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4713c19b372cbe9abb08433093ea40e965bdb758
wxWidgets/src/gtk1/listbox.cpp
Vadim Zeitlin 25c9b032a8 Don't call CacheBestSize() from DoGetBestSize() implementations 
This is unnecessary, wxWindow::GetBestSize() already does this, so calling it
from DoGetBestSize() called by it too is just useless.
2016-04-03 18:04:26 +02:00

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31 KiB
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/////////////////////////////////////////////////////////////////////////////
// Name: src/gtk1/listbox.cpp
// Purpose:
// Author: Robert Roebling
// Copyright: (c) 1998 Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#if wxUSE_LISTBOX
#include "wx/listbox.h"
#ifndef WX_PRECOMP
#include "wx/dynarray.h"
#include "wx/intl.h"
#include "wx/utils.h"
#include "wx/settings.h"
#include "wx/checklst.h"
#include "wx/arrstr.h"
#endif
#include "wx/gtk1/private.h"
#if wxUSE_TOOLTIPS
#include "wx/tooltip.h"
#endif
#include <gdk/gdk.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
//-----------------------------------------------------------------------------
// idle system
//-----------------------------------------------------------------------------
extern void wxapp_install_idle_handler();
extern bool g_isIdle;
//-----------------------------------------------------------------------------
// data
//-----------------------------------------------------------------------------
extern bool g_blockEventsOnDrag;
extern bool g_blockEventsOnScroll;
extern wxCursor g_globalCursor;
extern wxWindowGTK *g_delayedFocus;
extern wxWindowGTK *g_focusWindow;
extern wxWindowGTK *g_focusWindowLast;
static bool g_hasDoubleClicked = false;
//-----------------------------------------------------------------------------
// idle callback for SetFirstItem
//-----------------------------------------------------------------------------
struct wxlistbox_idle_struct
{
wxListBox *m_listbox;
int m_item;
gint m_tag;
};
extern "C" {
static gint wxlistbox_idle_callback( gpointer gdata )
{
wxlistbox_idle_struct* data = (wxlistbox_idle_struct*) gdata;
gdk_threads_enter();
gtk_idle_remove( data->m_tag );
// check that the items haven't been deleted from the listbox since we had
// installed this callback
wxListBox *lbox = data->m_listbox;
if ( data->m_item < (int)lbox->GetCount() )
{
lbox->SetFirstItem( data->m_item );
}
delete data;
gdk_threads_leave();
return TRUE;
}
}
//-----------------------------------------------------------------------------
// "focus_in_event"
//-----------------------------------------------------------------------------
extern "C" {
static gint gtk_listitem_focus_in_callback( GtkWidget *WXUNUSED(widget),
GdkEvent *WXUNUSED(event),
wxWindow *win )
{
if (g_isIdle)
wxapp_install_idle_handler();
g_focusWindowLast =
g_focusWindow = win;
// does the window itself think that it has the focus?
if ( !win->m_hasFocus )
{
// not yet, notify it
win->m_hasFocus = true;
wxChildFocusEvent eventChildFocus(win);
(void)win->HandleWindowEvent(eventChildFocus);
wxFocusEvent eventFocus(wxEVT_SET_FOCUS, win->GetId());
eventFocus.SetEventObject(win);
(void)win->HandleWindowEvent(eventFocus);
}
return FALSE;
}
}
//-----------------------------------------------------------------------------
// "focus_out_event"
//-----------------------------------------------------------------------------
extern "C" {
static gint gtk_listitem_focus_out_callback( GtkWidget *WXUNUSED(widget),
GdkEventFocus *WXUNUSED(gdk_event),
wxWindowGTK *win )
{
if (g_isIdle)
wxapp_install_idle_handler();
g_focusWindow = NULL;
// don't send the window a kill focus event if it thinks that it doesn't
// have focus already
if ( win->m_hasFocus )
{
win->m_hasFocus = false;
wxFocusEvent event( wxEVT_KILL_FOCUS, win->GetId() );
event.SetEventObject( win );
// even if we did process the event in wx code, still let GTK itself
// process it too as otherwise bad things happen, especially in GTK2
// where the text control simply aborts the program if it doesn't get
// the matching focus out event
(void)win->HandleWindowEvent( event );
}
return FALSE;
}
}
//-----------------------------------------------------------------------------
// "button_release_event"
//-----------------------------------------------------------------------------
/* we would normally emit a wxEVT_LISTBOX_DCLICK event once
a GDK_2BUTTON_PRESS occurs, but this has the particular problem of the
listbox keeping the focus until it receives a GDK_BUTTON_RELEASE event.
