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/*
 * message-list.c: Displays the messages.
 *                 Implements CORBA's Evolution::MessageList
 *
 * Author:
 *     Miguel de Icaza (miguel@helixcode.com)
 *
 * (C) 2000 Helix Code, Inc.
 */
#include <config.h>
#include <gnome.h>
#include <bonobo/bonobo-main.h>
#include "e-util/e-util.h"
#include "camel/camel-exception.h"
#include "camel/camel-folder-summary.h"
#include "message-list.h"
#include "Mail.h"
#include "widgets/e-table/e-table-header-item.h"
#include "widgets/e-table/e-table-item.h"

/*
 * Default sizes for the ETable display
 *
 */
#define N_CHARS(x) (CHAR_WIDTH * (x))

#define COL_ICON_WIDTH        16
#define COL_FROM_WIDTH        N_CHARS(24)
#define COL_FROM_WIDTH_MIN    32
#define COL_SUBJECT_WIDTH     N_CHARS(30)
#define COL_SUBJECT_WIDTH_MIN 32
#define COL_SENT_WIDTH        N_CHARS(20)
#define COL_SENT_WIDTH_MIN    32
#define COL_RECEIVE_WIDTH     N_CHARS(20)
#define COL_RECEIVE_WIDTH_MIN 32
#define COL_TO_WIDTH          N_CHARS(24)
#define COL_TO_WIDTH_MIN      32
#define COL_SIZE_WIDTH        N_CHARS(6)
#define COL_SIZE_WIDTH_MIN    32

#define PARENT_TYPE (bonobo_object_get_type ())

static BonoboObjectClass *message_list_parent_class;
static POA_Evolution_MessageList__vepv evolution_message_list_vepv;

/*
 * SimpleTableModel::col_count
 */
static int
ml_col_count (ETableModel *etm, void *data)
{
    return COL_LAST;
}

/*
 * SimpleTableModel::row_count
 */
static int
ml_row_count (ETableModel *etm, void *data)
{
    MessageList *message_list = data;
    CamelException *ex;
    int v;
    
    if (!message_list->folder)
        return 0;

    ex = camel_exception_new ();
    v = camel_folder_get_message_count (message_list->folder, ex);
    printf ("number of messages in the folder = %d\n", v);
    camel_exception_free (ex);
    
    return v;
}

static void *
ml_value_at (ETableModel *etm, int col, int row, void *data)
{
    static char buffer [10];
    MessageList *message_list = data;
    CamelFolderSummary *summary;
    const GArray *array;
    CamelMessageInfo *info;
    CamelException *ex;
    CamelMimeMessage *message;
    
    ex = camel_exception_new ();
    summary = camel_folder_get_summary(message_list->folder, ex);
    array = camel_folder_summary_get_message_info_list(summary);
    info = &g_array_index(array, CamelMessageInfo, row);
    /*message = camel_folder_get_message_by_uid(message_list->folder, info->uid, ex);*/
    camel_exception_free (ex);
    switch (col){
    case COL_ONLINE_STATUS:
        return GINT_TO_POINTER (0);
        
    case COL_MESSAGE_STATUS:
        return GINT_TO_POINTER (1);
        
    case COL_PRIORITY:
        return GINT_TO_POINTER (1);
        
    case COL_ATTACHMENT:
        return GINT_TO_POINTER (0);
        
    case COL_FROM:
      if ( info->sender )
        return info->sender;
      else
        return "";
        
    case COL_SUBJECT:
      if ( info->subject )
        return info->subject;
      else
        return "";
        
    case COL_SENT:
        return "sent";
        
    case COL_RECEIVE:
        return "receive";
            
    case COL_TO:
        return "dudes@server";
        
    case COL_SIZE:
        sprintf (buffer, "%d", 20);
        return buffer;
            
    default:
        g_assert_not_reached ();
    }
    return NULL;
}

static void
ml_set_value_at (ETableModel *etm, int col, int row, const void *value, void *data)
{
}

static gboolean
ml_is_cell_editable (ETableModel *etm, int col, int row, void *data)
{
    return FALSE;
}

static void *
ml_duplicate_value (ETableModel *etm, int col, const void *value, void *data)
{
    switch (col){
    case COL_ONLINE_STATUS:
    case COL_MESSAGE_STATUS:
    case COL_PRIORITY:
    case COL_ATTACHMENT:
      return value;

    case COL_FROM:
    case COL_SUBJECT:
    case COL_SENT:
    case COL_RECEIVE:
    case COL_TO:
    case COL_SIZE:
      return g_strdup(value);
    default:
        g_assert_not_reached ();
    }
    return NULL;
}

