Syntax Window: Edit->* item sensitivity follows selection
[pspp] / src / ui / gui / psppire-syntax-window.c
index 48a77fc03ec21a7fa3f9cfc4a3ddc6cceedb3c4f..ec4da6e604f4d70eacb4037722c52ef849a32b7d 100644 (file)
@@ -1,5 +1,5 @@
 /* PSPPIRE - a graphical user interface for PSPP.
-   Copyright (C) 2008, 2009  Free Software Foundation
+   Copyright (C) 2008, 2009, 2010  Free Software Foundation
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -30,7 +30,7 @@
 #include "psppire-data-window.h"
 #include "psppire-window-register.h"
 #include "psppire.h"
-#include "about.h"
+#include "help-menu.h"
 #include "psppire-syntax-window.h"
 #include "syntax-editor-source.h"
 #include <language/lexer/lexer.h>
@@ -133,6 +133,119 @@ editor_execute_syntax (const PsppireSyntaxWindow *sw, GtkTextIter start,
 }
 
 
+\f
+
+/* Delete the currently selected text */
+static void
+on_edit_delete (PsppireSyntaxWindow *sw)
+{
+  GtkTextIter begin, end;
+  
+  if ( gtk_text_buffer_get_selection_bounds (sw->buffer, &begin, &end) )
+    gtk_text_buffer_delete (sw->buffer, &begin, &end);
+}
+
+/* The syntax editor's clipboard deals only with text */
+enum {
+  SELECT_FMT_NULL,
+  SELECT_FMT_TEXT,
+};
+
+
+static void
+selection_changed (PsppireSyntaxWindow *sw)
+{
+  gboolean sel = gtk_text_buffer_get_has_selection (sw->buffer);
+
+  gtk_action_set_sensitive (sw->edit_copy, sel);
+  gtk_action_set_sensitive (sw->edit_cut, sel);
+  gtk_action_set_sensitive (sw->edit_delete, sel);
+}
+
+/* The callback which runs when something request clipboard data */
+static void
+clipboard_get_cb (GtkClipboard     *clipboard,
+                 GtkSelectionData *selection_data,
+                 guint             info,
+                 gpointer          data)
+{
+  PsppireSyntaxWindow *sw = data;
+  g_assert (info == SELECT_FMT_TEXT);
+
+  gtk_selection_data_set (selection_data, selection_data->target,
+                         8,
+                         (const guchar *) sw->cliptext, strlen (sw->cliptext));
+
+}
+
+static void
+clipboard_clear_cb (GtkClipboard *clipboard,
+                   gpointer data)
+{
+  PsppireSyntaxWindow *sw = data;
+  g_free (sw->cliptext);
+  sw->cliptext = NULL;
+}
+
+
+static const GtkTargetEntry targets[] = {
+  { "UTF8_STRING",   0, SELECT_FMT_TEXT },
+  { "STRING",        0, SELECT_FMT_TEXT },
+  { "TEXT",          0, SELECT_FMT_TEXT },
+  { "COMPOUND_TEXT", 0, SELECT_FMT_TEXT },
+  { "text/plain;charset=utf-8", 0, SELECT_FMT_TEXT },
+  { "text/plain",    0, SELECT_FMT_TEXT },
+};
+
+
+/*
+  Store a clip containing the currently selected text.
+  Returns true iff something was set.
+  As a side effect, begin and end will be set to indicate
+  the limits of the selected text.
+*/
+static gboolean
+set_clip (PsppireSyntaxWindow *sw, GtkTextIter *begin, GtkTextIter *end)
+{
+  GtkClipboard *clipboard ;
+
+  if ( ! gtk_text_buffer_get_selection_bounds (sw->buffer, begin, end) )
+    return FALSE;
+
+  g_free (sw->cliptext);
+  sw->cliptext = gtk_text_buffer_get_text  (sw->buffer, begin, end, FALSE);
+
+  clipboard =
+    gtk_widget_get_clipboard (GTK_WIDGET (sw), GDK_SELECTION_CLIPBOARD);
+
+  if (!gtk_clipboard_set_with_owner (clipboard, targets,
+                                    G_N_ELEMENTS (targets),
+                                    clipboard_get_cb, clipboard_clear_cb,
+                                    G_OBJECT (sw)))
+    clipboard_clear_cb (clipboard, sw);
+
+  return TRUE;
+}
+
+static void
+on_edit_cut (PsppireSyntaxWindow *sw)
+{
+  GtkTextIter begin, end;
+  
+  if ( set_clip (sw, &begin, &end))
+    gtk_text_buffer_delete (sw->buffer, &begin, &end);
+}
+
+static void
+on_edit_copy (PsppireSyntaxWindow *sw)
+{
+  GtkTextIter begin, end;
+
+  set_clip (sw, &begin, &end);
+}
+
+\f
+
 /* Parse and execute all the text in the buffer */
 static void
 on_run_all (GtkMenuItem *menuitem, gpointer user_data)
@@ -311,7 +424,7 @@ syntax_save_as (PsppireWindow *se)
 
       if ( ! save_editor_to_file (PSPPIRE_SYNTAX_WINDOW (se), filename, &err) )
        {
-         msg ( ME, err->message );
+         msg ( ME, "%s", err->message );
          g_error_free (err);
        }
 
