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evolution/widgets/misc/e-selection-model.c
Chris Toshok 555aa35da2 this derives from GObject now. 
2002-11-14  Chris Toshok  <toshok@ximian.com>

	* gal/widgets/e-selection-model.[ch]: this derives from GObject now.

	* gal/widgets/e-selection-model-simple.[ch]: same.

	* gal/widgets/e-selection-model-array.[ch]: same.

	* gal/widgets/e-reflow-model.[ch]: same.

	* gal/widgets/e-reflow.c: fix all references to EReflowModel such
	that it's a GObject, not a GtkObject.

svn path=/trunk/; revision=18772
2002-11-15 02:18:33 +00:00

690 lines
18 KiB
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* e-selection-model.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 <gdk/gdkkeysyms.h>
#include "e-selection-model.h"
#include "gal/util/e-i18n.h"
#include "gal/util/e-util.h"
#define PARENT_TYPE G_TYPE_OBJECT
static GObjectClass *e_selection_model_parent_class;
enum {
CURSOR_CHANGED,
CURSOR_ACTIVATED,
SELECTION_CHANGED,
SELECTION_ROW_CHANGED,
LAST_SIGNAL
};
static guint e_selection_model_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);
if (e_selection_model_parent_class->dispose)
(* e_selection_model_parent_class->dispose) (object);
}
static void
esm_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
ESelectionModel *esm = E_SELECTION_MODEL (object);
switch (prop_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 prop_id, const GValue *value, GParamSpec *pspec)
{
ESelectionModel *esm = E_SELECTION_MODEL (object);
switch (prop_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) {
int cursor_row = e_selection_model_cursor_row(esm);
int 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 *klass)
{
GObjectClass *object_class;
e_selection_model_parent_class = g_type_class_ref (PARENT_TYPE);
object_class = G_OBJECT_CLASS(klass);
object_class->dispose = esm_dispose;
object_class->get_property = esm_get_property;
object_class->set_property = esm_set_property;
e_selection_model_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);
e_selection_model_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);
e_selection_model_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,
e_marshal_NONE__NONE,
G_TYPE_NONE, 0);
e_selection_model_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,
e_marshal_NONE__INT,
G_TYPE_NONE, 1, G_TYPE_INT);
klass->cursor_changed = NULL;
klass->cursor_activated = NULL;
klass->selection_changed = NULL;
klass->selection_row_changed = NULL;
klass->is_row_selected = NULL;
klass->foreach = NULL;
klass->clear = NULL;
klass->selected_count = NULL;
klass->select_all = NULL;
klass->invert_selection = NULL;
klass->row_count = NULL;
klass->change_one_row = NULL;
klass->change_cursor = NULL;
klass->cursor_row = NULL;
klass->cursor_col = NULL;
klass->select_single_row = NULL;
klass->toggle_single_row = NULL;
klass->move_selection_end = NULL;
klass->set_selection_end = NULL;
g_object_class_install_property (object_class, PROP_SORTER,
g_param_spec_object ("sorter",
_("Sorter"),
/*_( */"XXX blurb" /*)*/,
E_SORTER_TYPE,
G_PARAM_READWRITE));
g_object_class_install_property (object_class, PROP_SELECTION_MODE,
g_param_spec_int ("selection_mode",
_("Selection Mode"),
/*_( */"XXX blurb" /*)*/,
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"),
/*_( */"XXX blurb" /*)*/,
E_CURSOR_LINE, E_CURSOR_SPREADSHEET,
E_CURSOR_LINE,
G_PARAM_READWRITE));
}
E_MAKE_TYPE(e_selection_model, "ESelectionModel", ESelectionModel,
e_selection_model_class_init, e_selection_model_init, PARENT_TYPE)
/**
* 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)
{
if (E_SELECTION_MODEL_GET_CLASS(selection)->is_row_selected)
return E_SELECTION_MODEL_GET_CLASS(selection)->is_row_selected (selection, 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.
*/
void
e_selection_model_foreach (ESelectionModel *selection,
EForeachFunc callback,
gpointer closure)
{
if (E_SELECTION_MODEL_GET_CLASS(selection)->foreach)
E_SELECTION_MODEL_GET_CLASS(selection)->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)
{
if (E_SELECTION_MODEL_GET_CLASS(selection)->clear)
E_SELECTION_MODEL_GET_CLASS(selection)->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)
{
if (E_SELECTION_MODEL_GET_CLASS(selection)->selected_count)
return E_SELECTION_MODEL_GET_CLASS(selection)->selected_count (selection);
else
return 0;
}
/**
* 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)
{
if (E_SELECTION_MODEL_GET_CLASS(selection)->select_all)
E_SELECTION_MODEL_GET_CLASS(selection)->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)
{
if (E_SELECTION_MODEL_GET_CLASS(selection)->invert_selection)
E_SELECTION_MODEL_GET_CLASS(selection)->invert_selection (selection);
}
int
e_selection_model_row_count (ESelectionModel *selection)
{
if (E_SELECTION_MODEL_GET_CLASS(selection)->row_count)
return E_SELECTION_MODEL_GET_CLASS(selection)->row_count (selection);
else
return 0;
}
void
e_selection_model_change_one_row(ESelectionModel *selection, int row, gboolean grow)
{
if (E_SELECTION_MODEL_GET_CLASS(selection)->change_one_row)