static void
ml_free_value (ETableModel *etm, int col, void *value, void *data)
{
    switch (col){
    case COL_ONLINE_STATUS:
    case COL_MESSAGE_STATUS:
    case COL_PRIORITY:
    case COL_ATTACHMENT:
      break;

    case COL_FROM:
    case COL_SUBJECT:
    case COL_SENT:
    case COL_RECEIVE:
    case COL_TO:
    case COL_SIZE:
      g_free(value);
      break;
    default:
        g_assert_not_reached ();
    }
}

static void
ml_thaw (ETableModel *etm, void *data)
{
    e_table_model_changed(etm);
}

static void
message_list_init_renderers (MessageList *message_list)
{
    g_assert (message_list);
    g_assert (message_list->table_model);
    
    message_list->render_text = e_cell_text_new (
        message_list->table_model,
        NULL, GTK_JUSTIFY_LEFT, FALSE);

    message_list->render_online_status = e_cell_checkbox_new ();
    message_list->render_message_status = e_cell_checkbox_new ();
    message_list->render_attachment = e_cell_checkbox_new ();

    /*
     * FIXME: We need a real renderer here
     */
    message_list->render_priority = e_cell_checkbox_new ();
}

#define CHAR_WIDTH 10
static void
message_list_init_header (MessageList *message_list)
{
    int i;
    
    /*
     * FIXME:
     *
     * Use the font metric to compute this.
     */
    
    message_list->header_model = e_table_header_new ();

    message_list->table_cols [COL_ONLINE_STATUS] =
        e_table_col_new (COL_ONLINE_STATUS, _("Online status"),
                 COL_ICON_WIDTH, COL_ICON_WIDTH,
                 message_list->render_online_status,
                 g_int_compare, FALSE);

    message_list->table_cols [COL_MESSAGE_STATUS] =
        e_table_col_new (COL_MESSAGE_STATUS, _("Message status"),
                 COL_ICON_WIDTH, COL_ICON_WIDTH,
                 message_list->render_message_status,
                 g_int_compare, FALSE);

    message_list->table_cols [COL_PRIORITY] =
        e_table_col_new (COL_PRIORITY, _("Priority"),
                 COL_ICON_WIDTH, COL_ICON_WIDTH,
                 message_list->render_priority,
                 g_int_compare, FALSE);
    
    message_list->table_cols [COL_ATTACHMENT] =
        e_table_col_new (COL_ATTACHMENT, _("Attachment"),
                 COL_ICON_WIDTH, COL_ICON_WIDTH,
                 message_list->render_attachment,
                 g_int_compare, FALSE);

    message_list->table_cols [COL_FROM] =
        e_table_col_new (COL_FROM, _("From"),
                 COL_FROM_WIDTH, COL_FROM_WIDTH_MIN,
                 message_list->render_text,
                 g_str_compare, TRUE);

    message_list->table_cols [COL_SUBJECT] =
        e_table_col_new (COL_SUBJECT, _("Subject"),
                 COL_SUBJECT_WIDTH, COL_SUBJECT_WIDTH_MIN,
                 message_list->render_text,
                 g_str_compare, TRUE);

    message_list->table_cols [COL_SENT] =
        e_table_col_new (COL_SENT, _("Sent"),
                 COL_SENT_WIDTH, COL_SENT_WIDTH_MIN,
                 message_list->render_text,
                 g_str_compare, TRUE);

    message_list->table_cols [COL_RECEIVE] =
        e_table_col_new (COL_RECEIVE, _("Receive"),
                 COL_RECEIVE_WIDTH, COL_RECEIVE_WIDTH_MIN,
                 message_list->render_text,
                 g_str_compare, TRUE);
    message_list->table_cols [COL_TO] =
        e_table_col_new (COL_TO, _("To"),
                 COL_TO_WIDTH, COL_TO_WIDTH_MIN,
                 message_list->render_text,
                 g_str_compare, TRUE);

    message_list->table_cols [COL_SIZE] =
        e_table_col_new (COL_SIZE, _("Size"),
                 COL_SIZE_WIDTH, COL_SIZE_WIDTH_MIN,
                 message_list->render_text,
                 g_str_compare, TRUE);

    /*
     * Dummy init: It setups the headers to match the order in which
     * they are defined.  In the future e-table widget will take care
     * of this.
     */
    for (i = 0; i < COL_LAST; i++) {
        gtk_object_ref(GTK_OBJECT(message_list->table_cols [i]));
        e_table_header_add_column (message_list->header_model,
                       message_list->table_cols [i], i);
    }
}

static void
set_header_size (GnomeCanvas *canvas, GtkAllocation *alloc)
{
    printf ("Here\n");
    gnome_canvas_set_scroll_region (canvas, 0, 0, alloc->width, alloc->height);
}

static void
set_content_size (GnomeCanvas *canvas, GtkAllocation *alloc)
{
    printf ("Here2\n");
        gnome_canvas_set_scroll_region (canvas, 0, 0, alloc->width, alloc->height);
}

