simplify code to return from the end of the function
[wxWidgets.git] / src / gtk / combobox.cpp
index 88a9c2fd29bede3eaaf6ee46387e8067fc08e4e3..40c437fa2334029f7c43780406693d18fde347ea 100644 (file)
@@ -21,7 +21,9 @@
     #include "wx/arrstr.h"
 #endif
 
+#include <gtk/gtk.h>
 #include "wx/gtk/private.h"
+#include "wx/gtk/private/gtk2-compat.h"
 
 // ----------------------------------------------------------------------------
 // GTK callbacks
@@ -31,8 +33,6 @@ extern "C" {
 static void
 gtkcombobox_text_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
 {
-    if (!combo->m_hasVMT) return;
-
     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
     event.SetString( combo->GetValue() );
     event.SetEventObject( combo );
@@ -44,14 +44,27 @@ gtkcombobox_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
 {
     combo->SendSelectionChangedEvent(wxEVT_COMMAND_COMBOBOX_SELECTED);
 }
+
+static void
+gtkcombobox_popupshown_callback(GObject *WXUNUSED(gobject),
+                                GParamSpec *WXUNUSED(param_spec),
+                                wxComboBox *combo)
+{
+    gboolean isShown;
+    g_object_get( combo->m_widget, "popup-shown", &isShown, NULL );
+    wxCommandEvent event( isShown ? wxEVT_COMMAND_COMBOBOX_DROPDOWN
+                                  : wxEVT_COMMAND_COMBOBOX_CLOSEUP,
+                          combo->GetId() );
+    event.SetEventObject( combo );
+    combo->HandleWindowEvent( event );
+}
+
 }
 
 //-----------------------------------------------------------------------------
 // wxComboBox
 //-----------------------------------------------------------------------------
 
-IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxChoice)
-
 BEGIN_EVENT_TABLE(wxComboBox, wxChoice)
     EVT_CHAR(wxComboBox::OnChar)
 
@@ -72,6 +85,17 @@ BEGIN_EVENT_TABLE(wxComboBox, wxChoice)
     EVT_UPDATE_UI(wxID_SELECTALL, wxComboBox::OnUpdateSelectAll)
 END_EVENT_TABLE()
 
+wxComboBox::~wxComboBox()
+{
+    if (m_entry)
+        GTKDisconnect(m_entry);
+}
+
+void wxComboBox::Init()
+{
+    m_entry = NULL;
+}
+
 bool wxComboBox::Create( wxWindow *parent, wxWindowID id,
                          const wxString& value,
                          const wxPoint& pos, const wxSize& size,
@@ -91,8 +115,6 @@ bool wxComboBox::Create( wxWindow *parent, wxWindowID id, const wxString& value,
                          long style, const wxValidator& validator,
                          const wxString& name )
 {
-    m_strings = NULL;
-
     if (!PreCreation( parent, pos, size ) ||
         !CreateBase( parent, id, pos, size, style, validator, name ))
     {
@@ -101,14 +123,9 @@ bool wxComboBox::Create( wxWindow *parent, wxWindowID id, const wxString& value,
     }
 
     if (HasFlag(wxCB_SORT))
-        m_strings = new wxSortedArrayString();
+        m_strings = new wxGtkCollatedArrayString();
 
-    m_widget = gtk_combo_box_entry_new_text();
-
-    // Set it up to trigger default item on enter key press
-    GtkWidget *widget = gtk_bin_get_child(GTK_BIN(m_widget));
-    gtk_entry_set_activates_default(GTK_ENTRY(widget),
-                                    !HasFlag(wxTE_PROCESS_ENTER));
+    GTKCreateComboBoxWidget();
 
     if (HasFlag(wxBORDER_NONE))
     {
@@ -118,40 +135,76 @@ bool wxComboBox::Create( wxWindow *parent, wxWindowID id, const wxString& value,
 
     GtkEntry * const entry = GetEntry();
 
-    gtk_entry_set_editable( entry, TRUE );
+    if ( entry )
+    {
+        // Set it up to trigger default item on enter key press
+        gtk_entry_set_activates_default( entry,
+                                         !HasFlag(wxTE_PROCESS_ENTER) );
+
+        gtk_editable_set_editable(GTK_EDITABLE(entry), true);
+    }
 
