path: root/mail/mail-search.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

/*
 * mail-search.c
 *
 * Copyright (C) 2001 Ximian, Inc.
 *
 * Developed 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.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "mail-search.h"
#include "e-searching-tokenizer.h"
#include <gal/widgets/e-unicode.h>
#include <gtkhtml/gtkhtml-search.h>
#include <gtkhtml/htmlengine.h>
#include <libgnomeui/gnome-window-icon.h>

static GtkObjectClass *parent_class;

static void
mail_search_destroy (GtkObject *obj)
{
    MailSearch *ms = MAIL_SEARCH (obj);

    gtk_signal_disconnect (GTK_OBJECT (ms->mail->html->engine->ht),
                   ms->match_handler);
    gtk_signal_disconnect (GTK_OBJECT (ms->mail->html->engine->ht),
                   ms->begin_handler);

    g_free (ms->last_search);
    gtk_object_unref (GTK_OBJECT (ms->mail));
}

static void
mail_search_class_init (MailSearchClass *klass)
{
    GtkObjectClass *object_class = (GtkObjectClass *) klass;
    parent_class = GTK_OBJECT_CLASS (gtk_type_class (gnome_dialog_get_type ()));
    
    object_class->destroy = mail_search_destroy;
}

static void
mail_search_init (MailSearch *ms)
{

}

GtkType
mail_search_get_type (void)
{
    static GtkType mail_search_type = 0;

    if (! mail_search_type) {
        GtkTypeInfo mail_search_info = {
            "MailSearch",
            sizeof (MailSearch),
            sizeof (MailSearchClass),
            (GtkClassInitFunc) mail_search_class_init,
            (GtkObjectInitFunc) mail_search_init,
            NULL, NULL, /* mysteriously reserved */
            (GtkClassInitFunc) NULL
        };

        mail_search_type = gtk_type_unique (gnome_dialog_get_type (), &mail_search_info);
    }

    return mail_search_type;
}

/*
 *  Convenience
 */

static ESearchingTokenizer *
mail_search_tokenizer (MailSearch *ms)
{
    return E_SEARCHING_TOKENIZER (ms->mail->html->engine->ht);
}

static void
mail_search_redisplay_message (MailSearch *ms)
{
    mail_display_redisplay (ms->mail, FALSE);
}

static void
mail_search_set_subject (MailSearch *ms, const gchar *subject)
{
    gchar *utf8_subject = NULL;
    gchar *gtk_subject = NULL;

    if (subject && *subject) {
        
        utf8_subject = g_strdup (subject);

        if (g_utf8_validate (utf8_subject, -1, NULL)) {
            
            const gint ARBITRARY_CUTOFF = 40;

            if (g_utf8_strlen (utf8_subject, -1) > ARBITRARY_CUTOFF) {
                gchar *p = g_utf8_offset_to_pointer (utf8_subject, ARBITRARY_CUTOFF);
                strcpy (p, "...");
            }
            
        } else {
            /* If the subject contains bad utf8, don't show anything in the frame label. */
            g_free (utf8_subject);
            utf8_subject = NULL;
        }

        if (utf8_subject)
            gtk_subject = e_utf8_to_gtk_string (GTK_WIDGET (ms->msg_frame), utf8_subject);

    } else {

        gtk_subject = g_strdup (_("(Untitled Message)"));

    }

    gtk_frame_set_label (GTK_FRAME (ms->msg_frame), gtk_subject);

    g_free (gtk_subject);
    g_free (utf8_subject);
}

/*
 *  Construct Objects
 */

static void
toggled_case_cb (GtkToggleButton *b, MailSearch *ms)
{
    ms->case_sensitive = gtk_toggle_button_get_active (b);

    e_searching_tokenizer_set_primary_case_sensitivity (mail_search_tokenizer (ms),
                                ms->case_sensitive);
    mail_search_redisplay_message (ms);
    