#if 0
static GtkWidget *
make_etable (MessageList *message_list)
{
    GtkTable *t;
    GtkWidget *header, *content;
    
    t = (GtkTable *) gtk_table_new (0, 0, 0);
    gtk_widget_show (GTK_WIDGET (t));

    gtk_widget_push_visual (gdk_rgb_get_visual ());
    gtk_widget_push_colormap (gdk_rgb_get_cmap ());

    header = gnome_canvas_new ();
    gtk_signal_connect (GTK_OBJECT (header), "size_allocate",
                            GTK_SIGNAL_FUNC (set_header_size), NULL);
    gtk_widget_set_usize (header, 300, 20);
    gtk_widget_show (header);
    content = gnome_canvas_new ();
    gtk_widget_set_usize (content, 300, 20);
        gtk_signal_connect (GTK_OBJECT (content), "size_allocate",
                            GTK_SIGNAL_FUNC (set_content_size), NULL);
    gtk_widget_show (content);

    gtk_widget_pop_colormap ();
    gtk_widget_pop_visual ();
    
    gnome_canvas_item_new (
        gnome_canvas_root (GNOME_CANVAS (header)),
        e_table_header_item_get_type (),
        "ETableHeader", message_list->header_model,
        NULL);

    gnome_canvas_item_new (
        gnome_canvas_root (GNOME_CANVAS (content)),
        e_table_item_get_type (),
        "ETableHeader", message_list->header_model,
        "ETableModel", message_list->table_model,
        "drawgrid", TRUE,
        "drawfocus", TRUE,
        "spreadsheet", TRUE,
        NULL);

    gtk_table_attach (t, header,
              0, 1, 0, 1, GTK_FILL | GTK_EXPAND, GTK_FILL | GTK_EXPAND, 0, 0);

    gtk_table_attach (t, content,
              0, 1, 1, 2,
              GTK_FILL | GTK_EXPAND, GTK_FILL | GTK_EXPAND, 0, 0);


    return t;
}
#endif

/*
 * GtkObject::init
 */
static void
message_list_init (GtkObject *object)
{
    MessageList *message_list = MESSAGE_LIST (object);

    message_list->table_model = e_table_simple_new (
        ml_col_count, ml_row_count, ml_value_at,
        ml_set_value_at, ml_is_cell_editable, ml_duplicate_value, ml_free_value,
        ml_thaw, message_list);

    message_list_init_renderers (message_list);
    message_list_init_header (message_list);
    printf ("headers intialized\n");

    /*
     * The etable
     */
    
    message_list->etable = e_table_new (message_list->header_model, message_list->table_model, "<ETableSpecification> <columns-shown> <column> 0 </column> <column> 1 </column> <column> 2 </column> <column> 3 </column> <column> 4 </column> <column> 5 </column> <column> 6 </column> <column> 7 </column> <column> 8 </column> <column> 9 </column> </columns-shown> <grouping> <group column=\"4\" ascending=\"1\"> <leaf column=\"0\" ascending=\"1\"/> </group> </grouping> </ETableSpecification>");

    gtk_widget_show(message_list->etable);
    
    /*
     * We do own the Etable, not some widget container
     */
    gtk_object_ref (GTK_OBJECT (message_list->etable));
    gtk_object_sink (GTK_OBJECT (message_list->etable));
}

static void
message_list_destroy (GtkObject *object)
{
    MessageList *message_list = MESSAGE_LIST (object);
    int i;

    gtk_object_unref (GTK_OBJECT (message_list->table_model));
    gtk_object_unref (GTK_OBJECT (message_list->header_model));

    /*
     * Renderers
     */
    gtk_object_unref (GTK_OBJECT (message_list->render_text));
    gtk_object_unref (GTK_OBJECT (message_list->render_online_status));
    gtk_object_unref (GTK_OBJECT (message_list->render_message_status));
    gtk_object_unref (GTK_OBJECT (message_list->render_priority));
    gtk_object_unref (GTK_OBJECT (message_list->render_attachment));
    
    gtk_object_unref (GTK_OBJECT (message_list->etable));

    for (i = 0; i < COL_LAST; i++)
        gtk_object_unref (GTK_OBJECT (message_list->table_cols [i]));

    GTK_OBJECT_CLASS (message_list_parent_class)->destroy (object);
}

/*
 * CORBA method: Evolution::MessageList::select_message
 */
static void
MessageList_select_message (PortableServer_Servant _servant,
                const CORBA_long message_number,
                CORBA_Environment *ev)
{
    printf ("FIXME: select message method\n");
}

