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Move event generation code for multiple selection mode to common code

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@53715 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling
2008-05-23 10:12:50 +00:00
parent 794b89c956
commit 05d790f834
4 changed files with 117 additions and 107 deletions
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3
include/wx/gtk/listbox.h
View File

@@ -98,9 +98,6 @@ public:
void GtkDisableEvents();
void GtkEnableEvents();
wxArrayInt m_oldSelection;
void GtkUpdateOldSelection();
protected:
virtual void DoClear();
virtual void DoDeleteOneItem(unsigned int n);

5
include/wx/listbox.h
View File

@@ -94,6 +94,11 @@ public:
// returns the item number at a point or wxNOT_FOUND
int HitTest(const wxPoint& point) const { return DoListHitTest(point); }
// For generating events in multiple and extended mode
wxArrayInt m_oldSelections;
void UpdateOldSelections();
void CalcAndSendEvent();
protected:
virtual void DoSetFirstItem(int n) = 0;

106
src/common/lboxcmn.cpp
View File

@@ -82,6 +82,112 @@ void wxListBoxBase::DeselectAll(int itemToLeaveSelected)
}
}
void wxListBoxBase::UpdateOldSelections()
{
if (HasFlag(wxLB_MULTIPLE) || HasFlag(wxLB_EXTENDED))
GetSelections( m_oldSelections );
}
static void LBSendEvent( wxCommandEvent &event, wxListBoxBase *listbox, int item )
{
event.SetInt( item );
event.SetString( listbox->GetString( item ) );
if ( listbox->HasClientObjectData() )
event.SetClientObject( listbox->GetClientObject(item) );
else if ( listbox->HasClientUntypedData() )
event.SetClientData( listbox->GetClientData(item) );
listbox->HandleWindowEvent( event );
}
void wxListBoxBase::CalcAndSendEvent()
{
wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, GetId() );
event.SetEventObject( this );
wxArrayInt selections;
GetSelections( selections );
if ((selections.GetCount() == 0) && (m_oldSelections.GetCount() == 0))
{
// nothing changed, just leave
return;
}
if (selections.GetCount() == m_oldSelections.GetCount())
{
bool changed = false;
size_t idx;
for (idx = 0; idx < selections.GetCount(); idx++)
{
if (selections[idx] != m_oldSelections[idx])
{
changed = true;
break;
}
}
// nothing changed, just leave
if (!changed)
return;
}
if (selections.GetCount() == 0)
{
// indicate that this is a deselection
event.SetExtraLong( 0 );
int item = m_oldSelections[0];
m_oldSelections = selections;
LBSendEvent( event, this, item );
return;
}
int item;
// Now test if any new item is selected
bool any_new_selected = false;
size_t idx;
for (idx = 0; idx < selections.GetCount(); idx++)
{
item = selections[idx];
if (m_oldSelections.Index(item) == wxNOT_FOUND)
{
any_new_selected = true;
break;
}
}
if (any_new_selected)
{
// indicate that this is a selection
event.SetExtraLong( 1 );
m_oldSelections = selections;
LBSendEvent( event, this, item );
return;
}
// Now test if any new item is deselected
bool any_new_deselected = false;
for (idx = 0; idx < m_oldSelections.GetCount(); idx++)
{
item = m_oldSelections[idx];
if (selections.Index(item) == wxNOT_FOUND)
{
any_new_deselected = true;
break;
}
}
if (any_new_deselected)
{
// indicate that this is a selection
event.SetExtraLong( 0 );
m_oldSelections = selections;
LBSendEvent( event, this, item );
return;
}
wxLogError( wxT("Wrong wxListBox selection") );
}
// ----------------------------------------------------------------------------
// misc
// ----------------------------------------------------------------------------

108
src/gtk/listbox.cpp
View File

@@ -112,17 +112,6 @@ gtk_listbox_row_activated_callback(GtkTreeView * WXUNUSED(treeview),
// "changed"
//-----------------------------------------------------------------------------
static void SendEvent( wxCommandEvent &event, wxListBox *listbox, int item )
{
event.SetInt( item );
event.SetString( listbox->GetString( item ) );
if ( listbox->HasClientObjectData() )
event.SetClientObject( listbox->GetClientObject(item) );
else if ( listbox->HasClientUntypedData() )
event.SetClientData( listbox->GetClientData(item) );
listbox->HandleWindowEvent( event );
}
extern "C" {
static void
gtk_listitem_changed_callback(GtkTreeSelection * WXUNUSED(selection),
@@ -130,96 +119,15 @@ gtk_listitem_changed_callback(GtkTreeSelection * WXUNUSED(selection),
{
if (g_blockEventsOnDrag) return;
wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, listbox->GetId() );
event.SetEventObject( listbox );
if (listbox->HasFlag(wxLB_MULTIPLE) || listbox->HasFlag(wxLB_EXTENDED))
{
wxArrayInt selections;
listbox->GetSelections( selections );
if ((selections.GetCount() == 0) && (listbox->m_oldSelection.GetCount() == 0))
{
// nothing changed, just leave
return;
}
if (selections.GetCount() == listbox->m_oldSelection.GetCount())
{
bool changed = false;
size_t idx;
for (idx = 0; idx < selections.GetCount(); idx++)
{
if (selections[idx] != listbox->m_oldSelection[idx])
{
changed = true;
break;
}
}
// nothing changed, just leave
if (!changed)
return;
}
if (selections.GetCount() == 0)
{
// indicate that this is a deselection
event.SetExtraLong( 0 );
int item = listbox->m_oldSelection[0];
listbox->m_oldSelection = selections;
SendEvent( event, listbox, item );
return;
}
int item;
// Now test if any new item is selected
bool any_new_selected = false;
size_t idx;
for (idx = 0; idx < selections.GetCount(); idx++)
{
item = selections[idx];
if (listbox->m_oldSelection.Index(item) == wxNOT_FOUND)
{
any_new_selected = true;
break;
}
}
if (any_new_selected)
{
// indicate that this is a selection
event.SetExtraLong( 1 );
listbox->m_oldSelection = selections;
SendEvent( event, listbox, item );
return;
}
// Now test if any new item is deselected
bool any_new_deselected = false;
for (idx = 0; idx < listbox->m_oldSelection.GetCount(); idx++)
{
item = listbox->m_oldSelection[idx];
if (selections.Index(item) == wxNOT_FOUND)
{
any_new_deselected = true;
break;
}
}
if (any_new_deselected)
{
// indicate that this is a selection
event.SetExtraLong( 0 );
listbox->m_oldSelection = selections;
SendEvent( event, listbox, item );
return;
}
wxLogError( wxT("Wrong wxListBox selection") );
listbox->CalcAndSendEvent();
}
else
{
wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, listbox->GetId() );
event.SetEventObject( listbox );
int index = listbox->GetSelection();
if (index == wxNOT_FOUND)
{
@@ -588,7 +496,7 @@ void wxListBox::GtkEnableEvents()
g_signal_handlers_unblock_by_func(selection,
(gpointer) gtk_listitem_changed_callback, this);
GtkUpdateOldSelection();
UpdateOldSelections();
}
// ----------------------------------------------------------------------------
@@ -920,12 +828,6 @@ void wxListBox::DoSetSelection( int n, bool select )
GtkEnableEvents();
}
void wxListBox::GtkUpdateOldSelection()
{
if (HasFlag(wxLB_MULTIPLE) || HasFlag(wxLB_EXTENDED))
GetSelections( m_oldSelection );
}
void wxListBox::DoScrollToCell(int n, float alignY, float alignX)
{
wxCHECK_RET( m_treeview, wxT("invalid listbox") );