/* PSPPIRE - a graphical user interface for PSPP.
 Copyright (C) 2008, 2009, 2010, 2011, 2012, 2016,
 2017, 2019 Free Software Foundation, Inc.
 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
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 GNU General Public License for more details.
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include "ui/gui/psppire-data-editor.h"
#include <gtk/gtk.h>
#include "data/datasheet.h"
#include "data/value-labels.h"
#include "libpspp/range-set.h"
#include "libpspp/str.h"
#include "ui/gui/helper.h"
#include "ui/gui/var-display.h"
#include "ui/gui/val-labs-dialog.h"
#include "ui/gui/missing-val-dialog.h"
#include "ui/gui/var-type-dialog.h"
#include "ui/gui/value-variant.h"
#include "ui/gui/psppire-dict.h"
#include "ui/gui/psppire-data-store.h"
#include "ui/gui/psppire-data-window.h"
#include "ui/gui/psppire-value-entry.h"
#include "ui/gui/psppire-conf.h"
#include "ui/gui/psppire-variable-sheet.h"
#include "ui/gui/psppire-data-sheet.h"
#include <ssw-sheet.h>
#include <gettext.h>
#define _(msgid) gettext (msgid)
static void refresh_entry (PsppireDataEditor *);
G_DEFINE_TYPE (PsppireDataEditor, psppire_data_editor, GTK_TYPE_NOTEBOOK)
static GObjectClass * parent_class = NULL;
static void
psppire_data_editor_finalize (GObject *obj)
{
 PsppireDataEditor *de = PSPPIRE_DATA_EDITOR (obj);
 if (de->font)
 pango_font_description_free (de->font);
 /* Chain up to the parent class */
 G_OBJECT_CLASS (parent_class)->finalize (obj);
}
static void
psppire_data_editor_dispose (GObject *obj)
{
 PsppireDataEditor *de = PSPPIRE_DATA_EDITOR (obj);
 if (de->dispose_has_run)
 return;
 de->dispose_has_run = TRUE;
 g_object_unref (de->data_store);
 g_object_unref (de->dict);
 /* Chain up to the parent class */
 G_OBJECT_CLASS (parent_class)->dispose (obj);
}
enum
 {
 PROP_0,
 PROP_DATA_STORE,
 PROP_DICTIONARY,
 PROP_VALUE_LABELS,
 PROP_SPLIT_WINDOW
 };
static void
psppire_data_editor_refresh_model (PsppireDataEditor *de)
{
}
static void
psppire_data_editor_set_property (GObject *object,
 guint prop_id,
 const GValue *value,
 GParamSpec *pspec)
{
 PsppireDataEditor *de = PSPPIRE_DATA_EDITOR (object);
 switch (prop_id)
 {
 case PROP_SPLIT_WINDOW:
 de->split = g_value_get_boolean (value);
 g_object_set (de->data_sheet, "split", de->split, NULL);
 g_object_set (de->var_sheet, "split", de->split, NULL);
 break;
 case PROP_DATA_STORE:
 if (de->data_store)
 {
 g_signal_handlers_disconnect_by_func (de->data_store,
 G_CALLBACK (refresh_entry),
 de);
 g_object_unref (de->data_store);
 }
 de->data_store = g_value_get_pointer (value);
 g_object_ref (de->data_store);
 g_object_set (de->data_sheet, "data-model", de->data_store, NULL);
 psppire_data_editor_refresh_model (de);
 g_signal_connect_swapped (de->data_sheet, "selection-changed",
 G_CALLBACK (refresh_entry),
 de);
 g_signal_connect_swapped (de->data_store, "case-changed",
 G_CALLBACK (refresh_entry), de);
 break;
 case PROP_DICTIONARY:
 if (de->dict)
 g_object_unref (de->dict);
 de->dict = g_value_get_pointer (value);
 g_object_ref (de->dict);
 g_object_set (de->var_sheet, "data-model", de->dict, NULL);
 break;
 case PROP_VALUE_LABELS:
 {
 gboolean l = g_value_get_boolean (value);
 de->use_value_labels = l;
 g_object_set (de->data_sheet, "forward-conversion",
 l ?
