It is important to call SetPopupControl() as soon as possible
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comboCtrl->SetPopupControl(popupCtrl);
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// Populate using wxListView methods
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popupCtrl->InsertItem(popupCtrl->GetItemCount(), "First Item");
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popupCtrl->InsertItem(popupCtrl->GetItemCount(), "Second Item");
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popupCtrl->InsertItem(popupCtrl->GetItemCount(), "Third Item");
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@endcode
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@beginStyleTable
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@style{wxCB_READONLY}
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Text will not be editable.
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@style{wxCB_SORT}
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Sorts the entries in the list alphabetically.
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@style{wxTE_PROCESS_ENTER}
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The control will generate the event wxEVT_COMMAND_TEXT_ENTER
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(otherwise pressing Enter key is either processed internally by the
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control or used for navigation between dialog controls). Windows
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only.
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@style{wxCC_SPECIAL_DCLICK}
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Double-clicking triggers a call to popup's OnComboDoubleClick.
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Actual behaviour is defined by a derived class. For instance,
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wxOwnerDrawnComboBox will cycle an item. This style only applies if
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wxCB_READONLY is used as well.
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@style{wxCC_STD_BUTTON}
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Drop button will behave more like a standard push button.
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@endStyleTable
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@beginEventEmissionTable{wxCommandEvent}
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@event{EVT_TEXT(id, func)}
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Process a wxEVT_COMMAND_TEXT_UPDATED event, when the text changes.
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@event{EVT_TEXT_ENTER(id, func)}
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Process a wxEVT_COMMAND_TEXT_ENTER event, when RETURN is pressed in
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the combo control.
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@event{EVT_COMBOBOX_DROPDOWN(id, func)}
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Process a wxEVT_COMMAND_COMBOBOX_DROPDOWN event, which is generated
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when the popup window is shown (drops down).
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@event{EVT_COMBOBOX_CLOSEUP(id, func)}
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Process a wxEVT_COMMAND_COMBOBOX_CLOSEUP event, which is generated
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when the popup window of the combo control disappears (closes up).
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You should avoid adding or deleting items in this event.
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@endEventTable
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@library{wxbase}
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@category{ctrl}
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@appearance{comboctrl.png}
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@see wxComboBox, wxChoice, wxOwnerDrawnComboBox, wxComboPopup,
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wxCommandEvent
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*/
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class wxComboCtrl : public wxControl
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{
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public:
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/**
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Default constructor.
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*/
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wxComboCtrl();
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/**
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Constructor, creating and showing a combo control.
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@param parent
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Parent window. Must not be @NULL.
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@param id
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Window identifier. The value wxID_ANY indicates a default value.
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@param value
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Initial selection string. An empty string indicates no selection.
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@param pos
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Window position.
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If ::wxDefaultPosition is specified then a default position is chosen.
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@param size
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Window size.
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If ::wxDefaultSize is specified then the window is sized appropriately.
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@param style
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Window style. See wxComboCtrl.
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@param validator
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Window validator.
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@param name
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Window name.
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@see Create(), wxValidator
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*/
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wxComboCtrl(wxWindow* parent, wxWindowID id = wxID_ANY,
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const wxString& value = wxEmptyString,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = 0,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxComboBoxNameStr);
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/**
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Destructor, destroying the combo control.
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*/
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virtual ~wxComboCtrl();
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/**
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Copies the selected text to the clipboard.
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*/
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virtual void Copy();
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/**
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Creates the combo control for two-step construction. Derived classes
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should call or replace this function. See wxComboCtrl() for further
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details.
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*/
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bool Create(wxWindow* parent, wxWindowID id = wxID_ANY,
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const wxString& value = wxEmptyString,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = 0,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxComboBoxNameStr);
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/**
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Copies the selected text to the clipboard and removes the selection.
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*/
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virtual void Cut();
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/**
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Enables or disables popup animation, if any, depending on the value of
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the argument.
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*/
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void EnablePopupAnimation(bool enable = true);
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/**
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Returns disabled button bitmap that has been set with
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SetButtonBitmaps().
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@return A reference to the disabled state bitmap.
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*/
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const wxBitmap& GetBitmapDisabled() const;
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/**
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Returns button mouse hover bitmap that has been set with
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SetButtonBitmaps().
