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Diffstat (limited to 'widgets/table/e-table-text-model.c')
| -rw-r--r-- | widgets/table/e-table-text-model.c | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/widgets/table/e-table-text-model.c b/widgets/table/e-table-text-model.c new file mode 100644 index 0000000000..69ffdc3568 --- /dev/null +++ b/widgets/table/e-table-text-model.c @@ -0,0 +1,217 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ +/* ETableTextModel - Text item model for evolution. + * Copyright (C) 2000 Helix Code, Inc. + * + * Author: Chris Lahey <clahey@umich.edu> + * + * A majority of code taken from: + * + * Text item type for GnomeCanvas widget + * + * GnomeCanvas is basically a port of the Tk toolkit's most excellent + * canvas widget. Tk is copyrighted by the Regents of the University + * of California, Sun Microsystems, and other parties. + * + * Copyright (C) 1998 The Free Software Foundation + * + * Author: Federico Mena <federico@nuclecu.unam.mx> */ + +#include <config.h> +#include <ctype.h> +#include "e-table-text-model.h" + +static void e_table_text_model_class_init (ETableTextModelClass *class); +static void e_table_text_model_init (ETableTextModel *model); +static void e_table_text_model_destroy (GtkObject *object); + +static gchar *e_table_text_model_get_text(ETextModel *model); +static void e_table_text_model_set_text(ETextModel *model, gchar *text); +static void e_table_text_model_insert(ETextModel *model, gint postion, gchar *text); +static void e_table_text_model_insert_length(ETextModel *model, gint postion, gchar *text, gint length); +static void e_table_text_model_delete(ETextModel *model, gint postion, gint length); + +static GtkObject *parent_class; + + + +/** + * e_table_text_model_get_type: + * @void: + * + * Registers the &ETableTextModel class if necessary, and returns the type ID + * associated to it. + * + * Return value: The type ID of the &ETableTextModel class. + **/ +GtkType +e_table_text_model_get_type (void) +{ + static GtkType model_type = 0; + + if (!model_type) { + GtkTypeInfo model_info = { + "ETableTextModel", + sizeof (ETableTextModel), + sizeof (ETableTextModelClass), + (GtkClassInitFunc) e_table_text_model_class_init, + (GtkObjectInitFunc) e_table_text_model_init, + NULL, /* reserved_1 */ + NULL, /* reserved_2 */ + (GtkClassInitFunc) NULL + }; + + model_type = gtk_type_unique (e_text_model_get_type (), &model_info); + } + + return model_type; +} + +/* Class initialization function for the text item */ +static void +e_table_text_model_class_init (ETableTextModelClass *klass) +{ + GtkObjectClass *object_class; + ETextModelClass *model_class; + + object_class = (GtkObjectClass *) klass; + model_class = (ETextModelClass *) klass; + + parent_class = gtk_type_class (e_text_model_get_type ()); + + model_class->get_text = e_table_text_model_get_text; + model_class->set_text = e_table_text_model_set_text; + model_class->insert = e_table_text_model_insert; + model_class->insert_length = e_table_text_model_insert_length; + model_class->delete = e_table_text_model_delete; + + object_class->destroy = e_table_text_model_destroy; +} + +/* Object initialization function for the text item */ +static void +e_table_text_model_init (ETableTextModel *model) +{ + model->model = NULL; + model->row = 0; + model->model_col = 0; + model->cell_changed_signal_id = 0; + model->row_changed_signal_id = 0; +} + +/* Destroy handler for the text item */ +static void +e_table_text_model_destroy (GtkObject *object) +{ + ETableTextModel *model; + + g_return_if_fail (object != NULL); + g_return_if_fail (E_IS_TEXT_MODEL (object)); + + model = E_TABLE_TEXT_MODEL (object); + + if (model->cell_changed_signal_id) + gtk_signal_disconnect(GTK_OBJECT(model->model), + model->cell_changed_signal_id); + + if (model->row_changed_signal_id) + gtk_signal_disconnect(GTK_OBJECT(model->model), + model->row_changed_signal_id); + + if (model->model) + gtk_object_unref(GTK_OBJECT(model->model)); + + if (GTK_OBJECT_CLASS (parent_class)->destroy) + (* GTK_OBJECT_CLASS (parent_class)->destroy) (object); +} +static gchar * +e_table_text_model_get_text(ETextModel *text_model) +{ + ETableTextModel *model = E_TABLE_TEXT_MODEL(text_model); + if ( model->model ) + return (gchar *)e_table_model_value_at(model->model, model->model_col, model->row); + else + return ""; +} + +static void +e_table_text_model_set_text(ETextModel *text_model, gchar *text) +{ + ETableTextModel *model = E_TABLE_TEXT_MODEL(text_model); + if ( model->model ) + e_table_model_set_value_at(model->model, model->model_col, model->row, (void *) text); +} + +static void +e_table_text_model_insert(ETextModel *text_model, gint position, gchar *text) +{ + ETableTextModel *model = E_TABLE_TEXT_MODEL(text_model); + if ( model->model ) { + gchar *temp = (gchar *)e_table_model_value_at(model->model, model->model_col, model->row); + temp = g_strdup_printf("%.*s%s%s", position, temp, text, temp + position); + e_table_model_set_value_at(model->model, model->model_col, model->row, temp); + g_free(temp); + } +} + +static void +e_table_text_model_insert_length(ETextModel *text_model, gint position, gchar *text, gint length) +{ + ETableTextModel *model = E_TABLE_TEXT_MODEL(text_model); + if ( model->model ) { + gchar *temp = (gchar *)e_table_model_value_at(model->model, model->model_col, model->row); + temp = g_strdup_printf("%.*s%.*s%s", position, temp, length, text, temp + position); + e_table_model_set_value_at(model->model, model->model_col, model->row, temp); + g_free(temp); + } +} + +static void +e_table_text_model_delete(ETextModel *text_model, gint position, gint length) +{ + ETableTextModel *model = E_TABLE_TEXT_MODEL(text_model); + if ( model->model ) { + gchar *temp = (gchar *)e_table_model_value_at(model->model, model->model_col, model->row); + temp = g_strdup_printf("%.*s%s", position, temp, temp + position + length); + e_table_model_set_value_at(model->model, model->model_col, model->row, temp); + g_free(temp); + } +} + +static void +cell_changed(ETableModel *table_model, int model_col, int row, ETableTextModel *model) +{ + if (model->model_col == model_col && + model->row == row) + e_text_model_changed(E_TEXT_MODEL(model)); +} + +static void +row_changed(ETableModel *table_model, int row, ETableTextModel *model) +{ + if (model->row == row) + e_text_model_changed(E_TEXT_MODEL(model)); +} + +ETableTextModel * +e_table_text_model_new(ETableModel *table_model, int row, int model_col) +{ + ETableTextModel *model = gtk_type_new (e_table_text_model_get_type ()); + model->model = table_model; + if ( model->model ) { + gtk_object_ref(GTK_OBJECT(model->model)); + model->cell_changed_signal_id = + gtk_signal_connect(GTK_OBJECT(model->model), + "model_cell_changed", + GTK_SIGNAL_FUNC(cell_changed), + model); + model->row_changed_signal_id = + gtk_signal_connect(GTK_OBJECT(model->model), + "model_row_changed", + GTK_SIGNAL_FUNC(row_changed), + model); + } + model->row = row; + model->model_col = model_col; + return model; +} + |