diff options
Diffstat (limited to 'widgets/table/e-table-sorted-variable.c')
| -rw-r--r-- | widgets/table/e-table-sorted-variable.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/widgets/table/e-table-sorted-variable.c b/widgets/table/e-table-sorted-variable.c new file mode 100644 index 0000000000..478038fdb7 --- /dev/null +++ b/widgets/table/e-table-sorted-variable.c @@ -0,0 +1,148 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ +/* + * E-table-sorted.c: Implements a table that sorts another table + * + * Author: + * Miguel de Icaza (miguel@gnu.org) + * + * (C) 1999 Helix Code, Inc. + */ +#include <config.h> +#include <stdlib.h> +#include <gtk/gtksignal.h> +#include <string.h> +#include "e-util/e-util.h" +#include "e-table-sorted-variable.h" + +#define PARENT_TYPE E_TABLE_SUBSET_VARIABLE_TYPE + +#define INCREMENT_AMOUNT 10 + +static ETableSubsetVariableClass *etsv_parent_class; + +static void etsv_proxy_model_changed (ETableModel *etm, ETableSortedVariable *etsv); +static void etsv_proxy_model_row_changed (ETableModel *etm, int row, ETableSortedVariable *etsv); +static void etsv_proxy_model_cell_changed (ETableModel *etm, int col, int row, ETableSortedVariable *etsv); +static void etsv_add (ETableSubsetVariable *etssv, gint row); + +static void +etsv_destroy (GtkObject *object) +{ + ETableSortedVariable *etsv = E_TABLE_SORTED_VARIABLE (object); + ETableSubset *etss = E_TABLE_SUBSET (object); + + gtk_signal_disconnect (GTK_OBJECT (etss->source), + etsv->table_model_changed_id); + gtk_signal_disconnect (GTK_OBJECT (etss->source), + etsv->table_model_row_changed_id); + gtk_signal_disconnect (GTK_OBJECT (etss->source), + etsv->table_model_cell_changed_id); + + etsv->table_model_changed_id = 0; + etsv->table_model_row_changed_id = 0; + etsv->table_model_cell_changed_id = 0; + + GTK_OBJECT_CLASS (etsv_parent_class)->destroy (object); +} + +static void +etsv_class_init (GtkObjectClass *object_class) +{ + ETableSubsetVariableClass *etssv_class = E_TABLE_SUBSET_VARIABLE_CLASS(object_class); + + etsv_parent_class = gtk_type_class (PARENT_TYPE); + + object_class->destroy = etsv_destroy; + + etssv_class->add = etsv_add; +} + +E_MAKE_TYPE(e_table_sorted_variable, "ETableSortedVariable", ETableSortedVariable, etsv_class_init, NULL, PARENT_TYPE); + +static void +etsv_add (ETableSubsetVariable *etssv, + gint row) +{ + ETableModel *etm = E_TABLE_MODEL(etssv); + ETableSubset *etss = E_TABLE_SUBSET(etssv); + ETableSortedVariable *etsv = E_TABLE_SORTED_VARIABLE(etssv); + int i; + int col = etsv->sort_col; + GCompareFunc comp = etsv->compare; + gint ascending = etsv->ascending; + + void *val = e_table_model_value_at(etss->source, col, row); + + /* FIXME: binary search anyone? */ + for ( i = 0; i < etss->n_map; i++ ) { + int comp_val = (*comp)(val, e_table_model_value_at(etss->source, col, etss->map_table[i])); + if ( (ascending && comp_val < 0) || ((!ascending) && comp_val > 0) ) + break; + } + if ( etss->n_map + 1 > etssv->n_vals_allocated ) { + etss->map_table = g_realloc(etss->map_table, (etssv->n_vals_allocated + INCREMENT_AMOUNT) * sizeof(int)); + etssv->n_vals_allocated += INCREMENT_AMOUNT; + } + if ( i < etss->n_map ) + memmove(etss->map_table + i + 1, etss->map_table + i, (etss->n_map - i) * sizeof(int)); + etss->map_table[i] = row; + etss->n_map++; + if ( !etm->frozen ) + e_table_model_changed(etm); +} + +ETableModel * +e_table_sorted_variable_new (ETableModel *source, int col, int ascending, GCompareFunc compare) +{ + ETableSortedVariable *etsv = gtk_type_new (E_TABLE_SORTED_VARIABLE_TYPE); + ETableSubsetVariable *etssv = E_TABLE_SUBSET_VARIABLE (etsv); + + if (e_table_subset_variable_construct (etssv, source) == NULL){ + gtk_object_destroy (GTK_OBJECT (etsv)); + return NULL; + } + + etsv->sort_col = col; + etsv->ascending = ascending; + etsv->compare = compare; + + etsv->table_model_changed_id = gtk_signal_connect (GTK_OBJECT (source), "model_changed", + GTK_SIGNAL_FUNC (etsv_proxy_model_changed), etsv); + etsv->table_model_row_changed_id = gtk_signal_connect (GTK_OBJECT (source), "model_row_changed", + GTK_SIGNAL_FUNC (etsv_proxy_model_row_changed), etsv); + etsv->table_model_cell_changed_id = gtk_signal_connect (GTK_OBJECT (source), "model_cell_changed", + GTK_SIGNAL_FUNC (etsv_proxy_model_cell_changed), etsv); + + return E_TABLE_MODEL(etsv); +} + +static void +etsv_proxy_model_changed (ETableModel *etm, ETableSortedVariable *etsv) +{ + if ( !E_TABLE_MODEL(etsv)->frozen ) { + /* FIXME: do_resort(); */ + } +} + +static void +etsv_proxy_model_row_changed (ETableModel *etm, int row, ETableSortedVariable *etsv) +{ + ETableSubsetVariable *etssv = E_TABLE_SUBSET_VARIABLE(etsv); + if ( !E_TABLE_MODEL(etsv)->frozen ) { + if(e_table_subset_variable_remove(etssv, row)) + e_table_subset_variable_add(etssv, row); + } +} + +static void +etsv_proxy_model_cell_changed (ETableModel *etm, int col, int row, ETableSortedVariable *etsv) +{ + ETableSubsetVariable *etssv = E_TABLE_SUBSET_VARIABLE(etsv); + if ( !E_TABLE_MODEL(etsv)->frozen ) { + if ( col == etsv->sort_col ) { + if(e_table_subset_variable_remove(etssv, row)) + e_table_subset_variable_add(etssv, row); + } + } +} + |