}

#if 0
static void
toggled_fwd_cb (GtkToggleButton *b, MailSearch *ms)
{
    ms->search_forward = gtk_toggle_button_get_active (b);
    gtk_html_engine_search_set_forward (ms->mail->html, ms->search_forward);
}
#endif

static void
dialog_destroy_cb (GtkWidget *w, MailSearch *ms) 
{
    ESearchingTokenizer *st = mail_search_tokenizer (ms);

    e_searching_tokenizer_set_primary_search_string (st, NULL);
    mail_search_redisplay_message (ms);
}

static void
dialog_clicked_cb (GtkWidget *w, gint button_number, MailSearch *ms)
{
    ESearchingTokenizer *st = mail_search_tokenizer (ms);
    
    if (button_number == 0) {        /* "Search" */

        char *search_text, *tmp;
    
        tmp = gtk_editable_get_chars (GTK_EDITABLE (ms->entry), 0, -1);

        g_strstrip (tmp);
        search_text = e_utf8_from_gtk_string ((GtkWidget *) ms->entry, tmp);
        g_free (tmp);

        if (search_text && *search_text) {
        
            if (ms->last_search && !strcmp (ms->last_search, search_text)) {
                
                if (! gtk_html_engine_search_next (ms->mail->html)) {
                    g_free (ms->last_search);
                    ms->last_search = NULL;
                }

            } else {

                g_free (ms->last_search);
                ms->last_search = NULL;

                e_searching_tokenizer_set_primary_search_string (st, search_text);
                e_searching_tokenizer_set_primary_case_sensitivity (st, ms->case_sensitive);

                mail_search_redisplay_message (ms);

                if (gtk_html_engine_search (ms->mail->html, search_text,
                                ms->case_sensitive, ms->search_forward,
                                FALSE)) {
                    ms->last_search = g_strdup (search_text);
                }
            }
        }

    
        g_free (search_text);

    } else if (button_number == 1) { /* "Close"  */
        gtk_widget_destroy (w);
    }
}

static void
begin_cb (ESearchingTokenizer *st, gchar *foo, MailSearch *ms)
{
    const gchar *subject;

    if (ms && ms->mail && ms->mail->current_message) {
        
        subject = ms->mail->current_message->subject;

        if (subject == NULL)
            subject = _("Untitled Message");

    } else {

        subject = _("Empty Message");
        
    }

    gtk_label_set_text (GTK_LABEL (ms->count_label), "0");
    mail_search_set_subject (ms, subject);
}

static void
match_cb (ESearchingTokenizer *st, MailSearch *ms)
{
    gchar buf[16];
    g_snprintf (buf, 16, "%d", e_searching_tokenizer_match_count (st));
    gtk_label_set_text (GTK_LABEL (ms->count_label), buf);
}

void
mail_search_construct (MailSearch *ms, MailDisplay *mail)
{
    const gchar *buttons[] = { _("Search"),
                   GNOME_STOCK_BUTTON_CLOSE,
                   NULL };
    gchar *title = NULL;

    GtkWidget *find_hbox;
    GtkWidget *matches_hbox;
    GtkWidget *toggles_hbox;
    GtkWidget *frame_vbox;

    GtkWidget *entry;
    GtkWidget *count_label;
    GtkWidget *case_check;
#if 0
    GtkWidget *fwd_check;
#endif

    GtkWidget *msg_hbox;
    GtkWidget *msg_frame;

    g_return_if_fail (ms != NULL && IS_MAIL_SEARCH (ms));
    g_return_if_fail (mail != NULL && IS_MAIL_DISPLAY (mail));

    /* Basic set-up */

    ms->mail = mail;
    gtk_object_ref (GTK_OBJECT (mail));

    title = g_strdup (_("Find in Message")); 
    
    gnome_dialog_constructv (GNOME_DIALOG (ms), title, buttons);
    g_free (title);

    ms->search_forward = TRUE;
    ms->case_sensitive = FALSE;

    ms->begin_handler = gtk_signal_connect (GTK_OBJECT (ms->mail->html->engine->ht),
                        "begin",
                        GTK_SIGNAL_FUNC (begin_cb),
                        ms);
    ms->match_handler = gtk_signal_connect (GTK_OBJECT (ms->mail->html->engine->ht),
                        "match",
                        GTK_SIGNAL_FUNC (match_cb),
                        ms);

    /* Construct the dialog contents. */
    
    msg_hbox     = gtk_hbox_new (FALSE, 0);
    find_hbox    = gtk_hbox_new (FALSE, 0);
    matches_hbox = gtk_hbox_new (FALSE, 0);
    toggles_hbox = gtk_hbox_new (FALSE, 0);
    frame_vbox   = gtk_vbox_new (FALSE, 0);

    entry       = gtk_entry_new ();
    count_label = gtk_label_new ("0");

    msg_frame   = gtk_frame_new (NULL); 

    case_check  = gtk_check_button_new_with_label (_("Case Sensitive"));
#if 0
    fwd_check   = gtk_check_button_new_with_label (_("Search Forward"));
#endif

    ms->entry       = entry;
    ms->count_label = count_label;

    ms->msg_frame   = msg_frame;

    if (mail->current_message->subject && *mail->current_message->subject)
        mail_search_set_subject (ms, mail->current_message->subject);
    else
        mail_search_set_subject (ms, NULL);