     Append(n, choices);
 
     m_parent->DoAddChild( this );
 
-    m_focusWidget = GTK_WIDGET( entry );
+    if ( entry )
+        m_focusWidget = GTK_WIDGET( entry );
 
     PostCreation(size);
 
-    gtk_entry_set_text( entry, wxGTK_CONV(value) );
-
-    if (style & wxCB_READONLY)
-        gtk_entry_set_editable( entry, FALSE );
-
-    g_signal_connect_after (entry, "changed",
-                        G_CALLBACK (gtkcombobox_text_changed_callback), this);
+    if ( entry )
+    {
+        if (style & wxCB_READONLY)
+        {
+            // this will assert and do nothing if the value is not in our list
+            // of strings which is the desired behaviour (for consistency with
+            // wxMSW and also because it doesn't make sense to have a string
+            // which is not a possible choice in a read-only combobox)
+            SetStringSelection(value);
+            gtk_editable_set_editable(GTK_EDITABLE(entry), false);
+        }
+        else // editable combobox
+        {
+            // any value is accepted, even if it's not in our list
+            gtk_entry_set_text( entry, wxGTK_CONV(value) );
+        }
+
+        g_signal_connect_after (entry, "changed",
+                                G_CALLBACK (gtkcombobox_text_changed_callback), this);
+
+        GTKConnectClipboardSignals(GTK_WIDGET(entry));
+    }
 
     g_signal_connect_after (m_widget, "changed",
                         G_CALLBACK (gtkcombobox_changed_callback), this);
 
-    SetInitialSize(size); // need this too because this is a wxControlWithItems
+#ifndef __WXGTK3__
+    if ( !gtk_check_version(2,10,0) )
+#endif
+    {
+        g_signal_connect (m_widget, "notify::popup-shown",
+                          G_CALLBACK (gtkcombobox_popupshown_callback), this);
+    }
 
     return true;
 }
 
-GtkEntry *wxComboBox::GetEntry() const
+void wxComboBox::GTKCreateComboBoxWidget()
 {
-    return GTK_ENTRY(GTK_BIN(m_widget)->child);
+#ifdef __WXGTK3__
+    m_widget = gtk_combo_box_text_new_with_entry();
+#else
+    m_widget = gtk_combo_box_entry_new_text();
+#endif
+    g_object_ref(m_widget);
+
+    m_entry = GTK_ENTRY(gtk_bin_get_child(GTK_BIN(m_widget)));
 }
 
 GtkEditable *wxComboBox::GetEditable() const
 {
-    return GTK_EDITABLE( GTK_BIN(m_widget)->child );
+    return GTK_EDITABLE(gtk_bin_get_child(GTK_BIN(m_widget)));
 }
 
 void wxComboBox::OnChar( wxKeyEvent &event )
@@ -159,7 +212,7 @@ void wxComboBox::OnChar( wxKeyEvent &event )
     switch ( event.GetKeyCode() )
     {
         case WXK_RETURN:
-            if ( HasFlag(wxTE_PROCESS_ENTER) )
+            if ( HasFlag(wxTE_PROCESS_ENTER) && GetEntry() )
             {
                 // GTK automatically selects an item if its in the list
                 wxCommandEvent eventEnter(wxEVT_COMMAND_TEXT_ENTER, GetId());
@@ -180,22 +233,41 @@ void wxComboBox::OnChar( wxKeyEvent &event )
     event.Skip();
 }
 
-void wxComboBox::DisableEvents()
+void wxComboBox::EnableTextChangedEvents(bool enable)
+{
+    if ( !GetEntry() )
+        return;
+
+    if ( enable )
+    {
+        g_signal_handlers_unblock_by_func(gtk_bin_get_child(GTK_BIN(m_widget)),
+            (gpointer)gtkcombobox_text_changed_callback, this);
+    }
+    else // disable
+    {
+        g_signal_handlers_block_by_func(gtk_bin_get_child(GTK_BIN(m_widget)),
+            (gpointer)gtkcombobox_text_changed_callback, this);
+    }
+}
+
+void wxComboBox::GTKDisableEvents()
 {
-    g_signal_handlers_block_by_func(GTK_BIN(m_widget)->child,
-        (gpointer)gtkcombobox_text_changed_callback, this);
+    EnableTextChangedEvents(false);
 
     g_signal_handlers_block_by_func(m_widget,
         (gpointer)gtkcombobox_changed_callback, this);
+    g_signal_handlers_block_by_func(m_widget,
+        (gpointer)gtkcombobox_popupshown_callback, this);
 }
 