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@return A reference to the mouse hover state bitmap.
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*/
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const wxBitmap& GetBitmapHover() const;
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/**
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Returns default button bitmap that has been set with
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SetButtonBitmaps().
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@return A reference to the normal state bitmap.
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*/
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const wxBitmap& GetBitmapNormal() const;
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/**
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Returns depressed button bitmap that has been set with
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SetButtonBitmaps().
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@return A reference to the depressed state bitmap.
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*/
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const wxBitmap& GetBitmapPressed() const;
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/**
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Returns current size of the dropdown button.
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*/
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wxSize GetButtonSize();
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/**
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Returns custom painted area in control.
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@see SetCustomPaintWidth().
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*/
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int GetCustomPaintWidth() const;
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/**
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Returns features supported by wxComboCtrl. If needed feature is
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missing, you need to instead use wxGenericComboCtrl, which however may
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lack a native look and feel (but otherwise sports identical API).
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@return Value returned is a combination of the flags defined in
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wxComboCtrlFeatures.
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*/
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static int GetFeatures();
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/**
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Returns the current hint string.
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See SetHint() for more information about hints.
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@since 2.9.1
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*/
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virtual wxString GetHint() const;
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/**
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Returns the insertion point for the combo control's text field.
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@note Under Windows, this function always returns 0 if the combo
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control doesn't have the focus.
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*/
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virtual long GetInsertionPoint() const;
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/**
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Returns the last position in the combo control text field.
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*/
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virtual long GetLastPosition() const;
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/**
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Returns the margins used by the control. The @c x field of the returned
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point is the horizontal margin and the @c y field is the vertical one.
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@remarks If given margin cannot be accurately determined, its value
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will be set to -1.
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@see SetMargins()
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@since 2.9.1
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*/
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wxPoint GetMargins() const;
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/**
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Returns current popup interface that has been set with
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SetPopupControl().
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*/
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wxComboPopup* GetPopupControl();
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/**
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Returns popup window containing the popup control.
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*/
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wxWindow* GetPopupWindow() const;
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/**
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Get the text control which is part of the combo control.
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*/
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wxTextCtrl* GetTextCtrl() const;
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/**
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Returns actual indentation in pixels.
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@deprecated Use GetMargins() instead.
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*/
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wxCoord GetTextIndent() const;
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/**
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Returns area covered by the text field (includes everything except
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borders and the dropdown button).
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*/
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const wxRect& GetTextRect() const;
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/**
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Returns text representation of the current value. For writable combo
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control it always returns the value in the text field.
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*/
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virtual wxString GetValue() const;
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/**
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Dismisses the popup window.
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@param generateEvent
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Set this to @true in order to generate
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wxEVT_COMMAND_COMBOBOX_CLOSEUP event.
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*/
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virtual void HidePopup(bool generateEvent=false);
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/**
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Returns @true if the popup is currently shown
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*/
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bool IsPopupShown() const;
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/**
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Returns @true if the popup window is in the given state. Possible
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values are:
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@beginTable
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@row2col{wxComboCtrl::Hidden, Popup window is hidden.}
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@row2col{wxComboCtrl::Animating, Popup window is being shown, but the
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popup animation has not yet finished.}
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@row2col{wxComboCtrl::Visible, Popup window is fully visible.}
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@endTable
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*/
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bool IsPopupWindowState(int state) const;
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/**
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Implement in a derived class to define what happens on dropdown button
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click. Default action is to show the popup.
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@note If you implement this to do something else than show the popup,
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you must then also implement DoSetPopupControl() to always return
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@NULL.
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*/
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virtual void OnButtonClick();
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/**
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Pastes text from the clipboard to the text field.
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*/
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virtual void Paste();
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/**
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Removes the text between the two positions in the combo control text
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field.
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@param from
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The first position.
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@param to
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The last position.
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*/
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virtual void Remove(long from, long to);
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/**
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Replaces the text between two positions with the given text, in the
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combo control text field.
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@param from
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The first position.
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@param to
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The second position.
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@param text
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The text to insert.
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*/
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virtual void Replace(long from, long to, const wxString& text);
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/**
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Sets custom dropdown button graphics.
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@param bmpNormal
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Default button image.
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@param pushButtonBg
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If @true, blank push button background is painted below the image.
