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wxWidgets/src/gtk/filepicker.cpp

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/////////////////////////////////////////////////////////////////////////////
// Name: src/gtk/filepicker.cpp
// Purpose: implementation of wxFileButton and wxDirButton
// Author: Francesco Montorsi
// Modified By:
// Created: 15/04/2006
// Id: $Id$
// Copyright: (c) Francesco Montorsi
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#if wxUSE_FILEPICKERCTRL && defined(__WXGTK26__)
#include "wx/filepicker.h"
#include "wx/tooltip.h"
#include <gtk/gtk.h>
// ============================================================================
// implementation
// ============================================================================
//-----------------------------------------------------------------------------
// wxFileButton
//-----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxFileButton, wxButton)
bool wxFileButton::Create( wxWindow *parent, wxWindowID id,
const wxString &label, const wxString &path,
const wxString &message, const wxString &wildcard,
const wxPoint &pos, const wxSize &size,
long style, const wxValidator& validator,
const wxString &name )
{
if (!gtk_check_version(2,6,0))
{
// VERY IMPORTANT: this code is identic to relative code in wxFileButton;
// if you find a problem here, fix it also in wxFileButton !
m_needParent = true;
if (!PreCreation( parent, pos, size ) ||
!wxControl::CreateBase(parent, id, pos, size, style & wxWINDOW_STYLE_MASK,
validator, name))
{
wxFAIL_MSG( wxT("wxFileButton creation failed") );
return false;
}
// create the dialog associated with this button
// NB: unlike generic implementation, native GTK implementation needs to create
// the filedialog here as it needs to use gtk_file_chooser_button_new_with_dialog()
SetWindowStyle(style);
m_path = path;
m_message = message;
m_wildcard = wildcard;
if ((m_dialog = CreateDialog()) == NULL)
return false;
// little trick used to avoid problems when there are other GTK windows 'grabbed':
// GtkFileChooserDialog won't be responsive to user events if there is another
// window which called gtk_grab_add (and this happens if e.g. a wxDialog is running
// in modal mode in the application - see wxDialogGTK::ShowModal).
// An idea could be to put the grab on the m_dialog->m_widget when the GtkFileChooserButton
// is clicked and then remove it as soon as the user closes the dialog itself.
// Unfortunately there's no way to hook in the 'clicked' event of the GtkFileChooserButton,
// thus we add grab on m_dialog->m_widget when it's shown and remove it when it's
// hidden simply using its "show" and "hide" events - clean & simple :)
g_signal_connect(m_dialog->m_widget, "show", G_CALLBACK(gtk_grab_add), NULL);
g_signal_connect(m_dialog->m_widget, "hide", G_CALLBACK(gtk_grab_remove), NULL);
// NOTE: we deliberately ignore the given label as GtkFileChooserButton
// use as label the currently selected file
m_widget = gtk_file_chooser_button_new_with_dialog( m_dialog->m_widget );
gtk_widget_show( GTK_WIDGET(m_widget) );
// we need to know when the dialog has been dismissed clicking OK...
// NOTE: the "clicked" signal is not available for a GtkFileChooserButton
// thus we are forced to use wxFileDialog's event
m_dialog->Connect(wxEVT_COMMAND_BUTTON_CLICKED,
wxCommandEventHandler(wxFileButton::OnDialogOK),
NULL, this);
m_parent->DoAddChild( this );
PostCreation(size);
SetBestSize(size);
}
else
return wxGenericFileButton::Create(parent, id, label, path, message, wildcard,
pos, size, style, validator, name);
return true;
}
wxFileButton::~wxFileButton()
{
// GtkFileChooserButton will automatically destroy the
// GtkFileChooserDialog associated with m_dialog.
// Thus we have to set its m_widget to NULL to avoid
// double destruction on same widget
m_dialog->m_widget = NULL;
}
void wxFileButton::OnDialogOK(wxCommandEvent& ev)
{
// the wxFileDialog associated with the GtkFileChooserButton has been closed
// using the OK button, thus the selected file has changed...
if (ev.GetId() == wxID_OK)
{
// ...update our path
UpdatePathFromDialog(m_dialog);
// ...and fire an event
wxFileDirPickerEvent event(wxEVT_COMMAND_FILEPICKER_CHANGED, this, GetId(), m_path);
GetEventHandler()->ProcessEvent(event);
}
}
void wxFileButton::SetPath(const wxString &str)
{
m_path = str;
UpdateDialogPath(m_dialog);
}
#endif // wxUSE_FILEPICKERCTRL && defined(__WXGTK26__)
#if wxUSE_DIRPICKERCTRL && defined(__WXGTK26__)
#include <unistd.h> // chdir
//-----------------------------------------------------------------------------
// "current-folder-changed"
//-----------------------------------------------------------------------------
extern "C" {
static void gtk_dirbutton_currentfolderchanged_callback(GtkFileChooserButton *widget,
wxDirButton *p)
{
// update the m_path member of the wxDirButtonGTK
// unless the path was changed by wxDirButton::SetPath()
if (p->m_bIgnoreNextChange)
{
p->m_bIgnoreNextChange=false;
return;
}
wxASSERT(p);
// NB: it's important to use gtk_file_chooser_get_filename instead of
// gtk_file_chooser_get_current_folder (see GTK docs) !