this can lead to race conditions so that we emit the dclick event
after the GDK_BUTTON_RELEASE event after the GDK_2BUTTON_PRESS event */
extern "C" {
static gint
gtk_listbox_button_release_callback( GtkWidget * WXUNUSED(widget),
GdkEventButton * WXUNUSED(gdk_event),
wxListBox *listbox )
{
if (g_isIdle) wxapp_install_idle_handler();
if (g_blockEventsOnDrag) return FALSE;
if (g_blockEventsOnScroll) return FALSE;
if (!listbox->m_hasVMT) return FALSE;
if (!g_hasDoubleClicked) return FALSE;
wxCommandEvent event( wxEVT_LISTBOX_DCLICK, listbox->GetId() );
event.SetEventObject( listbox );
wxArrayInt aSelections;
int n, count = listbox->GetSelections(aSelections);
if ( count > 0 )
{
n = aSelections[0];
if ( listbox->HasClientObjectData() )
event.SetClientObject( listbox->GetClientObject(n) );
else if ( listbox->HasClientUntypedData() )
event.SetClientData( listbox->GetClientData(n) );
event.SetString( listbox->GetString(n) );
}
else
{
n = -1;
}
event.SetInt(n);
listbox->HandleWindowEvent( event );
return FALSE;
}
}
//-----------------------------------------------------------------------------
// "button_press_event"
//-----------------------------------------------------------------------------
extern "C" {
static gint
gtk_listbox_button_press_callback( GtkWidget *widget,
GdkEventButton *gdk_event,
wxListBox *listbox )
{
if (g_isIdle) wxapp_install_idle_handler();
if (g_blockEventsOnDrag) return FALSE;
if (g_blockEventsOnScroll) return FALSE;
if (!listbox->m_hasVMT) return FALSE;
int sel = listbox->GtkGetIndex( widget );
#if wxUSE_CHECKLISTBOX
if ((listbox->m_hasCheckBoxes) && (gdk_event->x < 15) && (gdk_event->type != GDK_2BUTTON_PRESS))
{
wxCheckListBox *clb = (wxCheckListBox *)listbox;
clb->Check( sel, !clb->IsChecked(sel) );
wxCommandEvent event( wxEVT_CHECKLISTBOX, listbox->GetId() );
event.SetEventObject( listbox );
event.SetInt( sel );
listbox->HandleWindowEvent( event );
}
#endif // wxUSE_CHECKLISTBOX
if ((gdk_event->state == 0) &&
(((listbox->GetWindowStyleFlag() & wxLB_MULTIPLE) != 0) ||
((listbox->GetWindowStyleFlag() & wxLB_EXTENDED) != 0)) )
{
listbox->m_blockEvent = true;
int i;
for (i = 0; i < (int)listbox->GetCount(); i++)
if (i != sel)
gtk_list_unselect_item( GTK_LIST(listbox->m_list), i );
listbox->m_blockEvent = false;
return false;
}
/* emit wxEVT_LISTBOX_DCLICK later */
g_hasDoubleClicked = (gdk_event->type == GDK_2BUTTON_PRESS);
return FALSE;
}
}
//-----------------------------------------------------------------------------
// "key_press_event"
//-----------------------------------------------------------------------------
extern "C" {
static gint
gtk_listbox_key_press_callback( GtkWidget *widget, GdkEventKey *gdk_event, wxListBox *listbox )
{
if (g_isIdle)
wxapp_install_idle_handler();
if (g_blockEventsOnDrag)
return FALSE;
bool ret = false;
if ((gdk_event->keyval == GDK_Tab) || (gdk_event->keyval == GDK_ISO_Left_Tab))
{
wxNavigationKeyEvent new_event;
/* GDK reports GDK_ISO_Left_Tab for SHIFT-TAB */
new_event.SetDirection( (gdk_event->keyval == GDK_Tab) );
/* CTRL-TAB changes the (parent) window, i.e. switch notebook page */
new_event.SetWindowChange( (gdk_event->state & GDK_CONTROL_MASK) );
new_event.SetCurrentFocus( listbox );
ret = listbox->HandleWindowEvent( new_event );
}
if ((gdk_event->keyval == GDK_Return) && (!ret))
