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-rw-r--r--widgets/text/e-text-model.c378
1 files changed, 0 insertions, 378 deletions
diff --git a/widgets/text/e-text-model.c b/widgets/text/e-text-model.c
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index acd08ecb04..0000000000
--- a/widgets/text/e-text-model.c
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-/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
-/* ETextModel - 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-text-model.h"
-
-enum {
- E_TEXT_MODEL_CHANGED,
- E_TEXT_MODEL_LAST_SIGNAL
-};
-
-static guint e_text_model_signals[E_TEXT_MODEL_LAST_SIGNAL] = { 0 };
-
-static void e_text_model_class_init (ETextModelClass *class);
-static void e_text_model_init (ETextModel *model);
-static void e_text_model_destroy (GtkObject *object);
-
-static gchar *e_text_model_real_get_text(ETextModel *model);
-static void e_text_model_real_set_text(ETextModel *model, gchar *text);
-static void e_text_model_real_insert(ETextModel *model, gint postion, gchar *text);
-static void e_text_model_real_insert_length(ETextModel *model, gint postion, gchar *text, gint length);
-static void e_text_model_real_delete(ETextModel *model, gint postion, gint length);
-
-static gint e_text_model_real_object_count(ETextModel *model);
-static const gchar *e_text_model_real_get_nth_object(ETextModel *model, gint n);
-static void e_text_model_real_activate_nth_object(ETextModel *mode, gint n);
-
-
-static GtkObject *parent_class;
-
-
-
-/**
- * e_text_model_get_type:
- * @void:
- *
- * Registers the &ETextModel class if necessary, and returns the type ID
- * associated to it.
- *
- * Return value: The type ID of the &ETextModel class.
- **/
-GtkType
-e_text_model_get_type (void)
-{
- static GtkType model_type = 0;
-
- if (!model_type) {
- GtkTypeInfo model_info = {
- "ETextModel",
- sizeof (ETextModel),
- sizeof (ETextModelClass),
- (GtkClassInitFunc) e_text_model_class_init,
- (GtkObjectInitFunc) e_text_model_init,
- NULL, /* reserved_1 */
- NULL, /* reserved_2 */
- (GtkClassInitFunc) NULL
- };
-
- model_type = gtk_type_unique (gtk_object_get_type (), &model_info);
- }
-
- return model_type;
-}
-
-/* Class initialization function for the text item */
-static void
-e_text_model_class_init (ETextModelClass *klass)
-{
- GtkObjectClass *object_class;
-
- object_class = (GtkObjectClass *) klass;
-
- parent_class = gtk_type_class (gtk_object_get_type ());
-
- e_text_model_signals[E_TEXT_MODEL_CHANGED] =
- gtk_signal_new ("changed",
- GTK_RUN_LAST,
- object_class->type,
- GTK_SIGNAL_OFFSET (ETextModelClass, changed),
- gtk_marshal_NONE__NONE,
- GTK_TYPE_NONE, 0);
-
- gtk_object_class_add_signals (object_class, e_text_model_signals, E_TEXT_MODEL_LAST_SIGNAL);
-
- klass->changed = NULL;
- klass->get_text = e_text_model_real_get_text;
- klass->set_text = e_text_model_real_set_text;
- klass->insert = e_text_model_real_insert;
- klass->insert_length = e_text_model_real_insert_length;
- klass->delete = e_text_model_real_delete;
- klass->obj_count = e_text_model_real_object_count;
- klass->get_nth_obj = e_text_model_real_get_nth_object;
