/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* e-selection-model-array.c
* Copyright 2000, 2001, Ximian, Inc.
*
* Authors:
* Chris Lahey <clahey@ximian.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License, version 2, as published by the Free Software Foundation.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include <config.h>
#include <gtk/gtksignal.h>
#include "e-selection-model-array.h"
#include "gal/util/e-util.h"
#define ESMA_CLASS(e) ((ESelectionModelArrayClass *)((GtkObject *)e)->klass)
#define PARENT_TYPE e_selection_model_get_type ()
static ESelectionModelClass *parent_class;
enum {
ARG_0,
ARG_CURSOR_ROW,
ARG_CURSOR_COL,
};
void
e_selection_model_array_confirm_row_count(ESelectionModelArray *esma)
{
if (esma->eba == NULL) {
int row_count = e_selection_model_array_get_row_count(esma);
esma->eba = e_bit_array_new(row_count);
}
}
/* FIXME: Should this deal with moving the selection if it's in single mode? */
void
e_selection_model_array_delete_rows(ESelectionModelArray *esma, int row, int count)
{
if (esma->eba) {
if (E_SELECTION_MODEL(esma)->mode == GTK_SELECTION_SINGLE)
e_bit_array_delete_single_mode(esma->eba, row, count);
else
e_bit_array_delete(esma->eba, row, count);
if (esma->cursor_row > row + count)
esma->cursor_row -= count;
else if (esma->cursor_row > row)
esma->cursor_row = row;
if (esma->cursor_row >= e_bit_array_bit_count (esma->eba)) {
esma->cursor_row = e_bit_array_bit_count (esma->eba) - 1;
} else if (esma->cursor_row < 0) {
esma->cursor_row = -1;
}
if (esma->cursor_row >= 0)
e_bit_array_change_one_row(esma->eba, esma->cursor_row, TRUE);
e_selection_model_selection_changed(E_SELECTION_MODEL(esma));
e_selection_model_cursor_changed(E_SELECTION_MODEL(esma), esma->cursor_row, esma->cursor_col);
}
}
void
e_selection_model_array_insert_rows(ESelectionModelArray *esma, int row, int count)
{
if (esma->eba) {
e_bit_array_insert(esma->eba, row, count);
if (esma->cursor_row >= row)
esma->cursor_row += count;
e_selection_model_selection_changed(E_SELECTION_MODEL(esma));
e_selection_model_cursor_changed(E_SELECTION_MODEL(esma), esma->cursor_row, esma->cursor_col);
}
}
void
e_selection_model_array_move_row(ESelectionModelArray *esma, int old_row, int new_row)
{
ESelectionModel *esm = E_SELECTION_MODEL(esma);
if (esma->eba) {
gboolean selected = e_bit_array_value_at(esma->eba, old_row);
gboolean cursor = (esma->cursor_row == old_row);
if (old_row < esma->cursor_row && esma->cursor_row < new_row)
esma->cursor_row --;
else if (new_row < esma->cursor_row && esma->cursor_row < old_row)
esma->cursor_row ++;
e_bit_array_move_row(esma->eba, old_row, new_row);
if (selected) {
if (esm->mode == GTK_SELECTION_SINGLE)
e_bit_array_select_single_row (esma->eba, new_row);
else
e_bit_array_change_one_row(esma->eba, new_row, TRUE);
}
if (cursor) {
esma->cursor_row = new_row;
}
e_selection_model_selection_changed(esm);
e_selection_model_cursor_changed(esm, esma->cursor_row, esma->cursor_col);
}
}
static void
esma_destroy (GtkObject *object)
{
ESelectionModelArray *esma;
esma = E_SELECTION_MODEL_ARRAY (object);
if (esma->eba) {
gtk_object_unref(GTK_OBJECT(esma->eba));
esma->eba = NULL;
}
if (GTK_OBJECT_CLASS (parent_class)->destroy)
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}
static void
esma_get_arg (GtkObject *o, GtkArg *arg, guint arg_id)
{
ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY (o);
switch (arg_id){
case ARG_CURSOR_ROW:
GTK_VALUE_INT(*arg) = esma->cursor_row;
break;
case ARG_CURSOR_COL:
GTK_VALUE_INT(*arg) = esma->cursor_col;
break;
}
}
static void
esma_set_arg (GtkObject *o, GtkArg *arg, guint arg_id)
{
ESelectionModel *esm = E_SELECTION_MODEL (o);
ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY (o);
switch (arg_id){
case ARG_CURSOR_ROW:
e_selection_model_do_something(esm, GTK_VALUE_INT(*arg), esma->cursor_col, 0);
break;
case ARG_CURSOR_COL:
e_selection_model_do_something(esm, esma->cursor_row, GTK_VALUE_INT(*arg), 0);
break;
}
}
/**
* e_selection_model_is_row_selected
* @selection: #ESelectionModel to check
* @n: The row to check
*
* This routine calculates whether the given row is selected.