{
// eat return in all modes
ret = true;
}
#if wxUSE_CHECKLISTBOX
if ((gdk_event->keyval == ' ') && (listbox->m_hasCheckBoxes) && (!ret))
{
int sel = listbox->GtkGetIndex( widget );
wxCheckListBox *clb = (wxCheckListBox *)listbox;
clb->Check( sel, !clb->IsChecked(sel) );
wxCommandEvent new_event( wxEVT_CHECKLISTBOX, listbox->GetId() );
new_event.SetEventObject( listbox );
new_event.SetInt( sel );
ret = listbox->HandleWindowEvent( new_event );
}
#endif // wxUSE_CHECKLISTBOX
// Check or uncheck item with SPACE
if ((gdk_event->keyval == ' ') && (!ret) &&
(((listbox->GetWindowStyleFlag() & wxLB_MULTIPLE) != 0) ||
((listbox->GetWindowStyleFlag() & wxLB_EXTENDED) != 0)) )
{
int sel = listbox->GtkGetIndex( widget );
if (sel != -1)
{
ret = true;
if (listbox->IsSelected( sel ))
gtk_list_unselect_item( listbox->m_list, sel );
else
gtk_list_select_item( listbox->m_list, sel );
wxCommandEvent new_event(wxEVT_LISTBOX, listbox->GetId() );
new_event.SetEventObject( listbox );
wxArrayInt aSelections;
int n, count = listbox->GetSelections(aSelections);
if ( count > 0 )
{
n = aSelections[0];
if ( listbox->HasClientObjectData() )
new_event.SetClientObject( listbox->GetClientObject(n) );
else if ( listbox->HasClientUntypedData() )
new_event.SetClientData( listbox->GetClientData(n) );
new_event.SetString( listbox->GetString(n) );
}
else
{
n = -1;
}
new_event.SetInt(n);
listbox->HandleWindowEvent( new_event );
}
}
if (ret)
{
gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "key_press_event" );
return TRUE;
}
return FALSE;
}
}
//-----------------------------------------------------------------------------
// "select" and "deselect"
//-----------------------------------------------------------------------------
static void gtk_listitem_select_cb( GtkWidget *widget,
wxListBox *listbox,
bool is_selection )
{
if (g_isIdle) wxapp_install_idle_handler();
if (!listbox->m_hasVMT) return;
if (g_blockEventsOnDrag) return;
if (listbox->m_blockEvent) return;
wxCommandEvent event(wxEVT_LISTBOX, listbox->GetId() );
event.SetEventObject( listbox );
// indicate whether this is a selection or a deselection
event.SetExtraLong( is_selection );
if ((listbox->GetWindowStyleFlag() & wxLB_SINGLE) != 0)
{
int sel = listbox->GtkGetIndex( widget );
if (listbox->m_prevSelection != sel)
gtk_list_unselect_item( listbox->m_list, listbox->m_prevSelection );
listbox->m_prevSelection = sel;
}
wxArrayInt aSelections;
int n, count = listbox->GetSelections(aSelections);
if ( count > 0 )
{
n = aSelections[0];
if ( listbox->HasClientObjectData() )
event.SetClientObject( listbox->GetClientObject(n) );
else if ( listbox->HasClientUntypedData() )
event.SetClientData( listbox->GetClientData(n) );
event.SetString( listbox->GetString(n) );
}
else
{
n = -1;
}
event.SetInt(n);
// No longer required with new code in wxLB_SINGLE
// listbox->GetEventHandler()->AddPendingEvent( event );
listbox->HandleWindowEvent( event );
}
extern "C" {
static void gtk_listitem_select_callback( GtkWidget *widget, wxListBox *listbox )
{
gtk_listitem_select_cb( widget, listbox, TRUE );
}
}
extern "C" {
static void gtk_listitem_deselect_callback( GtkWidget *widget, wxListBox *listbox )
{
gtk_listitem_select_cb( widget, listbox, FALSE );
}
}
//-----------------------------------------------------------------------------