- klass->activate_nth_obj = e_text_model_real_activate_nth_object;
-
- object_class->destroy = e_text_model_destroy;
-}
-
-/* Object initialization function for the text item */
-static void
-e_text_model_init (ETextModel *model)
-{
- model->text = NULL;
-}
-
-/* Destroy handler for the text item */
-static void
-e_text_model_destroy (GtkObject *object)
-{
- ETextModel *model;
-
- g_return_if_fail (object != NULL);
- g_return_if_fail (E_IS_TEXT_MODEL (object));
-
- model = E_TEXT_MODEL (object);
-
- if (model->text)
- g_free (model->text);
-
- if (GTK_OBJECT_CLASS (parent_class)->destroy)
- (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
-}
-
-static gchar *
-e_text_model_real_get_text(ETextModel *model)
-{
- if (model->text)
- return model->text;
- else
- return "";
-}
-
-static void
-e_text_model_real_set_text(ETextModel *model, gchar *text)
-{
- if (model->text)
- g_free(model->text);
- model->text = g_strdup(text);
- e_text_model_changed(model);
-}
-
-static void
-e_text_model_real_insert(ETextModel *model, gint position, gchar *text)
-{
- gchar *temp = g_strdup_printf("%.*s%s%s", position, model->text, text, model->text + position);
- if (model->text)
- g_free(model->text);
- model->text = temp;
- e_text_model_changed(model);
-}
-
-static void
-e_text_model_real_insert_length(ETextModel *model, gint position, gchar *text, gint length)
-{
- gchar *temp = g_strdup_printf("%.*s%.*s%s", position, model->text, length, text, model->text + position);
- if (model->text)
- g_free(model->text);
- model->text = temp;
- e_text_model_changed(model);
-}
-
-static void
-e_text_model_real_delete(ETextModel *model, gint position, gint length)
-{
- memmove(model->text + position, model->text + position + length, strlen(model->text + position + length) + 1);
- e_text_model_changed(model);
-}
-
-static gint
-e_text_model_real_object_count(ETextModel *model)
-{
- gint count = 0;
- gchar *c = model->text;
-
- if (c) {
- while (*c) {
- if (*c == '\1')
- ++count;
- ++c;
- }
- }
- return count;
-}
-
-static const gchar *
-e_text_model_real_get_nth_object(ETextModel *model, gint n)
-{
- return "";
-}
-
-static void
-e_text_model_real_activate_nth_object(ETextModel *model, gint n)
-{
- /* By default, do nothing */
-}
-
-void
-e_text_model_changed(ETextModel *model)
-{
- g_return_if_fail (model != NULL);
- g_return_if_fail (E_IS_TEXT_MODEL (model));
-
- gtk_signal_emit (GTK_OBJECT (model),
- e_text_model_signals [E_TEXT_MODEL_CHANGED]);
-}
-
-gchar *
-e_text_model_get_text(ETextModel *model)
-{
- g_return_val_if_fail (model != NULL, NULL);
- g_return_val_if_fail (E_IS_TEXT_MODEL (model), NULL);
-
- if ( E_TEXT_MODEL_CLASS(GTK_OBJECT(model)->klass)->get_text )
- return E_TEXT_MODEL_CLASS(GTK_OBJECT(model)->klass)->get_text(model);
- else
- return "";
-}
-
-void
-e_text_model_set_text(ETextModel *model, gchar *text)
-{
- g_return_if_fail (model != NULL);
- g_return_if_fail (E_IS_TEXT_MODEL (model));
-
- if ( E_TEXT_MODEL_CLASS(GTK_OBJECT(model)->klass)->set_text )
- E_TEXT_MODEL_CLASS(GTK_OBJECT(model)->klass)->set_text(model, text);
-}
-
-void
-e_text_model_insert(ETextModel *model, gint position, gchar *text)
-{