 psppire_data_store_value_to_string_with_labels :
 psppire_data_store_value_to_string,
 NULL);
 }
 break;
 default:
 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 break;
 };
}
static void
psppire_data_editor_get_property (GObject *object,
 guint prop_id,
 GValue *value,
 GParamSpec *pspec)
{
 PsppireDataEditor *de = PSPPIRE_DATA_EDITOR (object);
 switch (prop_id)
 {
 case PROP_SPLIT_WINDOW:
 g_value_set_boolean (value, de->split);
 break;
 case PROP_DATA_STORE:
 g_value_set_pointer (value, de->data_store);
 break;
 case PROP_DICTIONARY:
 g_value_set_pointer (value, de->dict);
 break;
 case PROP_VALUE_LABELS:
 g_value_set_boolean (value, de->use_value_labels);
 break;
 default:
 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 break;
 }
}
static void
psppire_data_editor_switch_page (GtkNotebook *notebook,
 GtkWidget *w,
 guint page_num)
{
 GTK_NOTEBOOK_CLASS (parent_class)->switch_page (notebook, w, page_num);
}
static void
psppire_data_editor_set_focus_child (GtkContainer *container,
 GtkWidget *widget)
{
 GTK_CONTAINER_CLASS (parent_class)->set_focus_child (container, widget);
}
static gboolean
on_key_press (GtkWidget *w, GdkEventKey *e)
{
 PsppireDataEditor *de = PSPPIRE_DATA_EDITOR (w);
 if (e->keyval == GDK_KEY_F2 &&
 PSPPIRE_DATA_EDITOR_DATA_VIEW == gtk_notebook_get_current_page (GTK_NOTEBOOK (de)))
 {
 gtk_widget_grab_focus (de->datum_entry);
 }
 return FALSE;
}
static void
psppire_data_editor_class_init (PsppireDataEditorClass *klass)
{
 GParamSpec *data_store_spec ;
 GParamSpec *dict_spec ;
 GParamSpec *value_labels_spec;
 GParamSpec *split_window_spec;
 GObjectClass *object_class = G_OBJECT_CLASS (klass);
 GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass);
 GtkNotebookClass *notebook_class = GTK_NOTEBOOK_CLASS (klass);
 GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
 parent_class = g_type_class_peek_parent (klass);
 object_class->dispose = psppire_data_editor_dispose;
 object_class->finalize = psppire_data_editor_finalize;
 object_class->set_property = psppire_data_editor_set_property;
 object_class->get_property = psppire_data_editor_get_property;
 container_class->set_focus_child = psppire_data_editor_set_focus_child;
 notebook_class->switch_page = psppire_data_editor_switch_page;
 widget_class->key_press_event = on_key_press;
 data_store_spec =
 g_param_spec_pointer ("data-store",
 "Data Store",
 "A pointer to the data store associated with this editor",
 G_PARAM_CONSTRUCT_ONLY &#124; G_PARAM_WRITABLE &#124; G_PARAM_READABLE);
 g_object_class_install_property (object_class,
 PROP_DATA_STORE,
 data_store_spec);
 dict_spec =
 g_param_spec_pointer ("dictionary",
 "Dictionary",
 "A pointer to the dictionary associated with this editor",
 G_PARAM_CONSTRUCT_ONLY &#124; G_PARAM_WRITABLE &#124; G_PARAM_READABLE);
 g_object_class_install_property (object_class,
 PROP_DICTIONARY,
 dict_spec);
 value_labels_spec =
 g_param_spec_boolean ("value-labels",
 "Value Labels",
 "Whether or not the data sheet should display labels instead of values",
 FALSE,
 G_PARAM_WRITABLE &#124; G_PARAM_READABLE);
 g_object_class_install_property (object_class,
 PROP_VALUE_LABELS,
 value_labels_spec);
 split_window_spec =
 g_param_spec_boolean ("split",
 "Split Window",
 "True iff the data sheet is split",
 FALSE,
 G_PARAM_READABLE &#124; G_PARAM_WRITABLE);
 g_object_class_install_property (object_class,
 PROP_SPLIT_WINDOW,
 split_window_spec);
}
static void