// wxListBox
//-----------------------------------------------------------------------------
extern "C" {
static gint
gtk_listbox_realized_callback( GtkWidget *WXUNUSED(widget), wxListBox *win )
{
if (g_isIdle)
wxapp_install_idle_handler();
GList *child = win->m_list->children;
for (child = win->m_list->children; child != NULL; child = child->next)
gtk_widget_show( GTK_WIDGET(child->data) );
return false;
}
}
//-----------------------------------------------------------------------------
// wxListBox
//-----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// construction
// ----------------------------------------------------------------------------
wxListBox::wxListBox()
{
m_list = NULL;
#if wxUSE_CHECKLISTBOX
m_hasCheckBoxes = false;
#endif // wxUSE_CHECKLISTBOX
}
bool wxListBox::Create( wxWindow *parent, wxWindowID id,
const wxPoint &pos, const wxSize &size,
const wxArrayString& choices,
long style, const wxValidator& validator,
const wxString &name )
{
wxCArrayString chs(choices);
return Create( parent, id, pos, size, chs.GetCount(), chs.GetStrings(),
style, validator, name );
}
bool wxListBox::Create( wxWindow *parent, wxWindowID id,
const wxPoint &pos, const wxSize &size,
int n, const wxString choices[],
long style, const wxValidator& validator,
const wxString &name )
{
m_needParent = true;
m_acceptsFocus = true;
m_prevSelection = 0; // or -1 ??
m_blockEvent = false;
if (!PreCreation( parent, pos, size ) ||
!CreateBase( parent, id, pos, size, style, validator, name ))
{
wxFAIL_MSG( wxT("wxListBox creation failed") );
return false;
}
m_widget = gtk_scrolled_window_new( NULL, NULL );
if (style & wxLB_ALWAYS_SB)
{
gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS );
}
else
{
gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
}
m_list = GTK_LIST( gtk_list_new() );
GtkSelectionMode mode;
if (style & wxLB_MULTIPLE)
{
mode = GTK_SELECTION_MULTIPLE;
}
else if (style & wxLB_EXTENDED)
{
mode = GTK_SELECTION_EXTENDED;
}
else
{
// if style was 0 set single mode
m_windowStyle |= wxLB_SINGLE;
mode = GTK_SELECTION_SINGLE;
}
gtk_list_set_selection_mode( GTK_LIST(m_list), mode );
gtk_scrolled_window_add_with_viewport( GTK_SCROLLED_WINDOW(m_widget), GTK_WIDGET(m_list) );
/* make list scroll when moving the focus down using cursor keys */
gtk_container_set_focus_vadjustment(
GTK_CONTAINER(m_list),
gtk_scrolled_window_get_vadjustment(
GTK_SCROLLED_WINDOW(m_widget)));
gtk_widget_show( GTK_WIDGET(m_list) );
gtk_signal_connect( GTK_OBJECT(m_list), "realize",
GTK_SIGNAL_FUNC(gtk_listbox_realized_callback), (gpointer) this );
if ( style & wxLB_SORT )
{
// this will change Append() behaviour
m_strings = new wxSortedArrayString(wxDictionaryStringSortAscending);
}
else
{
m_strings = NULL;
}
Append(n, choices);
m_parent->DoAddChild( this );
PostCreation(size);
SetInitialSize(size); // need this too because this is a wxControlWithItems
return true;
}
wxListBox::~wxListBox()
{
m_hasVMT = false;
Clear();
delete m_strings;
}
// ----------------------------------------------------------------------------
// adding items
// ----------------------------------------------------------------------------
int wxListBox::DoInsertItems(const wxArrayStringsAdapter& items,
unsigned int pos,
void **clientData,
wxClientDataType type)
