/*
* 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 <gdk/gdkkeysyms.h>
#include <glib/gi18n.h>
#include "e-util/e-util.h"
#include "e-selection-model.h"
G_DEFINE_TYPE (
ESelectionModel,
e_selection_model,
G_TYPE_OBJECT)
enum {
CURSOR_CHANGED,
CURSOR_ACTIVATED,
SELECTION_CHANGED,
SELECTION_ROW_CHANGED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0, };
enum {
PROP_0,
PROP_SORTER,
PROP_SELECTION_MODE,
PROP_CURSOR_MODE
};
inline static void
add_sorter (ESelectionModel *esm,
ESorter *sorter)
{
esm->sorter = sorter;
if (sorter) {
g_object_ref (sorter);
}
}
inline static void
drop_sorter (ESelectionModel *esm)
{
if (esm->sorter) {
g_object_unref (esm->sorter);
}
esm->sorter = NULL;
}
static void
esm_dispose (GObject *object)
{
ESelectionModel *esm;
esm = E_SELECTION_MODEL (object);
drop_sorter (esm);
/* Chain up to parent's dispose() method. */
G_OBJECT_CLASS (e_selection_model_parent_class)->dispose (object);
}
static void
esm_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
ESelectionModel *esm = E_SELECTION_MODEL (object);
switch (property_id) {
case PROP_SORTER:
g_value_set_object (value, esm->sorter);
break;
case PROP_SELECTION_MODE:
g_value_set_int (value, esm->mode);
break;
case PROP_CURSOR_MODE:
g_value_set_int (value, esm->cursor_mode);
break;
}
}
static void
esm_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
ESelectionModel *esm = E_SELECTION_MODEL (object);
switch (property_id) {
case PROP_SORTER:
drop_sorter (esm);
add_sorter (
esm, g_value_get_object (value) ?
E_SORTER (g_value_get_object (value)) : NULL);
break;
case PROP_SELECTION_MODE:
esm->mode = g_value_get_int (value);
if (esm->mode == GTK_SELECTION_SINGLE) {
gint cursor_row = e_selection_model_cursor_row (esm);
gint cursor_col = e_selection_model_cursor_col (esm);
e_selection_model_do_something (esm, cursor_row, cursor_col, 0);
}
break;
case PROP_CURSOR_MODE:
esm->cursor_mode = g_value_get_int (value);
break;
}
}
static void
e_selection_model_init (ESelectionModel *selection)
{
selection->mode = GTK_SELECTION_MULTIPLE;
selection->cursor_mode = E_CURSOR_SIMPLE;
selection->old_selection = -1;
}
static void
e_selection_model_class_init (ESelectionModelClass *class)
{
GObjectClass *object_class;
object_class = G_OBJECT_CLASS (class);
object_class->dispose = esm_dispose;
object_class->get_property = esm_get_property;
object_class->set_property = esm_set_property;
signals[CURSOR_CHANGED] = g_signal_new (
"cursor_changed",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ESelectionModelClass, cursor_changed),
NULL, NULL,
e_marshal_NONE__INT_INT,
G_TYPE_NONE, 2,
G_TYPE_INT,
G_TYPE_INT);
signals[CURSOR_ACTIVATED] = g_signal_new (
"cursor_activated",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ESelectionModelClass, cursor_activated),
NULL, NULL,
e_marshal_NONE__INT_INT,
G_TYPE_NONE, 2,
G_TYPE_INT,
G_TYPE_INT);
signals[SELECTION_CHANGED] = g_signal_new (
"selection_changed",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ESelectionModelClass, selection_changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