E_SELECTION_MODEL_GET_CLASS(selection)->change_one_row (selection, row, grow);
}
void
e_selection_model_change_cursor (ESelectionModel *selection, int row, int col)
{
if (E_SELECTION_MODEL_GET_CLASS(selection)->change_cursor)
E_SELECTION_MODEL_GET_CLASS(selection)->change_cursor (selection, row, col);
}
int
e_selection_model_cursor_row (ESelectionModel *selection)
{
if (E_SELECTION_MODEL_GET_CLASS(selection)->cursor_row)
return E_SELECTION_MODEL_GET_CLASS(selection)->cursor_row (selection);
else
return -1;
}
int
e_selection_model_cursor_col (ESelectionModel *selection)
{
if (E_SELECTION_MODEL_GET_CLASS(selection)->cursor_col)
return E_SELECTION_MODEL_GET_CLASS(selection)->cursor_col (selection);
else
return -1;
}
void
e_selection_model_select_single_row (ESelectionModel *selection, int row)
{
if (E_SELECTION_MODEL_GET_CLASS(selection)->select_single_row)
E_SELECTION_MODEL_GET_CLASS(selection)->select_single_row (selection, row);
}
void
e_selection_model_toggle_single_row (ESelectionModel *selection, int row)
{
if (E_SELECTION_MODEL_GET_CLASS(selection)->toggle_single_row)
E_SELECTION_MODEL_GET_CLASS(selection)->toggle_single_row (selection, row);
}
void
e_selection_model_move_selection_end (ESelectionModel *selection, int row)
{
if (E_SELECTION_MODEL_GET_CLASS(selection)->move_selection_end)
E_SELECTION_MODEL_GET_CLASS(selection)->move_selection_end (selection, row);
}
void
e_selection_model_set_selection_end (ESelectionModel *selection, int row)
{
if (E_SELECTION_MODEL_GET_CLASS(selection)->set_selection_end)
E_SELECTION_MODEL_GET_CLASS(selection)->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;
int row_count;
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_assert_not_reached ();
break;
}
e_selection_model_change_cursor(selection, row, col);
g_signal_emit(selection,
e_selection_model_signals[CURSOR_CHANGED], 0,
row, col);
g_signal_emit(selection,
e_selection_model_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)
{
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,
e_selection_model_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)
{
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)
{
if (selection->mode == GTK_SELECTION_SINGLE && selection->old_selection != -1) {
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)
{
int cursor_activated = TRUE;
gint shift_p = state & GDK_SHIFT_MASK;
gint ctrl_p = state & GDK_CONTROL_MASK;
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_assert_not_reached ();
break;
}
if (row != -1) {
e_selection_model_change_cursor(selection, row, col);
g_signal_emit(selection,
e_selection_model_signals[CURSOR_CHANGED], 0,
row, col);
if (cursor_activated)
g_signal_emit(selection,
e_selection_model_signals[CURSOR_ACTIVATED], 0,
row, col);
}
}
static gint
move_selection (ESelectionModel *selection,
gboolean up,
GdkModifierType state)
{
int row = e_selection_model_cursor_row(selection);
int col = e_selection_model_cursor_col(selection);
int row_count;
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.
*/
gint
e_selection_model_key_press (ESelectionModel *selection,
GdkEventKey *key)
{
selection->old_selection = -1;
switch (key->keyval) {
case GDK_Up:
case GDK_KP_Up:
return move_selection(selection, TRUE, key->state);
break;
case GDK_Down:
case GDK_KP_Down:
return move_selection(selection, FALSE, key->state);
break;
case GDK_space:
case GDK_KP_Space:
if (selection->mode != GTK_SELECTION_SINGLE) {
int row = e_selection_model_cursor_row(selection);
int col = e_selection_model_cursor_col(selection);
e_selection_model_toggle_single_row (selection, row);
g_signal_emit(selection,
e_selection_model_signals[CURSOR_ACTIVATED], 0,
row, col);
return TRUE;
}
break;
case GDK_Return:
case GDK_KP_Enter:
if (selection->mode != GTK_SELECTION_SINGLE) {
int row = e_selection_model_cursor_row(selection);
int col = e_selection_model_cursor_col(selection);
e_selection_model_select_single_row (selection, row);
g_signal_emit(selection,
e_selection_model_signals[CURSOR_ACTIVATED], 0,
row, col);
return TRUE;
}
break;
case GDK_Home:
case GDK_KP_Home:
if (selection->cursor_mode == E_CURSOR_LINE) {
int row = 0;
int 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_End:
case GDK_KP_End:
if (selection->cursor_mode == E_CURSOR_LINE) {
int row = e_selection_model_row_count(selection) - 1;
int 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,
int row,
int col)
{
g_signal_emit(selection,
e_selection_model_signals[CURSOR_CHANGED], 0,
row, col);
}
void
e_selection_model_cursor_activated (ESelectionModel *selection,
int row,
int col)
{
g_signal_emit(selection,
e_selection_model_signals[CURSOR_ACTIVATED], 0,
row, col);
}
void
e_selection_model_selection_changed (ESelectionModel *selection)
{
g_signal_emit(selection,
e_selection_model_signals[SELECTION_CHANGED], 0);
}
void
e_selection_model_selection_row_changed (ESelectionModel *selection,
int row)
{
g_signal_emit(selection,
e_selection_model_signals[SELECTION_ROW_CHANGED], 0,
row);
}
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