/*
 * CORBA method: Evolution::MessageList::open_message
 */
static void
MessageList_open_message (PortableServer_Servant _servant,
              const CORBA_long message_number,
              CORBA_Environment *ev)
{
    printf ("FIXME: open message method\n");
}

static POA_Evolution_MessageList__epv *
evolution_message_list_get_epv (void)
{
    POA_Evolution_MessageList__epv *epv;

    epv = g_new0 (POA_Evolution_MessageList__epv, 1);

    epv->select_message = MessageList_select_message;
    epv->open_message   = MessageList_open_message;

    return epv;
}

static void
message_list_corba_class_init (void)
{
    evolution_message_list_vepv.Bonobo_Unknown_epv = bonobo_object_get_epv ();
    evolution_message_list_vepv.Evolution_MessageList_epv = evolution_message_list_get_epv ();
}

/*
 * GtkObjectClass::init
 */
static void
message_list_class_init (GtkObjectClass *object_class)
{
    message_list_parent_class = gtk_type_class (PARENT_TYPE);

    object_class->destroy = message_list_destroy;

    message_list_corba_class_init ();
}

static void
message_list_construct (MessageList *message_list, Evolution_MessageList corba_message_list)
{
    bonobo_object_construct (BONOBO_OBJECT (message_list), corba_message_list);
}

static Evolution_MessageList
create_corba_message_list (BonoboObject *object)
{
    POA_Evolution_MessageList *servant;
    CORBA_Environment ev;

    servant = (POA_Evolution_MessageList *) g_new0 (BonoboObjectServant, 1);
    servant->vepv = &evolution_message_list_vepv;

    CORBA_exception_init (&ev);
    POA_Evolution_MessageList__init ((PortableServer_Servant) servant, &ev);
    if (ev._major != CORBA_NO_EXCEPTION){
        g_free (servant);
        CORBA_exception_free (&ev);
        return CORBA_OBJECT_NIL;
    }

    CORBA_exception_free (&ev);
    return (Evolution_MessageList) bonobo_object_activate_servant (object, servant);
}

BonoboObject *
message_list_new (void)
{
    Evolution_MessageList corba_object;
    MessageList *message_list;

    message_list = gtk_type_new (message_list_get_type ());

    corba_object = create_corba_message_list (BONOBO_OBJECT (message_list));
    if (corba_object == CORBA_OBJECT_NIL){
        gtk_object_destroy (GTK_OBJECT (message_list));
        return NULL;
    }

    message_list_construct (message_list, corba_object);

    return BONOBO_OBJECT (message_list);
}

void
message_list_set_folder (MessageList *message_list, CamelFolder *camel_folder)
{
    CamelException ex;
    gboolean folder_exists;

    g_return_if_fail (message_list != NULL);
    g_return_if_fail (camel_folder != NULL);
    g_return_if_fail (IS_MESSAGE_LIST (message_list));
    g_return_if_fail (CAMEL_IS_FOLDER (camel_folder));
    g_return_if_fail (camel_folder_has_summary_capability (camel_folder));
    
    
    camel_exception_init (&ex);
    
    if (message_list->folder)
        gtk_object_unref (GTK_OBJECT (message_list->folder));

    message_list->folder = camel_folder;
    
    folder_exists = camel_folder_exists (camel_folder, NULL);
    
    if (camel_exception_get_id (&ex)) {
          printf ("Unable to test for folder existence: %s\n",
              ex.desc?ex.desc:"unknown reason");
          return;
    }
    
    if (!folder_exists) {     
        g_warning ("Folder does not exist, creating it\n");
        /* 
           if you don't want the directory to be created
           automatically here remove this.
        */
        camel_folder_create (camel_folder, &ex);
        if (camel_exception_get_id (&ex)) {
          printf ("Unable to create folder: %s\n",
              ex.desc?ex.desc:"unknown_reason");
          return;
        }
       
    }

    
    camel_folder_open (camel_folder, FOLDER_OPEN_RW, &ex);
    if (camel_exception_get_id (&ex)) {
        printf ("Unable to open folder: %s\n",
            ex.desc?ex.desc:"unknown_reason");    
        return;
    }
    
    message_list->folder_summary =
        camel_folder_get_summary (camel_folder, &ex);
    
    if (camel_exception_get_id (&ex)) {
        printf ("Unable to get summary: %s\n",
            ex.desc?ex.desc:"unknown_reason");        
        return;
    }
    
    
    gtk_object_ref (GTK_OBJECT (camel_folder));

    printf ("Modelo cambio!\n");
    e_table_model_changed (message_list->table_model);
}

GtkWidget *
message_list_get_widget (MessageList *message_list)
{
    return message_list->etable;
}

E_MAKE_TYPE (message_list, "MessageList", MessageList, message_list_class_init, message_list_init, PARENT_TYPE);