*
* Returns: %TRUE if the given row is selected
*/
static gboolean
esma_is_row_selected (ESelectionModel *selection,
gint n)
{
ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY(selection);
if (esma->eba)
return e_bit_array_value_at(esma->eba, n);
else
return FALSE;
}
/**
* e_selection_model_foreach
* @selection: #ESelectionModel to traverse
* @callback: The callback function to call back.
* @closure: The closure
*
* This routine calls the given callback function once for each
* selected row, passing closure as the closure.
*/
static void
esma_foreach (ESelectionModel *selection,
EForeachFunc callback,
gpointer closure)
{
ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY(selection);
if (esma->eba)
e_bit_array_foreach(esma->eba, callback, closure);
}
/**
* e_selection_model_clear
* @selection: #ESelectionModel to clear
*
* This routine clears the selection to no rows selected.
*/
static void
esma_clear(ESelectionModel *selection)
{
ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY(selection);
if (esma->eba) {
gtk_object_unref(GTK_OBJECT(esma->eba));
esma->eba = NULL;
}
esma->cursor_row = -1;
esma->cursor_col = -1;
e_selection_model_selection_changed(E_SELECTION_MODEL(esma));
e_selection_model_cursor_changed(E_SELECTION_MODEL(esma), -1, -1);
}
#define PART(x,n) (((x) & (0x01010101 << n)) >> n)
#define SECTION(x, n) (((x) >> (n * 8)) & 0xff)
/**
* e_selection_model_selected_count
* @selection: #ESelectionModel to count
*
* This routine calculates the number of rows selected.
*
* Returns: The number of rows selected in the given model.
*/
static gint
esma_selected_count (ESelectionModel *selection)
{
ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY(selection);
if (esma->eba)
return e_bit_array_selected_count(esma->eba);
else
return 0;
}
/**
* e_selection_model_select_all
* @selection: #ESelectionModel to select all
*
* This routine selects all the rows in the given
* #ESelectionModel.
*/
static void
esma_select_all (ESelectionModel *selection)
{
ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY(selection);
e_selection_model_array_confirm_row_count(esma);
e_bit_array_select_all(esma->eba);
esma->cursor_col = 0;
esma->cursor_row = 0;
esma->selection_start_row = 0;
e_selection_model_selection_changed(E_SELECTION_MODEL(esma));
e_selection_model_cursor_changed(E_SELECTION_MODEL(esma), 0, 0);
}
/**
* e_selection_model_invert_selection
* @selection: #ESelectionModel to invert
*
* This routine inverts all the rows in the given
* #ESelectionModel.
*/
static void
esma_invert_selection (ESelectionModel *selection)
{
ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY(selection);
e_selection_model_array_confirm_row_count(esma);
e_bit_array_invert_selection(esma->eba);
esma->cursor_col = -1;
esma->cursor_row = -1;
esma->selection_start_row = 0;
e_selection_model_selection_changed(E_SELECTION_MODEL(esma));
e_selection_model_cursor_changed(E_SELECTION_MODEL(esma), -1, -1);
}
static int
esma_row_count (ESelectionModel *selection)
{
ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY(selection);
e_selection_model_array_confirm_row_count(esma);
return e_bit_array_bit_count(esma->eba);
}
static void
esma_change_one_row(ESelectionModel *selection, int row, gboolean grow)
{
ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY(selection);
e_selection_model_array_confirm_row_count(esma);
e_bit_array_change_one_row(esma->eba, row, grow);
}
static void
esma_change_cursor (ESelectionModel *selection, int row, int col)
{
ESelectionModelArray *esma;
g_return_if_fail(selection != NULL);
g_return_if_fail(E_IS_SELECTION_MODEL(selection));
esma = E_SELECTION_MODEL_ARRAY(selection);
esma->cursor_row = row;
esma->cursor_col = col;
}
static void
esma_change_range(ESelectionModel *selection, int start, int end, gboolean grow)
{
int i;
ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY(selection);
if (start != end) {
if (selection->sorter && e_sorter_needs_sorting(selection->sorter)) {
for ( i = start; i < end; i++) {
e_bit_array_change_one_row(esma->eba, e_sorter_sorted_to_model(selection->sorter, i), grow);
}
} else {
e_selection_model_array_confirm_row_count(esma);
e_bit_array_change_range(esma->eba, start, end, grow);
}
}
}
static int
esma_cursor_row (ESelectionModel *selection)
{
ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY(selection);
return esma->cursor_row;
}
static int
esma_cursor_col (ESelectionModel *selection)
{
ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY(selection);
return esma->cursor_col;
}
static void
