diff options
Diffstat (limited to 'widgets/text/e-completion.c')
| -rw-r--r-- | widgets/text/e-completion.c | 647 |
1 files changed, 0 insertions, 647 deletions
diff --git a/widgets/text/e-completion.c b/widgets/text/e-completion.c deleted file mode 100644 index 0d72e4690b..0000000000 --- a/widgets/text/e-completion.c +++ /dev/null @@ -1,647 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ - -/* ECompletion - A base class for text completion. - * Copyright (C) 2000, 2001 Ximian, Inc. - * - * Author: Miguel de Icaza <miguel@ximian.com> - * Adapted by Jon Trowbridge <trow@ximian.com> - * - */ - -/* - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or (at your option) any later version. - * - * 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 - * USA - */ - - -#include <config.h> -#include <string.h> -#include <stdio.h> -#include <gtk/gtk.h> -#include "e-completion.h" - -enum { - E_COMPLETION_REQUEST_COMPLETION, - E_COMPLETION_BEGIN_COMPLETION, - E_COMPLETION_COMPLETION, - E_COMPLETION_RESTART_COMPLETION, - E_COMPLETION_CANCEL_COMPLETION, - E_COMPLETION_END_COMPLETION, - E_COMPLETION_CLEAR_COMPLETION, - E_COMPLETION_LOST_COMPLETION, - E_COMPLETION_LAST_SIGNAL -}; - -static guint e_completion_signals[E_COMPLETION_LAST_SIGNAL] = { 0 }; - -struct _ECompletionPrivate { - gboolean searching; - gboolean done_search; - gboolean refining; - gchar *search_text; - GPtrArray *matches; - gint match_count; - gint pos; - gint limit; - double min_score, max_score; - gint refinement_count; - GList *search_stack; -}; - -typedef struct { - gchar *text; - gint pos; -} ECompletionSearch; - -static void e_completion_class_init (ECompletionClass *klass); -static void e_completion_init (ECompletion *complete); -static void e_completion_destroy (GtkObject *object); - -static void e_completion_add_match (ECompletion *complete, ECompletionMatch *); -static void e_completion_clear_search_stack (ECompletion *complete); -static void e_completion_clear_matches (ECompletion *complete); -static gboolean e_completion_sort (ECompletion *complete); -static void e_completion_restart (ECompletion *complete); - -static GtkObjectClass *parent_class; - - - -GtkType -e_completion_get_type (void) -{ - static GtkType complete_type = 0; - - if (!complete_type) { - GtkTypeInfo complete_info = { - "ECompletion", - sizeof (ECompletion), - sizeof (ECompletionClass), - (GtkClassInitFunc) e_completion_class_init, - (GtkObjectInitFunc) e_completion_init, - NULL, NULL, /* reserved */ - (GtkClassInitFunc) NULL - }; - - complete_type = gtk_type_unique (gtk_object_get_type (), &complete_info); - } - - return complete_type; -} - -static void -e_completion_class_init (ECompletionClass *klass) -{ - GtkObjectClass *object_class = (GtkObjectClass *) klass; - - parent_class = GTK_OBJECT_CLASS (gtk_type_class (gtk_object_get_type ())); - - e_completion_signals[E_COMPLETION_REQUEST_COMPLETION] = - gtk_signal_new ("request_completion", - GTK_RUN_LAST, - object_class->type, - GTK_SIGNAL_OFFSET (ECompletionClass, request_completion), - gtk_marshal_NONE__POINTER_INT_INT, - GTK_TYPE_NONE, 3, - GTK_TYPE_POINTER, GTK_TYPE_INT, GTK_TYPE_INT); - - e_completion_signals[E_COMPLETION_BEGIN_COMPLETION] = - gtk_signal_new ("begin_completion", - GTK_RUN_LAST, - object_class->type, - GTK_SIGNAL_OFFSET (ECompletionClass, begin_completion), - gtk_marshal_NONE__POINTER_INT_INT, - GTK_TYPE_NONE, 3, - GTK_TYPE_POINTER, GTK_TYPE_INT, GTK_TYPE_INT); - - e_completion_signals[E_COMPLETION_COMPLETION] = - gtk_signal_new ("completion", - GTK_RUN_LAST, - object_class->type, - GTK_SIGNAL_OFFSET (ECompletionClass, completion), - gtk_marshal_NONE__POINTER, - GTK_TYPE_NONE, 1, - GTK_TYPE_POINTER); - - e_completion_signals[E_COMPLETION_RESTART_COMPLETION] = - gtk_signal_new ("restart_completion", - GTK_RUN_LAST, - object_class->type, - GTK_SIGNAL_OFFSET (ECompletionClass, restart_completion), - gtk_marshal_NONE__NONE, - GTK_TYPE_NONE, 0); - - e_completion_signals[E_COMPLETION_CANCEL_COMPLETION] = - gtk_signal_new ("cancel_completion", - GTK_RUN_LAST, - object_class->type, - GTK_SIGNAL_OFFSET (ECompletionClass, cancel_completion), - gtk_marshal_NONE__NONE, - GTK_TYPE_NONE, 0); - - e_completion_signals[E_COMPLETION_END_COMPLETION] = - gtk_signal_new ("end_completion", - GTK_RUN_LAST, - object_class->type, - GTK_SIGNAL_OFFSET (ECompletionClass, end_completion), - gtk_marshal_NONE__NONE, - GTK_TYPE_NONE, 0); - - e_completion_signals[E_COMPLETION_CLEAR_COMPLETION] = - gtk_signal_new ("clear_completion", - GTK_RUN_LAST, - object_class->type, - GTK_SIGNAL_OFFSET (ECompletionClass, clear_completion), - gtk_marshal_NONE__NONE, - GTK_TYPE_NONE, 0); - - e_completion_signals[E_COMPLETION_LOST_COMPLETION] = - gtk_signal_new ("lost_completion", - GTK_RUN_LAST, - object_class->type, - GTK_SIGNAL_OFFSET (ECompletionClass, lost_completion), - gtk_marshal_NONE__POINTER, - GTK_TYPE_NONE, 1, GTK_TYPE_POINTER); - - gtk_object_class_add_signals (object_class, e_completion_signals, E_COMPLETION_LAST_SIGNAL); - - object_class->destroy = e_completion_destroy; -} - -static void -e_completion_init (ECompletion *complete) -{ - complete->priv = g_new0 (struct _ECompletionPrivate, 1); - complete->priv->matches = g_ptr_array_new (); -} - -static void -e_completion_destroy (GtkObject *object) -{ - ECompletion *complete = E_COMPLETION (object); - - g_free (complete->priv->search_text); - complete->priv->search_text = NULL; - - e_completion_clear_matches (complete); - e_completion_clear_search_stack (complete); - - g_ptr_array_free (complete->priv->matches, TRUE); - complete->priv->matches = NULL; - - g_free (complete->priv); - complete->priv = NULL; - - if (parent_class->destroy) - (parent_class->destroy) (object); -} - -static void -e_completion_add_match (ECompletion *complete, ECompletionMatch *match) -{ - g_return_if_fail (complete && E_IS_COMPLETION (complete)); - g_return_if_fail (match != NULL); - - g_ptr_array_add (complete->priv->matches, match); - - if (complete->priv->matches->len == 1) { - - complete->priv->min_score = complete->priv->max_score = match->score; - - } else { - - complete->priv->min_score = MIN (complete->priv->min_score, match->score); - complete->priv->max_score = MAX (complete->priv->max_score, match->score); - - } -} - -static void -e_completion_clear_matches (ECompletion *complete) -{ - ECompletionMatch *match; - GPtrArray *m; - int i; - - g_return_if_fail (E_IS_COMPLETION (complete)); - - m = complete->priv->matches; - for (i = 0; i < m->len; i++) { - match = g_ptr_array_index (m, i); - e_completion_match_unref (match); - } - g_ptr_array_set_size (m, 0); - - complete->priv->min_score = 0; - complete->priv->max_score = 0; -} - -void -e_completion_clear (ECompletion *complete) -{ - g_return_if_fail (E_IS_COMPLETION (complete)); - - /* FIXME: do we really want _clear and _clear_matches() ? */ - - /* I think yes, because it is convenient to be able to clear our match cache - without emitting a "clear_completion" signal. -JT */ - - e_completion_clear_matches (complete); - e_completion_clear_search_stack (complete); - complete->priv->refinement_count = 0; - complete->priv->match_count = 0; - gtk_signal_emit (GTK_OBJECT (complete), e_completion_signals[E_COMPLETION_CLEAR_COMPLETION]); -} - -static void -e_completion_push_search (ECompletion *complete, const gchar *text, gint pos) -{ - ECompletionSearch *search; - - g_return_if_fail (E_IS_COMPLETION (complete)); - - search = g_new (ECompletionSearch, 1); - search->text = complete->priv->search_text; - search->pos = complete->priv->pos; - complete->priv->search_stack = g_list_prepend (complete->priv->search_stack, search); - - complete->priv->search_text = g_strdup (text); - complete->priv->pos = pos; -} - -static void -e_completion_pop_search (ECompletion *complete) -{ - ECompletionSearch *search; - GList *old_link = complete->priv->search_stack; - - g_return_if_fail (E_IS_COMPLETION (complete)); - g_return_if_fail (complete->priv->search_stack != NULL); - - g_free (complete->priv->search_text); - - search = complete->priv->search_stack->data; - complete->priv->search_text = search->text; - complete->priv->pos = search->pos; - - g_free (search); - complete->priv->search_stack = g_list_remove_link (complete->priv->search_stack, - complete->priv->search_stack); - g_list_free_1 (old_link); -} - -static void -e_completion_clear_search_stack (ECompletion *complete) -{ - GList *iter; - - g_return_if_fail (E_IS_COMPLETION (complete)); - - for (iter = complete->priv->search_stack; iter != NULL; iter = g_list_next (iter)) { - ECompletionSearch *search = iter->data; - g_free (search->text); - g_free (search); - } - g_list_free (complete->priv->search_stack); - complete->priv->search_stack = NULL; -} - -static void -e_completion_refine_search (ECompletion *comp, const gchar *text, gint pos, ECompletionRefineFn refine_fn) -{ - GPtrArray *m; - gint i; - - comp->priv->refining = TRUE; - - e_completion_push_search (comp, text, pos); - - gtk_signal_emit (GTK_OBJECT (comp), e_completion_signals[E_COMPLETION_BEGIN_COMPLETION], text, pos, comp->priv->limit); - - comp->priv->match_count = 0; - - comp->priv->searching = TRUE; - - m = comp->priv->matches; - for (i = 0; i < m->len; ++i) { - ECompletionMatch *match = g_ptr_array_index (m, i); - if (comp->priv->refinement_count == match->hit_count - && refine_fn (comp, match, text, pos)) { - ++match->hit_count; - gtk_signal_emit (GTK_OBJECT (comp), e_completion_signals[E_COMPLETION_COMPLETION], match); - ++comp->priv->match_count; - } - } - - ++comp->priv->refinement_count; - - gtk_signal_emit (GTK_OBJECT (comp), e_completion_signals[E_COMPLETION_END_COMPLETION]); - - comp->priv->searching = FALSE; - comp->priv->refining = FALSE; -} - -static void -e_completion_unrefine_search (ECompletion *comp) -{ - GPtrArray *m; - gint i; - - comp->priv->refining = TRUE; - - e_completion_pop_search (comp); - - gtk_signal_emit (GTK_OBJECT (comp), e_completion_signals[E_COMPLETION_BEGIN_COMPLETION], comp->priv->search_text, comp->priv->pos, comp->priv->limit); - - comp->priv->match_count = 0; - --comp->priv->refinement_count; - - comp->priv->searching = TRUE; - - m = comp->priv->matches; - for (i = 0; i < m->len; ++i) { - ECompletionMatch *match = g_ptr_array_index (m, i); - if (comp->priv->refinement_count <= match->hit_count) { - match->hit_count = comp->priv->refinement_count; - gtk_signal_emit (GTK_OBJECT (comp), e_completion_signals[E_COMPLETION_COMPLETION], match); - ++comp->priv->match_count; - } - } - - gtk_signal_emit (GTK_OBJECT (comp), e_completion_signals[E_COMPLETION_END_COMPLETION]); - - comp->priv->searching = FALSE; - comp->priv->refining = FALSE; -} - -void -e_completion_begin_search (ECompletion *complete, const gchar *text, gint pos, gint limit) -{ - ECompletionClass *klass; - ECompletionRefineFn refine_fn; - - g_return_if_fail (complete != NULL); - g_return_if_fail (E_IS_COMPLETION (complete)); - g_return_if_fail (text != NULL); - - klass = E_COMPLETION_CLASS (GTK_OBJECT (complete)->klass); - - if (!complete->priv->searching && complete->priv->done_search) { - - /* If the search we are requesting is the same as what we had before our last refinement, - treat the request as an unrefine. */ - if (complete->priv->search_stack != NULL) { - ECompletionSearch *search = complete->priv->search_stack->data; - if ((klass->ignore_pos_on_auto_unrefine || search->pos == pos) - && !strcmp (search->text, text)) { - e_completion_unrefine_search (complete); - return; - } - } - - if (klass->auto_refine - && (refine_fn = klass->auto_refine (complete, - complete->priv->search_text, complete->priv->pos, - text, pos))) { - e_completion_refine_search (complete, text, pos, refine_fn); - return; - } - - } - - /* Stop any prior search. */ - if (complete->priv->searching) - e_completion_cancel_search (complete); - - e_completion_clear_search_stack (complete); - - g_free (complete->priv->search_text); - complete->priv->search_text = g_strdup (text); - - complete->priv->pos = pos; - complete->priv->searching = TRUE; - complete->priv->done_search = FALSE; - - e_completion_clear_matches (complete); - - complete->priv->limit = limit > 0 ? limit : G_MAXINT; - complete->priv->refinement_count = 0; - - gtk_signal_emit (GTK_OBJECT (complete), e_completion_signals[E_COMPLETION_BEGIN_COMPLETION], text, pos, limit); - gtk_signal_emit (GTK_OBJECT (complete), e_completion_signals[E_COMPLETION_REQUEST_COMPLETION], text, pos, limit); -} - -void -e_completion_cancel_search (ECompletion *complete) -{ - g_return_if_fail (complete != NULL); - g_return_if_fail (E_IS_COMPLETION (complete)); - - /* If there is no search to cancel, just silently return. */ - if (!complete->priv->searching) - return; - - gtk_signal_emit (GTK_OBJECT (complete), e_completion_signals[E_COMPLETION_CANCEL_COMPLETION]); - - complete->priv->searching = FALSE; -} - -gboolean -e_completion_searching (ECompletion *complete) -{ - g_return_val_if_fail (complete != NULL, FALSE); - g_return_val_if_fail (E_IS_COMPLETION (complete), FALSE); - - return complete->priv->searching; -} - -gboolean -e_completion_refining (ECompletion *complete) -{ - g_return_val_if_fail (complete != NULL, FALSE); - g_return_val_if_fail (E_IS_COMPLETION (complete), FALSE); - - return complete->priv->refining; -} - -const gchar * -e_completion_search_text (ECompletion *complete) -{ - g_return_val_if_fail (complete != NULL, NULL); - g_return_val_if_fail (E_IS_COMPLETION (complete), NULL); - - return complete->priv->search_text; -} - -gint -e_completion_search_text_pos (ECompletion *complete) -{ - g_return_val_if_fail (complete != NULL, -1); - g_return_val_if_fail (E_IS_COMPLETION (complete), -1); - - return complete->priv->pos; -} - -gint -e_completion_match_count (ECompletion *complete) -{ - g_return_val_if_fail (complete != NULL, 0); - g_return_val_if_fail (E_IS_COMPLETION (complete), 0); - - return complete->priv->refinement_count > 0 ? complete->priv->match_count : complete->priv->matches->len; -} - -void -e_completion_foreach_match (ECompletion *complete, ECompletionMatchFn fn, gpointer closure) -{ - GPtrArray *m; - int