source: trunk/third/gtkhtml3/src/htmltextinput.c @ 19539

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*  This file is part of the GtkHTML library.

    Copyright (C) 2000 Jonas Borgström <jonas_b@bitsmart.com>.

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library 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
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  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 <gdk/gdkkeysyms.h>
#include <gtk/gtksignal.h>
#include <gtk/gtkentry.h>

#include "htmltextinput.h"
#include "htmlform.h"


HTMLTextInputClass html_text_input_class;
static HTMLEmbeddedClass *parent_class = NULL;


/* HTMLObject methods.  */

static void
destroy (HTMLObject *o)
{
        HTMLTextInput *ti;

        ti = HTML_TEXTINPUT (o);

        if (ti->default_text)
                g_free (ti->default_text);

        HTML_OBJECT_CLASS (parent_class)->destroy (o);
}

static void
copy (HTMLObject *self,
      HTMLObject *dest)
{
        (* HTML_OBJECT_CLASS (parent_class)->copy) (self, dest);

        HTML_TEXTINPUT (dest)->size = HTML_TEXTINPUT (self)->size;
        HTML_TEXTINPUT (dest)->maxlen = HTML_TEXTINPUT (self)->maxlen;
        HTML_TEXTINPUT (dest)->password = HTML_TEXTINPUT (self)->password;
        HTML_TEXTINPUT (dest)->default_text = g_strdup (HTML_TEXTINPUT (self)->default_text);

        /* g_warning ("HTMLTextInput::copy is not complete"); */
}

static void
reset (HTMLEmbedded *e)
{
        gtk_entry_set_text (GTK_ENTRY (e->widget), HTML_TEXTINPUT (e)->default_text);
}

static gboolean
html_text_input_key_pressed (GtkWidget *w, GdkEventKey *ev, gpointer p) 
{
        HTMLEmbedded *e = HTML_EMBEDDED(p);
        HTMLEmbedded *next = NULL;
        HTMLEmbedded *current = NULL;
        gboolean found = FALSE;
        GList *node = NULL;
        
        if (ev->keyval == GDK_Return) {
                for (node = e->form->elements; node; node = node->next) {
                        current = HTML_EMBEDDED(node->data);
                        
                        /* focus on the next visible element */
                        if (current->widget && found
                            && HTML_OBJECT_TYPE(current) != HTML_TYPE_BUTTON
                            && HTML_OBJECT_TYPE(current) != HTML_TYPE_IMAGEINPUT) {
                                next = current;
                                break;
                        }
                        
                        if (node->data == e)
                                found = TRUE;
                }
                
                if (next)
                        gtk_widget_grab_focus (next->widget);
                else if (found)
                        html_form_submit (e->form);
                else
                        g_warning ("Not in form's element list.  Couldn't focus successor.");
                
                g_signal_stop_emission_by_name (w, "key_press_event");
                return TRUE;
        }
        return FALSE;
}

/* HTMLEmbedded methods.  */

static gchar *
encode (HTMLEmbedded *e)
{
        GString *encoding = g_string_new ("");
        gchar *ptr;

        if(strlen (e->name)) {
                ptr = html_embedded_encode_string (e->name);
                encoding = g_string_append (encoding, ptr);
                g_free (ptr);

                encoding = g_string_append_c (encoding, '=');

                ptr = html_embedded_encode_string (gtk_entry_get_text (GTK_ENTRY (e->widget)));
                encoding = g_string_append (encoding, ptr);
                g_free (ptr);
        }

        ptr = encoding->str;
        g_string_free(encoding, FALSE);

        return ptr;
}


void
html_text_input_type_init (void)
{
        html_text_input_class_init (&html_text_input_class,
                                    HTML_TYPE_TEXTINPUT,
                                    sizeof (HTMLTextInput));
}

void
html_text_input_class_init (HTMLTextInputClass *klass,
                            HTMLType type,
                            guint object_size)
{
        HTMLEmbeddedClass *element_class;
        HTMLObjectClass *object_class;

        element_class = HTML_EMBEDDED_CLASS (klass);
        object_class = HTML_OBJECT_CLASS (klass);

        html_embedded_class_init (element_class, type, object_size);

        /* HTMLObject methods.   */
        object_class->destroy = destroy;
        object_class->copy = copy;

        /* HTMLEmbedded methods.   */
        element_class->reset = reset;
        element_class->encode = encode;

        parent_class = &html_embedded_class;
}

void
html_text_input_init (HTMLTextInput *ti,
                      HTMLTextInputClass *klass,
                      GtkWidget *parent,
                      gchar *name,
                      gchar *value,
                      gint size,
                      gint maxlen,
                      gboolean password)
{
        HTMLEmbedded *element;
        HTMLObject *object;
        GtkWidget *entry;

        element = HTML_EMBEDDED (ti);
        object = HTML_OBJECT (ti);

        html_embedded_init (element, HTML_EMBEDDED_CLASS (klass),
                           parent, name, value);

        entry = gtk_entry_new ();
        html_embedded_set_widget (element, entry);
        g_signal_connect_after (entry, "key_press_event", G_CALLBACK (html_text_input_key_pressed), element);

        if (strlen (element->value))    
                gtk_entry_set_text (GTK_ENTRY (element->widget), element->value);

        ti->default_text = g_strdup (element->value);

        if (maxlen != -1)
                gtk_entry_set_max_length(GTK_ENTRY(element->widget), maxlen);

        gtk_entry_set_visibility (GTK_ENTRY(element->widget), !password);
        
        gtk_entry_set_width_chars (GTK_ENTRY(element->widget), size);
        
        ti->size = size;
        ti->maxlen = maxlen;
}

HTMLObject *
html_text_input_new (GtkWidget *parent,
                     gchar *name,
                     gchar *value,
                     gint size,
                     gint maxlen,
                     gboolean password)
{
        HTMLTextInput *ti;

        ti = g_new0 (HTMLTextInput, 1);
        html_text_input_init (ti, &html_text_input_class,
                              parent, name, value, size,
                              maxlen, password);

        return HTML_OBJECT (ti);
}