on_var_sheet_var_double_clicked (void *var_sheet, gint dict_index,
 PsppireDataEditor *de)
{
 gtk_notebook_set_current_page (GTK_NOTEBOOK (de),
 PSPPIRE_DATA_EDITOR_DATA_VIEW);
 ssw_sheet_scroll_to (SSW_SHEET (de->data_sheet), dict_index, -1);
}
static void
on_data_sheet_var_double_clicked (SswSheet *data_sheet, gint dict_index,
 PsppireDataEditor *de)
{
 gtk_notebook_set_current_page (GTK_NOTEBOOK (de),
 PSPPIRE_DATA_EDITOR_VARIABLE_VIEW);
 ssw_sheet_scroll_to (SSW_SHEET (de->var_sheet), -1, dict_index);
}
/* Refreshes 'de->cell_ref_label' and 'de->datum_entry' from the currently
 active cell or cells. */
static void
refresh_entry (PsppireDataEditor *de)
{
 gint row, col;
 if (ssw_sheet_get_active_cell (SSW_SHEET (de->data_sheet), &col, &row))
 {
 union value val;
 const struct variable *var = psppire_dict_get_variable (de->dict, col);
 if (var == NULL)
 return;
 psppire_value_entry_set_variable (PSPPIRE_VALUE_ENTRY (de->datum_entry), var);
 int width = var_get_width (var);
 if (! psppire_data_store_get_value (PSPPIRE_DATA_STORE (de->data_store),
 row, var, &val))
 return;
 psppire_value_entry_set_value (PSPPIRE_VALUE_ENTRY (de->datum_entry),
 &val, width);
 value_destroy (&val, width);
 }
}
static void
on_datum_entry_activate (GtkEntry *entry, PsppireDataEditor *de)
{
 gint row, col;
 if (ssw_sheet_get_active_cell (SSW_SHEET (de->data_sheet), &col, &row))
 {
 union value val;
 const struct variable *var = psppire_dict_get_variable (de->dict, col);
 if (var == NULL)
 return;
 int width = var_get_width (var);
 value_init (&val, width);
 if (psppire_value_entry_get_value (PSPPIRE_VALUE_ENTRY (de->datum_entry),
 &val, width))
 {
 psppire_data_store_set_value (de->data_store, row, var, &val);
 }
 value_destroy (&val, width);
 gtk_widget_grab_focus (de->data_sheet);
 ssw_sheet_set_active_cell (SSW_SHEET (de->data_sheet), col, row, NULL);
 }
}
/* Called when the active cell or the selection in the data sheet changes */
static void
on_data_selection_change (PsppireDataEditor *de, SswRange *sel)
{
 gchar *ref_cell_text = NULL;
 gint n_cases = abs (sel->end_y - sel->start_y) + 1;
 gint n_vars = abs (sel->end_x - sel->start_x) + 1;
 if (n_cases == 1 && n_vars == 1)
 {
 /* A single cell is selected */
 const struct variable *var = psppire_dict_get_variable (de->dict, sel->start_x);
 if (var)
 ref_cell_text = g_strdup_printf (_("%d : %s"),
 sel->start_y + 1, var_get_name (var));
 }
 else
 {
 struct string s;
 /* The glib string library does not understand the ' printf modifier
 on all platforms, but the "struct string" library does (because
 Gnulib fixes that problem), so use the latter. */
 ds_init_empty (&s);
 ds_put_format (&s, ngettext ("%'d case", "%'d cases", n_cases),
 n_cases);
 ds_put_byte (&s, ' ');
 ds_put_unichar (&s, 0xd7); /* U+00D7 MULTIPLICATION SIGN */
 ds_put_byte (&s, ' ');
 ds_put_format (&s, ngettext ("%'d variable", "%'d variables",
 n_vars),
 n_vars);
 ref_cell_text = ds_steal_cstr (&s);
 }
 gtk_label_set_label (GTK_LABEL (de->cell_ref_label),
 ref_cell_text ? ref_cell_text : "");
 g_free (ref_cell_text);
}
static void set_font_recursively (GtkWidget *w, gpointer data);

void
psppire_data_editor_data_delete_variables (PsppireDataEditor *de)
{
 psppire_data_sheet_delete_variables (PSPPIRE_DATA_SHEET (de->data_sheet));
}
void
psppire_data_editor_var_delete_variables (PsppireDataEditor *de)
{
 SswRange *range = SSW_SHEET(de->var_sheet)->selection;
 if (range->start_y> range->end_y)
 {
 gint temp = range->start_y;