{
wxCHECK_MSG( m_list != NULL, wxNOT_FOUND, wxT("invalid listbox") );
const unsigned count = GetCount();
wxCHECK_MSG( pos <= count, wxNOT_FOUND,
wxT("invalid index in wxListBox::InsertItems") );
// code elsewhere supposes we have as many items in m_clientList as items
// in the listbox
wxASSERT_MSG( m_clientList.GetCount() == count,
wxT("bug in client data management") );
InvalidateBestSize();
const unsigned numItems = items.GetCount();
for ( unsigned int n = 0; n < numItems; ++n, ++pos )
{
const wxString& item = items[n];
const unsigned idx = m_strings ? m_strings->Add(item)
: pos;
GtkAddItem(item, idx == GetCount() ? (unsigned) -1 : idx);
m_clientList.Insert(idx, NULL);
AssignNewItemClientData(idx, clientData, n, type);
}
wxASSERT_MSG( m_clientList.GetCount() == GetCount(),
wxT("bug in client data management") );
return pos - 1;
}
void wxListBox::GtkAddItem( const wxString &item, int pos )
{
wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
GtkWidget *list_item;
wxString label(item);
#if wxUSE_CHECKLISTBOX
if (m_hasCheckBoxes)
{
label.Prepend(wxCHECKLBOX_STRING);
}
#endif // wxUSE_CHECKLISTBOX
list_item = gtk_list_item_new_with_label( wxGTK_CONV( label ) );
GList *gitem_list = g_list_alloc ();
gitem_list->data = list_item;
if (pos == -1)
gtk_list_append_items( GTK_LIST (m_list), gitem_list );
else
gtk_list_insert_items( GTK_LIST (m_list), gitem_list, pos );
gtk_signal_connect_after( GTK_OBJECT(list_item), "select",
GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
if (HasFlag(wxLB_MULTIPLE) || HasFlag(wxLB_EXTENDED))
gtk_signal_connect_after( GTK_OBJECT(list_item), "deselect",
GTK_SIGNAL_FUNC(gtk_listitem_deselect_callback), (gpointer)this );
gtk_signal_connect( GTK_OBJECT(list_item),
"button_press_event",
(GtkSignalFunc)gtk_listbox_button_press_callback,
(gpointer) this );
gtk_signal_connect_after( GTK_OBJECT(list_item),
"button_release_event",
(GtkSignalFunc)gtk_listbox_button_release_callback,
(gpointer) this );
gtk_signal_connect( GTK_OBJECT(list_item),
"key_press_event",
(GtkSignalFunc)gtk_listbox_key_press_callback,
(gpointer)this );
gtk_signal_connect( GTK_OBJECT(list_item), "focus_in_event",
GTK_SIGNAL_FUNC(gtk_listitem_focus_in_callback), (gpointer)this );
gtk_signal_connect( GTK_OBJECT(list_item), "focus_out_event",
GTK_SIGNAL_FUNC(gtk_listitem_focus_out_callback), (gpointer)this );
ConnectWidget( list_item );
if (GTK_WIDGET_REALIZED(m_widget))
{
gtk_widget_show( list_item );
gtk_widget_realize( list_item );
gtk_widget_realize( GTK_BIN(list_item)->child );
#if wxUSE_TOOLTIPS
if (m_tooltip) m_tooltip->Apply( this );
#endif
}
// Apply current widget style to the new list_item
GtkRcStyle *style = CreateWidgetStyle();
if (style)
{
gtk_widget_modify_style( GTK_WIDGET( list_item ), style );
GtkBin *bin = GTK_BIN( list_item );
gtk_widget_modify_style( GTK_WIDGET( bin->child ), style );
gtk_rc_style_unref( style );
}
}
// ----------------------------------------------------------------------------
// deleting items
// ----------------------------------------------------------------------------
void wxListBox::DoClear()
{
wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
gtk_list_clear_items( m_list, 0, (int)GetCount() );
if ( GTK_LIST(m_list)->last_focus_child != NULL )
{
// This should be NULL, I think.