@@ -336,7 +449,7 @@ syntax_save (PsppireWindow *se)
       save_editor_to_file (PSPPIRE_SYNTAX_WINDOW (se), filename, &err);
       if ( err )
        {
-         msg (ME, err->message);
+         msg (ME, "%s", err->message);
          g_error_free (err);
        }
     }
@@ -360,51 +473,17 @@ create_syntax_window (void)
   gtk_widget_show (w);
 }
 
-/* Callback for the File->Open->Syntax menuitem */
 void
-open_syntax_window (GtkMenuItem *menuitem, gpointer parent)
+open_syntax_window (const char *file_name)
 {
-  GtkFileFilter *filter;
-  gint response;
+  GtkWidget *se = psppire_syntax_window_new ();
 
-  GtkWidget *dialog =
-    gtk_file_chooser_dialog_new (_("Open Syntax"),
-                                GTK_WINDOW (parent),
-                                GTK_FILE_CHOOSER_ACTION_OPEN,
-                                GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
-                                GTK_STOCK_OPEN,   GTK_RESPONSE_ACCEPT,
-                                NULL);
-
-  filter = gtk_file_filter_new ();
-  gtk_file_filter_set_name (filter, _("Syntax Files (*.sps) "));
-  gtk_file_filter_add_pattern (filter, "*.sps");
-  gtk_file_filter_add_pattern (filter, "*.SPS");
-  gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
-
-  filter = gtk_file_filter_new ();
-  gtk_file_filter_set_name (filter, _("All Files"));
-  gtk_file_filter_add_pattern (filter, "*");
-  gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog), filter);
-
-  response = gtk_dialog_run (GTK_DIALOG (dialog));
-
-  if (response == GTK_RESPONSE_ACCEPT)
-    {
-      const char *file_name = gtk_file_chooser_get_filename
-       (GTK_FILE_CHOOSER (dialog));
-
-      GtkWidget *se = psppire_syntax_window_new ();
-
-      if ( psppire_window_load (PSPPIRE_WINDOW (se), file_name) ) 
-       gtk_widget_show (se);
-      else
-       gtk_widget_destroy (se);
-    }
-
-  gtk_widget_destroy (dialog);
+  if ( psppire_window_load (PSPPIRE_WINDOW (se), file_name) )
+    gtk_widget_show (se);
+  else
+    gtk_widget_destroy (se);
 }
 
-
 static void
 on_text_changed (GtkTextBuffer *buffer, PsppireSyntaxWindow *window)
 {
@@ -426,11 +505,24 @@ psppire_syntax_window_init (PsppireSyntaxWindow *window)
   GtkBuilder *xml = builder_new ("syntax-editor.ui");
   GtkWidget *box = gtk_vbox_new (FALSE, 0);
 
-  GtkWidget *menubar = get_widget_assert (xml, "menubar2");
+  GtkWidget *menubar = get_widget_assert (xml, "menubar");
   GtkWidget *sw = get_widget_assert (xml, "scrolledwindow8");
 
 
   GtkWidget *text_view = get_widget_assert (xml, "syntax_text_view");
+
+
+  GtkClipboard *clipboard =
+    gtk_widget_get_clipboard (GTK_WIDGET (window), GDK_SELECTION_PRIMARY);
+
+  g_signal_connect_swapped (clipboard, "owner-change", G_CALLBACK (selection_changed), window);
+
+  window->cliptext = NULL;
+
+  window->edit_delete = get_action_assert (xml, "edit_delete");
+  window->edit_copy = get_action_assert (xml, "edit_copy");
+  window->edit_cut = get_action_assert (xml, "edit_cut");
+
   window->buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text_view));
   window->lexer = lex_create (the_source_stream);
 
@@ -459,15 +551,7 @@ psppire_syntax_window_init (PsppireSyntaxWindow *window)
 
   gtk_widget_show_all (box);
 
-  g_signal_connect (get_action_assert (xml,"file_new_syntax"),
-                   "activate",
-                   G_CALLBACK (create_syntax_window),
-                   NULL);
-
-  g_signal_connect (get_action_assert (xml,"file_open_syntax"),
-                   "activate",
-                   G_CALLBACK (open_syntax_window),
-                   window);
+  g_signal_connect_swapped (get_action_assert (xml,"file_new_syntax"), "activate", G_CALLBACK (create_syntax_window), NULL);
 
