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-rw-r--r--e-util/e-selection-model-array.c646
1 files changed, 646 insertions, 0 deletions
diff --git a/e-util/e-selection-model-array.c b/e-util/e-selection-model-array.c
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+++ b/e-util/e-selection-model-array.c
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+/*
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) version 3.
+ *
+ * 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ *
+ * Authors:
+ * Chris Lahey <clahey@ximian.com>
+ *
+ * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <gtk/gtk.h>
+
+#include <glib/gi18n.h>
+
+#include "e-selection-model-array.h"
+
+G_DEFINE_TYPE (
+ ESelectionModelArray,
+ e_selection_model_array,
+ E_TYPE_SELECTION_MODEL)
+
+enum {
+ PROP_0,
+ PROP_CURSOR_ROW,
+ PROP_CURSOR_COL
+};
+
+void
+e_selection_model_array_confirm_row_count (ESelectionModelArray *esma)
+{
+ if (esma->eba == NULL) {
+ gint 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;
+ }
+}
+
+static gint
+es_row_model_to_sorted (ESelectionModelArray *esma,
+ gint model_row)
+{
+ if (model_row >= 0 && esma && esma->base.sorter && e_sorter_needs_sorting (esma->base.sorter))
+ return e_sorter_model_to_sorted (esma->base.sorter, model_row);
+
+ return model_row;
+}
+
+static gint
+es_row_sorted_to_model (ESelectionModelArray *esma,
+ gint sorted_row)
+{
+ if (sorted_row >= 0 && esma && esma->base.sorter && e_sorter_needs_sorting (esma->base.sorter))
+ return e_sorter_sorted_to_model (esma->base.sorter, sorted_row);
+
+ return sorted_row;
+}
+
+/* FIXME: Should this deal with moving the selection if it's in single mode? */
+void
+e_selection_model_array_delete_rows (ESelectionModelArray *esma,
+ gint row,
+ gint 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 && esma->cursor_row < row + count) {
+ /* we should move the cursor_row, because some lines before us are going to be removed */
+ if (esma->cursor_row_sorted >= e_bit_array_bit_count (esma->eba)) {
+ esma->cursor_row_sorted = e_bit_array_bit_count (esma->eba) - 1;
+ }
+
+ if (esma->cursor_row_sorted >= 0) {
+ esma->cursor_row = es_row_sorted_to_model (esma, esma->cursor_row_sorted);
+ esma->selection_start_row = 0;
+ e_bit_array_change_one_row (esma->eba, esma->cursor_row, TRUE);
+ } else {
+ esma->cursor_row = -1;
+ esma->cursor_row_sorted = -1;
+ esma->selection_start_row = 0;
+ }
+ } else {
+ /* some code earlier changed the selected row, so just update the sorted one */
+ if (esma->cursor_row >= row)
+ esma->cursor_row = MAX (0, esma->cursor_row - count);
+
+ if (esma->cursor_row >= e_bit_array_bit_count (esma->eba))
+ esma->cursor_row = e_bit_array_bit_count (esma->eba) - 1;
+
+ if (esma->cursor_row >= 0) {
+ esma->cursor_row_sorted = es_row_model_to_sorted (esma, esma->cursor_row);
+ esma->selection_start_row = 0;
+ e_bit_array_change_one_row (esma->eba, esma->cursor_row, TRUE);
+ } else {
+ esma->cursor_row = -1;
+ esma->cursor_row_sorted = -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), esma->cursor_row, esma->cursor_col);
+ }
+}
+
+void
+e_selection_model_array_insert_rows (ESelectionModelArray *esma,
+ gint row,
+ gint count)
+{
+ if (esma->eba) {
+ e_bit_array_insert (esma->eba, row, count);
+
+ /* just recalculate new position of the previously set cursor row */
+ esma->cursor_row = es_row_sorted_to_model (esma, esma->cursor_row_sorted);
+
+ 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,
+ gint old_row,
+ gint 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);
+ gint old_row_sorted, new_row_sorted;
+
+ old_row_sorted = es_row_model_to_sorted (esma, old_row);
+ new_row_sorted = es_row_model_to_sorted (esma, new_row);
+
+ if (old_row_sorted < esma->cursor_row_sorted && esma->cursor_row_sorted < new_row_sorted)
+ esma->cursor_row_sorted--;
+ else if (new_row_sorted < esma->cursor_row_sorted && esma->cursor_row_sorted < old_row_sorted)
+ esma->cursor_row_sorted++;
+
+ 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->cursor_row_sorted = es_row_model_to_sorted (esma, esma->cursor_row);
+ } else
+ esma->cursor_row = es_row_sorted_to_model (esma, esma->cursor_row_sorted);
+
+ 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_dispose (GObject *object)
+{
+ ESelectionModelArray *esma;
+
+ esma = E_SELECTION_MODEL_ARRAY (object);
+