 range->start_y = range->end_y;
 range->end_y = temp;
 }
 psppire_dict_delete_variables (de->dict, range->start_y,
 (range->end_y - range->start_y + 1));
 gtk_widget_queue_draw (GTK_WIDGET (de->var_sheet));
}
void
psppire_data_editor_insert_new_case_at_posn (PsppireDataEditor *de, gint posn)
{
 g_return_if_fail (posn>= 0);
 psppire_data_store_insert_new_case (de->data_store, posn);
 gtk_widget_queue_draw (GTK_WIDGET (de->data_sheet));
}
void
psppire_data_editor_insert_new_variable_at_posn (PsppireDataEditor *de, gint posn)
{
 psppire_data_sheet_insert_new_variable_at_posn (PSPPIRE_DATA_SHEET (de->data_sheet), posn);
}
static void
psppire_data_editor_init (PsppireDataEditor *de)
{
 GtkWidget *hbox;
 gchar *fontname = NULL;
 GtkStyleContext *context = gtk_widget_get_style_context (GTK_WIDGET (de));
 gtk_style_context_add_class (context, "psppire-data-editor");
 de->dispose_has_run = FALSE;
 de->font = NULL;
 g_object_set (de, "tab-pos", GTK_POS_BOTTOM, NULL);
 de->cell_ref_label = gtk_label_new ("");
 gtk_label_set_width_chars (GTK_LABEL (de->cell_ref_label), 25);
 gtk_widget_set_valign (de->cell_ref_label, GTK_ALIGN_CENTER);
 de->datum_entry = psppire_value_entry_new ();
 g_signal_connect (de->datum_entry, "edit-done",
 G_CALLBACK (on_datum_entry_activate), de);
 hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);
 gtk_box_pack_start (GTK_BOX (hbox), de->cell_ref_label, FALSE, FALSE, 0);
 gtk_box_pack_start (GTK_BOX (hbox), de->datum_entry, TRUE, TRUE, 0);
 de->split = FALSE;
 de->use_value_labels = FALSE;
 de->data_sheet = psppire_data_sheet_new ();
 GtkWidget *data_button = ssw_sheet_get_button (SSW_SHEET (de->data_sheet));
 gtk_button_set_label (GTK_BUTTON (data_button), _("Case"));
 de->vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
 gtk_box_pack_start (GTK_BOX (de->vbox), hbox, FALSE, FALSE, 0);
 gtk_box_pack_start (GTK_BOX (de->vbox), de->data_sheet, TRUE, TRUE, 0);
 g_signal_connect_swapped (de->data_sheet, "selection-changed",
 G_CALLBACK (on_data_selection_change), de);
 gtk_notebook_append_page (GTK_NOTEBOOK (de), de->vbox,
 gtk_label_new_with_mnemonic (_("Data View")));
 gtk_widget_show_all (de->vbox);
 de->var_sheet = psppire_variable_sheet_new ();
 GtkWidget *var_button = ssw_sheet_get_button (SSW_SHEET (de->var_sheet));
 gtk_button_set_label (GTK_BUTTON (var_button), _("Variable"));
 gtk_notebook_append_page (GTK_NOTEBOOK (de), de->var_sheet,
 gtk_label_new_with_mnemonic (_("Variable View")));
 gtk_widget_show_all (de->var_sheet);
 g_signal_connect (de->var_sheet, "row-header-double-clicked",
 G_CALLBACK (on_var_sheet_var_double_clicked), de);
 g_signal_connect (de->data_sheet, "column-header-double-clicked",
 G_CALLBACK (on_data_sheet_var_double_clicked), de);
 g_object_set (de, "can-focus", FALSE, NULL);
 if (psppire_conf_get_string ("Data Editor", "font", &fontname))
 {
 de->font = pango_font_description_from_string (fontname);
 g_free (fontname);
 set_font_recursively (GTK_WIDGET (de), de->font);
 }
 gtk_widget_add_events (GTK_WIDGET (de), GDK_KEY_PRESS_MASK);
}
GtkWidget*
psppire_data_editor_new (PsppireDict *dict,
 PsppireDataStore *data_store)
{
 return g_object_new (PSPPIRE_DATA_EDITOR_TYPE,
 "dictionary", dict,
 "data-store", data_store,
 NULL);
}

/* Turns the visible grid on or off, according to GRID_VISIBLE, for DE's data
 sheet(s) and variable sheet. */
void
psppire_data_editor_show_grid (PsppireDataEditor *de, gboolean grid_visible)
{