esma_select_single_row (ESelectionModel *selection, int row)
{
ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY(selection);
e_selection_model_array_confirm_row_count(esma);
e_bit_array_select_single_row(esma->eba, row);
e_selection_model_selection_changed(E_SELECTION_MODEL(esma));
esma->selection_start_row = row;
}
static void
esma_toggle_single_row (ESelectionModel *selection, int row)
{
ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY(selection);
e_selection_model_array_confirm_row_count(esma);
e_bit_array_toggle_single_row(esma->eba, row);
esma->selection_start_row = row;
e_selection_model_selection_changed(E_SELECTION_MODEL(esma));
}
static void
esma_move_selection_end (ESelectionModel *selection, int row)
{
ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY(selection);
int old_start;
int old_end;
int new_start;
int new_end;
if (selection->sorter && e_sorter_needs_sorting(selection->sorter)) {
old_start = MIN (e_sorter_model_to_sorted(selection->sorter, esma->selection_start_row),
e_sorter_model_to_sorted(selection->sorter, esma->cursor_row));
old_end = MAX (e_sorter_model_to_sorted(selection->sorter, esma->selection_start_row),
e_sorter_model_to_sorted(selection->sorter, esma->cursor_row)) + 1;
new_start = MIN (e_sorter_model_to_sorted(selection->sorter, esma->selection_start_row),
e_sorter_model_to_sorted(selection->sorter, row));
new_end = MAX (e_sorter_model_to_sorted(selection->sorter, esma->selection_start_row),
e_sorter_model_to_sorted(selection->sorter, row)) + 1;
} else {
old_start = MIN (esma->selection_start_row, esma->cursor_row);
old_end = MAX (esma->selection_start_row, esma->cursor_row) + 1;
new_start = MIN (esma->selection_start_row, row);
new_end = MAX (esma->selection_start_row, row) + 1;
}
/* This wouldn't work nearly so smoothly if one end of the selection weren't held in place. */
if (old_start < new_start)
esma_change_range(selection, old_start, new_start, FALSE);
if (new_start < old_start)
esma_change_range(selection, new_start, old_start, TRUE);
if (old_end < new_end)
esma_change_range(selection, old_end, new_end, TRUE);
if (new_end < old_end)
esma_change_range(selection, new_end, old_end, FALSE);
e_selection_model_selection_changed(E_SELECTION_MODEL(esma));
}
static void
esma_set_selection_end (ESelectionModel *selection, int row)
{
ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY(selection);
esma_select_single_row(selection, esma->selection_start_row);
esma->cursor_row = esma->selection_start_row;
esma_move_selection_end(selection, row);
}
int
e_selection_model_array_get_row_count (ESelectionModelArray *esma)
{
g_return_val_if_fail(esma != NULL, 0);
g_return_val_if_fail(E_IS_SELECTION_MODEL_ARRAY(esma), 0);
if (ESMA_CLASS(esma)->get_row_count)
return ESMA_CLASS(esma)->get_row_count (esma);
else
return 0;
}
static void
e_selection_model_array_init (ESelectionModelArray *esma)
{
esma->eba = NULL;
esma->selection_start_row = 0;
esma->cursor_row = -1;
esma->cursor_col = -1;
}
static void
e_selection_model_array_class_init (ESelectionModelArrayClass *klass)
{
GtkObjectClass *object_class;
ESelectionModelClass *esm_class;
parent_class = gtk_type_class (e_selection_model_get_type ());
object_class = GTK_OBJECT_CLASS(klass);
esm_class = E_SELECTION_MODEL_CLASS(klass);
object_class->destroy = esma_destroy;
object_class->get_arg = esma_get_arg;
object_class->set_arg = esma_set_arg;
esm_class->is_row_selected = esma_is_row_selected ;
esm_class->foreach = esma_foreach ;
esm_class->clear = esma_clear ;
esm_class->selected_count = esma_selected_count ;
esm_class->select_all = esma_select_all ;
esm_class->invert_selection = esma_invert_selection ;
esm_class->row_count = esma_row_count ;
esm_class->change_one_row = esma_change_one_row ;
esm_class->change_cursor = esma_change_cursor ;
esm_class->cursor_row = esma_cursor_row ;
esm_class->cursor_col = esma_cursor_col ;
esm_class->select_single_row = esma_select_single_row ;
esm_class->toggle_single_row = esma_toggle_single_row ;
esm_class->move_selection_end = esma_move_selection_end ;
esm_class->set_selection_end = esma_set_selection_end ;
klass->get_row_count = NULL ;
gtk_object_add_arg_type ("ESelectionModelArray::cursor_row", GTK_TYPE_INT,
GTK_ARG_READWRITE, ARG_CURSOR_ROW);
gtk_object_add_arg_type ("ESelectionModelArray::cursor_col", GTK_TYPE_INT,
GTK_ARG_READWRITE, ARG_CURSOR_COL);
}
E_MAKE_TYPE(e_selection_model_array, "ESelectionModelArray", ESelectionModelArray,
e_selection_model_array_class_init, e_selection_model_array_init, PARENT_TYPE);