signals[SELECTION_ROW_CHANGED] = g_signal_new (
"selection_row_changed",
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ESelectionModelClass, selection_row_changed),
NULL, NULL,
g_cclosure_marshal_VOID__INT,
G_TYPE_NONE, 1,
G_TYPE_INT);
g_object_class_install_property (
object_class,
PROP_SORTER,
g_param_spec_object (
"sorter",
"Sorter",
NULL,
E_SORTER_TYPE,
G_PARAM_READWRITE));
g_object_class_install_property (
object_class,
PROP_SELECTION_MODE,
g_param_spec_int (
"selection_mode",
"Selection Mode",
NULL,
GTK_SELECTION_NONE,
GTK_SELECTION_MULTIPLE,
GTK_SELECTION_SINGLE,
G_PARAM_READWRITE));
g_object_class_install_property (
object_class,
PROP_CURSOR_MODE,
g_param_spec_int (
"cursor_mode",
"Cursor Mode",
NULL,
E_CURSOR_LINE,
E_CURSOR_SPREADSHEET,
E_CURSOR_LINE,
G_PARAM_READWRITE));
}
/**
* 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
*/
gboolean
e_selection_model_is_row_selected (ESelectionModel *selection,
gint n)
{
ESelectionModelClass *class;
g_return_val_if_fail (E_IS_SELECTION_MODEL (selection), FALSE);
class = E_SELECTION_MODEL_GET_CLASS (selection);
g_return_val_if_fail (class->is_row_selected != NULL, FALSE);
return class->is_row_selected (selection, n);
}
/**
* 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.
*/
void
e_selection_model_foreach (ESelectionModel *selection,
EForeachFunc callback,
gpointer closure)
{
ESelectionModelClass *class;
g_return_if_fail (E_IS_SELECTION_MODEL (selection));
g_return_if_fail (callback != NULL);
class = E_SELECTION_MODEL_GET_CLASS (selection);
g_return_if_fail (class->foreach != NULL);
class->foreach (selection, callback, closure);
}
/**
* e_selection_model_clear
* @selection: #ESelectionModel to clear
*
* This routine clears the selection to no rows selected.
*/
void
e_selection_model_clear (ESelectionModel *selection)
{
ESelectionModelClass *class;
g_return_if_fail (E_IS_SELECTION_MODEL (selection));
class = E_SELECTION_MODEL_GET_CLASS (selection);
g_return_if_fail (class->clear != NULL);
class->clear (selection);
}
/**
* 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.
*/
gint
e_selection_model_selected_count (ESelectionModel *selection)
{
ESelectionModelClass *class;
g_return_val_if_fail (E_IS_SELECTION_MODEL (selection), 0);
class = E_SELECTION_MODEL_GET_CLASS (selection);
g_return_val_if_fail (class->selected_count != NULL, 0);
return class->selected_count (selection);
}
/**
* e_selection_model_select_all
* @selection: #ESelectionModel to select all
*
* This routine selects all the rows in the given
* #ESelectionModel.
*/
void
e_selection_model_select_all (ESelectionModel *selection)
{
ESelectionModelClass *class;
g_return_if_fail (E_IS_SELECTION_MODEL (selection));
class = E_SELECTION_MODEL_GET_CLASS (selection);
g_return_if_fail (class->select_all != NULL);
class->select_all (selection);
}
/**
* e_selection_model_invert_selection
* @selection: #ESelectionModel to invert
*
* This routine inverts all the rows in the given
* #ESelectionModel.