 g_object_set (SSW_SHEET (de->var_sheet), "gridlines", grid_visible, NULL);
 g_object_set (SSW_SHEET (de->data_sheet), "gridlines", grid_visible, NULL);
}
static void
set_font_recursively (GtkWidget *w, gpointer data)
{
 PangoFontDescription *font_desc = data;
 GtkStyleContext *style = gtk_widget_get_style_context (w);
 GtkCssProvider *cssp = gtk_css_provider_new ();
 /* The Pango font description as string has a different syntax than the
 css style description:
 Pango: Courier Italic 12
 CSS: italic 12pt Courier
 I ignore Weight, Style and Variant and just take family and size */
 const gchar *str = pango_font_description_get_family (font_desc);
 gint size = pango_font_description_get_size (font_desc);
 gchar *css =
 g_strdup_printf ("* {font: %dpt %s}", size/PANGO_SCALE, str);
 GError *err = NULL;
 gtk_css_provider_load_from_data (cssp, css, -1, &err);
 if (err)
 {
 g_warning ("Failed to load font css \"%s\": %s", css, err->message);
 g_error_free (err);
 }
 g_free (css);
 gtk_style_context_add_provider (style,
 GTK_STYLE_PROVIDER (cssp),
 GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
 g_object_unref (cssp);
 if (GTK_IS_CONTAINER (w))
 gtk_container_foreach (GTK_CONTAINER (w), set_font_recursively, font_desc);
}
/* Sets FONT_DESC as the font used by the data sheet(s) and variable sheet. */
void
psppire_data_editor_set_font (PsppireDataEditor *de, PangoFontDescription *font_desc)
{
 gchar *font_name;
 set_font_recursively (GTK_WIDGET (de), font_desc);
 if (de->font)
 pango_font_description_free (de->font);
 de->font = pango_font_description_copy (font_desc);
 font_name = pango_font_description_to_string (de->font);
 psppire_conf_set_string ("Data Editor", "font", font_name);
 psppire_conf_save ();
 g_free (font_name);
}
/* If SPLIT is TRUE, splits DE's data sheet into four panes.
 If SPLIT is FALSE, un-splits it into a single pane. */
void
psppire_data_editor_split_window (PsppireDataEditor *de, gboolean split)
{
 g_object_set (de, "split", split, NULL);
}
/* Makes the variable with dictionary index DICT_INDEX in DE's dictionary
 visible and selected in the active view in DE. */
void
psppire_data_editor_goto_variable (PsppireDataEditor *de, gint dict_index)
{
 gint page = gtk_notebook_get_current_page (GTK_NOTEBOOK (de));
 switch (page)
 {
 case PSPPIRE_DATA_EDITOR_DATA_VIEW:
 ssw_sheet_scroll_to (SSW_SHEET (de->data_sheet), dict_index, -1);
 ssw_sheet_set_active_cell (SSW_SHEET (de->data_sheet), dict_index, -1, NULL);
 break;
 case PSPPIRE_DATA_EDITOR_VARIABLE_VIEW:
 ssw_sheet_scroll_to (SSW_SHEET (de->var_sheet), -1, dict_index);
 ssw_sheet_set_active_cell (SSW_SHEET (de->var_sheet), -1, dict_index, NULL);
 break;
 }
}
/* Set the datum at COL, ROW, to that contained in VALUE.
 */
static void
store_set_datum (GtkTreeModel *model, gint col, gint row,
 const GValue *value)
{
 PsppireDataStore *store = PSPPIRE_DATA_STORE (model);
 GVariant *v = g_value_get_variant (value);
 union value uv;
 value_variant_get (&uv, v);
 const struct variable *var = psppire_dict_get_variable (store->dict, col);
 psppire_data_store_set_value (store, row, var, &uv);
 value_destroy_from_variant (&uv, v);
}
void
psppire_data_editor_paste (PsppireDataEditor *de)
{
 SswSheet *sheet = SSW_SHEET (de->data_sheet);
 GtkClipboard *clip =
 gtk_clipboard_get_for_display (gtk_widget_get_display (GTK_WIDGET (sheet)),
 GDK_SELECTION_CLIPBOARD);
 ssw_sheet_paste (sheet, clip, store_set_datum);
}
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