GTK_LIST(m_list)->last_focus_child = NULL;
}
m_clientList.Clear();
if ( m_strings )
m_strings->Clear();
}
void wxListBox::DoDeleteOneItem(unsigned int n)
{
wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
GList *child = g_list_nth( m_list->children, n );
wxCHECK_RET( child, wxT("wrong listbox index") );
GList *list = g_list_append( NULL, child->data );
gtk_list_remove_items( m_list, list );
g_list_free( list );
wxList::compatibility_iterator node = m_clientList.Item( n );
if ( node )
{
m_clientList.Erase( node );
}
if ( m_strings )
m_strings->RemoveAt(n);
}
// ----------------------------------------------------------------------------
// client data
// ----------------------------------------------------------------------------
void wxListBox::DoSetItemClientData(unsigned int n, void* clientData)
{
wxCHECK_RET( m_widget != NULL, wxT("invalid listbox control") );
wxList::compatibility_iterator node = m_clientList.Item( n );
wxCHECK_RET( node, wxT("invalid index in wxListBox::DoSetItemClientData") );
node->SetData( (wxObject*) clientData );
}
void* wxListBox::DoGetItemClientData(unsigned int n) const
{
wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid listbox control") );
wxList::compatibility_iterator node = m_clientList.Item( n );
wxCHECK_MSG( node, NULL, wxT("invalid index in wxListBox::DoGetItemClientData") );
return node->GetData();
}
// ----------------------------------------------------------------------------
// string list access
// ----------------------------------------------------------------------------
wxString wxListBox::GetRealLabel(GList *item) const
{
GtkBin *bin = GTK_BIN( item->data );
GtkLabel *label = GTK_LABEL( bin->child );
wxString str;
str = wxString( label->label );
#if wxUSE_CHECKLISTBOX
// checklistboxes have "[±] " prepended to their lables, remove it
//
// NB: 4 below is the length of wxCHECKLBOX_STRING from wx/gtk1/checklst.h
if ( m_hasCheckBoxes )
str.erase(0, 4);
#endif // wxUSE_CHECKLISTBOX
return str;
}
void wxListBox::SetString(unsigned int n, const wxString &string)
{
wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
GList *child = g_list_nth( m_list->children, n );
if (child)
{
GtkBin *bin = GTK_BIN( child->data );
GtkLabel *label = GTK_LABEL( bin->child );
wxString str;
#if wxUSE_CHECKLISTBOX
if (m_hasCheckBoxes)
str += wxCHECKLBOX_STRING;
#endif // wxUSE_CHECKLISTBOX
str += string;
gtk_label_set( label, wxGTK_CONV( str ) );
}
else
{
wxFAIL_MSG(wxT("wrong listbox index"));
}
}
wxString wxListBox::GetString(unsigned int n) const
{
wxCHECK_MSG( m_list != NULL, wxEmptyString, wxT("invalid listbox") );
GList *child = g_list_nth( m_list->children, n );
if (child)
{
return GetRealLabel(child);
}
wxFAIL_MSG(wxT("wrong listbox index"));
return wxEmptyString;
}
unsigned int wxListBox::GetCount() const
{
wxCHECK_MSG( m_list != NULL, 0, wxT("invalid listbox") );
GList *children = m_list->children;
return g_list_length(children);
}
int wxListBox::FindString( const wxString &item, bool bCase ) const
{
wxCHECK_MSG( m_list != NULL, wxNOT_FOUND, wxT("invalid listbox") );
GList *child = m_list->children;
int count = 0;
while (child)
{
if ( item.IsSameAs( GetRealLabel(child), bCase ) )
return count;
count++;
child = child->next;
}