*/
void
e_selection_model_invert_selection (ESelectionModel *selection)
{
ESelectionModelClass *class;
g_return_if_fail (E_IS_SELECTION_MODEL (selection));
class = E_SELECTION_MODEL_GET_CLASS (selection);
g_return_if_fail (class->invert_selection != NULL);
class->invert_selection (selection);
}
gint
e_selection_model_row_count (ESelectionModel *selection)
{
ESelectionModelClass *class;
g_return_val_if_fail (E_IS_SELECTION_MODEL (selection), 0);
class = E_SELECTION_MODEL_GET_CLASS (selection);
g_return_val_if_fail (class->row_count != NULL, 0);
return class->row_count (selection);
}
void
e_selection_model_change_one_row (ESelectionModel *selection,
gint row,
gboolean grow)
{
ESelectionModelClass *class;
g_return_if_fail (E_IS_SELECTION_MODEL (selection));
class = E_SELECTION_MODEL_GET_CLASS (selection);
g_return_if_fail (class->change_one_row != NULL);
return class->change_one_row (selection, row, grow);
}
void
e_selection_model_change_cursor (ESelectionModel *selection,
gint row,
gint col)
{
ESelectionModelClass *class;
g_return_if_fail (E_IS_SELECTION_MODEL (selection));
class = E_SELECTION_MODEL_GET_CLASS (selection);
g_return_if_fail (class->change_cursor != NULL);
class->change_cursor (selection, row, col);
}
gint
e_selection_model_cursor_row (ESelectionModel *selection)
{
ESelectionModelClass *class;
g_return_val_if_fail (E_IS_SELECTION_MODEL (selection), -1);
class = E_SELECTION_MODEL_GET_CLASS (selection);
g_return_val_if_fail (class->cursor_row != NULL, -1);
return class->cursor_row (selection);
}
gint
e_selection_model_cursor_col (ESelectionModel *selection)
{
ESelectionModelClass *class;
g_return_val_if_fail (E_IS_SELECTION_MODEL (selection), -1);
class = E_SELECTION_MODEL_GET_CLASS (selection);
g_return_val_if_fail (class->cursor_col != NULL, -1);
return class->cursor_col (selection);
}
void
e_selection_model_select_single_row (ESelectionModel *selection,
gint row)
{
ESelectionModelClass *class;
g_return_if_fail (E_IS_SELECTION_MODEL (selection));
class = E_SELECTION_MODEL_GET_CLASS (selection);
g_return_if_fail (class->select_single_row != NULL);
class->select_single_row (selection, row);
}
void
e_selection_model_toggle_single_row (ESelectionModel *selection,
gint row)
{
ESelectionModelClass *class;
g_return_if_fail (E_IS_SELECTION_MODEL (selection));
class = E_SELECTION_MODEL_GET_CLASS (selection);
g_return_if_fail (class->toggle_single_row != NULL);
class->toggle_single_row (selection, row);
}
void
e_selection_model_move_selection_end (ESelectionModel *selection,
gint row)
{
ESelectionModelClass *class;
g_return_if_fail (E_IS_SELECTION_MODEL (selection));
class = E_SELECTION_MODEL_GET_CLASS (selection);
g_return_if_fail (class->move_selection_end != NULL);
class->move_selection_end (selection, row);
}
void
e_selection_model_set_selection_end (ESelectionModel *selection,
gint row)
{
ESelectionModelClass *class;
g_return_if_fail (E_IS_SELECTION_MODEL (selection));
class = E_SELECTION_MODEL_GET_CLASS (selection);
g_return_if_fail (class->set_selection_end != NULL);
class->set_selection_end (selection, row);
}
/**
* e_selection_model_do_something
* @selection: #ESelectionModel to do something to.
* @row: The row to do something in.
* @col: The col to do something in.
* @state: The state in which to do something.
*
* This routine does whatever is appropriate as if the user clicked
* the mouse in the given row and column.