- g_return_if_fail (model != NULL);
- g_return_if_fail (E_IS_TEXT_MODEL (model));
-
- if ( E_TEXT_MODEL_CLASS(GTK_OBJECT(model)->klass)->insert )
- E_TEXT_MODEL_CLASS(GTK_OBJECT(model)->klass)->insert(model, position, text);
-}
-
-void
-e_text_model_insert_length(ETextModel *model, gint position, gchar *text, gint length)
-{
- g_return_if_fail (model != NULL);
- g_return_if_fail (E_IS_TEXT_MODEL (model));
-
- if ( E_TEXT_MODEL_CLASS(GTK_OBJECT(model)->klass)->insert_length )
- E_TEXT_MODEL_CLASS(GTK_OBJECT(model)->klass)->insert_length(model, position, text, length);
-}
-
-void
-e_text_model_delete(ETextModel *model, gint position, gint length)
-{
- g_return_if_fail (model != NULL);
- g_return_if_fail (E_IS_TEXT_MODEL (model));
-
- if ( E_TEXT_MODEL_CLASS(GTK_OBJECT(model)->klass)->delete )
- E_TEXT_MODEL_CLASS(GTK_OBJECT(model)->klass)->delete(model, position, length);
-}
-
-gint
-e_text_model_object_count(ETextModel *model)
-{
- g_return_val_if_fail (model != NULL, 0);
- g_return_val_if_fail (E_IS_TEXT_MODEL (model), 0);
-
- if ( E_TEXT_MODEL_CLASS(GTK_OBJECT(model)->klass)->obj_count)
- return E_TEXT_MODEL_CLASS(GTK_OBJECT(model)->klass)->obj_count(model);
- else
- return 0;
-}
-
-const gchar *
-e_text_model_get_nth_object(ETextModel *model, gint n)
-{
- g_return_val_if_fail (model != NULL, NULL);
- g_return_val_if_fail (E_IS_TEXT_MODEL (model), NULL);
- g_return_val_if_fail (n >= 0, NULL);
-
- if ( E_TEXT_MODEL_CLASS(GTK_OBJECT(model)->klass)->get_nth_obj )
- return E_TEXT_MODEL_CLASS(GTK_OBJECT(model)->klass)->get_nth_obj(model, n);
- else
- return "";
-}
-
-void
-e_text_model_activate_nth_object(ETextModel *model, gint n)
-{
- g_return_if_fail (model != NULL);
- g_return_if_fail (E_IS_TEXT_MODEL (model));
- g_return_if_fail (n >= 0);
-
- if ( E_TEXT_MODEL_CLASS(GTK_OBJECT(model)->klass)->activate_nth_obj )
- E_TEXT_MODEL_CLASS(GTK_OBJECT(model)->klass)->activate_nth_obj(model, n);
-}
-
-gchar *
-e_text_model_strdup_expanded_text(ETextModel *model)
-{
- gint len = 0, i, N;
- gchar *expanded, *dest;
- const gchar *src;
-
- g_return_val_if_fail (model != NULL, NULL);
- g_return_val_if_fail (E_IS_TEXT_MODEL (model), NULL);
-
- if (model->text == NULL)
- return NULL;
-
- N = e_text_model_object_count (model);
- if (N == 0)
- return g_strdup (model->text);
-
- /* First, compute the length of the expanded string. */
-
- len = strlen (model->text);
- len -= N; /* Subtract out the \1s that signify the objects. */
-
- for (i=0; i<N; ++i)
- len += strlen (e_text_model_get_nth_object (model ,i));
-
-
- /* Next, allocate and build the expanded string. */
- expanded = g_new0 (gchar, len+1);
-
- src = model->text;
- dest = expanded;
- i = 0;
- while (*src) {
- if (*src == '\1') {
- const gchar *src_obj;
-
- g_assert (i < N);
- src_obj = e_text_model_get_nth_object (model, i);
-
- if (src_obj) {
- while (*src_obj) {
- *dest = *src_obj;
- ++src_obj;
- ++dest;
- }
- }
-
- ++src;
- ++i;
-
- } else {
-
- *dest = *src;
- ++src;
- ++dest;
-
- }
- }
-
- return expanded;
-}
-
-ETextModel *
-e_text_model_new(void)
-{
- ETextModel *model = gtk_type_new (e_text_model_get_type ());
- model->text = g_strdup("");
- return model;
-}