#if 0
    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (fwd_check),  ms->search_forward);
#endif
    gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (case_check), ms->case_sensitive);

    gtk_box_pack_start (GTK_BOX (msg_hbox), GTK_WIDGET (msg_frame), FALSE, FALSE, 3);

    gtk_box_pack_start (GTK_BOX (find_hbox), gtk_label_new (_("Find:")), FALSE, FALSE, 3);
    gtk_box_pack_start (GTK_BOX (find_hbox), entry, TRUE, TRUE, 3);
    gtk_box_pack_start (GTK_BOX (matches_hbox), gtk_hbox_new (FALSE, 0), TRUE, TRUE, 0);
    gtk_box_pack_start (GTK_BOX (matches_hbox), gtk_label_new (_("Matches:")), FALSE, FALSE, 3);
    gtk_box_pack_start (GTK_BOX (matches_hbox), count_label, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (matches_hbox), gtk_hbox_new (FALSE, 0), TRUE, TRUE, 0);

    gtk_box_pack_start (GTK_BOX (toggles_hbox), case_check, FALSE, FALSE, 4);

    /*
     * Disabling the forward/backward search button because there are problems with it
     * (related to how gtkhtml handles searches), the GUI freeze is upon us, and I
     * don't know if they'll get resolved for 1.0.  Hopefully getting this fixed can
     * be a 1.1 item.
     */

#if 0
    gtk_box_pack_start (GTK_BOX (toggles_hbox), fwd_check,  FALSE, FALSE, 4);
#endif

    gtk_box_pack_start (GTK_BOX (frame_vbox), find_hbox, TRUE, TRUE, 8);
    gtk_box_pack_start (GTK_BOX (frame_vbox), matches_hbox, TRUE, TRUE, 0); 
    gtk_box_pack_start (GTK_BOX (frame_vbox), toggles_hbox, TRUE, TRUE, 0);
    
    gtk_container_add (GTK_CONTAINER (GTK_FRAME (msg_frame)), GTK_WIDGET (frame_vbox));

    gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (ms)->vbox), msg_hbox, TRUE, TRUE, 0);    
    gtk_box_pack_start (GTK_BOX (GNOME_DIALOG (ms)->vbox), GTK_WIDGET (GTK_FRAME (msg_frame)), TRUE, TRUE, 0);

    gtk_widget_grab_focus (entry); /* Give focus to entry by default */ 
    gnome_dialog_set_default (GNOME_DIALOG (ms), 0); 
    gnome_dialog_editable_enters (GNOME_DIALOG (ms), GTK_EDITABLE(entry)); /* Make <enter> run the search */
    gnome_window_icon_set_from_file (GTK_WINDOW (GNOME_DIALOG (ms)), EVOLUTION_ICONSDIR "/find-message.xpm");

    gtk_widget_show_all (msg_hbox);
    gtk_widget_show_all (find_hbox);
    gtk_widget_show_all (matches_hbox);
    gtk_widget_show_all (toggles_hbox);

    /* Hook up signals */

    gtk_signal_connect (GTK_OBJECT (case_check),
                "toggled",
                GTK_SIGNAL_FUNC (toggled_case_cb),
                ms);
#if 0
    gtk_signal_connect (GTK_OBJECT (fwd_check),
                "toggled",
                GTK_SIGNAL_FUNC (toggled_fwd_cb),
                ms);
#endif
    gtk_signal_connect (GTK_OBJECT (ms),
                "clicked",
                GTK_SIGNAL_FUNC (dialog_clicked_cb),
                ms);

    gtk_signal_connect_object (GTK_OBJECT (ms), 
                   "destroy",
                   GTK_SIGNAL_FUNC (dialog_destroy_cb),
                   GTK_OBJECT (ms));

    gtk_signal_connect_object (GTK_OBJECT (ms->mail),
                   "destroy",
                   GTK_SIGNAL_FUNC (gtk_widget_destroy),
                   GTK_OBJECT (ms));
}

GtkWidget *
mail_search_new (MailDisplay *mail)
{
    gpointer ptr;

    g_return_val_if_fail (mail && IS_MAIL_DISPLAY (mail), NULL);

    ptr = gtk_type_new (mail_search_get_type ());
    mail_search_construct (MAIL_SEARCH (ptr), mail);

    return GTK_WIDGET (ptr);
}