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@param bmpPressed
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Depressed button image.
|
|
@param bmpHover
|
|
Button image when mouse hovers above it. This should be ignored on
|
|
platforms and themes that do not generally draw different kind of
|
|
button on mouse hover.
|
|
@param bmpDisabled
|
|
Disabled button image.
|
|
*/
|
|
void SetButtonBitmaps(const wxBitmap& bmpNormal,
|
|
bool pushButtonBg = false,
|
|
const wxBitmap& bmpPressed = wxNullBitmap,
|
|
const wxBitmap& bmpHover = wxNullBitmap,
|
|
const wxBitmap& bmpDisabled = wxNullBitmap);
|
|
|
|
/**
|
|
Sets size and position of dropdown button.
|
|
|
|
@param width
|
|
Button width. Value = 0 specifies default.
|
|
@param height
|
|
Button height. Value = 0 specifies default.
|
|
@param side
|
|
Indicates which side the button will be placed. Value can be wxLEFT
|
|
or wxRIGHT.
|
|
@param spacingX
|
|
Horizontal spacing around the button. Default is 0.
|
|
*/
|
|
void SetButtonPosition(int width = -1, int height = -1,
|
|
int side = wxRIGHT, int spacingX = 0);
|
|
|
|
/**
|
|
Set width, in pixels, of custom painted area in control without
|
|
@c wxCB_READONLY style. In read-only wxOwnerDrawnComboBox, this is used
|
|
to indicate area that is not covered by the focus rectangle.
|
|
*/
|
|
void SetCustomPaintWidth(int width);
|
|
|
|
/**
|
|
Sets a hint shown in an empty unfocused combo control.
|
|
|
|
Notice that hints are known as <em>cue banners</em> under MSW or
|
|
<em>placeholder strings</em> under OS X.
|
|
|
|
@see wxTextEntry::SetHint()
|
|
|
|
@since 2.9.1
|
|
*/
|
|
virtual void SetHint(const wxString& hint);
|
|
|
|
/**
|
|
Sets the insertion point in the text field.
|
|
|
|
@param pos
|
|
The new insertion point.
|
|
*/
|
|
virtual void SetInsertionPoint(long pos);
|
|
|
|
/**
|
|
Sets the insertion point at the end of the combo control text field.
|
|
*/
|
|
virtual void SetInsertionPointEnd();
|
|
|
|
//@{
|
|
/**
|
|
Attempts to set the control margins. When margins are given as wxPoint,
|
|
x indicates the left and y the top margin. Use -1 to indicate that
|
|
an existing value should be used.
|
|
|
|
@return
|
|
@true if setting of all requested margins was successful.
|
|
|
|
@since 2.9.1
|
|
*/
|
|
bool SetMargins(const wxPoint& pt);
|
|
bool SetMargins(wxCoord left, wxCoord top = -1);
|
|
//@}
|
|
|
|
/**
|
|
Set side of the control to which the popup will align itself. Valid
|
|
values are @c wxLEFT, @c wxRIGHT and 0. The default value 0 means that
|
|
the most appropriate side is used (which, currently, is always
|
|
@c wxLEFT).
|
|
*/
|
|
void SetPopupAnchor(int anchorSide);
|
|
|
|
/**
|
|
Set popup interface class derived from wxComboPopup. This method should
|
|
be called as soon as possible after the control has been created,
|
|
unless OnButtonClick() has been overridden.
|
|
*/
|
|
void SetPopupControl(wxComboPopup* popup);
|
|
|
|
/**
|
|
Extends popup size horizontally, relative to the edges of the combo
|
|
control.
|
|
|
|
@param extLeft
|
|
How many pixel to extend beyond the left edge of the control.
|
|
Default is 0.
|
|
@param extRight
|
|
How many pixel to extend beyond the right edge of the control.
|
|
Default is 0.
|
|
|
|
@remarks Popup minimum width may override arguments. It is up to the
|
|
popup to fully take this into account.
|
|
*/
|
|
void SetPopupExtents(int extLeft, int extRight);
|
|
|
|
/**
|
|
Sets preferred maximum height of the popup.
|
|
|
|
@remarks Value -1 indicates the default.
|
|
*/
|
|
void SetPopupMaxHeight(int height);
|
|
|
|
/**
|
|
Sets minimum width of the popup. If wider than combo control, it will
|
|
extend to the left.
