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-rw-r--r--widgets/misc/e-selection-model-array.c550
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diff --git a/widgets/misc/e-selection-model-array.c b/widgets/misc/e-selection-model-array.c
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-/* -*- 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);
- esma->selected_row = -1;
- esma->selected_range_end = -1;
- }
-}
-
-/* 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);
-
- esma->selected_row = -1;
- esma->selected_range_end = -1;
- 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;
-
- esma->selected_row = -1;
- esma->selected_range_end = -1;
- 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;
- }
- esma->selected_row = -1;
- esma->selected_range_end = -1;
- 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;
- esma->selected_row = -1;
- esma->selected_range_end = -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;
- esma->selected_row = -1;
- esma->selected_range_end = -1;
- 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;
- esma->selected_row = -1;
- esma->selected_range_end = -1;
- 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_real_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);
-
- esma->selection_start_row = row;
- esma->selected_row = row;
- esma->selected_range_end = row;
-}
-
-static void
-esma_select_single_row (ESelectionModel *selection, int row)
-{
- ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY(selection);
- int selected_row = esma->selected_row;
- esma_real_select_single_row (selection, row);
-
- if (selected_row != -1 && esma->eba && selected_row < e_bit_array_bit_count (esma->eba)) {
- if (selected_row != row) {
- e_selection_model_selection_row_changed(selection, selected_row);
- e_selection_model_selection_row_changed(selection, row);
- }
- } else {
- e_selection_model_selection_changed(selection);
- }
-}
-
-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;
- esma->selected_row = -1;
- esma->selected_range_end = -1;
- e_selection_model_selection_row_changed(E_SELECTION_MODEL(esma), row);
-}
-
-static void
-esma_real_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);
- esma->selected_row = -1;
- esma->selected_range_end = -1;
-}
-
-static void
-esma_move_selection_end (ESelectionModel *selection, int row)
-{
- esma_real_move_selection_end (selection, row);
- e_selection_model_selection_changed(selection);
-}
-
-static void
-esma_set_selection_end (ESelectionModel *selection, int row)
-{
- ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY(selection);
- int selected_range_end = esma->selected_range_end;
- int view_row = e_sorter_model_to_sorted(selection->sorter, row);
-
- esma_real_select_single_row(selection, esma->selection_start_row);
- esma->cursor_row = esma->selection_start_row;
- esma_real_move_selection_end(selection, row);
-
- esma->selected_range_end = view_row;
- if (selected_range_end != -1 && view_row != -1) {
- if (selected_range_end == view_row - 1 ||
- selected_range_end == view_row + 1) {
- e_selection_model_selection_row_changed(selection, selected_range_end);
- e_selection_model_selection_row_changed(selection, view_row);
- return;
- }
- }
- e_selection_model_selection_changed(selection);
-}
-
-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;
-
- esma->selected_row = -1;
- esma->selected_range_end = -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)