*/
void
e_selection_model_do_something (ESelectionModel *selection,
guint row,
guint col,
GdkModifierType state)
{
gint shift_p = state & GDK_SHIFT_MASK;
gint ctrl_p = state & GDK_CONTROL_MASK;
gint row_count;
g_return_if_fail (E_IS_SELECTION_MODEL (selection));
selection->old_selection = -1;
if (row == -1 && col != -1)
row = 0;
if (col == -1 && row != -1)
col = 0;
row_count = e_selection_model_row_count (selection);
if (row_count >= 0 && row < row_count) {
switch (selection->mode) {
case GTK_SELECTION_SINGLE:
e_selection_model_select_single_row (selection, row);
break;
case GTK_SELECTION_BROWSE:
case GTK_SELECTION_MULTIPLE:
if (shift_p) {
e_selection_model_set_selection_end (selection, row);
} else {
if (ctrl_p) {
e_selection_model_toggle_single_row (selection, row);
} else {
e_selection_model_select_single_row (selection, row);
}
}
break;
default:
g_return_if_reached ();
break;
}
e_selection_model_change_cursor (selection, row, col);
g_signal_emit (selection,
signals[CURSOR_CHANGED], 0,
row, col);
g_signal_emit (selection,
signals[CURSOR_ACTIVATED], 0,
row, col);
}
}
/**
* e_selection_model_maybe_do_something
* @selection: #ESelectionModel to do something to.
* @row: The row to do something in.
* @col: The col to do something in.
* @state: The state in which to do something.
*
* If this row is selected, this routine just moves the cursor row and
* column. Otherwise, it does the same thing as
* e_selection_model_do_something(). This is for being used on
* right clicks and other events where if the user hit the selection,
* they don't want it to change.
*/
gboolean
e_selection_model_maybe_do_something (ESelectionModel *selection,
guint row,
guint col,
GdkModifierType state)
{
g_return_val_if_fail (E_IS_SELECTION_MODEL (selection), FALSE);
selection->old_selection = -1;
if (e_selection_model_is_row_selected (selection, row)) {
e_selection_model_change_cursor (selection, row, col);
g_signal_emit (selection,
signals[CURSOR_CHANGED], 0,
row, col);
return FALSE;
} else {
e_selection_model_do_something (selection, row, col, state);
return TRUE;
}
}
void
e_selection_model_right_click_down (ESelectionModel *selection,
guint row,
guint col,
GdkModifierType state)
{
g_return_if_fail (E_IS_SELECTION_MODEL (selection));
if (selection->mode == GTK_SELECTION_SINGLE) {
selection->old_selection =
e_selection_model_cursor_row (selection);
e_selection_model_select_single_row (selection, row);
} else {
e_selection_model_maybe_do_something (
selection, row, col, state);
}
}
void
e_selection_model_right_click_up (ESelectionModel *selection)
{
g_return_if_fail (E_IS_SELECTION_MODEL (selection));
if (selection->mode != GTK_SELECTION_SINGLE)
return;
if (selection->old_selection == -1)
return;
e_selection_model_select_single_row (
selection, selection->old_selection);
}
void
e_selection_model_select_as_key_press (ESelectionModel *selection,
guint row,
guint col,
GdkModifierType state)
{
gint cursor_activated = TRUE;
gint shift_p = state & GDK_SHIFT_MASK;
gint ctrl_p = state & GDK_CONTROL_MASK;
g_return_if_fail (E_IS_SELECTION_MODEL (selection));
selection->old_selection = -1;
switch (selection->mode) {
case GTK_SELECTION_BROWSE:
case GTK_SELECTION_MULTIPLE:
if (shift_p) {
e_selection_model_set_selection_end (selection, row);
} else if (!ctrl_p) {
e_selection_model_select_single_row (selection, row);
} else
cursor_activated = FALSE;
break;
case GTK_SELECTION_SINGLE:
e_selection_model_select_single_row (selection, row);
break;
default:
g_return_if_reached ();
break;
}
if (row != -1) {
e_selection_model_change_cursor (selection, row, col);
g_signal_emit (selection,
signals[CURSOR_CHANGED], 0,
row, col);
if (cursor_activated)
g_signal_emit (selection,
signals[CURSOR_ACTIVATED], 0,
row, col);
}
}
static gint
move_selection (ESelectionModel *selection,
gboolean up,
GdkModifierType state)
{
gint row = e_selection_model_cursor_row (selection);
gint col = e_selection_model_cursor_col (selection);
gint row_count;
/* there is no selected row when row is -1 */
if (row != -1)
row = e_sorter_model_to_sorted (selection->sorter, row);
if (up)
row--;
else
row++;
if (row < 0)
row = 0;
row_count = e_selection_model_row_count (selection);
if (row >= row_count)
row = row_count - 1;
row = e_sorter_sorted_to_model (selection->sorter, row);
e_selection_model_select_as_key_press (selection, row, col, state);
return TRUE;
}
/**
* e_selection_model_key_press
* @selection: #ESelectionModel to affect.