// it's not an error if the string is not found -> no wxCHECK
return wxNOT_FOUND;
}
// ----------------------------------------------------------------------------
// selection
// ----------------------------------------------------------------------------
int wxListBox::GetSelection() const
{
wxCHECK_MSG( m_list != NULL, wxNOT_FOUND, wxT("invalid listbox") );
GList *child = m_list->children;
int count = 0;
while (child)
{
if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED) return count;
count++;
child = child->next;
}
return wxNOT_FOUND;
}
int wxListBox::GetSelections( wxArrayInt& aSelections ) const
{
wxCHECK_MSG( m_list != NULL, wxNOT_FOUND, wxT("invalid listbox") );
// get the number of selected items first
GList *child = m_list->children;
int count = 0;
for (child = m_list->children; child != NULL; child = child->next)
{
if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED)
count++;
}
aSelections.Empty();
if (count > 0)
{
// now fill the list
aSelections.Alloc(count); // optimization attempt
int i = 0;
for (child = m_list->children; child != NULL; child = child->next, i++)
{
if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED)
aSelections.Add(i);
}
}
return count;
}
bool wxListBox::IsSelected( int n ) const
{
wxCHECK_MSG( m_list != NULL, false, wxT("invalid listbox") );
GList *target = g_list_nth( m_list->children, n );
wxCHECK_MSG( target, false, wxT("invalid listbox index") );
return (GTK_WIDGET(target->data)->state == GTK_STATE_SELECTED) ;
}
void wxListBox::DoSetSelection( int n, bool select )
{
wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
m_blockEvent = true;
if (select)
{
if ((m_windowStyle & wxLB_SINGLE) != 0)
gtk_list_unselect_item( m_list, m_prevSelection );
gtk_list_select_item( m_list, n );
m_prevSelection = n;
}
else
gtk_list_unselect_item( m_list, n );
m_blockEvent = false;
}
void wxListBox::DoSetFirstItem( int n )
{
wxCHECK_RET( m_list, wxT("invalid listbox") );
if (gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (m_list))
return;
// terribly efficient
const gchar *vadjustment_key = "gtk-vadjustment";
guint vadjustment_key_id = g_quark_from_static_string (vadjustment_key);
GtkAdjustment *adjustment =
(GtkAdjustment*) gtk_object_get_data_by_id (GTK_OBJECT (m_list), vadjustment_key_id);
wxCHECK_RET( adjustment, wxT("invalid listbox code") );
GList *target = g_list_nth( m_list->children, n );
wxCHECK_RET( target, wxT("invalid listbox index") );
GtkWidget *item = GTK_WIDGET(target->data);
wxCHECK_RET( item, wxT("invalid listbox code") );
if (item->allocation.y == -1)
{
wxlistbox_idle_struct* data = new wxlistbox_idle_struct;
data->m_listbox = this;
data->m_item = n;
data->m_tag = gtk_idle_add_priority( 800, wxlistbox_idle_callback, (gpointer) data );
return;
}
float y = item->allocation.y;
if (y > adjustment->upper - adjustment->page_size)
y = adjustment->upper - adjustment->page_size;
gtk_adjustment_set_value( adjustment, y );
}
// ----------------------------------------------------------------------------
// helpers
// ----------------------------------------------------------------------------
int wxListBox::GtkGetIndex( GtkWidget *item ) const
{
if (item)
{
GList *child = m_list->children;
int count = 0;
while (child)
{
