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nautilus-search-bar.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/*
 * Copyright (C) 2005 Novell, Inc.
 *
 * Nautilus 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.
 *
 * Nautilus 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; see the file COPYING.  If not,
 * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * Author: Anders Carlsson <andersca@imendio.com>
 *
 */

#include <config.h>
#include "nautilus-search-bar.h"

#include <glib/gi18n.h>
#include <eel/eel-gtk-macros.h>
#include <gdk/gdkkeysyms.h>
#include <gtk/gtk.h>

struct NautilusSearchBarDetails {
      GtkWidget *entry;
      gboolean entry_borrowed;
};

enum {
       ACTIVATE,
       CANCEL,
       LAST_SIGNAL
}; 

static guint signals[LAST_SIGNAL];

static void  nautilus_search_bar_class_init       (NautilusSearchBarClass *class);
static void  nautilus_search_bar_init             (NautilusSearchBar      *bar);

EEL_CLASS_BOILERPLATE (NautilusSearchBar,
                   nautilus_search_bar,
                   GTK_TYPE_EVENT_BOX)

      
static void
finalize (GObject *object)
{
      NautilusSearchBar *bar;

      bar = NAUTILUS_SEARCH_BAR (object);

      g_free (bar->details);

      EEL_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
}

static void
nautilus_search_bar_class_init (NautilusSearchBarClass *class)
{
      GObjectClass *gobject_class;
      GtkBindingSet *binding_set;

      gobject_class = G_OBJECT_CLASS (class);
      gobject_class->finalize = finalize;

      signals[ACTIVATE] =
            g_signal_new ("activate",
                        G_TYPE_FROM_CLASS (class),
                        G_SIGNAL_RUN_LAST,
                        G_STRUCT_OFFSET (NautilusSearchBarClass, activate),
                        NULL, NULL,
                        g_cclosure_marshal_VOID__VOID,
                        G_TYPE_NONE, 0);
      
      signals[CANCEL] =
            g_signal_new ("cancel",
                        G_TYPE_FROM_CLASS (class),
                        G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
                        G_STRUCT_OFFSET (NautilusSearchBarClass, cancel),
                        NULL, NULL,
                        g_cclosure_marshal_VOID__VOID,
                        G_TYPE_NONE, 0);

      binding_set = gtk_binding_set_by_class (class);
      gtk_binding_entry_add_signal (binding_set, GDK_Escape, 0, "cancel", 0);
}

static gboolean
entry_has_text (NautilusSearchBar *bar)
{
       const char *text;

       text = gtk_entry_get_text (GTK_ENTRY (bar->details->entry));

       return text != NULL && text[0] != '\0';
}

static void
entry_activate_cb (GtkWidget *entry, NautilusSearchBar *bar)
{
       if (entry_has_text (bar) && !bar->details->entry_borrowed) {
               g_signal_emit (bar, signals[ACTIVATE], 0);
       }
}


static void
nautilus_search_bar_init (NautilusSearchBar *bar)
{
      GtkWidget *alignment;
      GtkWidget *hbox;
      GtkWidget *label;

      bar->details = g_new0 (NautilusSearchBarDetails, 1);

      gtk_event_box_set_visible_window (GTK_EVENT_BOX (bar), FALSE);

      alignment = gtk_alignment_new (0.5, 0.5,
                               1.0, 1.0);
      gtk_alignment_set_padding (GTK_ALIGNMENT (alignment),
                           0, 0, 6, 6);
      gtk_widget_show (alignment);
      gtk_container_add (GTK_CONTAINER (bar), alignment);

      hbox = gtk_hbox_new (FALSE, 6);
      gtk_widget_show (hbox);
      gtk_container_add (GTK_CONTAINER (alignment), hbox);

      label = gtk_label_new (_("Search:"));
      gtk_widget_show (label);

      gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);

      bar->details->entry = gtk_entry_new ();
      gtk_box_pack_start (GTK_BOX (hbox), bar->details->entry, TRUE, TRUE, 0);

      g_signal_connect (bar->details->entry, "activate",
                    G_CALLBACK (entry_activate_cb), bar);

      gtk_widget_show (bar->details->entry);
}

GtkWidget *
nautilus_search_bar_borrow_entry (NautilusSearchBar *bar)
{
      GtkBindingSet *binding_set;
      
      bar->details->entry_borrowed = TRUE;

      binding_set = gtk_binding_set_by_class (G_OBJECT_GET_CLASS (bar));
      gtk_binding_entry_clear (binding_set, GDK_Escape, 0);
      return bar->details->entry;
}

void
nautilus_search_bar_return_entry (NautilusSearchBar *bar)
{
      GtkBindingSet *binding_set;
      
      bar->details->entry_borrowed = FALSE;
      
      binding_set = gtk_binding_set_by_class (G_OBJECT_GET_CLASS (bar));
      gtk_binding_entry_add_signal (binding_set, GDK_Escape, 0, "cancel", 0);
}

GtkWidget *
nautilus_search_bar_new (void)
{
      GtkWidget *bar;

      bar = g_object_new (NAUTILUS_TYPE_SEARCH_BAR, NULL);

      return bar;
}

NautilusQuery *
nautilus_search_bar_get_query (NautilusSearchBar *bar)
{
      const char *query_text;
      NautilusQuery *query;

      query_text = gtk_entry_get_text (GTK_ENTRY (bar->details->entry));

      /* Empty string is a NULL query */
      if (query_text && query_text[0] == '\0') {
            return NULL;
      }
      
      query = nautilus_query_new ();
      nautilus_query_set_text (query, query_text);

      return query;
}

void
nautilus_search_bar_grab_focus (NautilusSearchBar *bar)
{
      gtk_widget_grab_focus (bar->details->entry);
}

void
nautilus_search_bar_clear (NautilusSearchBar *bar)
{
      gtk_entry_set_text (GTK_ENTRY (bar->details->entry), "");
}

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