|
|
|
|
@remarks Value -1 indicates the default. Also, popup implementation may
|
|
choose to ignore this.
|
|
*/
|
|
void SetPopupMinWidth(int width);
|
|
|
|
/**
|
|
Selects the text between the two positions, in the combo control text
|
|
field.
|
|
|
|
@param from
|
|
The first position.
|
|
@param to
|
|
The second position.
|
|
*/
|
|
virtual void SetSelection(long from, long to);
|
|
|
|
/**
|
|
Sets the text for the text field without affecting the popup. Thus,
|
|
unlike SetValue(), it works equally well with combo control using
|
|
@c wxCB_READONLY style.
|
|
*/
|
|
void SetText(const wxString& value);
|
|
|
|
/**
|
|
This will set the space in pixels between left edge of the control and
|
|
the text, regardless whether control is read-only or not. Value -1 can
|
|
be given to indicate platform default.
|
|
|
|
@deprecated Use SetMargins() instead.
|
|
*/
|
|
void SetTextIndent(int indent);
|
|
|
|
/**
|
|
Sets the text for the combo control text field.
|
|
|
|
@note For a combo control with @c wxCB_READONLY style the string must
|
|
be accepted by the popup (for instance, exist in the dropdown
|
|
list), otherwise the call to SetValue() is ignored.
|
|
*/
|
|
virtual void SetValue(const wxString& value);
|
|
|
|
/**
|
|
Same as SetValue(), but also sends wxCommandEvent of type
|
|
wxEVT_COMMAND_TEXT_UPDATED if @a withEvent is @true.
|
|
*/
|
|
void SetValueWithEvent(const wxString& value, bool withEvent = true);
|
|
|
|
/**
|
|
Show the popup.
|
|
*/
|
|
virtual void ShowPopup();
|
|
|
|
/**
|
|
Undoes the last edit in the text field. Windows only.
|
|
*/
|
|
virtual void Undo();
|
|
|
|
/**
|
|
Enable or disable usage of an alternative popup window, which
|
|
guarantees ability to focus the popup control, and allows common native
|
|
controls to function normally. This alternative popup window is usually
|
|
a wxDialog, and as such, when it is shown, its parent top-level window
|
|
will appear as if the focus has been lost from it.
|
|
*/
|
|
void UseAltPopupWindow(bool enable = true);
|
|
|
|
protected:
|
|
|
|
/**
|
|
This member function is not normally called in application code.
|
|
Instead, it can be implemented in a derived class to create a custom
|
|
popup animation.
|
|
|
|
The parameters are the same as those for DoShowPopup().
|
|
|
|
@return @true if animation finishes before the function returns,
|
|
@false otherwise. In the latter case you need to manually call
|
|
DoShowPopup() after the animation ends.
|
|
*/
|
|
virtual bool AnimateShow(const wxRect& rect, int flags);
|
|
|
|
/**
|
|
This member function is not normally called in application code.
|
|
Instead, it can be implemented in a derived class to return default
|
|
wxComboPopup, incase @a popup is @NULL.
|
|
|
|
@note If you have implemented OnButtonClick() to do something else than
|
|
show the popup, then DoSetPopupControl() must always set @a popup
|
|
to @NULL.
|
|
*/
|
|
virtual void DoSetPopupControl(wxComboPopup* popup);
|
|
|
|
/**
|
|
This member function is not normally called in application code.
|
|
Instead, it must be called in a derived class to make sure popup is
|
|
properly shown after a popup animation has finished (but only if
|
|
AnimateShow() did not finish the animation within its function scope).
|
|
|
|
@param rect
|
|
Position to show the popup window at, in screen coordinates.
|
|
@param flags
|
|
Combination of any of the following:
|
|
@beginTable
|
|
@row2col{wxComboCtrl::ShowAbove,
|
|
Popup is shown above the control instead of below.}
|
|
@row2col{wxComboCtrl::CanDeferShow,
|
|
Showing the popup can be deferred to happen sometime after
|
|
ShowPopup() has finished. In this case, AnimateShow() must
|
|
return false.}
|
|
@endTable
|
|
*/
|
|
virtual void DoShowPopup(const wxRect& rect, int flags);
|
|
};
|
|
|