+ if (esma->eba) {
+ g_object_unref (esma->eba);
+ esma->eba = NULL;
+ }
+
+ /* Chain up to parent's dispose() method. */
+ G_OBJECT_CLASS (e_selection_model_array_parent_class)->dispose (object);
+}
+
+static void
+esma_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY (object);
+
+ switch (property_id) {
+ case PROP_CURSOR_ROW:
+ g_value_set_int (value, esma->cursor_row);
+ break;
+
+ case PROP_CURSOR_COL:
+ g_value_set_int (value, esma->cursor_col);
+ break;
+ }
+}
+
+static void
+esma_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ ESelectionModel *esm = E_SELECTION_MODEL (object);
+ ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY (object);
+
+ switch (property_id) {
+ case PROP_CURSOR_ROW:
+ e_selection_model_do_something (esm, g_value_get_int (value), esma->cursor_col, 0);
+ break;
+
+ case PROP_CURSOR_COL:
+ e_selection_model_do_something (esm, esma->cursor_row, g_value_get_int (value), 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) {
+ g_object_unref (esma->eba);
+ esma->eba = NULL;
+ }
+ esma->cursor_row = -1;
+ esma->cursor_col = -1;
+ esma->cursor_row_sorted = -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_sorted = 0;
+ esma->cursor_row = es_row_sorted_to_model (esma, esma->cursor_row_sorted);
+ esma->selection_start_row = esma->cursor_row;
+ 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->cursor_row_sorted = -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 gint
+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,
+ gint 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,
+ gint row,
+ gint 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;
+ esma->cursor_row_sorted = es_row_model_to_sorted (esma, esma->cursor_row);
+}
+
+static void
+esma_change_range (ESelectionModel *selection,
+ gint start,
+ gint end,
+ gboolean grow)
+{
+ gint 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 gint
+esma_cursor_row (ESelectionModel *selection)
+{
+ ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY (selection);
+ return esma->cursor_row;
+}
+
+static gint
+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,
+ gint 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,
+ gint row)
+{
+ ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY (selection);
+ gint 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,
+ gint 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,
+ gint row)
+{
+ ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY (selection);
+ gint old_start;
+ gint old_end;
+ gint new_start;
+ gint 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,
+ gint row)
+{
+ esma_real_move_selection_end (selection, row);
+ e_selection_model_selection_changed (selection);
+}
+
+static void
+esma_set_selection_end (ESelectionModel *selection,
+ gint row)
+{
+ ESelectionModelArray *esma = E_SELECTION_MODEL_ARRAY (selection);
+ gint selected_range_end = esma->selected_range_end;
+ gint 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->cursor_row_sorted = es_row_model_to_sorted (esma, esma->cursor_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);
+ }
+ }
+ e_selection_model_selection_changed (selection);
+}
+
+gint
+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 (E_SELECTION_MODEL_ARRAY_GET_CLASS (esma)->get_row_count)
+ return E_SELECTION_MODEL_ARRAY_GET_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->cursor_row_sorted = -1;
+
+ esma->selected_row = -1;
+ esma->selected_range_end = -1;
+}
+
+static void
+e_selection_model_array_class_init (ESelectionModelArrayClass *class)
+{
+ GObjectClass *object_class;
+ ESelectionModelClass *esm_class;
+
+ object_class = G_OBJECT_CLASS (class);
+ esm_class = E_SELECTION_MODEL_CLASS (class);
+
+ object_class->dispose = esma_dispose;
+ object_class->get_property = esma_get_property;
+ object_class->set_property = esma_set_property;
+
+ 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;
+
+ class->get_row_count = NULL;
+
+ g_object_class_install_property (
+ object_class,
+ PROP_CURSOR_ROW,
+ g_param_spec_int (
+ "cursor_row",
+ "Cursor Row",
+ NULL,
+ 0, G_MAXINT, 0,
+ G_PARAM_READWRITE));
+
+ g_object_class_install_property (
+ object_class,
+ PROP_CURSOR_COL,
+ g_param_spec_int (
+ "cursor_col",
+ "Cursor Column",
+ NULL,
+ 0, G_MAXINT, 0,
+ G_PARAM_READWRITE));
+}
+
generated by cgit (git 2.34.1) at 2024-11-12 02:32:13 +0800