[gnumeric] Stf: use a GtkListStore, not lazy-list.

[Morten Welinder <mortenw src gnome org>]

commit b3fc03dac5f23dc0953bc56f19fb60e760582e88
Author: Morten Welinder <terra gnome org>
Date:   Fri May 18 13:24:57 2018 -0400

    Stf: use a GtkListStore, not lazy-list.

 src/dialogs/dialog-stf-preview.c |   94 ++++++++++++++++++++++++-------------
 1 files changed, 61 insertions(+), 33 deletions(-)
---
diff --git a/src/dialogs/dialog-stf-preview.c b/src/dialogs/dialog-stf-preview.c
index 0a85e4d..d27c4f4 100644
--- a/src/dialogs/dialog-stf-preview.c
+++ b/src/dialogs/dialog-stf-preview.c
@@ -29,28 +29,36 @@
 #include <number-match.h>
 #include <value.h>
 #include <style.h>
-#include <widgets/gnumeric-lazy-list.h>
 #include <string.h>
 
 
/******************************************************************************************************************
  * ADVANCED DRAWING FUNCTIONS
  
******************************************************************************************************************/
 
+enum { ITEM_LINENO };
+
 static void
-render_get_value (gint row, gint column, gpointer _rd, GValue *value)
+line_renderer_func (GtkTreeViewColumn *tvc,
+                   GtkCellRenderer   *cr,
+                   GtkTreeModel      *model,
+                   GtkTreeIter       *iter,
+                   gpointer           user_data)
 {
-       RenderData_t *rd = (RenderData_t *)_rd;
-       GnumericLazyList *ll = GNM_LAZY_LIST (gtk_tree_view_get_model (rd->tree_view));
-       GPtrArray *lines = rd->lines;
-       GPtrArray *line = (row < (int)lines->len)
-               ? g_ptr_array_index (lines, row)
+       RenderData_t *renderdata = user_data;
+       unsigned row, col;
+       GPtrArray *line;
+       const char *text;
+
+       gtk_tree_model_get (model, iter, ITEM_LINENO, &row, -1);
+       col = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (tvc), "col-no"));
+
+       line = (renderdata->lines && row < renderdata->lines->len)
+               ? g_ptr_array_index (renderdata->lines, row)
                : NULL;
-       const char *text = (line && column < (int)line->len)
-               ? g_ptr_array_index (line, column)
+       text = (line && col < line->len)
+               ? g_ptr_array_index (line, col)
                : NULL;
 
-       g_value_init (value, ll->column_headers[column]);
-
        if (text) {
                char *copy = NULL;
                char *tab = strchr (text, '\t');
@@ -76,12 +84,30 @@ render_get_value (gint row, gint column, gpointer _rd, GValue *value)
                        text = copy = cut;
                }
 
-               g_value_set_string (value, text);
+               g_object_set (cr, "text", text, NULL);
                g_free (copy);
+       } else
+               g_object_set (cr, "text", "", NULL);
+}
+
+static GtkTreeModel *
+make_model (GPtrArray *lines)
+{
+       GtkListStore *list_store = gtk_list_store_new (1, G_TYPE_UINT);
+       unsigned ui;
+       unsigned count = lines ? MIN (lines->len, STF_LINE_DISPLAY_LIMIT) : 0;
+
+       for (ui = 0; ui < count; ui++) {
+               GtkTreeIter iter;
+               gtk_list_store_append (list_store, &iter);
+               gtk_list_store_set (list_store, &iter, ITEM_LINENO, ui, -1);
        }
+
+       return GTK_TREE_MODEL (list_store);
 }
 
 
+
 
/******************************************************************************************************************
  * STRUCTURE MANIPULATION FUNCTIONS
  
******************************************************************************************************************/
@@ -97,7 +123,7 @@ stf_preview_new (GtkWidget *data_container,
                 GODateConventions const *date_conv)
 {
        RenderData_t* renderdata;
-       GnumericLazyList *ll;
+       GtkTreeModel *model;
 
        g_return_val_if_fail (data_container != NULL, NULL);
 
@@ -112,13 +138,13 @@ stf_preview_new (GtkWidget *data_container,
 
        renderdata->date_conv      = date_conv;
 
-       ll = gnumeric_lazy_list_new (render_get_value, renderdata, 0, 1, G_TYPE_STRING);
+       model = make_model (NULL);
        renderdata->tree_view =
-               GTK_TREE_VIEW (gtk_tree_view_new_with_model (GTK_TREE_MODEL (ll)));
+               GTK_TREE_VIEW (gtk_tree_view_new_with_model (model));
        gtk_tree_view_set_grid_lines (renderdata->tree_view,
                                      GTK_TREE_VIEW_GRID_LINES_VERTICAL);
        g_object_ref (renderdata->tree_view);
-       g_object_unref (ll);
+       g_object_unref (model);
 
        renderdata->colcount = 0;
 
@@ -181,7 +207,7 @@ stf_preview_set_lines (RenderData_t *renderdata,
 {
        unsigned int i;
        int colcount = 1;
-       GnumericLazyList *ll;
+       GtkTreeModel *model;
        gboolean hidden;
 
        g_return_if_fail (renderdata != NULL);
@@ -228,26 +254,28 @@ stf_preview_set_lines (RenderData_t *renderdata,
        while (renderdata->colcount < colcount) {
                char *text = g_strdup_printf (_(COLUMN_CAPTION),
                                              renderdata->colcount + 1);
-               GtkCellRenderer *cell = gtk_cell_renderer_text_new ();
-               GtkTreeViewColumn *column =
-                       gtk_tree_view_column_new_with_attributes
-                       (text, cell,
-                        "text", renderdata->colcount,
-                        NULL);
-               g_object_set (cell,
-                             "single_paragraph_mode", TRUE,
-                             NULL);
-               gtk_tree_view_append_column (renderdata->tree_view, column);
+               GtkCellRenderer *cr = gtk_cell_renderer_text_new ();
+               GtkTreeViewColumn *tvc = gtk_tree_view_column_new ();
+
+               g_object_set (cr, "single_paragraph_mode", TRUE, NULL);
+
+               gtk_tree_view_column_set_title (tvc, text);
+               gtk_tree_view_column_set_cell_data_func
+                       (tvc, cr,
+                        line_renderer_func,
+                        renderdata, NULL);
+               gtk_tree_view_column_pack_start (tvc, cr, TRUE);
+
+               g_object_set_data (G_OBJECT (tvc), "col-no",
+                                  GUINT_TO_POINTER (renderdata->colcount));
+               gtk_tree_view_append_column (renderdata->tree_view, tvc);
                g_free (text);
                renderdata->colcount++;
        }
 
-       ll = gnumeric_lazy_list_new (render_get_value, renderdata,
-                                    MIN (lines->len, STF_LINE_DISPLAY_LIMIT),
-                                    0);
-       gnumeric_lazy_list_add_column (ll, colcount, G_TYPE_STRING);
-       gtk_tree_view_set_model (renderdata->tree_view, GTK_TREE_MODEL (ll));
-       g_object_unref (ll);
+       model = make_model (lines);
+       gtk_tree_view_set_model (renderdata->tree_view, model);
+       g_object_unref (model);
 
        if (hidden)
                gtk_widget_show (GTK_WIDGET (renderdata->tree_view));