 #if 0
   g_signal_connect (get_action_assert (xml,"file_new_data"),
@@ -476,21 +560,6 @@ psppire_syntax_window_init (PsppireSyntaxWindow *window)
                    window);
 #endif
 
-  {
-    GtkAction *abt = get_action_assert (xml, "help_about");
-    g_object_set (abt, "stock-id", "gtk-about", NULL);
-
-    g_signal_connect (abt,
-                     "activate",
-                     G_CALLBACK (about_new),
-                     window);
-  }
-
-  g_signal_connect (get_action_assert (xml,"help_reference"),
-                   "activate",
-                   G_CALLBACK (reference_manual),
-                   NULL);
-
   g_signal_connect_swapped (get_action_assert (xml, "file_save"),
                    "activate",
                    G_CALLBACK (syntax_save),
@@ -506,12 +575,26 @@ psppire_syntax_window_init (PsppireSyntaxWindow *window)
                    G_CALLBACK (on_quit),
                    window);
 
+  g_signal_connect_swapped (window->edit_delete,
+                   "activate",
+                   G_CALLBACK (on_edit_delete),
+                   window);
+
+  g_signal_connect_swapped (window->edit_copy,
+                   "activate",
+                   G_CALLBACK (on_edit_copy),
+                   window);
+
+  g_signal_connect_swapped (window->edit_cut,
+                   "activate",
+                   G_CALLBACK (on_edit_cut),
+                   window);
+
   g_signal_connect (get_action_assert (xml,"run_all"),
                    "activate",
                    G_CALLBACK (on_run_all),
                    window);
 
-
   g_signal_connect (get_action_assert (xml,"run_selection"),
                    "activate",
                    G_CALLBACK (on_run_selection),
@@ -535,14 +618,19 @@ psppire_syntax_window_init (PsppireSyntaxWindow *window)
   {
   GtkUIManager *uim = GTK_UI_MANAGER (get_object_assert (xml, "uimanager1", GTK_TYPE_UI_MANAGER));
 
+  merge_help_menu (uim);
+
   PSPPIRE_WINDOW (window)->menu =
-    GTK_MENU_SHELL (gtk_ui_manager_get_widget (uim,"/ui/menubar2/windows/windows_minimise_all")->parent);
+    GTK_MENU_SHELL (gtk_ui_manager_get_widget (uim,"/ui/menubar/windows/windows_minimise_all")->parent);
   }
 
   g_object_unref (xml);
 }
 
 
+
+
+
 GtkWidget*
 psppire_syntax_window_new (void)
 {
@@ -570,7 +658,7 @@ error_dialog (GtkWindow *w, const gchar *filename,  GError *err)
   g_object_set (dialog, "icon-name", "psppicon", NULL);
 
   gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
-                                           err->message);
+                                           "%s", err->message);
 
   gtk_dialog_run (GTK_DIALOG (dialog));
 
@@ -580,16 +668,30 @@ error_dialog (GtkWindow *w, const gchar *filename,  GError *err)
 /*
   Loads the buffer from the file called FILENAME
 */
-static gboolean
+gboolean
 syntax_load (PsppireWindow *window, const gchar *filename)
 {
   GError *err = NULL;
-  gchar *text;
+  gchar *text_locale = NULL;
+  gchar *text_utf8 = NULL;
+  gsize len_locale = -1;
+  gsize len_utf8 = -1;
   GtkTextIter iter;
   PsppireSyntaxWindow *sw = PSPPIRE_SYNTAX_WINDOW (window);
 
   /* FIXME: What if it's a very big file ? */
-  if ( ! g_file_get_contents (filename, &text, NULL, &err) )
+  if ( ! g_file_get_contents (filename, &text_locale, &len_locale, &err) )
+    {
+      error_dialog (GTK_WINDOW (window), filename, err);
+      g_clear_error (&err);
+      return FALSE;
+    }
+
+  text_utf8 = g_locale_to_utf8 (text_locale, len_locale, NULL, &len_utf8, &err);
+
+  free (text_locale);
+
+  if ( text_utf8 == NULL )
     {
       error_dialog (GTK_WINDOW (window), filename, err);
       g_clear_error (&err);
@@ -598,10 +700,12 @@ syntax_load (PsppireWindow *window, const gchar *filename)
 
   gtk_text_buffer_get_iter_at_line (sw->buffer, &iter, 0);
 
-  gtk_text_buffer_insert (sw->buffer, &iter, text, -1);
+  gtk_text_buffer_insert (sw->buffer, &iter, text_utf8, len_utf8);
 
   gtk_text_buffer_set_modified (sw->buffer, FALSE);
 
+  free (text_utf8);
+
   return TRUE;
 }
 
@@ -613,3 +717,6 @@ psppire_syntax_window_iface_init (PsppireWindowIface *iface)
   iface->save = syntax_save;
   iface->load = syntax_load;
 }
+
+
+