-void wxComboBox::EnableEvents()
+void wxComboBox::GTKEnableEvents()
 {
-    g_signal_handlers_unblock_by_func(GTK_BIN(m_widget)->child,
-        (gpointer)gtkcombobox_text_changed_callback, this);
+    EnableTextChangedEvents(true);
 
     g_signal_handlers_unblock_by_func(m_widget,
         (gpointer)gtkcombobox_changed_callback, this);
+    g_signal_handlers_unblock_by_func(m_widget,
+        (gpointer)gtkcombobox_popupshown_callback, this);
 }
 
 GtkWidget* wxComboBox::GetConnectWidget()
@@ -203,18 +275,50 @@ GtkWidget* wxComboBox::GetConnectWidget()
     return GTK_WIDGET( GetEntry() );
 }
 
-GdkWindow *wxComboBox::GTKGetWindow(wxArrayGdkWindows& windows) const
+GdkWindow* wxComboBox::GTKGetWindow(wxArrayGdkWindows& /* windows */) const
 {
-    wxUnusedVar(windows);
-
-    return GetEntry()->text_area;
+#ifdef __WXGTK3__
+    // no access to internal GdkWindows
+    return NULL;
+#else
+    return gtk_entry_get_text_window(GetEntry());
+#endif
 }
 
 // static
 wxVisualAttributes
 wxComboBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 {
-    return GetDefaultAttributesFromGTKWidget(gtk_combo_box_entry_new, true);
+#ifdef __WXGTK3__
+    return GetDefaultAttributesFromGTKWidget(gtk_combo_box_new_with_entry(), true);
+#else
+    return GetDefaultAttributesFromGTKWidget(gtk_combo_box_entry_new(), true);
+#endif
+}
+
+void wxComboBox::SetValue(const wxString& value)
+{
+    if ( HasFlag(wxCB_READONLY) )
+        SetStringSelection(value);
+    else
+        wxTextEntry::SetValue(value);
+}
+
+void wxComboBox::SetString(unsigned int n, const wxString& text)
+{
+    wxChoice::SetString(n, text);
+
+    if ( static_cast<int>(n) == GetSelection() )
+    {
+        // We also need to update the currently shown text, for consistency
+        // with wxMSW and also because it makes sense as leaving the old string
+        // in the text but not in the list would be confusing to the user.
+        SetValue(text);
+
+        // And we need to keep the selection unchanged, modifying the item is
+        // not supposed to deselect it.
+        SetSelection(n);
+    }
 }
 
 // ----------------------------------------------------------------------------
@@ -291,4 +395,30 @@ void wxComboBox::OnUpdateSelectAll(wxUpdateUIEvent& event)
     event.Enable(!wxTextEntry::IsEmpty());
 }
 
+void wxComboBox::Popup()
+{
+     gtk_combo_box_popup( GTK_COMBO_BOX(m_widget) );
+}
+
+void wxComboBox::Dismiss()
+{
+    gtk_combo_box_popdown( GTK_COMBO_BOX(m_widget) );
+}
+
+wxSize wxComboBox::DoGetSizeFromTextSize(int xlen, int ylen) const
+{
+    wxSize tsize( wxChoice::DoGetSizeFromTextSize(xlen, ylen) );
+
+    GtkEntry* entry = GetEntry();
+    if (entry)
+    {
+        // Add the margins we have previously set, but only the horizontal border
+        // as vertical one has been taken account in the previous call.
+        // Also get other GTK+ margins.
+        tsize.IncBy(GTKGetEntryMargins(entry).x, 0);
+    }
+
+    return tsize;
+}
+
 #endif // wxUSE_COMBOBOX