* @key: The event.
*
* This routine does whatever is appropriate as if the user pressed
* the given key.
*
* Returns: %TRUE if the #ESelectionModel used the key.
*/
gboolean
e_selection_model_key_press (ESelectionModel *selection,
GdkEventKey *key)
{
g_return_val_if_fail (E_IS_SELECTION_MODEL (selection), FALSE);
g_return_val_if_fail (key != NULL, FALSE);
selection->old_selection = -1;
switch (key->keyval) {
case GDK_KEY_Up:
case GDK_KEY_KP_Up:
return move_selection (selection, TRUE, key->state);
case GDK_KEY_Down:
case GDK_KEY_KP_Down:
return move_selection (selection, FALSE, key->state);
case GDK_KEY_space:
case GDK_KEY_KP_Space:
if (selection->mode != GTK_SELECTION_SINGLE) {
gint row = e_selection_model_cursor_row (selection);
gint col = e_selection_model_cursor_col (selection);
if (row == -1)
break;
e_selection_model_toggle_single_row (selection, row);
g_signal_emit (selection,
signals[CURSOR_ACTIVATED], 0,
row, col);
return TRUE;
}
break;
case GDK_KEY_Return:
case GDK_KEY_KP_Enter:
if (selection->mode != GTK_SELECTION_SINGLE) {
gint row = e_selection_model_cursor_row (selection);
gint col = e_selection_model_cursor_col (selection);
e_selection_model_select_single_row (selection, row);
g_signal_emit (selection,
signals[CURSOR_ACTIVATED], 0,
row, col);
return TRUE;
}
break;
case GDK_KEY_Home:
case GDK_KEY_KP_Home:
if (selection->cursor_mode == E_CURSOR_LINE) {
gint row = 0;
gint cursor_col = e_selection_model_cursor_col (selection);
row = e_sorter_sorted_to_model (selection->sorter, row);
e_selection_model_select_as_key_press (
selection, row, cursor_col, key->state);
return TRUE;
}
break;
case GDK_KEY_End:
case GDK_KEY_KP_End:
if (selection->cursor_mode == E_CURSOR_LINE) {
gint row = e_selection_model_row_count (selection) - 1;
gint cursor_col = e_selection_model_cursor_col (selection);
row = e_sorter_sorted_to_model (selection->sorter, row);
e_selection_model_select_as_key_press (
selection, row, cursor_col, key->state);
return TRUE;
}
break;
}
return FALSE;
}
void
e_selection_model_cursor_changed (ESelectionModel *selection,
gint row,
gint col)
{
g_return_if_fail (E_IS_SELECTION_MODEL (selection));
g_signal_emit (selection, signals[CURSOR_CHANGED], 0, row, col);
}
void
e_selection_model_cursor_activated (ESelectionModel *selection,
gint row,
gint col)
{
g_return_if_fail (E_IS_SELECTION_MODEL (selection));
g_signal_emit (selection, signals[CURSOR_ACTIVATED], 0, row, col);
}
void
e_selection_model_selection_changed (ESelectionModel *selection)
{
g_return_if_fail (E_IS_SELECTION_MODEL (selection));
g_signal_emit (selection, signals[SELECTION_CHANGED], 0);
}
void
e_selection_model_selection_row_changed (ESelectionModel *selection,
gint row)
{
g_return_if_fail (E_IS_SELECTION_MODEL (selection));
g_signal_emit (selection, signals[SELECTION_ROW_CHANGED], 0, row);
}