if (GTK_WIDGET(child->data) == item) return count;
count++;
child = child->next;
}
}
return -1;
}
#if wxUSE_TOOLTIPS
void wxListBox::ApplyToolTip( GtkTooltips *tips, const wxChar *tip )
{
GList *child = m_list->children;
while (child)
{
gtk_tooltips_set_tip( tips, GTK_WIDGET( child->data ), wxConvCurrent->cWX2MB(tip), NULL );
child = child->next;
}
}
#endif // wxUSE_TOOLTIPS
GtkWidget *wxListBox::GetConnectWidget()
{
// return GTK_WIDGET(m_list);
return m_widget;
}
bool wxListBox::IsOwnGtkWindow( GdkWindow *window )
{
return m_widget->window == window ||
GTK_WIDGET(m_list)->window == window;
}
void wxListBox::DoApplyWidgetStyle(GtkRcStyle *style)
{
if (m_hasBgCol && m_backgroundColour.IsOk())
{
GdkWindow *window = GTK_WIDGET(m_list)->window;
if ( window )
{
m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
gdk_window_set_background( window, m_backgroundColour.GetColor() );
gdk_window_clear( window );
}
}
GList *child = m_list->children;
while (child)
{
gtk_widget_modify_style( GTK_WIDGET(child->data), style );
GtkBin *bin = GTK_BIN( child->data );
GtkWidget *label = GTK_WIDGET( bin->child );
gtk_widget_modify_style( label, style );
child = child->next;
}
}
void wxListBox::OnInternalIdle()
{
wxCursor cursor = m_cursor;
if (g_globalCursor.IsOk()) cursor = g_globalCursor;
if (GTK_WIDGET(m_list)->window && cursor.IsOk())
{
/* I now set the cursor the anew in every OnInternalIdle call
as setting the cursor in a parent window also effects the
windows above so that checking for the current cursor is
not possible. */
gdk_window_set_cursor( GTK_WIDGET(m_list)->window, cursor.GetCursor() );
GList *child = m_list->children;
while (child)
{
GtkBin *bin = GTK_BIN( child->data );
GtkWidget *label = GTK_WIDGET( bin->child );
if (!label->window)
break;
else
gdk_window_set_cursor( label->window, cursor.GetCursor() );
child = child->next;
}
}
if (g_delayedFocus == this)
{
if (GTK_WIDGET_REALIZED(m_widget))
{
gtk_widget_grab_focus( m_widget );
g_delayedFocus = NULL;
}
}
if (wxUpdateUIEvent::CanUpdate(this))
UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
}
wxSize wxListBox::DoGetBestSize() const
{
int lbWidth = 100; // some defaults
int lbHeight = 110;
int wLine;
// Find the widest line
for(unsigned int i = 0; i < GetCount(); i++) {
wxString str(GetString(i));
GetTextExtent(str, &wLine, NULL);
lbWidth = wxMax(lbWidth, wLine);
}
// Add room for the scrollbar
lbWidth += wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
// And just a bit more
int cx, cy;
GetTextExtent( wxT("X"), &cx, &cy);
lbWidth += 3 * cx;
// don't make the listbox too tall (limit height to around 10 items) but don't
// make it too small neither
lbHeight = (cy+4) * wxMin(wxMax(GetCount(), 3), 10);
return wxSize(lbWidth, lbHeight);
}
void wxListBox::FixUpMouseEvent(GtkWidget *widget, wxCoord& x, wxCoord& y)
{
// the mouse event coords are relative to the listbox items, we need to
// translate them to the normal client coords
x += widget->allocation.x;
y += widget->allocation.y;
}
// static
wxVisualAttributes
wxListBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
{
return GetDefaultAttributesFromGTKWidget(gtk_list_new, true);
}
#endif // wxUSE_LISTBOX
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