i; - - g_return_if_fail (complete != NULL); - g_return_if_fail (E_IS_COMPLETION (complete)); - - if (fn == NULL) - return; - - m = complete->priv->matches; - for (i = 0; i < m->len; i++) { - ECompletionMatch *match = g_ptr_array_index (m, i); - if (match->hit_count == complete->priv->refinement_count) { - fn (match, closure); - } - } -} - -ECompletion * -e_completion_new (void) -{ - return E_COMPLETION (gtk_type_new (e_completion_get_type ())); -} - -static gboolean -e_completion_sort (ECompletion *complete) -{ - GPtrArray *m; - int i; - GList *sort_list = NULL, *j; - gboolean diff; - - m = complete->priv->matches; - - for (i = 0; i < m->len; i++) - sort_list = g_list_append (sort_list, - g_ptr_array_index (m, i)); - - sort_list = g_list_sort (sort_list, (GCompareFunc) e_completion_match_compare_alpha); - - diff = FALSE; - - for (i=0, j=sort_list; i < m->len; i++, j = g_list_next (j)) { - if (g_ptr_array_index (m, i) == j->data) - continue; - - diff = TRUE; - g_ptr_array_index (m, i) = j->data; - } - - g_list_free (sort_list); - - return diff; -} - -/* Emit a restart signal and re-declare our matches, up to the limit. */ -static void -e_completion_restart (ECompletion *complete) -{ - GPtrArray *m; - gint i, count; - - gtk_signal_emit (GTK_OBJECT (complete), e_completion_signals[E_COMPLETION_RESTART_COMPLETION]); - - m = complete->priv->matches; - for (i = count = 0; - i < m->len && count < complete->priv->limit; - i++, count++) { - gtk_signal_emit (GTK_OBJECT (complete), - e_completion_signals[E_COMPLETION_COMPLETION], - g_ptr_array_index (m, i)); - } -} - -void -e_completion_found_match (ECompletion *complete, ECompletionMatch *match) -{ - g_return_if_fail (complete); - g_return_if_fail (E_IS_COMPLETION (complete)); - g_return_if_fail (match != NULL); - - if (! complete->priv->searching) { - g_warning ("e_completion_found_match(...,\"%s\",...) called outside of a search", match->match_text); - return; - } - - /* For now, do nothing when we hit the limit --- just don't - * announce the incoming matches. */ - if (complete->priv->matches->len >= complete->priv->limit) { - e_completion_match_unref (match); - return; - } - - e_completion_add_match (complete, match); - - gtk_signal_emit (GTK_OBJECT (complete), e_completion_signals[E_COMPLETION_COMPLETION], match); -} - -/* to optimize this, make the match a hash table */ -void -e_completion_lost_match (ECompletion *complete, ECompletionMatch *match) -{ - gboolean removed; - - g_return_if_fail (E_IS_COMPLETION (complete)); - g_return_if_fail (match != NULL); - - /* FIXME: remove fast */ - removed = g_ptr_array_remove (complete->priv->matches, - match); - - /* maybe just return here? */ - g_return_if_fail (removed); - - gtk_signal_emit (GTK_OBJECT (complete), e_completion_signals[E_COMPLETION_LOST_COMPLETION], match); - - e_completion_match_unref (match); -} - -void -e_completion_end_search (ECompletion *complete) -{ - g_return_if_fail (complete != NULL); - g_return_if_fail (E_IS_COMPLETION (complete)); - g_return_if_fail (complete->priv->searching); - - /* our table model should be sorted by a non-visible column of - * doubles (the score) rather than whatever we are doing - */ - /* If sorting by score accomplishes anything, issue a restart right before we end. */ - if (e_completion_sort (complete)) - e_completion_restart (complete); - - gtk_signal_emit (GTK_OBJECT (complete), e_completion_signals[E_COMPLETION_END_COMPLETION]); - - complete->priv->searching = FALSE; - complete->priv->done_search = TRUE; -} - |