gchar* filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(widget));
p->UpdatePath(filename);
// since GtkFileChooserButton when used to pick directories also uses a combobox,
// maybe that the current folder has been changed but not through the GtkFileChooserDialog
// and thus the 'gtk_filedialog_ok_callback' could have not been called...
// thus we need to make sure the current working directory is updated if wxDIRP_CHANGE_DIR
// style was given.
if (p->HasFlag(wxDIRP_CHANGE_DIR))
chdir(filename);
g_free(filename);
// ...and fire an event
wxFileDirPickerEvent event(wxEVT_COMMAND_DIRPICKER_CHANGED, p, p->GetId(), p->GetPath());
p->GetEventHandler()->ProcessEvent(event);
}
}
//-----------------------------------------------------------------------------
// wxDirButtonGTK
//-----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxDirButton, wxButton)
bool wxDirButton::Create( wxWindow *parent, wxWindowID id,
const wxString &label, const wxString &path,
const wxString &message, const wxString &wildcard,
const wxPoint &pos, const wxSize &size,
long style, const wxValidator& validator,
const wxString &name )
{
if (!gtk_check_version(2,6,0))
{
// VERY IMPORTANT: this code is identic to relative code in wxFileButton;
// if you find a problem here, fix it also in wxFileButton !
m_needParent = true;
if (!PreCreation( parent, pos, size ) ||
!wxControl::CreateBase(parent, id, pos, size, style & wxWINDOW_STYLE_MASK,
validator, name))
{
wxFAIL_MSG( wxT("wxDirButtonGTK creation failed") );
return false;
}
// create the dialog associated with this button
SetWindowStyle(style);
m_message = message;
m_wildcard = wildcard;
if ((m_dialog = CreateDialog()) == NULL)
return false;
SetPath(path);
// little trick used to avoid problems when there are other GTK windows 'grabbed':
// GtkFileChooserDialog won't be responsive to user events if there is another
// window which called gtk_grab_add (and this happens if e.g. a wxDialog is running
// in modal mode in the application - see wxDialogGTK::ShowModal).
// An idea could be to put the grab on the m_dialog->m_widget when the GtkFileChooserButton
// is clicked and then remove it as soon as the user closes the dialog itself.
// Unfortunately there's no way to hook in the 'clicked' event of the GtkFileChooserButton,
// thus we add grab on m_dialog->m_widget when it's shown and remove it when it's
// hidden simply using its "show" and "hide" events - clean & simple :)
g_signal_connect(m_dialog->m_widget, "show", G_CALLBACK(gtk_grab_add), NULL);
g_signal_connect(m_dialog->m_widget, "hide", G_CALLBACK(gtk_grab_remove), NULL);
// NOTE: we deliberately ignore the given label as GtkFileChooserButton
// use as label the currently selected file
m_widget = gtk_file_chooser_button_new_with_dialog( m_dialog->m_widget );
gtk_widget_show( GTK_WIDGET(m_widget) );
// GtkFileChooserButton signals
g_signal_connect(m_widget, "current-folder-changed",
G_CALLBACK(gtk_dirbutton_currentfolderchanged_callback), this);
m_parent->DoAddChild( this );
PostCreation(size);
SetBestSize(size);
}
else
return wxGenericDirButton::Create(parent, id, label, path, message, wildcard,
pos, size, style, validator, name);
return true;
}
wxDirButton::~wxDirButton()
{
// GtkFileChooserButton will automatically destroy the
// GtkFileChooserDialog associated with m_dialog.
// Thus we have to set its m_widget to NULL to avoid
// double destruction on same widget
m_dialog->m_widget = NULL;
}
void wxDirButton::SetPath(const wxString &str)
{
m_path = str;
// wxDirButton uses the "current-folder-changed" signal which is triggered also
// when we set the path on the dialog associated with this button; thus we need
// to set the following flag to avoid sending a wxFileDirPickerEvent from this
// function (which would be inconsistent with wxFileButton's behaviour and in
// general with all wxWidgets control-manipulation functions which do not send events).
m_bIgnoreNextChange = true;
UpdateDialogPath(m_dialog);
}
#endif // wxUSE_DIRPICKERCTRL && defined(__WXGTK26__)